GNU bug report logs - #34235
27.0.50; lisp profiler does not work

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Package: emacs;

Reported by: Alex Branham <alex.branham <at> gmail.com>

Date: Mon, 28 Jan 2019 18:35:01 UTC

Severity: normal

Merged with 34809

Found in version 27.0.50

Done: Paul Eggert <eggert <at> cs.ucla.edu>

Bug is archived. No further changes may be made.

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From: Thomas Gleixner <tglx <at> linutronix.de>
To: Alan Mackenzie <acm <at> muc.de>
Cc: Alex Branham <alex.branham <at> gmail.com>, Eli Zaretskii <eliz <at> gnu.org>, linux-kernel <at> vger.kernel.org, 34235 <at> debbugs.gnu.org
Subject: bug#34235: 0e334db6bb4b1fd1e2d72c1f3d8f004313cd9f94 (posix-timers: Fix division by zero bug). Problems with glibc.
Date: Fri, 1 Feb 2019 23:04:48 +0100 (CET)

Hello Alan,

On Fri, 1 Feb 2019, Alan Mackenzie wrote:
> 0e334db6bb4b1fd1e2d72c1f3d8f004313cd9f94
> posix-timers: Fix division by zero bug
> Committed: 2018-12-17 17:35:45 +0100
> 
> With this patch in place I am seeing problems with glibc's function
> timer_create.  I am an Emacs maintainer, and saw these problems whilst
> investigating Emacs bug #34235 "27.0.50; lisp profiler does not work".

> Emacs's profiler fails in kernel 4.19.13, but works in a version of
> 4.19.13 with the patch reversed, otherwise unchanged.  My current version
> of glibc is 2.27-r6 (I think the "-r6" comes from Gentoo, my distro).

Please upgrade to 4.19.19. The issue should be fixed there with the
backported variant of

   93ad0fc088c5 ("posix-cpu-timers: Unbreak timer rearming")

Commit 21c0d1621b8d4b in 4.19.19

Thanks,

	tglx
This bug report was last modified 6 years and 130 days ago.

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