GNU bug report logs - #36279
26.2.90; (process-attributes nonexistent-pid) segmentation fault

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Package: emacs;

Reported by: Xu Chunyang <mail <at> xuchunyang.me>

Date: Tue, 18 Jun 2019 13:27:02 UTC

Severity: normal

Tags: fixed

Found in version 26.2.90

Fixed in version 26.3

Done: Robert Pluim <rpluim <at> gmail.com>

Bug is archived. No further changes may be made.

Full log

Message #44 received at 36279 <at> debbugs.gnu.org (full text, mbox):

From: Robert Pluim <rpluim <at> gmail.com>
To: Andreas Schwab <schwab <at> suse.de>
Cc: 36279 <at> debbugs.gnu.org, Eli Zaretskii <eliz <at> gnu.org>, mail <at> xuchunyang.me,
 npostavs <at> gmail.com
Subject: Re: bug#36279: 26.2.90;
 (process-attributes nonexistent-pid) segmentation fault
Date: Wed, 19 Jun 2019 12:21:55 +0200

>>>>> On Wed, 19 Jun 2019 10:01:22 +0200, Andreas Schwab <schwab <at> suse.de> said:

    Andreas> On Jun 19 2019, Robert Pluim <rpluim <at> gmail.com> wrote:
    >> From a70ac9f644660a16fa871a9f6933c1344ffae083 Mon Sep 17 00:00:00 2001
    >> From: Robert Pluim <rpluim <at> gmail.com>
    >> Date: Wed, 19 Jun 2019 08:52:50 +0200
    >> Subject: [PATCH] Check length returned by sysctl
    >> To: emacs-devel <at> gnu.org
    >> 
    >> sysctl sometimes returns successfully even when it returns no data,
    >> such as when querying non-existent processes, which can cause crashes.

    Andreas> I thinks that's not a sometimes, but how it is documented to work.

I guess itʼs a matter of how you describe success:

Me: Kernel, please tell me about process <x>
Kernel: (process <x> does not exist). Success! Have some zero length
data.
Me: <crash>

But whatever, I can adjust the commit message.

Robert
This bug report was last modified 5 years and 342 days ago.

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