Re: [syzbot] [gfs2?] WARNING: suspicious RCU usage in gfs2_permission

From: syzbot
Date: Fri Oct 20 2023 - 03:10:43 EST


syzbot has bisected this issue to:

commit 0abd1557e21c617bd13fc18f7725fc6363c05913
Author: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Date: Mon Oct 2 02:33:44 2023 +0000

gfs2: fix an oops in gfs2_permission

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=10b21c33680000
start commit: 2dac75696c6d Add linux-next specific files for 20231018
git tree: linux-next
final oops: https://syzkaller.appspot.com/x/report.txt?x=12b21c33680000
console output: https://syzkaller.appspot.com/x/log.txt?x=14b21c33680000
kernel config: https://syzkaller.appspot.com/x/.config?x=6f8545e1ef7a2b66
dashboard link: https://syzkaller.appspot.com/bug?extid=3e5130844b0c0e2b4948
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=101c8d09680000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11a07475680000

Reported-by: syzbot+3e5130844b0c0e2b4948@xxxxxxxxxxxxxxxxxxxxxxxxx
Fixes: 0abd1557e21c ("gfs2: fix an oops in gfs2_permission")

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