Give reduced sleeper credit to SCHED_IDLE entities. As a result, woken
SCHED_IDLE entities will take longer to preempt normal entities.
The benefit of this change is to make it less likely that a newly woken
SCHED_IDLE entity will preempt a short-running normal entity before it
blocks.
We still give a small sleeper credit to SCHED_IDLE entities, so that
idle<->idle competition retains some fairness.
Example: With HZ=1000, spawned four threads affined to one cpu, one of
which was set to SCHED_IDLE. Without this patch, wakeup latency for the
SCHED_IDLE thread was ~1-2ms, with the patch the wakeup latency was
~5ms.
Signed-off-by: Josh Don <joshdon@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Vincent Guittot <vincent.guittot@linaro.org>
Reviewed-by: Jiang Biao <benbjiang@tencent.com>
Link: https://lore.kernel.org/r/20210820010403.946838-5-joshdon@google.com
Use a small, non-scaled min granularity for SCHED_IDLE entities, when
competing with normal entities. This reduces the latency of getting
a normal entity back on cpu, at the expense of increased context
switch frequency of SCHED_IDLE entities.
The benefit of this change is to reduce the round-robin latency for
normal entities when competing with a SCHED_IDLE entity.
Example: on a machine with HZ=1000, spawned two threads, one of which is
SCHED_IDLE, and affined to one cpu. Without this patch, the SCHED_IDLE
thread runs for 4ms then waits for 1.4s. With this patch, it runs for
1ms and waits 340ms (as it round-robins with the other thread).
Signed-off-by: Josh Don <joshdon@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Vincent Guittot <vincent.guittot@linaro.org>
Link: https://lore.kernel.org/r/20210820010403.946838-4-joshdon@google.com
Adds cfs_rq->idle_nr_running, which accounts the number of idle entities
directly enqueued on the cfs_rq.
Signed-off-by: Josh Don <joshdon@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Vincent Guittot <vincent.guittot@linaro.org>
Link: https://lore.kernel.org/r/20210820010403.946838-3-joshdon@google.com
/proc/uptime reports idle time by reading the CPUTIME_IDLE field from
the per-cpu kcpustats. However, on NO_HZ systems, idle time is not
continually updated on idle cpus, leading this value to appear
incorrectly small.
/proc/stat performs an accounting update when reading idle time; we
can use the same approach for uptime.
With this patch, /proc/stat and /proc/uptime now agree on idle time.
Additionally, the following shows idle time tick up consistently on an
idle machine:
(while true; do cat /proc/uptime; sleep 1; done) | awk '{print $2-prev; prev=$2}'
Reported-by: Luigi Rizzo <lrizzo@google.com>
Signed-off-by: Josh Don <joshdon@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Link: https://lkml.kernel.org/r/20210827165438.3280779-1-joshdon@google.com
Tao suggested a two-pass task selection to avoid the retry loop.
Not only does it avoid the retry loop, it results in *much* simpler
code.
This also fixes an issue spotted by Josh Don where, for SMT3+, we can
forget to update max on the first pass and get to do an extra round.
Suggested-by: Tao Zhou <tao.zhou@linux.dev>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Josh Don <joshdon@google.com>
Reviewed-by: Vineeth Pillai (Microsoft) <vineethrp@gmail.com>
Link: https://lkml.kernel.org/r/YSS9+k1teA9oPEKl@hirez.programming.kicks-ass.net
With PREEMPT_RT enabled all hrtimers callbacks will be invoked in
softirq mode unless they are explicitly marked as HRTIMER_MODE_HARD.
During boot kthread_bind() is used for the creation of per-CPU threads
and then hangs in wait_task_inactive() if the ksoftirqd is not
yet up and running.
The hang disappeared since commit
26c7295be0 ("kthread: Do not preempt current task if it is going to call schedule()")
but enabling function trace on boot reliably leads to the freeze on boot
behaviour again.
The timer in wait_task_inactive() can not be directly used by a user
interface to abuse it and create a mass wake up of several tasks at the
same time leading to long sections with disabled interrupts.
Therefore it is safe to make the timer HRTIMER_MODE_REL_HARD.
Switch the timer to HRTIMER_MODE_REL_HARD.
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20210826170408.vm7rlj7odslshwch@linutronix.de
Consider a system with some NOHZ-idle CPUs, such that
nohz.idle_cpus_mask = S
nohz.next_balance = T
When a new CPU k goes NOHZ idle (nohz_balance_enter_idle()), we end up
with:
nohz.idle_cpus_mask = S \U {k}
nohz.next_balance = T
Note that the nohz.next_balance hasn't changed - it won't be updated until
a NOHZ balance is triggered. This is problematic if the newly NOHZ idle CPU
has an earlier rq.next_balance than the other NOHZ idle CPUs, IOW if:
cpu_rq(k).next_balance < nohz.next_balance
In such scenarios, the existing nohz.next_balance will prevent any NOHZ
balance from happening, which itself will prevent nohz.next_balance from
being updated to this new cpu_rq(k).next_balance. Unnecessary load balance
delays of over 12ms caused by this were observed on an arm64 RB5 board.
Use the new nohz.needs_update flag to mark the presence of newly-idle CPUs
that need their rq->next_balance to be collated into
nohz.next_balance. Trigger a NOHZ_NEXT_KICK when the flag is set.
Signed-off-by: Valentin Schneider <valentin.schneider@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Vincent Guittot <vincent.guittot@linaro.org>
Link: https://lkml.kernel.org/r/20210823111700.2842997-3-valentin.schneider@arm.com
A following patch will trigger NOHZ idle balances as a means to update
nohz.next_balance. Vincent noted that blocked load updates can have
non-negligible overhead, which should be avoided if the intent is to only
update nohz.next_balance.
Add a new NOHZ balance kick flag, NOHZ_NEXT_KICK. Gate NOHZ blocked load
update by the presence of NOHZ_STATS_KICK - currently all NOHZ balance
kicks will have the NOHZ_STATS_KICK flag set, so no change in behaviour is
expected.
Suggested-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Valentin Schneider <valentin.schneider@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Vincent Guittot <vincent.guittot@linaro.org>
Link: https://lkml.kernel.org/r/20210823111700.2842997-2-valentin.schneider@arm.com
In commit b212921b13 ("elf: don't use MAP_FIXED_NOREPLACE for elf
executable mappings") we still leave MAP_FIXED_NOREPLACE in place for
load_elf_interp.
Unfortunately, this will cause kernel to fail to start with:
1 (init): Uhuuh, elf segment at 00003ffff7ffd000 requested but the memory is mapped already
Failed to execute /init (error -17)
The reason is that the elf interpreter (ld.so) has overlapping segments.
readelf -l ld-2.31.so
Program Headers:
Type Offset VirtAddr PhysAddr
FileSiz MemSiz Flags Align
LOAD 0x0000000000000000 0x0000000000000000 0x0000000000000000
0x000000000002c94c 0x000000000002c94c R E 0x10000
LOAD 0x000000000002dae0 0x000000000003dae0 0x000000000003dae0
0x00000000000021e8 0x0000000000002320 RW 0x10000
LOAD 0x000000000002fe00 0x000000000003fe00 0x000000000003fe00
0x00000000000011ac 0x0000000000001328 RW 0x10000
The reason for this problem is the same as described in commit
ad55eac74f ("elf: enforce MAP_FIXED on overlaying elf segments").
Not only executable binaries, elf interpreters (e.g. ld.so) can have
overlapping elf segments, so we better drop MAP_FIXED_NOREPLACE and go
back to MAP_FIXED in load_elf_interp.
Fixes: 4ed2863951 ("fs, elf: drop MAP_FIXED usage from elf_map")
Cc: <stable@vger.kernel.org> # v4.19
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Michal Hocko <mhocko@suse.com>
Signed-off-by: Chen Jingwen <chenjingwen6@huawei.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
allocation. Also fix error handling code paths in ext4_dx_readdir()
and ext4_fill_super(). Finally, avoid a grabbing a journal head in
the delayed allocation write in the common cases where we are
overwriting an pre-existing block or appending to an inode.
-----BEGIN PGP SIGNATURE-----
iQEzBAABCAAdFiEEK2m5VNv+CHkogTfJ8vlZVpUNgaMFAmFZ2SsACgkQ8vlZVpUN
gaN6DAgAkIeisL1EfQT0VwshEs8y7N6IoX8dydLSRLpNf5oWiJOv2CTY9Qpi6X/C
qNfuLsbJ2NXChvhIAM2hD82hvX21rYc6iqPxgho02VF4eYIP7NzLjwTFKnKbHPB5
TiF498nJTnkcmSrJUEXmSAEdLoCwa5THH9+9HVHXZrkLXPULBtOOJ85mDAcIzVhV
Zqb7yfbpWl0gnF0S0YjNATPtbhcC9EiC4MOVYVesRlgT9B3+k5q4fmVU0euTU9OH
F2H6TNG+Mg/19gTnDP5acB9+eXHvYEqMpe+CaDifR9iFE9PTG/Edhxr6z9roXhHr
kBvEVHSFH+YTEJXghnpS9YDd9Lwc9w==
=WKzd
-----END PGP SIGNATURE-----
Merge tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Pull ext4 fixes from Ted Ts'o:
"Fix a number of ext4 bugs in fast_commit, inline data, and delayed
allocation.
Also fix error handling code paths in ext4_dx_readdir() and
ext4_fill_super().
Finally, avoid a grabbing a journal head in the delayed allocation
write in the common cases where we are overwriting a pre-existing
block or appending to an inode"
* tag 'ext4_for_linus_stable' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
ext4: recheck buffer uptodate bit under buffer lock
ext4: fix potential infinite loop in ext4_dx_readdir()
ext4: flush s_error_work before journal destroy in ext4_fill_super
ext4: fix loff_t overflow in ext4_max_bitmap_size()
ext4: fix reserved space counter leakage
ext4: limit the number of blocks in one ADD_RANGE TLV
ext4: enforce buffer head state assertion in ext4_da_map_blocks
ext4: remove extent cache entries when truncating inline data
ext4: drop unnecessary journal handle in delalloc write
ext4: factor out write end code of inline file
ext4: correct the error path of ext4_write_inline_data_end()
ext4: check and update i_disksize properly
ext4: add error checking to ext4_ext_replay_set_iblocks()
The objtool warning that the kvm instruction emulation code triggered
wasn't very useful:
arch/x86/kvm/emulate.o: warning: objtool: __ex_table+0x4: don't know how to handle reloc symbol type: kvm_fastop_exception
in that it helpfully tells you which symbol name it had trouble figuring
out the relocation for, but it doesn't actually say what the unknown
symbol type was that triggered it all.
In this case it was because of missing type information (type 0, aka
STT_NOTYPE), but on the whole it really should just have printed that
out as part of the message.
Because if this warning triggers, that's very much the first thing you
want to know - why did reloc2sec_off() return failure for that symbol?
So rather than just saying you can't handle some type of symbol without
saying what the type _was_, just print out the type number too.
Fixes: 24ff652573 ("objtool: Teach get_alt_entry() about more relocation types")
Link: https://lore.kernel.org/lkml/CAHk-=wiZwq-0LknKhXN4M+T8jbxn_2i9mcKpO+OaBSSq_Eh7tg@mail.gmail.com/
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
The recent change to make objtool aware of more symbol relocation types
(commit 24ff652573: "objtool: Teach get_alt_entry() about more
relocation types") also added another check, and resulted in this
objtool warning when building kvm on x86:
arch/x86/kvm/emulate.o: warning: objtool: __ex_table+0x4: don't know how to handle reloc symbol type: kvm_fastop_exception
The reason seems to be that kvm_fastop_exception() is marked as a global
symbol, which causes the relocation to ke kept around for objtool. And
at the same time, the kvm_fastop_exception definition (which is done as
an inline asm statement) doesn't actually set the type of the global,
which then makes objtool unhappy.
The minimal fix is to just not mark kvm_fastop_exception as being a
global symbol. It's only used in that one compilation unit anyway, so
it was always pointless. That's how all the other local exception table
labels are done.
I'm not entirely happy about the kinds of games that the kvm code plays
with doing its own exception handling, and the fact that it confused
objtool is most definitely a symptom of the code being a bit too subtle
and ad-hoc. But at least this trivial one-liner makes objtool no longer
upset about what is going on.
Fixes: 24ff652573 ("objtool: Teach get_alt_entry() about more relocation types")
Link: https://lore.kernel.org/lkml/CAHk-=wiZwq-0LknKhXN4M+T8jbxn_2i9mcKpO+OaBSSq_Eh7tg@mail.gmail.com/
Cc: Borislav Petkov <bp@suse.de>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Sean Christopherson <seanjc@google.com>
Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
Cc: Wanpeng Li <wanpengli@tencent.com>
Cc: Jim Mattson <jmattson@google.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Nathan Chancellor <nathan@kernel.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Here are some small misc driver fixes for 5.15-rc4. They are in two
"groups":
- ipack driver fixes for issues found by Johan Hovold
- interconnect driver fixes for reported problems
All of these have been in linux-next for a while with no reported
issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCYVmBlw8cZ3JlZ0Brcm9h
aC5jb20ACgkQMUfUDdst+ykD+gCdHWN6ccVCOjlJT057Pwd3ROQ7sxAAn0areAtI
XqQJsKgeIaAxAkti5u+D
=WLbS
-----END PGP SIGNATURE-----
Merge tag 'char-misc-5.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc
Pull char/misc driver fixes from Greg KH:
"Here are some small misc driver fixes for 5.15-rc4. They are in two
"groups":
- ipack driver fixes for issues found by Johan Hovold
- interconnect driver fixes for reported problems
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-5.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
ipack: ipoctal: fix module reference leak
ipack: ipoctal: fix missing allocation-failure check
ipack: ipoctal: fix tty-registration error handling
ipack: ipoctal: fix tty registration race
ipack: ipoctal: fix stack information leak
interconnect: qcom: sdm660: Add missing a2noc qos clocks
dt-bindings: interconnect: sdm660: Add missing a2noc qos clocks
interconnect: qcom: sdm660: Correct NOC_QOS_PRIORITY shift and mask
interconnect: qcom: sdm660: Fix id of slv_cnoc_mnoc_cfg
Here are some driver core and kernfs fixes for reported issues for
5.15-rc4. These fixes include:
- kernfs positive dentry bugfix
- debugfs_create_file_size error path fix
- cpumask sysfs file bugfix to preserve the user/kernel abi (has
been reported multiple times.)
- devlink fixes for mdiobus devices as reported by the subsystem
maintainers.
Also included in here are some devlink debugging changes to make it
easier for people to report problems when asked. They have already
helped with the mdiobus and other subsystems reporting issues.
All of these have been linux-next for a while with no reported issues.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-----BEGIN PGP SIGNATURE-----
iG0EABECAC0WIQT0tgzFv3jCIUoxPcsxR9QN2y37KQUCYVmC1A8cZ3JlZ0Brcm9h
aC5jb20ACgkQMUfUDdst+ykfCQCgtQ0kdPoPdUG6mPCn45rrbJQLBY4AnRL5JyhO
zB60l6C2EHHnLnRxMnQq
=gygB
-----END PGP SIGNATURE-----
Merge tag 'driver-core-5.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core fixes from Greg KH:
"Here are some driver core and kernfs fixes for reported issues for
5.15-rc4. These fixes include:
- kernfs positive dentry bugfix
- debugfs_create_file_size error path fix
- cpumask sysfs file bugfix to preserve the user/kernel abi (has been
reported multiple times.)
- devlink fixes for mdiobus devices as reported by the subsystem
maintainers.
Also included in here are some devlink debugging changes to make it
easier for people to report problems when asked. They have already
helped with the mdiobus and other subsystems reporting issues.
All of these have been linux-next for a while with no reported issues"
* tag 'driver-core-5.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core:
kernfs: also call kernfs_set_rev() for positive dentry
driver core: Add debug logs when fwnode links are added/deleted
driver core: Create __fwnode_link_del() helper function
driver core: Set deferred probe reason when deferred by driver core
net: mdiobus: Set FWNODE_FLAG_NEEDS_CHILD_BOUND_ON_ADD for mdiobus parents
driver core: fw_devlink: Add support for FWNODE_FLAG_NEEDS_CHILD_BOUND_ON_ADD
driver core: fw_devlink: Improve handling of cyclic dependencies
cpumask: Omit terminating null byte in cpumap_print_{list,bitmask}_to_buf
debugfs: debugfs_create_file_size(): use IS_ERR to check for error
- Make sure tunable_scaling buffer is null-terminated after an update in sysfs
- Fix LTP named regression due to cgroup list ordering
-----BEGIN PGP SIGNATURE-----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=Kj5B
-----END PGP SIGNATURE-----
Merge tag 'sched_urgent_for_v5.15_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull scheduler fixes from Borislav Petkov:
- Tell the compiler to always inline is_percpu_thread()
- Make sure tunable_scaling buffer is null-terminated after an update
in sysfs
- Fix LTP named regression due to cgroup list ordering
* tag 'sched_urgent_for_v5.15_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
sched: Always inline is_percpu_thread()
sched/fair: Null terminate buffer when updating tunable_scaling
sched/fair: Add ancestors of unthrottled undecayed cfs_rq
- Update the event constraints for Icelake
- Make sure the active time of an event is updated even for inactive events
-----BEGIN PGP SIGNATURE-----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=TQvw
-----END PGP SIGNATURE-----
Merge tag 'perf_urgent_for_v5.15_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull perf fixes from Borislav Petkov:
- Make sure the destroy callback is reset when a event initialization
fails
- Update the event constraints for Icelake
- Make sure the active time of an event is updated even for inactive
events
* tag 'perf_urgent_for_v5.15_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/core: fix userpage->time_enabled of inactive events
perf/x86/intel: Update event constraints for ICX
perf/x86: Reset destroy callback on event init failure
which remove section symbols now
-----BEGIN PGP SIGNATURE-----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=Buve
-----END PGP SIGNATURE-----
Merge tag 'objtool_urgent_for_v5.15_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull objtool fix from Borislav Petkov:
- Handle symbol relocations properly due to changes in the toolchains
which remove section symbols now
* tag 'objtool_urgent_for_v5.15_rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
objtool: Teach get_alt_entry() about more relocation types
-----BEGIN PGP SIGNATURE-----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=X733
-----END PGP SIGNATURE-----
Merge tag '5.15-rc3-ksmbd-fixes' of git://git.samba.org/ksmbd
Pull ksmbd server fixes from Steve French:
"Eleven fixes for the ksmbd kernel server, mostly security related:
- an important fix for disabling weak NTLMv1 authentication
- seven security (improved buffer overflow checks) fixes
- fix for wrong infolevel struct used in some getattr/setattr paths
- two small documentation fixes"
* tag '5.15-rc3-ksmbd-fixes' of git://git.samba.org/ksmbd:
ksmbd: missing check for NULL in convert_to_nt_pathname()
ksmbd: fix transform header validation
ksmbd: add buffer validation for SMB2_CREATE_CONTEXT
ksmbd: add validation in smb2 negotiate
ksmbd: add request buffer validation in smb2_set_info
ksmbd: use correct basic info level in set_file_basic_info()
ksmbd: remove NTLMv1 authentication
ksmbd: fix documentation for 2 functions
MAINTAINERS: rename cifs_common to smbfs_common in cifs and ksmbd entry
ksmbd: fix invalid request buffer access in compound
ksmbd: remove RFC1002 check in smb2 request
Five fairly minor fixes and spelling updates, all in drivers. Even
though the ufs fix is in tracing, it's a potentially exploitable use
beyond end of array bug.
Signed-off-by: James E.J. Bottomley <jejb@linux.ibm.com>
-----BEGIN PGP SIGNATURE-----
iJwEABMIAEQWIQTnYEDbdso9F2cI+arnQslM7pishQUCYVithCYcamFtZXMuYm90
dG9tbGV5QGhhbnNlbnBhcnRuZXJzaGlwLmNvbQAKCRDnQslM7pisheg2AQCIEeRe
aLd9ZK8brXzB9b1EApCPgpWKGhF217P/TWPuTgEAoZRJZWJ3jD/yzCke/IyF62+x
LuYiCR2yTMhsTCIGodM=
=6v3Q
-----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:
"Five fairly minor fixes and spelling updates, all in drivers. Even
though the ufs fix is in tracing, it's a potentially exploitable use
beyond end of array bug"
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: csiostor: Add module softdep on cxgb4
scsi: qla2xxx: Fix excessive messages during device logout
scsi: virtio_scsi: Fix spelling mistake "Unsupport" -> "Unsupported"
scsi: ses: Fix unsigned comparison with less than zero
scsi: ufs: Fix illegal offset in UPIU event trace
-----BEGIN PGP SIGNATURE-----
iQJEBAABCAAuFiEEwPw5LcreJtl1+l5K99NY+ylx4KYFAmFXvGIQHGF4Ym9lQGtl
cm5lbC5kawAKCRD301j7KXHgprAgD/9WKQIVPyzXC3Ui8OkSb9DM+dnU47+4b6sL
Naud4khgrvMjTIdZC9YjwAhKBRNsXbcTXRLbBsxVzk7HhGI31jR711qaOZ/jMRbc
dPwcpF82/Yr8BlIl5i3SBvxFNW8FAJWLTVvPvJXSjUBPECTgY6MnchojOjYz1CrN
a0TmtHs5Feu+nLyzKgQlPMv3P8tvrS1hQNpfvbK1oWeEQuyONGacK82nl853ak30
c0uywVsvO+yiBY2xWhiTqperbPwnLxCYOMOdBqbNvlPlGIkEbkW1YWhm2/5f3vRi
37C3ibmt2SCnJaAyiNUKrYSTCK9BoeWFqtxVwyGB8WxWsUXrdocEOoBdohxDHrcp
gHIqxPVUD2hyEroRQseq4NTvERkRvOiF4jAFA3lHOw5zLtPGNEvC0EUFRMm3Ur3/
DyviDBPy321pvrbqGg5uIL3o6wuXDQNnwxdXa2wElWDLuTYp8tB25rqAe2IRJ+iS
k32AsgfL+y5fhjsA6ros/hpQ6FQTAKSW3i6S/0L+QB6H0jYb1ue9JPrA+3MoizvI
p+PdmpLeFVQxnfthT2J+6pzQADoxcMwg5ALgyLFvhhL1YAqyhHkKgdAIS3gKXxYm
GbQLd2hkv7wPZHEsS/XiGCj+zzyawjsr5hSHRqkbZ1QlyfnuTz5uI65WzST68o4d
KOAvQTx4aQ==
=SMoX
-----END PGP SIGNATURE-----
Merge tag 'block-5.15-2021-10-01' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
"A few block fixes for this release:
- Revert a BFQ commit that causes breakage for people. Unfortunately
it was auto-selected for stable as well, so now 5.14.7 suffers from
it too. Hopefully stable will pick up this revert quickly too, so
we can remove the issue on that end as well.
- Add a quirk for Apple NVMe controllers, which due to their
non-compliance broke due to the introduction of command sequences
(Keith)
- Use shifts in nbd, fixing a __divdi3 issue (Nick)"
* tag 'block-5.15-2021-10-01' of git://git.kernel.dk/linux-block:
nbd: use shifts rather than multiplies
Revert "block, bfq: honor already-setup queue merges"
nvme: add command id quirk for apple controllers
-----BEGIN PGP SIGNATURE-----
iQJEBAABCAAuFiEEwPw5LcreJtl1+l5K99NY+ylx4KYFAmFXvEwQHGF4Ym9lQGtl
cm5lbC5kawAKCRD301j7KXHgpjALD/4/SZyJD+VcPM5Zx7kp2JMLm5GM6ZFnRTpI
ZZoRsWnKZ39AAXS4GvGWGb+lEqI7LkLUy0SeUWbK2G3TIdKDU1Sza15knie3uzQ0
Np/No3kv/2vl49gY64A/IVhcqDaHCVXZjRLe2cIK6kULmEH5AwNuTMvYS84g0+38
XCDaWqzGbwTvtJ1RBjxlvXwl9EpmLwY+fr57KOxRgjIvfe68vZcSQBKPVJro3uUS
2toSfiZuRIBk8pIwZ+WCnEv0zbvicjaQVFL6kGpANO4zMsBfkgjeB2Bz+sS8vtfB
pQ1RR24cl3vtoGwYOLOBeVMxyaekkBxruXYmOogRNLq0Uq+EHJn2Wu0ifvk5dw9u
yMXFUEC2TPPV4ah8lFRkVmU6bVeOVmaTn/Yp2nQRR830PkZVNST4vcXeJTNpHa2k
b2uKPCJlkQzpq1ea29FbJ6RN/IrTOcTog+RWKXF4A3PMEkdUPP64a/lFtmMbIu9S
mg00P1d3qA6rmrOX+Igw6zbtxyEn1pVEjexFfi49dQMM1wphpQPOHq3EgcQi/UDM
SbKo6f6RsYDhlte8YVz70KSjW1HwTbepm4z6Zuts7Lbbbu1LUJrO9yf/LMEIJxaH
no2fv82BPTSHUqWh0aqiVW+2DthaX3oZtQe6HpK2+SpV+Rre/RktnEFTN2JuSNYI
DzCNRAJa+A==
=qP3G
-----END PGP SIGNATURE-----
Merge tag 'io_uring-5.15-2021-10-01' of git://git.kernel.dk/linux-block
Pull io_uring fixes from Jens Axboe:
"Two fixes in here:
- The signal issue that was discussed start of this week (me).
- Kill dead fasync support in io_uring. Looks like it was broken
since io_uring was initially merged, and given that nobody has ever
complained about it, let's just kill it (Pavel)"
* tag 'io_uring-5.15-2021-10-01' of git://git.kernel.dk/linux-block:
io_uring: kill fasync
io-wq: exclusively gate signal based exit on get_signal() return
- Fix a regression that caused the sysfs ABI for pmem block devices to
not be registered. This fails the nvdimm unit tests and dax xfstests.
- Fix numa node lookups for dax-kmem memory (device-dax memory assigned
to the page allocator) on ARM64.
-----BEGIN PGP SIGNATURE-----
iHUEABYIAB0WIQSbo+XnGs+rwLz9XGXfioYZHlFsZwUCYVeyFQAKCRDfioYZHlFs
Zx/DAQDU2nQV86dYV4jl5ivNedcG8OMafSXMeSdB8E4kIGMG6gD/UaslrwSnCUO1
LIZZ00ubfV9vySZl5NJ5I7yvkXcj1gU=
=P2BW
-----END PGP SIGNATURE-----
Merge tag 'libnvdimm-fixes-5.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull libnvdimm fixes from Dan Williams:
"A fix for a regression added this cycle in the pmem driver, and for a
long standing bug for failed NUMA node lookups on ARM64.
This has appeared in -next for several days with no reported issues.
Summary:
- Fix a regression that caused the sysfs ABI for pmem block devices
to not be registered. This fails the nvdimm unit tests and dax
xfstests.
- Fix numa node lookups for dax-kmem memory (device-dax memory
assigned to the page allocator) on ARM64"
* tag 'libnvdimm-fixes-5.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
nvdimm/pmem: fix creating the dax group
ACPI: NFIT: Use fallback node id when numa info in NFIT table is incorrect
In cachefiles_mark_object_buried, the dentry in question may not have an
owner, and thus our cachefiles_object pointer may be NULL when calling
the tracepoint, in which case we will also not have a valid debug_id to
print in the tracepoint.
Check for NULL object in the tracepoint and if so, just set debug_id to
MAX_UINT as was done in 2908f5e101 ("fscache: Add a cookie debug ID
and use that in traces").
This fixes the following oops:
FS-Cache: Cache "mycache" added (type cachefiles)
CacheFiles: File cache on vdc registered
...
Workqueue: fscache_object fscache_object_work_func [fscache]
RIP: 0010:trace_event_raw_event_cachefiles_mark_buried+0x4e/0xa0 [cachefiles]
....
Call Trace:
cachefiles_mark_object_buried+0xa5/0xb0 [cachefiles]
cachefiles_bury_object+0x270/0x430 [cachefiles]
cachefiles_walk_to_object+0x195/0x9c0 [cachefiles]
cachefiles_lookup_object+0x5a/0xc0 [cachefiles]
fscache_look_up_object+0xd7/0x160 [fscache]
fscache_object_work_func+0xb2/0x340 [fscache]
process_one_work+0x1f1/0x390
worker_thread+0x53/0x3e0
kthread+0x127/0x150
Fixes: 2908f5e101 ("fscache: Add a cookie debug ID and use that in traces")
Signed-off-by: Dave Wysochanski <dwysocha@redhat.com>
Signed-off-by: David Howells <dhowells@redhat.com>
cc: linux-cachefs@redhat.com
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
5.15-rc1 crashes with blank screen when booting up on two ThinkPads
using i915. Bisections converge convincingly, but arrive at different
and suprising "culprits", none of them the actual culprit.
netconsole (with init_netconsole() hacked to call i915_init() when
logging has started, instead of by module_init()) tells the story:
kernel BUG at drivers/gpu/drm/i915/i915_sw_fence.c:245!
with RSI: ffffffff814d408b pointing to sw_fence_dummy_notify().
I've been building with CONFIG_CC_OPTIMIZE_FOR_SIZE=y, and that
function needs to be 4-byte aligned.
Fixes: 62eaf0ae21 ("drm/i915/guc: Support request cancellation")
Signed-off-by: Hugh Dickins <hughd@google.com>
Tested-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
If driver read tmp value sufficient for
(tmp & 0x08) && (!(tmp & 0x80)) && ((tmp & 0x7) == ((tmp >> 4) & 0x7))
from device then Null pointer dereference occurs.
(It is possible if tmp = 0b0xyz1xyz, where same literals mean same numbers)
Also lm75[] does not serve a purpose anymore after switching to
devm_i2c_new_dummy_device() in w83791d_detect_subclients().
The patch fixes possible NULL pointer dereference by removing lm75[].
Found by Linux Driver Verification project (linuxtesting.org).
Cc: stable@vger.kernel.org
Signed-off-by: Nadezda Lutovinova <lutovinova@ispras.ru>
Link: https://lore.kernel.org/r/20210921155153.28098-3-lutovinova@ispras.ru
[groeck: Dropped unnecessary continuation lines, fixed multi-line alignments]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
If driver read val value sufficient for
(val & 0x08) && (!(val & 0x80)) && ((val & 0x7) == ((val >> 4) & 0x7))
from device then Null pointer dereference occurs.
(It is possible if tmp = 0b0xyz1xyz, where same literals mean same numbers)
Also lm75[] does not serve a purpose anymore after switching to
devm_i2c_new_dummy_device() in w83791d_detect_subclients().
The patch fixes possible NULL pointer dereference by removing lm75[].
Found by Linux Driver Verification project (linuxtesting.org).
Cc: stable@vger.kernel.org
Signed-off-by: Nadezda Lutovinova <lutovinova@ispras.ru>
Link: https://lore.kernel.org/r/20210921155153.28098-2-lutovinova@ispras.ru
[groeck: Dropped unnecessary continuation lines, fixed multipline alignment]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
If driver read val value sufficient for
(val & 0x08) && (!(val & 0x80)) && ((val & 0x7) == ((val >> 4) & 0x7))
from device then Null pointer dereference occurs.
(It is possible if tmp = 0b0xyz1xyz, where same literals mean same numbers)
Also lm75[] does not serve a purpose anymore after switching to
devm_i2c_new_dummy_device() in w83791d_detect_subclients().
The patch fixes possible NULL pointer dereference by removing lm75[].
Found by Linux Driver Verification project (linuxtesting.org).
Cc: stable@vger.kernel.org
Signed-off-by: Nadezda Lutovinova <lutovinova@ispras.ru>
Link: https://lore.kernel.org/r/20210921155153.28098-1-lutovinova@ispras.ru
[groeck: Dropped unnecessary continuation lines, fixed multi-line alignment]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Add missed attribute for reading POUT from page 1.
It is supported by device, but has been missed in initial commit.
Fixes: 2c6fcbb211 ("hwmon: (pmbus) Add support for MPS Multi-phase mp2975 controller")
Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Link: https://lore.kernel.org/r/20210927070740.2149290-1-vadimp@nvidia.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
The bytes for max_power_out from the ibm-cffps devices differ in byte
order for some power supplies.
The Witherspoon power supply returns the bytes in MSB/LSB order.
The Rainier power supply returns the bytes in LSB/MSB order.
The Witherspoon power supply uses version cffps1. The Rainier power
supply should use version cffps2. If version is cffps1, swap the bytes
before output to max_power_out.
Tested:
Witherspoon before: 3148. Witherspoon after: 3148.
Rainier before: 53255. Rainier after: 2000.
Signed-off-by: Brandon Wyman <bjwyman@gmail.com>
Reviewed-by: Eddie James <eajames@linux.ibm.com>
Link: https://lore.kernel.org/r/20210928205051.1222815-1-bjwyman@gmail.com
[groeck: Replaced yoda programming]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
The P10 (temp sensor version 0x10) doesn't do the same VRM status
reporting that was used on P9. It just reports the temperature, so
drop the check for VRM fru type in the sysfs show function, and don't
set the name to "alarm".
Fixes: db4919ec86 ("hwmon: (occ) Add new temperature sensor type")
Signed-off-by: Eddie James <eajames@linux.ibm.com>
Link: https://lore.kernel.org/r/20210929153604.14968-1-eajames@linux.ibm.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Because Rui is now going to focus on work that is not related to the
maintenance of the thermal subsystem in the kernel, Rafael will start
to help Daniel with handling the development process as a new member
of the thermal maintainers team. Rui will continue to review patches
in that area.
The thermal development process flow will change so that the material
from the thermal git tree will be merged into the thermal branch of
the linux-pm.git tree before going into the mainline.
Update the information in MAINTAINERS accordingly.
Signed-off-by: Rafael J. Wysocki <rafael@kernel.org>
Acked-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-----BEGIN PGP SIGNATURE-----
iQFIBAABCAAyFiEE8TM4V0tmI4mGbHaCv/vSX3jHroMFAmFXQUoUHHBib256aW5p
QHJlZGhhdC5jb20ACgkQv/vSX3jHroMglgf/egh3zb9/+BUQWe0xWfhcINNzpsVk
PJtiBmJc3nQLbZbTSLp63rouy1lNgR0s2DiMwP7G1u39OwW8W3LHMrBUSqF1F01+
gntb4GGiRTiTPJI64K4z6ytORd3tuRarHq8TUIa2zvki9ZW5Obgkm1i1RsNMOo+s
AOA7whhpS8e/a5fBbtbS9bTZb30PKTZmbW4oMjvO9Sw4Eb76IauqPSEtRPSuCAc7
r7z62RTlm10Qk0JR3tW1iXMxTJHZk+tYPJ8pclUAWVX5bZqWa/9k8R0Z5i/miFiZ
glW/y3R4+aUwIQV2v7V3Jx9MOKDhZxniMtnqZG/Hp9NVDtWIz37V/U37vw==
=zQQ1
-----END PGP SIGNATURE-----
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull more kvm fixes from Paolo Bonzini:
"Small x86 fixes"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: selftests: Ensure all migrations are performed when test is affined
KVM: x86: Swap order of CPUID entry "index" vs. "significant flag" checks
ptp: Fix ptp_kvm_getcrosststamp issue for x86 ptp_kvm
x86/kvmclock: Move this_cpu_pvti into kvmclock.h
selftests: KVM: Don't clobber XMM register when read
KVM: VMX: Fix a TSX_CTRL_CPUID_CLEAR field mask issue
amdgpu, i915, tegra, and one exynos driver fix
-----BEGIN PGP SIGNATURE-----
iQIzBAABCgAdFiEEb4nG6jLu8Y5XI+PfTA9ye/CYqnEFAmFXPSsACgkQTA9ye/CY
qnG2FA//U/5l+IGl1sl/8/dPx8kQD2O5pthkTiiKMZm1iL8ZKlFklLKg0l5aGxej
XhfkYuqdiDxS+JOYAOeeSILKzyAtinCT+GZ2o1k4Ip1cC7Eh01QRu4hcjT7CbYdf
sUwQq/6uCBIaMr3Fxp0FPCUdKFjGBolomkFM8wgMusm1zRh5puJTgenSdxTkQKDB
HqPfMX2bgn9hbp0uEbU2GY6Z4LJrOUQ4axM4uwOUrwm5nUkmVBNfaHEaONoUmlMd
tU8/R3bD4s7++ZuyHGqpVG3iqfx08+GdJrnhKSNo4v1t/agT0AMEinZlerkkn+0B
5F5Dv6dOKtGwheldSTEG0K+POEfqGKgL+6H53C64NUDEUIGF0OJ1Dq16TlESe8dD
pwtGsM2N5Z0t3R72ktyPbbTBUwok/Ek0J7sPu52i4nlEKs4bRa1XTB+XI10yBQ8C
6DczMw1TWmaqDtWuVr7ucrhfe0NeCOQo7d9G2QiK2w4aEFM6I4z1rxpCuhpZpuXp
+j8jZa8AlGfExEnclghIxKsaEqgdCfXGj0Qi6SzXLADEMyxXFRx6rVozVzKCoCdq
RgRjifwfJWqp3URYBEFulxNtb3gm4ilq+pHL08GwRiHUDbsMhoVZBq4Uyzh9IFnR
DUIB0yo209+QtJgz4/R5K8IhkTYeGUJhSQOsOi4MQYHlWxn2SWI=
=VY9u
-----END PGP SIGNATURE-----
Merge tag 'drm-fixes-2021-10-01' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Daniel Vetter:
"Dave is out on a long w/e, should be back next week.
Nothing nefarious, just a bunch of driver fixes: amdgpu, i915, tegra,
and one exynos driver fix"
* tag 'drm-fixes-2021-10-01' of git://anongit.freedesktop.org/drm/drm:
drm/amdgpu: force exit gfxoff on sdma resume for rmb s0ix
drm/amdgpu: check tiling flags when creating FB on GFX8-
drm/amd/display: Pass PCI deviceid into DC
drm/amd/display: initialize backlight_ramping_override to false
drm/amdgpu: correct initial cp_hqd_quantum for gfx9
drm/amd/display: Fix Display Flicker on embedded panels
drm/amdgpu: fix gart.bo pin_count leak
drm/i915: Remove warning from the rps worker
drm/i915/request: fix early tracepoints
drm/i915/guc, docs: Fix pdfdocs build error by removing nested grid
gpu: host1x: Plug potential memory leak
gpu/host1x: fence: Make spinlock static
drm/tegra: uapi: Fix wrong mapping end address in case of disabled IOMMU
drm/tegra: dc: Remove unused variables
drm/exynos: Make use of the helper function devm_platform_ioremap_resource()
drm/i915/gvt: fix the usage of ww lock in gvt scheduler.
We have never supported fasync properly, it would only fire when there
is something polling io_uring making it useless. The original support came
in through the initial io_uring merge for 5.1. Since it's broken and
nobody has reported it, get rid of the fasync bits.
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Link: https://lore.kernel.org/r/2f7ca3d344d406d34fa6713824198915c41cea86.1633080236.git.asml.silence@gmail.com
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Including:
- Two fixes for the new Apple DART driver to fix a kernel panic
and a stale data usage issue
- Intel VT-d fix for how PCI device ids are printed
-----BEGIN PGP SIGNATURE-----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=PAWk
-----END PGP SIGNATURE-----
Merge tag 'iommu-fixes-v5.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
Pull iommu fixes from Joerg Roedel:
- Two fixes for the new Apple DART driver to fix a kernel panic and a
stale data usage issue
- Intel VT-d fix for how PCI device ids are printed
* tag 'iommu-fixes-v5.15-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
iommu/dart: Clear sid2group entry when a group is freed
iommu/vt-d: Drop "0x" prefix from PCI bus & device addresses
iommu/dart: Remove iommu_flush_ops
- Use devm_platform_ioremap_resource() helper function instead of old
one.
-----BEGIN PGP SIGNATURE-----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=iPah
-----END PGP SIGNATURE-----
Merge tag 'exynos-drm-fixes-for-v5.15-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/daeinki/drm-exynos into drm-fixes
One cleanup
- Use devm_platform_ioremap_resource() helper function instead of old
one.
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
From: Inki Dae <inki.dae@samsung.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20210928074158.2942-1-inki.dae@samsung.com
Since commit a7b359fc6a ("sched/fair: Correctly insert cfs_rq's to
list on unthrottle") we add cfs_rqs with no runnable tasks but not fully
decayed into the load (leaf) list. We may ignore adding some ancestors
and therefore breaking tmp_alone_branch invariant. This broke LTP test
cfs_bandwidth01 and it was partially fixed in commit fdaba61ef8
("sched/fair: Ensure that the CFS parent is added after unthrottling").
I noticed the named test still fails even with the fix (but with low
probability, 1 in ~1000 executions of the test). The reason is when
bailing out of unthrottle_cfs_rq early, we may miss adding ancestors of
the unthrottled cfs_rq, thus, not joining tmp_alone_branch properly.
Fix this by adding ancestors if we notice the unthrottled cfs_rq was
added to the load list.
Fixes: a7b359fc6a ("sched/fair: Correctly insert cfs_rq's to list on unthrottle")
Signed-off-by: Michal Koutný <mkoutny@suse.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Vincent Guittot <vincent.guittot@linaro.org>
Reviewed-by: Odin Ugedal <odin@uged.al>
Link: https://lore.kernel.org/r/20210917153037.11176-1-mkoutny@suse.com
Users of rdpmc rely on the mmapped user page to calculate accurate
time_enabled. Currently, userpage->time_enabled is only updated when the
event is added to the pmu. As a result, inactive event (due to counter
multiplexing) does not have accurate userpage->time_enabled. This can
be reproduced with something like:
/* open 20 task perf_event "cycles", to create multiplexing */
fd = perf_event_open(); /* open task perf_event "cycles" */
userpage = mmap(fd); /* use mmap and rdmpc */
while (true) {
time_enabled_mmap = xxx; /* use logic in perf_event_mmap_page */
time_enabled_read = read(fd).time_enabled;
if (time_enabled_mmap > time_enabled_read)
BUG();
}
Fix this by updating userpage for inactive events in merge_sched_in.
Suggested-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reported-and-tested-by: Lucian Grijincu <lucian@fb.com>
Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20210929194313.2398474-1-songliubraving@fb.com
According to the latest event list, the event encoding 0xEF is only
available on the first 4 counters. Add it into the event constraints
table.
Fixes: 6017608936 ("perf/x86/intel: Add Icelake support")
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/1632842343-25862-1-git-send-email-kan.liang@linux.intel.com
perf_init_event tries multiple init callbacks and does not reset the
event state between tries. When x86_pmu_event_init runs, it
unconditionally sets the destroy callback to hw_perf_event_destroy. On
the next init attempt after x86_pmu_event_init, in perf_try_init_event,
if the pmu's capabilities includes PERF_PMU_CAP_NO_EXCLUDE, the destroy
callback will be run. However, if the next init didn't set the destroy
callback, hw_perf_event_destroy will be run (since the callback wasn't
reset).
Looking at other pmu init functions, the common pattern is to only set
the destroy callback on a successful init. Resetting the callback on
failure tries to replicate that pattern.
This was discovered after commit f11dd0d805 ("perf/x86/amd/ibs: Extend
PERF_PMU_CAP_NO_EXCLUDE to IBS Op") when the second (and only second)
run of the perf tool after a reboot results in 0 samples being
generated. The extra run of hw_perf_event_destroy results in
active_events having an extra decrement on each perf run. The second run
has active_events == 0 and every subsequent run has active_events < 0.
When active_events == 0, the NMI handler will early-out and not record
any samples.
Signed-off-by: Anand K Mistry <amistry@google.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20210929170405.1.I078b98ee7727f9ae9d6df8262bad7e325e40faf0@changeid
Occasionally objtool encounters symbol (as opposed to section)
relocations in .altinstructions. Typically they are the alternatives
written by elf_add_alternative() as encountered on a noinstr
validation run on vmlinux after having already ran objtool on the
individual .o files.
Basically this is the counterpart of commit 44f6a7c075 ("objtool:
Fix seg fault with Clang non-section symbols"), because when these new
assemblers (binutils now also does this) strip the section symbols,
elf_add_reloc_to_insn() is forced to emit symbol based relocations.
As such, teach get_alt_entry() about different relocation types.
Fixes: 9bc0bb5072 ("objtool/x86: Rewrite retpoline thunk calls")
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Reported-by: Borislav Petkov <bp@alien8.de>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Acked-by: Josh Poimboeuf <jpoimboe@redhat.com>
Tested-by: Nathan Chancellor <nathan@kernel.org>
Link: https://lore.kernel.org/r/YVWUvknIEVNkPvnP@hirez.programming.kicks-ass.net
Commit 8e33fadf94 ("ext4: remove an unnecessary if statement in
__ext4_get_inode_loc()") forget to recheck buffer's uptodate bit again
under buffer lock, which may overwrite the buffer if someone else have
already brought it uptodate and changed it.
Fixes: 8e33fadf94 ("ext4: remove an unnecessary if statement in __ext4_get_inode_loc()")
Cc: stable@kernel.org
Signed-off-by: Zhang Yi <yi.zhang@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Link: https://lore.kernel.org/r/20210910080316.70421-1-yi.zhang@huawei.com
When ext4_htree_fill_tree() fails, ext4_dx_readdir() can run into an
infinite loop since if info->last_pos != ctx->pos this will reset the
directory scan and reread the failing entry. For example:
1. a dx_dir which has 3 block, block 0 as dx_root block, block 1/2 as
leaf block which own the ext4_dir_entry_2
2. block 1 read ok and call_filldir which will fill the dirent and update
the ctx->pos
3. block 2 read fail, but we has already fill some dirent, so we will
return back to userspace will a positive return val(see ksys_getdents64)
4. the second ext4_dx_readdir will reset the world since info->last_pos
!= ctx->pos, and will also init the curr_hash which pos to block 1
5. So we will read block1 too, and once block2 still read fail, we can
only fill one dirent because the hash of the entry in block1(besides
the last one) won't greater than curr_hash
6. this time, we forget update last_pos too since the read for block2
will fail, and since we has got the one entry, ksys_getdents64 can
return success
7. Latter we will trapped in a loop with step 4~6
Cc: stable@kernel.org
Signed-off-by: yangerkun <yangerkun@huawei.com>
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Link: https://lore.kernel.org/r/20210914111415.3921954-1-yangerkun@huawei.com
