Hello Aleksander and Michael,
28.07.2026 05:24, Michael Paquier пишет:
On Mon, Jul 27, 2026 at 04:36:24PM +0300, Aleksander Alekseev wrote:
AI suggests the new behavior is caused by the "io_uring: use region api
for SQ/CQ" change landed in the kernel version 6.14.
No idea about the AI argument, but..
Two cents: I'm on Ubuntu 24.04 with Linux 6.14.0-37-generic and
liburing 2.5 and the tests pass fine for me.
You are not alone. Various buildfarm members are also turning red
with random failures across multiple tests because of this issue.
I think, I've found the difference -- on Debian I'm seeing:
user@debian:~$ ulimit -l
8192
vs
vagrant@ubuntu:~$ ulimit -l
2044616
Thus, with "ulimit -l 8192" set on Ubuntu 24.04, I've got the aio failures
there as well:
Linux ubuntu 6.14.0-37-generic #37~24.04.1-Ubuntu SMP PREEMPT_DYNAMIC Thu Nov 20 10:25:38 UTC 2 x86_64 x86_64 x86_64
GNU/Linux
$ meson test test_aio_* -j 30
...
Ok: 101
Expected Fail: 0
Fail: 19
Unexpected Pass: 0
Also reproduced on Fedora, with:
Linux localhost.localdomain 6.17.10-100.fc41.x86_64 #1 SMP PREEMPT_DYNAMIC Mon
Dec 1 16:10:21 UTC 2025 x86_64 GNU/Linux
$ ulimit -l
8192
(default)
Best regards,
Alexander
