syzbot


BUG: Dentry still in use [unmount of ext4 loop0]

Status: closed as dup on 2021/10/28 13:08
Reported-by: syzbot+6f78f677b80b8c93f048@syzkaller.appspotmail.com
First crash: 464d, last: 426d

Cause bisection: failed (bisect log)
Duplicate of (1):
Title Repro Cause bisect Fix bisect Count Last Reported
BUG: Dentry still in use [unmount of ramfs ramfs] C error 3 465d 466d
similar bugs (33):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-54 BUG: Dentry still in use [unmount of ext4 loop0] C 132 460d 777d 0/2 upstream: reported C repro on 2020/12/15 05:47
upstream BUG: Dentry still in use in unmount vfs C 46 3d02h 158d 0/24 upstream: reported C repro on 2022/08/26 10:50
android-5-10 BUG: Dentry still in use in unmount C done 1184 342d 354d 2/2 fixed on 2022/02/25 03:20
android-54 BUG: Dentry still in use [unmount of ramfs ramfs] C 476 361d 683d 0/2 upstream: reported C repro on 2021/03/19 07:18
android-5-10 BUG: Dentry still in use [unmount of ext4 loop1] 1 460d 460d 0/2 closed as dup on 2021/10/28 13:08
android-54 BUG: Dentry still in use [unmount of ext4 loop1] 9 499d 771d 0/2 auto-closed as invalid on 2022/01/17 11:08
android-54 BUG: Dentry still in use [unmount of msdos loop3] (2) 1 493d 493d 0/2 auto-closed as invalid on 2022/01/23 09:42
android-54 BUG: Dentry still in use [unmount of msdos loop3] 2 647d 687d 0/2 auto-closed as invalid on 2021/08/22 12:19
android-5-10 BUG: Dentry still in use [unmount of fuse fuse] C error 3 462d 464d 0/2 closed as dup on 2021/10/28 13:08
android-54 BUG: Dentry still in use [unmount of fuse fuse] C 5 463d 751d 0/2 upstream: reported C repro on 2021/01/10 04:39
android-5-10 BUG: Dentry still in use [unmount of 9p 9p] C error 3 463d 465d 0/2 closed as dup on 2021/10/28 12:58
android-54 BUG: Dentry still in use [unmount of 9p 9p] C 11 465d 730d 0/2 upstream: reported C repro on 2021/01/31 03:12
android-54 BUG: Dentry still in use [unmount of tmpfs tmpfs] C 10 558d 729d 0/2 upstream: reported C repro on 2021/02/01 05:18
upstream BUG: Dentry still in use [unmount of tmpfs tmpfs] 2 1333d 1332d 13/24 fixed on 2019/07/10 21:40
upstream BUG: Dentry still in use [unmount of tmpfs tmpfs] (2) 3 809d 805d 0/24 auto-closed as invalid on 2021/02/11 21:17
android-5-10 BUG: Dentry still in use [unmount of ramfs ramfs] C error 3 465d 466d 1/2 fixed on 2021/12/01 19:46
android-5-10 BUG: Dentry still in use [unmount of overlay overlay] C error 2 459d 459d 0/2 closed as dup on 2021/10/29 08:14
android-54 BUG: Dentry still in use [unmount of overlay overlay] C 20 468d 767d 0/2 upstream: reported C repro on 2020/12/25 03:22
android-54 BUG: Dentry still in use [unmount of devpts devpts] C 11 475d 771d 0/2 upstream: reported C repro on 2020/12/21 14:18
android-5-10 BUG: Dentry still in use [unmount of devpts devpts] 1 463d 463d 0/2 closed as dup on 2021/10/28 13:08
android-54 BUG: Dentry still in use [unmount of binder binder] C 10 463d 752d 0/2 upstream: reported C repro on 2021/01/09 11:52
upstream BUG: Dentry still in use [unmount of sysfs sysfs] C done 6 1325d 1326d 13/24 fixed on 2019/07/10 21:40
android-5-10 BUG: Dentry still in use [unmount of sysfs sysfs] C error 4 462d 464d 0/2 closed as dup on 2021/10/28 13:08
android-54 BUG: Dentry still in use [unmount of sysfs sysfs] C 12 463d 744d 0/2 upstream: reported C repro on 2021/01/17 21:12
android-54 BUG: Dentry still in use [unmount of incremental-fs incremental-fs] C 13 462d 732d 0/2 upstream: reported C repro on 2021/01/29 12:48
android-5-10 BUG: Dentry still in use [unmount of incremental-fs incremental-fs] syz 2 461d 462d 0/2 closed as dup on 2021/10/28 13:08
android-54 BUG: Dentry still in use [unmount of vfat loop0] C 47 462d 776d 0/2 upstream: reported C repro on 2020/12/16 10:16
android-5-10 BUG: Dentry still in use [unmount of vfat loop0] C error 6 461d 465d 0/2 closed as dup on 2021/10/28 13:08
android-5-10 BUG: Dentry still in use [unmount of vfat loop1] 2 462d 465d 0/2 closed as dup on 2021/10/28 13:08
android-54 BUG: Dentry still in use [unmount of vfat loop1] (2) 2 488d 536d 0/2 auto-closed as invalid on 2022/01/28 18:54
android-54 BUG: Dentry still in use [unmount of vfat loop1] 4 662d 774d 0/2 auto-closed as invalid on 2021/08/07 13:29
android-54 BUG: Dentry still in use [unmount of vfat loop2] 5 464d 585d 0/2 auto-closed as invalid on 2022/02/21 04:30
android-54 BUG: Dentry still in use [unmount of vfat loop3] 6 573d 742d 0/2 auto-closed as invalid on 2021/11/04 02:41

Sample crash report:
BUG: Dentry ffff888119947330{i=0,n=.index}  still in use (1) [unmount of ext4 loop0]
------------[ cut here ]------------
WARNING: CPU: 0 PID: 367 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 syzkaller/managers/android-5-10/kernel/fs/dcache.c:1607
Modules linked in:
CPU: 0 PID: 367 Comm: syz-executor801 Not tainted 5.10.76-syzkaller-01178-g4944ec82ebb9 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:umount_check+0x18d/0x1d0 syzkaller/managers/android-5-10/kernel/fs/dcache.c:1607
Code: 8b 0b 49 81 c6 f8 03 00 00 48 c7 c7 00 40 2e 85 4c 89 e6 48 8b 55 d0 4c 89 e1 45 89 f8 31 c0 41 56 e8 5e d9 9e ff 48 83 c4 08 <0f> 0b e9 f1 fe ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c c9 fe ff
RSP: 0018:ffffc90000c47778 EFLAGS: 00010286
RAX: 0000000000000054 RBX: ffffffff86690d40 RCX: ae914cbbd0747b00
RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000
RBP: ffffc90000c477a8 R08: ffffffff81545288 R09: ffffed103ee095d8
R10: ffffed103ee095d8 R11: 0000000000000000 R12: ffff888119947330
R13: dffffc0000000000 R14: ffff88811d7403f8 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff2e482ff8 CR3: 000000000640f000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 d_walk+0x309/0x540 syzkaller/managers/android-5-10/kernel/fs/dcache.c:1326
 do_one_tree syzkaller/managers/android-5-10/kernel/fs/dcache.c:1623 [inline]
 shrink_dcache_for_umount+0x8e/0x1b0 syzkaller/managers/android-5-10/kernel/fs/dcache.c:1639
 generic_shutdown_super+0x66/0x2c0 syzkaller/managers/android-5-10/kernel/fs/super.c:447
 kill_block_super+0x80/0xe0 syzkaller/managers/android-5-10/kernel/fs/super.c:1446
 deactivate_locked_super+0xb0/0x100 syzkaller/managers/android-5-10/kernel/fs/super.c:335
 deactivate_super+0xa5/0xd0 syzkaller/managers/android-5-10/kernel/fs/super.c:366
 cleanup_mnt+0x45f/0x510 syzkaller/managers/android-5-10/kernel/fs/namespace.c:1118
 __cleanup_mnt+0x19/0x20 syzkaller/managers/android-5-10/kernel/fs/namespace.c:1125
 task_work_run+0x147/0x1b0 syzkaller/managers/android-5-10/kernel/kernel/task_work.c:154
 exit_task_work syzkaller/managers/android-5-10/kernel/./include/linux/task_work.h:30 [inline]
 do_exit+0x70e/0x23a0 syzkaller/managers/android-5-10/kernel/kernel/exit.c:813
 do_group_exit+0x16a/0x2d0 syzkaller/managers/android-5-10/kernel/kernel/exit.c:910
 get_signal+0x133e/0x1f80 syzkaller/managers/android-5-10/kernel/kernel/signal.c:2790
 arch_do_signal+0x8d/0x620 syzkaller/managers/android-5-10/kernel/arch/x86/kernel/signal.c:805
 exit_to_user_mode_loop syzkaller/managers/android-5-10/kernel/kernel/entry/common.c:161 [inline]
 exit_to_user_mode_prepare+0xaa/0xe0 syzkaller/managers/android-5-10/kernel/kernel/entry/common.c:191
 syscall_exit_to_user_mode+0x24/0x40 syzkaller/managers/android-5-10/kernel/kernel/entry/common.c:266
 do_syscall_64+0x3d/0x70 syzkaller/managers/android-5-10/kernel/arch/x86/entry/common.c:56
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7faac66e1299
Code: Unable to access opcode bytes at RIP 0x7faac66e126f.
RSP: 002b:00007faac668e2f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007faac67663e0 RCX: 00007faac66e1299
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007faac67663e8
RBP: 00007faac67663ec R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0030656c69662f2e
R13: 6e656d6572636e69 R14: e5d26e84aa4cf3c6 R15: 00007faac67663e8
---[ end trace 2864258e1230588c ]---
V

Crashes (63):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Title
ci2-android-5-10 2021/10/28 13:27 android12-5.10-lts 4944ec82ebb9 be531bb4 .config console log report syz C BUG: Dentry still in use [unmount of ext4 loop0]
ci2-android-5-10 2021/10/28 01:34 android12-5.10-lts 4944ec82ebb9 be531bb4 .config console log report syz C BUG: Dentry still in use [unmount of ext4 loop0]
ci2-android-5-10 2021/10/28 01:12 android12-5.10-lts 4944ec82ebb9 be531bb4 .config console log report syz C BUG: Dentry still in use [unmount of ext4 loop0]
ci2-android-5-10 2021/10/27 19:18 android12-5.10-lts 4944ec82ebb9 be531bb4 .config console log report syz C BUG: Dentry still in use [unmount of ext4 loop0]
ci2-android-5-10 2021/10/27 06:09 android12-5.10-lts 234d53d2bb60 d50eb50a .config console log report syz C BUG: Dentry still in use [unmount of ext4 loop0]
ci2-android-5-10 2021/10/27 03:49 android12-5.10-lts 234d53d2bb60 d50eb50a .config console log report syz C BUG: Dentry still in use [unmount of ext4 loop0]
ci2-android-5-10 2021/10/26 23:42 android12-5.10-lts 234d53d2bb60 d50eb50a .config console log report syz C BUG: Dentry still in use [unmount of ext4 loop0]
ci2-android-5-10 2021/10/26 04:07 android12-5.10-lts 234d53d2bb60 c1132b49 .config console log report syz C BUG: Dentry still in use [unmount of ext4 loop0]
ci2-android-5-10 2021/10/24 00:15 android12-5.10-lts 234d53d2bb60 282f03fb .config console log report syz C BUG: Dentry still in use [unmount of ext4 loop0]
ci2-android-5-10 2021/10/30 03:16 android12-5.10-lts 4944ec82ebb9 098b5d53 .config console log report syz C BUG: Dentry still in use in unmount
ci2-android-5-10 2021/12/01 09:54 android12-5.10-lts 76698ea35fd3 5fa3eacc .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/30 14:13 android12-5.10-lts 76698ea35fd3 80270552 .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/29 01:51 android12-5.10-lts 76698ea35fd3 63eeac02 .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/27 07:01 android12-5.10-lts 76698ea35fd3 63eeac02 .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/26 17:03 android12-5.10-lts 76698ea35fd3 63eeac02 .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/25 01:50 android12-5.10-lts 76698ea35fd3 545ab074 .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/23 12:46 android12-5.10-lts 76698ea35fd3 545ab074 .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/22 13:37 android12-5.10-lts 76698ea35fd3 545ab074 .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/20 10:54 android12-5.10-lts 76698ea35fd3 4eb20a4e .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/19 11:19 android12-5.10-lts 76698ea35fd3 31a30fc0 .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/19 08:08 android12-5.10-lts 76698ea35fd3 31a30fc0 .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/19 03:13 android12-5.10-lts 76698ea35fd3 31a30fc0 .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/18 15:00 android12-5.10-lts 76698ea35fd3 31a30fc0 .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/18 13:48 android12-5.10-lts 76698ea35fd3 cafff8b6 .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/18 12:40 android12-5.10-lts 76698ea35fd3 cafff8b6 .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/17 23:15 android12-5.10-lts 76698ea35fd3 cafff8b6 .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/17 17:43 android12-5.10-lts 76698ea35fd3 cafff8b6 .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/16 23:25 android12-5.10-lts 76698ea35fd3 cafff8b6 .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/15 08:52 android12-5.10-lts 76698ea35fd3 75b04091 .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/14 18:53 android12-5.10-lts 76698ea35fd3 75b04091 .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/14 00:25 android12-5.10-lts 76698ea35fd3 75b04091 .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/13 22:40 android12-5.10-lts 76698ea35fd3 75b04091 .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/13 06:41 android12-5.10-lts 76698ea35fd3 75b04091 .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/12 11:30 android12-5.10-lts 76698ea35fd3 75b04091 .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/12 09:18 android12-5.10-lts 76698ea35fd3 75b04091 .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/12 08:49 android12-5.10-lts 76698ea35fd3 75b04091 .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/11 22:44 android12-5.10-lts 76698ea35fd3 75b04091 .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/10 12:12 android12-5.10-lts 76698ea35fd3 55fa030c .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/09 05:41 android12-5.10-lts 76698ea35fd3 8ab17e57 .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/08 10:22 android12-5.10-lts 76698ea35fd3 4c1be0be .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/08 04:39 android12-5.10-lts 76698ea35fd3 4c1be0be .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/08 04:30 android12-5.10-lts 76698ea35fd3 4c1be0be .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/07 11:07 android12-5.10-lts 76698ea35fd3 4c1be0be .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/07 11:02 android12-5.10-lts 76698ea35fd3 4c1be0be .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/07 08:32 android12-5.10-lts 76698ea35fd3 4c1be0be .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/06 21:35 android12-5.10-lts 76698ea35fd3 4c1be0be .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/06 16:03 android12-5.10-lts 76698ea35fd3 4c1be0be .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/06 13:59 android12-5.10-lts 76698ea35fd3 4c1be0be .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/05 05:55 android12-5.10-lts 76698ea35fd3 4c1be0be .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/04 04:59 android12-5.10-lts 4944ec82ebb9 4c1be0be .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/03 10:12 android12-5.10-lts 4944ec82ebb9 17f3edd2 .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/03 08:04 android12-5.10-lts 4944ec82ebb9 17f3edd2 .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/02 15:02 android12-5.10-lts 4944ec82ebb9 098b5d53 .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/02 05:49 android12-5.10-lts 4944ec82ebb9 098b5d53 .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/01 22:55 android12-5.10-lts 4944ec82ebb9 098b5d53 .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/01 20:27 android12-5.10-lts 4944ec82ebb9 098b5d53 .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/01 15:52 android12-5.10-lts 4944ec82ebb9 098b5d53 .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/01 12:25 android12-5.10-lts 4944ec82ebb9 098b5d53 .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/01 10:24 android12-5.10-lts 4944ec82ebb9 098b5d53 .config console log report info BUG: Dentry still in use in unmount
ci2-android-5-10 2021/11/01 04:52 android12-5.10-lts 4944ec82ebb9 098b5d53 .config console log report info BUG: Dentry still in use in unmount
* Struck through repros no longer work on HEAD.