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Date: Mon, 21 Nov 2022 16:40:48 +0100 From: Jan Kara <jack@...e.cz> To: Thorsten Leemhuis <regressions@...mhuis.info> Cc: Jan Kara <jack@...e.cz>, Jeremi Piotrowski <jpiotrowski@...ux.microsoft.com>, Thilo Fromm <t-lo@...ux.microsoft.com>, Ye Bin <yebin10@...wei.com>, jack@...e.com, tytso@....edu, linux-ext4@...r.kernel.org, regressions@...ts.linux.dev Subject: Re: [syzbot] possible deadlock in jbd2_journal_lock_updates On Mon 21-11-22 16:18:09, Thorsten Leemhuis wrote: > On 21.11.22 16:00, Jan Kara wrote: > > OK, attached patch fixes the deadlock for me. Can you test whether it fixes > > the problem for you as well? Thanks! > > Jan, many thx for taking care of this. There is one small thing to > improve, please add the following tags to your patch: > > Link: > https://lore.kernel.org/r/c77bf00f-4618-7149-56f1-b8d1664b9d07@linux.microsoft.com/ Good point. Thanks, added! > Not sure, maybe a reported-by for Syzbot would be good as well, see: > https://lore.kernel.org/linux-ext4/000000000000892a3005e5b5d96c@google.com/ The syzbot report is actually unrelated. So far I think that the bisection that landed guys on the same commit as syzbot was just luck or maybe change in timing that made the problem easier to reproduce. Honza -- Jan Kara <jack@...e.com> SUSE Labs, CR
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