udevd[16825]: inotify_add_watch(7, /dev/loop5p7, 10) failed: No such file or directory
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BUG: KCSAN: data-race in data_alloc / data_push_tail

write to 0xffffffff86e300f0 of 8 bytes by task 16839 on cpu 0:
 data_alloc+0x216/0x2c0 kernel/printk/printk_ringbuffer.c:1074
 prb_reserve+0x893/0xbc0 kernel/printk/printk_ringbuffer.c:1555
 vprintk_store+0x53d/0x800 kernel/printk/printk.c:2284
 vprintk_emit+0xd0/0x430 kernel/printk/printk.c:2340
 devkmsg_emit+0x82/0xb0 kernel/printk/printk.c:733
 devkmsg_write+0x245/0x290 kernel/printk/printk.c:796
 do_iter_write+0x418/0x700 fs/read_write.c:861
 vfs_writev+0x199/0x300 fs/read_write.c:934
 do_writev+0xf8/0x220 fs/read_write.c:977
 __do_sys_writev fs/read_write.c:1050 [inline]
 __se_sys_writev fs/read_write.c:1047 [inline]
 __x64_sys_writev+0x45/0x50 fs/read_write.c:1047
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

read to 0xffffffff86e300f0 of 8 bytes by task 16825 on cpu 1:
 data_make_reusable kernel/printk/printk_ringbuffer.c:590 [inline]
 data_push_tail+0x102/0x430 kernel/printk/printk_ringbuffer.c:675
 data_alloc+0xbe/0x2c0 kernel/printk/printk_ringbuffer.c:1046
 prb_reserve+0x893/0xbc0 kernel/printk/printk_ringbuffer.c:1555
 vprintk_store+0x53d/0x800 kernel/printk/printk.c:2284
 vprintk_emit+0xd0/0x430 kernel/printk/printk.c:2340
 devkmsg_emit+0x82/0xb0 kernel/printk/printk.c:733
 devkmsg_write+0x245/0x290 kernel/printk/printk.c:796
 do_iter_write+0x418/0x700 fs/read_write.c:861
 vfs_writev+0x199/0x300 fs/read_write.c:934
 do_writev+0xf8/0x220 fs/read_write.c:977
 __do_sys_writev fs/read_write.c:1050 [inline]
 __se_sys_writev fs/read_write.c:1047 [inline]
 __x64_sys_writev+0x45/0x50 fs/read_write.c:1047
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd

value changed: 0x00000000ffffe92b -> 0x00000000fffff4e0

Reported by Kernel Concurrency Sanitizer on:
CPU: 1 PID: 16825 Comm: udevd Not tainted 6.2.0-rc8-syzkaller-00134-g38f8ccde04a3-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
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