linux-kernel - Re: INFO: task hung in btrfs_search

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Message-ID: <20211029133326.GB20319@twin.jikos.cz>
Date:   Fri, 29 Oct 2021 15:33:26 +0200
From:   David Sterba <dsterba@...e.cz>
To:     Filipe Manana <fdmanana@...il.com>
Cc:     Hao Sun <sunhao.th@...il.com>, Chris Mason <clm@...com>,
        David Sterba <dsterba@...e.com>,
        Josef Bacik <josef@...icpanda.com>,
        linux-btrfs <linux-btrfs@...r.kernel.org>,
        Qu Wenruo <quwenruo.btrfs@....com>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: INFO: task hung in btrfs_search_slot

On Wed, Oct 27, 2021 at 04:34:37PM +0100, Filipe Manana wrote:
> On Wed, Oct 27, 2021 at 2:08 PM Hao Sun <sunhao.th@...il.com> wrote:
> >
> > Hello,
> >
> > When using Healer to fuzz the latest Linux kernel, the following crash
> > was triggered.
> 
> This is the same deadlock you reported 3 weeks ago here:
> 
> https://lore.kernel.org/linux-btrfs/CACkBjsax51i4mu6C0C3vJqQN3NR_iVuucoeG3U1HXjrgzn5FFQ@mail.gmail.com/
> 
> There's a fix in the integration branch (David's misc-next branch),
> but it's not yet in any released kernel and not in Linus' tree as
> well:
> 
> https://lore.kernel.org/linux-btrfs/cover.1634115580.git.fdmanana@suse.com/

It'll go to 5.15 pull and the fix is tagged for 5.14 stable so it'll be
in some release in the 5.15-rc1 timeframe.