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nl80211: Fix undefined behavior in bit shift
authorJiunn Chang <c0d1n61at3@gmail.com>
Thu, 27 Jun 2019 05:04:26 +0000 (00:04 -0500)
committerJohannes Berg <johannes.berg@intel.com>
Fri, 28 Jun 2019 14:07:54 +0000 (16:07 +0200)
Shifting signed 32-bit value by 31 bits is undefined.  Changing most
significant bit to unsigned.

Signed-off-by: Jiunn Chang <c0d1n61at3@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
include/uapi/linux/nl80211.h patch | blob | history

diff --git a/include/uapi/linux/nl80211.h b/include/uapi/linux/nl80211.h
index 6f09d15..fa7ebbc 100644 (file)
--- a/include/uapi/linux/nl80211.h
+++ b/include/uapi/linux/nl80211.h
@@ -5314,7 +5314,7 @@ enum nl80211_feature_flags {
        NL80211_FEATURE_TDLS_CHANNEL_SWITCH             = 1 << 28,
        NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR            = 1 << 29,
        NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR      = 1 << 30,
-       NL80211_FEATURE_ND_RANDOM_MAC_ADDR              = 1 << 31,
+       NL80211_FEATURE_ND_RANDOM_MAC_ADDR              = 1U << 31,
 };
 
 /**