I used the following code to synchronize the two kernel threads. After running, panic occurred in the system and abnormal memory was found in mutex by kdump. What is the reason for this？
struct request { ... ... struct mutex lock; bool finish; ... ...};kthread1
int wait_request(struct request *request){ while (1) { mutex_lock(&request->lock); if(request->finish) { mutex_unlock(&request->lock); break; } mutex_unlock(&request->lock); } return SUCCESS;}kthread2
void request_process(void *date){ struct request *request = (struct request *)date; mutex_lock(&request->lock); request->finish = true; mutex_unlock(&request->lock);}The details are in this picture
[ 213.738777] [<ffffffffa9711b2e>] __mutex_unlock_slowpath+0x5e/0x90[ 213.738800] [<ffffffffa9710fab>] mutex_unlock+0x1b/0x20[ 213.738820] [<ffffffffc0baa109>] request_process+0x29/0x30 [kdemo][ 213.738843] [<ffffffffc0baa1c1>] queue_fn+0xb1/0x130 [kdemo][ 213.738863] [<ffffffffc0baa110>] ? request_process+0x30/0x30 [kdemo][ 213.738887] [<ffffffffa90bae31>] kthread+0xd1/0xe0[ 213.738906] [<ffffffffa90bad60>] ? insert_kthread_work+0x40/0x40[ 213.738928] [<ffffffffa971f61d>] ret_from_fork_nospec_begin+0x7/0x21[ 213.738951] [<ffffffffa90bad60>] ? insert_kthread_work+0x40/0x40[ 213.738971] Code: 09 00 00 31 c9 31 d2 e8 18 41 ff ff eb e4 66 0f 1f 44 00 00 0f 1f 44 00 00 55 48 8d 8e b0 0f 00 00 31 c0 ba 01 00 00 00 48 89 e5 <f0> 48 0f b1 96 b0 0f 00 00 48 85 c0 74 0b 5d c3 66 0f 1f 84 00[ 213.739134] RIP [<ffffffffa90caa47>] wake_q_add+0x17/0x50[ 213.739155] RSP <ffff8a5e25adfe00>[ 213.739168] CR2: 0000000000000fb0