================================================================== BUG: KCSAN: data-race in __kernfs_remove / cleanup_glue_dir read-write to 0xffff888101bdec40 of 8 bytes by task 7320 on cpu 0: kernfs_unlink_sibling fs/kernfs/dir.c:396 [inline] __kernfs_remove+0x587/0x6a0 fs/kernfs/dir.c:1331 kernfs_remove+0x1d/0x30 fs/kernfs/dir.c:1357 sysfs_remove_dir+0x7a/0x90 fs/sysfs/dir.c:102 __kobject_del lib/kobject.c:620 [inline] kobject_del+0xb7/0x100 lib/kobject.c:643 device_del+0x925/0x9a0 drivers/base/core.c:3127 device_unregister+0x11/0x30 drivers/base/core.c:3148 wakeup_source_sysfs_remove+0x21/0x30 drivers/base/power/wakeup_stats.c:208 wakeup_source_unregister+0xea/0x110 drivers/base/power/wakeup.c:248 ep_free+0x263/0x280 fs/eventpoll.c:853 ep_eventpoll_release+0x2e/0x40 fs/eventpoll.c:862 __fput+0x243/0x4d0 fs/file_table.c:281 ____fput+0x11/0x20 fs/file_table.c:314 task_work_run+0x8e/0x110 kernel/task_work.c:151 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_user_mode_loop kernel/entry/common.c:164 [inline] exit_to_user_mode_prepare+0x13c/0x170 kernel/entry/common.c:191 syscall_exit_to_user_mode+0x16/0x30 kernel/entry/common.c:266 do_syscall_64+0x45/0x80 arch/x86/entry/common.c:56 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff888101bdec40 of 8 bytes by task 7313 on cpu 1: kobject_has_children include/linux/kobject.h:135 [inline] cleanup_glue_dir+0xce/0x140 drivers/base/core.c:2635 device_del+0x930/0x9a0 drivers/base/core.c:3128 device_unregister+0x11/0x30 drivers/base/core.c:3148 wakeup_source_sysfs_remove+0x21/0x30 drivers/base/power/wakeup_stats.c:208 wakeup_source_unregister+0xea/0x110 drivers/base/power/wakeup.c:248 ep_free+0x263/0x280 fs/eventpoll.c:853 ep_eventpoll_release+0x2e/0x40 fs/eventpoll.c:862 __fput+0x243/0x4d0 fs/file_table.c:281 ____fput+0x11/0x20 fs/file_table.c:314 task_work_run+0x8e/0x110 kernel/task_work.c:151 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_user_mode_loop kernel/entry/common.c:164 [inline] exit_to_user_mode_prepare+0x13c/0x170 kernel/entry/common.c:191 syscall_exit_to_user_mode+0x16/0x30 kernel/entry/common.c:266 do_syscall_64+0x45/0x80 arch/x86/entry/common.c:56 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 7313 Comm: syz-executor.4 Not tainted 5.10.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================