Re: [syzbot] WARNING: stack going in the wrong direction? at __sys_setsockopt

On Thu, 16 Feb 2023 at 11:00, syzbot
[off-list ref] wrote:

Hello,

syzbot found the following issue on:

HEAD commit:    9d9019bcea1a Add linux-next specific files for 20230215
git tree:       linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=11ad7710c80000
kernel config:  https://syzkaller.appspot.com/x/.config?x=60f48e09dc64b527
dashboard link: https://syzkaller.appspot.com/bug?extid=91c3651bb190d53b4d16
compiler:       gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/7a22fa9fb779/disk-9d9019bc.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/68851ce42fd7/vmlinux-9d9019bc.xz
kernel image: https://storage.googleapis.com/syzbot-assets/09be0a2c410b/bzImage-9d9019bc.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+91c3651bb190d53b4d16@syzkaller.appspotmail.com

WARNING: stack going in the wrong direction? at __sys_setsockopt+0x2c6/0x5b0 net/socket.c:2271

+Josh, Ingo,

Yesterday we started seeing lots of "stack going in the wrong
direction" all over the kernel.

I see there is only your recent commit to ORC unwinder:
"x86/unwind/orc: Add 'signal' field to ORC metadata"

Can it be related?

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