Author: kevans
Date: Mon Jan 21 01:45:35 2019
New Revision: 343240
URL: https://svnweb.freebsd.org/changeset/base/343240
Log:
iwm(4): Fix possible null pointer indirection
Obtained from: DragonFlyBSD (obtained from Haiku)
MFC after: 1 week
Modified:
head/sys/dev/iwm/if_iwm.c
Modified: head/sys/dev/iwm/if_iwm.c
==============================================================================
--- head/sys/dev/iwm/if_iwm.c Mon Jan 21 01:03:03 2019 (r343239)
+++ head/sys/dev/iwm/if_iwm.c Mon Jan 21 01:45:35 2019 (r343240)
@@ -1033,7 +1033,8 @@ iwm_reset_rx_ring(struct iwm_softc *sc, struct iwm_rx_
* The hw rx ring index in shared memory must also be cleared,
* otherwise the discrepancy can cause reprocessing chaos.
*/
- memset(sc->rxq.stat, 0, sizeof(*sc->rxq.stat));
+ if (sc->rxq.stat)
+ memset(sc->rxq.stat, 0, sizeof(*sc->rxq.stat));
}
static void
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