linux-stable/drivers/media/test-drivers/vivid
Liu Shixin ccb5392c4f media: vivid: fix compose size exceed boundary
[ Upstream commit 94a7ad9283 ]

syzkaller found a bug:

 BUG: unable to handle page fault for address: ffffc9000a3b1000
 #PF: supervisor write access in kernel mode
 #PF: error_code(0x0002) - not-present page
 PGD 100000067 P4D 100000067 PUD 10015f067 PMD 1121ca067 PTE 0
 Oops: 0002 [#1] PREEMPT SMP
 CPU: 0 PID: 23489 Comm: vivid-000-vid-c Not tainted 6.1.0-rc1+ #512
 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.13.0-1ubuntu1.1 04/01/2014
 RIP: 0010:memcpy_erms+0x6/0x10
[...]
 Call Trace:
  <TASK>
  ? tpg_fill_plane_buffer+0x856/0x15b0
  vivid_fillbuff+0x8ac/0x1110
  vivid_thread_vid_cap_tick+0x361/0xc90
  vivid_thread_vid_cap+0x21a/0x3a0
  kthread+0x143/0x180
  ret_from_fork+0x1f/0x30
  </TASK>

This is because we forget to check boundary after adjust compose->height
int V4L2_SEL_TGT_CROP case. Add v4l2_rect_map_inside() to fix this problem
for this case.

Fixes: ef834f7836 ("[media] vivid: add the video capture and output parts")
Signed-off-by: Liu Shixin <liushixin2@huawei.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-12-31 13:25:55 +01:00
..
Kconfig media: Kconfig: cleanup VIDEO_DEV dependencies 2022-03-18 05:58:35 +01:00
Makefile
vivid-cec.c media: vivid: add signal-free time for cec message xfer 2021-09-30 10:07:55 +02:00
vivid-cec.h media: vivid: add signal-free time for cec message xfer 2021-09-30 10:07:55 +02:00
vivid-core.c media: vivid: set num_in/outputs to 0 if not supported 2022-11-04 00:00:32 +09:00
vivid-core.h media: vivid: s_fbuf: add more sanity checks 2022-11-04 00:00:31 +09:00
vivid-ctrls.c media: vivid: add dynamic array test control 2022-07-15 16:22:32 +01:00
vivid-ctrls.h
vivid-kthread-cap.c media: vivid: use time_is_after_jiffies() instead of open coding it 2022-02-22 09:41:13 +01:00
vivid-kthread-cap.h
vivid-kthread-out.c media: vivid: use time_is_after_jiffies() instead of open coding it 2022-02-22 09:41:13 +01:00
vivid-kthread-out.h
vivid-kthread-touch.c media: vivid: use time_is_after_jiffies() instead of open coding it 2022-02-22 09:41:13 +01:00
vivid-kthread-touch.h
vivid-meta-cap.c
vivid-meta-cap.h
vivid-meta-out.c
vivid-meta-out.h
vivid-osd.c
vivid-osd.h
vivid-radio-common.c
vivid-radio-common.h
vivid-radio-rx.c
vivid-radio-rx.h
vivid-radio-tx.c
vivid-radio-tx.h
vivid-rds-gen.c
vivid-rds-gen.h
vivid-sdr-cap.c media: vivid: use time_is_after_jiffies() instead of open coding it 2022-02-22 09:41:13 +01:00
vivid-sdr-cap.h
vivid-touch-cap.c media: vivid: fix timestamp and sequence wrapping 2022-01-23 21:18:42 +01:00
vivid-touch-cap.h
vivid-vbi-cap.c media: vivid: use vb2_queue_change_type 2021-06-08 12:06:55 +02:00
vivid-vbi-cap.h
vivid-vbi-gen.c
vivid-vbi-gen.h
vivid-vbi-out.c
vivid-vbi-out.h
vivid-vid-cap.c media: vivid: fix compose size exceed boundary 2022-12-31 13:25:55 +01:00
vivid-vid-cap.h
vivid-vid-common.c media: vivid: Add support for the new YUVA and YUVX formats 2022-07-15 15:01:51 +01:00
vivid-vid-common.h
vivid-vid-out.c
vivid-vid-out.h