diff options
author | Neil Horman <nhorman@tuxdriver.com> | 2009-09-23 15:56:54 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-24 07:21:00 -0700 |
commit | 725eae32df7754044809973034429a47e6035158 (patch) | |
tree | 96a66c65a085940a19374ee02c26fb8f1931a6be /Documentation/sysctl/kernel.txt | |
parent | ae6d2ed7bb3877ff35b9569402025f40ea2e1803 (diff) |
exec: make do_coredump() more resilient to recursive crashes
Change how we detect recursive dumps.
Currently we have a mechanism by which we try to compare pathnames of the
crashing process to the core_pattern path. This is broken for a dozen
reasons, and just doesn't work in any sort of robust way.
I'm replacing it with the use of a 0 RLIMIT_CORE value. Since helper apps
set RLIMIT_CORE to zero, we don't write out core files for any process
with that particular limit set. It the core_pattern is a pipe, any
non-zero limit is translated to RLIM_INFINITY.
This allows complete dumps to be captured, but prevents infinite recursion
in the event that the core_pattern process itself crashes.
[akpm@linux-foundation.org: coding-style fixes]
Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
Reported-by: Earl Chew <earl_chew@agilent.com>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/sysctl/kernel.txt')
0 files changed, 0 insertions, 0 deletions