2023-08-09 22:07:29

by Thomas Weißschuh

Subject: Re: few dozen pollfress.t segfaults messages in system log

On 2023-08-09 21:45:57+0200, Toralf Förster wrote:
> I got a bunch of
>
> $ grep pollfree messages
> Aug 9 02:10:14 mr-fox kernel: pollfree.t[18582]: segfault at 10b ip
> 0000563c9619b373 sp 00007f69511a2eb0 error 4 in
> pollfree.t[563c9619a000+3000] likely on CPU 14 (core 14, socket 0)
> Aug 9 02:10:14 mr-fox kernel: pollfree.t[18594]: segfault at 10b ip
> 0000563c9619b373 sp 00007f69511a2eb0 error 4 in
> pollfree.t[563c9619a000+3000] likely on CPU 4 (core 4, socket 0)
> Aug 9 02:10:14 mr-fox kernel: pollfree.t[18597]: segfault at 10b ip
> 0000563c9619b373 sp 00007f69511a2eb0 error 4 in
> pollfree.t[563c9619a000+3000] likely on CPU 11 (core 11, socket 0)
> Aug 9 02:10:14 mr-fox kernel: pollfree.t[18601]: segfault at 10b ip
> 0000563c9619b373 sp 00007f69511a2eb0 error 4 in
> pollfree.t[563c9619a000+3000] likely on CPU 26 (core 10, socket 0)
>
> last night with kernel 6.4.9 at a stable hardened Gentoo Linux:
>
> Linux p14s 6.1.44 #34 SMP Tue Aug 8 21:43:00 CEST 2023 x86_64 AMD Ryzen
> 7 PRO 6850U with Radeon Graphics AuthenticAMD GNU/Linux
>
> I do wonder if those messages are related to the host kernel or if they
> are coming from a buggy app within one of the images of the build bot I
> do run at that machine ?

Probably from the "pollfree" test of liburing [0].

Thomas

[0] https://github.com/axboe/liburing/blob/master/test/pollfree.c

2023-08-09 22:08:40

by Toralf Förster

Subject: Re: few dozen pollfress.t segfaults messages in system log

On 8/9/23 23:07, Thomas Weißschuh wrote:
> Probably from the "pollfree" test of liburing [0].
>
> Thomas
>
> [0]https://github.com/axboe/liburing/blob/master/test/pollfree.c

Indeed, matches this:

/home/tinderbox/run/17.1_desktop_gnome_test-20230807-075536/var/log/emerge.log
2023-08-09T02:12:59 >>> sys-libs/liburing-2.4: 1 minute, 46 seconds

--
Toralf