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sctp: fix integer overflow when setting the autoclose timer 

When setting the autoclose timeout in jiffies there is a possible
integer overflow if the value in seconds is very large
(e.g. for 2^22 s with HZ=1024). The problem appears even on
64-bit due to the integer promotion rules. The fix is just a cast
 to unsigned long.

Signed-off-by: Andrei Pelinescu-Onciul <andrei@iptel.org>
Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
This commit is contained in:
Andrei Pelinescu-Onciul 2009-11-23 15:54:01 -05:00 committed by Vlad Yasevich
parent f6778aab6c
commit da85b7396f
1 changed files with 1 additions and 1 deletions
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2
net/sctp/associola.c
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@ -167,7 +167,7 @@ static struct sctp_association *sctp_association_init(struct sctp_association *a
asoc->timeouts[SCTP_EVENT_TIMEOUT_HEARTBEAT] = 0;
asoc->timeouts[SCTP_EVENT_TIMEOUT_SACK] = asoc->sackdelay;
asoc->timeouts[SCTP_EVENT_TIMEOUT_AUTOCLOSE] =
sp->autoclose * HZ;
(unsigned long)sp->autoclose * HZ;
/* Initilizes the timers */
for (i = SCTP_EVENT_TIMEOUT_NONE; i < SCTP_NUM_TIMEOUT_TYPES; ++i)