From: Mark-PK Tsai <mark-pk.tsai@mediatek.com>
To: <stable@vger.kernel.org>
Cc: <mchehab@kernel.org>, <matthias.bgg@gmail.com>,
<hverkuil-cisco@xs4all.nl>, <mark-pk.tsai@mediatek.com>,
<sakari.ailus@linux.intel.com>, <linux-media@vger.kernel.org>,
<linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-mediatek@lists.infradead.org>, <yj.chiang@mediatek.com>
Subject: [PATCH 5.10 0/2] media: vim2m: Fix potential NULL pointer dereference
Date: Wed, 25 May 2022 17:07:00 +0800 [thread overview]
Message-ID: <20220525090702.29035-1-mark-pk.tsai@mediatek.com> (raw)
Apply upstream solution [1][2] to fix below kernel panic:
Unable to handle kernel NULL pointer dereference at virtual address 0000000000000208
...
pc : _raw_spin_lock_irqsave+0x50/0x90
lr : v4l2_m2m_cancel_job+0x38/0x1c4 [v4l2_mem2mem]
sp : ffffffc012d2bcb0
x29: ffffffc012d2bcb0 x28: ffffff8098d6bb00
x27: 0000000000000000 x26: ffffffc01009b5c8
x25: 00000000000e001f x24: ffffff808ff3eb50
x23: ffffffc01009f5a0 x22: 0000000000000000
x21: ffffff808ffef000 x20: 0000000000000208
x19: 0000000000000000 x18: ffffffc012b51048
x17: ffffffc011e0ef7c x16: 00000000000000c0
x15: ffffffc010fc78f4 x14: ffffffc0119dd790
x13: 0000000000001b26 x12: 0000000053555555
x11: 0000000000000002 x10: 0000000000000001
x9 : 0000000000000000 x8 : 0000000000000208
x7 : 2020202020202020 x6 : ffffffc011e313a6
x5 : 0000000000000000 x4 : 0000000000000008
x3 : 000000000000002e x2 : 0000000000000001
x1 : 0000000000000000 x0 : 0000000000000208
Call trace:
_raw_spin_lock_irqsave+0x50/0x90
v4l2_m2m_cancel_job+0x38/0x1c4 [v4l2_mem2mem]
v4l2_m2m_ctx_release+0x38/0x60 [v4l2_mem2mem]
vim2m_release+0x5c/0xe0 [vim2m]
v4l2_release+0x90/0x18c
__fput+0xdc/0x2cc
____fput+0x10/0x1c
task_work_run+0xc4/0x130
do_notify_resume+0xdc/0x158
work_pending+0x8/0x10
[1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=cf7f34777a5b4100a3a44ff95f3d949c62892bdd
[2] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1a28dce222a6ece725689ad58c0cf4a1b48894f4
Hans Verkuil (1):
media: vim2m: initialize the media device earlier
Sakari Ailus (1):
media: vim2m: Register video device after setting up internals
drivers/media/test-drivers/vim2m.c | 22 +++++++++++++---------
1 file changed, 13 insertions(+), 9 deletions(-)
--
2.18.0
next reply other threads:[~2022-05-25 9:11 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-25 9:07 Mark-PK Tsai [this message]
2022-05-25 9:07 ` [PATCH 5.10 1/2] media: vim2m: Register video device after setting up internals Mark-PK Tsai
2022-05-25 9:07 ` [PATCH 5.10 2/2] media: vim2m: initialize the media device earlier Mark-PK Tsai
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