BUG: Dentry ffff8881e666b660{i=0,n=.index} still in use (1) [unmount of ext4 loop0] ------------[ cut here ]------------ WARNING: CPU: 0 PID: 300 at fs/dcache.c:1597 umount_check+0x179/0x1c0 fs/dcache.c:1588 Modules linked in: CPU: 0 PID: 300 Comm: syz-executor831 Not tainted 5.4.147-syzkaller-00038-g7eb444cc279e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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 20 14 c9 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 b7 0e b3 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:ffff8881de77fcc0 EFLAGS: 00010296 RAX: 0000000000000054 RBX: ffffffff85daa5c0 RCX: 753380694e8c5200 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffff8881de04b420 R08: ffffffff814b2a4c R09: ffffed103bceff51 R10: ffffed103bceff51 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881e666b660 FS: 0000555556b51300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556b5a628 CR3: 00000001e330b000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: d_walk+0x2d9/0x540 fs/dcache.c:1307 do_one_tree fs/dcache.c:1604 [inline] shrink_dcache_for_umount+0x8a/0x1a0 fs/dcache.c:1620 generic_shutdown_super+0x63/0x2a0 fs/super.c:447 kill_block_super+0x79/0xd0 fs/super.c:1444 deactivate_locked_super+0xaf/0x100 fs/super.c:335 deactivate_super+0x168/0x210 fs/super.c:366 cleanup_mnt+0x432/0x4e0 fs/namespace.c:1102 task_work_run+0x186/0x1b0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop arch/x86/entry/common.c:163 [inline] prepare_exit_to_usermode+0x2b0/0x310 arch/x86/entry/common.c:194 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f77262800d7 Code: ff d0 48 89 c7 b8 3c 00 00 00 0f 05 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd7935b168 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000029a73 RCX: 00007f77262800d7 RDX: 00007ffd7935b229 RSI: 0000000000000002 RDI: 00007ffd7935b220 RBP: 00007ffd7935b220 R08: 00000000ffffffff R09: 00007ffd7935b000 R10: 0000555556b52633 R11: 0000000000000202 R12: 00007ffd7935c2e0 R13: 0000555556b525f0 R14: 00007ffd7935b190 R15: 00007ffd7935c300 ---[ end trace dd99333897308e66 ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... BUG: Dentry ffff8881e6674220{i=0,n=.index} still in use (1) [unmount of ext4 loop0] ------------[ cut here ]------------ WARNING: CPU: 1 PID: 300 at fs/dcache.c:1597 umount_check+0x179/0x1c0 fs/dcache.c:1588 Modules linked in: CPU: 1 PID: 300 Comm: syz-executor831 Tainted: G W 5.4.147-syzkaller-00038-g7eb444cc279e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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 20 14 c9 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 b7 0e b3 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:ffff8881de77fcc0 EFLAGS: 00010296 RAX: 0000000000000054 RBX: ffffffff85daa5c0 RCX: 753380694e8c5200 RDX: 0000000000000000 RSI: 0000000080000002 RDI: 0000000000000000 RBP: ffff8881de049420 R08: ffffffff814b2a4c R09: ffffed103ede9608 R10: ffffed103ede9608 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881e6674220 FS: 0000555556b51300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556b5a628 CR3: 00000001e330b000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: d_walk+0x2d9/0x540 fs/dcache.c:1307 do_one_tree fs/dcache.c:1604 [inline] shrink_dcache_for_umount+0x8a/0x1a0 fs/dcache.c:1620 generic_shutdown_super+0x63/0x2a0 fs/super.c:447 kill_block_super+0x79/0xd0 fs/super.c:1444 deactivate_locked_super+0xaf/0x100 fs/super.c:335 deactivate_super+0x168/0x210 fs/super.c:366 cleanup_mnt+0x432/0x4e0 fs/namespace.c:1102 task_work_run+0x186/0x1b0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop arch/x86/entry/common.c:163 [inline] prepare_exit_to_usermode+0x2b0/0x310 arch/x86/entry/common.c:194 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f77262800d7 Code: ff d0 48 89 c7 b8 3c 00 00 00 0f 05 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd7935b168 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000029cd5 RCX: 00007f77262800d7 RDX: 00007ffd7935b229 RSI: 0000000000000002 RDI: 00007ffd7935b220 RBP: 00007ffd7935b220 R08: 00000000ffffffff R09: 00007ffd7935b000 R10: 0000555556b52633 R11: 0000000000000202 R12: 00007ffd7935c2e0 R13: 0000555556b525f0 R14: 00007ffd7935b190 R15: 00007ffd7935c300 ---[ end trace dd99333897308e67 ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... BUG: Dentry ffff8881e664d660{i=0,n=.index} still in use (1) [unmount of ext4 loop0] ------------[ cut here ]------------ WARNING: CPU: 1 PID: 300 at fs/dcache.c:1597 umount_check+0x179/0x1c0 fs/dcache.c:1588 Modules linked in: CPU: 1 PID: 300 Comm: syz-executor831 Tainted: G W 5.4.147-syzkaller-00038-g7eb444cc279e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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 20 14 c9 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 b7 0e b3 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:ffff8881de77fcc0 EFLAGS: 00010296 RAX: 0000000000000054 RBX: ffffffff85daa5c0 RCX: 753380694e8c5200 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffff8881ddc5e420 R08: ffffffff814b2a4c R09: ffffed103ede9608 R10: ffffed103ede9608 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881e664d660 FS: 0000555556b51300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556b5a628 CR3: 00000001e330b000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: d_walk+0x2d9/0x540 fs/dcache.c:1307 do_one_tree fs/dcache.c:1604 [inline] shrink_dcache_for_umount+0x8a/0x1a0 fs/dcache.c:1620 generic_shutdown_super+0x63/0x2a0 fs/super.c:447 kill_block_super+0x79/0xd0 fs/super.c:1444 deactivate_locked_super+0xaf/0x100 fs/super.c:335 deactivate_super+0x168/0x210 fs/super.c:366 cleanup_mnt+0x432/0x4e0 fs/namespace.c:1102 task_work_run+0x186/0x1b0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop arch/x86/entry/common.c:163 [inline] prepare_exit_to_usermode+0x2b0/0x310 arch/x86/entry/common.c:194 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f77262800d7 Code: ff d0 48 89 c7 b8 3c 00 00 00 0f 05 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd7935b168 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000029e65 RCX: 00007f77262800d7 RDX: 00007ffd7935b229 RSI: 0000000000000002 RDI: 00007ffd7935b220 RBP: 00007ffd7935b220 R08: 00000000ffffffff R09: 00007ffd7935b000 R10: 0000555556b52633 R11: 0000000000000202 R12: 00007ffd7935c2e0 R13: 0000555556b525f0 R14: 00007ffd7935b190 R15: 00007ffd7935c300 ---[ end trace dd99333897308e68 ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... BUG: Dentry ffff8881e66d6990{i=0,n=.index} still in use (1) [unmount of ext4 loop0] ------------[ cut here ]------------ WARNING: CPU: 1 PID: 300 at fs/dcache.c:1597 umount_check+0x179/0x1c0 fs/dcache.c:1588 Modules linked in: CPU: 1 PID: 300 Comm: syz-executor831 Tainted: G W 5.4.147-syzkaller-00038-g7eb444cc279e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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 20 14 c9 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 b7 0e b3 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:ffff8881de77fcc0 EFLAGS: 00010296 RAX: 0000000000000054 RBX: ffffffff85daa5c0 RCX: 753380694e8c5200 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffff8881ddc5f420 R08: ffffffff814b2a4c R09: ffffed103ede9608 R10: ffffed103ede9608 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881e66d6990 FS: 0000555556b51300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556b5a628 CR3: 00000001e330b000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: d_walk+0x2d9/0x540 fs/dcache.c:1307 do_one_tree fs/dcache.c:1604 [inline] shrink_dcache_for_umount+0x8a/0x1a0 fs/dcache.c:1620 generic_shutdown_super+0x63/0x2a0 fs/super.c:447 kill_block_super+0x79/0xd0 fs/super.c:1444 deactivate_locked_super+0xaf/0x100 fs/super.c:335 deactivate_super+0x168/0x210 fs/super.c:366 cleanup_mnt+0x432/0x4e0 fs/namespace.c:1102 task_work_run+0x186/0x1b0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop arch/x86/entry/common.c:163 [inline] prepare_exit_to_usermode+0x2b0/0x310 arch/x86/entry/common.c:194 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f77262800d7 Code: ff d0 48 89 c7 b8 3c 00 00 00 0f 05 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd7935b168 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 000000000002a001 RCX: 00007f77262800d7 RDX: 00007ffd7935b229 RSI: 0000000000000002 RDI: 00007ffd7935b220 RBP: 00007ffd7935b220 R08: 00000000ffffffff R09: 00007ffd7935b000 R10: 0000555556b52633 R11: 0000000000000202 R12: 00007ffd7935c2e0 R13: 0000555556b525f0 R14: 00007ffd7935b190 R15: 00007ffd7935c300 ---[ end trace dd99333897308e69 ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... BUG: Dentry ffff8881e66d7880{i=0,n=.index} still in use (1) [unmount of ext4 loop0] ------------[ cut here ]------------ WARNING: CPU: 0 PID: 300 at fs/dcache.c:1597 umount_check+0x179/0x1c0 fs/dcache.c:1588 Modules linked in: CPU: 0 PID: 300 Comm: syz-executor831 Tainted: G W 5.4.147-syzkaller-00038-g7eb444cc279e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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 20 14 c9 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 b7 0e b3 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:ffff8881de77fcc0 EFLAGS: 00010296 RAX: 0000000000000054 RBX: ffffffff85daa5c0 RCX: 753380694e8c5200 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffff8881ddf42420 R08: ffffffff814b2a4c R09: ffffed103edc9608 R10: ffffed103edc9608 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881e66d7880 FS: 0000555556b51300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556b5a628 CR3: 00000001e330b000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: d_walk+0x2d9/0x540 fs/dcache.c:1307 do_one_tree fs/dcache.c:1604 [inline] shrink_dcache_for_umount+0x8a/0x1a0 fs/dcache.c:1620 generic_shutdown_super+0x63/0x2a0 fs/super.c:447 kill_block_super+0x79/0xd0 fs/super.c:1444 deactivate_locked_super+0xaf/0x100 fs/super.c:335 deactivate_super+0x168/0x210 fs/super.c:366 cleanup_mnt+0x432/0x4e0 fs/namespace.c:1102 task_work_run+0x186/0x1b0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop arch/x86/entry/common.c:163 [inline] prepare_exit_to_usermode+0x2b0/0x310 arch/x86/entry/common.c:194 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f77262800d7 Code: ff d0 48 89 c7 b8 3c 00 00 00 0f 05 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd7935b168 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 000000000002a192 RCX: 00007f77262800d7 RDX: 00007ffd7935b229 RSI: 0000000000000002 RDI: 00007ffd7935b220 RBP: 00007ffd7935b220 R08: 00000000ffffffff R09: 00007ffd7935b000 R10: 0000555556b52633 R11: 0000000000000202 R12: 00007ffd7935c2e0 R13: 0000555556b525f0 R14: 00007ffd7935b190 R15: 00007ffd7935c300 ---[ end trace dd99333897308e6a ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... BUG: Dentry ffff8881e66d7dd0{i=0,n=.index} still in use (1) [unmount of ext4 loop0] ------------[ cut here ]------------ WARNING: CPU: 1 PID: 300 at fs/dcache.c:1597 umount_check+0x179/0x1c0 fs/dcache.c:1588 Modules linked in: CPU: 1 PID: 300 Comm: syz-executor831 Tainted: G W 5.4.147-syzkaller-00038-g7eb444cc279e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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 20 14 c9 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 b7 0e b3 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:ffff8881de77fcc0 EFLAGS: 00010296 RAX: 0000000000000054 RBX: ffffffff85daa5c0 RCX: 753380694e8c5200 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffff8881dd454420 R08: ffffffff814b2a4c R09: ffffed103bceff51 R10: ffffed103bceff51 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881e66d7dd0 FS: 0000555556b51300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556b5a628 CR3: 00000001e330b000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: d_walk+0x2d9/0x540 fs/dcache.c:1307 do_one_tree fs/dcache.c:1604 [inline] shrink_dcache_for_umount+0x8a/0x1a0 fs/dcache.c:1620 generic_shutdown_super+0x63/0x2a0 fs/super.c:447 kill_block_super+0x79/0xd0 fs/super.c:1444 deactivate_locked_super+0xaf/0x100 fs/super.c:335 deactivate_super+0x168/0x210 fs/super.c:366 cleanup_mnt+0x432/0x4e0 fs/namespace.c:1102 task_work_run+0x186/0x1b0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop arch/x86/entry/common.c:163 [inline] prepare_exit_to_usermode+0x2b0/0x310 arch/x86/entry/common.c:194 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f77262800d7 Code: ff d0 48 89 c7 b8 3c 00 00 00 0f 05 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd7935b168 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 000000000002a325 RCX: 00007f77262800d7 RDX: 00007ffd7935b229 RSI: 0000000000000002 RDI: 00007ffd7935b220 RBP: 00007ffd7935b220 R08: 00000000ffffffff R09: 00007ffd7935b000 R10: 0000555556b52633 R11: 0000000000000202 R12: 00007ffd7935c2e0 R13: 0000555556b525f0 R14: 00007ffd7935b190 R15: 00007ffd7935c300 ---[ end trace dd99333897308e6b ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... BUG: Dentry ffff8881e66a4330{i=0,n=.index} still in use (1) [unmount of ext4 loop0] ------------[ cut here ]------------ WARNING: CPU: 1 PID: 300 at fs/dcache.c:1597 umount_check+0x179/0x1c0 fs/dcache.c:1588 Modules linked in: CPU: 1 PID: 300 Comm: syz-executor831 Tainted: G W 5.4.147-syzkaller-00038-g7eb444cc279e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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 20 14 c9 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 b7 0e b3 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:ffff8881de77fcc0 EFLAGS: 00010296 RAX: 0000000000000054 RBX: ffffffff85daa5c0 RCX: 753380694e8c5200 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffff8881dd456420 R08: ffffffff814b2a4c R09: ffffed103ede9608 R10: ffffed103ede9608 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881e66a4330 FS: 0000555556b51300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556b5a628 CR3: 00000001e330b000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: d_walk+0x2d9/0x540 fs/dcache.c:1307 do_one_tree fs/dcache.c:1604 [inline] shrink_dcache_for_umount+0x8a/0x1a0 fs/dcache.c:1620 generic_shutdown_super+0x63/0x2a0 fs/super.c:447 kill_block_super+0x79/0xd0 fs/super.c:1444 deactivate_locked_super+0xaf/0x100 fs/super.c:335 deactivate_super+0x168/0x210 fs/super.c:366 cleanup_mnt+0x432/0x4e0 fs/namespace.c:1102 task_work_run+0x186/0x1b0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop arch/x86/entry/common.c:163 [inline] prepare_exit_to_usermode+0x2b0/0x310 arch/x86/entry/common.c:194 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f77262800d7 Code: ff d0 48 89 c7 b8 3c 00 00 00 0f 05 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd7935b168 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 000000000002a4c3 RCX: 00007f77262800d7 RDX: 00007ffd7935b229 RSI: 0000000000000002 RDI: 00007ffd7935b220 RBP: 00007ffd7935b220 R08: 00000000ffffffff R09: 00007ffd7935b000 R10: 0000555556b52633 R11: 0000000000000202 R12: 00007ffd7935c2e0 R13: 0000555556b525f0 R14: 00007ffd7935b190 R15: 00007ffd7935c300 ---[ end trace dd99333897308e6c ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... BUG: Dentry ffff8881e66a5990{i=0,n=.index} still in use (1) [unmount of ext4 loop0] ------------[ cut here ]------------ WARNING: CPU: 0 PID: 300 at fs/dcache.c:1597 umount_check+0x179/0x1c0 fs/dcache.c:1588 Modules linked in: CPU: 0 PID: 300 Comm: syz-executor831 Tainted: G W 5.4.147-syzkaller-00038-g7eb444cc279e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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 20 14 c9 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 b7 0e b3 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:ffff8881de77fcc0 EFLAGS: 00010296 RAX: 0000000000000054 RBX: ffffffff85daa5c0 RCX: 753380694e8c5200 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffff8881dd3dd420 R08: ffffffff814b2a4c R09: ffffed103edc9608 R10: ffffed103edc9608 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881e66a5990 FS: 0000555556b51300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556b5a628 CR3: 00000001e330b000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: d_walk+0x2d9/0x540 fs/dcache.c:1307 do_one_tree fs/dcache.c:1604 [inline] shrink_dcache_for_umount+0x8a/0x1a0 fs/dcache.c:1620 generic_shutdown_super+0x63/0x2a0 fs/super.c:447 kill_block_super+0x79/0xd0 fs/super.c:1444 deactivate_locked_super+0xaf/0x100 fs/super.c:335 deactivate_super+0x168/0x210 fs/super.c:366 cleanup_mnt+0x432/0x4e0 fs/namespace.c:1102 task_work_run+0x186/0x1b0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop arch/x86/entry/common.c:163 [inline] prepare_exit_to_usermode+0x2b0/0x310 arch/x86/entry/common.c:194 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f77262800d7 Code: ff d0 48 89 c7 b8 3c 00 00 00 0f 05 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd7935b168 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 000000000002a66a RCX: 00007f77262800d7 RDX: 00007ffd7935b229 RSI: 0000000000000002 RDI: 00007ffd7935b220 RBP: 00007ffd7935b220 R08: 00000000ffffffff R09: 00007ffd7935b000 R10: 0000555556b52633 R11: 0000000000000202 R12: 00007ffd7935c2e0 R13: 0000555556b525f0 R14: 00007ffd7935b190 R15: 00007ffd7935c300 ---[ end trace dd99333897308e6d ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... BUG: Dentry ffff8881e66e2550{i=0,n=.index} still in use (1) [unmount of ext4 loop0] ------------[ cut here ]------------ WARNING: CPU: 0 PID: 300 at fs/dcache.c:1597 umount_check+0x179/0x1c0 fs/dcache.c:1588 Modules linked in: CPU: 0 PID: 300 Comm: syz-executor831 Tainted: G W 5.4.147-syzkaller-00038-g7eb444cc279e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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 20 14 c9 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 b7 0e b3 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:ffff8881de77fcc0 EFLAGS: 00010296 RAX: 0000000000000054 RBX: ffffffff85daa5c0 RCX: 753380694e8c5200 RDX: 0000000000000000 RSI: 0000000080000002 RDI: 0000000000000000 RBP: ffff8881dd3da420 R08: ffffffff814b2a4c R09: ffffed103edc9608 R10: ffffed103edc9608 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881e66e2550 FS: 0000555556b51300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556b5a628 CR3: 00000001e330b000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: d_walk+0x2d9/0x540 fs/dcache.c:1307 do_one_tree fs/dcache.c:1604 [inline] shrink_dcache_for_umount+0x8a/0x1a0 fs/dcache.c:1620 generic_shutdown_super+0x63/0x2a0 fs/super.c:447 kill_block_super+0x79/0xd0 fs/super.c:1444 deactivate_locked_super+0xaf/0x100 fs/super.c:335 deactivate_super+0x168/0x210 fs/super.c:366 cleanup_mnt+0x432/0x4e0 fs/namespace.c:1102 task_work_run+0x186/0x1b0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop arch/x86/entry/common.c:163 [inline] prepare_exit_to_usermode+0x2b0/0x310 arch/x86/entry/common.c:194 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f77262800d7 Code: ff d0 48 89 c7 b8 3c 00 00 00 0f 05 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd7935b168 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 000000000002a7f3 RCX: 00007f77262800d7 RDX: 00007ffd7935b229 RSI: 0000000000000002 RDI: 00007ffd7935b220 RBP: 00007ffd7935b220 R08: 00000000ffffffff R09: 00007ffd7935b000 R10: 0000555556b52633 R11: 0000000000000202 R12: 00007ffd7935c2e0 R13: 0000555556b525f0 R14: 00007ffd7935b190 R15: 00007ffd7935c300 ---[ end trace dd99333897308e6e ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... BUG: Dentry ffff8881e66e2aa0{i=0,n=.index} still in use (1) [unmount of ext4 loop0] ------------[ cut here ]------------ WARNING: CPU: 0 PID: 300 at fs/dcache.c:1597 umount_check+0x179/0x1c0 fs/dcache.c:1588 Modules linked in: CPU: 0 PID: 300 Comm: syz-executor831 Tainted: G W 5.4.147-syzkaller-00038-g7eb444cc279e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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 20 14 c9 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 b7 0e b3 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:ffff8881de77fcc0 EFLAGS: 00010296 RAX: 0000000000000054 RBX: ffffffff85daa5c0 RCX: 753380694e8c5200 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffff8881dd3d9420 R08: ffffffff814b2a4c R09: ffffed103edc9608 R10: ffffed103edc9608 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881e66e2aa0 FS: 0000555556b51300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556b5a628 CR3: 00000001e330b000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: d_walk+0x2d9/0x540 fs/dcache.c:1307 do_one_tree fs/dcache.c:1604 [inline] shrink_dcache_for_umount+0x8a/0x1a0 fs/dcache.c:1620 generic_shutdown_super+0x63/0x2a0 fs/super.c:447 kill_block_super+0x79/0xd0 fs/super.c:1444 deactivate_locked_super+0xaf/0x100 fs/super.c:335 deactivate_super+0x168/0x210 fs/super.c:366 cleanup_mnt+0x432/0x4e0 fs/namespace.c:1102 task_work_run+0x186/0x1b0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop arch/x86/entry/common.c:163 [inline] prepare_exit_to_usermode+0x2b0/0x310 arch/x86/entry/common.c:194 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f77262800d7 Code: ff d0 48 89 c7 b8 3c 00 00 00 0f 05 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd7935b168 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 000000000002a973 RCX: 00007f77262800d7 RDX: 00007ffd7935b229 RSI: 0000000000000002 RDI: 00007ffd7935b220 RBP: 00007ffd7935b220 R08: 00000000ffffffff R09: 00007ffd7935b000 R10: 0000555556b52633 R11: 0000000000000202 R12: 00007ffd7935c2e0 R13: 0000555556b525f0 R14: 00007ffd7935b190 R15: 00007ffd7935c300 ---[ end trace dd99333897308e6f ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... BUG: Dentry ffff8881e6731660{i=0,n=.index} still in use (1) [unmount of ext4 loop0] ------------[ cut here ]------------ WARNING: CPU: 1 PID: 300 at fs/dcache.c:1597 umount_check+0x179/0x1c0 fs/dcache.c:1588 Modules linked in: CPU: 1 PID: 300 Comm: syz-executor831 Tainted: G W 5.4.147-syzkaller-00038-g7eb444cc279e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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 20 14 c9 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 b7 0e b3 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:ffff8881de77fcc0 EFLAGS: 00010296 RAX: 0000000000000054 RBX: ffffffff85daa5c0 RCX: 753380694e8c5200 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffff8881dc82d420 R08: ffffffff814b2a4c R09: ffffed103ede9608 R10: ffffed103ede9608 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881e6731660 FS: 0000555556b51300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556b5a628 CR3: 00000001e330b000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: d_walk+0x2d9/0x540 fs/dcache.c:1307 do_one_tree fs/dcache.c:1604 [inline] shrink_dcache_for_umount+0x8a/0x1a0 fs/dcache.c:1620 generic_shutdown_super+0x63/0x2a0 fs/super.c:447 kill_block_super+0x79/0xd0 fs/super.c:1444 deactivate_locked_super+0xaf/0x100 fs/super.c:335 deactivate_super+0x168/0x210 fs/super.c:366 cleanup_mnt+0x432/0x4e0 fs/namespace.c:1102 task_work_run+0x186/0x1b0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop arch/x86/entry/common.c:163 [inline] prepare_exit_to_usermode+0x2b0/0x310 arch/x86/entry/common.c:194 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f77262800d7 Code: ff d0 48 89 c7 b8 3c 00 00 00 0f 05 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd7935b168 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 000000000002aaf9 RCX: 00007f77262800d7 RDX: 00007ffd7935b22a RSI: 0000000000000002 RDI: 00007ffd7935b220 RBP: 00007ffd7935b220 R08: 00000000ffffffff R09: 00007ffd7935b000 R10: 0000555556b52633 R11: 0000000000000202 R12: 00007ffd7935c2e0 R13: 0000555556b525f0 R14: 00007ffd7935b190 R15: 00007ffd7935c300 ---[ end trace dd99333897308e70 ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... BUG: Dentry ffff8881e6731990{i=0,n=.index} still in use (1) [unmount of ext4 loop0] ------------[ cut here ]------------ WARNING: CPU: 0 PID: 300 at fs/dcache.c:1597 umount_check+0x179/0x1c0 fs/dcache.c:1588 Modules linked in: CPU: 0 PID: 300 Comm: syz-executor831 Tainted: G W 5.4.147-syzkaller-00038-g7eb444cc279e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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 20 14 c9 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 b7 0e b3 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:ffff8881de77fcc0 EFLAGS: 00010296 RAX: 0000000000000054 RBX: ffffffff85daa5c0 RCX: 753380694e8c5200 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffff8881ddf47420 R08: ffffffff814b2a4c R09: ffffed103bceff51 R10: ffffed103bceff51 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881e6731990 FS: 0000555556b51300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556b5a628 CR3: 00000001e330b000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: d_walk+0x2d9/0x540 fs/dcache.c:1307 do_one_tree fs/dcache.c:1604 [inline] shrink_dcache_for_umount+0x8a/0x1a0 fs/dcache.c:1620 generic_shutdown_super+0x63/0x2a0 fs/super.c:447 kill_block_super+0x79/0xd0 fs/super.c:1444 deactivate_locked_super+0xaf/0x100 fs/super.c:335 deactivate_super+0x168/0x210 fs/super.c:366 cleanup_mnt+0x432/0x4e0 fs/namespace.c:1102 task_work_run+0x186/0x1b0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop arch/x86/entry/common.c:163 [inline] prepare_exit_to_usermode+0x2b0/0x310 arch/x86/entry/common.c:194 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f77262800d7 Code: ff d0 48 89 c7 b8 3c 00 00 00 0f 05 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd7935b168 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 000000000002ac89 RCX: 00007f77262800d7 RDX: 00007ffd7935b22a RSI: 0000000000000002 RDI: 00007ffd7935b220 RBP: 00007ffd7935b220 R08: 00000000ffffffff R09: 00007ffd7935b000 R10: 0000555556b52633 R11: 0000000000000202 R12: 00007ffd7935c2e0 R13: 0000555556b525f0 R14: 00007ffd7935b190 R15: 00007ffd7935c300 ---[ end trace dd99333897308e71 ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... BUG: Dentry ffff8881e66f3990{i=0,n=.index} still in use (1) [unmount of ext4 loop0] ------------[ cut here ]------------ WARNING: CPU: 0 PID: 300 at fs/dcache.c:1597 umount_check+0x179/0x1c0 fs/dcache.c:1588 Modules linked in: CPU: 0 PID: 300 Comm: syz-executor831 Tainted: G W 5.4.147-syzkaller-00038-g7eb444cc279e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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 20 14 c9 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 b7 0e b3 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:ffff8881de77fcc0 EFLAGS: 00010296 RAX: 0000000000000054 RBX: ffffffff85daa5c0 RCX: 753380694e8c5200 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffff8881f30f6420 R08: ffffffff814b2a4c R09: ffffed103edc9608 R10: ffffed103edc9608 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881e66f3990 FS: 0000555556b51300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556b5a628 CR3: 00000001e330b000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: d_walk+0x2d9/0x540 fs/dcache.c:1307 do_one_tree fs/dcache.c:1604 [inline] shrink_dcache_for_umount+0x8a/0x1a0 fs/dcache.c:1620 generic_shutdown_super+0x63/0x2a0 fs/super.c:447 kill_block_super+0x79/0xd0 fs/super.c:1444 deactivate_locked_super+0xaf/0x100 fs/super.c:335 deactivate_super+0x168/0x210 fs/super.c:366 cleanup_mnt+0x432/0x4e0 fs/namespace.c:1102 task_work_run+0x186/0x1b0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop arch/x86/entry/common.c:163 [inline] prepare_exit_to_usermode+0x2b0/0x310 arch/x86/entry/common.c:194 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f77262800d7 Code: ff d0 48 89 c7 b8 3c 00 00 00 0f 05 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd7935b168 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 000000000002ae23 RCX: 00007f77262800d7 RDX: 00007ffd7935b22a RSI: 0000000000000002 RDI: 00007ffd7935b220 RBP: 00007ffd7935b220 R08: 00000000ffffffff R09: 00007ffd7935b000 R10: 0000555556b52633 R11: 0000000000000202 R12: 00007ffd7935c2e0 R13: 0000555556b525f0 R14: 00007ffd7935b190 R15: 00007ffd7935c300 ---[ end trace dd99333897308e72 ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... BUG: Dentry ffff8881e66f5bb0{i=0,n=.index} still in use (1) [unmount of ext4 loop0] ------------[ cut here ]------------ WARNING: CPU: 1 PID: 300 at fs/dcache.c:1597 umount_check+0x179/0x1c0 fs/dcache.c:1588 Modules linked in: CPU: 1 PID: 300 Comm: syz-executor831 Tainted: G W 5.4.147-syzkaller-00038-g7eb444cc279e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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 20 14 c9 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 b7 0e b3 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:ffff8881de77fcc0 EFLAGS: 00010296 RAX: 0000000000000054 RBX: ffffffff85daa5c0 RCX: 753380694e8c5200 RDX: 0000000000000000 RSI: 0000000080000002 RDI: 0000000000000000 RBP: ffff8881dc82b420 R08: ffffffff814b2a4c R09: ffffed103ede9608 R10: ffffed103ede9608 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881e66f5bb0 FS: 0000555556b51300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556b5a628 CR3: 00000001e330b000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: d_walk+0x2d9/0x540 fs/dcache.c:1307 do_one_tree fs/dcache.c:1604 [inline] shrink_dcache_for_umount+0x8a/0x1a0 fs/dcache.c:1620 generic_shutdown_super+0x63/0x2a0 fs/super.c:447 kill_block_super+0x79/0xd0 fs/super.c:1444 deactivate_locked_super+0xaf/0x100 fs/super.c:335 deactivate_super+0x168/0x210 fs/super.c:366 cleanup_mnt+0x432/0x4e0 fs/namespace.c:1102 task_work_run+0x186/0x1b0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop arch/x86/entry/common.c:163 [inline] prepare_exit_to_usermode+0x2b0/0x310 arch/x86/entry/common.c:194 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f77262800d7 Code: ff d0 48 89 c7 b8 3c 00 00 00 0f 05 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd7935b168 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 000000000002afae RCX: 00007f77262800d7 RDX: 00007ffd7935b22a RSI: 0000000000000002 RDI: 00007ffd7935b220 RBP: 00007ffd7935b220 R08: 00000000ffffffff R09: 00007ffd7935b000 R10: 0000555556b52633 R11: 0000000000000202 R12: 00007ffd7935c2e0 R13: 0000555556b525f0 R14: 00007ffd7935b190 R15: 00007ffd7935c300 ---[ end trace dd99333897308e73 ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... BUG: Dentry ffff8881e66f7660{i=0,n=.index} still in use (1) [unmount of ext4 loop0] ------------[ cut here ]------------ WARNING: CPU: 1 PID: 300 at fs/dcache.c:1597 umount_check+0x179/0x1c0 fs/dcache.c:1588 Modules linked in: CPU: 1 PID: 300 Comm: syz-executor831 Tainted: G W 5.4.147-syzkaller-00038-g7eb444cc279e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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 20 14 c9 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 b7 0e b3 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:ffff8881de77fcc0 EFLAGS: 00010296 RAX: 0000000000000054 RBX: ffffffff85daa5c0 RCX: 753380694e8c5200 RDX: 0000000000000000 RSI: 0000000080000002 RDI: 0000000000000000 RBP: ffff8881f3ccb420 R08: ffffffff814b2a4c R09: ffffed103ede9608 R10: ffffed103ede9608 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881e66f7660 FS: 0000555556b51300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556b5a628 CR3: 00000001e330b000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: d_walk+0x2d9/0x540 fs/dcache.c:1307 do_one_tree fs/dcache.c:1604 [inline] shrink_dcache_for_umount+0x8a/0x1a0 fs/dcache.c:1620 generic_shutdown_super+0x63/0x2a0 fs/super.c:447 kill_block_super+0x79/0xd0 fs/super.c:1444 deactivate_locked_super+0xaf/0x100 fs/super.c:335 deactivate_super+0x168/0x210 fs/super.c:366 cleanup_mnt+0x432/0x4e0 fs/namespace.c:1102 task_work_run+0x186/0x1b0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop arch/x86/entry/common.c:163 [inline] prepare_exit_to_usermode+0x2b0/0x310 arch/x86/entry/common.c:194 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f77262800d7 Code: ff d0 48 89 c7 b8 3c 00 00 00 0f 05 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd7935b168 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 000000000002b130 RCX: 00007f77262800d7 RDX: 00007ffd7935b22a RSI: 0000000000000002 RDI: 00007ffd7935b220 RBP: 00007ffd7935b220 R08: 00000000ffffffff R09: 00007ffd7935b000 R10: 0000555556b52633 R11: 0000000000000202 R12: 00007ffd7935c2e0 R13: 0000555556b525f0 R14: 00007ffd7935b190 R15: 00007ffd7935c300 ---[ end trace dd99333897308e74 ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... BUG: Dentry ffff8881e66f8990{i=0,n=.index} still in use (1) [unmount of ext4 loop0] ------------[ cut here ]------------ WARNING: CPU: 1 PID: 300 at fs/dcache.c:1597 umount_check+0x179/0x1c0 fs/dcache.c:1588 Modules linked in: CPU: 1 PID: 300 Comm: syz-executor831 Tainted: G W 5.4.147-syzkaller-00038-g7eb444cc279e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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 20 14 c9 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 b7 0e b3 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:ffff8881de77fcc0 EFLAGS: 00010296 RAX: 0000000000000054 RBX: ffffffff85daa5c0 RCX: 753380694e8c5200 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffff8881ef533420 R08: ffffffff814b2a4c R09: ffffed103ede9608 R10: ffffed103ede9608 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881e66f8990 FS: 0000555556b51300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556b5a628 CR3: 00000001e330b000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: d_walk+0x2d9/0x540 fs/dcache.c:1307 do_one_tree fs/dcache.c:1604 [inline] shrink_dcache_for_umount+0x8a/0x1a0 fs/dcache.c:1620 generic_shutdown_super+0x63/0x2a0 fs/super.c:447 kill_block_super+0x79/0xd0 fs/super.c:1444 deactivate_locked_super+0xaf/0x100 fs/super.c:335 deactivate_super+0x168/0x210 fs/super.c:366 cleanup_mnt+0x432/0x4e0 fs/namespace.c:1102 task_work_run+0x186/0x1b0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop arch/x86/entry/common.c:163 [inline] prepare_exit_to_usermode+0x2b0/0x310 arch/x86/entry/common.c:194 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f77262800d7 Code: ff d0 48 89 c7 b8 3c 00 00 00 0f 05 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd7935b168 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 000000000002b2b6 RCX: 00007f77262800d7 RDX: 00007ffd7935b22a RSI: 0000000000000002 RDI: 00007ffd7935b220 RBP: 00007ffd7935b220 R08: 00000000ffffffff R09: 00007ffd7935b000 R10: 0000555556b52633 R11: 0000000000000202 R12: 00007ffd7935c2e0 R13: 0000555556b525f0 R14: 00007ffd7935b190 R15: 00007ffd7935c300 ---[ end trace dd99333897308e75 ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... BUG: Dentry ffff8881e66fa770{i=0,n=.index} still in use (1) [unmount of ext4 loop0] ------------[ cut here ]------------ WARNING: CPU: 1 PID: 300 at fs/dcache.c:1597 umount_check+0x179/0x1c0 fs/dcache.c:1588 Modules linked in: CPU: 1 PID: 300 Comm: syz-executor831 Tainted: G W 5.4.147-syzkaller-00038-g7eb444cc279e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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 20 14 c9 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 b7 0e b3 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:ffff8881de77fcc0 EFLAGS: 00010296 RAX: 0000000000000054 RBX: ffffffff85daa5c0 RCX: 753380694e8c5200 RDX: 0000000000000000 RSI: 0000000080000002 RDI: 0000000000000000 RBP: ffff8881ef535420 R08: ffffffff814b2a4c R09: ffffed103ede9608 R10: ffffed103ede9608 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881e66fa770 FS: 0000555556b51300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556b5a628 CR3: 00000001e330b000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: d_walk+0x2d9/0x540 fs/dcache.c:1307 do_one_tree fs/dcache.c:1604 [inline] shrink_dcache_for_umount+0x8a/0x1a0 fs/dcache.c:1620 generic_shutdown_super+0x63/0x2a0 fs/super.c:447 kill_block_super+0x79/0xd0 fs/super.c:1444 deactivate_locked_super+0xaf/0x100 fs/super.c:335 deactivate_super+0x168/0x210 fs/super.c:366 cleanup_mnt+0x432/0x4e0 fs/namespace.c:1102 task_work_run+0x186/0x1b0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop arch/x86/entry/common.c:163 [inline] prepare_exit_to_usermode+0x2b0/0x310 arch/x86/entry/common.c:194 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f77262800d7 Code: ff d0 48 89 c7 b8 3c 00 00 00 0f 05 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd7935b168 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 000000000002b43d RCX: 00007f77262800d7 RDX: 00007ffd7935b22a RSI: 0000000000000002 RDI: 00007ffd7935b220 RBP: 00007ffd7935b220 R08: 00000000ffffffff R09: 00007ffd7935b000 R10: 0000555556b52633 R11: 0000000000000202 R12: 00007ffd7935c2e0 R13: 0000555556b525f0 R14: 00007ffd7935b190 R15: 00007ffd7935c300 ---[ end trace dd99333897308e76 ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... BUG: Dentry ffff8881e66fd880{i=0,n=.index} still in use (1) [unmount of ext4 loop0] ------------[ cut here ]------------ WARNING: CPU: 1 PID: 300 at fs/dcache.c:1597 umount_check+0x179/0x1c0 fs/dcache.c:1588 Modules linked in: CPU: 1 PID: 300 Comm: syz-executor831 Tainted: G W 5.4.147-syzkaller-00038-g7eb444cc279e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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 20 14 c9 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 b7 0e b3 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:ffff8881de77fcc0 EFLAGS: 00010296 RAX: 0000000000000054 RBX: ffffffff85daa5c0 RCX: 753380694e8c5200 RDX: 0000000000000000 RSI: 0000000080000002 RDI: 0000000000000000 RBP: ffff8881f0193420 R08: ffffffff814b2a4c R09: ffffed103ede9608 R10: ffffed103ede9608 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881e66fd880 FS: 0000555556b51300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556b5a628 CR3: 00000001e330b000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: d_walk+0x2d9/0x540 fs/dcache.c:1307 do_one_tree fs/dcache.c:1604 [inline] shrink_dcache_for_umount+0x8a/0x1a0 fs/dcache.c:1620 generic_shutdown_super+0x63/0x2a0 fs/super.c:447 kill_block_super+0x79/0xd0 fs/super.c:1444 deactivate_locked_super+0xaf/0x100 fs/super.c:335 deactivate_super+0x168/0x210 fs/super.c:366 cleanup_mnt+0x432/0x4e0 fs/namespace.c:1102 task_work_run+0x186/0x1b0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop arch/x86/entry/common.c:163 [inline] prepare_exit_to_usermode+0x2b0/0x310 arch/x86/entry/common.c:194 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f77262800d7 Code: ff d0 48 89 c7 b8 3c 00 00 00 0f 05 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd7935b168 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 000000000002b5d0 RCX: 00007f77262800d7 RDX: 00007ffd7935b22a RSI: 0000000000000002 RDI: 00007ffd7935b220 RBP: 00007ffd7935b220 R08: 00000000ffffffff R09: 00007ffd7935b000 R10: 0000555556b52633 R11: 0000000000000202 R12: 00007ffd7935c2e0 R13: 0000555556b525f0 R14: 00007ffd7935b190 R15: 00007ffd7935c300 ---[ end trace dd99333897308e77 ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... BUG: Dentry ffff8881e66feee0{i=0,n=.index} still in use (1) [unmount of ext4 loop0] ------------[ cut here ]------------ WARNING: CPU: 0 PID: 300 at fs/dcache.c:1597 umount_check+0x179/0x1c0 fs/dcache.c:1588 Modules linked in: CPU: 0 PID: 300 Comm: syz-executor831 Tainted: G W 5.4.147-syzkaller-00038-g7eb444cc279e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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 20 14 c9 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 b7 0e b3 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:ffff8881de77fcc0 EFLAGS: 00010296 RAX: 0000000000000054 RBX: ffffffff85daa5c0 RCX: 753380694e8c5200 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffff8881eedfa420 R08: ffffffff814b2a4c R09: ffffed103edc9608 R10: ffffed103edc9608 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881e66feee0 FS: 0000555556b51300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556b5a628 CR3: 00000001e330b000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: d_walk+0x2d9/0x540 fs/dcache.c:1307 do_one_tree fs/dcache.c:1604 [inline] shrink_dcache_for_umount+0x8a/0x1a0 fs/dcache.c:1620 generic_shutdown_super+0x63/0x2a0 fs/super.c:447 kill_block_super+0x79/0xd0 fs/super.c:1444 deactivate_locked_super+0xaf/0x100 fs/super.c:335 deactivate_super+0x168/0x210 fs/super.c:366 cleanup_mnt+0x432/0x4e0 fs/namespace.c:1102 task_work_run+0x186/0x1b0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop arch/x86/entry/common.c:163 [inline] prepare_exit_to_usermode+0x2b0/0x310 arch/x86/entry/common.c:194 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f77262800d7 Code: ff d0 48 89 c7 b8 3c 00 00 00 0f 05 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd7935b168 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 000000000002b76a RCX: 00007f77262800d7 RDX: 00007ffd7935b22a RSI: 0000000000000002 RDI: 00007ffd7935b220 RBP: 00007ffd7935b220 R08: 00000000ffffffff R09: 00007ffd7935b000 R10: 0000555556b52633 R11: 0000000000000202 R12: 00007ffd7935c2e0 R13: 0000555556b525f0 R14: 00007ffd7935b190 R15: 00007ffd7935c300 ---[ end trace dd99333897308e78 ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... BUG: Dentry ffff8881e66ffbb0{i=0,n=.index} still in use (1) [unmount of ext4 loop0] ------------[ cut here ]------------ WARNING: CPU: 0 PID: 300 at fs/dcache.c:1597 umount_check+0x179/0x1c0 fs/dcache.c:1588 Modules linked in: CPU: 0 PID: 300 Comm: syz-executor831 Tainted: G W 5.4.147-syzkaller-00038-g7eb444cc279e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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 20 14 c9 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 b7 0e b3 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:ffff8881de77fcc0 EFLAGS: 00010296 RAX: 0000000000000054 RBX: ffffffff85daa5c0 RCX: 753380694e8c5200 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffff8881f30f2420 R08: ffffffff814b2a4c R09: ffffed103edc9608 R10: ffffed103edc9608 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881e66ffbb0 FS: 0000555556b51300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556b5a628 CR3: 00000001e330b000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: d_walk+0x2d9/0x540 fs/dcache.c:1307 do_one_tree fs/dcache.c:1604 [inline] shrink_dcache_for_umount+0x8a/0x1a0 fs/dcache.c:1620 generic_shutdown_super+0x63/0x2a0 fs/super.c:447 kill_block_super+0x79/0xd0 fs/super.c:1444 deactivate_locked_super+0xaf/0x100 fs/super.c:335 deactivate_super+0x168/0x210 fs/super.c:366 cleanup_mnt+0x432/0x4e0 fs/namespace.c:1102 task_work_run+0x186/0x1b0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop arch/x86/entry/common.c:163 [inline] prepare_exit_to_usermode+0x2b0/0x310 arch/x86/entry/common.c:194 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f77262800d7 Code: ff d0 48 89 c7 b8 3c 00 00 00 0f 05 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd7935b168 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 000000000002b900 RCX: 00007f77262800d7 RDX: 00007ffd7935b22a RSI: 0000000000000002 RDI: 00007ffd7935b220 RBP: 00007ffd7935b220 R08: 00000000ffffffff R09: 00007ffd7935b000 R10: 0000555556b52633 R11: 0000000000000202 R12: 00007ffd7935c2e0 R13: 0000555556b525f0 R14: 00007ffd7935b190 R15: 00007ffd7935c300 ---[ end trace dd99333897308e79 ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... BUG: Dentry ffff8881e66ffee0{i=0,n=.index} still in use (1) [unmount of ext4 loop0] ------------[ cut here ]------------ WARNING: CPU: 1 PID: 300 at fs/dcache.c:1597 umount_check+0x179/0x1c0 fs/dcache.c:1588 Modules linked in: CPU: 1 PID: 300 Comm: syz-executor831 Tainted: G W 5.4.147-syzkaller-00038-g7eb444cc279e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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 20 14 c9 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 b7 0e b3 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:ffff8881de77fcc0 EFLAGS: 00010296 RAX: 0000000000000054 RBX: ffffffff85daa5c0 RCX: 753380694e8c5200 RDX: 0000000000000000 RSI: 0000000080000002 RDI: 0000000000000000 RBP: ffff8881f30ed420 R08: ffffffff814b2a4c R09: ffffed103bceff51 R10: ffffed103bceff51 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881e66ffee0 FS: 0000555556b51300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556b5a628 CR3: 00000001e330b000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: d_walk+0x2d9/0x540 fs/dcache.c:1307 do_one_tree fs/dcache.c:1604 [inline] shrink_dcache_for_umount+0x8a/0x1a0 fs/dcache.c:1620 generic_shutdown_super+0x63/0x2a0 fs/super.c:447 kill_block_super+0x79/0xd0 fs/super.c:1444 deactivate_locked_super+0xaf/0x100 fs/super.c:335 deactivate_super+0x168/0x210 fs/super.c:366 cleanup_mnt+0x432/0x4e0 fs/namespace.c:1102 task_work_run+0x186/0x1b0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop arch/x86/entry/common.c:163 [inline] prepare_exit_to_usermode+0x2b0/0x310 arch/x86/entry/common.c:194 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f77262800d7 Code: ff d0 48 89 c7 b8 3c 00 00 00 0f 05 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd7935b168 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 000000000002ba8f RCX: 00007f77262800d7 RDX: 00007ffd7935b22a RSI: 0000000000000002 RDI: 00007ffd7935b220 RBP: 00007ffd7935b220 R08: 00000000ffffffff R09: 00007ffd7935b000 R10: 0000555556b52633 R11: 0000000000000202 R12: 00007ffd7935c2e0 R13: 0000555556b525f0 R14: 00007ffd7935b190 R15: 00007ffd7935c300 ---[ end trace dd99333897308e7a ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... BUG: Dentry ffff8881e67a6660{i=0,n=.index} still in use (1) [unmount of ext4 loop0] ------------[ cut here ]------------ WARNING: CPU: 1 PID: 300 at fs/dcache.c:1597 umount_check+0x179/0x1c0 fs/dcache.c:1588 Modules linked in: CPU: 1 PID: 300 Comm: syz-executor831 Tainted: G W 5.4.147-syzkaller-00038-g7eb444cc279e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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 20 14 c9 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 b7 0e b3 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:ffff8881de77fcc0 EFLAGS: 00010296 RAX: 0000000000000054 RBX: ffffffff85daa5c0 RCX: 753380694e8c5200 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffff8881eed2c420 R08: ffffffff814b2a4c R09: ffffed103ede9608 R10: ffffed103ede9608 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881e67a6660 FS: 0000555556b51300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556b5a628 CR3: 00000001e330b000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: d_walk+0x2d9/0x540 fs/dcache.c:1307 do_one_tree fs/dcache.c:1604 [inline] shrink_dcache_for_umount+0x8a/0x1a0 fs/dcache.c:1620 generic_shutdown_super+0x63/0x2a0 fs/super.c:447 kill_block_super+0x79/0xd0 fs/super.c:1444 deactivate_locked_super+0xaf/0x100 fs/super.c:335 deactivate_super+0x168/0x210 fs/super.c:366 cleanup_mnt+0x432/0x4e0 fs/namespace.c:1102 task_work_run+0x186/0x1b0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop arch/x86/entry/common.c:163 [inline] prepare_exit_to_usermode+0x2b0/0x310 arch/x86/entry/common.c:194 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f77262800d7 Code: ff d0 48 89 c7 b8 3c 00 00 00 0f 05 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd7935b168 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 000000000002bc25 RCX: 00007f77262800d7 RDX: 00007ffd7935b22a RSI: 0000000000000002 RDI: 00007ffd7935b220 RBP: 00007ffd7935b220 R08: 00000000ffffffff R09: 00007ffd7935b000 R10: 0000555556b52633 R11: 0000000000000202 R12: 00007ffd7935c2e0 R13: 0000555556b525f0 R14: 00007ffd7935b190 R15: 00007ffd7935c300 ---[ end trace dd99333897308e7b ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... BUG: Dentry ffff8881e6706660{i=0,n=.index} still in use (1) [unmount of ext4 loop0] ------------[ cut here ]------------ WARNING: CPU: 1 PID: 300 at fs/dcache.c:1597 umount_check+0x179/0x1c0 fs/dcache.c:1588 Modules linked in: CPU: 1 PID: 300 Comm: syz-executor831 Tainted: G W 5.4.147-syzkaller-00038-g7eb444cc279e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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 20 14 c9 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 b7 0e b3 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:ffff8881de77fcc0 EFLAGS: 00010296 RAX: 0000000000000054 RBX: ffffffff85daa5c0 RCX: 753380694e8c5200 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffff8881eed2b420 R08: ffffffff814b2a4c R09: ffffed103ede9608 R10: ffffed103ede9608 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881e6706660 FS: 0000555556b51300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556b5a628 CR3: 00000001e330b000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: d_walk+0x2d9/0x540 fs/dcache.c:1307 do_one_tree fs/dcache.c:1604 [inline] shrink_dcache_for_umount+0x8a/0x1a0 fs/dcache.c:1620 generic_shutdown_super+0x63/0x2a0 fs/super.c:447 kill_block_super+0x79/0xd0 fs/super.c:1444 deactivate_locked_super+0xaf/0x100 fs/super.c:335 deactivate_super+0x168/0x210 fs/super.c:366 cleanup_mnt+0x432/0x4e0 fs/namespace.c:1102 task_work_run+0x186/0x1b0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop arch/x86/entry/common.c:163 [inline] prepare_exit_to_usermode+0x2b0/0x310 arch/x86/entry/common.c:194 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f77262800d7 Code: ff d0 48 89 c7 b8 3c 00 00 00 0f 05 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd7935b168 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 000000000002bdd8 RCX: 00007f77262800d7 RDX: 00007ffd7935b22a RSI: 0000000000000002 RDI: 00007ffd7935b220 RBP: 00007ffd7935b220 R08: 00000000ffffffff R09: 00007ffd7935b000 R10: 0000555556b52633 R11: 0000000000000202 R12: 00007ffd7935c2e0 R13: 0000555556b525f0 R14: 00007ffd7935b190 R15: 00007ffd7935c300 ---[ end trace dd99333897308e7c ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... BUG: Dentry ffff8881ed847cc0{i=0,n=.index} still in use (1) [unmount of ext4 loop0] ------------[ cut here ]------------ WARNING: CPU: 1 PID: 300 at fs/dcache.c:1597 umount_check+0x179/0x1c0 fs/dcache.c:1588 Modules linked in: CPU: 1 PID: 300 Comm: syz-executor831 Tainted: G W 5.4.147-syzkaller-00038-g7eb444cc279e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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 20 14 c9 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 b7 0e b3 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:ffff8881de77fcc0 EFLAGS: 00010296 RAX: 0000000000000054 RBX: ffffffff85daa5c0 RCX: 753380694e8c5200 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffff8881ee369420 R08: ffffffff814b2a4c R09: ffffed103bceff51 R10: ffffed103bceff51 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881ed847cc0 FS: 0000555556b51300(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556b5a628 CR3: 00000001e330b000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: d_walk+0x2d9/0x540 fs/dcache.c:1307 do_one_tree fs/dcache.c:1604 [inline] shrink_dcache_for_umount+0x8a/0x1a0 fs/dcache.c:1620 generic_shutdown_super+0x63/0x2a0 fs/super.c:447 kill_block_super+0x79/0xd0 fs/super.c:1444 deactivate_locked_super+0xaf/0x100 fs/super.c:335 deactivate_super+0x168/0x210 fs/super.c:366 cleanup_mnt+0x432/0x4e0 fs/namespace.c:1102 task_work_run+0x186/0x1b0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop arch/x86/entry/common.c:163 [inline] prepare_exit_to_usermode+0x2b0/0x310 arch/x86/entry/common.c:194 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f77262800d7 Code: ff d0 48 89 c7 b8 3c 00 00 00 0f 05 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd7935b168 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 000000000002bf6c RCX: 00007f77262800d7 RDX: 00007ffd7935b22a RSI: 0000000000000002 RDI: 00007ffd7935b220 RBP: 00007ffd7935b220 R08: 00000000ffffffff R09: 00007ffd7935b000 R10: 0000555556b52633 R11: 0000000000000202 R12: 00007ffd7935c2e0 R13: 0000555556b525f0 R14: 00007ffd7935b190 R15: 00007ffd7935c300 ---[ end trace dd99333897308e7d ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... BUG: Dentry ffff8881e67b0990{i=0,n=.index} still in use (1) [unmount of ext4 loop0] ------------[ cut here ]------------ WARNING: CPU: 0 PID: 300 at fs/dcache.c:1597 umount_check+0x179/0x1c0 fs/dcache.c:1588 Modules linked in: CPU: 0 PID: 300 Comm: syz-executor831 Tainted: G W 5.4.147-syzkaller-00038-g7eb444cc279e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 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 20 14 c9 84 4c 89 fe 4c 89 f2 4c 89 f9 45 89 e8 31 c0 55 e8 b7 0e b3 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:ffff8881de77fcc0 EFLAGS: 00010296 RAX: 0000000000000054 RBX: ffffffff85daa5c0 RCX: 753380694e8c5200 RDX: 0000000000000000 RSI: 0000000080000002 RDI: 0000000000000000 RBP: ffff8881f30ca420 R08: ffffffff814b2a4c R09: ffffed103edc9608 R10: ffffed103edc9608 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000000 R15: ffff8881e67b0990 FS: 0000555556b51300(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556b5a628 CR3: 00000001e330b000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: d_walk+0x2d9/0x540 fs/dcache.c:1307 do_one_tree fs/dcache.c:1604 [inline] shrink_dcache_for_umount+0x8a/0x1a0 fs/dcache.c:1620 generic_shutdown_super+0x63/0x2a0 fs/super.c:447 kill_block_super+0x79/0xd0 fs/super.c:1444 deactivate_locked_super+0xaf/0x100 fs/super.c:335 deactivate_super+0x168/0x210 fs/super.c:366 cleanup_mnt+0x432/0x4e0 fs/namespace.c:1102 task_work_run+0x186/0x1b0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop arch/x86/entry/common.c:163 [inline] prepare_exit_to_usermode+0x2b0/0x310 arch/x86/entry/common.c:194 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f77262800d7 Code: ff d0 48 89 c7 b8 3c 00 00 00 0f 05 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd7935b168 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 000000000002c102 RCX: 00007f77262800d7 RDX: 00007ffd7935b22a RSI: 0000000000000002 RDI: 00007ffd7935b220