From: Tejun Heo <tj@kernel.org>
To: syzbot <syzbot+cef555184e66963dabc2@syzkaller.appspotmail.com>
Cc: boqun.feng@gmail.com, brauner@kernel.org,
cgroups@vger.kernel.org, hannes@cmpxchg.org,
linux-kernel@vger.kernel.org, lizefan.x@bytedance.com,
longman@redhat.com, michael.christie@oracle.com,
mingo@redhat.com, mst@redhat.com, oleg@redhat.com,
peterz@infradead.org, syzkaller-bugs@googlegroups.com,
wander@redhat.com, will@kernel.org
Subject: Re: [syzbot] [cgroups?] possible deadlock in cgroup_free
Date: Sun, 19 Nov 2023 05:12:04 -1000 [thread overview]
Message-ID: <ZVolxA8RHsY11CnE@slm.duckdns.org> (raw)
In-Reply-To: <0000000000009642b4060a4f017f@google.com>
On Thu, Nov 16, 2023 at 05:25:05PM -0800, syzbot wrote:
> syzbot has bisected this issue to:
>
> commit 2d25a889601d2fbc87ec79b30ea315820f874b78
> Author: Peter Zijlstra <peterz@infradead.org>
> Date: Sun Sep 17 11:24:21 2023 +0000
>
> ptrace: Convert ptrace_attach() to use lock guards
Looks like the tasklist_lock conversion in ptrace_attach() forgot _irq.
Peter, Oleg?
Thanks.
--
tejun
next prev parent reply other threads:[~2023-11-19 15:12 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-11-16 11:08 [syzbot] [cgroups?] possible deadlock in cgroup_free syzbot
2023-11-16 14:16 ` syzbot
2023-11-17 1:25 ` syzbot
2023-11-19 15:12 ` Tejun Heo [this message]
2023-11-19 15:30 ` Oleg Nesterov
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