Re: [syzbot] [overlayfs?] WARNING in fast_dput

[Hillf Danton]

> Date: Sat, 29 Nov 2025 05:05:23 -0800	[thread overview]
> Hello,
> 
> syzbot found the following issue on:
> 
> HEAD commit:    7d31f578f323 Add linux-next specific files for 20251128
> git tree:       linux-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=14db5f42580000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=6336d8e94a7c517d
> dashboard link: https://syzkaller.appspot.com/bug?extid=b74150fd2ef40e716ca2
> compiler:       Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=1780a112580000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=10f6be92580000

#syz test: https://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git vfs.all