From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Greg Kroah-Hartman , alan@lxorguk.ukuu.org.uk, Ilija Hadzic , Alex Deucher , Shuah Khan , CAI Qian Subject: [ 17/33] drm/radeon: fix a bogus kfree Date: Fri, 18 Jan 2013 17:16:42 -0800 Message-Id: <20130119010351.903163884@linuxfoundation.org> In-Reply-To: <20130119010345.885772698@linuxfoundation.org> References: <20130119010345.885772698@linuxfoundation.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: 3.7-stable review patch. If anyone has any objections, please let me know. ------------------ From: Ilija Hadzic commit a6b7e1a02b77ab8fe8775d20a88c53d8ba55482e upstream. parser->chunks[.].kpage[.] is not always kmalloc-ed by the parser initialization, so parser_fini should not try to kfree it if it didn't allocate it. This patch fixes a kernel oops that can be provoked in UMS mode. Signed-off-by: Ilija Hadzic Signed-off-by: Alex Deucher Signed-off-by: Shuah Khan Cc: CAI Qian Signed-off-by: Greg Kroah-Hartman --- drivers/gpu/drm/radeon/r600_cs.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) --- a/drivers/gpu/drm/radeon/r600_cs.c +++ b/drivers/gpu/drm/radeon/r600_cs.c @@ -2429,8 +2429,10 @@ static void r600_cs_parser_fini(struct r kfree(parser->relocs); for (i = 0; i < parser->nchunks; i++) { kfree(parser->chunks[i].kdata); - kfree(parser->chunks[i].kpage[0]); - kfree(parser->chunks[i].kpage[1]); + if (parser->rdev && (parser->rdev->flags & RADEON_IS_AGP)) { + kfree(parser->chunks[i].kpage[0]); + kfree(parser->chunks[i].kpage[1]); + } } kfree(parser->chunks); kfree(parser->chunks_array);