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From: syzbot <syzbot+cef555184e66963dabc2@syzkaller.appspotmail.com>
To: 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,
	tj@kernel.org, wander@redhat.com,  will@kernel.org
Subject: Re: [syzbot] [cgroups?] possible deadlock in cgroup_free
Date: Thu, 16 Nov 2023 17:25:05 -0800	[thread overview]
Message-ID: <0000000000009642b4060a4f017f@google.com> (raw)
In-Reply-To: <000000000000f5b0d0060a430995@google.com>

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

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=130edb3f680000
start commit:   f31817cbcf48 Add linux-next specific files for 20231116
git tree:       linux-next
final oops:     https://syzkaller.appspot.com/x/report.txt?x=108edb3f680000
console output: https://syzkaller.appspot.com/x/log.txt?x=170edb3f680000
kernel config:  https://syzkaller.appspot.com/x/.config?x=f59345f1d0a928c
dashboard link: https://syzkaller.appspot.com/bug?extid=cef555184e66963dabc2
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=13fd7920e80000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=17d80920e80000

Reported-by: syzbot+cef555184e66963dabc2@syzkaller.appspotmail.com
Fixes: 2d25a889601d ("ptrace: Convert ptrace_attach() to use lock guards")

For information about bisection process see: https://goo.gl/tpsmEJ#bisection

  parent reply	other threads:[~2023-11-17  1:25 UTC|newest]

Thread overview: 7+ 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 [this message]
2023-11-19 15:12   ` Tejun Heo
2023-11-19 15:30     ` Oleg Nesterov
2023-11-17 10:58 ` [syzbot] Test syzbot
     [not found] <CAJjsb4rUe+sOAY_rbUZuyHFKQzmo4TGvOhZsHF_T+8zjw6CBrA@mail.gmail.com>
2023-11-17 11:53 ` [syzbot] [cgroups?] possible deadlock in cgroup_free syzbot

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