Date: Tue, 23 Aug 2016 19:03:11 +0000 (UTC) From: "Landon J. Fuller" <landonf@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r304692 - head/sys/dev/bhnd/bhndb Message-ID: <201608231903.u7NJ3Bjc019151@repo.freebsd.org>
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Author: landonf Date: Tue Aug 23 19:03:11 2016 New Revision: 304692 URL: https://svnweb.freebsd.org/changeset/base/304692 Log: bhndb(4): Fix unsigned integer underflow in dynamic register window handling. This resulted in the window target being left uninitialized when an underflow occured. Approved by: adrian (mentor) Differential Revision: https://reviews.freebsd.org/D7617 Modified: head/sys/dev/bhnd/bhndb/bhndb.c Modified: head/sys/dev/bhnd/bhndb/bhndb.c ============================================================================== --- head/sys/dev/bhnd/bhndb/bhndb.c Tue Aug 23 17:42:03 2016 (r304691) +++ head/sys/dev/bhnd/bhndb/bhndb.c Tue Aug 23 19:03:11 2016 (r304692) @@ -1728,8 +1728,9 @@ bhndb_io_resource(struct bhndb_softc *sc /* Adjust the window if the I/O request won't fit in the current * target range. */ - if (addr < dwa->target || - (dwa->target + dwa->win->win_size) - addr < size) + if (addr < dwa->target || + addr > dwa->target + dwa->win->win_size || + (dwa->target + dwa->win->win_size) - addr < size) { error = bhndb_dw_set_addr(sc->dev, sc->bus_res, dwa, addr, size);
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