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netfilter: xt_HARDIDLETIMER: Fix null de-reference

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added a null check to prevent a null pointer derefence of hard idle
timer

Change-Id: Id1e49d5b109d8c71947723b252f4d2b6f3ebc35f
CRs-Fixed: 880124
Signed-off-by: Susheel Yadav Yadagiri <syadagir@codeaurora.org>
This commit is contained in:
Susheel Yadagiri 2015-07-27 12:12:10 -07:00 • committed by David Keitel
parent 2a38010e6c
commit 4d90c4302a
1 changed files with 1 additions and 1 deletions
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net/netfilter/xt_HARDIDLETIMER.c
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@ -134,7 +134,7 @@ static ssize_t hardidletimer_tg_show(struct kobject *kobj,
if (ktimespec.tv_sec >= 0)
return snprintf(buf, PAGE_SIZE, "%ld\n", ktimespec.tv_sec);
if (timer->send_nl_msg)
if ((timer) && (timer->send_nl_msg))
return snprintf(buf, PAGE_SIZE, "0 %ld\n", ktimespec.tv_sec);
else
return snprintf(buf, PAGE_SIZE, "0\n");