================================================================== BUG: KCSAN: data-race in blkdev_put / blkdev_put write to 0xffff888101b916a8 of 4 bytes by task 13867 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:169 [inline] exit_to_user_mode_prepare+0x122/0x140 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:294 do_syscall_64+0x37/0x50 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae read to 0xffff888101b916a8 of 4 bytes by task 1438 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:169 [inline] exit_to_user_mode_prepare+0x122/0x140 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:294 do_syscall_64+0x37/0x50 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x44/0xae value changed: 0x00000002 -> 0x00000001 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 1438 Comm: udevd Not tainted 5.18.0-rc1-syzkaller-dirty #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================