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| author | Tomi Valkeinen <tomi.valkeinen@ti.com> | 2018-03-29 13:40:37 +0300 |
|---|---|---|
| committer | Sean Paul <seanpaul@chromium.org> | 2018-05-07 17:19:11 +0300 |
| commit | 6a0f0c55619f0b82a677cab72e77c3444a5eee58 (patch) | |
| tree | 959edfff134abde59758bb4750b222e363b52720 /drivers/gpu/drm/omapdrm | |
| parent | 77eeac24b10fc84d3ffd5b11a897dff88dde244d (diff) | |
| download | linux-6a0f0c55619f0b82a677cab72e77c3444a5eee58.tar.xz | |
drm/omap: fix possible NULL ref issue in tiler_reserve_2d
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.valkeinen@ti.com
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sean Paul <seanpaul@chromium.org>
Diffstat (limited to 'drivers/gpu/drm/omapdrm')
| -rw-r--r-- | drivers/gpu/drm/omapdrm/omap_dmm_tiler.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c b/drivers/gpu/drm/omapdrm/omap_dmm_tiler.c index f9fa1c90b35c..401c02e9e6b2 100644 --- 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 *block) struct tiler_block *tiler_reserve_2d(enum tiler_fmt fmt, u16 w, u16 h, u16 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 */ |