4.16-stable review patch. If anyone has any objections, please let me know.
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From: Tomi Valkeinen tomi.valkeinen@ti.com
[ Upstream commit 6a0f0c55619f0b82a677cab72e77c3444a5eee58 ]
tiler_reserve_2d allocates memory but does not check if it got the memory. Add the check and return ENOMEM on failure.
Signed-off-by: Tomi Valkeinen tomi.valkeinen@ti.com Link: https://patchwork.freedesktop.org/patch/msgid/20180329104038.29154-2-tomi.va... Reviewed-by: Emil Velikov emil.velikov@collabora.com Reviewed-by: Laurent Pinchart laurent.pinchart@ideasonboard.com Signed-off-by: Sean Paul seanpaul@chromium.org Signed-off-by: Sasha Levin alexander.levin@microsoft.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/gpu/drm/omapdrm/omap_dmm_tiler.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-)
--- a/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c +++ b/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c @@ -401,12 +401,16 @@ int tiler_unpin(struct tiler_block *bloc struct tiler_block *tiler_reserve_2d(enum tiler_fmt fmt, uint16_t w, uint16_t h, uint16_t align) { - struct tiler_block *block = kzalloc(sizeof(*block), GFP_KERNEL); + struct tiler_block *block; u32 min_align = 128; int ret; unsigned long flags; u32 slot_bytes;
+ block = kzalloc(sizeof(*block), GFP_KERNEL); + if (!block) + return ERR_PTR(-ENOMEM); + BUG_ON(!validfmt(fmt));
/* convert width/height to slots */