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.
Upstream commit-id: a6b7e1a02b77ab8fe8775d20a88c53d8ba55482e
Tested on stable 3.7
Signed-off-by: Ilija Hadzic <ihadzic@xxxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Shuah Khan <shuah.khan@xxxxxx>
CC: stable@xxxxxxxxxxxxxxx 3.7
---
drivers/gpu/drm/radeon/r600_cs.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/radeon/r600_cs.c b/drivers/gpu/drm/radeon/r600_cs.c
index 03191a5..6858a40 100644
--- a/drivers/gpu/drm/radeon/r600_cs.c
+++ b/drivers/gpu/drm/radeon/r600_cs.c
@@ -2476,8 +2476,10 @@ static void r600_cs_parser_fini(struct radeon_cs_parser *parser, int error)
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);
--
1.7.9.5
_______________________________________________
dri-devel mailing list
dri-devel@xxxxxxxxxxxxxxxxxxxxx
http://lists.freedesktop.org/mailman/listinfo/dri-devel
