Re: [syzbot] [gfs2?] general protection fault in _find_first_zero_bit

From: syzbot

Date: Mon Aug 03 2026 - 05:30:35 EST


Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-by: syzbot+cb79de2cc8b76fbf474f@xxxxxxxxxxxxxxxxxxxxxxxxx
Tested-by: syzbot+cb79de2cc8b76fbf474f@xxxxxxxxxxxxxxxxxxxxxxxxx

Tested on:

commit: b7d16f69 gfs2: mark the VFS superblock read-only befor..
git tree: https://github.com/yutao-intel/linux.git fix-gfs2
console output: https://syzkaller.appspot.com/x/log.txt?x=151bbdb9580000
kernel config: https://syzkaller.appspot.com/x/.config?x=86ba763b42fa66a
dashboard link: https://syzkaller.appspot.com/bug?extid=cb79de2cc8b76fbf474f
compiler: Debian clang version 22.1.8 (++20260613092233+e80beda6e255-1~exp1~20260613092250.77), Debian LLD 22.1.8

Note: no patches were applied.
Note: testing is done by a robot and is best-effort only.