On Thu, Oct 9, 2025 at 4:52 PM Andrew Morton <akpm@linux-foundation.org> wrote:
>
> On Thu, 09 Oct 2025 09:45:33 -0700 syzbot <syzbot+8259e1d0e3ae8ed0c490@syzkaller.appspotmail.com> wrote:
>
> > Hello,
> >
> > syzbot found the following issue on:
> >
> > HEAD commit:    2c95a756e0cf net: pse-pd: tps23881: Fix current measuremen..
> > git tree:       net
> > console output: https://syzkaller.appspot.com/x/log.txt?x=16e1852f980000
> > kernel config:  https://syzkaller.appspot.com/x/.config?x=5bcbbf19237350b5
> > dashboard link: https://syzkaller.appspot.com/bug?extid=8259e1d0e3ae8ed0c490
> > compiler:       Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8
> >
> > Unfortunately, I don't have any reproducer for this issue yet.
> >
> > Downloadable assets:
> > disk image: https://storage.googleapis.com/syzbot-assets/8272657e4298/disk-2c95a756.raw.xz
> > vmlinux: https://storage.googleapis.com/syzbot-assets/4e53ba690f28/vmlinux-2c95a756.xz
> > kernel image: https://storage.googleapis.com/syzbot-assets/6112d620d6fc/bzImage-2c95a756.xz
> >
> > IMPORTANT: if you fix the issue, please add the following tag to the commit:
> > Reported-by: syzbot+8259e1d0e3ae8ed0c490@syzkaller.appspotmail.com
>
> At 2c95a756e0cf, page_owner.c hasn't been modified in a couple of years.
>
> How can add_stack_record_to_list()'s spin_lock_irqsave() be "invalid
> wait context"?  In NMI, yes, but the trace doesn't indicate that we're
> in an NMI.
>
> Confused.  I'm suspecting BPF involvement.  Cc'ed for help, please.

The attached patch should fix it.
There are different options, but this one is the simplest.