Author: pkelsey Date: Sat Mar 14 19:43:44 2020 New Revision: 358995 URL: https://svnweb.freebsd.org/changeset/base/358995
Log: Fix iflib freelist state corruption This fixes a bug in iflib freelist management that breaks the required correspondence between freelist indexes and driver ring slots. PR: 243126, 243392, 240628 Reported by: avg, alexandr.oleyni...@gmail.com, Harald Schmalzbauer Reviewed by: avg, gallatin MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D23943 Modified: head/sys/net/iflib.c Modified: head/sys/net/iflib.c ============================================================================== --- head/sys/net/iflib.c Sat Mar 14 18:35:44 2020 (r358994) +++ head/sys/net/iflib.c Sat Mar 14 19:43:44 2020 (r358995) @@ -2072,7 +2072,9 @@ _iflib_fl_refill(if_ctx_t ctx, iflib_fl_t fl, int coun bus_dmamap_sync(fl->ifl_ifdi->idi_tag, fl->ifl_ifdi->idi_map, BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE); ctx->isc_rxd_flush(ctx->ifc_softc, fl->ifl_rxq->ifr_id, fl->ifl_id, pidx); - fl->ifl_fragidx = frag_idx; + fl->ifl_fragidx = frag_idx + 1; + if (fl->ifl_fragidx == fl->ifl_size) + fl->ifl_fragidx = 0; return (n == -1 ? 0 : IFLIB_RXEOF_EMPTY); } _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"
