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Bug #3319

closed

setproctitle() calls can change effect of later setproctitle() calls

Added by tonyc over 2 years ago. Updated over 1 year ago.

Status:
Closed
Priority:
Normal
Assignee:
-
Category:
-
Target version:
6.4
Start date:
06/30/2022
Due date:
% Done:

0%

Estimated time:

Description

The final setproctitle() call in the attached code results in different outputs from ps depending on the whether the earlier setproctitle() calls are present.

$ cc 19894.c && ./a.out
x (a.out)
$ cc -DMANY 19894.c && ./a.out
a.out: -x (a.out)
$ uname -a
DragonFly 6.2-RELEASE DragonFly v6.2.2-RELEASE #2: Thu Jun 9 22:53:25 EDT 2022 :/usr/obj/home/justin/release/6_2/sys/X86_64_GENERIC x86_64

This came up from new perl tests failing on DragonflyBSD.

Files

19894.c (667 Bytes) 19894.c Code demonstrating issue tonyc, 06/29/2022 06:05 PM
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 #1

Updated by swildner over 1 year ago

  • Status changed from New to Closed

Turns out that a format beginning with '-' stopped working properly after the 10th call to setproctitle(). DragonFly switches to a faster way after 10 calls and that didn't handle the '-' properly.

Fixed in https://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/b866b1dac9e41035fffd5f4cec3b0a24a95916b6

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