* segmentation faults with kernels >v5.8-rc2
@ 2020-06-29 13:58 Jörg Otte
2020-06-29 18:20 ` Jan Kara
0 siblings, 1 reply; 2+ messages in thread
From: Jörg Otte @ 2020-06-29 13:58 UTC (permalink / raw)
To: Mel Gorman, Jan Kara, Linus Torvalds, Linux Kernel Mailing List
I frequently get segmentation faults in newer kernel >v5.8-rc2 e.g.
Chrome_ChildIOT[1298]: segfault at 40d048 ip 000056111a41970d sp
00007fdced6931b0 error 6 in chrome[561115f64000+785b000]
Bisection gave me the following
first bad commit:
e9c15badbb7b20ccdbadf5da14e0a68fbad51015 is the first bad commit
commit e9c15badbb7b20ccdbadf5da14e0a68fbad51015
Author: Mel Gorman <mgorman@techsingularity.net>
Date: Mon Jun 15 13:13:58 2020 +0100
fs: Do not check if there is a fsnotify watcher on pseudo inodes
...
I double checked by reverting this commit on top of v5.8-rc3 and the
segmentation faults are gone.
Jörg
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: segmentation faults with kernels >v5.8-rc2
2020-06-29 13:58 segmentation faults with kernels >v5.8-rc2 Jörg Otte
@ 2020-06-29 18:20 ` Jan Kara
0 siblings, 0 replies; 2+ messages in thread
From: Jan Kara @ 2020-06-29 18:20 UTC (permalink / raw)
To: Jörg Otte
Cc: Mel Gorman, Jan Kara, Linus Torvalds, Linux Kernel Mailing List
Hello!
On Mon 29-06-20 15:58:50, Jörg Otte wrote:
> I frequently get segmentation faults in newer kernel >v5.8-rc2 e.g.
> Chrome_ChildIOT[1298]: segfault at 40d048 ip 000056111a41970d sp
> 00007fdced6931b0 error 6 in chrome[561115f64000+785b000]
>
> Bisection gave me the following
> first bad commit:
>
> e9c15badbb7b20ccdbadf5da14e0a68fbad51015 is the first bad commit
> commit e9c15badbb7b20ccdbadf5da14e0a68fbad51015
> Author: Mel Gorman <mgorman@techsingularity.net>
> Date: Mon Jun 15 13:13:58 2020 +0100
>
> fs: Do not check if there is a fsnotify watcher on pseudo inodes
> ...
>
> I double checked by reverting this commit on top of v5.8-rc3 and the
> segmentation faults are gone.
We've already reverted that commit today... Thanks for report!
Honza
--
Jan Kara <jack@suse.com>
SUSE Labs, CR
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