Add documentation to describe the access to the pmu hardware counters from
userspace.
Signed-off-by: Raphael Gault <raphael.gault@arm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211208201124.310740-6-robh@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
Arm PMUs can support direct userspace access of counters which allows for
low overhead (i.e. no syscall) self-monitoring of tasks. The same feature
exists on x86 called 'rdpmc'. Unlike x86, userspace access will only be
enabled for thread bound events. This could be extended if needed, but
simplifies the implementation and reduces the chances for any
information leaks (which the x86 implementation suffers from).
PMU EL0 access will be enabled when an event with userspace access is
part of the thread's context. This includes when the event is not
scheduled on the PMU. There's some additional overhead clearing
dirty counters when access is enabled in order to prevent leaking
disabled counter data from other tasks.
Unlike x86, enabling of userspace access must be requested with a new
attr bit: config1:1. If the user requests userspace access with 64-bit
counters, then the event open will fail if the h/w doesn't support
64-bit counters. Chaining is not supported with userspace access. The
modes for config1 are as follows:
config1 = 0 : user access disabled and always 32-bit
config1 = 1 : user access disabled and always 64-bit (using chaining if needed)
config1 = 2 : user access enabled and always 32-bit
config1 = 3 : user access enabled and always 64-bit
Based on work by Raphael Gault <raphael.gault@arm.com>, but has been
completely re-written.
Cc: Will Deacon <will@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-perf-users@vger.kernel.org
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211208201124.310740-5-robh@kernel.org
[will: Made armv8pmu_proc_user_access_handler() static]
Signed-off-by: Will Deacon <will@kernel.org>
Like x86, some users may want to disable userspace PMU counter
altogether. Add a sysctl 'perf_user_access' file to control userspace
counter access. The default is '0' which is disabled. Writing '1'
enables access.
Note that x86 supports globally enabling user access by writing '2' to
/sys/bus/event_source/devices/cpu/rdpmc. As there's not existing
userspace support to worry about, this shouldn't be necessary for Arm.
It could be added later if the need arises.
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: linux-perf-users@vger.kernel.org
Acked-by: Will Deacon <will@kernel.org>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211208201124.310740-4-robh@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
On arm64, user space counter access will be controlled differently
compared to x86. On x86, access in the strictest mode is enabled for all
tasks in an MM when any event is mmap'ed. For arm64, access is
explicitly requested for an event and only enabled when the event's
context is active. This avoids hooks into the arch context switch code
and gives better control of when access is enabled.
In order to configure user space access when the PMU is enabled, it is
necessary to know if any event (currently active or not) in the current
context has user space accessed enabled. Add a counter similar to other
counters in the context to avoid walking the event list every time.
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211208201124.310740-3-robh@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
In preparation to enable user counter access on arm64 and to move some
of the user access handling to perf core, create a common event flag for
user counter access and convert x86 to use it.
Since the architecture specific flags start at the LSB, starting at the
MSB for common flags.
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: x86@kernel.org
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: linux-perf-users@vger.kernel.org
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Rob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20211208201124.310740-2-robh@kernel.org
Signed-off-by: Will Deacon <will@kernel.org>
Misc fixes all over the place.
Revert of virtio used length validation series: the approach taken does
not seem to work, breaking too many guests in the process. We'll need to
do length validation using some other approach.
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
-----BEGIN PGP SIGNATURE-----
iQFDBAABCAAtFiEEXQn9CHHI+FuUyooNKB8NuNKNVGkFAmGe0sEPHG1zdEByZWRo
YXQuY29tAAoJECgfDbjSjVRp8WEH/imDIq1iduDeAuvFnmrm5eEO9w3wzXCT4NiG
8Pla241FzQ1pEFEAne16KP0+SlLhj7P0oc5FR8vkYvxxuyneDbCzcS2M1kYMOpA1
ry28PuObAnekzE/WXxvC031ozB5Zb/FL54gmw+/1EdAOdMGL0CdQ1aJxREBHRTBo
p4ZHr83GA2D2C/IyKCsgQ8cB9ZrMqImTQQ4vRD89HoFBp+GH2u2Di1iyXEWuOqdI
n1+7M9jjbyW8A+N1bkOicpShS/6UcyJQOOcg8kvUQOV6srVkYhfaiWC/CbOP2g73
8PKK+/K2Htf92s6RdvDUPSKmvqGR/4KPZWPtWThXBYXGgWul0uI=
=q6tO
-----END PGP SIGNATURE-----
Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
Pull vhost,virtio,vdpa bugfixes from Michael Tsirkin:
"Misc fixes all over the place.
Revert of virtio used length validation series: the approach taken
does not seem to work, breaking too many guests in the process. We'll
need to do length validation using some other approach"
[ This merge also ends up reverting commit f7a36b03a7 ("vsock/virtio:
suppress used length validation"), which came in through the
networking tree in the meantime, and was part of that whole used
length validation series - Linus ]
* tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost:
vdpa_sim: avoid putting an uninitialized iova_domain
vhost-vdpa: clean irqs before reseting vdpa device
virtio-blk: modify the value type of num in virtio_queue_rq()
vhost/vsock: cleanup removing `len` variable
vhost/vsock: fix incorrect used length reported to the guest
Revert "virtio_ring: validate used buffer length"
Revert "virtio-net: don't let virtio core to validate used length"
Revert "virtio-blk: don't let virtio core to validate used length"
Revert "virtio-scsi: don't let virtio core to validate used buffer length"
-----BEGIN PGP SIGNATURE-----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=QG5U
-----END PGP SIGNATURE-----
Merge tag 'x86-urgent-2021-11-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 build fix from Thomas Gleixner:
"A single fix for a missing __init annotation of prepare_command_line()"
* tag 'x86-urgent-2021-11-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/boot: Mark prepare_command_line() __init
left on the idle task's stack when a CPU is brought up after it was brought
down before.
-----BEGIN PGP SIGNATURE-----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=ne0K
-----END PGP SIGNATURE-----
Merge tag 'sched-urgent-2021-11-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fix from Thomas Gleixner:
"A single scheduler fix to ensure that there is no stale KASAN shadow
state left on the idle task's stack when a CPU is brought up after it
was brought down before"
* tag 'sched-urgent-2021-11-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched/scs: Reset task stack state in bringup_cpu()
a trace point event as it's not possible to deliver a synchronous signal to
a different task from there.
-----BEGIN PGP SIGNATURE-----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=yMum
-----END PGP SIGNATURE-----
Merge tag 'perf-urgent-2021-11-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fix from Thomas Gleixner:
"A single fix for perf to prevent it from sending SIGTRAP to another
task from a trace point event as it's not possible to deliver a
synchronous signal to a different task from there"
* tag 'perf-urgent-2021-11-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf: Ignore sigtrap for tracepoints destined for other tasks
- Plug a race in the lock handoff which is caused by inconsistency of the
reader and writer path and can lead to corruption of the underlying
counter.
- down_read_trylock() is suboptimal when the lock is contended and
multiple readers trylock concurrently. That's due to the initial value
being read non-atomically which results in at least two compare exchange
loops. Making the initial readout atomic reduces this significantly.
Whith 40 readers by 11% in a benchmark which enforces contention on
mmap_sem.
-----BEGIN PGP SIGNATURE-----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=dKz+
-----END PGP SIGNATURE-----
Merge tag 'locking-urgent-2021-11-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fixes from Thomas Gleixner:
"Two regression fixes for reader writer semaphores:
- Plug a race in the lock handoff which is caused by inconsistency of
the reader and writer path and can lead to corruption of the
underlying counter.
- down_read_trylock() is suboptimal when the lock is contended and
multiple readers trylock concurrently. That's due to the initial
value being read non-atomically which results in at least two
compare exchange loops. Making the initial readout atomic reduces
this significantly. Whith 40 readers by 11% in a benchmark which
enforces contention on mmap_sem"
* tag 'locking-urgent-2021-11-28' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
locking/rwsem: Optimize down_read_trylock() under highly contended case
locking/rwsem: Make handoff bit handling more consistent
- The setting of the pid filtering flag tested the "trace only this
pid" case twice, and ignored the "trace everything but this pid" case.
Note, the 5.15 kernel does things a little differently due to the new
sparse pid mask introduced in 5.16, and as the bug was discovered
running the 5.15 kernel, and the first fix was initially done for
that kernel, that fix handled both cases (only pid and all but pid),
but the forward port to 5.16 created this bug.
-----BEGIN PGP SIGNATURE-----
iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCYaOnPxQccm9zdGVkdEBn
b29kbWlzLm9yZwAKCRAp5XQQmuv6qqUTAP9KCOe2rZBjbn14xiCm/wbECjox58Uf
PrJ3fCDBVt8E0gEAjHkR3ybVE4xYLKj4RrO5GJ/pk/x1NeMmHdi+ls5hOQg=
=MZso
-----END PGP SIGNATURE-----
Merge tag 'trace-v5.16-rc2-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull another tracing fix from Steven Rostedt:
"Fix the fix of pid filtering
The setting of the pid filtering flag tested the "trace only this pid"
case twice, and ignored the "trace everything but this pid" case.
The 5.15 kernel does things a little differently due to the new sparse
pid mask introduced in 5.16, and as the bug was discovered running the
5.15 kernel, and the first fix was initially done for that kernel,
that fix handled both cases (only pid and all but pid), but the
forward port to 5.16 created this bug"
* tag 'trace-v5.16-rc2-3' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: Test the 'Do not trace this pid' case in create event
-----BEGIN PGP SIGNATURE-----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=bEt3
-----END PGP SIGNATURE-----
Merge tag '5.16-rc2-ksmbd-fixes' of git://git.samba.org/ksmbd
Pull ksmbd fixes from Steve French:
"Five ksmbd server fixes, four of them for stable:
- memleak fix
- fix for default data stream on filesystems that don't support xattr
- error logging fix
- session setup fix
- minor doc cleanup"
* tag '5.16-rc2-ksmbd-fixes' of git://git.samba.org/ksmbd:
ksmbd: fix memleak in get_file_stream_info()
ksmbd: contain default data stream even if xattr is empty
ksmbd: downgrade addition info error msg to debug in smb2_get_info_sec()
docs: filesystem: cifs: ksmbd: Fix small layout issues
ksmbd: Fix an error handling path in 'smb2_sess_setup()'
Use the architecture independent Kconfig option PAGE_SIZE_LESS_THAN_64KB
to indicate that VMXNET3 requires a page size smaller than 64kB.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
NTFS_RW code allocates page size dependent arrays on the stack. This
results in build failures if the page size is 64k or larger.
fs/ntfs/aops.c: In function 'ntfs_write_mst_block':
fs/ntfs/aops.c:1311:1: error:
the frame size of 2240 bytes is larger than 2048 bytes
Since commit f22969a660 ("powerpc/64s: Default to 64K pages for 64 bit
book3s") this affects ppc:allmodconfig builds, but other architectures
supporting page sizes of 64k or larger are also affected.
Increasing the maximum frame size for affected architectures just to
silence this error does not really help. The frame size would have to
be set to a really large value for 256k pages. Also, a large frame size
could potentially result in stack overruns in this code and elsewhere
and is therefore not desirable. Make NTFS_RW dependent on page sizes
smaller than 64k instead.
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Cc: Anton Altaparmakov <anton@tuxera.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
NTFS_RW and VMXNET3 require a page size smaller than 64kB. Add generic
Kconfig option for use outside architecture code to avoid architecture
specific Kconfig options in that code.
Suggested-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Cc: Anton Altaparmakov <anton@tuxera.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
When creating a new event (via a module, kprobe, eprobe, etc), the
descriptors that are created must add flags for pid filtering if an
instance has pid filtering enabled, as the flags are used at the time the
event is executed to know if pid filtering should be done or not.
The "Only trace this pid" case was added, but a cut and paste error made
that case checked twice, instead of checking the "Trace all but this pid"
case.
Link: https://lore.kernel.org/all/202111280401.qC0z99JB-lkp@intel.com/
Fixes: 6cb206508b ("tracing: Check pid filtering when creating events")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
- Fix buffer resource leak that could lead to livelock on corrupt fs.
- Remove unused function xfs_inew_wait to shut up the build robots.
-----BEGIN PGP SIGNATURE-----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=Fa6X
-----END PGP SIGNATURE-----
Merge tag 'xfs-5.16-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull xfs fixes from Darrick Wong:
"Fixes for a resource leak and a build robot complaint about totally
dead code:
- Fix buffer resource leak that could lead to livelock on corrupt fs.
- Remove unused function xfs_inew_wait to shut up the build robots"
* tag 'xfs-5.16-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
xfs: remove xfs_inew_wait
xfs: Fix the free logic of state in xfs_attr_node_hasname
- Fix an accounting problem where unaligned inline data reads can run
off the end of the read iomap iterator. iomap has historically
required that inline data mappings only exist at the end of a file,
though this wasn't documented anywhere.
- Document iomap_read_inline_data and change its return type to be
appropriate for the information that it's actually returning.
-----BEGIN PGP SIGNATURE-----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=hIEG
-----END PGP SIGNATURE-----
Merge tag 'iomap-5.16-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux
Pull iomap fixes from Darrick Wong:
"A single iomap bug fix and a cleanup for 5.16-rc2.
The bug fix changes how iomap deals with reading from an inline data
region -- whereas the current code (incorrectly) lets the iomap read
iter try for more bytes after reading the inline region (which zeroes
the rest of the page!) and hopes the next iteration terminates, we
surveyed the inlinedata implementations and realized that all
inlinedata implementations also require that the inlinedata region end
at EOF, so we can simply terminate the read.
The second patch documents these assumptions in the code so that
they're not subtle implications anymore, and cleans up some of the
grosser parts of that function.
Summary:
- Fix an accounting problem where unaligned inline data reads can run
off the end of the read iomap iterator. iomap has historically
required that inline data mappings only exist at the end of a file,
though this wasn't documented anywhere.
- Document iomap_read_inline_data and change its return type to be
appropriate for the information that it's actually returning"
* tag 'iomap-5.16-fixes-1' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux:
iomap: iomap_read_inline_data cleanup
iomap: Fix inline extent handling in iomap_readpage
- Have created events reflect the current state of pid filtering
- Test pid filtering on discard test of recorded logic.
(Also clean up the if statement to be cleaner).
-----BEGIN PGP SIGNATURE-----
iIoEABYIADIWIQRRSw7ePDh/lE+zeZMp5XQQmuv6qgUCYaJ3ZhQccm9zdGVkdEBn
b29kbWlzLm9yZwAKCRAp5XQQmuv6qhusAQC3nj0Xj4LRJXJtH4ALoJuthoBNoRHN
SslcuItuFLheyQD/URecPD2h4O+u/GQs1rjEUJ3B/mdzXojIrTz6Stagkwg=
=QCQF
-----END PGP SIGNATURE-----
Merge tag 'trace-v5.16-rc2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
"Two fixes to event pid filtering:
- Make sure newly created events reflect the current state of pid
filtering
- Take pid filtering into account when recording trigger events.
(Also clean up the if statement to be cleaner)"
* tag 'trace-v5.16-rc2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
tracing: Fix pid filtering when triggers are attached
tracing: Check pid filtering when creating events
-----BEGIN PGP SIGNATURE-----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=h6A3
-----END PGP SIGNATURE-----
Merge tag 'io_uring-5.16-2021-11-27' of git://git.kernel.dk/linux-block
Pull more io_uring fixes from Jens Axboe:
"The locking fixup that was applied earlier this rc has both a deadlock
and IRQ safety issue, let's get that ironed out before -rc3. This
contains:
- Link traversal locking fix (Pavel)
- Cancelation fix (Pavel)
- Relocate cond_resched() for huge buffer chain freeing, avoiding a
softlockup warning (Ye)
- Fix timespec validation (Ye)"
* tag 'io_uring-5.16-2021-11-27' of git://git.kernel.dk/linux-block:
io_uring: Fix undefined-behaviour in io_issue_sqe
io_uring: fix soft lockup when call __io_remove_buffers
io_uring: fix link traversal locking
io_uring: fail cancellation for EXITING tasks
-----BEGIN PGP SIGNATURE-----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=xrY+
-----END PGP SIGNATURE-----
Merge tag 'block-5.16-2021-11-27' of git://git.kernel.dk/linux-block
Pull more block fixes from Jens Axboe:
"Turns out that the flushing out of pending fixes before the
Thanksgiving break didn't quite work out in terms of timing, so here's
a followup set of fixes:
- rq_qos_done() should be called regardless of whether or not we're
the final put of the request, it's not related to the freeing of
the state. This fixes an IO stall with wbt that a few users have
reported, a regression in this release.
- Only define zram_wb_devops if it's used, fixing a compilation
warning for some compilers"
* tag 'block-5.16-2021-11-27' of git://git.kernel.dk/linux-block:
zram: only make zram_wb_devops for CONFIG_ZRAM_WRITEBACK
block: call rq_qos_done() before ref check in batch completions
Twelve fixes, eleven in drivers (target, qla2xx, scsi_debug, mpt3sas,
ufs). The core fix is a minor correction to the previous state update
fix for the iscsi daemons.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
-----BEGIN PGP SIGNATURE-----
iJwEABMIAEQWIQTnYEDbdso9F2cI+arnQslM7pishQUCYaIz7yYcamFtZXMuYm90
dG9tbGV5QGhhbnNlbnBhcnRuZXJzaGlwLmNvbQAKCRDnQslM7pishXbyAQCozhIX
sWfrJJJClKF/1WlDuGIU9hc2hCn/2Cod2wxDLQEAs1FQwNyA++KHys167PJAYkSe
Bayq8IoS9eL8z8ZKt+g=
=+sFg
-----END PGP SIGNATURE-----
Merge tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Twelve fixes, eleven in drivers (target, qla2xx, scsi_debug, mpt3sas,
ufs). The core fix is a minor correction to the previous state update
fix for the iscsi daemons"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: scsi_debug: Zero clear zones at reset write pointer
scsi: core: sysfs: Fix setting device state to SDEV_RUNNING
scsi: scsi_debug: Sanity check block descriptor length in resp_mode_select()
scsi: target: configfs: Delete unnecessary checks for NULL
scsi: target: core: Use RCU helpers for INQUIRY t10_alua_tg_pt_gp
scsi: mpt3sas: Fix incorrect system timestamp
scsi: mpt3sas: Fix system going into read-only mode
scsi: mpt3sas: Fix kernel panic during drive powercycle test
scsi: ufs: ufs-mediatek: Add put_device() after of_find_device_by_node()
scsi: scsi_debug: Fix type in min_t to avoid stack OOB
scsi: qla2xxx: edif: Fix off by one bug in qla_edif_app_getfcinfo()
scsi: ufs: ufshpb: Fix warning in ufshpb_set_hpb_read_to_upiu()
Highlights include:
Stable fixes:
- NFSv42: Fix pagecache invalidation after COPY/CLONE
Bugfixes:
- NFSv42: Don't fail clone() just because the server failed to return
post-op attributes
- SUNRPC: use different lockdep keys for INET6 and LOCAL
- NFSv4.1: handle NFS4ERR_NOSPC from CREATE_SESSION
- SUNRPC: fix header include guard in trace header
-----BEGIN PGP SIGNATURE-----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=jeHm
-----END PGP SIGNATURE-----
Merge tag 'nfs-for-5.16-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Pull NFS client fixes from Trond Myklebust:
"Highlights include:
Stable fixes:
- NFSv42: Fix pagecache invalidation after COPY/CLONE
Bugfixes:
- NFSv42: Don't fail clone() just because the server failed to return
post-op attributes
- SUNRPC: use different lockdep keys for INET6 and LOCAL
- NFSv4.1: handle NFS4ERR_NOSPC from CREATE_SESSION
- SUNRPC: fix header include guard in trace header"
* tag 'nfs-for-5.16-2' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
SUNRPC: use different lock keys for INET6 and LOCAL
sunrpc: fix header include guard in trace header
NFSv4.1: handle NFS4ERR_NOSPC by CREATE_SESSION
NFSv42: Fix pagecache invalidation after COPY/CLONE
NFS: Add a tracepoint to show the results of nfs_set_cache_invalid()
NFSv42: Don't fail clone() unless the OP_CLONE operation failed
- Fix an ABBA deadlock introduced by XArray convention.
-----BEGIN PGP SIGNATURE-----
iIcEABYIAC8WIQThPAmQN9sSA0DVxtI5NzHcH7XmBAUCYaG1ZxEceGlhbmdAa2Vy
bmVsLm9yZwAKCRA5NzHcH7XmBFQqAP0Zk3Nozb1BnXnQ/xGZR+liyTimNlujsWqQ
YtHIwB4EiwEAopRnuZRY00txMqzYZNz3sLEV6ylATbN0i/EJ2brOpA8=
=ZHsQ
-----END PGP SIGNATURE-----
Merge tag 'erofs-for-5.16-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs
Pull erofs fix from Gao Xiang:
"Fix an ABBA deadlock introduced by XArray conversion"
* tag 'erofs-for-5.16-rc3-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/xiang/erofs:
erofs: fix deadlock when shrink erofs slab
Fix KVM using a Power9 instruction on earlier CPUs, which could lead to the host SLB being
incorrectly invalidated and a subsequent host crash.
Fix kernel hardlockup on vmap stack overflow on 32-bit.
Thanks to: Christophe Leroy, Nicholas Piggin, Fabiano Rosas.
-----BEGIN PGP SIGNATURE-----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=MBp+
-----END PGP SIGNATURE-----
Merge tag 'powerpc-5.16-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"Fix KVM using a Power9 instruction on earlier CPUs, which could lead
to the host SLB being incorrectly invalidated and a subsequent host
crash.
Fix kernel hardlockup on vmap stack overflow on 32-bit.
Thanks to Christophe Leroy, Nicholas Piggin, and Fabiano Rosas"
* tag 'powerpc-5.16-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/32: Fix hardlockup on vmap stack overflow
KVM: PPC: Book3S HV: Prevent POWER7/8 TLB flush flushing SLB
We got issue as follows:
================================================================================
UBSAN: Undefined behaviour in ./include/linux/ktime.h:42:14
signed integer overflow:
-4966321760114568020 * 1000000000 cannot be represented in type 'long long int'
CPU: 1 PID: 2186 Comm: syz-executor.2 Not tainted 4.19.90+ #12
Hardware name: linux,dummy-virt (DT)
Call trace:
dump_backtrace+0x0/0x3f0 arch/arm64/kernel/time.c:78
show_stack+0x28/0x38 arch/arm64/kernel/traps.c:158
__dump_stack lib/dump_stack.c:77 [inline]
dump_stack+0x170/0x1dc lib/dump_stack.c:118
ubsan_epilogue+0x18/0xb4 lib/ubsan.c:161
handle_overflow+0x188/0x1dc lib/ubsan.c:192
__ubsan_handle_mul_overflow+0x34/0x44 lib/ubsan.c:213
ktime_set include/linux/ktime.h:42 [inline]
timespec64_to_ktime include/linux/ktime.h:78 [inline]
io_timeout fs/io_uring.c:5153 [inline]
io_issue_sqe+0x42c8/0x4550 fs/io_uring.c:5599
__io_queue_sqe+0x1b0/0xbc0 fs/io_uring.c:5988
io_queue_sqe+0x1ac/0x248 fs/io_uring.c:6067
io_submit_sqe fs/io_uring.c:6137 [inline]
io_submit_sqes+0xed8/0x1c88 fs/io_uring.c:6331
__do_sys_io_uring_enter fs/io_uring.c:8170 [inline]
__se_sys_io_uring_enter fs/io_uring.c:8129 [inline]
__arm64_sys_io_uring_enter+0x490/0x980 fs/io_uring.c:8129
invoke_syscall arch/arm64/kernel/syscall.c:53 [inline]
el0_svc_common+0x374/0x570 arch/arm64/kernel/syscall.c:121
el0_svc_handler+0x190/0x260 arch/arm64/kernel/syscall.c:190
el0_svc+0x10/0x218 arch/arm64/kernel/entry.S:1017
================================================================================
As ktime_set only judge 'secs' if big than KTIME_SEC_MAX, but if we pass
negative value maybe lead to overflow.
To address this issue, we must check if 'sec' is negative.
Signed-off-by: Ye Bin <yebin10@huawei.com>
Link: https://lore.kernel.org/r/20211118015907.844807-1-yebin10@huawei.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
If a event is filtered by pid and a trigger that requires processing of
the event to happen is a attached to the event, the discard portion does
not take the pid filtering into account, and the event will then be
recorded when it should not have been.
Cc: stable@vger.kernel.org
Fixes: 3fdaf80f4a ("tracing: Implement event pid filtering")
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
When supporting only the .map and .unmap callbacks of iommu_ops,
the IOMMU driver can make assumptions about the size and alignment
used for mappings based on the driver provided pgsize_bitmap. VT-d
previously used essentially PAGE_MASK for this bitmap as any power
of two mapping was acceptably filled by native page sizes.
However, with the .map_pages and .unmap_pages interface we're now
getting page-size and count arguments. If we simply combine these
as (page-size * count) and make use of the previous map/unmap
functions internally, any size and alignment assumptions are very
different.
As an example, a given vfio device assignment VM will often create
a 4MB mapping at IOVA pfn [0x3fe00 - 0x401ff]. On a system that
does not support IOMMU super pages, the unmap_pages interface will
ask to unmap 1024 4KB pages at the base IOVA. dma_pte_clear_level()
will recurse down to level 2 of the page table where the first half
of the pfn range exactly matches the entire pte level. We clear the
pte, increment the pfn by the level size, but (oops) the next pte is
on a new page, so we exit the loop an pop back up a level. When we
then update the pfn based on that higher level, we seem to assume
that the previous pfn value was at the start of the level. In this
case the level size is 256K pfns, which we add to the base pfn and
get a results of 0x7fe00, which is clearly greater than 0x401ff,
so we're done. Meanwhile we never cleared the ptes for the remainder
of the range. When the VM remaps this range, we're overwriting valid
ptes and the VT-d driver complains loudly, as reported by the user
report linked below.
The fix for this seems relatively simple, if each iteration of the
loop in dma_pte_clear_level() is assumed to clear to the end of the
level pte page, then our next pfn should be calculated from level_pfn
rather than our working pfn.
Fixes: 3f34f12597 ("iommu/vt-d: Implement map/unmap_pages() iommu_ops callback")
Reported-by: Ajay Garg <ajaygargnsit@gmail.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Tested-by: Giovanni Cabiddu <giovanni.cabiddu@intel.com>
Link: https://lore.kernel.org/all/20211002124012.18186-1-ajaygargnsit@gmail.com/
Link: https://lore.kernel.org/r/163659074748.1617923.12716161410774184024.stgit@omen
Signed-off-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20211126135556.397932-3-baolu.lu@linux.intel.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
With the submission of iommu driver for RK3568 a subtle bug was
introduced: PAGE_DESC_HI_MASK1 and PAGE_DESC_HI_MASK2 have to be
the other way arround - that leads to random errors, especially when
addresses beyond 32 bit are used.
Fix it.
Fixes: c55356c534 ("iommu: rockchip: Add support for iommu v2")
Signed-off-by: Alex Bee <knaerzche@gmail.com>
Tested-by: Peter Geis <pgwipeout@gmail.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Dan Johansen <strit@manjaro.org>
Reviewed-by: Benjamin Gaignard <benjamin.gaignard@collabora.com>
Link: https://lore.kernel.org/r/20211124021325.858139-1-knaerzche@gmail.com
Signed-off-by: Joerg Roedel <jroedel@suse.de>
The macro is unused after commit 00ecd54013 so it can be removed.
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Fixes: 00ecd54013 ("iommu/vt-d: Clean up unused PASID updating functions")
Signed-off-by: Joerg Roedel <jroedel@suse.de>
Reviewed-by: Lu Baolu <baolu.lu@linux.intel.com>
Link: https://lore.kernel.org/r/20211123105507.7654-2-joro@8bytes.org
Current release - regressions:
- r8169: fix incorrect mac address assignment
- vlan: fix underflow for the real_dev refcnt when vlan creation fails
- smc: avoid warning of possible recursive locking
Current release - new code bugs:
- vsock/virtio: suppress used length validation
- neigh: fix crash in v6 module initialization error path
Previous releases - regressions:
- af_unix: fix change in behavior in read after shutdown
- igb: fix netpoll exit with traffic, avoid warning
- tls: fix splice_read() when starting mid-record
- lan743x: fix deadlock in lan743x_phy_link_status_change()
- marvell: prestera: fix bridge port operation
Previous releases - always broken:
- tcp_cubic: fix spurious Hystart ACK train detections for
not-cwnd-limited flows
- nexthop: fix refcount issues when replacing IPv6 groups
- nexthop: fix null pointer dereference when IPv6 is not enabled
- phylink: force link down and retrigger resolve on interface change
- mptcp: fix delack timer length calculation and incorrect early
clearing
- ieee802154: handle iftypes as u32, prevent shift-out-of-bounds
- nfc: virtual_ncidev: change default device permissions
- netfilter: ctnetlink: fix error codes and flags used for kernel side
filtering of dumps
- netfilter: flowtable: fix IPv6 tunnel addr match
- ncsi: align payload to 32-bit to fix dropped packets
- iavf: fix deadlock and loss of config during VF interface reset
- ice: avoid bpf_prog refcount underflow
- ocelot: fix broken PTP over IP and PTP API violations
Misc:
- marvell: mvpp2: increase MTU limit when XDP enabled
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
-----BEGIN PGP SIGNATURE-----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=LtZ7
-----END PGP SIGNATURE-----
Merge tag 'net-5.16-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Pull networking fixes from Jakub Kicinski:
"Networking fixes, including fixes from netfilter.
Current release - regressions:
- r8169: fix incorrect mac address assignment
- vlan: fix underflow for the real_dev refcnt when vlan creation
fails
- smc: avoid warning of possible recursive locking
Current release - new code bugs:
- vsock/virtio: suppress used length validation
- neigh: fix crash in v6 module initialization error path
Previous releases - regressions:
- af_unix: fix change in behavior in read after shutdown
- igb: fix netpoll exit with traffic, avoid warning
- tls: fix splice_read() when starting mid-record
- lan743x: fix deadlock in lan743x_phy_link_status_change()
- marvell: prestera: fix bridge port operation
Previous releases - always broken:
- tcp_cubic: fix spurious Hystart ACK train detections for
not-cwnd-limited flows
- nexthop: fix refcount issues when replacing IPv6 groups
- nexthop: fix null pointer dereference when IPv6 is not enabled
- phylink: force link down and retrigger resolve on interface change
- mptcp: fix delack timer length calculation and incorrect early
clearing
- ieee802154: handle iftypes as u32, prevent shift-out-of-bounds
- nfc: virtual_ncidev: change default device permissions
- netfilter: ctnetlink: fix error codes and flags used for kernel
side filtering of dumps
- netfilter: flowtable: fix IPv6 tunnel addr match
- ncsi: align payload to 32-bit to fix dropped packets
- iavf: fix deadlock and loss of config during VF interface reset
- ice: avoid bpf_prog refcount underflow
- ocelot: fix broken PTP over IP and PTP API violations
Misc:
- marvell: mvpp2: increase MTU limit when XDP enabled"
* tag 'net-5.16-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (94 commits)
net: dsa: microchip: implement multi-bridge support
net: mscc: ocelot: correctly report the timestamping RX filters in ethtool
net: mscc: ocelot: set up traps for PTP packets
net: ptp: add a definition for the UDP port for IEEE 1588 general messages
net: mscc: ocelot: create a function that replaces an existing VCAP filter
net: mscc: ocelot: don't downgrade timestamping RX filters in SIOCSHWTSTAMP
net: hns3: fix incorrect components info of ethtool --reset command
net: hns3: fix one incorrect value of page pool info when queried by debugfs
net: hns3: add check NULL address for page pool
net: hns3: fix VF RSS failed problem after PF enable multi-TCs
net: qed: fix the array may be out of bound
net/smc: Don't call clcsock shutdown twice when smc shutdown
net: vlan: fix underflow for the real_dev refcnt
ptp: fix filter names in the documentation
ethtool: ioctl: fix potential NULL deref in ethtool_set_coalesce()
nfc: virtual_ncidev: change default device permissions
net/sched: sch_ets: don't peek at classes beyond 'nbands'
net: stmmac: Disable Tx queues when reconfiguring the interface
selftests: tls: test for correct proto_ops
tls: fix replacing proto_ops
...
Current driver version is able to handle only one bridge at time.
Configuring two bridges on two different ports would end up shorting this
bridges by HW. To reproduce it:
ip l a name br0 type bridge
ip l a name br1 type bridge
ip l s dev br0 up
ip l s dev br1 up
ip l s lan1 master br0
ip l s dev lan1 up
ip l s lan2 master br1
ip l s dev lan2 up
Ping on lan1 and get response on lan2, which should not happen.
This happened, because current driver version is storing one global "Port VLAN
Membership" and applying it to all ports which are members of any
bridge.
To solve this issue, we need to handle each port separately.
This patch is dropping the global port member storage and calculating
membership dynamically depending on STP state and bridge participation.
Note: STP support was broken before this patch and should be fixed
separately.
Fixes: c2e866911e ("net: dsa: microchip: break KSZ9477 DSA driver into two files")
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://lore.kernel.org/r/20211126123926.2981028-1-o.rempel@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
- Fix NULL pointer dereference in the CPPC library code occuring
on hybrid systems without CPPC support (Rafael Wysocki).
- Avoid attempts to acquire a semaphore with interrupts off when
printing the names of ACPI device nodes and clean up code on
top of that fix (Sakari Ailus).
-----BEGIN PGP SIGNATURE-----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=yXqv
-----END PGP SIGNATURE-----
Merge tag 'acpi-5.16-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fixes from Rafael Wysocki:
"These fix a NULL pointer dereference in the CPPC library code and a
locking issue related to printing the names of ACPI device nodes in
the device properties framework.
Specifics:
- Fix NULL pointer dereference in the CPPC library code occuring on
hybrid systems without CPPC support (Rafael Wysocki).
- Avoid attempts to acquire a semaphore with interrupts off when
printing the names of ACPI device nodes and clean up code on top of
that fix (Sakari Ailus)"
* tag 'acpi-5.16-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: CPPC: Add NULL pointer check to cppc_get_perf()
ACPI: Make acpi_node_get_parent() local
ACPI: Get acpi_device's parent from the parent field
- Make intel_pstate work correctly on Ice Lake server systems with
out-of-band performance control enabled (Adamos Ttofari).
- Fix EPP handling in intel_pstate during CPU offline and online in
the active mode (Rafael Wysocki).
- Make intel_pstate support ITMT on asymmetric systems with
overclocking enabled (Srinivas Pandruvada).
- Fix hibernation image saving when using the user space interface
based on the snapshot special device file (Evan Green).
- Make the hibernation code release the snapshot block device using
the same mode that was used when acquiring it (Thomas Zeitlhofer).
-----BEGIN PGP SIGNATURE-----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=JN2D
-----END PGP SIGNATURE-----
Merge tag 'pm-5.16-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"These address three issues in the intel_pstate driver and fix two
problems related to hibernation.
Specifics:
- Make intel_pstate work correctly on Ice Lake server systems with
out-of-band performance control enabled (Adamos Ttofari).
- Fix EPP handling in intel_pstate during CPU offline and online in
the active mode (Rafael Wysocki).
- Make intel_pstate support ITMT on asymmetric systems with
overclocking enabled (Srinivas Pandruvada).
- Fix hibernation image saving when using the user space interface
based on the snapshot special device file (Evan Green).
- Make the hibernation code release the snapshot block device using
the same mode that was used when acquiring it (Thomas Zeitlhofer)"
* tag 'pm-5.16-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PM: hibernate: Fix snapshot partial write lengths
PM: hibernate: use correct mode for swsusp_close()
cpufreq: intel_pstate: ITMT support for overclocked system
cpufreq: intel_pstate: Fix active mode offline/online EPP handling
cpufreq: intel_pstate: Add Ice Lake server to out-of-band IDs
-----BEGIN PGP SIGNATURE-----
iHUEABYIAB0WIQSQHSd0lITzzeNWNm3h3BK/laaZPAUCYZ+ZHwAKCRDh3BK/laaZ
PFcKAQC/1E+WRv8MT7BmtS3FBnnuH0hSBJe5KTVL+sQI72NC2AD/eKeX3FKXpimt
C3hrTAEegduHSRNMCZn+4juHZGFRtAw=
=n755
-----END PGP SIGNATURE-----
Merge tag 'fuse-fixes-5.16-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse
Pull fuse fix from Miklos Szeredi:
"Fix a regression caused by a bugfix in the previous release. The
symptom is a VM_BUG_ON triggered from splice to the fuse device.
Unfortunately the original bugfix was already backported to a number
of stable releases, so this fix-fix will need to be backported as
well"
* tag 'fuse-fixes-5.16-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse:
fuse: release pipe buf after last use
Vladimir Oltean says:
====================
Fix broken PTP over IP on Ocelot switches
Changes in v2: added patch 5, added Richard's ack for the whole series
sans patch 5 which is new.
Po Liu reported recently that timestamping PTP over IPv4 is broken using
the felix driver on NXP LS1028A. This has been known for a while, of
course, since it has always been broken. The reason is because IP PTP
packets are currently treated as unknown IP multicast, which is not
flooded to the CPU port in the ocelot driver design, so packets don't
reach the ptp4l program.
The series solves the problem by installing packet traps per port when
the timestamping ioctl is called, depending on the RX filter selected
(L2, L4 or both).
====================
Link: https://lore.kernel.org/r/20211126172845.3149260-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The driver doesn't support RX timestamping for non-PTP packets, but it
declares that it does. Restrict the reported RX filters to PTP v2 over
L2 and over L4.
Fixes: 4e3b0468e6 ("net: mscc: PTP Hardware Clock (PHC) support")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
IEEE 1588 support was declared too soon for the Ocelot switch. Out of
reset, this switch does not apply any special treatment for PTP packets,
i.e. when an event message is received, the natural tendency is to
forward it by MAC DA/VLAN ID. This poses a problem when the ingress port
is under a bridge, since user space application stacks (written
primarily for endpoint ports, not switches) like ptp4l expect that PTP
messages are always received on AF_PACKET / AF_INET sockets (depending
on the PTP transport being used), and never being autonomously
forwarded. Any forwarding, if necessary (for example in Transparent
Clock mode) is handled in software by ptp4l. Having the hardware forward
these packets too will cause duplicates which will confuse endpoints
connected to these switches.
So PTP over L2 barely works, in the sense that PTP packets reach the CPU
port, but they reach it via flooding, and therefore reach lots of other
unwanted destinations too. But PTP over IPv4/IPv6 does not work at all.
This is because the Ocelot switch have a separate destination port mask
for unknown IP multicast (which PTP over IP is) flooding compared to
unknown non-IP multicast (which PTP over L2 is) flooding. Specifically,
the driver allows the CPU port to be in the PGID_MC port group, but not
in PGID_MCIPV4 and PGID_MCIPV6. There are several presentations from
Allan Nielsen which explain that the embedded MIPS CPU on Ocelot
switches is not very powerful at all, so every penny they could save by
not allowing flooding to the CPU port module matters. Unknown IP
multicast did not make it.
The de facto consensus is that when a switch is PTP-aware and an
application stack for PTP is running, switches should have some sort of
trapping mechanism for PTP packets, to extract them from the hardware
data path. This avoids both problems:
(a) PTP packets are no longer flooded to unwanted destinations
(b) PTP over IP packets are no longer denied from reaching the CPU since
they arrive there via a trap and not via flooding
It is not the first time when this change is attempted. Last time, the
feedback from Allan Nielsen and Andrew Lunn was that the traps should
not be installed by default, and that PTP-unaware switching may be
desired for some use cases:
https://patchwork.ozlabs.org/project/netdev/patch/20190813025214.18601-5-yangbo.lu@nxp.com/
To address that feedback, the present patch adds the necessary packet
traps according to the RX filter configuration transmitted by user space
through the SIOCSHWTSTAMP ioctl. Trapping is done via VCAP IS2, where we
keep 5 filters, which are amended each time RX timestamping is enabled
or disabled on a port:
- 1 for PTP over L2
- 2 for PTP over IPv4 (UDP ports 319 and 320)
- 2 for PTP over IPv6 (UDP ports 319 and 320)
The cookie by which these filters (invisible to tc) are identified is
strategically chosen such that it does not collide with the filters used
for the ocelot-8021q tagging protocol by the Felix driver, or with the
MRP traps set up by the Ocelot library.
Other alternatives were considered, like patching user space to do
something, but there are so many ways in which PTP packets could be made
to reach the CPU, generically speaking, that "do what?" is a very valid
question. The ptp4l program from the linuxptp stack already attempts to
do something: it calls setsockopt(IP_ADD_MEMBERSHIP) (and
PACKET_ADD_MEMBERSHIP, respectively) which translates in both cases into
a dev_mc_add() on the interface, in the kernel:
https://github.com/richardcochran/linuxptp/blob/v3.1.1/udp.c#L73https://github.com/richardcochran/linuxptp/blob/v3.1.1/raw.c
Reality shows that this is not sufficient in case the interface belongs
to a switchdev driver, as dev_mc_add() does not show the intention to
trap a packet to the CPU, but rather the intention to not drop it (it is
strictly for RX filtering, same as promiscuous does not mean to send all
traffic to the CPU, but to not drop traffic with unknown MAC DA). This
topic is a can of worms in itself, and it would be great if user space
could just stay out of it.
On the other hand, setting up PTP traps privately within the driver is
not new by any stretch of the imagination:
https://elixir.bootlin.com/linux/v5.16-rc2/source/drivers/net/ethernet/mellanox/mlxsw/spectrum_ptp.c#L833https://elixir.bootlin.com/linux/v5.16-rc2/source/drivers/net/dsa/hirschmann/hellcreek.c#L1050https://elixir.bootlin.com/linux/v5.16-rc2/source/include/linux/dsa/sja1105.h#L21
So this is the approach taken here as well. The difference here being
that we prepare and destroy the traps per port, dynamically at runtime,
as opposed to driver init time, because apparently, PTP-unaware
forwarding is a use case.
Fixes: 4e3b0468e6 ("net: mscc: PTP Hardware Clock (PHC) support")
Reported-by: Po Liu <po.liu@nxp.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
As opposed to event messages (Sync, PdelayReq etc) which require
timestamping, general messages (Announce, FollowUp etc) do not.
In PTP they are part of different streams of data.
IEEE 1588-2008 Annex D.2 "UDP port numbers" states that the UDP
destination port assigned by IANA is 319 for event messages, and 320 for
general messages. Yet the kernel seems to be missing the definition for
general messages. This patch adds it.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
VCAP (Versatile Content Aware Processor) is the TCAM-based engine behind
tc flower offload on ocelot, among other things. The ingress port mask
on which VCAP rules match is present as a bit field in the actual key of
the rule. This means that it is possible for a rule to be shared among
multiple source ports. When the rule is added one by one on each desired
port, that the ingress port mask of the key must be edited and rewritten
to hardware.
But the API in ocelot_vcap.c does not allow for this. For one thing,
ocelot_vcap_filter_add() and ocelot_vcap_filter_del() are not symmetric,
because ocelot_vcap_filter_add() works with a preallocated and
prepopulated filter and programs it to hardware, and
ocelot_vcap_filter_del() does both the job of removing the specified
filter from hardware, as well as kfreeing it. That is to say, the only
option of editing a filter in place, which is to delete it, modify the
structure and add it back, does not work because it results in
use-after-free.
This patch introduces ocelot_vcap_filter_replace, which trivially
reprograms a VCAP entry to hardware, at the exact same index at which it
existed before, without modifying any list or allocating any memory.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
The ocelot driver, when asked to timestamp all receiving packets, 1588
v1 or NTP, says "nah, here's 1588 v2 for you".
According to this discussion:
https://patchwork.kernel.org/project/netdevbpf/patch/20211104133204.19757-8-martin.kaistra@linutronix.de/#24577647
drivers that downgrade from a wider request to a narrower response (or
even a response where the intersection with the request is empty) are
buggy, and should return -ERANGE instead. This patch fixes that.
Fixes: 4e3b0468e6 ("net: mscc: PTP Hardware Clock (PHC) support")
Suggested-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Currently, HNS3 driver doesn't clear the reset flags of components after
successfully executing reset, it causes userspace info of
"Components reset" and "Components not reset" is incorrect.
So fix this problem by clear corresponding reset flag after reset process.
Fixes: ddccc5e368 ("net: hns3: add support for triggering reset by ethtool")
Signed-off-by: Jie Wang <wangjie125@huawei.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Currently, when user queries page pool info by debugfs command
"cat page_pool_info", the cnt of allocated page for page pool may be
incorrect because of memory inconsistency problem caused by compiler
optimization.
So this patch uses READ_ONCE() to read value of pages_state_hold_cnt to
fix this problem.
Fixes: 850bfb912a ("net: hns3: debugfs add support dumping page pool info")
Signed-off-by: Hao Chen <chenhao288@hisilicon.com>
Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
