Author: dexuan Date: Tue Jul 17 21:05:08 2018 New Revision: 336426 URL: https://svnweb.freebsd.org/changeset/base/336426
Log: hyperv/hn: Fix panic in hypervisor code upon device detach event Submitted by: hselasky Reviewed by: dexuan MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D16139 Modified: head/sys/dev/hyperv/netvsc/if_hn.c Modified: head/sys/dev/hyperv/netvsc/if_hn.c ============================================================================== --- head/sys/dev/hyperv/netvsc/if_hn.c Tue Jul 17 20:26:17 2018 (r336425) +++ head/sys/dev/hyperv/netvsc/if_hn.c Tue Jul 17 21:05:08 2018 (r336426) @@ -1161,6 +1161,13 @@ hn_ismyvf(const struct hn_softc *sc, const struct ifne strcmp(ifp->if_dname, "vlan") == 0) return (false); + /* + * During detach events ifp->if_addr might be NULL. + * Make sure the bcmp() below doesn't panic on that: + */ + if (ifp->if_addr == NULL || hn_ifp->if_addr == NULL) + return (false); + if (bcmp(IF_LLADDR(ifp), IF_LLADDR(hn_ifp), ETHER_ADDR_LEN) != 0) return (false); _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
