CVE-2022-49751 Information

Description

In the Linux kernel the following vulnerability has been resolved:

w1: fix WARNING after calling w1_process()

I got the following WARNING message while removing driver(ds2482):

————[ cut here ]———— do not call blocking ops when !TASK_RUNNING; state=1 set at [<000000002d50bfb6>] w1_process+0x9e/0x1d0 [wire] WARNING: CPU: 0 PID: 262 at kernel/sched/core.c:9817 __might_sleep+0x98/0xa0 CPU: 0 PID: 262 Comm: w1_bus_master1 Tainted: G N 6.1.0-rc3+ 307 RIP: 0010:__might_sleep+0x98/0xa0 Call Trace: exit_signals+0x6c/0x550 do_exit+0x2b4/0x17e0 kthread_exit+0x52/0x60 kthread+0x16d/0x1e0 ret_from_fork+0x1f/0x30

The state of task is set to TASK_INTERRUPTIBLE in loop in w1_process() set it to TASK_RUNNING when it breaks out of the loop to avoid the warning.

Reference

https://git.kernel.org/stable/c/190b5c3bbd5df685bb1063bda048831d72b8f1d4 https://git.kernel.org/stable/c/216f35db6ec6a667cd9db4838d657c1d2f4684da https://git.kernel.org/stable/c/276052159ba94d4d9f5b453fb4707d6798c6b845 https://git.kernel.org/stable/c/36225a7c72e9e3e1ce4001b6ce72849f5c9a2d3b https://git.kernel.org/stable/c/89c62cee5d4d65ac75d99b5f986f7f94290e888f https://git.kernel.org/stable/c/bccd6df4c177b1ad766f16565ccc298653d027d0 https://git.kernel.org/stable/c/cfc7462ff824ed6718ed0272ee9aae88e20d469a