* Unexpected lockdep selftest failures
@ 2024-11-22 20:18 Bart Van Assche
2024-11-24 21:33 ` Palmer Dabbelt
2024-11-26 22:23 ` Boqun Feng
0 siblings, 2 replies; 4+ messages in thread
From: Bart Van Assche @ 2024-11-22 20:18 UTC (permalink / raw)
To: Peter Zijlstra, Ingo Molnar, Will Deacon, Waiman Long; +Cc: linux-kernel
Hi,
With the for-next branch of this tree: git://git.kernel.dk/linux-block
(commit 12ab2c13ca77 ("Merge branch 'for-6.13/block' into for-next")) I
see the following:
[ 0.887603][ T0]
--------------------------------------------------------------------------
[ 0.888763][ T0] | Wound/wait tests |
[ 0.889310][ T0] ---------------------
[ 0.889867][ T0] ww api failures: ok |FAILED|
ok |
[ 0.892597][ T0] ww contexts mixing: ok | ok |
[ 0.894638][ T0] finishing ww context: ok | ok |
ok | ok |
[ 0.898020][ T0] locking mismatches: ok | ok |
ok |
[ 0.900689][ T0] EDEADLK handling: ok | ok |
ok | ok | ok | ok | ok | ok | ok | ok |
[ 0.908172][ T0] spinlock nest unlocked: ok |
[ 0.909484][ T0] spinlock nest test: ok |
[ 0.910902][ T0]
-----------------------------------------------------
[ 0.911824][ T0] |block | try
|context|
[ 0.912970][ T0]
-----------------------------------------------------
[ 0.913890][ T0] context: ok | ok |
ok |
[ 0.916613][ T0] try: ok | ok |
ok |
[ 0.919235][ T0] block: ok | ok |
ok |
[ 0.921852][ T0] spinlock: ok | ok
|FAILED|
[ 0.924666][ T0]
--------------------------------------------------------------------------
[ 0.925852][ T0] | queued read lock tests |
[ 0.926506][ T0] ---------------------------
[ 0.927132][ T0] hardirq read-lock/lock-read: ok |
[ 0.928496][ T0] hardirq lock-read/read-lock: ok |
[ 0.929860][ T0] hardirq inversion: ok |
[ 0.931269][ T0] --------------------
[ 0.931827][ T0] | fs_reclaim tests |
[ 0.932383][ T0] --------------------
[ 0.932932][ T0] correct nesting: ok |
[ 0.934252][ T0] wrong nesting: ok |
[ 0.935518][ T0] protected nesting: ok |
[ 0.936784][ T0]
--------------------------------------------------------------------------
[ 0.937936][ T0] | wait context tests |
[ 0.938516][ T0]
--------------------------------------------------------------------------
[ 0.939661][ T0] | rcu | raw |
spin |mutex |
[ 0.940646][ T0]
--------------------------------------------------------------------------
[ 0.941798][ T0] in hardirq context: ok | ok |
ok | ok |
[ 0.944946][ T0] in hardirq context (not threaded): ok | ok |
ok | ok |
[ 0.948072][ T0] in softirq context: ok | ok |
ok | ok |
[ 0.951206][ T0] in RCU context: ok | ok |
ok | ok |
[ 0.954345][ T0] in RCU-bh context: ok | ok |
ok | ok |
[ 0.957477][ T0] in RCU-sched context: ok | ok |
ok | ok |
[ 0.960612][ T0] in RAW_SPINLOCK context: ok | ok |
ok | ok |
[ 0.963927][ T0] in SPINLOCK context: ok | ok |
ok | ok |
[ 0.967252][ T0] in MUTEX context: ok | ok |
ok | ok |
[ 0.970571][ T0]
--------------------------------------------------------------------------
[ 0.971702][ T0] | local_lock tests |
[ 0.972422][ T0] ---------------------
[ 0.972965][ T0] local_lock inversion 2: ok |
[ 0.974319][ T0] local_lock inversion 3A: ok |
[ 0.975708][ T0] local_lock inversion 3B: ok |
[ 0.977106][ T0] hardirq_unsafe_softirq_safe: ok |
[ 0.978595][ T0]
--------------------------------------------------------------------------
[ 0.979723][ T0] | lockdep_set_subclass() name test|
[ 0.980424][ T0] -----------------------------------
[ 0.981123][ T0] compare name before and after: ok |
[ 0.982423][ T0]
-----------------------------------------------------------------
[ 0.983434][ T0] BUG: 2 unexpected failures (out of 395) -
debugging disabled! |
[ 0.984441][ T0]
-----------------------------------------------------------------
Is this a known issue?
Thanks,
Bart.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Unexpected lockdep selftest failures
2024-11-22 20:18 Unexpected lockdep selftest failures Bart Van Assche
@ 2024-11-24 21:33 ` Palmer Dabbelt
2024-11-26 22:23 ` Boqun Feng
1 sibling, 0 replies; 4+ messages in thread
From: Palmer Dabbelt @ 2024-11-24 21:33 UTC (permalink / raw)
To: bvanassche; +Cc: peterz, mingo, Will Deacon, longman, linux-kernel
On Fri, 22 Nov 2024 12:18:40 PST (-0800), bvanassche@acm.org wrote:
> Hi,
>
> With the for-next branch of this tree: git://git.kernel.dk/linux-block
> (commit 12ab2c13ca77 ("Merge branch 'for-6.13/block' into for-next")) I
> see the following:
>
>
> [ 0.887603][ T0]
> --------------------------------------------------------------------------
> [ 0.888763][ T0] | Wound/wait tests |
> [ 0.889310][ T0] ---------------------
> [ 0.889867][ T0] ww api failures: ok |FAILED|
> ok |
> [ 0.892597][ T0] ww contexts mixing: ok | ok |
> [ 0.894638][ T0] finishing ww context: ok | ok |
> ok | ok |
> [ 0.898020][ T0] locking mismatches: ok | ok |
> ok |
> [ 0.900689][ T0] EDEADLK handling: ok | ok |
> ok | ok | ok | ok | ok | ok | ok | ok |
> [ 0.908172][ T0] spinlock nest unlocked: ok |
> [ 0.909484][ T0] spinlock nest test: ok |
> [ 0.910902][ T0]
> -----------------------------------------------------
> [ 0.911824][ T0] |block | try
> |context|
> [ 0.912970][ T0]
> -----------------------------------------------------
> [ 0.913890][ T0] context: ok | ok |
> ok |
> [ 0.916613][ T0] try: ok | ok |
> ok |
> [ 0.919235][ T0] block: ok | ok |
> ok |
> [ 0.921852][ T0] spinlock: ok | ok
> |FAILED|
> [ 0.924666][ T0]
> --------------------------------------------------------------------------
> [ 0.925852][ T0] | queued read lock tests |
> [ 0.926506][ T0] ---------------------------
> [ 0.927132][ T0] hardirq read-lock/lock-read: ok |
> [ 0.928496][ T0] hardirq lock-read/read-lock: ok |
> [ 0.929860][ T0] hardirq inversion: ok |
> [ 0.931269][ T0] --------------------
> [ 0.931827][ T0] | fs_reclaim tests |
> [ 0.932383][ T0] --------------------
> [ 0.932932][ T0] correct nesting: ok |
> [ 0.934252][ T0] wrong nesting: ok |
> [ 0.935518][ T0] protected nesting: ok |
> [ 0.936784][ T0]
> --------------------------------------------------------------------------
> [ 0.937936][ T0] | wait context tests |
> [ 0.938516][ T0]
> --------------------------------------------------------------------------
> [ 0.939661][ T0] | rcu | raw |
> spin |mutex |
> [ 0.940646][ T0]
> --------------------------------------------------------------------------
> [ 0.941798][ T0] in hardirq context: ok | ok |
> ok | ok |
> [ 0.944946][ T0] in hardirq context (not threaded): ok | ok |
> ok | ok |
> [ 0.948072][ T0] in softirq context: ok | ok |
> ok | ok |
> [ 0.951206][ T0] in RCU context: ok | ok |
> ok | ok |
> [ 0.954345][ T0] in RCU-bh context: ok | ok |
> ok | ok |
> [ 0.957477][ T0] in RCU-sched context: ok | ok |
> ok | ok |
> [ 0.960612][ T0] in RAW_SPINLOCK context: ok | ok |
> ok | ok |
> [ 0.963927][ T0] in SPINLOCK context: ok | ok |
> ok | ok |
> [ 0.967252][ T0] in MUTEX context: ok | ok |
> ok | ok |
> [ 0.970571][ T0]
> --------------------------------------------------------------------------
> [ 0.971702][ T0] | local_lock tests |
> [ 0.972422][ T0] ---------------------
> [ 0.972965][ T0] local_lock inversion 2: ok |
> [ 0.974319][ T0] local_lock inversion 3A: ok |
> [ 0.975708][ T0] local_lock inversion 3B: ok |
> [ 0.977106][ T0] hardirq_unsafe_softirq_safe: ok |
> [ 0.978595][ T0]
> --------------------------------------------------------------------------
> [ 0.979723][ T0] | lockdep_set_subclass() name test|
> [ 0.980424][ T0] -----------------------------------
> [ 0.981123][ T0] compare name before and after: ok |
> [ 0.982423][ T0]
> -----------------------------------------------------------------
> [ 0.983434][ T0] BUG: 2 unexpected failures (out of 395) -
> debugging disabled! |
> [ 0.984441][ T0]
> -----------------------------------------------------------------
>
>
> Is this a known issue?
I just ran into these as well. Looks like there's some discussion over
here <https://lore.kernel.org/all/Zw19sMtnKdyOVQoh@boqun-archlinux/>,
I'm trying to proposed fixes locally...
>
> Thanks,
>
> Bart.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Unexpected lockdep selftest failures
2024-11-22 20:18 Unexpected lockdep selftest failures Bart Van Assche
2024-11-24 21:33 ` Palmer Dabbelt
@ 2024-11-26 22:23 ` Boqun Feng
2024-11-27 7:17 ` Thomas Hellström
1 sibling, 1 reply; 4+ messages in thread
From: Boqun Feng @ 2024-11-26 22:23 UTC (permalink / raw)
To: Bart Van Assche
Cc: Peter Zijlstra, Ingo Molnar, Will Deacon, Waiman Long,
linux-kernel, Thomas Hellström
Hi,
On Fri, Nov 22, 2024 at 12:18:40PM -0800, Bart Van Assche wrote:
> Hi,
>
> With the for-next branch of this tree: git://git.kernel.dk/linux-block
> (commit 12ab2c13ca77 ("Merge branch 'for-6.13/block' into for-next")) I
> see the following:
>
>
> [ 0.887603][ T0]
> --------------------------------------------------------------------------
> [ 0.888763][ T0] | Wound/wait tests |
> [ 0.889310][ T0] ---------------------
> [ 0.889867][ T0] ww api failures: ok |FAILED| ok
> |
> [ 0.892597][ T0] ww contexts mixing: ok | ok |
> [ 0.894638][ T0] finishing ww context: ok | ok | ok
> | ok |
> [ 0.898020][ T0] locking mismatches: ok | ok | ok
> |
> [ 0.900689][ T0] EDEADLK handling: ok | ok | ok
> | ok | ok | ok | ok | ok | ok | ok |
> [ 0.908172][ T0] spinlock nest unlocked: ok |
> [ 0.909484][ T0] spinlock nest test: ok |
> [ 0.910902][ T0] -----------------------------------------------------
> [ 0.911824][ T0] |block | try
> |context|
> [ 0.912970][ T0] -----------------------------------------------------
> [ 0.913890][ T0] context: ok | ok | ok
> |
> [ 0.916613][ T0] try: ok | ok | ok
> |
> [ 0.919235][ T0] block: ok | ok | ok
> |
> [ 0.921852][ T0] spinlock: ok | ok
> |FAILED|
> [ 0.924666][ T0]
> --------------------------------------------------------------------------
> [ 0.925852][ T0] | queued read lock tests |
> [ 0.926506][ T0] ---------------------------
> [ 0.927132][ T0] hardirq read-lock/lock-read: ok |
> [ 0.928496][ T0] hardirq lock-read/read-lock: ok |
> [ 0.929860][ T0] hardirq inversion: ok |
> [ 0.931269][ T0] --------------------
> [ 0.931827][ T0] | fs_reclaim tests |
> [ 0.932383][ T0] --------------------
> [ 0.932932][ T0] correct nesting: ok |
> [ 0.934252][ T0] wrong nesting: ok |
> [ 0.935518][ T0] protected nesting: ok |
> [ 0.936784][ T0]
> --------------------------------------------------------------------------
> [ 0.937936][ T0] | wait context tests |
> [ 0.938516][ T0]
> --------------------------------------------------------------------------
> [ 0.939661][ T0] | rcu | raw | spin
> |mutex |
> [ 0.940646][ T0]
> --------------------------------------------------------------------------
> [ 0.941798][ T0] in hardirq context: ok | ok | ok
> | ok |
> [ 0.944946][ T0] in hardirq context (not threaded): ok | ok | ok
> | ok |
> [ 0.948072][ T0] in softirq context: ok | ok | ok
> | ok |
> [ 0.951206][ T0] in RCU context: ok | ok | ok
> | ok |
> [ 0.954345][ T0] in RCU-bh context: ok | ok | ok
> | ok |
> [ 0.957477][ T0] in RCU-sched context: ok | ok | ok
> | ok |
> [ 0.960612][ T0] in RAW_SPINLOCK context: ok | ok | ok
> | ok |
> [ 0.963927][ T0] in SPINLOCK context: ok | ok | ok
> | ok |
> [ 0.967252][ T0] in MUTEX context: ok | ok | ok
> | ok |
> [ 0.970571][ T0]
> --------------------------------------------------------------------------
> [ 0.971702][ T0] | local_lock tests |
> [ 0.972422][ T0] ---------------------
> [ 0.972965][ T0] local_lock inversion 2: ok |
> [ 0.974319][ T0] local_lock inversion 3A: ok |
> [ 0.975708][ T0] local_lock inversion 3B: ok |
> [ 0.977106][ T0] hardirq_unsafe_softirq_safe: ok |
> [ 0.978595][ T0]
> --------------------------------------------------------------------------
> [ 0.979723][ T0] | lockdep_set_subclass() name test|
> [ 0.980424][ T0] -----------------------------------
> [ 0.981123][ T0] compare name before and after: ok |
> [ 0.982423][ T0]
> -----------------------------------------------------------------
> [ 0.983434][ T0] BUG: 2 unexpected failures (out of 395) - debugging
> disabled! |
> [ 0.984441][ T0]
> -----------------------------------------------------------------
>
>
> Is this a known issue?
>
Yes, these were reported at:
https://lore.kernel.org/lkml/Zw19sMtnKdyOVQoh@boqun-archlinux/
and Thomas (Cced) send an updated version:
https://lore.kernel.org/lkml/20241017151007.92215-1-thomas.hellstrom@linux.intel.com/
, which wasn't picked up. :(
Thomas, could you send a fix ontop? I'm happy to review and test it.
Thanks!
Regards,
Boqun
> Thanks,
>
> Bart.
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: Unexpected lockdep selftest failures
2024-11-26 22:23 ` Boqun Feng
@ 2024-11-27 7:17 ` Thomas Hellström
0 siblings, 0 replies; 4+ messages in thread
From: Thomas Hellström @ 2024-11-27 7:17 UTC (permalink / raw)
To: Boqun Feng, Bart Van Assche
Cc: Peter Zijlstra, Ingo Molnar, Will Deacon, Waiman Long,
linux-kernel
On Tue, 2024-11-26 at 14:23 -0800, Boqun Feng wrote:
> Hi,
>
> On Fri, Nov 22, 2024 at 12:18:40PM -0800, Bart Van Assche wrote:
> > Hi,
> >
> > With the for-next branch of this tree: git://git.kernel.dk/linux-
> > block
> > (commit 12ab2c13ca77 ("Merge branch 'for-6.13/block' into for-
> > next")) I
> > see the following:
> >
> >
> > [ 0.887603][ T0]
> > -------------------------------------------------------------------
> > -------
> > [ 0.888763][ T0] | Wound/wait tests |
> > [ 0.889310][ T0] ---------------------
> > [ 0.889867][ T0] ww api failures: ok
> > |FAILED| ok
> > >
> > [ 0.892597][ T0] ww contexts mixing: ok |
> > ok |
> > [ 0.894638][ T0] finishing ww context: ok |
> > ok | ok
> > > ok |
> > [ 0.898020][ T0] locking mismatches: ok |
> > ok | ok
> > >
> > [ 0.900689][ T0] EDEADLK handling: ok |
> > ok | ok
> > > ok | ok | ok | ok | ok | ok | ok |
> > [ 0.908172][ T0] spinlock nest unlocked: ok |
> > [ 0.909484][ T0] spinlock nest test: ok |
> > [ 0.910902][ T0] --------------------------------------------
> > ---------
> > [ 0.911824][ T0] |block |
> > try
> > > context|
> > [ 0.912970][ T0] --------------------------------------------
> > ---------
> > [ 0.913890][ T0] context: ok |
> > ok | ok
> > >
> > [ 0.916613][ T0] try: ok |
> > ok | ok
> > >
> > [ 0.919235][ T0] block: ok |
> > ok | ok
> > >
> > [ 0.921852][ T0] spinlock: ok |
> > ok
> > > FAILED|
> > [ 0.924666][ T0]
> > -------------------------------------------------------------------
> > -------
> > [ 0.925852][ T0] | queued read lock tests |
> > [ 0.926506][ T0] ---------------------------
> > [ 0.927132][ T0] hardirq read-lock/lock-read: ok |
> > [ 0.928496][ T0] hardirq lock-read/read-lock: ok |
> > [ 0.929860][ T0] hardirq inversion: ok |
> > [ 0.931269][ T0] --------------------
> > [ 0.931827][ T0] | fs_reclaim tests |
> > [ 0.932383][ T0] --------------------
> > [ 0.932932][ T0] correct nesting: ok |
> > [ 0.934252][ T0] wrong nesting: ok |
> > [ 0.935518][ T0] protected nesting: ok |
> > [ 0.936784][ T0]
> > -------------------------------------------------------------------
> > -------
> > [ 0.937936][ T0] | wait context tests |
> > [ 0.938516][ T0]
> > -------------------------------------------------------------------
> > -------
> > [ 0.939661][ T0] | rcu |
> > raw | spin
> > > mutex |
> > [ 0.940646][ T0]
> > -------------------------------------------------------------------
> > -------
> > [ 0.941798][ T0] in hardirq context: ok |
> > ok | ok
> > > ok |
> > [ 0.944946][ T0] in hardirq context (not threaded): ok |
> > ok | ok
> > > ok |
> > [ 0.948072][ T0] in softirq context: ok |
> > ok | ok
> > > ok |
> > [ 0.951206][ T0] in RCU context: ok |
> > ok | ok
> > > ok |
> > [ 0.954345][ T0] in RCU-bh context: ok |
> > ok | ok
> > > ok |
> > [ 0.957477][ T0] in RCU-sched context: ok |
> > ok | ok
> > > ok |
> > [ 0.960612][ T0] in RAW_SPINLOCK context: ok |
> > ok | ok
> > > ok |
> > [ 0.963927][ T0] in SPINLOCK context: ok |
> > ok | ok
> > > ok |
> > [ 0.967252][ T0] in MUTEX context: ok |
> > ok | ok
> > > ok |
> > [ 0.970571][ T0]
> > -------------------------------------------------------------------
> > -------
> > [ 0.971702][ T0] | local_lock tests |
> > [ 0.972422][ T0] ---------------------
> > [ 0.972965][ T0] local_lock inversion 2: ok |
> > [ 0.974319][ T0] local_lock inversion 3A: ok |
> > [ 0.975708][ T0] local_lock inversion 3B: ok |
> > [ 0.977106][ T0] hardirq_unsafe_softirq_safe: ok |
> > [ 0.978595][ T0]
> > -------------------------------------------------------------------
> > -------
> > [ 0.979723][ T0] | lockdep_set_subclass() name test|
> > [ 0.980424][ T0] -----------------------------------
> > [ 0.981123][ T0] compare name before and after: ok |
> > [ 0.982423][ T0]
> > -----------------------------------------------------------------
> > [ 0.983434][ T0] BUG: 2 unexpected failures (out of 395) -
> > debugging
> > disabled! |
> > [ 0.984441][ T0]
> > -----------------------------------------------------------------
> >
> >
> > Is this a known issue?
> >
>
> Yes, these were reported at:
>
>
> https://lore.kernel.org/lkml/Zw19sMtnKdyOVQoh@boqun-archlinux/
>
> and Thomas (Cced) send an updated version:
>
>
> https://lore.kernel.org/lkml/20241017151007.92215-1-thomas.hellstrom@
> linux.intel.com/
>
> , which wasn't picked up. :(
>
> Thomas, could you send a fix ontop? I'm happy to review and test it.
> Thanks!
>
> Regards,
> Boqun
Yes, I'll do that.
For some reason the incorrect version was also queued for stable
backport. I replied to those backport patches and asked them not to be
backported, but has not seen any replies yet.
Thanks,
Thomas
>
> > Thanks,
> >
> > Bart.
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2024-11-27 7:18 UTC | newest]
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2024-11-22 20:18 Unexpected lockdep selftest failures Bart Van Assche
2024-11-24 21:33 ` Palmer Dabbelt
2024-11-26 22:23 ` Boqun Feng
2024-11-27 7:17 ` Thomas Hellström
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