On 2/3/25 10:57, syzbot wrote:

Hello,

syzbot found the following issue on:

HEAD commit:    c2933b2befe2 Merge tag 'net-6.14-rc1' of git://git.kernel...
git tree:       net-next
console output: https://syzkaller.appspot.com/x/log.txt?x=16f676b0580000
kernel config:  https://syzkaller.appspot.com/x/.config?x=d033b14aeef39158
dashboard link: https://syzkaller.appspot.com/bug?extid=9d55b199192a4be7d02c
compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=13300b24580000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=12418518580000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/c7667ae12603/disk-c2933b2b.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/944ca63002c1/vmlinux-c2933b2b.xz
kernel image: https://storage.googleapis.com/syzbot-assets/30748115bf0b/bzImage-c2933b2b.xz

The issue was bisected to:

commit fcdd2242c0231032fc84e1404315c245ae56322a
Author: Michal Luczaj [off-list ref]
Date:   Tue Jan 28 13:15:27 2025 +0000

    vsock: Keep the binding until socket destruction

bisection log:  https://syzkaller.appspot.com/x/bisect.txt?x=148f5ddf980000
final oops:     https://syzkaller.appspot.com/x/report.txt?x=168f5ddf980000
console output: https://syzkaller.appspot.com/x/log.txt?x=128f5ddf980000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+9d55b199192a4be7d02c@syzkaller.appspotmail.com
Fixes: fcdd2242c023 ("vsock: Keep the binding until socket destruction")

Oops: general protection fault, probably for non-canonical address 0xdffffc0000000003: 0000 [#1] PREEMPT SMP KASAN PTI
...

Let me take a look.

Michal