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linux/drivers/gpu/drm
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Dan Carpenter d1a0f34c91 drm/i915/overlay: Prevent divide by zero bugs in scaling 
commit 90a3d22ff02b196d5884e111f39271a1d4ee8e3e upstream.

Smatch detected a divide by zero bug in check_overlay_scaling().

    drivers/gpu/drm/i915/display/intel_overlay.c:976 check_overlay_scaling()
    error: potential divide by zero bug '/ rec->dst_height'.
    drivers/gpu/drm/i915/display/intel_overlay.c:980 check_overlay_scaling()
    error: potential divide by zero bug '/ rec->dst_width'.

Prevent this by ensuring that the dst height and width are non-zero.

Fixes: 02e792fbaadb ("drm/i915: implement drmmode overlay support v4")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220124122409.GA31673@kili
(cherry picked from commit cf5b64f7f10b28bebb9b7c9d25e7aee5cbe43918)
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-02-08 18:23:17 +01:00
..
amd
drm/amdgpu: fixup bad vram size on gmc v8
2022-01-27 09:04:27 +01:00
arc
drm: drop _mode_ from drm_mode_connector_attach_encoder
2018-07-13 18:40:27 +02:00
arm
drm/arm: fix unintentional integer overflow on left shift
2020-08-19 08:14:54 +02:00
armada
drm/armada: remove obsolete fb unreferencing kfifo and workqueue
2018-07-30 11:53:06 +01:00
ast
drm/ast: Fixed reboot test may cause system hanged
2019-09-06 10:21:59 +02:00
atmel-hlcdc
drm: atmel-hlcdc: enable clock before configuring timing engine
2020-02-11 04:34:16 -08:00
bochs
drm/bochs: downgrade pci_request_region failure from error to warning
2020-04-13 10:44:59 +02:00
bridge
drm/bridge: megachips: Ensure both bridges are probed before registration
2022-01-27 09:04:24 +01:00
cirrus
drm/cirrus: Use drm_framebuffer_put to avoid kernel oops in clean-up
2019-04-20 09:16:00 +02:00
etnaviv
drm/etnaviv: relax submit size limits
2022-02-08 18:23:03 +01:00
exynos
drm/exynos: fix ref count leak in mic_pre_enable
2020-07-22 09:32:01 +02:00
fsl-dcu
drm: drop _mode_ from drm_mode_connector_attach_encoder
2018-07-13 18:40:27 +02:00
gma500
gma500: clean up error handling in init
2021-03-04 09:39:38 +01:00
hisilicon
drm/hisilicon: hibmc: Don't overwrite fb helper surface depth
2020-01-27 14:49:55 +01:00
i2c
Merge branch 'drm-tda9950-fixes' of git://git.armlinux.org.uk/~rmk/linux-arm into drm-fixes
2018-10-04 10:32:14 +10:00
i810
drm/i810: Prevent underflow in ioctl
2019-12-13 08:52:44 +01:00
i915
drm/i915/overlay: Prevent divide by zero bugs in scaling
2022-02-08 18:23:17 +01:00
imx
drm/imx: imx-ldb: fix out of bounds array access warning
2021-04-16 11:49:30 +02:00
lib
…
mediatek
drm/mediatek: Add missing put_device() call in mtk_hdmi_dt_parse_pdata()
2020-09-23 12:11:00 +02:00
meson
drm/meson: fix shutdown crash when component not probed
2021-06-03 08:38:08 +02:00
mga
…
mgag200
drm: drop _mode_ from drm_mode_connector_attach_encoder
2018-07-13 18:40:27 +02:00
msm
drm/msm/dsi: invalid parameter check in msm_dsi_phy_enable
2022-02-08 18:23:09 +01:00
mxsfb
drm/mxsfb: Don't select DRM_KMS_FB_HELPER
2021-07-20 16:15:58 +02:00
nouveau
drm/nouveau: fix off by one in BIOS boundary checking
2022-02-08 18:23:14 +01:00
omapdrm
drm/omap: dmm_tiler: fix return error code in omap_dmm_probe()
2020-12-30 11:25:54 +01:00
panel
drm/panel: innolux-p079zca: Delete panel on attach() failure
2022-01-27 09:04:16 +01:00
pl111
drm/pl111: Initialize clock spinlock early
2019-06-15 11:54:00 +02:00
qxl
drm: qxl: ensure surf.data is ininitialized
2021-07-20 16:15:49 +02:00
r128
…
radeon
drm/radeon: fix error handling in radeon_driver_open_kms
2022-01-27 09:04:31 +01:00
rcar-du
drm: rcar-du: Fix build error
2020-06-30 23:17:17 -04:00
rockchip
drm/rockchip: cdn-dp-core: add missing clk_disable_unprepare() on error in cdn_dp_grf_write()
2021-07-20 16:15:49 +02:00
savage
drm/savage: off by one in savage_bci_cmdbuf()
2018-07-04 14:27:01 +02:00
scheduler
drm/scheduler: fix param documentation
2018-08-09 11:57:39 -05:00
selftests
drm-misc-next for 4.19:
2018-06-22 12:58:08 +10:00
shmobile
drm/shmob: Fix return value check in shmob_drm_probe
2020-01-27 14:50:12 +01:00
sis
…
sti
drm/sti: do not remove the drm_bridge that was never added
2020-01-27 14:49:53 +01:00
stm
drm/stm: attach gem fence to atomic state
2019-10-07 18:56:31 +02:00
sun4i
drm/sun4i: dw-hdmi: fix error return code in sun8i_dw_hdmi_bind()
2020-11-24 13:27:22 +01:00
tdfx
…
tegra
drm/tegra: dc: Don't set PLL clock to 0Hz
2021-04-16 11:49:30 +02:00
tilcdc
drm/tilcdc: fix leak & null ref in panel_connector_get_modes
2020-08-19 08:14:50 +02:00
tinydrm
tinydrm/mipi-dbi: Use dma-safe buffers for all SPI transfers
2019-05-31 06:46:32 -07:00
ttm
drm/ttm: fix eviction valuable range check.
2020-11-05 11:08:54 +01:00
tve200
drm/tve200: Fix handling of platform_get_irq() error
2020-12-30 11:25:49 +01:00
udl
drm/udl: fix control-message timeout
2021-11-26 11:36:24 +01:00
v3d
drm/v3d: Handle errors from IRQ setup.
2019-05-31 06:46:34 -07:00
vc4
drm/vc4: fix error code in vc4_create_object()
2021-12-01 09:27:42 +01:00
vgem
drm/vgem: Replace opencoded version of drm_gem_dumb_map_offset()
2020-08-26 10:30:58 +02:00
via
…
virtio
drm/virtio: Fix double free on probe failure
2021-07-20 16:15:59 +02:00
vkms
drm/vkms: Hold gem object while still in-use
2020-06-22 09:05:08 +02:00
vmwgfx
drm/vmwgfx: Fix stale file descriptors on failed usercopy
2022-01-29 10:19:19 +01:00
xen
drm/xen-front: Fix misused IS_ERR_OR_NULL checks
2020-12-30 11:25:43 +01:00
zte
drm/zte: Don't select DRM_KMS_FB_HELPER
2021-07-20 16:15:58 +02:00
ati_pcigart.c
…
drm_agpsupport.c
…
drm_atomic_helper.c
drm/atomic: put state on error path
2021-01-27 11:05:36 +01:00
drm_atomic.c
drm/atomic_helper: Stop modesets on unregistered connectors harder
2020-12-02 08:48:08 +01:00
drm_auth.c
drm: Lock pointer access in drm_master_release()
2021-06-16 11:54:59 +02:00
drm_blend.c
…
drm_bridge.c
…
drm_bufs.c
drm: return -EFAULT if copy_to_user() fails
2019-07-14 08:11:14 +02:00
drm_cache.c
…
drm_client.c
drm/cma-helper: Fix crash in fbdev error path
2018-10-02 13:03:34 +02:00
drm_color_mgmt.c
…
drm_connector.c
drm/atomic_helper: Stop modesets on unregistered connectors harder
2020-12-02 08:48:08 +01:00
drm_context.c
drm: Fix error handling in drm_legacy_addctx
2020-01-27 14:50:10 +01:00
drm_crtc_helper_internal.h
…
drm_crtc_helper.c
…
drm_crtc_internal.h
drm: drop _mode_ from remaining connector functions
2018-07-13 18:40:27 +02:00
drm_crtc.c
drm/lease: Make sure implicit planes are leased
2019-06-09 09:17:23 +02:00
drm_debugfs_crc.c
drm: remove the newline for CRC source name.
2020-02-24 08:34:45 +01:00
drm_debugfs.c
drm/debugfs: fix plain echo to connector "force" attribute
2020-08-19 08:14:52 +02:00
drm_dma.c
…
drm_dp_aux_dev.c
drm/dp_aux_dev: check aux_dev before use in drm_dp_aux_dev_get_by_minor()
2020-12-30 11:26:13 +01:00
drm_dp_cec.c
drm_dp_cec.c: fix formatting typo: %pdH -> %phD
2018-07-28 15:50:40 -03:00
drm_dp_dual_mode_helper.c
…
drm_dp_helper.c
drm/dp_helper: Add DP aux channel tracing
2018-07-16 11:47:53 -04:00
drm_dp_mst_topology.c
drm: fix drm_dp_mst_port refcount leaks in drm_dp_mst_allocate_vcpi
2020-12-30 11:25:43 +01:00
drm_drv.c
drm/drv: Hold ref on parent device during drm_device lifetime
2019-05-31 06:46:34 -07:00
drm_dumb_buffers.c
drm-misc-next for 4.19:
2018-06-28 13:29:07 +10:00
drm_edid_load.c
drm/edid: Fix a missing-check bug in drm_load_edid_firmware()
2019-07-31 07:26:58 +02:00
drm_edid.c
drm/edid: Add Oculus Rift S to non-desktop list
2020-06-07 13:17:56 +02:00
drm_encoder_slave.c
drm: encoder_slave: fix refcouting error for modules
2020-06-25 15:33:06 +02:00
drm_encoder.c
…
drm_fb_cma_helper.c
drm/cma-helper: Fix crash in fbdev error path
2018-10-02 13:03:34 +02:00
drm_fb_helper.c
drm/fb-helper: generic: Call drm_client_add() after setup is done
2020-01-27 14:50:36 +01:00
drm_file.c
drm: Wake up next in drm_read() chain if we are forced to putback the event
2019-05-31 06:46:34 -07:00
drm_flip_work.c
…
drm_fourcc.c
drm/fourcc: Add is_yuv field to drm_format_info to denote if the format is yuv
2018-07-18 16:56:45 +01:00
drm_framebuffer.c
drm: silence variable 'conn' set but not used
2019-08-16 10:12:46 +02:00
drm_gem_cma_helper.c
…
drm_gem_framebuffer_helper.c
drm/gem-fb-helper: Always do implicit sync
2018-06-20 14:43:13 +02:00
drm_gem.c
drm: hold gem reference until object is no longer accessed
2020-08-05 10:06:01 +02:00
drm_global.c
drm: add SPDX identifier and clarify license
2018-06-29 15:28:47 -05:00
drm_hashtab.c
…
drm_info.c
…
drm_internal.h
drm/lease: Send a distinct uevent
2018-12-13 09:16:21 +01:00
drm_ioc32.c
drm: Copy drm_wait_vblank to user before returning
2021-09-03 09:58:02 +02:00
drm_ioctl.c
drm: Return -ENOTTY for non-drm ioctls
2021-07-28 11:13:51 +02:00
drm_irq.c
…
drm_kms_helper_common.c
…
drm_lease.c
drm/lease: fix WARNING in idr_destroy
2020-03-25 08:06:12 +01:00
drm_legacy.h
…
drm_lock.c
…
drm_memory.c
…
drm_mipi_dsi.c
drm/mipi: use dcs write for mipi_dsi_dcs_set_tear_scanline
2020-08-19 08:14:55 +02:00
drm_mm.c
…
drm_mode_config.c
drm: writeback: Add client capability for exposing writeback connectors
2018-06-20 15:30:20 +01:00
drm_mode_object.c
drm: Reorder set_property_atomic to avoid returning with an active ww_ctx
2019-03-27 14:14:42 +09:00
drm_modes.c
drm/modes: Prevent division by zero htotal
2019-02-15 08:10:12 +01:00
drm_modeset_helper.c
…
drm_modeset_lock.c
drm: Change deadlock-avoidance algorithm for the modeset locks.
2018-07-03 09:46:05 +02:00
drm_of.c
drm/doc: Include drm_of.c helpers
2018-07-13 18:40:28 +02:00
drm_panel_orientation_quirks.c
drm: panel-orientation-quirks: Add quirk for KD Kurio Smart C15200 2-in-1
2021-11-26 11:36:03 +01:00
drm_panel.c
Revert "drm/panel: Add device_link from panel device to DRM device"
2018-09-27 11:00:42 -04:00
drm_pci.c
drm: Remove PageReserved manipulation from drm_pci_alloc
2020-04-17 10:48:55 +02:00
drm_plane_helper.c
drm/plane-helper: fix uninitialized variable reference
2021-11-26 11:36:14 +01:00
drm_plane.c
drm/lease: Make sure implicit planes are leased
2019-06-09 09:17:23 +02:00
drm_prime.c
dma-buf: remove kmap_atomic interface
2018-06-20 15:59:34 +02:00
drm_print.c
drm: Add puts callback for the coredump printer
2018-07-30 08:49:41 -04:00
drm_probe_helper.c
drm: Flush output polling on shutdown
2019-10-01 08:26:11 +02:00
drm_property.c
drm: limit to INT_MAX in create_blob ioctl
2020-01-09 10:18:59 +01:00
drm_rect.c
drm/rect: Avoid division by zero
2020-02-11 04:34:07 -08:00
drm_scatter.c
…
drm_scdc_helper.c
…
drm_simple_kms_helper.c
drm: drop _mode_ from drm_mode_connector_attach_encoder
2018-07-13 18:40:27 +02:00
drm_syncobj.c
drm/syncobj: Don't leak fences when WAIT_FOR_SUBMIT is set
2018-09-26 10:39:14 -04:00
drm_sysfs.c
drm/lease: Send a distinct uevent
2018-12-13 09:16:21 +01:00
drm_trace_points.c
…
drm_trace.h
…
drm_vblank.c
drm/drm_vblank: Change EINVAL by the correct errno
2019-12-31 16:35:01 +01:00
drm_vm.c
…
drm_vma_manager.c
drm: add SPDX idenitifier and clarify license
2018-06-29 15:28:47 -05:00
drm_writeback.c
drm: writeback: Fix doc that says connector should be disconnected
2018-07-16 16:35:27 +01:00
Kconfig
drm/radeon: fix AGP dependency
2021-03-30 14:36:58 +02:00
Makefile
drm: add support for DisplayPort CEC-Tunneling-over-AUX
2018-07-13 17:58:19 +03:00