Re: kernel panic: stack is corrupted in lock_release (2)

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On Sun, Sep 1, 2019 at 4:27 PM syzbot
<syzbot+97deee97cf14574b96d0@xxxxxxxxxxxxxxxxxxxxxxxxx> wrote:
>
> Hello,
>
> syzbot found the following crash on:
>
> HEAD commit:    dd7078f0 enetc: Add missing call to 'pci_free_irq_vectors(..
> git tree:       net
> console output: https://syzkaller.appspot.com/x/log.txt?x=115fe0fa600000
> kernel config:  https://syzkaller.appspot.com/x/.config?x=2a6a2b9826fdadf9
> dashboard link: https://syzkaller.appspot.com/bug?extid=97deee97cf14574b96d0
> compiler:       gcc (GCC) 9.0.0 20181231 (experimental)
> syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=11f7c2fe600000

Stack corruption + bpf maps in repro triggers some bells. +bpf mailing list.

> IMPORTANT: if you fix the bug, please add the following tag to the commit:
> Reported-by: syzbot+97deee97cf14574b96d0@xxxxxxxxxxxxxxxxxxxxxxxxx
>
> Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in:
> lock_release+0x866/0x960 kernel/locking/lockdep.c:4435
> CPU: 0 PID: 9965 Comm: syz-executor.0 Not tainted 5.3.0-rc6+ #182
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS
> Google 01/01/2011
> Call Trace:
> Kernel Offset: disabled
> Rebooting in 86400 seconds..
>
>
> ---
> This bug is generated by a bot. It may contain errors.
> See https://goo.gl/tpsmEJ for more information about syzbot.
> syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx.
>
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>
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