Re: [syzbot] [kernel?] general protection fault in put_pid_ns

[Christian Brauner]

On Wed, Nov 12, 2025 at 08:27:32PM -0800, syzbot wrote:
> Hello,
> 
> syzbot found the following issue on:
> 
> HEAD commit:    b179ce312baf Add linux-next specific files for 20251112
> git tree:       linux-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=16e83c12580000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=94a763b28bedecbc
> dashboard link: https://syzkaller.appspot.com/bug?extid=983e44006c89c92789a4
> 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=113a8692580000
> C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=12f017cd980000
> 
> Downloadable assets:
> disk image: https://storage.googleapis.com/syzbot-assets/e65122f908cc/disk-b179ce31.raw.xz
> vmlinux: https://storage.googleapis.com/syzbot-assets/af947f05c76b/vmlinux-b179ce31.xz
> kernel image: https://storage.googleapis.com/syzbot-assets/6678ef895114/bzImage-b179ce31.xz
> 
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+983e44006c89c92789a4@xxxxxxxxxxxxxxxxxxxxxxxxx

#syz test: https://github.com/brauner/linux.git namespace-6.19