syzbot |
sign-in | mailing list | source | docs |
| 🐞 Open [1028] ≡ Subsystems 🐞 Fixed [5251] 🐞 Invalid [12568] ⬇ Missing Backports [85] 📈 Kernel Health 📈 Bug Lifetimes 📈 Fuzzing 📈 Crashes | 💬 Send us feedback |
================================================================== BUG: KCSAN: data-race in __kernfs_remove / cleanup_glue_dir read-write to 0xffff88800ca0b040 of 8 bytes by task 15058 on cpu 1: kernfs_unlink_sibling fs/kernfs/dir.c:396 [inline] __kernfs_remove+0x587/0x6a0 fs/kernfs/dir.c:1330 kernfs_remove+0x1d/0x30 fs/kernfs/dir.c:1356 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+0x875/0x8f0 drivers/base/core.c:3300 device_unregister+0x11/0x30 drivers/base/core.c:3321 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_remove+0x2b2/0x340 fs/eventpoll.c:710 ep_free+0x18b/0x210 fs/eventpoll.c:765 ep_eventpoll_release+0x2e/0x40 fs/eventpoll.c:782 __fput+0x24b/0x4e0 fs/file_table.c:280 ____fput+0x11/0x20 fs/file_table.c:313 task_work_run+0x8e/0x110 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x16b/0x1a0 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:302 do_syscall_64+0x45/0x80 arch/x86/entry/common.c:56 entry_SYSCALL_64_after_hwframe+0x44/0xa9 read to 0xffff88800ca0b040 of 8 bytes by task 15057 on cpu 0: kobject_has_children include/linux/kobject.h:135 [inline] cleanup_glue_dir+0xce/0x140 drivers/base/core.c:2808 device_del+0x880/0x8f0 drivers/base/core.c:3301 device_unregister+0x11/0x30 drivers/base/core.c:3321 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+0x1f3/0x210 fs/eventpoll.c:773 ep_eventpoll_release+0x2e/0x40 fs/eventpoll.c:782 __fput+0x24b/0x4e0 fs/file_table.c:280 ____fput+0x11/0x20 fs/file_table.c:313 task_work_run+0x8e/0x110 kernel/task_work.c:140 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop kernel/entry/common.c:174 [inline] exit_to_user_mode_prepare+0x16b/0x1a0 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline] syscall_exit_to_user_mode+0x20/0x40 kernel/entry/common.c:302 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: 0 PID: 15057 Comm: syz-executor.3 Not tainted 5.11.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 ==================================================================
| Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2021/01/29 09:20 | upstream | bec4c2968fce | 6593fd32 | .config | console log | report | info | ci2-upstream-kcsan-gce | KCSAN: data-race in __kernfs_remove / cleanup_glue_dir |