Re: [syzbot] [bluetooth?] general protection fault in hci_uart_tty_ioctl

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On Tue, Jul 18, 2023 at 9:45 PM Jakub Kicinski <kuba@xxxxxxxxxx> wrote:
>
> On Mon, 17 Jul 2023 13:22:24 -0700 syzbot wrote:
> > syzbot suspects this issue was fixed by commit:
> >
> > commit d772781964415c63759572b917e21c4f7ec08d9f
> > Author: Jakub Kicinski <kuba@xxxxxxxxxx>
> > Date:   Fri Jan 6 06:33:54 2023 +0000
> >
> >     devlink: bump the instance index directly when iterating
>
> Hm, don't think so. It's not the first issue where syzbot decided
> this commit was the resolution. I wonder what makes it special.

Judging by the bisection log, the commit fixed some "INFO: rcu
detected stall in" error that was also triggerable by the reproducer.
Though for me it's not clear how exactly -- at least the reproducer
does not seem to be interacting with devlink..

-- 
Aleksandr


>
> --




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