linux-kernel - Re: kernel BUG at fs/inode.c:LINE! (2)

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Message-ID: <20240515161537.GP4449@suse.cz>
Date: Wed, 15 May 2024 18:15:37 +0200
From: David Sterba <dsterba@...e.cz>
To: syzbot <syzbot+c92c93d1f1aaaacdb9db@...kaller.appspotmail.com>
Cc: axboe@...nel.dk, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org, maz@...nel.org, oleg@...hat.com,
	peterz@...radead.org, syzkaller-bugs@...glegroups.com,
	viro@...iv.linux.org.uk
Subject: Re: kernel BUG at fs/inode.c:LINE! (2)

On Wed, May 15, 2024 at 09:13:17AM -0700, syzbot wrote:
> > On Fri, Aug 28, 2020 at 06:18:17AM -0700, syzbot wrote:
> >> Hello,
> >> 
> >> syzbot found the following issue on:
> >> 
> >> HEAD commit:    d012a719 Linux 5.9-rc2
> >> git tree:       upstream
> >> console output: https://syzkaller.appspot.com/x/log.txt?x=15aa650e900000
> >> kernel config:  https://syzkaller.appspot.com/x/.config?x=891ca5711a9f1650
> >> dashboard link: https://syzkaller.appspot.com/bug?extid=c92c93d1f1aaaacdb9db
> >> compiler:       clang version 10.0.0 (https://github.com/llvm/llvm-project/ c2443155a0fb245c8f17f2c1c72b6ea391e86e81)
> >> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12ecb939900000
> >> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=140a19a9900000
> >> 
> >> The issue was bisected to:
> >> 
> >> commit a9ed4a6560b8562b7e2e2bed9527e88001f7b682
> >> Author: Marc Zyngier <maz@...nel.org>
> >> Date:   Wed Aug 19 16:12:17 2020 +0000
> >> 
> >>     epoll: Keep a reference on files added to the check list
> >> 
> >> bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=16a50519900000
> >> final oops:     https://syzkaller.appspot.com/x/report.txt?x=15a50519900000
> >> console output: https://syzkaller.appspot.com/x/log.txt?x=11a50519900000
> >> 
> >> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> >> Reported-by: syzbot+c92c93d1f1aaaacdb9db@...kaller.appspotmail.com
> >> Fixes: a9ed4a6560b8 ("epoll: Keep a reference on files added to the check list")
> >> 
> >> ------------[ cut here ]------------
> >> kernel BUG at fs/inode.c:1668!
> >
> > #syz set subsystem: fs
> 
> The specified label "subsystem" is unknown.
> Please use one of the supported labels.

#syz set subsystems: fs