Re: [syzbot] [udf?] WARNING in udf_map_block

From: syzbot

Date: Tue Oct 27 2026 - 11:57:08 EST


syzbot has bisected this issue to:

commit 62333e480d12ab186f89fe2725b372d12f72d5eb
Author: Jan Kara <jack@xxxxxxx>
Date: Thu Jul 30 10:42:29 2026 +0000

udf: Fix data loss when converting inline inodes to out of line

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1422482d580000
start commit: d135ab453a74 Merge tag 'backlight-next-7.4' of git://git.k..
git tree: upstream
final oops: https://syzkaller.appspot.com/x/report.txt?x=1622482d580000
console output: https://syzkaller.appspot.com/x/log.txt?x=1222482d580000
kernel config: https://syzkaller.appspot.com/x/.config?x=b990d88b41ee3220
dashboard link: https://syzkaller.appspot.com/bug?extid=de2fef01040748da6822
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16c93721580000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16146469580000

Reported-by: syzbot+de2fef01040748da6822@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 62333e480d12 ("udf: Fix data loss when converting inline inodes to out of line")

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