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BUG: KCSAN: data-race in blkdev_put / blkdev_put

write to 0xffff88810058a6e8 of 4 bytes by task 10933 on cpu 1:
 blkdev_put_whole block/bdev.c:686 [inline]
 blkdev_put+0x2ef/0x4a0 block/bdev.c:947
 blkdev_close+0x32/0x40 block/fops.c:512
 __fput+0x295/0x520 fs/file_table.c:317
 ____fput+0x11/0x20 fs/file_table.c:350
 task_work_run+0x8e/0x110 kernel/task_work.c:164
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:183 [inline]
 exit_to_user_mode_prepare+0x122/0x140 kernel/entry/common.c:215
 __syscall_exit_to_user_mode_work kernel/entry/common.c:297 [inline]
 syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:308
 do_syscall_64+0x37/0x50 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x44/0xae

read to 0xffff88810058a6e8 of 4 bytes by task 2071 on cpu 0:
 blkdev_put+0x3b/0x4a0 block/bdev.c:902
 blkdev_close+0x32/0x40 block/fops.c:512
 __fput+0x295/0x520 fs/file_table.c:317
 ____fput+0x11/0x20 fs/file_table.c:350
 task_work_run+0x8e/0x110 kernel/task_work.c:164
 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:183 [inline]
 exit_to_user_mode_prepare+0x122/0x140 kernel/entry/common.c:215
 __syscall_exit_to_user_mode_work kernel/entry/common.c:297 [inline]
 syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:308
 do_syscall_64+0x37/0x50 arch/x86/entry/common.c:86
 entry_SYSCALL_64_after_hwframe+0x44/0xae

value changed: 0x00000004 -> 0x00000003

Reported by Kernel Concurrency Sanitizer on:
CPU: 0 PID: 2071 Comm: udevd Not tainted 5.17.0-syzkaller-13673-ge8b767f5e040-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
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