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From: Petr Vorel <pvorel@suse.cz>
To: Martin Doucha <mdoucha@suse.cz>
Cc: ltp@lists.linux.it
Subject: Re: [LTP] [PATCH v2 0/2] epoll_pwait2() timeout regression test
Date: Wed, 4 Jun 2025 09:34:29 +0200	[thread overview]
Message-ID: <20250604073429.GC1094733@pevik> (raw)
In-Reply-To: <20250603152253.214656-1-mdoucha@suse.cz>

Hi Martin,

> There seems to be a regression in kernel v6.14 where epoll_pwait2()
> interprets very small timeout values (~1000ns) as infinity and waits
> for events forever. This patchset adds regression test for this bug
> and a necessary refactor for do_epoll_pwait() to allow high precision
> timeouts.

Good catch! BTW it looks to me 0a65bc27bd64 is from v6.15-rc3 (e.g. 6.15
development cycle), but it was backported to 6.14 stable as 99a0ad16dfd11
to v6.14.4. Obviously fixing commit d9ec73301099 has also been backported
(to v6.14.8).

Kind regards,
Petr


-- 
Mailing list info: https://lists.linux.it/listinfo/ltp

      parent reply	other threads:[~2025-06-04  7:34 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-06-03 15:22 [LTP] [PATCH v2 0/2] epoll_pwait2() timeout regression test Martin Doucha
2025-06-03 15:22 ` [LTP] [PATCH v2 1/2] epoll_pwait: Refactor timeout to struct timespec Martin Doucha
2025-06-04  6:35   ` Petr Vorel
2025-06-04 12:10     ` Martin Doucha
2025-06-05  6:28       ` Petr Vorel
2025-06-04  7:01   ` Andrea Cervesato via ltp
2025-06-03 15:22 ` [LTP] [PATCH v2 2/2] Add regression test for epoll_pwait2() timeout Martin Doucha
2025-06-04  7:01   ` Andrea Cervesato via ltp
2025-06-04  7:29   ` Petr Vorel
2025-06-04  7:34 ` Petr Vorel [this message]

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