[issue45119] test_signal.test_itimer_virtual() failed on AMD64 Fedora Rawhide: Linux kernel 5.15 regression

[STINNER Victor]

STINNER Victor  added the comment:

And the ppc64e machine runs 5.15.0-0.rc4.33.fc36.ppc64le.

This machine was stuck at kernel 5.7, I'm not sure why. I had to regenerate the 
grub2 configuration.

Ok, all Rawhide buildbots should now run a kernel 5.15 without the 
ITIMER_VIRTUAL bug. I close the issue.

--
resolution:  -> fixed
stage:  -> resolved
status: open -> closed

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[issue45119] test_signal.test_itimer_virtual() failed on AMD64 Fedora Rawhide: Linux kernel 5.15 regression

[STINNER Victor]

STINNER Victor  added the comment:

I upgraded Fedora Rawhide machines:

* x86-64 now runs: 5.15.0-0.rc4.33.fc36.x86_64
* aarch64 now runs: 5.15.0-0.rc4.33.fc36.aarch64

I also disabled systemd-coredump:
---
$ cat /etc/sysctl.d/50-coredump.conf 
# Disable systemd-coredump
kernel.core_pattern=

$ cat /proc/sys/kernel/core_pattern 
---

core_pattern is now empty.

Previously, /run was out of available inodes because systemd-coredump created 
one file per crash in /run/systemd/propagate/.

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[issue45119] test_signal.test_itimer_virtual() failed on AMD64 Fedora Rawhide: Linux kernel 5.15 regression

[STINNER Victor]

STINNER Victor  added the comment:

The fix is part of Linux kernel v5.15-rc3:
https://github.com/torvalds/linux/commit/8cd9da85d2bd87ce889043e7b1735723dd10eb89#diff-40ae7979f67be398216a482f7b3937f9847a79e626665082886fb63e898b5247

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[issue45119] test_signal.test_itimer_virtual() failed on AMD64 Fedora Rawhide: Linux kernel 5.15 regression

[STINNER Victor]

STINNER Victor  added the comment:

Update: Frederic Weisbecker proposed a kernel fix:
https://lkml.org/lkml/2021/9/13/1647

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[issue45119] test_signal.test_itimer_virtual() failed on AMD64 Fedora Rawhide: Linux kernel 5.15 regression

[STINNER Victor]

STINNER Victor  added the comment:

Python 3.10 is also affected. Example with aarch64 Fedora Rawhide 3.10:
https://buildbot.python.org/all/#builders/636/builds/286

--
title: test_signal.test_itimer_virtual() failed on AMD64 Fedora Rawhide 3.x: 
Linux kernel 5.15 regression -> test_signal.test_itimer_virtual() failed on 
AMD64 Fedora Rawhide: Linux kernel 5.15 regression
versions: +Python 3.10

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