BUG: Dentry still in use [unmount of tmpfs tmpfs]

Kernel	Title	Repro	Cause bisect	Count	Last	Reported	Patched	Status
android-5-10	BUG: Dentry still in use [unmount of ext4 loop0]	C	error	63	876d	914d	0/2	closed as dup on 2021/10/28 13:08
android-5-10	BUG: Dentry still in use in unmount	C	done	1184	792d	804d	2/2	fixed on 2022/02/25 03:20
android-54	BUG: Dentry still in use [unmount of ramfs ramfs]	C		476	811d	1133d	0/2	auto-obsoleted due to no activity on 2023/04/21 02:49
upstream	BUG: Dentry still in use [unmount of tmpfs tmpfs] fs			2	1782d	1782d	12/26	fixed on 2019/07/10 21:40
upstream	BUG: Dentry still in use [unmount of tmpfs tmpfs] (2) fs			3	1258d	1254d	0/26	auto-closed as invalid on 2021/02/11 21:17

Created	Duration	User	Patch	Repo	Result
2023/04/20 14:37	13m	retest repro		android12-5.4	OK log

Created

Duration

User

Patch

Repo

Result

2023/04/20 14:37

13m

retest repro

android12-5.4

OK log

BUG: Dentry 000000009fb05929{i=0,n=.index} still in use (1) [unmount of tmpfs tmpfs] ------------[ cut here ]------------ WARNING: CPU: 1 PID: 364 at fs/dcache.c:1597 umount_check+0x179/0x1c0 fs/dcache.c:1588 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 364 Comm: syz-executor417 Not tainted 5.4.93-syzkaller-00590-g1e5f5a14faba #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1dd/0x24e lib/dump_stack.c:118 panic+0x285/0x750 kernel/panic.c:221 __warn+0x1fd/0x200 kernel/panic.c:582 report_bug+0x390/0x4d0 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:179 [inline] do_error_trap arch/x86/kernel/traps.c:272 [inline] do_invalid_op+0x6e/0x110 arch/x86/kernel/traps.c:291 invalid_op+0x1e/0x30 arch/x86/entry/entry_64.S:1029 RIP: 0010:umount_check+0x179/0x1c0 fs/dcache.c:1588 Code: ff 4c 8b 0b 48 81 c5 20 04 00 00 48 c7 c7 63 55 1d 85 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 07 36 b0 ff 48 83 c4 08 <0f> 0b e9 fd fe ff ff 89 e9 80 e1 07 80 c1 03 38 c1 0f 8c d4 fe ff RSP: 0018:ffff8881e8837708 EFLAGS: 00010282 RAX: 0000000000000055 RBX: ffffffff8546c8a0 RCX: a3b0bfbbf6f45b00 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffff8881e8825420 R08: ffffffff814e47a1 R09: ffffed103ee25e08 R10: ffffed103ee25e08 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881effd7110 d_walk+0x2e9/0x570 fs/dcache.c:1307 do_one_tree fs/dcache.c:1604 [inline] shrink_dcache_for_umount+0x8a/0x1b0 fs/dcache.c:1620 generic_shutdown_super+0x63/0x2a0 fs/super.c:447 kill_anon_super fs/super.c:1108 [inline] kill_litter_super+0x71/0xa0 fs/super.c:1117 deactivate_locked_super+0xaf/0x100 fs/super.c:335 deactivate_super+0x1b8/0x280 fs/super.c:366 cleanup_mnt+0x432/0x4e0 fs/namespace.c:1102 task_work_run+0x176/0x1a0 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0xcc2/0x2830 kernel/exit.c:812 do_group_exit+0x155/0x2b0 kernel/exit.c:910 get_signal+0x13ec/0x1f00 kernel/signal.c:2745 do_signal+0x92/0x5d0 arch/x86/kernel/signal.c:815 exit_to_usermode_loop arch/x86/entry/common.c:159 [inline] prepare_exit_to_usermode+0x207/0x310 arch/x86/entry/common.c:194 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x449f69 Code: Bad RIP value. RSP: 002b:00007f3bb7b212f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00000000004cb4d0 RCX: 0000000000449f69 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000004cb4d8 RBP: 6e656d6572636e69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e R13: 766974616c65723d R14: 65646f6e695f726e R15: 00000000004cb4d8 Kernel Offset: disabled Rebooting in 86400 seconds..

Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Manager	Title
2021/02/01 05:31	android12-5.4	1e5f5a14faba	fc9fd31e	.config	console log	report	syz	C		ci2-android-5-4-kasan	BUG: Dentry still in use [unmount of tmpfs tmpfs]
2021/07/22 03:59	android12-5.4	fe8243e7f1d1	29c3f20f	.config	console log	report			info	ci2-android-5-4-kasan	BUG: Dentry still in use [unmount of tmpfs tmpfs]
2021/06/24 18:49	android12-5.4	87c05c860576	ec865f6a	.config	console log	report			info	ci2-android-5-4-kasan	BUG: Dentry still in use [unmount of tmpfs tmpfs]
2021/05/02 08:10	android12-5.4	a50424773496	77e2b668	.config	console log	report			info	ci2-android-5-4-kasan	BUG: Dentry still in use [unmount of tmpfs tmpfs]
2021/04/25 06:39	android12-5.4	aa0556d71ff1	17f0b706	.config	console log	report			info	ci2-android-5-4-kasan	BUG: Dentry still in use [unmount of tmpfs tmpfs]
2021/04/24 19:07	android12-5.4	aa0556d71ff1	17f0b706	.config	console log	report			info	ci2-android-5-4-kasan	BUG: Dentry still in use [unmount of tmpfs tmpfs]
2021/04/15 18:28	android12-5.4	ce6a5172613f	c59079a6	.config	console log	report			info	ci2-android-5-4-kasan	BUG: Dentry still in use [unmount of tmpfs tmpfs]
2021/03/30 11:16	android12-5.4	1dc47fb418c8	6a81331a	.config	console log	report			info	ci2-android-5-4-kasan	BUG: Dentry still in use [unmount of tmpfs tmpfs]
2021/03/17 11:26	android12-5.4	160cae0caf16	fdb2bb2c	.config	console log	report			info	ci2-android-5-4-kasan	BUG: Dentry still in use [unmount of tmpfs tmpfs]
2021/02/01 05:17	android12-5.4	1e5f5a14faba	fc9fd31e	.config	console log	report			info	ci2-android-5-4-kasan	BUG: Dentry still in use [unmount of tmpfs tmpfs]