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utils: Fix NULL pointer dereference with unexpected kernel behavior

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Fix mostly theoretical NULL pointer dereference in
wpa_debug_open_linux_tracing() if /proc/mounts were to return a
malformed line.

Signed-off-by: Ayala Beker <ayala.beker@intel.com>
This commit is contained in:
Ayala Beker 2015-12-10 12:56:03 +02:00 committed by Jouni Malinen
parent 1b3dd69d93
commit 819ad5b70b
1 changed files with 1 additions and 1 deletions
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2
src/utils/wpa_debug.c
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@ -148,7 +148,7 @@ int wpa_debug_open_linux_tracing(void)
strtok_r(line, " ", &tmp2); strtok_r(line, " ", &tmp2);
tmp_path = strtok_r(NULL, " ", &tmp2); tmp_path = strtok_r(NULL, " ", &tmp2);
fstype = strtok_r(NULL, " ", &tmp2); fstype = strtok_r(NULL, " ", &tmp2);
if (strcmp(fstype, "debugfs") == 0) { if (fstype && strcmp(fstype, "debugfs") == 0) {
path = tmp_path; path = tmp_path;
break; break;
} }