Re: [syzbot] [kernel?] possible deadlock in __hrtimer_run_queues

From: Ido Schimmel
Date: Sun May 14 2023 - 02:48:27 EST


On Sat, May 13, 2023 at 09:34:12PM +0200, Thomas Gleixner wrote:
> On Sat, May 13 2023 at 12:37, Ido Schimmel wrote:
> > Thomas, I applied the fix on top of net-next (which includes
> > 0af462f19e63). I'm getting the splat below during boot and then the
> > systems hangs.
>
> Because I'm a moron. I got the same splat while testing, fixed it on the
> test machine and then did not sync it back before sending...
>
> Updated fix which also replaces GFP_ATOMIC with __GFP_HIGH to prevent
> the allocator to wake up the swap daemons, which causes yet another lock
> inversion issue.

Looks good now. Feel free to add:

Tested-by: Ido Schimmel <idosch@xxxxxxxxxx>

Thanks a lot!