svn commit: r326033 - head/sys/net
Stephen Hurd
shurd at FreeBSD.org
Mon Nov 20 21:57:05 UTC 2017
Author: shurd
Date: Mon Nov 20 21:57:04 2017
New Revision: 326033
URL: https://svnweb.freebsd.org/changeset/base/326033
Log:
Fix off-by-one error in bit_nclear() usage
bit_nclear() takes the bit numbers for the start and end bits, not the start
and a count. This was resulting in memory corruption past the end of the
bitstr_t.
Sponsored by: Limelight Networks
Modified:
head/sys/net/iflib.c
Modified: head/sys/net/iflib.c
==============================================================================
--- head/sys/net/iflib.c Mon Nov 20 21:56:25 2017 (r326032)
+++ head/sys/net/iflib.c Mon Nov 20 21:57:04 2017 (r326033)
@@ -2025,7 +2025,7 @@ iflib_fl_setup(iflib_fl_t fl)
if_ctx_t ctx = rxq->ifr_ctx;
if_softc_ctx_t sctx = &ctx->ifc_softc_ctx;
- bit_nclear(fl->ifl_rx_bitmap, 0, fl->ifl_size);
+ bit_nclear(fl->ifl_rx_bitmap, 0, fl->ifl_size - 1);
/*
** Free current RX buffer structs and their mbufs
*/
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