media: venus: fix use after free bug in venus_remove due to race condition

stable inclusion
from stable-v5.10.227
commit 60b6968341a6dd5353554f3e72db554693a128a5
bugzilla: https://gitee.com/src-openeuler/kernel/issues/IAYRCM
CVE: CVE-2024-49981

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=60b6968341a6dd5353554f3e72db554693a128a5



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commit c5a85ed88e043474161bbfe54002c89c1cb50ee2 upstream.

in venus_probe, core->work is bound with venus_sys_error_handler, which is
used to handle error. The code use core->sys_err_done to make sync work.
The core->work is started in venus_event_notify.

If we call venus_remove, there might be an unfished work. The possible
sequence is as follows:

CPU0                  CPU1

                     |venus_sys_error_handler
venus_remove         |
hfi_destroy	 		 |
venus_hfi_destroy	 |
kfree(hdev);	     |
                     |hfi_reinit
					 |venus_hfi_queues_reinit
                     |//use hdev

Fix it by canceling the work in venus_remove.

Cc: stable@vger.kernel.org
Fixes: af2c3834 ("[media] media: venus: adding core part and helper functions")
Signed-off-by: Zheng Wang <zyytlz.wz@163.com>
Signed-off-by: Dikshita Agarwal <quic_dikshita@quicinc.com>
Signed-off-by: Stanimir Varbanov <stanimir.k.varbanov@gmail.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Lin Ruifeng <linruifeng4@huawei.com>