From: Mark Brown <broonie@kernel.org>
To: Peter Zijlstra <peterz@infradead.org>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>,
Ingo Molnar <mingo@redhat.com>, Will Deacon <will@kernel.org>,
Boqun Feng <boqun.feng@gmail.com>,
Waiman Long <longman@redhat.com>,
linux-kernel@vger.kernel.org, Aishwarya.TCV@arm.com
Subject: Re: [PATCH 1/3] rwsem: Remove the list_head from struct rw_semaphore
Date: Thu, 19 Mar 2026 13:47:04 +0000 [thread overview]
Message-ID: <3cc82bae-9d87-438d-b134-e7d75d116cf7@sirena.org.uk> (raw)
In-Reply-To: <20260318202851.GL3738010@noisy.programming.kicks-ass.net>
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On Wed, Mar 18, 2026 at 09:28:51PM +0100, Peter Zijlstra wrote:
> On Wed, Mar 18, 2026 at 07:07:24PM +0000, Mark Brown wrote:
> > On Thu, Mar 05, 2026 at 07:55:41PM +0000, Matthew Wilcox (Oracle) wrote:
> > In the past few days we've started seeing lockups when running LTP on
> > -next on a range of arm64 platforms which bisect to this patch. It
> > looks like corruption of some kind, the exact trigger varies but it's
> > very predictable that something goes wrong and we get lots of rwsem
> > related backtraces which do seem relevant to this commmit. This one
> > seems reasonably typical:
> I merged the fix in todays branch:
> https://lkml.kernel.org/r/177382097549.1647592.8219974128268935080.tip-bot2@tip-bot2
Ah, excellent timing :/ - I'll let you know if there are still issues
going forwards.
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next prev parent reply other threads:[~2026-03-19 13:47 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-05 19:55 [PATCH 0/3] Shrink size of sleeping locks Matthew Wilcox (Oracle)
2026-03-05 19:55 ` [PATCH 1/3] rwsem: Remove the list_head from struct rw_semaphore Matthew Wilcox (Oracle)
2026-03-09 19:48 ` [tip: locking/core] locking/rwsem: " tip-bot2 for Matthew Wilcox (Oracle)
2026-03-14 0:03 ` Andrei Vagin
2026-03-18 19:07 ` [PATCH 1/3] rwsem: " Mark Brown
2026-03-18 20:28 ` Peter Zijlstra
2026-03-19 13:47 ` Mark Brown [this message]
2026-03-05 19:55 ` [PATCH 2/3] semaphore: Remove the list_head from struct semaphore Matthew Wilcox (Oracle)
2026-03-09 19:48 ` [tip: locking/core] locking/semaphore: " tip-bot2 for Matthew Wilcox (Oracle)
2026-03-05 19:55 ` [PATCH 3/3] mutex: Remove the list_head from struct mutex Matthew Wilcox (Oracle)
2026-03-07 0:30 ` kernel test robot
2026-03-09 19:48 ` [tip: locking/core] locking/mutex: " tip-bot2 for Matthew Wilcox (Oracle)
2026-03-06 10:14 ` [PATCH 0/3] Shrink size of sleeping locks Peter Zijlstra
2026-03-09 19:48 ` [tip: locking/core] locking/rwsem: Add context analysis tip-bot2 for Peter Zijlstra
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