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* [PATCH AUTOSEL 6.1 01/29] drm/cirrus: NULL-check pipe->plane.state->fb in cirrus_pipe_update()
@ 2023-03-20  0:53 Sasha Levin
  2023-03-20  0:53 ` [PATCH AUTOSEL 6.1 02/29] HID: cp2112: Fix driver not registering GPIO IRQ chip as threaded Sasha Levin
                   ` (27 more replies)
  0 siblings, 28 replies; 29+ messages in thread
From: Sasha Levin @ 2023-03-20  0:53 UTC (permalink / raw)
  To: linux-kernel, stable
  Cc: Alexandr Sapozhnikov, Thomas Zimmermann, Sasha Levin, airlied,
	kraxel, airlied, daniel, sam, jani.nikula, javierm,
	ville.syrjala, virtualization, dri-devel

From: Alexandr Sapozhnikov <alsp705@gmail.com>

[ Upstream commit 7245e629dcaaf308f1868aeffa218e9849c77893 ]

After having been compared to NULL value at cirrus.c:455, pointer
'pipe->plane.state->fb' is passed as 1st parameter in call to function
'cirrus_fb_blit_rect' at cirrus.c:461, where it is dereferenced at
cirrus.c:316.

Found by Linux Verification Center (linuxtesting.org) with SVACE.

v2:
	* aligned commit message to line-length limits

Signed-off-by: Alexandr Sapozhnikov <alsp705@gmail.com>
Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230215171549.16305-1-alsp705@gmail.com
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/gpu/drm/tiny/cirrus.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/tiny/cirrus.c b/drivers/gpu/drm/tiny/cirrus.c
index 354d5e854a6f0..b27e469e90217 100644
--- a/drivers/gpu/drm/tiny/cirrus.c
+++ b/drivers/gpu/drm/tiny/cirrus.c
@@ -455,7 +455,7 @@ static void cirrus_pipe_update(struct drm_simple_display_pipe *pipe,
 	if (state->fb && cirrus->cpp != cirrus_cpp(state->fb))
 		cirrus_mode_set(cirrus, &crtc->mode, state->fb);
 
-	if (drm_atomic_helper_damage_merged(old_state, state, &rect))
+	if (state->fb && drm_atomic_helper_damage_merged(old_state, state, &rect))
 		cirrus_fb_blit_rect(state->fb, &shadow_plane_state->data[0], &rect);
 }
 
-- 
2.39.2


^ permalink raw reply	[flat|nested] 29+ messages in thread

end of thread, other threads:[~2023-03-20  1:36 UTC | newest]

Thread overview: 29+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2023-03-20  0:53 [PATCH AUTOSEL 6.1 01/29] drm/cirrus: NULL-check pipe->plane.state->fb in cirrus_pipe_update() Sasha Levin
2023-03-20  0:53 ` [PATCH AUTOSEL 6.1 02/29] HID: cp2112: Fix driver not registering GPIO IRQ chip as threaded Sasha Levin
2023-03-20  0:53 ` [PATCH AUTOSEL 6.1 03/29] ca8210: fix mac_len negative array access Sasha Levin
2023-03-20  0:53 ` [PATCH AUTOSEL 6.1 04/29] HID: logitech-hidpp: Add support for Logitech MX Master 3S mouse Sasha Levin
2023-03-20  0:53 ` [PATCH AUTOSEL 6.1 05/29] HID: intel-ish-hid: ipc: Fix potential use-after-free in work function Sasha Levin
2023-03-20  0:53 ` [PATCH AUTOSEL 6.1 06/29] m68k: mm: Fix systems with memory at end of 32-bit address space Sasha Levin
2023-03-20  0:53 ` [PATCH AUTOSEL 6.1 07/29] m68k: Only force 030 bus error if PC not in exception table Sasha Levin
2023-03-20  0:53 ` [PATCH AUTOSEL 6.1 08/29] selftests/bpf: check that modifier resolves after pointer Sasha Levin
2023-03-20  0:53 ` [PATCH AUTOSEL 6.1 09/29] scsi: target: iscsi: Fix an error message in iscsi_check_key() Sasha Levin
2023-03-20  0:53 ` [PATCH AUTOSEL 6.1 10/29] scsi: qla2xxx: Add option to disable FC2 Target support Sasha Levin
2023-03-20  0:53 ` [PATCH AUTOSEL 6.1 11/29] scsi: hisi_sas: Check devm_add_action() return value Sasha Levin
2023-03-20  0:53 ` [PATCH AUTOSEL 6.1 12/29] scsi: ufs: core: Add soft dependency on governor_simpleondemand Sasha Levin
2023-03-20  0:53 ` [PATCH AUTOSEL 6.1 13/29] scsi: lpfc: Check kzalloc() in lpfc_sli4_cgn_params_read() Sasha Levin
2023-03-20  0:53 ` [PATCH AUTOSEL 6.1 14/29] scsi: lpfc: Avoid usage of list iterator variable after loop Sasha Levin
2023-03-20  0:53 ` [PATCH AUTOSEL 6.1 15/29] scsi: mpi3mr: ioctl timeout when disabling/enabling interrupt Sasha Levin
2023-03-20  0:53 ` [PATCH AUTOSEL 6.1 16/29] scsi: mpi3mr: Driver unload crashes host when enhanced logging is enabled Sasha Levin
2023-03-20  0:53 ` [PATCH AUTOSEL 6.1 17/29] scsi: mpi3mr: Wait for diagnostic save during controller init Sasha Levin
2023-03-20  0:54 ` [PATCH AUTOSEL 6.1 18/29] scsi: mpi3mr: Return proper values for failures in firmware init path Sasha Levin
2023-03-20  0:54 ` [PATCH AUTOSEL 6.1 19/29] scsi: mpi3mr: NVMe command size greater than 8K fails Sasha Levin
2023-03-20  0:54 ` [PATCH AUTOSEL 6.1 20/29] scsi: mpi3mr: Bad drive in topology results kernel crash Sasha Levin
2023-03-20  0:54 ` [PATCH AUTOSEL 6.1 21/29] scsi: storvsc: Handle BlockSize change in Hyper-V VHD/VHDX file Sasha Levin
2023-03-20  0:54 ` [PATCH AUTOSEL 6.1 22/29] platform/x86: ISST: Increase range of valid mail box commands Sasha Levin
2023-03-20  0:54 ` [PATCH AUTOSEL 6.1 23/29] platform/x86: int3472: Add GPIOs to Surface Go 3 Board data Sasha Levin
2023-03-20  0:54 ` [PATCH AUTOSEL 6.1 24/29] net: usb: cdc_mbim: avoid altsetting toggling for Telit FE990 Sasha Levin
2023-03-20  0:54 ` [PATCH AUTOSEL 6.1 25/29] net: usb: qmi_wwan: add Telit 0x1080 composition Sasha Levin
2023-03-20  0:54 ` [PATCH AUTOSEL 6.1 26/29] drm/amd/display: Update clock table to include highest clock setting Sasha Levin
2023-03-20  0:54 ` [PATCH AUTOSEL 6.1 27/29] sh: sanitize the flags on sigreturn Sasha Levin
2023-03-20  0:54 ` [PATCH AUTOSEL 6.1 28/29] drm/amdgpu: Fix call trace warning and hang when removing amdgpu device Sasha Levin
2023-03-20  0:54 ` [PATCH AUTOSEL 6.1 29/29] drm/amd: Fix initialization mistake for NBIO 7.3.0 Sasha Levin

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