kmod: prevent kmod_loop_msg overflow in __request_module()
authorJiri Kosina <jkosina@suse.cz>
Wed, 26 Oct 2011 02:40:39 +0000 (13:10 +1030)
committerRusty Russell <rusty@rustcorp.com.au>
Wed, 26 Oct 2011 02:40:39 +0000 (13:10 +1030)
commit37252db6aa576c34fd794a5a54fb32d7a8b3a07a
tree2c4c83ec064a1352d8888e2e3641a9f2b1b72c03
parentc3b92c8787367a8bb53d57d9789b558f1295cc96
kmod: prevent kmod_loop_msg overflow in __request_module()

Due to post-increment in condition of kmod_loop_msg in __request_module(),
the system log can be spammed by much more than 5 instances of the 'runaway
loop' message if the number of events triggering it makes the kmod_loop_msg
to overflow.

Fix that by making sure we never increment it past the threshold.

Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
CC: stable@kernel.org
kernel/kmod.c