Date: Mon, 21 Jan 2019 01:45:35 +0000 (UTC) From: Kyle Evans <kevans@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r343240 - head/sys/dev/iwm Message-ID: <201901210145.x0L1jZww084109@repo.freebsd.org>
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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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