Re: [syzbot] [trace?] linux-next test error: WARNING in rcu_core

[Marco Elver]

On Fri, 2 Aug 2024 at 09:58, syzbot
<syzbot+263726e59eab6b442723@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
>
> Hello,
>
> syzbot found the following issue on:
>
> HEAD commit:    f524a5e4dfb7 Add linux-next specific files for 20240802
> git tree:       linux-next
> console output: https://syzkaller.appspot.com/x/log.txt?x=174c896d980000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=a66a5509e9947c4c
> dashboard link: https://syzkaller.appspot.com/bug?extid=263726e59eab6b442723
> compiler:       Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
>
> Downloadable assets:
> disk image: https://storage.googleapis.com/syzbot-assets/8c0255b9a6ad/disk-f524a5e4.raw.xz
> vmlinux: https://storage.googleapis.com/syzbot-assets/71d89466ea60/vmlinux-f524a5e4.xz
> kernel image: https://storage.googleapis.com/syzbot-assets/ba8fcf059463/bzImage-f524a5e4.xz
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: syzbot+263726e59eab6b442723@xxxxxxxxxxxxxxxxxxxxxxxxx
>
> ------------[ cut here ]------------
> WARNING: CPU: 0 PID: 1 at mm/slub.c:4550 slab_free_after_rcu_debug+0x18b/0x270 mm/slub.c:4550

See https://lore.kernel.org/all/ZqyThs-o85nqueaF@xxxxxxxxxxxxxxxx/T/#u