diff options
author | Neil Horman <nhorman@tuxdriver.com> | 2009-09-23 18:56:56 -0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-09-24 10:21:00 -0400 |
commit | a293980c2e261bd5b0d2a77340dd04f684caff58 (patch) | |
tree | 69f2b2747548deafb146c18953ebce21ae1f02d4 /CREDITS | |
parent | 725eae32df7754044809973034429a47e6035158 (diff) |
exec: let do_coredump() limit the number of concurrent dumps to pipes
Introduce core pipe limiting sysctl.
Since we can dump cores to pipe, rather than directly to the filesystem,
we create a condition in which a user can create a very high load on the
system simply by running bad applications.
If the pipe reader specified in core_pattern is poorly written, we can
have lots of ourstandig resources and processes in the system.
This sysctl introduces an ability to limit that resource consumption.
core_pipe_limit defines how many in-flight dumps may be run in parallel,
dumps beyond this value are skipped and a note is made in the kernel log.
A special value of 0 in core_pipe_limit denotes unlimited core dumps may
be handled (this is the default value).
[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 'CREDITS')
0 files changed, 0 insertions, 0 deletions