The kbuild test robot reported the following warning:
arch/sparc/mm/srmmu.c: In function 'srmmu_nocache_init': arch/sparc/mm/srmmu.c:300:9: error: variable 'pud' set but not used [-Werror=unused-but-set-variable]
300 | pud_t *pud;
This warning is caused by misprint in the page table traversal in
srmmu_nocache_init() function which accessed a PMD entry using PGD
rather than PUD.
Since sparc32 has only 3 page table levels, the PGD and PUD are
essentially the same and usage of __nocache_fix() removed the type
checking.
Use PUD for the consistency and to silence the compiler warning.
Fixes: 7235db268a ("sparc32: use pgtable-nopud instead of 4level-fixup")
Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: David S. Miller <davem@davemloft.net>
Cc: Anatoly Pugachev <matorola@gmail.com>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/20200520132005.GM1059226@linux.ibm.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
My email address has changed due to system upgrade, so please update it
in MAINTAINERS list. My old address (n-horiguchi@ah.jp.nec.com) will be
still active for a few months.
Note that my email system has some encoding issue and can't send patches
in raw format via git-send-email. So patches from me will be delivered
via my free address (nao.horiguchi@gmail.com) or GitHub.
Signed-off-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Link: http://lkml.kernel.org/r/1589874488-9247-1-git-send-email-naoya.horiguchi@nec.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Using the socket ioctls on arch/sh (and only there) causes build time
problems when __kernel_old_timeval/__kernel_old_timespec are not already
visible to the compiler.
Add an explict include line for the header that defines these
structures.
Fixes: 8c709f9a06 ("y2038: sh: remove timeval/timespec usage from headers")
Fixes: 0768e17073 ("net: socket: implement 64-bit timestamps")
Reported-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Rich Felker <dalias@libc.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/20200519131327.1836482-1-arnd@arndb.de
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
During early boot, while KASAN is not yet initialized, it is possible to
enter reporting code-path and end up in kasan_report().
While uninitialized, the branch there prevents generating any reports,
however, under certain circumstances when branches are being traced
(TRACE_BRANCH_PROFILING), we may recurse deep enough to cause kernel
reboots without warning.
To prevent similar issues in future, we should disable branch tracing
for the core runtime.
[elver@google.com: remove duplicate DISABLE_BRANCH_PROFILING, per Qian Cai]
Link: https://lore.kernel.org/lkml/20200517011732.GE24705@shao2-debian/
Link: http://lkml.kernel.org/r/20200522075207.157349-1-elver@google.com
Reported-by: kernel test robot <rong.a.chen@intel.com>
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: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Qian Cai <cai@lca.pw>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r//20200517011732.GE24705@shao2-debian/
Link: http://lkml.kernel.org/r/20200519182459.87166-1-elver@google.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
In the case of get_user_pages_fast() returning fewer pages than
requested, rio_dma_transfer() does not quite do the right thing. It
attempts to release all the pages that were requested, rather than just
the pages that were pinned.
Fix the error handling so that only the pages that were successfully
pinned are released.
Fixes: e8de370188 ("rapidio: add mport char device driver")
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Alexandre Bounine <alex.bou9@gmail.com>
Cc: Sumit Semwal <sumit.semwal@linaro.org>
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/20200517235620.205225-2-jhubbard@nvidia.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This is easily reproducible via CC=clang + CONFIG_STAGING=y +
CONFIG_VT6656=m.
It turns out that if your config tickles __builtin_constant_p via
differences in choices to inline or not, these statements produce
invalid assembly:
$ cat foo.c
long a(long b, long c) {
asm("orb %1, %0" : "+q"(c): "r"(b));
return c;
}
$ gcc foo.c
foo.c: Assembler messages:
foo.c:2: Error: `%rax' not allowed with `orb'
Use the `%b` "x86 Operand Modifier" to instead force register allocation
to select a lower-8-bit GPR operand.
The "q" constraint only has meaning on -m32 otherwise is treated as
"r". Not all GPRs have low-8-bit aliases for -m32.
Fixes: 1651e70066 ("x86: Fix bitops.h warning with a moved cast")
Reported-by: kernelci.org bot <bot@kernelci.org>
Suggested-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Suggested-by: Brian Gerst <brgerst@gmail.com>
Suggested-by: H. Peter Anvin <hpa@zytor.com>
Suggested-by: Ilie Halip <ilie.halip@gmail.com>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Tested-by: Sedat Dilek <sedat.dilek@gmail.com>
Tested-by: Nathan Chancellor <natechancellor@gmail.com> [build, clang-11]
Reviewed-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-By: Brian Gerst <brgerst@gmail.com>
Reviewed-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Marco Elver <elver@google.com>
Cc: "Paul E. McKenney" <paulmck@kernel.org>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Daniel Axtens <dja@axtens.net>
Cc: "Peter Zijlstra (Intel)" <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20200508183230.229464-1-ndesaulniers@google.com
Link: https://github.com/ClangBuiltLinux/linux/issues/961
Link: https://lore.kernel.org/lkml/20200504193524.GA221287@google.com/
Link: https://gcc.gnu.org/onlinedocs/gcc/Extended-Asm.html#x86Operandmodifiers
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Assume we have kmem configured and loaded:
[root@localhost ~]# cat /proc/iomem
...
140000000-33fffffff : Persistent Memory$
140000000-1481fffff : namespace0.0
150000000-33fffffff : dax0.0
150000000-33fffffff : System RAM
Assume we try to unload kmem. This force-unloading will work, even if
memory cannot get removed from the system.
[root@localhost ~]# rmmod kmem
[ 86.380228] removing memory fails, because memory [0x0000000150000000-0x0000000157ffffff] is onlined
...
[ 86.431225] kmem dax0.0: DAX region [mem 0x150000000-0x33fffffff] cannot be hotremoved until the next reboot
Now, we can reconfigure the namespace:
[root@localhost ~]# ndctl create-namespace --force --reconfig=namespace0.0 --mode=devdax
[ 131.409351] nd_pmem namespace0.0: could not reserve region [mem 0x140000000-0x33fffffff]dax
[ 131.410147] nd_pmem: probe of namespace0.0 failed with error -16namespace0.0 --mode=devdax
...
This fails as expected due to the busy memory resource, and the memory
cannot be used. However, the dax0.0 device is removed, and along its
name.
The name of the memory resource now points at freed memory (name of the
device):
[root@localhost ~]# cat /proc/iomem
...
140000000-33fffffff : Persistent Memory
140000000-1481fffff : namespace0.0
150000000-33fffffff : �_�^7_��/_��wR��WQ���^��� ...
150000000-33fffffff : System RAM
We have to make sure to duplicate the string. While at it, remove the
superfluous setting of the name and fixup a stale comment.
Fixes: 9f960da72b ("device-dax: "Hotremove" persistent memory that is used like normal RAM")
Signed-off-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Vishal Verma <vishal.l.verma@intel.com>
Cc: Dave Jiang <dave.jiang@intel.com>
Cc: Pavel Tatashin <pasha.tatashin@soleen.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: <stable@vger.kernel.org> [5.3]
Link: http://lkml.kernel.org/r/20200508084217.9160-2-david@redhat.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This reverts commit 4ef12f7198.
Guenter reports:
All my arm64be (arm64 big endian) boot tests crash with this
patch applied. Reverting it fixes the problem. Crash log and
bisect results (from pending-fixes branch) below.
And also:
arm64 images don't crash but report lots of "poison overwritten"
backtraces like the one below. On arm, I see "refcount_t:
underflow", also attached. I didn't bisect those, but given the
context I would suspect the same culprit.
Reported-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20200513151840.36400-1-heikki.krogerus@linux.intel.com
Cc: Naresh Kamboju <naresh.kamboju@linaro.org>
Cc: kernel test robot <rong.a.chen@intel.com>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: Brendan Higgins <brendanhiggins@google.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Three minor fixes, two in drivers, one to fix a hang after reset with
iSCSI, and one to avoid a spurious log message; and the final core one
to correct a suspend/resume miscount with quiesced devices.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
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Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Three minor fixes, two in drivers, one to fix a hang after reset with
iSCSI, and one to avoid a spurious log message; and the final core one
to correct a suspend/resume miscount with quiesced devices"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: target: Put lun_ref at end of tmr processing
scsi: pm: Balance pm_only counter of request queue during system resume
scsi: qla2xxx: Do not log message when reading port speed via sysfs
vmwgfx:
- change maintainers
- fix redundant assignment
- fix parameter name
- fix return value
etnaviv:
- memory leak fix when userspace passes a invalid softpin address
- off-by-one crashing the kernel in the perfmon domain iteration when
the GPU core has both 2D and 3D capabilities
amdgpu:
- DP fix
- Floating point fix
- Fix cursor stutter issue
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Merge tag 'drm-fixes-2020-05-23' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie:
"Things seemed to have quieten down, though no i915 pull (I even gave
them an extra 12 hours in case they were late).
The amdgpu floating point fix is probably the largest, but it just
moves some code around to it doesn't do fpu stuff outside the fpu
boundaries. Otherwise it's just a couple of vmwgfx fixes (maintainer
change) and two etnaviv fixes.
vmwgfx:
- change maintainers
- fix redundant assignment
- fix parameter name
- fix return value
etnaviv:
- memory leak fix when userspace passes a invalid softpin address
- off-by-one crashing the kernel in the perfmon domain iteration when
the GPU core has both 2D and 3D capabilities
amdgpu:
- DP fix
- Floating point fix
- Fix cursor stutter issue"
* tag 'drm-fixes-2020-05-23' of git://anongit.freedesktop.org/drm/drm:
drm/amd/display: Defer cursor lock until after VUPDATE
drm/amd/display: Remove dml_common_def file
drm/amd/display: DP training to set properly SCRAMBLING_DISABLE
drm/edid: Add Oculus Rift S to non-desktop list
drm/etnaviv: Fix a leak in submit_pin_objects()
drm/etnaviv: fix perfmon domain interation
drm/vmwgfx: Return true in function vmw_fence_obj_signaled()
drm/vmwgfx: remove redundant assignment to variable ret
drm/vmwgfx: Fix parameter name in vmw_bo_init
drm/vmwgfx: update MAINTAINERS entry
Currently, if an error occurred during mlx5_function_setup(), we
keep dev->state as DEVICE_STATE_UP.
Fixing it by adding a goto label.
Fixes: e161105e58 ("net/mlx5: Function setup/teardown procedures")
Signed-off-by: Shay Drory <shayd@mellanox.com>
Reviewed-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
The correct way is to us the flow_cls_offload_flow_rule() wrapper
instead of f->rule directly.
Fixes: 4c3844d9e9 ("net/mlx5e: CT: Introduce connection tracking")
Signed-off-by: Roi Dayan <roid@mellanox.com>
Reviewed-by: Oz Shlomo <ozsh@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
On sq closure when we free its descriptors, we should also update netdev
txq on completions which would not arrive. Otherwise if we reopen sqs
and attach them back, for example on fw fatal recovery flow, we may get
tx timeout.
Fixes: 29429f3300 ("net/mlx5e: Timeout if SQ doesn't flush during close")
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Add del_sw_func cb for root ns. Now there is no need to
maintain a case of del_sw_func being null when freeing the node.
Fixes: 2cc43b494a ("net/mlx5_core: Managing root flow table")
Signed-off-by: Roi Dayan <roid@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Reviewed-by: Paul Blakey <paulb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Unmanaged flow tables doesn't have a parent and tree_put_node()
assume there is always a parent if cleaning is needed. fix that.
Fixes: 5281a0c909 ("net/mlx5: fs_core: Introduce unmanaged flow tables")
Signed-off-by: Roi Dayan <roid@mellanox.com>
Reviewed-by: Mark Bloch <markb@mellanox.com>
Reviewed-by: Paul Blakey <paulb@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Fix memory leak in mlx5_events_init(), in case
create_single_thread_workqueue() fails, events
struct should be freed.
Fixes: 5d3c537f90 ("net/mlx5: Handle event of power detection in the PCIE slot")
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
In the cited commit inner_tirs argument was added to create and destroy
inner tirs, and no indication was added to mlx5e_modify_tirs_hash()
function. In order to have a consistent handling, use
inner_indir_tir[0].tirn in tirs destroy/modify function as an indication
to whether inner tirs are created.
Inner tirs are not created for representors and before this commit,
a call to mlx5e_modify_tirs_hash() was sending HW commands to
modify non-existent inner tirs.
Fixes: 46dc933cee ("net/mlx5e: Provide explicit directive if to create inner indirect tirs")
Signed-off-by: Roi Dayan <roid@mellanox.com>
Reviewed-by: Vlad Buslov <vladbu@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
The TLS TIS object contains the dek/key ID.
By destroying the key first, the TIS would contain an invalid
non-existing key ID.
Reverse the destroy order, this also acheives the desired assymetry
between the destroy and the create flows.
Fixes: d2ead1f360 ("net/mlx5e: Add kTLS TX HW offload support")
Signed-off-by: Tariq Toukan <tariqt@mellanox.com>
Reviewed-by: Boris Pismenny <borisp@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
After changing the parent_id to be the same for both NICs of same
The cited commit wrongly allow offload of tc redirect flows from
VF to uplink and vice versa when devcies are on different eswitch,
these cases aren't supported by HW.
Disallow the above offloads when devcies are on different eswitch
and VF LAG is not configured.
Fixes: f6dc1264f1 ("net/mlx5e: Disallow tc redirect offload cases we don't support")
Signed-off-by: Maor Dickman <maord@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
When driver is reloading during recovery flow, it can't get new commands
till command interface is up again. Otherwise we may get to null pointer
trying to access non initialized command structures.
Add cmdif state to avoid processing commands while cmdif is not ready.
Fixes: e126ba97db ("mlx5: Add driver for Mellanox Connect-IB adapters")
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
After driver creates (via FW command) an EQ for commands, the driver will
be informed on new commands completion by EQE. However, due to a race in
driver's internal command mode metadata update, some new commands will
still be miss-handled by driver as if we are in polling mode. Such commands
can get two non forced completion, leading to already freed command entry
access.
CREATE_EQ command, that maps EQ to the command queue must be posted to the
command queue while it is empty and no other command should be posted.
Add SW mechanism that once the CREATE_EQ command is about to be executed,
all other commands will return error without being sent to the FW. Allow
sending other commands only after successfully changing the driver's
internal command mode metadata.
We can safely return error to all other commands while creating the command
EQ, as all other commands might be sent from the user/application during
driver load. Application can rerun them later after driver's load was
finished.
Fixes: e126ba97db ("mlx5: Add driver for Mellanox Connect-IB adapters")
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
When FW response to commands is very slow and all command entries in
use are waiting for completion we can have a race where commands can get
timeout before they get out of the queue and handled. Timeout
completion on uninitialized command will cause releasing command's
buffers before accessing it for initialization and then we will get NULL
pointer exception while trying access it. It may also cause releasing
buffers of another command since we may have timeout completion before
even allocating entry index for this command.
Add entry handling completion to avoid this race.
Fixes: e126ba97db ("mlx5: Add driver for Mellanox Connect-IB adapters")
Signed-off-by: Moshe Shemesh <moshe@mellanox.com>
Signed-off-by: Eran Ben Elisha <eranbe@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
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Merge tag 'rxrpc-fixes-20200523-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
David Howells says:
====================
rxrpc: Fix a warning and a leak [ver #2]
Here are a couple of fixes for AF_RXRPC:
(1) Fix an uninitialised variable warning.
(2) Fix a leak of the ticket on error in rxkad.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
A ticket was not released after a call of the function
"rxkad_decrypt_ticket" failed. Thus replace the jump target
"temporary_error_free_resp" by "temporary_error_free_ticket".
Fixes: 8c2f826dc3 ("rxrpc: Don't put crypto buffers on the stack")
Signed-off-by: Qiushi Wu <wu000273@umn.edu>
Signed-off-by: David Howells <dhowells@redhat.com>
cc: Markus Elfring <Markus.Elfring@web.de>
Fix a warning due to an uninitialised variable.
le included from ../fs/afs/fs_probe.c:11:
../fs/afs/fs_probe.c: In function 'afs_fileserver_probe_result':
../fs/afs/internal.h:1453:2: warning: 'rtt_us' may be used uninitialized in this function [-Wmaybe-uninitialized]
1453 | printk("[%-6.6s] "FMT"\n", current->comm ,##__VA_ARGS__)
| ^~~~~~
../fs/afs/fs_probe.c:35:15: note: 'rtt_us' was declared here
Signed-off-by: David Howells <dhowells@redhat.com>
In cas_init_one(), "pdev" is requested by "pci_request_regions", but it
was not released after a call of the function “pci_write_config_byte”
failed. Thus replace the jump target “err_write_cacheline” by
"err_out_free_res".
Fixes: 1f26dac320 ("[NET]: Add Sun Cassini driver.")
Signed-off-by: Qiushi Wu <wu000273@umn.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
ocelot_set_ageing_time has 2 callers:
- felix_set_ageing_time: from drivers/net/dsa/ocelot/felix.c
- ocelot_port_attr_ageing_set: from drivers/net/ethernet/mscc/ocelot.c
The issue described in the fixed commit below actually happened for the
felix_set_ageing_time code path only, since ocelot_port_attr_ageing_set
was already dividing by 1000. So to make both paths symmetrical (and to
fix addresses getting aged way too fast on Ocelot), stop dividing by
1000 at caller side altogether.
Fixes: c0d7eccbc7 ("net: mscc: ocelot: ANA_AUTOAGE_AGE_PERIOD holds a value in seconds, not ms")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
According to r8168 vendor driver DASHv3 chips like RTL8168fp/RTL8117
need a special addressing for OCP access.
Fix is compile-tested only due to missing test hardware.
Fixes: 1287723aa1 ("r8169: add support for RTL8117")
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ido Schimmel says:
====================
mlxsw: Various fixes
Patch #1 from Jiri fixes a use-after-free discovered while fuzzing mlxsw
/ devlink with syzkaller.
Patch #2 from Amit works around a limitation in new versions of arping,
which is used in several selftests.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Starting from iputils s20190709 (used in Fedora 31), arping does not
support timeout being specified as a decimal:
$ arping -c 1 -I swp1 -b 192.0.2.66 -q -w 0.1
arping: invalid argument: '0.1'
Previously, such timeouts were rounded to an integer.
Fix this by specifying the timeout as an integer.
Fixes: a5ee171d08 ("selftests: mlxsw: qos_mc_aware: Add a test for UC awareness")
Signed-off-by: Amit Cohen <amitc@mellanox.com>
Reviewed-by: Petr Machata <petrm@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In case of reload fail, the mlxsw_sp->ports contains a pointer to a
freed memory (either by reload_down() or reload_up() error path).
Fix this by initializing the pointer to NULL and checking it before
dereferencing in split/unsplit/type_set callpaths.
Fixes: 24cc68ad6c ("mlxsw: core: Add support for reload")
Reported-by: Danielle Ratson <danieller@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The ipq806x_gmac_probe() function enables the PTP clock but not the
appropriate interface clocks. This means that if the bootloader hasn't
done so attempting to bring up the interface will fail with an error
like:
[ 59.028131] ipq806x-gmac-dwmac 37600000.ethernet: Failed to reset the dma
[ 59.028196] ipq806x-gmac-dwmac 37600000.ethernet eth1: stmmac_hw_setup: DMA engine initialization failed
[ 59.034056] ipq806x-gmac-dwmac 37600000.ethernet eth1: stmmac_open: Hw setup failed
This patch, a slightly cleaned up version of one posted by Sergey
Sergeev in:
https://forum.openwrt.org/t/support-for-mikrotik-rb3011uias-rm/4064/257
correctly enables the clock; we have already configured the source just
before this.
Tested on a MikroTik RB3011.
Signed-off-by: Jonathan McDowell <noodles@earth.li>
Signed-off-by: David S. Miller <davem@davemloft.net>
Ido Schimmel says:
====================
netdevsim: Two small fixes
Fix two bugs observed while analyzing regression failures.
Patch #1 fixes a bug where sometimes the drop counter of a packet trap
policer would not increase.
Patch #2 adds a missing initialization of a variable in a related
selftest.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
The variable is used by log_test() to check if the test case completely
successfully or not. In case it is not initialized at the start of a
test case, it is possible for the test case to fail despite not
encountering any errors.
Example:
```
...
TEST: Trap group statistics [ OK ]
TEST: Trap policer [FAIL]
Policer drop counter was not incremented
TEST: Trap policer binding [FAIL]
Policer drop counter was not incremented
```
Failure of trap_policer_test() caused trap_policer_bind_test() to fail
as well.
Fix by adding missing initialization of the variable.
Fixes: 5fbff58e27 ("selftests: netdevsim: Add test cases for devlink-trap policers")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
In case the policer drop counter is retrieved when the jiffies value is
a multiple of 64, the counter will not be incremented.
This randomly breaks a selftest [1] the reads the counter twice and
checks that it was incremented:
```
TEST: Trap policer [FAIL]
Policer drop counter was not incremented
```
Fix by always incrementing the counter by 1.
[1] tools/testing/selftests/drivers/net/netdevsim/devlink_trap.sh
Fixes: ad188458d0 ("netdevsim: Add devlink-trap policer support")
Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Reviewed-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Merge tag 'rxrpc-fixes-20200520' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-fs
David Howells says:
====================
rxrpc: Fix retransmission timeout and ACK discard
Here are a couple of fixes and an extra tracepoint for AF_RXRPC:
(1) Calculate the RTO pretty much as TCP does, rather than making
something up, including an initial 4s timeout (which causes return
probes from the fileserver to fail if a packet goes missing), and add
backoff.
(2) Fix the discarding of out-of-order received ACKs. We mustn't let the
hard-ACK point regress, nor do we want to do unnecessary
retransmission because the soft-ACK list regresses. This is not
trivial, however, due to some loose wording in various old protocol
specs, the ACK field that should be used for this sometimes has the
wrong information in it.
(3) Add a tracepoint to log a discarded ACK.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
ugeth_quiesce/activate are used to halt the controller when there is a
link change that requires to reconfigure the mac.
The previous implementation called netif_device_detach(). This however
causes the initial activation of the netdevice to fail precisely because
it's detached. For details, see [1].
A possible workaround was the revert of commit
net: linkwatch: add check for netdevice being present to linkwatch_do_dev
However, the check introduced in the above commit is correct and shall be
kept.
The netif_device_detach() is thus replaced with
netif_tx_stop_all_queues() that prevents any tranmission. This allows to
perform mac config change required by the link change, without detaching
the corresponding netdevice and thus not preventing its initial
activation.
[1] https://lists.openwall.net/netdev/2020/01/08/201
Signed-off-by: Valentin Longchamp <valentin@longchamp.me>
Acked-by: Matteo Ghidoni <matteo.ghidoni@ch.abb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Commit bdf6fa52f0 ("sctp: handle association restarts when the
socket is closed.") starts shutdown when an association is restarted,
if in SHUTDOWN-PENDING state and the socket is closed. However, the
rationale stated in that commit applies also when in SHUTDOWN-SENT
state - we don't want to move an association to ESTABLISHED state when
the socket has been closed, because that results in an association
that is unreachable from user space.
The problem scenario:
1. Client crashes and/or restarts.
2. Server (using one-to-one socket) calls close(). SHUTDOWN is lost.
3. Client reconnects using the same addresses and ports.
4. Server's association is restarted. The association and the socket
move to ESTABLISHED state, even though the server process has
closed its descriptor.
Also, after step 4 when the server process exits, some resources are
leaked in an attempt to release the underlying inet sock structure in
ESTABLISHED state:
IPv4: Attempt to release TCP socket in state 1 00000000377288c7
Fix by acting the same way as in SHUTDOWN-PENDING state. That is, if
an association is restarted in SHUTDOWN-SENT state and the socket is
closed, then start shutdown and don't move the association or the
socket to ESTABLISHED state.
Fixes: bdf6fa52f0 ("sctp: handle association restarts when the socket is closed.")
Signed-off-by: Jere Leppänen <jere.leppanen@nokia.com>
Acked-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
When rxhash is enabled on any ethernet port except the first in each CP
block, traffic flow is prevented. The analysis is below:
I've been investigating this afternoon, and what I've found, comparing
a kernel without 895586d5dc and with 895586d5dc applied is:
- The table programmed into the hardware via mvpp22_rss_fill_table()
appears to be identical with or without the commit.
- When rxhash is enabled on eth2, mvpp2_rss_port_c2_enable() reports
that c2.attr[0] and c2.attr[2] are written back containing:
- with 895586d5dc, failing: 00200000 40000000
- without 895586d5dc, working: 04000000 40000000
- When disabling rxhash, c2.attr[0] and c2.attr[2] are written back as:
04000000 00000000
The second value represents the MVPP22_CLS_C2_ATTR2_RSS_EN bit, the
first value is the queue number, which comprises two fields. The high
5 bits are 24:29 and the low three are 21:23 inclusive. This comes
from:
c2.attr[0] = MVPP22_CLS_C2_ATTR0_QHIGH(qh) |
MVPP22_CLS_C2_ATTR0_QLOW(ql);
So, the working case gives eth2 a queue id of 4.0, or 32 as per
port->first_rxq, and the non-working case a queue id of 0.1, or 1.
The allocation of queue IDs seems to be in mvpp2_port_probe():
if (priv->hw_version == MVPP21)
port->first_rxq = port->id * port->nrxqs;
else
port->first_rxq = port->id * priv->max_port_rxqs;
Where:
if (priv->hw_version == MVPP21)
priv->max_port_rxqs = 8;
else
priv->max_port_rxqs = 32;
Making the port 0 (eth0 / eth1) have port->first_rxq = 0, and port 1
(eth2) be 32. It seems the idea is that the first 32 queues belong to
port 0, the second 32 queues belong to port 1, etc.
mvpp2_rss_port_c2_enable() gets the queue number from it's parameter,
'ctx', which comes from mvpp22_rss_ctx(port, 0). This returns
port->rss_ctx[0].
mvpp22_rss_context_create() is responsible for allocating that, which
it does by looking for an unallocated priv->rss_tables[] pointer. This
table is shared amongst all ports on the CP silicon.
When we write the tables in mvpp22_rss_fill_table(), the RSS table
entry is defined by:
u32 sel = MVPP22_RSS_INDEX_TABLE(rss_ctx) |
MVPP22_RSS_INDEX_TABLE_ENTRY(i);
where rss_ctx is the context ID (queue number) and i is the index in
the table.
If we look at what is written:
- The first table to be written has "sel" values of 00000000..0000001f,
containing values 0..3. This appears to be for eth1. This is table 0,
RX queue number 0.
- The second table has "sel" values of 00000100..0000011f, and appears
to be for eth2. These contain values 0x20..0x23. This is table 1,
RX queue number 0.
- The third table has "sel" values of 00000200..0000021f, and appears
to be for eth3. These contain values 0x40..0x43. This is table 2,
RX queue number 0.
How do queue numbers translate to the RSS table? There is another
table - the RXQ2RSS table, indexed by the MVPP22_RSS_INDEX_QUEUE field
of MVPP22_RSS_INDEX and accessed through the MVPP22_RXQ2RSS_TABLE
register. Before 895586d5dc, it was:
mvpp2_write(priv, MVPP22_RSS_INDEX,
MVPP22_RSS_INDEX_QUEUE(port->first_rxq));
mvpp2_write(priv, MVPP22_RXQ2RSS_TABLE,
MVPP22_RSS_TABLE_POINTER(port->id));
and after:
mvpp2_write(priv, MVPP22_RSS_INDEX, MVPP22_RSS_INDEX_QUEUE(ctx));
mvpp2_write(priv, MVPP22_RXQ2RSS_TABLE, MVPP22_RSS_TABLE_POINTER(ctx));
Before the commit, for eth2, that would've contained '32' for the
index and '1' for the table pointer - mapping queue 32 to table 1.
Remember that this is queue-high.queue-low of 4.0.
After the commit, we appear to map queue 1 to table 1. That again
looks fine on the face of it.
Section 9.3.1 of the A8040 manual seems indicate the reason that the
queue number is separated. queue-low seems to always come from the
classifier, whereas queue-high can be from the ingress physical port
number or the classifier depending on the MVPP2_CLS_SWFWD_PCTRL_REG.
We set the port bit in MVPP2_CLS_SWFWD_PCTRL_REG, meaning that queue-high
comes from the MVPP2_CLS_SWFWD_P2HQ_REG() register... and this seems to
be where our bug comes from.
mvpp2_cls_oversize_rxq_set() sets this up as:
mvpp2_write(port->priv, MVPP2_CLS_SWFWD_P2HQ_REG(port->id),
(port->first_rxq >> MVPP2_CLS_OVERSIZE_RXQ_LOW_BITS));
val = mvpp2_read(port->priv, MVPP2_CLS_SWFWD_PCTRL_REG);
val |= MVPP2_CLS_SWFWD_PCTRL_MASK(port->id);
mvpp2_write(port->priv, MVPP2_CLS_SWFWD_PCTRL_REG, val);
Setting the MVPP2_CLS_SWFWD_PCTRL_MASK bit means that the queue-high
for eth2 is _always_ 4, so only queues 32 through 39 inclusive are
available to eth2. Yet, we're trying to tell the classifier to set
queue-high, which will be ignored, to zero. Hence, the queue-high
field (MVPP22_CLS_C2_ATTR0_QHIGH()) from the classifier will be
ignored.
This means we end up directing traffic from eth2 not to queue 1, but
to queue 33, and then we tell it to look up queue 33 in the RSS table.
However, RSS table has not been programmed for queue 33, and so it ends
up (presumably) dropping the packets.
It seems that mvpp22_rss_context_create() doesn't take account of the
fact that the upper 5 bits of the queue ID can't actually be changed
due to the settings in mvpp2_cls_oversize_rxq_set(), _or_ it seems that
mvpp2_cls_oversize_rxq_set() has been missed in this commit. Either
way, these two functions mutually disagree with what queue number
should be used.
Looking deeper into what mvpp2_cls_oversize_rxq_set() and the MTU
validation is doing, it seems that MVPP2_CLS_SWFWD_P2HQ_REG() is used
for over-sized packets attempting to egress through this port. With
the classifier having had RSS enabled and directing eth2 traffic to
queue 1, we may still have packets appearing on queue 32 for this port.
However, the only way we may end up with over-sized packets attempting
to egress through eth2 - is if the A8040 forwards frames between its
ports. From what I can see, we don't support that feature, and the
kernel restricts the egress packet size to the MTU. In any case, if we
were to attempt to transmit an oversized packet, we have no support in
the kernel to deal with that appearing in the port's receive queue.
So, this patch attempts to solve the issue by clearing the
MVPP2_CLS_SWFWD_PCTRL_MASK() bit, allowing MVPP22_CLS_C2_ATTR0_QHIGH()
from the classifier to define the queue-high field of the queue number.
My testing seems to confirm my findings above - clearing this bit
means that if I enable rxhash on eth2, the interface can then pass
traffic, as we are now directing traffic to RX queue 1 rather than
queue 33. Traffic still seems to work with rxhash off as well.
Reported-by: Matteo Croce <mcroce@redhat.com>
Tested-by: Matteo Croce <mcroce@redhat.com>
Fixes: 895586d5dc ("net: mvpp2: cls: Use RSS contexts to handle RSS tables")
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Daniel Borkmann says:
====================
pull-request: bpf 2020-05-22
The following pull-request contains BPF updates for your *net* tree.
We've added 3 non-merge commits during the last 3 day(s) which contain
a total of 5 files changed, 69 insertions(+), 11 deletions(-).
The main changes are:
1) Fix to reject mmap()'ing read-only array maps as writable since BPF verifier
relies on such map content to be frozen, from Andrii Nakryiko.
2) Fix breaking audit from secid_to_secctx() LSM hook by avoiding to use
call_int_hook() since this hook is not stackable, from KP Singh.
3) Fix BPF flow dissector program ref leak on netns cleanup, from Jakub Sitnicki.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
The caller of devm_ioremap_resource(), either accidentally
or by wrong assumption, is writing back derived resource data
to global static resource initialization tables that should
have been constant. Meaning that after it computes the final
physical start address it saves the address for no reason
in the static tables. This doesn't affect the first driver
probing after reboot, but it breaks consecutive driver reloads
(i.e. driver unbind & bind) because the initialization tables
no longer have the correct initial values. So the next probe()
will map the device registers to wrong physical addresses,
causing ARM SError async exceptions.
This patch fixes all of the above.
Fixes: 5605194877 ("net: dsa: ocelot: add driver for Felix switch family")
Signed-off-by: Claudiu Manoil <claudiu.manoil@nxp.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Tested-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
There is some ambiguity in the RFC as to whether the ADD_ADDR HMAC is
the rightmost 64 bits of the entire hash or of the leftmost 160 bits
of the hash. The intention, as clarified with the author of the RFC,
is the entire hash.
This change returns the entire hash from
mptcp_crypto_hmac_sha (instead of only the first 160 bits), and moves
any truncation/selection operation on the hash to the caller.
Fixes: 12555a2d97 ("mptcp: use rightmost 64 bits in ADD_ADDR HMAC")
Reviewed-by: Christoph Paasch <cpaasch@apple.com>
Reviewed-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Todd Malsbary <todd.malsbary@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Merge tag 'io_uring-5.7-2020-05-22' of git://git.kernel.dk/linux-block
Pull io_uring fixes from Jens Axboe:
"A small collection of small fixes that should go into this release:
- Two fixes for async request preparation (Pavel)
- Busy clear fix for SQPOLL (Xiaoguang)
- Don't use kiocb->private for O_DIRECT buf index, some file systems
use it (Bijan)
- Kill dead check in io_splice()
- Ensure sqo_wait is initialized early
- Cancel task_work if we fail adding to original process
- Only add (IO)pollable requests to iopoll list, fixing a regression
in this merge window"
* tag 'io_uring-5.7-2020-05-22' of git://git.kernel.dk/linux-block:
io_uring: reset -EBUSY error when io sq thread is waken up
io_uring: don't add non-IO requests to iopoll pending list
io_uring: don't use kiocb.private to store buf_index
io_uring: cancel work if task_work_add() fails
io_uring: remove dead check in io_splice()
io_uring: fix FORCE_ASYNC req preparation
io_uring: don't prepare DRAIN reqs twice
io_uring: initialize ctx->sqo_wait earlier
This tag contains two fixes:
* Another !MMU build fix that was a straggler from last week.
* A fix to use the "register" keyword for the GP global register variable.
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Merge tag 'riscv-for-linus-5.7-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux
Pull RISC-V fixes from Palmer Dabbelt:
"Two fixes:
- Another !MMU build fix that was a straggler from last week
- A fix to use the "register" keyword for the GP global register
variable"
* tag 'riscv-for-linus-5.7-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux:
RISC-V: gp_in_global needs register keyword
riscv: Fix print_vm_layout build error if NOMMU
- fix EFI framebuffer earlycon for wide fonts
- avoid filling screen_info with garbage if the EFI framebuffer is not
available
- fix a potential host tool build error due to a symbol clash on x86
- work around a EFI firmware bug regarding the binary format of the TPM
final events table
- fix a missing memory free by reworking the E820 table sizing routine to
not do the allocation in the first place
- add CPER parsing for firmware errors
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Merge tag 'efi-fixes-for-v5.7-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/efi/efi into efi/urgent
Pull EFI fixes from Ard Biesheuvel:
"- fix EFI framebuffer earlycon for wide fonts
- avoid filling screen_info with garbage if the EFI framebuffer is not
available
- fix a potential host tool build error due to a symbol clash on x86
- work around a EFI firmware bug regarding the binary format of the TPM
final events table
- fix a missing memory free by reworking the E820 table sizing routine to
not do the allocation in the first place
- add CPER parsing for firmware errors"
