From: Peter Zijlstra <peterz@infradead.org>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: syzbot <syzbot+56dc65adbd1d2ae1f844@syzkaller.appspotmail.com>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
syzkaller-bugs@googlegroups.com,
Boqun Feng <boqun.feng@gmail.com>
Subject: Re: [syzbot] [mm?] WARNING: locking bug in __set_page_owner
Date: Tue, 5 Nov 2024 10:00:48 +0100 [thread overview]
Message-ID: <20241105090048.GZ9767@noisy.programming.kicks-ass.net> (raw)
In-Reply-To: <20241104193345.94e0d057a6b16dfb9d83a3fc@linux-foundation.org>
On Mon, Nov 04, 2024 at 07:33:45PM -0800, Andrew Morton wrote:
> On Sun, 03 Nov 2024 08:49:26 -0800 syzbot <syzbot+56dc65adbd1d2ae1f844@syzkaller.appspotmail.com> wrote:
>
> > Hello,
> >
> > syzbot found the following issue on:
>
> Help. I don't understand this lockdep report.
> add_stack_record_to_list() is taking spin_lock_irqsave(stack_list_lock)
> from within softirq. all seems well?
spinlock_t from hardirq context, which is not fine. Should be
raw_spinlock_t.
Anyway, I send a proposal for this one yesterday, and so far nobody
seems to have screamed murder, so I suppose I'll make it compiler and
send out proper.
https://lkml.kernel.org/r/20241104114506.GC24862@noisy.programming.kicks-ass.net
next prev parent reply other threads:[~2024-11-05 9:00 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-11-03 16:49 syzbot
2024-11-05 3:33 ` Andrew Morton
2024-11-05 9:00 ` Peter Zijlstra [this message]
2024-12-22 22:58 ` syzbot
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