linux-kernel - Re: general protection fault in css_release_work

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Date:   Mon, 15 Mar 2021 14:10:38 +0100
From:   Christian Hesse <list@...rm.de>
To:     linux-kernel@...r.kernel.org
Subject: Re: general protection fault in css_release_work_fn()

Hello everybody,

Christian Hesse <list@...rm.de> on Tue, 2021/03/02 09:34:
> I see this on a git server with lots of ssh logins. It happens every few
> hours to days. No idea how to reproduce, guess it's a race condition?
> 
> general protection fault, probably for non-canonical address
> 0xdead000000000122: 0000 [#1] SMP NOPTI CPU: 3 PID: 2213757 Comm:
> kworker/3:2 Not tainted 5.10.18-1-lts #1

I've seen more crashes with 5.10.23-1-lts and 5.11.6-arch1-1. Looks like
5.11.2-arch1-1 is stable for now, but I did not test everything in between.

Anybody has an idea what commit could have caused this?
-- 
main(a){char*c=/*    Schoene Gruesse                         */"B?IJj;MEH"
"CX:;",b;for(a/*    Best regards             my address:    */=0;b=c[a++];)
putchar(b-1/(/*    Chris            cc -ox -xc - && ./x    */b/42*2-3)*42);}

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