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wakeup: Add the guard condition for len in pm_get_active_wakeup_sources

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Check if the len is not greater than maximum to prevent buffer overflow.

Signed-off-by: Ruchi Kandoi <kandoiruchi@google.com>
Change-Id: I575b0a72bb5448b68353408d71fa8b83420c9088
This commit is contained in:
Ruchi Kandoi 2015-11-10 10:53:55 -08:00 • committed by John Stultz
parent aa29c32d39
commit 5943541086
1 changed files with 1 additions and 1 deletions
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2
drivers/base/power/wakeup.c
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@ -813,7 +813,7 @@ void pm_get_active_wakeup_sources(char *pending_wakeup_source, size_t max)
rcu_read_lock();
list_for_each_entry_rcu(ws, &wakeup_sources, entry) {
if (ws->active) {
if (ws->active && len < max) {
if (!active)
len += scnprintf(pending_wakeup_source, max,
"Pending Wakeup Sources: ");