linux-kernel - Re: [syzbot] [hfs?] possible deadlock in hfs_extend

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Date: Tue, 02 Jan 2024 16:40:05 -0800
From: syzbot <syzbot+41a88b825a315aac2254@...kaller.appspotmail.com>
To: akpm@...ux-foundation.org, eadavis@...com, ernesto.mnd.fernandez@...il.com, 
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org, 
	syzkaller-bugs@...glegroups.com, torvalds@...ux-foundation.org, 
	willy@...radead.org
Subject: Re: [syzbot] [hfs?] possible deadlock in hfs_extend_file (2)

syzbot has bisected this issue to:

commit 54640c7502e5ed41fbf4eedd499e85f9acc9698f
Author: Ernesto A. Fernández <ernesto.mnd.fernandez@...il.com>
Date:   Tue Oct 30 22:06:17 2018 +0000

    hfs: prevent btree data loss on ENOSPC

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=1121e49ae80000
start commit:   610a9b8f49fb Linux 6.7-rc8
git tree:       upstream
final oops:     https://syzkaller.appspot.com/x/report.txt?x=1321e49ae80000
console output: https://syzkaller.appspot.com/x/log.txt?x=1521e49ae80000
kernel config:  https://syzkaller.appspot.com/x/.config?x=247b5a935d307ee5
dashboard link: https://syzkaller.appspot.com/bug?extid=41a88b825a315aac2254
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1552fe19e80000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1419bcade80000

Reported-by: syzbot+41a88b825a315aac2254@...kaller.appspotmail.com
Fixes: 54640c7502e5 ("hfs: prevent btree data loss on ENOSPC")

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