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Bug 934479 - sys-kernel/vanilla-sources-6.9.5 segfaults on resume after suspend on Ryzen Zen4
Summary: sys-kernel/vanilla-sources-6.9.5 segfaults on resume after suspend on Ryzen Zen4
Status: UNCONFIRMED
Alias: None
Product: Gentoo Linux
Classification: Unclassified
Component: Current packages (show other bugs)
Hardware: All Linux
: Normal normal (vote)
Assignee: Gentoo Kernel Bug Wranglers and Kernel Maintainers
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Whiteboard:
Keywords:
Depends on:
Blocks:
 
Reported: 2024-06-17 21:23 UTC by Mustafa Ahmed
Modified: 2024-06-21 11:57 UTC (History)
0 users

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Runtime testing required: ---

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Description Mustafa Ahmed 2024-06-17 21:23:30 UTC 
Rebuilt the kernel with an existing config from 6.9.4 and didn't notice anything wrong, until the next day when I resumed after suspending overnight. 
Some execs like vim were segfaulting, whereas rsyng was giving bogus errors. This only happened with execs compiled with zen4 flags. I tested the same execs for a different CPU (Skylake) on the same CPU and no segfault.

No new hardware attached.

Reproducible: Always

Steps to Reproduce:
1. Run 6.9.5 kernel on ryzen
2. suspend
3. resume
Comment 1 Greg Kubaryk 2024-06-17 22:46:18 UTC 
Gentoo doesn't make any changes to the vanilla sources, so hopefully you've reported this upstream. We need at least an 'emerge --info' for the Gentoo side.
Comment 2 Mike Pagano gentoo-dev 2024-06-21 11:57:28 UTC 
I wonder what's in the segfault