Bug 22247 – /proc/<pid>/cmdline is empty (all child processes are swapped)

• Status: RESOLVED FIXED
• Product: Gentoo Linux

[Description Rajiv Aaron Manglani (RETIRED) 2003-06-05 01:39:14 UTC]

see <https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=88047>

basically the ptrace fix for the kernel has a side effect of creating empty
/proc/<pid>/cmdline files. so when you do a ps -ef, all child processes show as
[process] which makes them looked swapped when they are really not.

eg:
named     1092     1  0 May26 ?        00:00:00 [named]
named     1093  1092  0 May26 ?        00:00:00  \_ [named]
named     1095  1093  0 May26 ?        00:00:03      \_ [named]
named     1103  1093  0 May26 ?        00:00:00      \_ [named]
named     1104  1093  0 May26 ?        00:00:00      \_ [named]

this is on x86 with 2.4.20-gentoo-r5

redhat has fixed this. we should grab their patch.

[Comment 1 Rajiv Aaron Manglani (RETIRED) 2003-10-26 21:24:05 UTC]

this bug is still present in gentoo-sources-2.4.20-r8.

[Comment 2 Brian Jackson (RETIRED) 2003-10-27 09:58:49 UTC]

it's fixed in gentoo-test-sources, which will eventually become gentoo-sources

[Comment 3 Tim Yamin (RETIRED) 2003-12-27 06:11:56 UTC]

Can you try gentoo-sources-2.4.22?

[Comment 4 Brian Jackson (RETIRED) 2004-01-14 09:39:53 UTC]

this should be fixed in 2.4.22, if it isn't feel free to reopen this bug