From: Chris Wilson <chris@chris-wilson.co.uk>
To: linux-kernel@vger.kernel.org, linux-tip-commits@vger.kernel.org,
tip-bot2 for Peter Zijlstra <tip-bot2@linutronix.de>
Cc: Qian Cai <cai@redhat.com>,
Peter Zijlstra (Intel) <peterz@infradead.org>,
x86 <x86@kernel.org>, LKML <linux-kernel@vger.kernel.org>
Subject: Re: [tip: locking/core] lockdep: Fix usage_traceoverflow
Date: Tue, 27 Oct 2020 11:29:35 +0000 [thread overview]
Message-ID: <160379817513.29534.880306651053124370@build.alporthouse.com> (raw)
In-Reply-To: <160208761332.7002.17400661713288945222.tip-bot2@tip-bot2>
Quoting tip-bot2 for Peter Zijlstra (2020-10-07 17:20:13)
> The following commit has been merged into the locking/core branch of tip:
>
> Commit-ID: 24d5a3bffef117ed90685f285c6c9d2faa3a02b4
> Gitweb: https://git.kernel.org/tip/24d5a3bffef117ed90685f285c6c9d2faa3a02b4
> Author: Peter Zijlstra <peterz@infradead.org>
> AuthorDate: Wed, 30 Sep 2020 11:49:37 +02:00
> Committer: Peter Zijlstra <peterz@infradead.org>
> CommitterDate: Wed, 07 Oct 2020 18:14:17 +02:00
>
> lockdep: Fix usage_traceoverflow
>
> Basically print_lock_class_header()'s for loop is out of sync with the
> the size of of ->usage_traces[].
We're hitting a problem,
$ cat /proc/lockdep_stats
upon boot generates:
[ 29.465702] DEBUG_LOCKS_WARN_ON(debug_atomic_read(nr_unused_locks) != nr_unused)
[ 29.465716] WARNING: CPU: 0 PID: 488 at kernel/locking/lockdep_proc.c:256 lockdep_stats_show+0xa33/0xac0
that bisected to this patch. Only just completed the bisection and
thought you would like a heads up.
-Chris
next prev parent reply other threads:[~2020-10-27 11:29 UTC|newest]
Thread overview: 35+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-29 14:31 lockdep null-ptr-deref Qian Cai
2020-09-29 23:08 ` Boqun Feng
2020-09-30 9:16 ` Peter Zijlstra
2020-09-30 9:49 ` Peter Zijlstra
2020-09-30 12:18 ` Boqun Feng
2020-09-30 19:02 ` Peter Zijlstra
2020-10-02 12:36 ` Boqun Feng
2020-10-02 13:09 ` Peter Zijlstra
2020-10-02 13:35 ` Boqun Feng
2020-10-02 10:06 ` Peter Zijlstra
2020-10-02 13:40 ` Qian Cai
2020-10-07 16:20 ` [tip: locking/core] lockdep: Fix usage_traceoverflow tip-bot2 for Peter Zijlstra
2020-10-27 11:29 ` Chris Wilson [this message]
2020-10-27 11:59 ` Peter Zijlstra
2020-10-27 12:30 ` Peter Zijlstra
2020-10-27 12:48 ` Peter Zijlstra
2020-10-27 14:13 ` Chris Wilson
2020-10-31 11:30 ` [tip: locking/urgent] lockdep: Fix nr_unused_locks accounting tip-bot2 for Peter Zijlstra
2020-10-27 13:29 ` [tip: locking/core] lockdep: Fix usage_traceoverflow Chris Wilson
2020-10-27 15:45 ` Peter Zijlstra
2020-10-27 16:34 ` Chris Wilson
2020-10-28 17:40 ` Chris Wilson
2020-10-28 18:06 ` Chris Wilson
2020-10-28 19:42 ` Peter Zijlstra
2020-10-28 19:59 ` Peter Zijlstra
2020-10-30 3:51 ` Boqun Feng
2020-10-30 9:38 ` Peter Zijlstra
2020-10-30 9:55 ` Peter Zijlstra
2020-11-02 5:37 ` [PATCH 1/2] lockdep: Avoid to modify chain keys in validate_chain() Boqun Feng
2020-11-02 5:37 ` [PATCH 2/2] lockdep/selftest: Add spin_nest_lock test Boqun Feng
2020-12-03 10:35 ` [tip: locking/core] " tip-bot2 for Boqun Feng
2020-11-05 6:25 ` [PATCH 1/2] lockdep: Avoid to modify chain keys in validate_chain() Boqun Feng
2020-11-10 17:28 ` Peter Zijlstra
2020-11-11 8:23 ` [tip: locking/urgent] " tip-bot2 for Boqun Feng
2020-10-09 7:58 ` [tip: locking/core] lockdep: Fix usage_traceoverflow tip-bot2 for Peter Zijlstra
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