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BUG: KCSAN: data-race in console_unlock / printk_kthread_func

write to 0xffffffff85bece18 of 1 bytes by task 27856 on cpu 0:
 console_kthreads_unblock kernel/printk/printk.c:336 [inline]
 __console_unlock kernel/printk/printk.c:2818 [inline]
 console_unlock+0x4d5/0x700 kernel/printk/printk.c:3075
 c_stop+0xa/0x10 fs/proc/consoles.c:83
 seq_read_iter+0x751/0x8e0 fs/seq_file.c:280
 proc_reg_read_iter+0xfa/0x170 fs/proc/inode.c:300
 call_read_iter include/linux/fs.h:2035 [inline]
 io_iter_do_read fs/io_uring.c:4253 [inline]
 io_read fs/io_uring.c:4372 [inline]
 io_issue_sqe+0x1f80/0xaa40 fs/io_uring.c:8310
 io_queue_sqe fs/io_uring.c:8706 [inline]
 io_submit_sqe+0x2cdb/0x3ac0 fs/io_uring.c:8968
 io_submit_sqes+0x27b/0x500 fs/io_uring.c:9079
 __do_sys_io_uring_enter fs/io_uring.c:12008 [inline]
 __se_sys_io_uring_enter+0x2d9/0xdd0 fs/io_uring.c:11934
 __x64_sys_io_uring_enter+0x74/0x80 fs/io_uring.c:11934
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x46/0xb0

read to 0xffffffff85bece18 of 1 bytes by task 14 on cpu 1:
 printer_should_wake kernel/printk/printk.c:3731 [inline]
 printk_kthread_func+0x401/0xb60 kernel/printk/printk.c:3795
 kthread+0x1a9/0x1e0 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30

value changed: 0x01 -> 0x00

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 14 Comm: pr/ttyS0 Not tainted 5.18.0-syzkaller-09061-g16477cdfefdb-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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