2
0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-16 09:13:55 +08:00
Commit Graph

6349 Commits

Author SHA1 Message Date
Andrey Konovalov
51dcc81c28 kasan: adjust kasan_stack_oob for tag-based mode
Use OOB_TAG_OFF as access offset to land the access into the next granule.

Suggested-by: Walter Wu <walter-zh.wu@mediatek.com>
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Elena Petrova <lenaptr@google.com>
Cc: Marco Elver <elver@google.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Ard Biesheuvel <ardb@kernel.org>
Link: http://lkml.kernel.org/r/403b259f1de49a7a3694531c851ac28326a586a8.1596199677.git.andreyknvl@google.com
Link: http://lkml.kernel.org/r/3063ab1411e92bce36061a96e25b651212e70ba6.1596544734.git.andreyknvl@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-07 11:33:28 -07:00
Walter Wu
f33a01492a lib/test_kasan.c: fix KASAN unit tests for tag-based KASAN
We use tag-based KASAN, then KASAN unit tests don't detect out-of-bounds
memory access. They need to be fixed.

With tag-based KASAN, the state of each 16 aligned bytes of memory is
encoded in one shadow byte and the shadow value is tag of pointer, so
we need to read next shadow byte, the shadow value is not equal to tag
value of pointer, so that tag-based KASAN will detect out-of-bounds
memory access.

[walter-zh.wu@mediatek.com: use KASAN_SHADOW_SCALE_SIZE instead of 13]
  Link: http://lkml.kernel.org/r/20200708132524.11688-1-walter-zh.wu@mediatek.com

Suggested-by: Dmitry Vyukov <dvyukov@google.com>
Signed-off-by: Walter Wu <walter-zh.wu@mediatek.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andrey Konovalov <andreyknvl@google.com>
Acked-by: Dmitry Vyukov <dvyukov@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Link: http://lkml.kernel.org/r/20200706115039.16750-1-walter-zh.wu@mediatek.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-07 11:33:28 -07:00
Walter Wu
387d6e4668 kasan: add tests for call_rcu stack recording
Test call_rcu() call stack recording and verify whether it correctly is
printed in KASAN report.

Signed-off-by: Walter Wu <walter-zh.wu@mediatek.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: Dmitry Vyukov <dvyukov@google.com>
Reviewed-by: Dmitry Vyukov <dvyukov@google.com>
Reviewed-by: Andrey Konovalov <andreyknvl@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: Joel Fernandes <joel@joelfernandes.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Josh Triplett <josh@joshtriplett.org>
Cc: Lai Jiangshan <jiangshanlai@gmail.com>
Cc: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Cc: "Paul E . McKenney" <paulmck@kernel.org>
Link: http://lkml.kernel.org/r/20200601051045.1294-1-walter-zh.wu@mediatek.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-07 11:33:28 -07:00
Marco Elver
ac4766be5e kasan: update required compiler versions in documentation
Updates the recently changed compiler requirements for KASAN.  In
particular, we require GCC >= 8.3.0, and add a note that Clang 11 supports
OOB detection of globals.

Fixes: 7b861a53e4 ("kasan: Bump required compiler version")
Fixes: acf7b0bf7d ("kasan: Fix required compiler version")
Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andrey Konovalov <andreyknvl@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Walter Wu <walter-zh.wu@mediatek.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Daniel Axtens <dja@axtens.net>
Link: http://lkml.kernel.org/r/20200629104157.3242503-2-elver@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-07 11:33:28 -07:00
Marco Elver
7a3767f83f kasan: improve and simplify Kconfig.kasan
Turn 'KASAN' into a menuconfig, to avoid cluttering its parent menu with
the suboptions if enabled.  Use 'if KASAN ...  endif' instead of having to
'depend on KASAN' for each entry.

Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andrey Konovalov <andreyknvl@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Daniel Axtens <dja@axtens.net>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Walter Wu <walter-zh.wu@mediatek.com>
Link: http://lkml.kernel.org/r/20200629104157.3242503-1-elver@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-07 11:33:28 -07:00
Feng Tang
0a4954a850 percpu_counter: add percpu_counter_sync()
percpu_counter's accuracy is related to its batch size.  For a
percpu_counter with a big batch, its deviation could be big, so when the
counter's batch is runtime changed to a smaller value for better accuracy,
there could also be requirment to reduce the big deviation.

So add a percpu-counter sync function to be run on each CPU.

Reported-by: kernel test robot <rong.a.chen@intel.com>
Signed-off-by: Feng Tang <feng.tang@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Dennis Zhou <dennis@kernel.org>
Cc: Tejun Heo <tj@kernel.org>
Cc: Christoph Lameter <cl@linux.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Qian Cai <cai@lca.pw>
Cc: Andi Kleen <andi.kleen@intel.com>
Cc: Huang Ying <ying.huang@intel.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Haiyang Zhang <haiyangz@microsoft.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: "K. Y. Srinivasan" <kys@microsoft.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Tim Chen <tim.c.chen@intel.com>
Link: http://lkml.kernel.org/r/1594389708-60781-4-git-send-email-feng.tang@intel.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-07 11:33:26 -07:00
Mike Rapoport
ab05eabfa1 mm: move lib/ioremap.c to mm/
The functionality in lib/ioremap.c deals with pagetables, vmalloc and
caches, so it naturally belongs to mm/ Moving it there will also allow
declaring p?d_alloc_track functions in an header file inside mm/ rather
than having those declarations in include/linux/mm.h

Suggested-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Pekka Enberg <penberg@kernel.org>
Cc: Abdul Haleem <abdhalee@linux.vnet.ibm.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Joerg Roedel <jroedel@suse.de>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Matthew Wilcox <willy@infradead.org>
Link: http://lkml.kernel.org/r/20200627143453.31835-8-rppt@kernel.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-07 11:33:26 -07:00
Waiman Long
453431a549 mm, treewide: rename kzfree() to kfree_sensitive()
As said by Linus:

  A symmetric naming is only helpful if it implies symmetries in use.
  Otherwise it's actively misleading.

  In "kzalloc()", the z is meaningful and an important part of what the
  caller wants.

  In "kzfree()", the z is actively detrimental, because maybe in the
  future we really _might_ want to use that "memfill(0xdeadbeef)" or
  something. The "zero" part of the interface isn't even _relevant_.

The main reason that kzfree() exists is to clear sensitive information
that should not be leaked to other future users of the same memory
objects.

Rename kzfree() to kfree_sensitive() to follow the example of the recently
added kvfree_sensitive() and make the intention of the API more explicit.
In addition, memzero_explicit() is used to clear the memory to make sure
that it won't get optimized away by the compiler.

The renaming is done by using the command sequence:

  git grep -w --name-only kzfree |\
  xargs sed -i 's/kzfree/kfree_sensitive/'

followed by some editing of the kfree_sensitive() kerneldoc and adding
a kzfree backward compatibility macro in slab.h.

[akpm@linux-foundation.org: fs/crypto/inline_crypt.c needs linux/slab.h]
[akpm@linux-foundation.org: fix fs/crypto/inline_crypt.c some more]

Suggested-by: Joe Perches <joe@perches.com>
Signed-off-by: Waiman Long <longman@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: David Howells <dhowells@redhat.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Jarkko Sakkinen <jarkko.sakkinen@linux.intel.com>
Cc: James Morris <jmorris@namei.org>
Cc: "Serge E. Hallyn" <serge@hallyn.com>
Cc: Joe Perches <joe@perches.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: "Jason A . Donenfeld" <Jason@zx2c4.com>
Link: http://lkml.kernel.org/r/20200616154311.12314-3-longman@redhat.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-08-07 11:33:22 -07:00
Linus Torvalds
1e21b5c739 Livepatching changes for 5.9
-----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEESH4wyp42V4tXvYsjUqAMR0iAlPIFAl8ruxsACgkQUqAMR0iA
 lPJyeQ/+IjRLKqM8QFv/vZDjhIHFOMR64wfNso3Jh6BhMCL38Ow1LISUqNSoBLQP
 eHJF42KlZG4EWwUdXM1ZnRvp/BXl9urkcQUG1Q26tlNsa58UMbntXIIjzk9YucOw
 Q6HBzURZ09KLvVHxddOG1V4wEHWpIGrS3siwBQTrvhhkgLfSteX632TAGC+Gizwj
 dIleRfFiB1xYhMZg7Ej8b+yImlHj1FO+L3IHq/JgBSjDP5hKkAX16phmmflo8WKZ
 ozSU6AqJVdBAYdR1I6xhkFUGwcYjcjPb1MrAeFMDv0YrgbWZNv30k6EpIW/Az5QI
 tlw9gZ4EgdnYZ0iG5h8B1MfnRvsr7fYthnLj7wDTuBs1wMkm8kH+YOKGHS+ihjLO
 Gg8cC5V4iN07gA/KjKngdoYUOD1IjvWTLj6mB70qWVnYRIz5UveaER3J+kWNC5gU
 Jpw9TlcW05Fa9XQf6ChLG9cBj0QyWMSlhl6vQp45b0Z0wgQcpddIZC6TRRlwmgak
 DpESQWF3P4FUAFjR/lGizpCsTB1VTp0ghmQ7geT0y1LbF0WDXV1WvaKGR5RmClv4
 KVTs9DBCji0zBc5GfdV/0s8A0Ub9g3wdNy1WYRZAm7LIXn/zwNI8I5vH/U140Bd1
 qkL4FYxA8lh8+Wy6qk2rM8/5KX5EsxysN8lyebrY7xNR5+ObSYQ=
 =oQEB
 -----END PGP SIGNATURE-----

Merge tag 'livepatching-for-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching

Pull livepatching updates from Petr Mladek:
 "Improvements and cleanups of livepatching selftests"

* tag 'livepatching-for-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching:
  selftests/livepatch: adopt to newer sysctl error format
  selftests/livepatch: Use "comm" instead of "diff" for dmesg
  selftests/livepatch: add test delimiter to dmesg
  selftests/livepatch: refine dmesg 'taints' in dmesg comparison
  selftests/livepatch: Don't clear dmesg when running tests
  selftests/livepatch: fix mem leaks in test-klp-shadow-vars
  selftests/livepatch: more verification in test-klp-shadow-vars
  selftests/livepatch: rework test-klp-shadow-vars
  selftests/livepatch: simplify test-klp-callbacks busy target tests
2020-08-06 11:33:20 -07:00
Linus Torvalds
47ec5303d7 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next
Pull networking updates from David Miller:

 1) Support 6Ghz band in ath11k driver, from Rajkumar Manoharan.

 2) Support UDP segmentation in code TSO code, from Eric Dumazet.

 3) Allow flashing different flash images in cxgb4 driver, from Vishal
    Kulkarni.

 4) Add drop frames counter and flow status to tc flower offloading,
    from Po Liu.

 5) Support n-tuple filters in cxgb4, from Vishal Kulkarni.

 6) Various new indirect call avoidance, from Eric Dumazet and Brian
    Vazquez.

 7) Fix BPF verifier failures on 32-bit pointer arithmetic, from
    Yonghong Song.

 8) Support querying and setting hardware address of a port function via
    devlink, use this in mlx5, from Parav Pandit.

 9) Support hw ipsec offload on bonding slaves, from Jarod Wilson.

10) Switch qca8k driver over to phylink, from Jonathan McDowell.

11) In bpftool, show list of processes holding BPF FD references to
    maps, programs, links, and btf objects. From Andrii Nakryiko.

12) Several conversions over to generic power management, from Vaibhav
    Gupta.

13) Add support for SO_KEEPALIVE et al. to bpf_setsockopt(), from Dmitry
    Yakunin.

14) Various https url conversions, from Alexander A. Klimov.

15) Timestamping and PHC support for mscc PHY driver, from Antoine
    Tenart.

16) Support bpf iterating over tcp and udp sockets, from Yonghong Song.

17) Support 5GBASE-T i40e NICs, from Aleksandr Loktionov.

18) Add kTLS RX HW offload support to mlx5e, from Tariq Toukan.

19) Fix the ->ndo_start_xmit() return type to be netdev_tx_t in several
    drivers. From Luc Van Oostenryck.

20) XDP support for xen-netfront, from Denis Kirjanov.

21) Support receive buffer autotuning in MPTCP, from Florian Westphal.

22) Support EF100 chip in sfc driver, from Edward Cree.

23) Add XDP support to mvpp2 driver, from Matteo Croce.

24) Support MPTCP in sock_diag, from Paolo Abeni.

25) Commonize UDP tunnel offloading code by creating udp_tunnel_nic
    infrastructure, from Jakub Kicinski.

26) Several pci_ --> dma_ API conversions, from Christophe JAILLET.

27) Add FLOW_ACTION_POLICE support to mlxsw, from Ido Schimmel.

28) Add SK_LOOKUP bpf program type, from Jakub Sitnicki.

29) Refactor a lot of networking socket option handling code in order to
    avoid set_fs() calls, from Christoph Hellwig.

30) Add rfc4884 support to icmp code, from Willem de Bruijn.

31) Support TBF offload in dpaa2-eth driver, from Ioana Ciornei.

32) Support XDP_REDIRECT in qede driver, from Alexander Lobakin.

33) Support PCI relaxed ordering in mlx5 driver, from Aya Levin.

34) Support TCP syncookies in MPTCP, from Flowian Westphal.

35) Fix several tricky cases of PMTU handling wrt. briding, from Stefano
    Brivio.

* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net-next: (2056 commits)
  net: thunderx: initialize VF's mailbox mutex before first usage
  usb: hso: remove bogus check for EINPROGRESS
  usb: hso: no complaint about kmalloc failure
  hso: fix bailout in error case of probe
  ip_tunnel_core: Fix build for archs without _HAVE_ARCH_IPV6_CSUM
  selftests/net: relax cpu affinity requirement in msg_zerocopy test
  mptcp: be careful on subflow creation
  selftests: rtnetlink: make kci_test_encap() return sub-test result
  selftests: rtnetlink: correct the final return value for the test
  net: dsa: sja1105: use detected device id instead of DT one on mismatch
  tipc: set ub->ifindex for local ipv6 address
  ipv6: add ipv6_dev_find()
  net: openvswitch: silence suspicious RCU usage warning
  Revert "vxlan: fix tos value before xmit"
  ptp: only allow phase values lower than 1 period
  farsync: switch from 'pci_' to 'dma_' API
  wan: wanxl: switch from 'pci_' to 'dma_' API
  hv_netvsc: do not use VF device if link is down
  dpaa2-eth: Fix passing zero to 'PTR_ERR' warning
  net: macb: Properly handle phylink on at91sam9x
  ...
2020-08-05 20:13:21 -07:00
Linus Torvalds
fffe3ae0ee hmm related patches for 5.9
This series adds reporting of the page table order from hmm_range_fault()
 and some optimization of migrate_vma():
 
 - Report the size of the page table mapping out of hmm_range_fault(). This
   makes it easier to establish a large/huge/etc mapping in the device's
   page table.
 
 - Allow devices to ignore the invalidations during migration in cases
   where the migration is not going to change pages. For instance migrating
   pages to a device does not require the device to invalidate pages
   already in the device.
 
 - Update nouveau and hmm_tests to use the above
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEfB7FMLh+8QxL+6i3OG33FX4gmxoFAl8oocYACgkQOG33FX4g
 mxqd3Q/+OClUADmrI+EGJAPI7VD3EYfyZdnMCcp39AYNfySQPN9+fCMF5hVD5U7x
 KZVflR/zKUIZJVvdD8yAdrynZ1sHBG/HEzDyoaKcGzfCKq5LEAEnP5FG3xsiDjkO
 QX7w6qIGDz59gaeanQKNzqaR3DMpBwO/0D5/80DWXv+WgmxsAphanJYlo4eWyq4D
 EGq8EndCxairkTLpPlDHvFottL5kAKDXEinSAwWGQeZJkRY93vj+HZAQaeltmB1K
 SDdZr7lsEg2RhtRjzT7CkA2bkCERKL3xEc4VWaCAZw+qm8aeswADVOSo5E5F7DMI
 NUsB/p4GZ2CvIog/y3g/aSGluevdYJHTH8ip1BnNr2qCcXSEqHKsmyKpVNZztSUl
 uljyT17ZzTsdR4xj50tM27fzgDaavWrwFZTsJxUifuvAO9rHvGDVpaN8ZIU9iZei
 PTsGQvfoHDmWBWKX1dkIUGq+UoGwEAYRGk+XU0OYZCK97xmjRnGVoH0FTOk4DNQs
 +A0250oTOrvdSGiv0fNT5qpWpFsQ/84h8Lz6ubAD3okVo1bk9cFMe2argQl+E2qI
 TGM9ZHS8rphJNWwiPm8xrgf9eQ9bNp3ilCsIzBBpqZq8elwaL6a3ySieDPE734Ar
 FZEeEYTvj5Z/gXtyo/gxVKhltCc4U8kPqye9uexTInz4zBUUZOM=
 =omAU
 -----END PGP SIGNATURE-----

Merge tag 'for-linus-hmm' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma

Pull hmm updates from Jason Gunthorpe:
 "Ralph has been working on nouveau's use of hmm_range_fault() and
  migrate_vma() which resulted in this small series. It adds reporting
  of the page table order from hmm_range_fault() and some optimization
  of migrate_vma():

   - Report the size of the page table mapping out of hmm_range_fault().

     This makes it easier to establish a large/huge/etc mapping in the
     device's page table.

   - Allow devices to ignore the invalidations during migration in cases
     where the migration is not going to change pages.

     For instance migrating pages to a device does not require the
     device to invalidate pages already in the device.

   - Update nouveau and hmm_tests to use the above"

* tag 'for-linus-hmm' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
  mm/hmm/test: use the new migration invalidation
  nouveau/svm: use the new migration invalidation
  mm/notifier: add migration invalidation type
  mm/migrate: add a flags parameter to migrate_vma
  nouveau: fix storing invalid ptes
  nouveau/hmm: support mapping large sysmem pages
  nouveau: fix mapping 2MB sysmem pages
  nouveau/hmm: fault one page at a time
  mm/hmm: add tests for hmm_pfn_to_map_order()
  mm/hmm: provide the page mapping order in hmm_range_fault()
2020-08-05 13:28:50 -07:00
Linus Torvalds
dd27111e32 Driver core changes for 5.9-rc1
Here is the "big" set of changes to the driver core, and some drivers
 using the changes, for 5.9-rc1.
 
 "Biggest" thing in here is the device link exposure in sysfs, to help
 to tame the madness that is SoC device tree representations and driver
 interactions with it.
 
 Other stuff in here that is interesting is:
 	- device probe log helper so that drivers can report problems in
 	  a unified way easier.
 	- devres functions added
 	- DEVICE_ATTR_ADMIN_* macro added to make it harder to write
 	  incorrect sysfs file permissions
 	- documentation cleanups
 	- ability for debugfs to be present in the kernel, yet not
 	  exposed to userspace.  Needed for systems that want it
 	  enabled, but do not trust users, so they can still use some
 	  kernel functions that were otherwise disabled.
 	- other minor fixes and cleanups
 
 The patches outside of drivers/base/ all have acks from the respective
 subsystem maintainers to go through this tree instead of theirs.
 
 All of these have been in linux-next with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 
 iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCXylhOQ8cZ3JlZ0Brcm9h
 aC5jb20ACgkQMUfUDdst+ylGdACeKqxm8IIDZycj0QjLUlPiEwVIROgAnjpf5jAB
 mb4jMvgEGsB6/FwxypPG
 =RUss
 -----END PGP SIGNATURE-----

Merge tag 'driver-core-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core

Pull driver core updates from Greg KH:
 "Here is the "big" set of changes to the driver core, and some drivers
  using the changes, for 5.9-rc1.

  "Biggest" thing in here is the device link exposure in sysfs, to help
  to tame the madness that is SoC device tree representations and driver
  interactions with it.

  Other stuff in here that is interesting is:

   - device probe log helper so that drivers can report problems in a
     unified way easier.

   - devres functions added

   - DEVICE_ATTR_ADMIN_* macro added to make it harder to write
     incorrect sysfs file permissions

   - documentation cleanups

   - ability for debugfs to be present in the kernel, yet not exposed to
     userspace. Needed for systems that want it enabled, but do not
     trust users, so they can still use some kernel functions that were
     otherwise disabled.

   - other minor fixes and cleanups

  The patches outside of drivers/base/ all have acks from the respective
  subsystem maintainers to go through this tree instead of theirs.

  All of these have been in linux-next with no reported issues"

* tag 'driver-core-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (39 commits)
  drm/bridge: lvds-codec: simplify error handling
  drm/bridge/sii8620: fix resource acquisition error handling
  driver core: add deferring probe reason to devices_deferred property
  driver core: add device probe log helper
  driver core: Avoid binding drivers to dead devices
  Revert "test_firmware: Test platform fw loading on non-EFI systems"
  firmware_loader: EFI firmware loader must handle pre-allocated buffer
  selftest/firmware: Add selftest timeout in settings
  test_firmware: Test platform fw loading on non-EFI systems
  driver core: Change delimiter in devlink device's name to "--"
  debugfs: Add access restriction option
  tracefs: Remove unnecessary debug_fs checks.
  driver core: Fix probe_count imbalance in really_probe()
  kobject: remove unused KOBJ_MAX action
  driver core: Fix sleeping in invalid context during device link deletion
  driver core: Add waiting_for_supplier sysfs file for devices
  driver core: Add state_synced sysfs file for devices that support it
  driver core: Expose device link details in sysfs
  driver core: Drop mention of obsolete bus rwsem from kernel-doc
  debugfs: file: Remove unnecessary cast in kfree()
  ...
2020-08-05 11:52:17 -07:00
Linus Torvalds
1785d11612 Char/Misc driver patches for 5.9-rc1
Here is the large set of char and misc and other driver subsystem
 patches for 5.9-rc1.  Lots of new driver submissions in here, and
 cleanups and features for existing drivers.
 
 Highlights are:
 	- habanalabs driver updates
 	- coresight driver updates
 	- nvmem driver updates
 	- huge number of "W=1" build warning cleanups from Lee Jones
 	- dyndbg updates
 	- virtbox driver fixes and updates
 	- soundwire driver updates
 	- mei driver updates
 	- phy driver updates
 	- fpga driver updates
 	- lots of smaller individual misc/char driver cleanups and fixes
 
 Full details are in the shortlog.
 
 All of these have been in linux-next with no reported issues.
 
 Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 -----BEGIN PGP SIGNATURE-----
 
 iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCXylccQ8cZ3JlZ0Brcm9h
 aC5jb20ACgkQMUfUDdst+ymofgCfZ1CxNWd0ZVM0YIn8cY9gO6ON7MsAnRq48hvn
 Vjf4rKM73GC11bVF4Gyy
 =Xq1R
 -----END PGP SIGNATURE-----

Merge tag 'char-misc-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

Pull char/misc driver updates from Greg KH:
 "Here is the large set of char and misc and other driver subsystem
  patches for 5.9-rc1. Lots of new driver submissions in here, and
  cleanups and features for existing drivers.

  Highlights are:
   - habanalabs driver updates
   - coresight driver updates
   - nvmem driver updates
   - huge number of "W=1" build warning cleanups from Lee Jones
   - dyndbg updates
   - virtbox driver fixes and updates
   - soundwire driver updates
   - mei driver updates
   - phy driver updates
   - fpga driver updates
   - lots of smaller individual misc/char driver cleanups and fixes

  Full details are in the shortlog.

  All of these have been in linux-next with no reported issues"

* tag 'char-misc-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (322 commits)
  habanalabs: remove unused but set variable 'ctx_asid'
  nvmem: qcom-spmi-sdam: Enable multiple devices
  dt-bindings: nvmem: SID: add binding for A100's SID controller
  nvmem: update Kconfig description
  nvmem: qfprom: Add fuse blowing support
  dt-bindings: nvmem: Add properties needed for blowing fuses
  dt-bindings: nvmem: qfprom: Convert to yaml
  nvmem: qfprom: use NVMEM_DEVID_AUTO for multiple instances
  nvmem: core: add support to auto devid
  nvmem: core: Add nvmem_cell_read_u8()
  nvmem: core: Grammar fixes for help text
  nvmem: sc27xx: add sc2730 efuse support
  nvmem: Enforce nvmem stride in the sysfs interface
  MAINTAINERS: Add git tree for NVMEM FRAMEWORK
  nvmem: sprd: Fix return value of sprd_efuse_probe()
  drivers: android: Fix the SPDX comment style
  drivers: android: Fix a variable declaration coding style issue
  drivers: android: Remove braces for a single statement if-else block
  drivers: android: Remove the use of else after return
  drivers: android: Fix a variable declaration coding style issue
  ...
2020-08-05 11:43:47 -07:00
Linus Torvalds
53e5504bdb linux-kselftest-kunit-5.9-rc1
This Kunit update for Linux 5.9-rc1 consists of:
 
 - Adds a generic kunit_resource API extending it to support
   resources that are passed in to kunit in addition kunit
   allocated resources. In addition, KUnit resources are now
   refcounted to avoid passed in resources being released while
   in use by kunit.
 
 - Add support for named resources.
 
 - Important bug fixes from Brendan Higgins and Will Chen
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEPZKym/RZuOCGeA/kCwJExA0NQxwFAl8pyI4ACgkQCwJExA0N
 QxwQmQ//YXvS1IMt4yLQ7iTrhSK2CavzPi/zX+1bgXj7RfEPrdolF12tcHf7b/Ef
 UwhG/PTEE6VkBWFuprleGk0fvVW9h13K+2RkN6wkx8rmTMunMhqmMIRj4neGQWQH
 LV9bYcc5HBH36jbSnJYMFDJdsATq3mmPMeknzkJf/qZgWxczBLo3pUHPNRuhZWq7
 MaRUutpo1f3oSroxhcY8gouRjjPq+yUCip9EeQfdZc/LV9tqjwhjfo+zRKAY3jGf
 0KL00wv4NMTNBSgLkxXFrTcyP28Y84MZB+wE3ikyE5a5wzzvMXuEtZhJk9a9q2ZJ
 tZI+ICCjnTa+E3pN93F2w7cwyrQysxNH1tpK0qv1hGXLRuxOGCJ993AeUtIWjnyV
 CYh/OGK9o92pRuTmoJnMNk9em1WF45YTtvhzpadPiBGb84nbxYSAlrDmm/4xC89p
 7PPpkkVxFReMiu1fIyXOV++y33YFMDtoWe/Qn3pLBRpDDs/XWdK0eT4dVWx1/ttl
 BdtbAxXafApVI5lGk1qPoGC1MO9XvaAidQP6PULD/rhw2Ww6rtlvwGVPffx/omkn
 zgzPTxH1rBehzKPcEaorQqqR6yGXxb4v+gJi1Tg8qRE51Lw619dfyZlJO7axp2h6
 7RO3BOVrIkwLP9XT2NPlL6t+RqbQXezGoZjigLmBRlCSvs1lbLs=
 =kIIk
 -----END PGP SIGNATURE-----

Merge tag 'linux-kselftest-kunit-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull kunit updates from Shuah Khan:

 - Add a generic kunit_resource API extending it to support resources
   that are passed in to kunit in addition kunit allocated resources. In
   addition, KUnit resources are now refcounted to avoid passed in
   resources being released while in use by kunit.

 - Add support for named resources.

 - Important bug fixes from Brendan Higgins and Will Chen

* tag 'linux-kselftest-kunit-5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  kunit: tool: fix improper treatment of file location
  kunit: tool: fix broken default args in unit tests
  kunit: capture stderr on all make subprocess calls
  Documentation: kunit: Remove references to --defconfig
  kunit: add support for named resources
  kunit: generalize kunit_resource API beyond allocated resources
2020-08-05 10:07:39 -07:00
Linus Torvalds
2324d50d05 It's been a busy cycle for documentation - hopefully the busiest for a
while to come.  Changes include:
 
  - Some new Chinese translations
 
  - Progress on the battle against double words words and non-HTTPS URLs
 
  - Some block-mq documentation
 
  - More RST conversions from Mauro.  At this point, that task is
    essentially complete, so we shouldn't see this kind of churn again for a
    while.  Unless we decide to switch to asciidoc or something...:)
 
  - Lots of typo fixes, warning fixes, and more.
 -----BEGIN PGP SIGNATURE-----
 
 iQFDBAABCAAtFiEEIw+MvkEiF49krdp9F0NaE2wMflgFAl8oVkwPHGNvcmJldEBs
 d24ubmV0AAoJEBdDWhNsDH5YoW8H/jJ/xnXFn7tkgVPQAlL3k5HCnK7A5nDP9RVR
 cg1pTx1cEFdjzxPlJyExU6/v+AImOvtweHXC+JDK7YcJ6XFUNYXJI3LxL5KwUXbY
 BL/xRFszDSXH2C7SJF5GECcFYp01e/FWSLN3yWAh+g+XwsKiTJ8q9+CoIDkHfPGO
 7oQsHKFu6s36Af0LfSgxk4sVB7EJbo8e4psuPsP5SUrl+oXRO43Put0rXkR4yJoH
 9oOaB51Do5fZp8I4JVAqGXvpXoExyLMO4yw0mASm6YSZ3KyjR8Fae+HD9Cq4ZuwY
 0uzb9K+9NEhqbfwtyBsi99S64/6Zo/MonwKwevZuhtsDTK4l4iU=
 =JQLZ
 -----END PGP SIGNATURE-----

Merge tag 'docs-5.9' of git://git.lwn.net/linux

Pull documentation updates from Jonathan Corbet:
 "It's been a busy cycle for documentation - hopefully the busiest for a
  while to come. Changes include:

   - Some new Chinese translations

   - Progress on the battle against double words words and non-HTTPS
     URLs

   - Some block-mq documentation

   - More RST conversions from Mauro. At this point, that task is
     essentially complete, so we shouldn't see this kind of churn again
     for a while. Unless we decide to switch to asciidoc or
     something...:)

   - Lots of typo fixes, warning fixes, and more"

* tag 'docs-5.9' of git://git.lwn.net/linux: (195 commits)
  scripts/kernel-doc: optionally treat warnings as errors
  docs: ia64: correct typo
  mailmap: add entry for <alobakin@marvell.com>
  doc/zh_CN: add cpu-load Chinese version
  Documentation/admin-guide: tainted-kernels: fix spelling mistake
  MAINTAINERS: adjust kprobes.rst entry to new location
  devices.txt: document rfkill allocation
  PCI: correct flag name
  docs: filesystems: vfs: correct flag name
  docs: filesystems: vfs: correct sync_mode flag names
  docs: path-lookup: markup fixes for emphasis
  docs: path-lookup: more markup fixes
  docs: path-lookup: fix HTML entity mojibake
  CREDITS: Replace HTTP links with HTTPS ones
  docs: process: Add an example for creating a fixes tag
  doc/zh_CN: add Chinese translation prefer section
  doc/zh_CN: add clearing-warn-once Chinese version
  doc/zh_CN: add admin-guide index
  doc:it_IT: process: coding-style.rst: Correct __maybe_unused compiler label
  futex: MAINTAINERS: Re-add selftests directory
  ...
2020-08-04 22:47:54 -07:00
Linus Torvalds
a754292348 Printk changes for 5.9
-----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEESH4wyp42V4tXvYsjUqAMR0iAlPIFAl8pk84ACgkQUqAMR0iA
 lPIrTxAAhD6fosJx+7LCrDRABIw/ZybeS5MIxTuPsNtdMmGBemigew5Ao1wYY6Ww
 3BFiNC2LpDXPxSOCQpz0Zm5/oCLhShPJmS6ukjLbufDsiw0MezliKCAa2Bfw3W31
 6xntQtf7ps+bmTEQDyuznu8Kfg+I3lmdGUOEBBluHIP4gb7XKQE8ttyUHB6qdiXI
 3eAl53Q8dOMMjtk5eNBXA19JY43g4JmLZRBumrAUc1vsv15KTDmSyWKlV8+tLH9K
 JbQAHe0pNVec4sJUIYLvIwDZXvtsvxjdJyX3tTeZ7xJ/ARcvRLoixVGqWxKhqdth
 j5U/L+YQfCJifyqvEVo03yy4Ti+OraliRpGcRf/bM2HpmFBA2+dISr7/VEqRwkG7
 Sy8HuvBHHyUqdrPjB7izhv8iyRN+LxFfpdT5LMnzsvxMxAJ+QwNjxb13RA4kkeRU
 5SgOhfGWgTsLy71J6qdSeXYB2oPFw4Onp5yAtoUsOJVYqWkN9x0zdl+9HmqIHF7T
 dY+KNriEO6gmpsQrMR4FC/GVMtwYWf8AoqeZen5O5SQULmzuKQ5AkOo0IAMrU92i
 iAdFrSZj35HAQjIJRccPNGZ3FwTd1Z4r5GT7VRvrN+nq2wVopzbbz924/lmsGoAS
 YppAw31sKfXDc5uWE8jP8GP3OJqhORn2PPXq3D5Q3XSVbGgey0Q=
 =ZcMq
 -----END PGP SIGNATURE-----

Merge tag 'printk-for-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux

Pull printk updates from Petr Mladek:

 - Herbert Xu made printk header file self-contained.

 - Andy Shevchenko and Sergey Senozhatsky cleaned up console->setup()
   error handling.

 - Andy Shevchenko did some cleanups (e.g. sparse warning) in vsprintf
   code.

 - Minor documentation updates.

* tag 'printk-for-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/printk/linux:
  lib/vsprintf: Force type of flags value for gfp_t
  lib/vsprintf: Replace custom spec to print decimals with generic one
  lib/vsprintf: Replace hidden BUILD_BUG_ON() with static_assert()
  printk: Make linux/printk.h self-contained
  doc:kmsg: explicitly state the return value in case of SEEK_CUR
  Replace HTTP links with HTTPS ones: vsprintf
  hvc: unify console setup naming
  console: Fix trivia typo 'change' -> 'chance'
  console: Propagate error code from console ->setup()
  tty: hvc: Return proper error code from console ->setup() hook
  serial: sunzilog: Return proper error code from console ->setup() hook
  serial: sunsab: Return proper error code from console ->setup() hook
  mips: Return proper error code from console ->setup() hook
2020-08-04 22:22:25 -07:00
Linus Torvalds
99ea1521a0 Remove uninitialized_var() macro for v5.9-rc1
- Clean up non-trivial uses of uninitialized_var()
 - Update documentation and checkpatch for uninitialized_var() removal
 - Treewide removal of uninitialized_var()
 -----BEGIN PGP SIGNATURE-----
 
 iQJKBAABCgA0FiEEpcP2jyKd1g9yPm4TiXL039xtwCYFAl8oYLQWHGtlZXNjb29r
 QGNocm9taXVtLm9yZwAKCRCJcvTf3G3AJsfjEACvf0D3WL3H7sLHtZ2HeMwOgAzq
 il08t6vUscINQwiIIK3Be43ok3uQ1Q+bj8sr2gSYTwunV2IYHFferzgzhyMMno3o
 XBIGd1E+v1E4DGBOiRXJvacBivKrfvrdZ7AWiGlVBKfg2E0fL1aQbe9AYJ6eJSbp
 UGqkBkE207dugS5SQcwrlk1tWKUL089lhDAPd7iy/5RK76OsLRCJFzIerLHF2ZK2
 BwvA+NWXVQI6pNZ0aRtEtbbxwEU4X+2J/uaXH5kJDszMwRrgBT2qoedVu5LXFPi8
 +B84IzM2lii1HAFbrFlRyL/EMueVFzieN40EOB6O8wt60Y4iCy5wOUzAdZwFuSTI
 h0xT3JI8BWtpB3W+ryas9cl9GoOHHtPA8dShuV+Y+Q2bWe1Fs6kTl2Z4m4zKq56z
 63wQCdveFOkqiCLZb8s6FhnS11wKtAX4czvXRXaUPgdVQS1Ibyba851CRHIEY+9I
 AbtogoPN8FXzLsJn7pIxHR4ADz+eZ0dQ18f2hhQpP6/co65bYizNP5H3h+t9hGHG
 k3r2k8T+jpFPaddpZMvRvIVD8O2HvJZQTyY6Vvneuv6pnQWtr2DqPFn2YooRnzoa
 dbBMtpon+vYz6OWokC5QNWLqHWqvY9TmMfcVFUXE4AFse8vh4wJ8jJCNOFVp8On+
 drhmmImUr1YylrtVOw==
 =xHmk
 -----END PGP SIGNATURE-----

Merge tag 'uninit-macro-v5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux

Pull uninitialized_var() macro removal from Kees Cook:
 "This is long overdue, and has hidden too many bugs over the years. The
  series has several "by hand" fixes, and then a trivial treewide
  replacement.

   - Clean up non-trivial uses of uninitialized_var()

   - Update documentation and checkpatch for uninitialized_var() removal

   - Treewide removal of uninitialized_var()"

* tag 'uninit-macro-v5.9-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
  compiler: Remove uninitialized_var() macro
  treewide: Remove uninitialized_var() usage
  checkpatch: Remove awareness of uninitialized_var() macro
  mm/debug_vm_pgtable: Remove uninitialized_var() usage
  f2fs: Eliminate usage of uninitialized_var() macro
  media: sur40: Remove uninitialized_var() usage
  KVM: PPC: Book3S PR: Remove uninitialized_var() usage
  clk: spear: Remove uninitialized_var() usage
  clk: st: Remove uninitialized_var() usage
  spi: davinci: Remove uninitialized_var() usage
  ide: Remove uninitialized_var() usage
  rtlwifi: rtl8192cu: Remove uninitialized_var() usage
  b43: Remove uninitialized_var() usage
  drbd: Remove uninitialized_var() usage
  x86/mm/numa: Remove uninitialized_var() usage
  docs: deprecated.rst: Add uninitialized_var()
2020-08-04 13:49:43 -07:00
Linus Torvalds
09a0bd0776 platform-drivers-x86 for v5.9-1
* ASUS WMI driver honors BAT1 name of the battery
   (quite a few new laptops are using it)
 * Dell WMI driver supports new key codes and backlight events
 * ThinkPad ACPI driver now may use standard charge threshold interface,
   it also has been updated to provide Laptop or Desktop mode to the user
 * Intel Speed Select Technology gained support on Sapphire Rapids platform
 * Regular update of Speed Select Technology tools
 * Mellanox has been updated to support complex attributes
 * PMC core driver has been fixed to show correct names for LPM0 register
 * HTTP links were replaced by HTTPS ones where it applies
 * Miscellaneous fixes and cleanups here and there
 
 The following is an automated git shortlog grouped by driver:
 
 acerhdf:
  -  Replace HTTP links with HTTPS ones
 
 Add new intel_atomisp2_led driver:
  - Add new intel_atomisp2_led driver
 
 apple-gmux:
  -  Replace HTTP links with HTTPS ones
 
 asus-nb-wmi:
  -  Drop duplicate DMI quirk structures
  -  add support for ASUS ROG Zephyrus G14 and G15
 
 asus-wmi:
  -  allow BAT1 battery name
 
 dell-wmi:
  -  add new dmi mapping for keycode 0xffff
  -  add new keymap type 0x0012
  -  add new backlight events
 
 intel_cht_int33fe:
  -  Drop double check for ACPI companion device
 
 intel-hid:
  -  Fix return value check in check_acpi_dev()
 
 intel_pmc_core:
  -  fix bound check in pmc_core_mphy_pg_show()
  -  update TGL's LPM0 reg bit map name
 
 intel-vbtn:
  -  Fix return value check in check_acpi_dev()
 
 ISST:
  -  drop a duplicated word in isst_if.h
  -  Add new PCI device ids
 
 pcengines-apuv2:
  -  revert wiring up simswitch GPIO as LED
 
 platform/mellanox:
  -  Introduce string_upper() and string_lower() helpers
  -  Add string_upper() and string_lower() tests
  -  Extend FAN platform data description
  -  Add more definitions for system attributes
  -  Add new attribute for mlxreg-io sysfs interfaces
  -  Add presence register field for FAN devices
  -  Add support for complex attributes
  -  mlxreg-io: Add support for complex attributes
  -  mlxreg-hotplug: Add environmental data to uevent
  -  mlxreg-hotplug: Use capability register for attribute creation
  -  mlxreg-hotplug: Modify module license
 
 system76-acpi:
  -  Fix brightness_set schedule while atomic
 
 thinkpad_acpi:
  -  Make some symbols static
  -  add documentation for battery charge control
  -  use standard charge control attribute names
  -  remove unused defines
  -  Replace HTTP links with HTTPS ones
  -  not loading brightness_init when _BCL invalid
  -  lap or desk mode interface
  -  Revert "Use strndup_user() in dispatch_proc_write()"
 
 tools/power/x86/intel-speed-select:
  -  Update version for v5.9
  -  Add retries for mail box commands
  -  Add option to delay mbox commands
  -  Ignore -o option processing on error
  -  Change path for caching topology info
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCgAdFiEEqaflIX74DDDzMJJtb7wzTHR8rCgFAl8n9UIACgkQb7wzTHR8
 rCg0cRAAnHC699qMns53T+jSMAc9kY5vrwbf2Bacwjp5vYS7uw3S12kLNgQh6JWM
 B8imS1RAMlHfCvGT9vUs+mbpemCfYpFZ0HQ4z+VMzziKayJu8pCD9O2XDS9lRUHj
 uKqA19FX6lXfJnrhRoi3vM0JC35FXZQZkueLyJ728t1xqcDkNS2/O/by3c76XnK1
 r81jl9m+qMJwB5zt+6qeSWjZAgFCTDvOHA/gZTEKF1VBOcafN1RHWTLH49JtpBH7
 +pPoy9mw3zfDJReqKxFhaXgDlueBlRwTBG5kEQk9aIxgA9T8q2jqEyAw5XtAKOWp
 RCebgCpC5NHXyz/2CVzaJWYikS/Iuvr4ynx6F2nKXVClGMtF7Obb2/3rvSCOTMri
 ge1bJ2NomUL9F5Cd/iR/F4/jNtxk9LSuzW+otA+/m+g8UkK574cefQQmBdrhrfDU
 GqK6C1kB7OQW2v3tPKVsWvduXQTaaCVzINEkdUxK50PXZayY7+w0djM+QFR/sadw
 2/okr1zuNjFnEt7HtZRP5bzEm1ofXVo5JIaCnpwgsz6dCQH4NiuVxsc/GyanRpBJ
 AadUAYcD+PRRnOybsfhx5MlUt/JIr6cV0OvT8LlWPINJjTpWPlqMeBYdDUOLCndX
 3LXmoZ0k8IQ2LLmONc5UBX1+iayCO+PkHcBDoJdNuWT1eoO06M8=
 =yvnW
 -----END PGP SIGNATURE-----

Merge tag 'platform-drivers-x86-v5.9-1' of git://git.infradead.org/linux-platform-drivers-x86

Pull x86 platform driver updates from Andy Shevchenko:

 - ASUS WMI driver honors BAT1 name of the battery (quite a few new
   laptops are using it)

 - Dell WMI driver supports new key codes and backlight events

 - ThinkPad ACPI driver now may use standard charge threshold interface,
   it also has been updated to provide Laptop or Desktop mode to the
   user

 - Intel Speed Select Technology gained support on Sapphire Rapids
   platform

 - Regular update of Speed Select Technology tools

 - Mellanox has been updated to support complex attributes

 - PMC core driver has been fixed to show correct names for LPM0
   register

 - HTTP links were replaced by HTTPS ones where it applies

 - Miscellaneous fixes and cleanups here and there

* tag 'platform-drivers-x86-v5.9-1' of git://git.infradead.org/linux-platform-drivers-x86: (42 commits)
  platform/x86: asus-nb-wmi: Drop duplicate DMI quirk structures
  platform/x86: thinkpad_acpi: Make some symbols static
  platform/x86: thinkpad_acpi: add documentation for battery charge control
  platform/x86: thinkpad_acpi: use standard charge control attribute names
  platform/x86: thinkpad_acpi: remove unused defines
  platform/x86: ISST: drop a duplicated word in isst_if.h
  tools/power/x86/intel-speed-select: Update version for v5.9
  tools/power/x86/intel-speed-select: Add retries for mail box commands
  tools/power/x86/intel-speed-select: Add option to delay mbox commands
  tools/power/x86/intel-speed-select: Ignore -o option processing on error
  tools/power/x86/intel-speed-select: Change path for caching topology info
  platform/x86: acerhdf: Replace HTTP links with HTTPS ones
  platform/x86: apple-gmux: Replace HTTP links with HTTPS ones
  platform/x86: pcengines-apuv2: revert wiring up simswitch GPIO as LED
  platform/x86: mlx-platform: Extend FAN platform data description
  platform_data/mlxreg: Add presence register field for FAN devices
  Documentation/ABI: Add new attribute for mlxreg-io sysfs interfaces
  platform/mellanox: mlxreg-io: Add support for complex attributes
  platform/x86: mlx-platform: Add more definitions for system attributes
  platform_data/mlxreg: Add support for complex attributes
  ...
2020-08-03 18:02:53 -07:00
Linus Torvalds
0a897743ac A single commit that adds the /sys/kernel/debug/selftest_helpers/test_fpu FPU self-test.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
 -----BEGIN PGP SIGNATURE-----
 
 iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAl8oUawRHG1pbmdvQGtl
 cm5lbC5vcmcACgkQEnMQ0APhK1iIxw//dFlYF9W5W5dBOK0keLlUiHr2WG77Emwz
 I1+sGfTIZAkWCrbCYhVBSOr3tfQ+aJ/HHNlVLHYX9USah297z3gLUZJ+pVdvPPO7
 Sb56KwZ/0d6usiuullirSe2btCV+qEtxGJVVqeR9YpcEW6If9Nhp2r1eLzqjo9up
 M6MJKtGeLBuifjPU5zyay7cAE1fW4LxA92fEWtG5GXbMSCndrU0defwge4iQFYD+
 RnbAuDf/L9pe8dbOfvnH6K12mBeoD6Z3MnMXiUTu6zvivp4hQshfKw24BCKBKlRZ
 kkZ16pVKX48sXulhI89ppVUJGUhmhSF/1mrPZSi1PbZltZcS+oCH5GEGTM9KCHfR
 HKsUl1lxNjTKU3cTZLyYMQqniiPj51h53h7DhDyTdh3RW+Dh6wp2DhoaRpZw0Nd+
 8VUpbMSNKlEbPzuHT5z8XjcwPIynoxxLCo2AGRbEuoeuY9Sv337ST/pvXdPbdRX+
 1Y8PPOpB3xgBnFZur3VXHdIFz0CwS7XoX56ZLY7ahWzBHNP+BHhICPY//QhyWfMf
 mVeJSRdSHlF30Sle/xDoy6up5EqlbhclUUwhpQwFaSqPMBo6ygb6Xtya/tLXmDUz
 bl4qJNVs2RFaH+68XTlCh7lUnDaSDjBXlA6Ymo3qF9AE0FJoqvfzzKRPKs68YVu8
 a38VxITW1sI=
 =mdhI
 -----END PGP SIGNATURE-----

Merge tag 'x86-fpu-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 FPU selftest from Ingo Molnar:
 "Add the /sys/kernel/debug/selftest_helpers/test_fpu FPU self-test"

* tag 'x86-fpu-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  selftests/fpu: Add an FPU selftest
2020-08-03 17:21:10 -07:00
Linus Torvalds
c0dfadfed8 The main change in this cycle was to add support for ZSTD-compressed
kernel and initrd images.
 
 ZSTD has a very fast decompressor, yet it compresses better than gzip.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
 -----BEGIN PGP SIGNATURE-----
 
 iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAl8oNX0RHG1pbmdvQGtl
 cm5lbC5vcmcACgkQEnMQ0APhK1jdcg/9GaPGjmNgMqi3tbfzU3z11OrbraRBgMj5
 jHIZ89DuzwsqU+jbwGHGiF45ge85iPK6i2ovR3ePzL0LAlLYT3gqzPcl3kkog4E9
 0E0JAddx974uW4toc8cGFEHNf4vXtvvi45FL2yvDoap9xLEcpJsQRdu9upPB4U3s
 +qotO6wJitM74g4l2WdbStzCAcL4ZXFA/ix19nUyLh4QlFBDqUHwufIhW1G0ciL4
 txMXJ23L7e+b6FUvGyK3vFhba1isPdz5xQdQTy2DCK20rQhGu1IBsqzymEibbgIp
 /j4yHfUKSpxdblFcpZfknI1VM1mbt/WN5dKDKm9UnYBhA/R/2PN0klfrAQAT4SOS
 sP3bxXqTRXBjmop0NjOLCdjGCySYnPLFPlB6REIrMcvs6LYUSTqMZEusj7McwD7h
 IqS4zGEMa5A+c6Q4160Qz+zrXIyh/n/bTR/6uOKUktkUQaJ+079P64NK9RtCYZTk
 dkIHJChjmWZGxxXHEbo+4e7bM8gAMHDmX2pdWE5u72oYJRqBv7PVyl+SHBk+onxM
 crtKvqOp8Q8coirlfjx5UynZeZmH1VuIFjpvnwlAtqxZGvuTWZ0ojq3E3Y/XwHQj
 bVejr9AQ1gS9ZBTKwwd5cf7mnOuiXrHrBP3E7buoRw8bWtL+yqHyybqccZnSOUVN
 lGFshs+7J5o=
 =bARW
 -----END PGP SIGNATURE-----

Merge tag 'x86-boot-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 boot updates from Ingo Molnar:
 "The main change in this cycle was to add support for ZSTD-compressed
  kernel and initrd images.

  ZSTD has a very fast decompressor, yet it compresses better than gzip"

* tag 'x86-boot-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  Documentation: dontdiff: Add zstd compressed files
  .gitignore: Add ZSTD-compressed files
  x86: Add support for ZSTD compressed kernel
  x86: Bump ZO_z_extra_bytes margin for zstd
  usr: Add support for zstd compressed initramfs
  init: Add support for zstd compressed kernel
  lib: Add zstd support to decompress
  lib: Prepare zstd for preboot environment, improve performance
2020-08-03 16:03:23 -07:00
Linus Torvalds
e4cbce4d13 The main changes in this cycle were:
- Improve uclamp performance by using a static key for the fast path
 
  - Add the "sched_util_clamp_min_rt_default" sysctl, to optimize for
    better power efficiency of RT tasks on battery powered devices.
    (The default is to maximize performance & reduce RT latencies.)
 
  - Improve utime and stime tracking accuracy, which had a fixed boundary
    of error, which created larger and larger relative errors as the values
    become larger. This is now replaced with more precise arithmetics,
    using the new mul_u64_u64_div_u64() helper in math64.h.
 
  - Improve the deadline scheduler, such as making it capacity aware
 
  - Improve frequency-invariant scheduling
 
  - Misc cleanups in energy/power aware scheduling
 
  - Add sched_update_nr_running tracepoint to track changes to nr_running
 
  - Documentation additions and updates
 
  - Misc cleanups and smaller fixes
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
 -----BEGIN PGP SIGNATURE-----
 
 iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAl8oJDURHG1pbmdvQGtl
 cm5lbC5vcmcACgkQEnMQ0APhK1ixLg//bqWzFlfWirvngTgDxDnplwUTyKXmMCcq
 R1IYhlyK2O5FxvhbRmdmW11W3yzyTPvgCs6Q/70negGaPNe2w1OxfxiK9NMKz5eu
 M1LoXas7pL5g7Pr/ZxxHk/8VqJLV4t9MkodiiInmV6lTaznT3sU6a/kpYQjJyFnG
 Tuu9jd6JhdRKmePDJnNmUBoGQ7JiOQDcX4HtkcQ3OA+An3624tmJzbW1yts+uj7J
 ZWo2EY60RfbA9MxQXGPOaR/nAjngWs4Q6tddAh10mftsPq1gR2iFUKju1d31MQt/
 RHLdiqJf+AyUC4popKG7a+7ilCKMBwPociSreTJNPyEUQ1X4AM3vUVk4yjUoiDph
 k2WdsCF8/JRdhXg0NnrpPUqOaAbQj53EeXnitEb92E7WyTZgLOvAtpV//xZo6utp
 2QHerfrQ9SoGQjz/ho78za5vQtV1x25yDhd+X4XV4QEhIy85G9/2JCpC/Kc/TXLf
 OO7A4X69XztKTEJhP60g8ldCPUe4N2vbh1vKY6oAD8AFQVVNZ6n7375/Qa//b0/k
 ++hcYkPc2EK97/aBFdvzDgqb7aUo7Mtn2ibke16sQU4szulaoRuAHQG4jdGKMwbD
 dk2VBoxyxeYFXWHsNneSe87+ha3sd0dSN0ul1EB/SlFrVELMvy634YXnMYGW8ima
 PzyPB0ezpuA=
 =PbO7
 -----END PGP SIGNATURE-----

Merge tag 'sched-core-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull scheduler updates from Ingo Molnar:

 - Improve uclamp performance by using a static key for the fast path

 - Add the "sched_util_clamp_min_rt_default" sysctl, to optimize for
   better power efficiency of RT tasks on battery powered devices.
   (The default is to maximize performance & reduce RT latencies.)

 - Improve utime and stime tracking accuracy, which had a fixed boundary
   of error, which created larger and larger relative errors as the
   values become larger. This is now replaced with more precise
   arithmetics, using the new mul_u64_u64_div_u64() helper in math64.h.

 - Improve the deadline scheduler, such as making it capacity aware

 - Improve frequency-invariant scheduling

 - Misc cleanups in energy/power aware scheduling

 - Add sched_update_nr_running tracepoint to track changes to nr_running

 - Documentation additions and updates

 - Misc cleanups and smaller fixes

* tag 'sched-core-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (54 commits)
  sched/doc: Factorize bits between sched-energy.rst & sched-capacity.rst
  sched/doc: Document capacity aware scheduling
  sched: Document arch_scale_*_capacity()
  arm, arm64: Fix selection of CONFIG_SCHED_THERMAL_PRESSURE
  Documentation/sysctl: Document uclamp sysctl knobs
  sched/uclamp: Add a new sysctl to control RT default boost value
  sched/uclamp: Fix a deadlock when enabling uclamp static key
  sched: Remove duplicated tick_nohz_full_enabled() check
  sched: Fix a typo in a comment
  sched/uclamp: Remove unnecessary mutex_init()
  arm, arm64: Select CONFIG_SCHED_THERMAL_PRESSURE
  sched: Cleanup SCHED_THERMAL_PRESSURE kconfig entry
  arch_topology, sched/core: Cleanup thermal pressure definition
  trace/events/sched.h: fix duplicated word
  linux/sched/mm.h: drop duplicated words in comments
  smp: Fix a potential usage of stale nr_cpus
  sched/fair: update_pick_idlest() Select group with lowest group_util when idle_cpus are equal
  sched: nohz: stop passing around unused "ticks" parameter.
  sched: Better document ttwu()
  sched: Add a tracepoint to track rq->nr_running
  ...
2020-08-03 14:58:38 -07:00
Linus Torvalds
9ba19ccd2d These were the main changes in this cycle:
- LKMM updates: mostly documentation changes, but also some new litmus tests for atomic ops.
 
  - KCSAN updates: the most important change is that GCC 11 now has all fixes in place
                   to support KCSAN, so GCC support can be enabled again. Also more annotations.
 
  - futex updates: minor cleanups and simplifications
 
  - seqlock updates: merge preparatory changes/cleanups for the 'associated locks' facilities.
 
  - lockdep updates:
     - simplify IRQ trace event handling
     - add various new debug checks
     - simplify header dependencies, split out <linux/lockdep_types.h>, decouple
       lockdep from other low level headers some more
     - fix NMI handling
 
  - misc cleanups and smaller fixes
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
 -----BEGIN PGP SIGNATURE-----
 
 iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAl8n9/wRHG1pbmdvQGtl
 cm5lbC5vcmcACgkQEnMQ0APhK1hZFQ//dD+AKw9Nym+WbylovmeD0qxWxPyeN/jG
 vBVDTOJIJLtZTkZf6YHcYOJlPwaMDYUQluqTPQhsaQZy/NoEb5NM2cFAj2R9gjyT
 O8665T1dvhW9Sh353mBpuwviqdrnvCeHTBEcglSlFY7hxToYAflUN0+DXGVtNys8
 PFNf3L9SHT0GLVC8+di/eJzQaRqxiB0Pq7kvh2RvPJM/dcQNA9Ho3CCNO5j6qGoY
 u7OnMT8xJXkgbdjjUO4RO0v9VjMuNthZ2JiONDgvgKtJfIL2wt5YXIv1EYX0GuWp
 WZgIzE4o1G7GJOOzKpFfZFyK8grHu2fWgK1plvodWjlLkBmltJZ1qyOM+wngd/m2
 TgtPo73/YFbxFUbbBpkb0eiIaH2t99kMvfCWd05+GiPCtzn9UL9GfFRWd42vonwc
 sQWjFrHKlnuzifUfNcLmKg7R2nUtF3Dm/SydiTJ+9NtH/QA17YJKWnlE1moulNtQ
 p7H7+8UdcvSQ7F38A74v2IYNIyDsv5qcE8ar4QHdaanBBX/LCyD0UlfgsgxEReXf
 GDKkpx7LFQlI6Y2YB+dZgkCwhNBl3/OQ3v6hC95B37fA67dAIQyPIWHiHbaM+029
 gghqU4GcUcbjSnHPzl9PPL+hi9MyXrMjpb7CBXytg4NI4EE1waHR+0kX14V8ndRj
 MkWQOKPUgB0=
 =3MTT
 -----END PGP SIGNATURE-----

Merge tag 'locking-core-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull locking updates from Ingo Molnar:

 - LKMM updates: mostly documentation changes, but also some new litmus
   tests for atomic ops.

 - KCSAN updates: the most important change is that GCC 11 now has all
   fixes in place to support KCSAN, so GCC support can be enabled again.
   Also more annotations.

 - futex updates: minor cleanups and simplifications

 - seqlock updates: merge preparatory changes/cleanups for the
   'associated locks' facilities.

 - lockdep updates:
    - simplify IRQ trace event handling
    - add various new debug checks
    - simplify header dependencies, split out <linux/lockdep_types.h>,
      decouple lockdep from other low level headers some more
    - fix NMI handling

 - misc cleanups and smaller fixes

* tag 'locking-core-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (60 commits)
  kcsan: Improve IRQ state trace reporting
  lockdep: Refactor IRQ trace events fields into struct
  seqlock: lockdep assert non-preemptibility on seqcount_t write
  lockdep: Add preemption enabled/disabled assertion APIs
  seqlock: Implement raw_seqcount_begin() in terms of raw_read_seqcount()
  seqlock: Add kernel-doc for seqcount_t and seqlock_t APIs
  seqlock: Reorder seqcount_t and seqlock_t API definitions
  seqlock: seqcount_t latch: End read sections with read_seqcount_retry()
  seqlock: Properly format kernel-doc code samples
  Documentation: locking: Describe seqlock design and usage
  locking/qspinlock: Do not include atomic.h from qspinlock_types.h
  locking/atomic: Move ATOMIC_INIT into linux/types.h
  lockdep: Move list.h inclusion into lockdep.h
  locking/lockdep: Fix TRACE_IRQFLAGS vs. NMIs
  futex: Remove unused or redundant includes
  futex: Consistently use fshared as boolean
  futex: Remove needless goto's
  futex: Remove put_futex_key()
  rwsem: fix commas in initialisation
  docs: locking: Replace HTTP links with HTTPS ones
  ...
2020-08-03 14:39:35 -07:00
Linus Torvalds
8f0cb6660a These are the latest RCU bits for v5.9:
- kfree_rcu updates
   - RCU tasks updates
   - Read-side scalability tests
   - SRCU updates
   - Torture-test updates
   - Documentation updates
   - Miscellaneous fixes
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
 -----BEGIN PGP SIGNATURE-----
 
 iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAl8n80ERHG1pbmdvQGtl
 cm5lbC5vcmcACgkQEnMQ0APhK1gauA/+NtuExW9V9cPDZ8AAp6x6QfoEIgqN4VEk
 pYuyP0+ZbmwH+h8z7qPqMrwxUHQnhef7gqtlWa7wj9MawbEbmqnA/3uivjX/3Aao
 bGMMXkqXppc6hgwktgLNk8vfq3LRVEH2P0i0I+Tymgxu3DCHSGRep4LWfdAS/q3z
 4pe5JXqdMx+Qnfy/bsVxJTaJAncMq1LQNAtWY1TIwK8L8RmpXrj5dvuLKUr7q+zl
 P+BfXyrdX+x05TpmHHnI/bR3w9yASL32E0S3IaQYRRqH8TsUIGHWe13Ib6hKXXG5
 j7W5KrsOgr0fQBxi+JW2fgGQkrua4o7yk4H2Ygj+Fi5RvP2uqNZdvXFAlP2cUMu/
 7Pg8+7kC6jKIrwpD03s9ZZzm0QN3jsCxFs2PEkkHMzjXbe1CI4tIkTH6ex1uvjR2
 v3OhCIp6ypxpEIJbFQucia0iQ4NF+evKjqCvRkbepqQ096jg+CNFh0VG0Tp8XR+y
 Gk9B9oXvLLPMd6ah5CI9nLJKiMWVRV8mvvqspoblGo//+39ksh4mzxm865tFXYg4
 C+DPJvKlY15Ib5eJ/xr8EZ/oS0K2sUF9sMYnK4P8QMhyTBMbpAZiljHYK+Wujt8I
 g/JCWxrEMv3LHPY9/guB5Nod/Qb4Jqqm9iE9qEX3MQxtt2O2nmmWd91pzFcUXlFU
 RDBWYJ63Okg=
 =rNhf
 -----END PGP SIGNATURE-----

Merge tag 'core-rcu-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull RCU updates from Ingo Molnar:

 - kfree_rcu updates

 - RCU tasks updates

 - Read-side scalability tests

 - SRCU updates

 - Torture-test updates

 - Documentation updates

 - Miscellaneous fixes

* tag 'core-rcu-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (109 commits)
  torture: Remove obsolete "cd $KVM"
  torture: Avoid duplicate specification of qemu command
  torture: Dump ftrace at shutdown only if requested
  torture: Add kvm-tranform.sh script for qemu-cmd files
  torture: Add more tracing crib notes to kvm.sh
  torture: Improve diagnostic for KCSAN-incapable compilers
  torture: Correctly summarize build-only runs
  torture: Pass --kmake-arg to all make invocations
  rcutorture: Check for unwatched readers
  torture: Abstract out console-log error detection
  torture: Add a stop-run capability
  torture: Create qemu-cmd in --buildonly runs
  rcu/rcutorture: Replace 0 with false
  torture: Add --allcpus argument to the kvm.sh script
  torture: Remove whitespace from identify_qemu_vcpus output
  rcutorture: NULL rcu_torture_current earlier in cleanup code
  rcutorture: Handle non-statistic bang-string error messages
  torture: Set configfile variable to current scenario
  rcutorture: Add races with task-exit processing
  locktorture: Use true and false to assign to bool variables
  ...
2020-08-03 14:31:33 -07:00
Linus Torvalds
c8e69391d0 A single commit which simplifies a debugfs attribute definition.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
 -----BEGIN PGP SIGNATURE-----
 
 iQJFBAABCgAvFiEEBpT5eoXrXCwVQwEKEnMQ0APhK1gFAl8n7w4RHG1pbmdvQGtl
 cm5lbC5vcmcACgkQEnMQ0APhK1iAlhAAv4R30jbtpMooMw/E7qTLi8MFVPNn4Pv0
 1x1c4+0biBuBEBIZB9NTf2ygUubsrz5x3KB+Hj9VuSEKucfhzoPa0FnLvPzkOpwE
 GtQ8y1IuXMARX3j1172eTzpfxr5Ru7pvZzKJVKs9UM9624teH1pk+YsmRxkDNCBU
 +knZo7UySltVK3Xy/3pbGLswo8ff9DpMnTMu48RSs/0dUKDvHJnXH2IK90nFCteb
 fDMv/numHQbccmBR0isQjTUI81yZzHWl3WaFVn87FYBQO/PwRYNH9A1cgQp0adt0
 ULMfABjdLrtz55f55S3feXZ1HXDGY5pO79xKLgB6b/jXYmU494lFsmfQHo2ypKks
 /b9vCBJ+MAsk1Df+l3rxdDJ+/8sqkyDszdM2EGo7bOea8Yy+jgKD0QfJDJ/8BBhd
 7XSrb+rfGjGOqWyuBUmzMY4o5dLFVQ6JHSfm6D45r12RvCNahVRW/uj5VwAqSD6r
 g9h4vkV1U+QJ5Aud+PQ69ghJk4CWVQubJjTXhW9ew4Tv5JKYXYlwZILnlJOtR6Fu
 oWsOQrL9c8WlLWjzGwA0yT54fBEkjbR7pKJ5Y0SMMwhR+Rvp7O9q/TK6zPSxJYi8
 L7mgClktNjHv9RohKzDpjAiWx9e375dqsYU3pZPjFCxgPKJY/Eb5xrNH6iwwQPEw
 33/JBM3tFwA=
 =vq1L
 -----END PGP SIGNATURE-----

Merge tag 'core-debugobjects-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull debugobjects cleanup from Ingo Molnar:
 "A single commit which simplifies a debugfs attribute definition"

* tag 'core-debugobjects-2020-08-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  debugobjects: Convert to DEFINE_SHOW_ATTRIBUTE
2020-08-03 14:24:18 -07:00
Linus Torvalds
382625d0d4 for-5.9/block-20200802
-----BEGIN PGP SIGNATURE-----
 
 iQJEBAABCAAuFiEEwPw5LcreJtl1+l5K99NY+ylx4KYFAl8m7YwQHGF4Ym9lQGtl
 cm5lbC5kawAKCRD301j7KXHgpt+dEAC7a0HYuX2OrkyawBnsgd1QQR/soC7surec
 yDDa7SMM8cOq3935bfzcYHV9FWJszEGIknchiGb9R3/T+vmSohbvDsM5zgwya9u/
 FHUIuTq324I6JWXKl30k4rwjiX9wQeMt+WZ5gC8KJYCWA296i2IpJwd0A45aaKuS
 x4bTjxqknE+fD4gQiMUSt+bmuOUAp81fEku3EPapCRYDPAj8f5uoY7R2arT/POwB
 b+s+AtXqzBymIqx1z0sZ/XcdZKmDuhdurGCWu7BfJFIzw5kQ2Qe3W8rUmrQ3pGut
 8a21YfilhUFiBv+B4wptfrzJuzU6Ps0BXHCnBsQjzvXwq5uFcZH495mM/4E4OJvh
 SbjL2K4iFj+O1ngFkukG/F8tdEM1zKBYy2ZEkGoWKUpyQanbAaGI6QKKJA+DCdBi
 yPEb7yRAa5KfLqMiocm1qCEO1I56HRiNHaJVMqCPOZxLmpXj19Fs71yIRplP1Trv
 GGXdWZsccjuY6OljoXWdEfnxAr5zBsO3Yf2yFT95AD+egtGsU1oOzlqAaU1mtflw
 ABo452pvh6FFpxGXqz6oK4VqY4Et7WgXOiljA4yIGoPpG/08L1Yle4eVc2EE01Jb
 +BL49xNJVeUhGFrvUjPGl9kVMeLmubPFbmgrtipW+VRg9W8+Yirw7DPP6K+gbPAR
 RzAUdZFbWw==
 =abJG
 -----END PGP SIGNATURE-----

Merge tag 'for-5.9/block-20200802' of git://git.kernel.dk/linux-block

Pull core block updates from Jens Axboe:
 "Good amount of cleanups and tech debt removals in here, and as a
  result, the diffstat shows a nice net reduction in code.

   - Softirq completion cleanups (Christoph)

   - Stop using ->queuedata (Christoph)

   - Cleanup bd claiming (Christoph)

   - Use check_events, moving away from the legacy media change
     (Christoph)

   - Use inode i_blkbits consistently (Christoph)

   - Remove old unused writeback congestion bits (Christoph)

   - Cleanup/unify submission path (Christoph)

   - Use bio_uninit consistently, instead of bio_disassociate_blkg
     (Christoph)

   - sbitmap cleared bits handling (John)

   - Request merging blktrace event addition (Jan)

   - sysfs add/remove race fixes (Luis)

   - blk-mq tag fixes/optimizations (Ming)

   - Duplicate words in comments (Randy)

   - Flush deferral cleanup (Yufen)

   - IO context locking/retry fixes (John)

   - struct_size() usage (Gustavo)

   - blk-iocost fixes (Chengming)

   - blk-cgroup IO stats fixes (Boris)

   - Various little fixes"

* tag 'for-5.9/block-20200802' of git://git.kernel.dk/linux-block: (135 commits)
  block: blk-timeout: delete duplicated word
  block: blk-mq-sched: delete duplicated word
  block: blk-mq: delete duplicated word
  block: genhd: delete duplicated words
  block: elevator: delete duplicated word and fix typos
  block: bio: delete duplicated words
  block: bfq-iosched: fix duplicated word
  iocost_monitor: start from the oldest usage index
  iocost: Fix check condition of iocg abs_vdebt
  block: Remove callback typedefs for blk_mq_ops
  block: Use non _rcu version of list functions for tag_set_list
  blk-cgroup: show global disk stats in root cgroup io.stat
  blk-cgroup: make iostat functions visible to stat printing
  block: improve discard bio alignment in __blkdev_issue_discard()
  block: change REQ_OP_ZONE_RESET and REQ_OP_ZONE_RESET_ALL to be odd numbers
  block: defer flush request no matter whether we have elevator
  block: make blk_timeout_init() static
  block: remove retry loop in ioc_release_fn()
  block: remove unnecessary ioc nested locking
  block: integrate bd_start_claiming into __blkdev_get
  ...
2020-08-03 11:57:03 -07:00
Linus Torvalds
ab5c60b79a Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto updates from Herbert Xu:
 "API:
   - Add support for allocating transforms on a specific NUMA Node
   - Introduce the flag CRYPTO_ALG_ALLOCATES_MEMORY for storage users

  Algorithms:
   - Drop PMULL based ghash on arm64
   - Fixes for building with clang on x86
   - Add sha256 helper that does the digest in one go
   - Add SP800-56A rev 3 validation checks to dh

  Drivers:
   - Permit users to specify NUMA node in hisilicon/zip
   - Add support for i.MX6 in imx-rngc
   - Add sa2ul crypto driver
   - Add BA431 hwrng driver
   - Add Ingenic JZ4780 and X1000 hwrng driver
   - Spread IRQ affinity in inside-secure and marvell/cesa"

* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (157 commits)
  crypto: sa2ul - Fix inconsistent IS_ERR and PTR_ERR
  hwrng: core - remove redundant initialization of variable ret
  crypto: x86/curve25519 - Remove unused carry variables
  crypto: ingenic - Add hardware RNG for Ingenic JZ4780 and X1000
  dt-bindings: RNG: Add Ingenic RNG bindings.
  crypto: caam/qi2 - add module alias
  crypto: caam - add more RNG hw error codes
  crypto: caam/jr - remove incorrect reference to caam_jr_register()
  crypto: caam - silence .setkey in case of bad key length
  crypto: caam/qi2 - create ahash shared descriptors only once
  crypto: caam/qi2 - fix error reporting for caam_hash_alloc
  crypto: caam - remove deadcode on 32-bit platforms
  crypto: ccp - use generic power management
  crypto: xts - Replace memcpy() invocation with simple assignment
  crypto: marvell/cesa - irq balance
  crypto: inside-secure - irq balance
  crypto: ecc - SP800-56A rev 3 local public key validation
  crypto: dh - SP800-56A rev 3 local public key validation
  crypto: dh - check validity of Z before export
  lib/mpi: Add mpi_sub_ui()
  ...
2020-08-03 10:40:14 -07:00
Ingo Molnar
992414a18c Merge branch 'locking/nmi' into locking/core, to pick up completed topic branch
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2020-08-03 13:00:27 +02:00
David S. Miller
bd0b33b248 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Resolved kernel/bpf/btf.c using instructions from merge commit
69138b34a7

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-08-02 01:02:12 -07:00
Linus Torvalds
ac3a0c8472 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from David Miller:

 1) Encap offset calculation is incorrect in esp6, from Sabrina Dubroca.

 2) Better parameter validation in pfkey_dump(), from Mark Salyzyn.

 3) Fix several clang issues on powerpc in selftests, from Tanner Love.

 4) cmsghdr_from_user_compat_to_kern() uses the wrong length, from Al
    Viro.

 5) Out of bounds access in mlx5e driver, from Raed Salem.

 6) Fix transfer buffer memleak in lan78xx, from Johan Havold.

 7) RCU fixups in rhashtable, from Herbert Xu.

 8) Fix ipv6 nexthop refcnt leak, from Xiyu Yang.

 9) vxlan FDB dump must be done under RCU, from Ido Schimmel.

10) Fix use after free in mlxsw, from Ido Schimmel.

11) Fix map leak in HASH_OF_MAPS bpf code, from Andrii Nakryiko.

12) Fix bug in mac80211 Tx ack status reporting, from Vasanthakumar
    Thiagarajan.

13) Fix memory leaks in IPV6_ADDRFORM code, from Cong Wang.

14) Fix bpf program reference count leaks in mlx5 during
    mlx5e_alloc_rq(), from Xin Xiong.

* git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (86 commits)
  vxlan: fix memleak of fdb
  rds: Prevent kernel-infoleak in rds_notify_queue_get()
  net/sched: The error lable position is corrected in ct_init_module
  net/mlx5e: fix bpf_prog reference count leaks in mlx5e_alloc_rq
  net/mlx5e: E-Switch, Specify flow_source for rule with no in_port
  net/mlx5e: E-Switch, Add misc bit when misc fields changed for mirroring
  net/mlx5e: CT: Support restore ipv6 tunnel
  net: gemini: Fix missing clk_disable_unprepare() in error path of gemini_ethernet_port_probe()
  ionic: unlock queue mutex in error path
  atm: fix atm_dev refcnt leaks in atmtcp_remove_persistent
  net: ethernet: mtk_eth_soc: fix MTU warnings
  net: nixge: fix potential memory leak in nixge_probe()
  devlink: ignore -EOPNOTSUPP errors on dumpit
  rxrpc: Fix race between recvmsg and sendmsg on immediate call failure
  MAINTAINERS: Replace Thor Thayer as Altera Triple Speed Ethernet maintainer
  selftests/bpf: fix netdevsim trap_flow_action_cookie read
  ipv6: fix memory leaks on IPV6_ADDRFORM path
  net/bpfilter: Initialize pos in __bpfilter_process_sockopt
  igb: reinit_locked() should be called with rtnl_lock
  e1000e: continue to init PHY even when failed to disable ULP
  ...
2020-08-01 16:47:24 -07:00
Ingo Molnar
63722bbca6 Merge branch 'kcsan' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into locking/core
Pull v5.9 KCSAN bits from Paul E. McKenney.

Perhaps the most important change is that GCC 11 now has all fixes in place
to support KCSAN, so GCC support can be enabled again.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2020-08-01 09:26:27 +02:00
Andy Shevchenko
30d497a0e1 lib/vsprintf: Force type of flags value for gfp_t
Sparse is not happy about restricted type being assigned:
  lib/vsprintf.c:1940:23: warning: incorrect type in assignment (different base types)
  lib/vsprintf.c:1940:23:    expected unsigned long [assigned] flags
  lib/vsprintf.c:1940:23:    got restricted gfp_t [usertype]

Force type of flags value to make sparse happy.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Link: https://lore.kernel.org/r/20200731180825.30575-3-andriy.shevchenko@linux.intel.com
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
2020-08-01 12:52:57 +09:00
Andy Shevchenko
09ceb8d76e lib/vsprintf: Replace custom spec to print decimals with generic one
When printing phandle via %pOFp the custom spec is used. First of all,
it has a SMALL flag which makes no sense for decimal numbers. Second,
we have already default spec for decimal numbers. Use the latter in
the %pOFp case as well.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Cc: Pantelis Antoniou <pantelis.antoniou@konsulko.com>
Cc: Rob Herring <robh@kernel.org>
Cc: Joe Perches <joe@perches.com>
Cc: Grant Likely <grant.likely@arm.com>
Link: https://lore.kernel.org/r/20200731180825.30575-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
2020-08-01 12:52:36 +09:00
Andy Shevchenko
b886690d1b lib/vsprintf: Replace hidden BUILD_BUG_ON() with static_assert()
First of all, there is no compile time check for the SMALL
to be ' ' (0x20, i.e. space). Second, for ZEROPAD the check
is hidden in the code.

For better maintenance replace BUILD_BUG_ON() with static_assert()
for ZEROPAD and move it closer to the definition. While at it,
introduce check for SMALL.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Reviewed-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Link: https://lore.kernel.org/r/20200731180825.30575-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
2020-08-01 12:52:32 +09:00
Ingo Molnar
28cff52eae Merge branch 'linus' into locking/core, to resolve conflict
Conflicts:
	arch/arm/include/asm/percpu.h

As Stephen Rothwell noted, there's a conflict between this commit
in locking/core:

  a21ee6055c ("lockdep: Change hardirq{s_enabled,_context} to per-cpu variables")

and this fresh upstream commit:

  aa54ea903a ("ARM: percpu.h: fix build error")

a21ee6055c is a simpler solution to the dependency problem and doesn't
further increase header hell - so this conflict resolution effectively
reverts aa54ea903a and uses the a21ee6055c solution.

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2020-07-31 12:16:09 +02:00
Nick Terrell
4963bb2b89 lib: Add zstd support to decompress
- Add unzstd() and the zstd decompress interface.

- Add zstd support to decompress_method().

The decompress_method() and unzstd() functions are used to decompress
the initramfs and the initrd. The __decompress() function is used in
the preboot environment to decompress a zstd compressed kernel.

The zstd decompression function allows the input and output buffers to
overlap because that is used by x86 kernel decompression.

Signed-off-by: Nick Terrell <terrelln@fb.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20200730190841.2071656-3-nickrterrell@gmail.com
2020-07-31 11:49:08 +02:00
Nick Terrell
6d25a633ea lib: Prepare zstd for preboot environment, improve performance
These changes are necessary to get the build to work in the preboot
environment, and to get reasonable performance:

- Remove a double definition of the CHECK_F macro when the zstd
  library is amalgamated.

- Switch ZSTD_copy8() to __builtin_memcpy(), because in the preboot
  environment on x86 gcc can't inline `memcpy()` otherwise.

- Limit the gcc hack in ZSTD_wildcopy() to the broken gcc version. See
  https://gcc.gnu.org/bugzilla/show_bug.cgi?id=81388.

ZSTD_copy8() and ZSTD_wildcopy() are in the core of the zstd hot loop.
So outlining these calls to memcpy(), and having an extra branch are very
detrimental to performance.

Signed-off-by: Nick Terrell <terrelln@fb.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20200730190841.2071656-2-nickrterrell@gmail.com
2020-07-31 11:49:07 +02:00
Marcelo Henrique Cerri
4278e9d99e lib/mpi: Add mpi_sub_ui()
Add mpi_sub_ui() based on Gnu MP mpz_sub_ui() function from file
mpz/aors_ui.h[1] from change id 510b83519d1c adapting the code to the
kernel's data structures, helper functions and coding style and also
removing the defines used to produce mpz_sub_ui() and mpz_add_ui()
from the same code.

[1] https://gmplib.org/repo/gmp-6.2/file/510b83519d1c/mpz/aors.h

Signed-off-by: Marcelo Henrique Cerri <marcelo.cerri@canonical.com>
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-07-31 18:08:59 +10:00
Ingo Molnar
c1cc4784ce Merge branch 'for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu into core/rcu
Pull the v5.9 RCU bits from Paul E. McKenney:

 - Documentation updates
 - Miscellaneous fixes
 - kfree_rcu updates
 - RCU tasks updates
 - Read-side scalability tests
 - SRCU updates
 - Torture-test updates

Signed-off-by: Ingo Molnar <mingo@kernel.org>
2020-07-31 00:15:53 +02:00
Linus Torvalds
83bdc7275e random32: remove net_rand_state from the latent entropy gcc plugin
It turns out that the plugin right now ends up being really unhappy
about the change from 'static' to 'extern' storage that happened in
commit f227e3ec3b ("random32: update the net random state on interrupt
and activity").

This is probably a trivial fix for the latent_entropy plugin, but for
now, just remove net_rand_state from the list of things the plugin
worries about.

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Emese Revfy <re.emese@gmail.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Willy Tarreau <w@1wt.eu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-07-29 19:11:00 -07:00
Willy Tarreau
f227e3ec3b random32: update the net random state on interrupt and activity
This modifies the first 32 bits out of the 128 bits of a random CPU's
net_rand_state on interrupt or CPU activity to complicate remote
observations that could lead to guessing the network RNG's internal
state.

Note that depending on some network devices' interrupt rate moderation
or binding, this re-seeding might happen on every packet or even almost
never.

In addition, with NOHZ some CPUs might not even get timer interrupts,
leaving their local state rarely updated, while they are running
networked processes making use of the random state.  For this reason, we
also perform this update in update_process_times() in order to at least
update the state when there is user or system activity, since it's the
only case we care about.

Reported-by: Amit Klein <aksecurity@gmail.com>
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Eric Dumazet <edumazet@google.com>
Cc: "Jason A. Donenfeld" <Jason@zx2c4.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Kees Cook <keescook@chromium.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Willy Tarreau <w@1wt.eu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2020-07-29 10:35:37 -07:00
Ahmed S. Darwish
8fd8ad5c5d lockdep: Add preemption enabled/disabled assertion APIs
Asserting that preemption is enabled or disabled is a critical sanity
check.  Developers are usually reluctant to add such a check in a
fastpath as reading the preemption count can be costly.

Extend the lockdep API with macros asserting that preemption is disabled
or enabled. If lockdep is disabled, or if the underlying architecture
does not support kernel preemption, this assert has no runtime overhead.

References: f54bb2ec02 ("locking/lockdep: Add IRQs disabled/enabled assertion APIs: ...")
Signed-off-by: Ahmed S. Darwish <a.darwish@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20200720155530.1173732-8-a.darwish@linutronix.de
2020-07-29 16:14:24 +02:00
Herbert Xu
ce9b362bf6 rhashtable: Restore RCU marking on rhash_lock_head
This patch restores the RCU marking on bucket_table->buckets as
it really does need RCU protection.  Its removal had led to a fatal
bug.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-28 17:09:49 -07:00
Jacob Keller
b8265621f4 Add pldmfw library for PLDM firmware update
The pldmfw library is used to implement common logic needed to flash
devices based on firmware files using the format described by the PLDM
for Firmware Update standard.

This library consists of logic to parse the PLDM file format from
a firmware file object, as well as common logic for sending the relevant
PLDM header data to the device firmware.

A simple ops table is provided so that device drivers can implement
device specific hardware interactions while keeping the common logic to
the pldmfw library.

This library will be used by the Intel ice networking driver as part of
implementing device flash update via devlink. The library aims to be
vendor and device agnostic. For this reason, it has been placed in
lib/pldmfw, in the hopes that other devices which use the PLDM firmware
file format may benefit from it in the future. However, do note that not
all features defined in the PLDM standard have been implemented.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-28 17:07:06 -07:00
Ralph Campbell
7d17e83abe mm/hmm/test: use the new migration invalidation
Use the new MMU_NOTIFY_MIGRATE event to skip MMU invalidations of device
private memory and handle the invalidation in the driver as part of
migrating device private memory.

Link: https://lore.kernel.org/r/20200723223004.9586-6-rcampbell@nvidia.com
Signed-off-by: Ralph Campbell <rcampbell@nvidia.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2020-07-28 16:20:33 -03:00
Ralph Campbell
5143192cd4 mm/migrate: add a flags parameter to migrate_vma
The src_owner field in struct migrate_vma is being used for two purposes,
it acts as a selection filter for which types of pages are to be migrated
and it identifies device private pages owned by the caller.

Split this into separate parameters so the src_owner field can be used
just to identify device private pages owned by the caller of
migrate_vma_setup().

Rename the src_owner field to pgmap_owner to reflect it is now used only
to identify which device private pages to migrate.

Link: https://lore.kernel.org/r/20200723223004.9586-3-rcampbell@nvidia.com
Signed-off-by: Ralph Campbell <rcampbell@nvidia.com>
Reviewed-by: Bharata B Rao <bharata@linux.ibm.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
2020-07-28 16:20:33 -03:00
peterz@infradead.org
ed00495333 locking/lockdep: Fix TRACE_IRQFLAGS vs. NMIs
Prior to commit:

  859d069ee1 ("lockdep: Prepare for NMI IRQ state tracking")

IRQ state tracking was disabled in NMIs due to nmi_enter()
doing lockdep_off() -- with the obvious requirement that NMI entry
call nmi_enter() before trace_hardirqs_off().

[ AFAICT, PowerPC and SH violate this order on their NMI entry ]

However, that commit explicitly changed lockdep_hardirqs_*() to ignore
lockdep_off() and breaks every architecture that has irq-tracing in
it's NMI entry that hasn't been fixed up (x86 being the only fixed one
at this point).

The reason for this change is that by ignoring lockdep_off() we can:

  - get rid of 'current->lockdep_recursion' in lockdep_assert_irqs*()
    which was going to to give header-recursion issues with the
    seqlock rework.

  - allow these lockdep_assert_*() macros to function in NMI context.

Restore the previous state of things and allow an architecture to
opt-in to the NMI IRQ tracking support, however instead of relying on
lockdep_off(), rely on in_nmi(), both are part of nmi_enter() and so
over-all entry ordering doesn't need to change.

Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20200727124852.GK119549@hirez.programming.kicks-ass.net
2020-07-27 15:13:29 +02:00
Greg Kroah-Hartman
280c7f95f8 Revert "test_firmware: Test platform fw loading on non-EFI systems"
This reverts commit 2d38dbf89a as it broke
the build in linux-next

Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Fixes: 2d38dbf89a ("test_firmware: Test platform fw loading on non-EFI systems")
Cc: stable@vger.kernel.org
Cc: Scott Branden <scott.branden@broadcom.com>
Cc: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20200727165539.0e8797ab@canb.auug.org.au
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-27 12:14:28 +02:00
David S. Miller
a57066b1a0 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
The UDP reuseport conflict was a little bit tricky.

The net-next code, via bpf-next, extracted the reuseport handling
into a helper so that the BPF sk lookup code could invoke it.

At the same time, the logic for reuseport handling of unconnected
sockets changed via commit efc6b6f6c3
which changed the logic to carry on the reuseport result into the
rest of the lookup loop if we do not return immediately.

This requires moving the reuseport_has_conns() logic into the callers.

While we are here, get rid of inline directives as they do not belong
in foo.c files.

The other changes were cases of more straightforward overlapping
modifications.

Signed-off-by: David S. Miller <davem@davemloft.net>
2020-07-25 17:49:04 -07:00
Kees Cook
2d38dbf89a test_firmware: Test platform fw loading on non-EFI systems
On non-EFI systems, it wasn't possible to test the platform firmware
loader because it will have never set "checked_fw" during __init.
Instead, allow the test code to override this check. Additionally split
the declarations into a private header file so it there is greater
enforcement of the symbol visibility.

Fixes: 548193cba2 ("test_firmware: add support for firmware_request_platform")
Cc: stable@vger.kernel.org
Acked-by: Scott Branden <scott.branden@broadcom.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20200724213640.389191-2-keescook@chromium.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-25 12:05:20 +02:00
Jim Cromie
4c0d77828d dyndbg: export ddebug_exec_queries
Export ddebug_exec_queries() for use by modules.

This will allow module authors to control all their *pr_debug*s
dynamically.  And since ddebug_exec_queries() is what implements
"echo $query >control", it gives the same per-callsite control.

Virtues of this:
- simplicity. just an export.
- full control over any/all subsets of callsites.
- same "query/command-string" in code and console
- full callsite selectivity with module file line format

Format in particular deserves special attention; it is where
low-hanging fruit will be found.

Consider: drivers/gpu/drm/amd/display/include/logger_types.h:

  #define DC_LOG_SURFACE(...)          pr_debug("[SURFACE]:"__VA_ARGS__)
  #define DC_LOG_HW_LINK_TRAINING(...) pr_debug("[HW_LINK_TRAINING]:"__VA_ARGS__)
  .. 9 more ..

Thats 11 string prefixes, used in 804 places in drivers/gpu/**
Clearly this is a systematized classification of those callsites.
And one I'd expect to see repeated often.

Using ddebug_exec_queries(), authors can select on those prefixes
as a unitary set, equivalent to:

    echo "module=MODULE_NAME format=^[SURFACE]: +p" >control

Trivially, those sets can be subsected with the other query terms too,
say file=foo, should the author see fit.

Perhaps as important, users can modify the set of enabled callsites,
presumably to aid debugging by enabling helpful debug callsites, and
disabling those that just clutter the info.

Authors could even alter [fmlt] flags, though I dont see a good reason
why they would.  Perhaps harnessed by bug-logging automation to get
fuller, or more minimal bug-reports.

DRM

drm has both drm.debug, which defines 32 categories of drm_printk
logging, and entirely separate uses of pr_debug, which are dynamic on
this i915 laptop, running mainline.  So I can observe and report on
both.

The i915 driver has 118 dyndbg callsites, with following
"classifications" defined in drivers/gpu/drm/i915/gvt/**

$ grep 915 /proc/dynamic_debug/control | cut -d= -f2 | cut -d: -f1,2 | sort -u
_ "gvt: cmd
_ "gvt: core
_ "gvt: dpy
_ "gvt: el
_ "gvt: irq
_ "gvt: mm
_ "gvt: mmio
_ "gvt: render
_ "gvt: sched
_ "%s for root hub!\012"
_ "Vendor defined info completion code %u\012"

This classification is entirely out-of-band for control by drm.debug,
and is only available to root user at the console.  But module authors
can activate them with ddebug_exec_queries(sprintf("format=^%s +p")),
and then decide how to expose the groups to the user for max utility.

drm.debug

drm.debug has 32 bit-flags, and matching enum drm_debug_category
values to classify the ~2943 DRM_DEBUG*() callsites in drivers/gpu

The drm.debug callback could invoke ddebug_exec_queries() with 32
different hardcoded query strings, needing only (bit) ? " +p" : " -p"
added.

I briefly enabled drm.debug=0xff on my i915 laptop, which yielded
these unique prefixes: (dmesg | cut -c17- | cut -d\] -f1 | sort -u)

[drm:drm_atomic_check_only [drm
[drm:drm_atomic_get_crtc_state [drm
[drm:drm_atomic_get_plane_state [drm
[drm:drm_atomic_nonblocking_commit [drm
[drm:drm_atomic_set_fb_for_plane [drm
[drm:drm_atomic_state_default_clear [drm
[drm:__drm_atomic_state_free [drm
[drm:drm_atomic_state_init [drm
[drm:drm_crtc_vblank_helper_get_vblank_timestamp_internal [drm
[drm:drm_handle_vblank [drm
[drm:drm_ioctl [drm
[drm:drm_mode_addfb2 [drm
[drm:drm_mode_object_get [drm
[drm:drm_mode_object_put.part.0 [drm
[drm:drm_update_vblank_count [drm
[drm:drm_vblank_enable [drm
[drm:drm_vblank_restore [drm
[drm:vblank_disable_fn [drm
i915 0000:00:02.0: [drm:gen9_set_dc_state [i915
i915 0000:00:02.0: [drm:intel_atomic_get_global_obj_state [i915
i915 0000:00:02.0: [drm:__intel_display_power_get_domain.part.0 [i915
i915 0000:00:02.0: [drm:__intel_display_power_put_domain [i915
i915 0000:00:02.0: [drm:intel_plane_atomic_calc_changes [i915
i915 0000:00:02.0: [drm:skl_enable_dc6 [i915

Several good format=^prefixes are apparent there, and some misses.

 ^[drm:drm_atomic_	# misses: [drm:__drm_atomic_state_free [drm
 ^[drm:drm_ioctl
 ^[drm:drm_mode
 ^[drm:drm_vblank_	# misses: [drm:drm_update_vblank_count & [drm:vblank_disable_fn

Its not a perfect 1:1 single format-match per class, but the misses
above can be covered with 1 & 2 additional queries, which can be
concatenated together with ";" separators and submitted with 1 call.

Benefits:

For drm, adapting DRM_DEBUG to use dynamic-debug inside could
replicate (and thereby obsolete) lots of bit-checking in current
DRM_DEBUG callsites, at least with JUMP_LABEL optimized code.
ddebug_exec_queries() and a handful of fixed query-strings can select
and thereby control the already classified callsites.

With the classes mapped to queries, the enum type and parameter can be
eliminated (folded away with macro magic), at least for DYNAMIC_DEBUG
& JUMP_LABEL builds.

Is it safe ?

ddebug_exec_queries() is currently exposed to user space in
several limited ways;

1 it is called from module-load callback, where it implements the
  $modname.dyndbg=+p "fake" parameter provided to all modules.

2 it handles query input via >control directly

IOW, it is "fully" exposed to local root user; exposing the same
functionality to other kernel modules is no additional risk.

The other standard issue to check is locking:

dyndbg has a single mutex, taken by ddebug_change to handle >control,
and by ddebug_proc_(start|stop) to span `cat control`.  Queries
submitted via export will typically have module specified, which
dramatically cuts the scan by ddebug_change vs "module=* +p".
ISTM this proposed export presents no locking problems.

TLDR;

It would be interesting to see how drm.dyndbg=$QUERY and
drm.debug=$HEXY would interact; it might be order dependent, as
if given as modprobe args or in /etc/modprobe.d/

Acked-by: <jbaron@akamai.com>
Signed-off-by: Jim Cromie <jim.cromie@gmail.com>
Link: https://lore.kernel.org/r/20200719231058.1586423-19-jim.cromie@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-24 17:00:10 +02:00