Pull perf fixes from Thomas Gleixner:
"A set of fixes for perf:
Kernel side:
- Fix the hardcoded index of extra PCI devices on Broadwell which
caused a resource conflict and triggered warnings on CPU hotplug.
Tooling:
- Update the tools copy of several files, including perf_event.h,
powerpc's asm/unistd.h (new io_pgetevents syscall), bpf.h and x86's
memcpy_64.s (used in 'perf bench mem'), silencing the respective
warnings during the perf tools build.
- Fix the build on the alpine:edge distro"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86/intel/uncore: Fix hardcoded index of Broadwell extra PCI devices
perf tools: Fix the build on the alpine:edge distro
tools arch: Update arch/x86/lib/memcpy_64.S copy used in 'perf bench mem memcpy'
tools headers uapi: Refresh linux/bpf.h copy
tools headers powerpc: Update asm/unistd.h copy to pick new
tools headers uapi: Update tools's copy of linux/perf_event.h
Pull irq fix from Thomas Gleixner:
"A single bugfix for the irq core to prevent silent data corruption and
malfunction of threaded interrupts under certain conditions"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
genirq: Make force irq threading setup more robust
Pull networking fixes from David Miller:
1) Handle frames in error situations properly in AF_XDP, from Jakub
Kicinski.
2) tcp_mmap test case only tests ipv6 due to a thinko, fix from
Maninder Singh.
3) Session refcnt fix in l2tp_ppp, from Guillaume Nault.
4) Fix regression in netlink bind handling of multicast gruops, from
Dmitry Safonov.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
netlink: Don't shift on 64 for ngroups
net/smc: no cursor update send in state SMC_INIT
l2tp: fix missing refcount drop in pppol2tp_tunnel_ioctl()
mlxsw: core_acl_flex_actions: Remove redundant mirror resource destruction
mlxsw: core_acl_flex_actions: Remove redundant counter destruction
mlxsw: core_acl_flex_actions: Remove redundant resource destruction
mlxsw: core_acl_flex_actions: Return error for conflicting actions
selftests/bpf: update test_lwt_seg6local.sh according to iproute2
drivers: net: lmc: fix case value for target abort error
selftest/net: fix protocol family to work for IPv4.
net: xsk: don't return frames via the allocator on error
tools/bpftool: fix a percpu_array map dump problem
"overflow" inline inode data.
-----BEGIN PGP SIGNATURE-----
Comment: Kees Cook <kees@outflux.net>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=pwq8
-----END PGP SIGNATURE-----
Merge tag 'usercopy-fix-v4.18-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux
Pull usercopy whitelisting fix from Kees Cook:
"Bart Massey discovered that the usercopy whitelist for JFS was
incomplete: the inline inode data may intentionally "overflow" into
the neighboring "extended area", so the size of the whitelist needed
to be raised to include the neighboring field"
* tag 'usercopy-fix-v4.18-rc8' of git://git.kernel.org/pub/scm/linux/kernel/git/kees/linux:
jfs: Fix usercopy whitelist for inline inode data
- Fix incorrect shifting in the iomap bmap functions.
-----BEGIN PGP SIGNATURE-----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=3omy
-----END PGP SIGNATURE-----
Merge tag 'xfs-4.18-fixes-5' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs bugfix from Darrick Wong:
"One more patch for 4.18 to fix a coding error in the iomap_bmap()
function introduced in -rc1: fix incorrect shifting"
* tag 'xfs-4.18-fixes-5' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
fs: fix iomap_bmap position calculation
It turns out that commit 721c7fc701 ("block: fail op_is_write()
requests to read-only partitions"), while obviously correct, causes
problems for some older lvm2 installations.
The reason is that the lvm snapshotting will continue to write to the
snapshow COW volume, even after the volume has been marked read-only.
End result: snapshot failure.
This has actually been fixed in newer version of the lvm2 tool, but the
old tools still exist, and the breakage was reported both in the kernel
bugzilla and in the Debian bugzilla:
https://bugzilla.kernel.org/show_bug.cgi?id=200439https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=900442
The lvm2 fix is here
https://sourceware.org/git/?p=lvm2.git;a=commit;h=a6fdb9d9d70f51c49ad11a87ab4243344e6701a3
but until everybody has updated to recent versions, we'll have to weaken
the "never write to read-only partitions" check. It now allows the
write to happen, but causes a warning, something like this:
generic_make_request: Trying to write to read-only block-device dm-3 (partno X)
Modules linked in: nf_tables xt_cgroup xt_owner kvm_intel iwlmvm kvm irqbypass iwlwifi
CPU: 1 PID: 77 Comm: kworker/1:1 Not tainted 4.17.9-gentoo #3
Hardware name: LENOVO 20B6A019RT/20B6A019RT, BIOS GJET91WW (2.41 ) 09/21/2016
Workqueue: ksnaphd do_metadata
RIP: 0010:generic_make_request_checks+0x4ac/0x600
...
Call Trace:
generic_make_request+0x64/0x400
submit_bio+0x6c/0x140
dispatch_io+0x287/0x430
sync_io+0xc3/0x120
dm_io+0x1f8/0x220
do_metadata+0x1d/0x30
process_one_work+0x1b9/0x3e0
worker_thread+0x2b/0x3c0
kthread+0x113/0x130
ret_from_fork+0x35/0x40
Note that this is a "revert" in behavior only. I'm leaving alone the
actual code cleanups in commit 721c7fc701, but letting the previously
uncaught request go through with a warning instead of stopping it.
Fixes: 721c7fc701 ("block: fail op_is_write() requests to read-only partitions")
Reported-and-tested-by: WGH <wgh@torlan.ru>
Acked-by: Mike Snitzer <snitzer@redhat.com>
Cc: Sagi Grimberg <sagi@grimberg.me>
Cc: Ilya Dryomov <idryomov@gmail.com>
Cc: Jens Axboe <axboe@kernel.dk>
Cc: Zdenek Kabelac <zkabelac@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
It's legal to have 64 groups for netlink_sock.
As user-supplied nladdr->nl_groups is __u32, it's possible to subscribe
only to first 32 groups.
The check for correctness of .bind() userspace supplied parameter
is done by applying mask made from ngroups shift. Which broke Android
as they have 64 groups and the shift for mask resulted in an overflow.
Fixes: 61f4b23769 ("netlink: Don't shift with UB on nlk->ngroups")
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Steffen Klassert <steffen.klassert@secunet.com>
Cc: netdev@vger.kernel.org
Cc: stable@vger.kernel.org
Reported-and-Tested-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Dmitry Safonov <dima@arista.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann says:
====================
pull-request: bpf 2018-08-05
The following pull-request contains BPF updates for your *net* tree.
The main changes are:
1) Fix bpftool percpu_array dump by using correct roundup to next
multiple of 8 for the value size, from Yonghong.
2) Fix in AF_XDP's __xsk_rcv_zc() to not returning frames back to
allocator since driver will recycle frame anyway in case of an
error, from Jakub.
3) Fix up BPF test_lwt_seg6local test cases to final iproute2
syntax, from Mathieu.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
If a writer blocked condition is received without data, the current
consumer cursor is immediately sent. Servers could already receive this
condition in state SMC_INIT without finished tx-setup. This patch
avoids sending a consumer cursor update in this case.
Signed-off-by: Ursula Braun <ubraun@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Bart Massey reported what turned out to be a usercopy whitelist false
positive in JFS when symlink contents exceeded 128 bytes. The inline
inode data (i_inline) is actually designed to overflow into the "extended
area" following it (i_inline_ea) when needed. So the whitelist needed to
be expanded to include both i_inline and i_inline_ea (the whole size
of which is calculated internally using IDATASIZE, 256, instead of
sizeof(i_inline), 128).
$ cd /mnt/jfs
$ touch $(perl -e 'print "B" x 250')
$ ln -s B* b
$ ls -l >/dev/null
[ 249.436410] Bad or missing usercopy whitelist? Kernel memory exposure attempt detected from SLUB object 'jfs_ip' (offset 616, size 250)!
Reported-by: Bart Massey <bart.massey@gmail.com>
Fixes: 8d2704d382 ("jfs: Define usercopy region in jfs_ip slab cache")
Cc: Dave Kleikamp <shaggy@kernel.org>
Cc: jfs-discussion@lists.sourceforge.net
Cc: stable@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
If 'session' is not NULL and is not a PPP pseudo-wire, then we fail to
drop the reference taken by l2tp_session_get().
Fixes: ecd012e45a ("l2tp: filter out non-PPP sessions in pppol2tp_tunnel_ioctl()")
Signed-off-by: Guillaume Nault <g.nault@alphalink.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ido Schimmel says:
====================
mlxsw: Fix ACL actions error condition handling
Nir says:
Two issues were lately noticed within mlxsw ACL actions error condition
handling. The first patch deals with conflicting actions such as:
# tc filter add dev swp49 parent ffff: \
protocol ip pref 10 flower skip_sw dst_ip 192.168.101.1 \
action goto chain 100 \
action mirred egress redirect dev swp4
The second action will never execute, however SW model allows this
configuration, while the mlxsw driver cannot allow for it as it
implements actions in sets of up to three actions per set with a single
termination marking. Conflicting actions create a contradiction over
this single marking and thus cannot be configured. The fix replaces a
misplaced warning with an error code to be returned.
Patches 2-4 fix a condition of duplicate destruction of resources. Some
actions require allocation of specific resource prior to setting the
action itself. On error condition this resource was destroyed twice,
leading to a crash when using mirror action, and to a redundant
destruction in other cases, since for error condition rule destruction
also takes care of resource destruction. In order to fix this state a
symmetry in behavior is added and resource destruction also takes care
of removing the resource from rule's resource list.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
In previous patch mlxsw_afa_resource_del() was added to avoid a duplicate
resource detruction scenario.
For mirror actions, such duplicate destruction leads to a crash as in:
# tc qdisc add dev swp49 ingress
# tc filter add dev swp49 parent ffff: \
protocol ip chain 100 pref 10 \
flower skip_sw dst_ip 192.168.101.1 action drop
# tc filter add dev swp49 parent ffff: \
protocol ip pref 10 \
flower skip_sw dst_ip 192.168.101.1 action goto chain 100 \
action mirred egress mirror dev swp4
Therefore add a call to mlxsw_afa_resource_del() in
mlxsw_afa_mirror_destroy() in order to clear that resource
from rule's resources.
Fixes: d0d13c1858 ("mlxsw: spectrum_acl: Add support for mirror action")
Signed-off-by: Nir Dotan <nird@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Each tc flower rule uses a hidden count action. As counter resource may
not be available due to limited HW resources, update _counter_create()
and _counter_destroy() pair to follow previously introduced symmetric
error condition handling, add a call to mlxsw_afa_resource_del() as part
of the counter resource destruction.
Fixes: c18c1e186b ("mlxsw: core: Make counter index allocated inside the action append")
Signed-off-by: Nir Dotan <nird@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Some ACL actions require the allocation of a separate resource
prior to applying the action itself. When facing an error condition
during the setup phase of the action, resource should be destroyed.
For such actions the destruction was done twice which is dangerous
and lead to a potential crash.
The destruction took place first upon error on action setup phase
and then as the rule was destroyed.
The following sequence generated a crash:
# tc qdisc add dev swp49 ingress
# tc filter add dev swp49 parent ffff: \
protocol ip chain 100 pref 10 \
flower skip_sw dst_ip 192.168.101.1 action drop
# tc filter add dev swp49 parent ffff: \
protocol ip pref 10 \
flower skip_sw dst_ip 192.168.101.1 action goto chain 100 \
action mirred egress mirror dev swp4
Therefore add mlxsw_afa_resource_del() as a complement of
mlxsw_afa_resource_add() to add symmetry to resource_list membership
handling. Call this from mlxsw_afa_fwd_entry_ref_destroy() to make the
_fwd_entry_ref_create() and _fwd_entry_ref_destroy() pair of calls a
NOP.
Fixes: 140ce42121 ("mlxsw: core: Convert fwd_entry_ref list to be generic per-block resource list")
Signed-off-by: Nir Dotan <nird@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Spectrum switch ACL action set is built in groups of three actions
which may point to additional actions. A group holds a single record
which can be set as goto record for pointing at a following group
or can be set to mark the termination of the lookup. This is perfectly
adequate for handling a series of actions to be executed on a packet.
While the SW model allows configuration of conflicting actions
where it is clear that some actions will never execute, the mlxsw
driver must block such configurations as it creates a conflict
over the single terminate/goto record value.
For a conflicting actions configuration such as:
# tc filter add dev swp49 parent ffff: \
protocol ip pref 10 \
flower skip_sw dst_ip 192.168.101.1 \
action goto chain 100 \
action mirred egress mirror dev swp4
Where it is clear that the last action will never execute, the
mlxsw driver was issuing a warning instead of returning an error.
Therefore replace that warning with an error for this specific
case.
Fixes: 4cda7d8d70 ("mlxsw: core: Introduce flexible actions support")
Signed-off-by: Nir Dotan <nird@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
- Refuse invalid port numbers in the modify_qp system call
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2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=8q1F
-----END PGP SIGNATURE-----
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma
Pull rdma fix from Jason Gunthorpe:
"One bug for missing user input validation: refuse invalid port numbers
in the modify_qp system call"
* tag 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rdma/rdma:
RDMA/uverbs: Expand primary and alt AV port checks
-----BEGIN PGP SIGNATURE-----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=Ml3z
-----END PGP SIGNATURE-----
Merge tag 'for-linus-20180803' of git://git.kernel.dk/linux-block
Pull block fix from Jens Axboe:
"Just a single fix, from Ming, fixing a regression in this cycle where
the busy tag iteration was changed to only calling the callback
function for requests that are started. We really want all non-free
requests.
This fixes a boot regression on certain VM setups"
* tag 'for-linus-20180803' of git://git.kernel.dk/linux-block:
blk-mq: fix blk_mq_tagset_busy_iter
One fix for a regression in a recent TLB flush optimisation, which caused us to
incorrectly not send TLB invalidations to coprocessors.
Thanks to:
Frederic Barrat, Nicholas Piggin, Vaibhav Jain.
-----BEGIN PGP SIGNATURE-----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=Z81h
-----END PGP SIGNATURE-----
Merge tag 'powerpc-4.18-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"One fix for a regression in a recent TLB flush optimisation, which
caused us to incorrectly not send TLB invalidations to coprocessors.
Thanks to Frederic Barrat, Nicholas Piggin, Vaibhav Jain"
* tag 'powerpc-4.18-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/64s/radix: Fix missing global invalidations when removing copro
-----BEGIN PGP SIGNATURE-----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=rjIZ
-----END PGP SIGNATURE-----
Merge tag 'drm-fixes-2018-08-03' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"Nothing too major at this late stage:
- adv7511: reset fix
- vc4: scaling fix
- two atomic core fixes
- one legacy core error handling fix
I had a bunch of driver fixes from hdlcd but I think I'll leave them
for -next at this point"
* tag 'drm-fixes-2018-08-03' of git://anongit.freedesktop.org/drm/drm:
drm/vc4: Reset ->{x, y}_scaling[1] when dealing with uniplanar formats
drm/atomic: Initialize variables in drm_atomic_helper_async_check() to make gcc happy
drm/atomic: Check old_plane_state->crtc in drm_atomic_helper_async_check()
drm: re-enable error handling
drm/bridge: adv7511: Reset registers on hotplug
Pull crypto fix from Herbert Xu:
"Fix a memory corruption in the padlock-aes driver"
* 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
crypto: padlock-aes - Fix Nano workaround data corruption
The support of force threading interrupts which are set up with both a
primary and a threaded handler wreckaged the setup of regular requested
threaded interrupts (primary handler == NULL).
The reason is that it does not check whether the primary handler is set to
the default handler which wakes the handler thread. Instead it replaces the
thread handler with the primary handler as it would do with force threaded
interrupts which have been requested via request_irq(). So both the primary
and the thread handler become the same which then triggers the warnon that
the thread handler tries to wakeup a not configured secondary thread.
Fortunately this only happens when the driver omits the IRQF_ONESHOT flag
when requesting the threaded interrupt, which is normaly caught by the
sanity checks when force irq threading is disabled.
Fix it by skipping the force threading setup when a regular threaded
interrupt is requested. As a consequence the interrupt request which lacks
the IRQ_ONESHOT flag is rejected correctly instead of silently wreckaging
it.
Fixes: 2a1d3ab898 ("genirq: Handle force threading of irqs with primary and thread handler")
Reported-by: Kurt Kanzenbach <kurt.kanzenbach@linutronix.de>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Kurt Kanzenbach <kurt.kanzenbach@linutronix.de>
Cc: stable@vger.kernel.org
The shell file for test_lwt_seg6local contains an early iproute2 syntax
for installing a seg6local End.BPF route. iproute2 support for this
feature has recently been upstreamed, but with an additional keyword
required. This patch updates test_lwt_seg6local.sh to the definitive
iproute2 syntax
Signed-off-by: Mathieu Xhonneux <m.xhonneux@gmail.com>
Acked-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
-----BEGIN PGP SIGNATURE-----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=TwSI
-----END PGP SIGNATURE-----
Merge tag 'media/v4.18-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media
Pull media fixes from Mauro Carvalho Chehab:
- a deadlock regression at vsp1 driver
- some Remote Controller fixes related to the new BPF filter logic
added on it for Kernel 4.18.
* tag 'media/v4.18-3' of git://git.kernel.org/pub/scm/linux/kernel/git/mchehab/linux-media:
media: v4l: vsp1: Fix deadlock in VSPDL DRM pipelines
media: rc: read out of bounds if bpf reports high protocol number
media: bpf: ensure bpf program is freed on detach
media: rc: be less noisy when driver misbehaves
Merge misc fixes from Andrew Morton:
"3 fixes"
* emailed patches from Andrew Morton <akpm@linux-foundation.org>:
userfaultfd: remove uffd flags from vma->vm_flags if UFFD_EVENT_FORK fails
ipc/shm.c add ->pagesize function to shm_vm_ops
memcg: remove memcg_cgroup::id from IDR on mem_cgroup_css_alloc() failure
The fix in commit 0cbb4b4f4c ("userfaultfd: clear the
vma->vm_userfaultfd_ctx if UFFD_EVENT_FORK fails") cleared the
vma->vm_userfaultfd_ctx but kept userfaultfd flags in vma->vm_flags
that were copied from the parent process VMA.
As the result, there is an inconsistency between the values of
vma->vm_userfaultfd_ctx.ctx and vma->vm_flags which triggers BUG_ON
in userfaultfd_release().
Clearing the uffd flags from vma->vm_flags in case of UFFD_EVENT_FORK
failure resolves the issue.
Link: http://lkml.kernel.org/r/1532931975-25473-1-git-send-email-rppt@linux.vnet.ibm.com
Fixes: 0cbb4b4f4c ("userfaultfd: clear the vma->vm_userfaultfd_ctx if UFFD_EVENT_FORK fails")
Signed-off-by: Mike Rapoport <rppt@linux.vnet.ibm.com>
Reported-by: syzbot+121be635a7a35ddb7dcb@syzkaller.appspotmail.com
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Eric Biggers <ebiggers3@gmail.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Commit 05ea88608d ("mm, hugetlbfs: introduce ->pagesize() to
vm_operations_struct") adds a new ->pagesize() function to
hugetlb_vm_ops, intended to cover all hugetlbfs backed files.
With System V shared memory model, if "huge page" is specified, the
"shared memory" is backed by hugetlbfs files, but the mappings initiated
via shmget/shmat have their original vm_ops overwritten with shm_vm_ops,
so we need to add a ->pagesize function to shm_vm_ops. Otherwise,
vma_kernel_pagesize() returns PAGE_SIZE given a hugetlbfs backed vma,
result in below BUG:
fs/hugetlbfs/inode.c
443 if (unlikely(page_mapped(page))) {
444 BUG_ON(truncate_op);
resulting in
hugetlbfs: oracle (4592): Using mlock ulimits for SHM_HUGETLB is deprecated
------------[ cut here ]------------
kernel BUG at fs/hugetlbfs/inode.c:444!
Modules linked in: nfsv3 rpcsec_gss_krb5 nfsv4 ...
CPU: 35 PID: 5583 Comm: oracle_5583_sbt Not tainted 4.14.35-1829.el7uek.x86_64 #2
RIP: 0010:remove_inode_hugepages+0x3db/0x3e2
....
Call Trace:
hugetlbfs_evict_inode+0x1e/0x3e
evict+0xdb/0x1af
iput+0x1a2/0x1f7
dentry_unlink_inode+0xc6/0xf0
__dentry_kill+0xd8/0x18d
dput+0x1b5/0x1ed
__fput+0x18b/0x216
____fput+0xe/0x10
task_work_run+0x90/0xa7
exit_to_usermode_loop+0xdd/0x116
do_syscall_64+0x187/0x1ae
entry_SYSCALL_64_after_hwframe+0x150/0x0
[jane.chu@oracle.com: relocate comment]
Link: http://lkml.kernel.org/r/20180731044831.26036-1-jane.chu@oracle.com
Link: http://lkml.kernel.org/r/20180727211727.5020-1-jane.chu@oracle.com
Fixes: 05ea88608d ("mm, hugetlbfs: introduce ->pagesize() to vm_operations_struct")
Signed-off-by: Jane Chu <jane.chu@oracle.com>
Suggested-by: Mike Kravetz <mike.kravetz@oracle.com>
Reviewed-by: Mike Kravetz <mike.kravetz@oracle.com>
Acked-by: Davidlohr Bueso <dave@stgolabs.net>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Jérôme Glisse <jglisse@redhat.com>
Cc: Manfred Spraul <manfred@colorfullife.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
In case of memcg_online_kmem() failure, memcg_cgroup::id remains hashed
in mem_cgroup_idr even after memcg memory is freed. This leads to leak
of ID in mem_cgroup_idr.
This patch adds removal into mem_cgroup_css_alloc(), which fixes the
problem. For better readability, it adds a generic helper which is used
in mem_cgroup_alloc() and mem_cgroup_id_put_many() as well.
Link: http://lkml.kernel.org/r/152354470916.22460.14397070748001974638.stgit@localhost.localdomain
Fixes 73f576c04b ("mm: memcontrol: fix cgroup creation failure after many small jobs")
Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Michal Hocko <mhocko@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Current value for a target abort error is 0x010, however, this value
should in fact be 0x002. As it stands, the range of error is 0..7 so
it is currently never being detected. This bug has been in the driver
since the early 2.6.12 days (or before).
Detected by CoverityScan, CID#744290 ("Logically dead code")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit d250bf4e776ff09d5("blk-mq: only iterate over inflight requests
in blk_mq_tagset_busy_iter") uses 'blk_mq_rq_state(rq) == MQ_RQ_IN_FLIGHT'
to replace 'blk_mq_request_started(req)', this way is wrong, and causes
lots of test system hang during booting.
Fix the issue by using blk_mq_request_started(req) inside bt_tags_iter().
Fixes: d250bf4e77 ("blk-mq: only iterate over inflight requests in blk_mq_tagset_busy_iter")
Cc: Josef Bacik <josef@toxicpanda.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: Mark Brown <broonie@kernel.org>
Cc: Matt Hart <matthew.hart@linaro.org>
Cc: Johannes Thumshirn <jthumshirn@suse.de>
Cc: John Garry <john.garry@huawei.com>
Cc: Hannes Reinecke <hare@suse.com>,
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>,
Cc: James Bottomley <James.Bottomley@hansenpartnership.com>
Cc: linux-scsi@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Reviewed-by: Bart Van Assche <bart.vanassche@wdc.com>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Reported-by: Mark Brown <broonie@kernel.org>
Reported-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
The position calculation in iomap_bmap() shifts bno the wrong way,
so we don't progress properly and end up re-mapping block zero
over and over, yielding an unchanging physical block range as the
logical block advances:
# filefrag -Be file
ext: logical_offset: physical_offset: length: expected: flags:
0: 0.. 0: 21.. 21: 1: merged
1: 1.. 1: 21.. 21: 1: 22: merged
Discontinuity: Block 1 is at 21 (was 22)
2: 2.. 2: 21.. 21: 1: 22: merged
Discontinuity: Block 2 is at 21 (was 22)
3: 3.. 3: 21.. 21: 1: 22: merged
This breaks the FIBMAP interface for anyone using it (XFS), which
in turn breaks LILO, zipl, etc.
Bug-actually-spotted-by: Darrick J. Wong <darrick.wong@oracle.com>
Fixes: 89eb1906a9 ("iomap: add an iomap-based bmap implementation")
Cc: stable@vger.kernel.org
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
use actual protocol family passed by user rather than hardcoded
AF_INTE6 to cerate sockets.
current code is not working for IPv4.
Signed-off-by: Maninder Singh <maninder1.s@samsung.com>
Signed-off-by: Vaneet Narang <v.narang@samsung.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
- Fix potential clobbering of user vector register state by AES ghash code
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
iQEcBAABAgAGBQJbYtldAAoJELescNyEwWM0aisH/ReBqfJb1kTr5ybUriSTsuTl
Vjn8O17aH+177P3xlY47+cYWsvewJxiy7MldlLEiER0tsyjYvqTDuzy7+ffdJJ8R
rs0MGhYh9WpD3OVjng7TmwXD71xefk/gLq4MPqmgn9e/DoAt4HO/7jC4c+mSwxRZ
gHsAH5g6WUclRvU1zXaT8QKdZnmwudPFvy5O+bQYQrIJr++zBiyJ47qu1+TjJQuC
kVmM7XV0c0L1fK9z7A18PcW+tMlIu15ITzJwEercXen/7XypdDOufgc4Y9odHCkC
5ZWnV5wZtaJIuo/JWWPnoheWfTqIVF7ggXwsaXmZ0hKfQkBvbJ8fxhogCIWgt40=
=rpVW
-----END PGP SIGNATURE-----
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 regression fix from Will Deacon:
"Ard found a nasty arm64 regression in 4.18 where the AES ghash/gcm
code doesn't notify the kernel about its use of the vector registers,
therefore potentially corrupting live user state.
The fix is straightforward and Herbert agreed for it to go via arm64"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
crypto/arm64: aes-ce-gcm - add missing kernel_neon_begin/end pair
Pull networking fixes from David Miller:
"Fixes keep trickling in:
1) Various IP fragmentation memory limit hardening changes from Eric
Dumazet.
2) Revert ipv6 metrics leak change, it causes more problems than it
fixes for now.
3) Fix WoL regression in stmmac driver, from Jose Abreu.
4) Netlink socket spectre v1 gadget fix, from Jeremy Cline"
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
Revert "net/ipv6: fix metrics leak"
rxrpc: Fix user call ID check in rxrpc_service_prealloc_one
net: dsa: Do not suspend/resume closed slave_dev
netlink: Fix spectre v1 gadget in netlink_create()
Documentation: dpaa2: Use correct heading adornment
net: stmmac: Fix WoL for PCI-based setups
bonding: avoid lockdep confusion in bond_get_stats()
enic: do not call enic_change_mtu in enic_probe
ipv4: frags: handle possible skb truesize change
inet: frag: enforce memory limits earlier
net/mlx5e: IPoIB, Set the netdevice sw mtu in ipoib enhanced flow
net/mlx5e: Fix null pointer access when setting MTU of vport representor
net/mlx5e: Set port trust mode to PCP as default
net/mlx5e: E-Switch, Initialize eswitch only if eswitch manager
net: dsa: mv88e6xxx: Fix SERDES support on 88E6141/6341
brcmfmac: fix regression in parsing NVRAM for multiple devices
iwlwifi: add more card IDs for 9000 series
Previously in squashfs_readpage() when copying data into the page
cache, it used the length of the datablock read from the filesystem
(after decompression). However, if the filesystem has been corrupted
this data block may be short, which will leave pages unfilled.
The fix for this is to compute the expected number of bytes to copy
from the inode size, and use this to detect if the block is short.
Signed-off-by: Phillip Lougher <phillip@squashfs.org.uk>
Tested-by: Willy Tarreau <w@1wt.eu>
Cc: Анатолий Тросиненко <anatoly.trosinenko@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The squashfs fragment reading code doesn't actually verify that the
fragment is inside the fragment table. The end result _is_ verified to
be inside the image when actually reading the fragment data, but before
that is done, we may end up taking a page fault because the fragment
table itself might not even exist.
Another report from Anatoly and his endless squashfs image fuzzing.
Reported-by: Анатолий Тросиненко <anatoly.trosinenko@gmail.com>
Acked-by:: Phillip Lougher <phillip.lougher@gmail.com>,
Cc: Willy Tarreau <w@1wt.eu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This reverts commit df18b50448.
This change causes other problems and use-after-free situations as
found by syzbot.
Signed-off-by: David S. Miller <davem@davemloft.net>
The patch to fix the case where a lock request was interrupted ended up
changing default handling of errors such as NFS4ERR_DENIED and caused the
client to immediately resend the lock request. Let's do a partial revert
of that request so that the default is now to exit, but change the way
we handle resends to take into account the fact that the user may have
interrupted the request.
Reported-by: Kenneth Johansson <ken@kenjo.org>
Fixes: a3cf9bca2a ("NFSv4: Don't add a new lock on an interrupted wait..")
Cc: Benjamin Coddington <bcodding@redhat.com>
Cc: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Pull ARM fix from Russell King:
"Just a single fix this time around for recent binutils causing build
problems when generating Thumb-2 code"
* 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: 8781/1: Fix Thumb-2 syscall return for binutils 2.29+
Commit 2c4541e24c ("mm: use vma_init() to initialize VMAs on stack and
data segments") tried to initialize various left-over ad-hoc vma's
"properly", but actually made things worse for the temporary vma's used
for TLB flushing.
vma_init() doesn't actually initialize all of the vma, just a few
fields, so doing something like
- struct vm_area_struct vma = { .vm_mm = tlb->mm, };
+ struct vm_area_struct vma;
+
+ vma_init(&vma, tlb->mm);
was actually very bad: instead of having a nicely initialized vma with
every field but "vm_mm" zeroed, you'd have an entirely uninitialized vma
with only a couple of fields initialized. And they weren't even fields
that the code in question mostly cared about.
The flush_tlb_range() function takes a "struct vma" rather than a
"struct mm_struct", because a few architectures actually care about what
kind of range it is - being able to only do an ITLB flush if it's a
range that doesn't have data accesses enabled, for example. And all the
normal users already have the vma for doing the range invalidation.
But a few people want to call flush_tlb_range() with a range they just
made up, so they also end up using a made-up vma. x86 just has a
special "flush_tlb_mm_range()" function for this, but other
architectures (arm and ia64) do the "use fake vma" thing instead, and
thus got caught up in the vma_init() changes.
At the same time, the TLB flushing code really doesn't care about most
other fields in the vma, so vma_init() is just unnecessary and
pointless.
This fixes things by having an explicit "this is just an initializer for
the TLB flush" initializer macro, which is used by the arm/arm64/ia64
people who mis-use this interface with just a dummy vma.
Fixes: 2c4541e24c ("mm: use vma_init() to initialize VMAs on stack and data segments")
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Kirill Shutemov <kirill.shutemov@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Delete the old VM_BUG_ON_VMA() from zap_pmd_range(), which asserted
that mmap_sem must be held when splitting an "anonymous" vma there.
Whether that's still strictly true nowadays is not entirely clear,
but the danger of sometimes crashing on the BUG is now fairly clear.
Even with the new stricter rules for anonymous vma marking, the
condition it checks for can possible trigger. Commit 44960f2a7b
("staging: ashmem: Fix SIGBUS crash when traversing mmaped ashmem
pages") is good, and originally I thought it was safe from that
VM_BUG_ON_VMA(), because the /dev/ashmem fd exposed to the user is
disconnected from the vm_file in the vma, and madvise(,,MADV_REMOVE)
insists on VM_SHARED.
But after I read John's earlier mail, drawing attention to the
vfs_fallocate() in there: I may be wrong, and I don't know if Android
has THP in the config anyway, but it looks to me like an
unmap_mapping_range() from ashmem's vfs_fallocate() could hit precisely
the VM_BUG_ON_VMA(), once it's vma_is_anonymous().
Signed-off-by: Hugh Dickins <hughd@google.com>
Cc: John Stultz <john.stultz@linaro.org>
Cc: Kirill Shutemov <kirill.shutemov@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
There just check the user call ID isn't already in use, hence should
compare user_call_ID with xcall->user_call_ID, which is current
node's user_call_ID.
Fixes: 540b1c48c3 ("rxrpc: Fix deadlock between call creation and sendmsg/recvmsg")
Suggested-by: David Howells <dhowells@redhat.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
- Use ACPI FADT preferred PM Profile to distinguish Skylake
desktop processors from some server ones with the same model
number in order to limit the scope of the recent IO-wait boost
optimization to servers, as intended (Srinivas Pandruvada).
- Fix several issues in the turbostat utility:
* Fix the -S option on 1-CPU systems (Len Brown).
* Fix computations using incorrect processor core counts (Artem
Bityutskiy).
* Fix the x2apic debug message (Len Brown).
* Fix logical node enumeration to allow for non-sequential
physical nodes (Prarit Bhargava).
* Fix reported family on modern AMD processors (Calvin Walton).
* Clarify the RAPL column information in the man page (Len Brown).
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2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=oMfR
-----END PGP SIGNATURE-----
Merge tag 'pm-urgent-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"These fix the scope of a recent intel_pstate driver optimization used
incorrectly on some systems due to processor identification ambiguity
and fix a few issues in the turbostat utility, including three recent
regressions.
Specifics:
- Use ACPI FADT preferred PM Profile to distinguish Skylake desktop
processors from some server ones with the same model number in
order to limit the scope of the recent IO-wait boost optimization
to servers, as intended (Srinivas Pandruvada).
- Fix several issues in the turbostat utility:
* Fix the -S option on 1-CPU systems (Len Brown).
* Fix computations using incorrect processor core counts (Artem
Bityutskiy).
* Fix the x2apic debug message (Len Brown).
* Fix logical node enumeration to allow for non-sequential
physical nodes (Prarit Bhargava).
* Fix reported family on modern AMD processors (Calvin Walton).
* Clarify the RAPL column information in the man page (Len Brown)"
* tag 'pm-urgent-4.18' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
cpufreq: intel_pstate: Limit the scope of HWP dynamic boost platforms
tools/power turbostat: version 18.07.27
tools/power turbostat: Read extended processor family from CPUID
tools/power turbostat: Fix logical node enumeration to allow for non-sequential physical nodes
tools/power turbostat: fix x2apic debug message output file
tools/power turbostat: fix bogus summary values
tools/power turbostat: fix -S on UP systems
tools/power turbostat: Update turbostat(8) RAPL throttling column description
Anatoly continues to find issues with fuzzed squashfs images.
This time, corrupt, missing, or undersized data for the page filling
wasn't checked for, because the squashfs_{copy,read}_cache() functions
did the squashfs_copy_data() call without checking the resulting data
size.
Which could result in the page cache pages being incompletely filled in,
and no error indication to the user space reading garbage data.
So make a helper function for the "fill in pages" case, because the
exact same incomplete sequence existed in two places.
[ I should have made a squashfs branch for these things, but I didn't
intend to start doing them in the first place.
My historical connection through cramfs is why I got into looking at
these issues at all, and every time I (continue to) think it's a
one-off.
Because _this_ time is always the last time. Right? - Linus ]
Reported-by: Anatoly Trosinenko <anatoly.trosinenko@gmail.com>
Tested-by: Willy Tarreau <w@1wt.eu>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Phillip Lougher <phillip@squashfs.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Amit Pundir and Youling in parallel reported crashes with recent
mainline kernels running Android:
F DEBUG : *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
F DEBUG : Build fingerprint: 'Android/db410c32_only/db410c32_only:Q/OC-MR1/102:userdebug/test-key
F DEBUG : Revision: '0'
F DEBUG : ABI: 'arm'
F DEBUG : pid: 2261, tid: 2261, name: zygote >>> zygote <<<
F DEBUG : signal 7 (SIGBUS), code 2 (BUS_ADRERR), fault addr 0xec00008
... <snip> ...
F DEBUG : backtrace:
F DEBUG : #00 pc 00001c04 /system/lib/libc.so (memset+48)
F DEBUG : #01 pc 0010c513 /system/lib/libart.so (create_mspace_with_base+82)
F DEBUG : #02 pc 0015c601 /system/lib/libart.so (art::gc::space::DlMallocSpace::CreateMspace(void*, unsigned int, unsigned int)+40)
F DEBUG : #03 pc 0015c3ed /system/lib/libart.so (art::gc::space::DlMallocSpace::CreateFromMemMap(art::MemMap*, std::__1::basic_string<char, std::__ 1::char_traits<char>, std::__1::allocator<char>> const&, unsigned int, unsigned int, unsigned int, unsigned int, bool)+36)
...
This was bisected back to commit bfd40eaff5 ("mm: fix
vma_is_anonymous() false-positives").
create_mspace_with_base() in the trace above, utilizes ashmem, and with
ashmem, for shared mappings we use shmem_zero_setup(), which sets the
vma->vm_ops to &shmem_vm_ops. But for private ashmem mappings nothing
sets the vma->vm_ops.
Looking at the problematic patch, it seems to add a requirement that one
call vma_set_anonymous() on a vma, otherwise the dummy_vm_ops will be
used. Using the dummy_vm_ops seem to triggger SIGBUS when traversing
unmapped pages.
Thus, this patch adds a call to vma_set_anonymous() for ashmem private
mappings and seems to avoid the reported problem.
Fixes: bfd40eaff5 ("mm: fix vma_is_anonymous() false-positives")
Cc: Kirill Shutemov <kirill.shutemov@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Joel Fernandes <joelaf@google.com>
Cc: Colin Cross <ccross@google.com>
Cc: Matthew Wilcox <willy@infradead.org>
Reported-by: Amit Pundir <amit.pundir@linaro.org>
Reported-by: Youling 257 <youling257@gmail.com>
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
