BUG: Dentry ffff888119d7fcc0{i=0,n=.index} still in use (1) [unmount of vfat loop0] ------------[ cut here ]------------ WARNING: CPU: 0 PID: 365 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 fs/dcache.c:1607 Modules linked in: CPU: 0 PID: 365 Comm: syz-executor003 Not tainted 5.10.75-syzkaller-01082-g234d53d2bb60 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:umount_check+0x18d/0x1d0 fs/dcache.c:1607 Code: 8b 0b 49 81 c6 f8 03 00 00 48 c7 c7 40 43 2e 85 4c 89 e6 48 8b 55 d0 4c 89 e1 45 89 f8 31 c0 41 56 e8 ae 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:ffffc90000bf7c78 EFLAGS: 00010286 RAX: 0000000000000054 RBX: ffffffff866b3380 RCX: 40c1636306cab800 RDX: 0000000000000000 RSI: 0000000080000002 RDI: 0000000000000000 RBP: ffffc90000bf7ca8 R08: ffffffff81545368 R09: fffff5200017eeb9 R10: fffff5200017eeb9 R11: 0000000000000000 R12: ffff888119d7fcc0 R13: dffffc0000000000 R14: ffff8881061e33f8 R15: 0000000000000001 FS: 00005555574af300(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555574b8628 CR3: 000000011c8fe000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: d_walk+0x309/0x540 fs/dcache.c:1326 do_one_tree fs/dcache.c:1623 [inline] shrink_dcache_for_umount+0x8e/0x1b0 fs/dcache.c:1639 generic_shutdown_super+0x66/0x2c0 fs/super.c:447 kill_block_super+0x80/0xe0 fs/super.c:1446 deactivate_locked_super+0xb0/0x100 fs/super.c:335 deactivate_super+0xa5/0xd0 fs/super.c:366 cleanup_mnt+0x45f/0x510 fs/namespace.c:1118 __cleanup_mnt+0x19/0x20 fs/namespace.c:1125 task_work_run+0x147/0x1b0 kernel/task_work.c:154 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_user_mode_loop kernel/entry/common.c:164 [inline] exit_to_user_mode_prepare+0xc3/0xe0 kernel/entry/common.c:191 syscall_exit_to_user_mode+0x24/0x40 kernel/entry/common.c:266 do_syscall_64+0x3d/0x70 arch/x86/entry/common.c:56 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7fe663393377 Code: 07 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd0df4ab08 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 000000000002a7df RCX: 00007fe663393377 RDX: 00007ffd0df4abc9 RSI: 0000000000000002 RDI: 00007ffd0df4abc0 RBP: 00007ffd0df4abc0 R08: 00000000ffffffff R09: 00007ffd0df4a9a0 R10: 00005555574b0633 R11: 0000000000000202 R12: 00007ffd0df4bc40 R13: 00005555574b05f0 R14: 00007ffd0df4ab30 R15: 0000000000000004 ---[ end trace e3e057aa0f2d9c35 ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... BUG: Dentry ffff888119de9bb0{i=0,n=.index} still in use (1) [unmount of vfat loop0] ------------[ cut here ]------------ WARNING: CPU: 0 PID: 365 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 fs/dcache.c:1607 Modules linked in: CPU: 0 PID: 365 Comm: syz-executor003 Tainted: G W 5.10.75-syzkaller-01082-g234d53d2bb60 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:umount_check+0x18d/0x1d0 fs/dcache.c:1607 Code: 8b 0b 49 81 c6 f8 03 00 00 48 c7 c7 40 43 2e 85 4c 89 e6 48 8b 55 d0 4c 89 e1 45 89 f8 31 c0 41 56 e8 ae 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:ffffc90000bf7c78 EFLAGS: 00010286 RAX: 0000000000000054 RBX: ffffffff866b3380 RCX: 40c1636306cab800 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffffc90000bf7ca8 R08: ffffffff81545368 R09: ffffed103ee095d8 R10: ffffed103ee095d8 R11: 0000000000000000 R12: ffff888119de9bb0 R13: dffffc0000000000 R14: ffff8881061e03f8 R15: 0000000000000001 FS: 00005555574af300(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555574b8628 CR3: 000000011c8fe000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: d_walk+0x309/0x540 fs/dcache.c:1326 do_one_tree fs/dcache.c:1623 [inline] shrink_dcache_for_umount+0x8e/0x1b0 fs/dcache.c:1639 generic_shutdown_super+0x66/0x2c0 fs/super.c:447 kill_block_super+0x80/0xe0 fs/super.c:1446 deactivate_locked_super+0xb0/0x100 fs/super.c:335 deactivate_super+0xa5/0xd0 fs/super.c:366 cleanup_mnt+0x45f/0x510 fs/namespace.c:1118 __cleanup_mnt+0x19/0x20 fs/namespace.c:1125 task_work_run+0x147/0x1b0 kernel/task_work.c:154 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_user_mode_loop kernel/entry/common.c:164 [inline] exit_to_user_mode_prepare+0xc3/0xe0 kernel/entry/common.c:191 syscall_exit_to_user_mode+0x24/0x40 kernel/entry/common.c:266 do_syscall_64+0x3d/0x70 arch/x86/entry/common.c:56 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7fe663393377 Code: 07 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd0df4ab08 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 000000000002aaa0 RCX: 00007fe663393377 RDX: 00007ffd0df4abc9 RSI: 0000000000000002 RDI: 00007ffd0df4abc0 RBP: 00007ffd0df4abc0 R08: 00000000ffffffff R09: 00007ffd0df4a9a0 R10: 00005555574b0633 R11: 0000000000000202 R12: 00007ffd0df4bc40 R13: 00005555574b05f0 R14: 00007ffd0df4ab30 R15: 0000000000000005 ---[ end trace e3e057aa0f2d9c36 ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... BUG: Dentry ffff888119deb660{i=0,n=.index} still in use (1) [unmount of vfat loop0] ------------[ cut here ]------------ WARNING: CPU: 1 PID: 365 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 fs/dcache.c:1607 Modules linked in: CPU: 1 PID: 365 Comm: syz-executor003 Tainted: G W 5.10.75-syzkaller-01082-g234d53d2bb60 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:umount_check+0x18d/0x1d0 fs/dcache.c:1607 Code: 8b 0b 49 81 c6 f8 03 00 00 48 c7 c7 40 43 2e 85 4c 89 e6 48 8b 55 d0 4c 89 e1 45 89 f8 31 c0 41 56 e8 ae 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:ffffc90000bf7c78 EFLAGS: 00010286 RAX: 0000000000000054 RBX: ffffffff866b3380 RCX: 40c1636306cab800 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffffc90000bf7ca8 R08: ffffffff81545368 R09: ffffed103ee295d8 R10: ffffed103ee295d8 R11: 0000000000000000 R12: ffff888119deb660 R13: dffffc0000000000 R14: ffff8881061e23f8 R15: 0000000000000001 FS: 00005555574af300(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555574b8628 CR3: 000000011c8fe000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: d_walk+0x309/0x540 fs/dcache.c:1326 do_one_tree fs/dcache.c:1623 [inline] shrink_dcache_for_umount+0x8e/0x1b0 fs/dcache.c:1639 generic_shutdown_super+0x66/0x2c0 fs/super.c:447 kill_block_super+0x80/0xe0 fs/super.c:1446 deactivate_locked_super+0xb0/0x100 fs/super.c:335 deactivate_super+0xa5/0xd0 fs/super.c:366 cleanup_mnt+0x45f/0x510 fs/namespace.c:1118 __cleanup_mnt+0x19/0x20 fs/namespace.c:1125 task_work_run+0x147/0x1b0 kernel/task_work.c:154 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_user_mode_loop kernel/entry/common.c:164 [inline] exit_to_user_mode_prepare+0xc3/0xe0 kernel/entry/common.c:191 syscall_exit_to_user_mode+0x24/0x40 kernel/entry/common.c:266 do_syscall_64+0x3d/0x70 arch/x86/entry/common.c:56 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7fe663393377 Code: 07 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd0df4ab08 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 000000000002af37 RCX: 00007fe663393377 RDX: 00007ffd0df4abc9 RSI: 0000000000000002 RDI: 00007ffd0df4abc0 RBP: 00007ffd0df4abc0 R08: 00000000ffffffff R09: 00007ffd0df4a9a0 R10: 00005555574b0633 R11: 0000000000000202 R12: 00007ffd0df4bc40 R13: 00005555574b05f0 R14: 00007ffd0df4ab30 R15: 0000000000000007 ---[ end trace e3e057aa0f2d9c37 ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... BUG: Dentry ffff888119dc7ee0{i=0,n=.index} still in use (1) [unmount of vfat loop0] ------------[ cut here ]------------ WARNING: CPU: 1 PID: 365 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 fs/dcache.c:1607 Modules linked in: CPU: 1 PID: 365 Comm: syz-executor003 Tainted: G W 5.10.75-syzkaller-01082-g234d53d2bb60 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:umount_check+0x18d/0x1d0 fs/dcache.c:1607 Code: 8b 0b 49 81 c6 f8 03 00 00 48 c7 c7 40 43 2e 85 4c 89 e6 48 8b 55 d0 4c 89 e1 45 89 f8 31 c0 41 56 e8 ae 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:ffffc90000bf7c78 EFLAGS: 00010286 RAX: 0000000000000054 RBX: ffffffff866b3380 RCX: 40c1636306cab800 RDX: 0000000000000000 RSI: 0000000080000002 RDI: 0000000000000000 RBP: ffffc90000bf7ca8 R08: ffffffff81545368 R09: ffffed103ee295d8 R10: ffffed103ee295d8 R11: 0000000000000000 R12: ffff888119dc7ee0 R13: dffffc0000000000 R14: ffff8881057a83f8 R15: 0000000000000001 FS: 00005555574af300(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555574b8628 CR3: 000000011c8fe000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: d_walk+0x309/0x540 fs/dcache.c:1326 do_one_tree fs/dcache.c:1623 [inline] shrink_dcache_for_umount+0x8e/0x1b0 fs/dcache.c:1639 generic_shutdown_super+0x66/0x2c0 fs/super.c:447 kill_block_super+0x80/0xe0 fs/super.c:1446 deactivate_locked_super+0xb0/0x100 fs/super.c:335 deactivate_super+0xa5/0xd0 fs/super.c:366 cleanup_mnt+0x45f/0x510 fs/namespace.c:1118 __cleanup_mnt+0x19/0x20 fs/namespace.c:1125 task_work_run+0x147/0x1b0 kernel/task_work.c:154 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_user_mode_loop kernel/entry/common.c:164 [inline] exit_to_user_mode_prepare+0xc3/0xe0 kernel/entry/common.c:191 syscall_exit_to_user_mode+0x24/0x40 kernel/entry/common.c:266 do_syscall_64+0x3d/0x70 arch/x86/entry/common.c:56 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7fe663393377 Code: 07 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd0df4ab08 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 000000000002b77f RCX: 00007fe663393377 RDX: 00007ffd0df4abca RSI: 0000000000000002 RDI: 00007ffd0df4abc0 RBP: 00007ffd0df4abc0 R08: 00000000ffffffff R09: 00007ffd0df4a9a0 R10: 00005555574b0633 R11: 0000000000000202 R12: 00007ffd0df4bc40 R13: 00005555574b05f0 R14: 00007ffd0df4ab30 R15: 000000000000000b ---[ end trace e3e057aa0f2d9c38 ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... BUG: Dentry ffff888119dd6ee0{i=0,n=.index} still in use (1) [unmount of vfat loop0] ------------[ cut here ]------------ WARNING: CPU: 1 PID: 365 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 fs/dcache.c:1607 Modules linked in: CPU: 1 PID: 365 Comm: syz-executor003 Tainted: G W 5.10.75-syzkaller-01082-g234d53d2bb60 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:umount_check+0x18d/0x1d0 fs/dcache.c:1607 Code: 8b 0b 49 81 c6 f8 03 00 00 48 c7 c7 40 43 2e 85 4c 89 e6 48 8b 55 d0 4c 89 e1 45 89 f8 31 c0 41 56 e8 ae 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:ffffc90000bf7c78 EFLAGS: 00010286 RAX: 0000000000000054 RBX: ffffffff866b3380 RCX: 40c1636306cab800 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffffc90000bf7ca8 R08: ffffffff81545368 R09: ffffed103ee295d8 R10: ffffed103ee295d8 R11: 0000000000000000 R12: ffff888119dd6ee0 R13: dffffc0000000000 R14: ffff88810a7a83f8 R15: 0000000000000001 FS: 00005555574af300(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555574b8628 CR3: 000000011c8fe000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: d_walk+0x309/0x540 fs/dcache.c:1326 do_one_tree fs/dcache.c:1623 [inline] shrink_dcache_for_umount+0x8e/0x1b0 fs/dcache.c:1639 generic_shutdown_super+0x66/0x2c0 fs/super.c:447 kill_block_super+0x80/0xe0 fs/super.c:1446 deactivate_locked_super+0xb0/0x100 fs/super.c:335 deactivate_super+0xa5/0xd0 fs/super.c:366 cleanup_mnt+0x45f/0x510 fs/namespace.c:1118 __cleanup_mnt+0x19/0x20 fs/namespace.c:1125 task_work_run+0x147/0x1b0 kernel/task_work.c:154 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_user_mode_loop kernel/entry/common.c:164 [inline] exit_to_user_mode_prepare+0xc3/0xe0 kernel/entry/common.c:191 syscall_exit_to_user_mode+0x24/0x40 kernel/entry/common.c:266 do_syscall_64+0x3d/0x70 arch/x86/entry/common.c:56 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7fe663393377 Code: 07 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd0df4ab08 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 000000000002c107 RCX: 00007fe663393377 RDX: 00007ffd0df4abca RSI: 0000000000000002 RDI: 00007ffd0df4abc0 RBP: 00007ffd0df4abc0 R08: 00000000ffffffff R09: 00007ffd0df4a9a0 R10: 00005555574b0633 R11: 0000000000000202 R12: 00007ffd0df4bc40 R13: 00005555574b05f0 R14: 00007ffd0df4ab30 R15: 0000000000000010 ---[ end trace e3e057aa0f2d9c39 ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... BUG: Dentry ffff888119dd6110{i=0,n=.index} still in use (1) [unmount of vfat loop0] ------------[ cut here ]------------ WARNING: CPU: 0 PID: 365 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 fs/dcache.c:1607 Modules linked in: CPU: 0 PID: 365 Comm: syz-executor003 Tainted: G W 5.10.75-syzkaller-01082-g234d53d2bb60 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:umount_check+0x18d/0x1d0 fs/dcache.c:1607 Code: 8b 0b 49 81 c6 f8 03 00 00 48 c7 c7 40 43 2e 85 4c 89 e6 48 8b 55 d0 4c 89 e1 45 89 f8 31 c0 41 56 e8 ae 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:ffffc90000bf7c78 EFLAGS: 00010286 RAX: 0000000000000054 RBX: ffffffff866b3380 RCX: 40c1636306cab800 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffffc90000bf7ca8 R08: ffffffff81545368 R09: ffffed103ee095d8 R10: ffffed103ee095d8 R11: 0000000000000000 R12: ffff888119dd6110 R13: dffffc0000000000 R14: ffff88810a7ae3f8 R15: 0000000000000001 FS: 00005555574af300(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555574b8628 CR3: 000000011c8fe000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: d_walk+0x309/0x540 fs/dcache.c:1326 do_one_tree fs/dcache.c:1623 [inline] shrink_dcache_for_umount+0x8e/0x1b0 fs/dcache.c:1639 generic_shutdown_super+0x66/0x2c0 fs/super.c:447 kill_block_super+0x80/0xe0 fs/super.c:1446 deactivate_locked_super+0xb0/0x100 fs/super.c:335 deactivate_super+0xa5/0xd0 fs/super.c:366 cleanup_mnt+0x45f/0x510 fs/namespace.c:1118 __cleanup_mnt+0x19/0x20 fs/namespace.c:1125 task_work_run+0x147/0x1b0 kernel/task_work.c:154 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_user_mode_loop kernel/entry/common.c:164 [inline] exit_to_user_mode_prepare+0xc3/0xe0 kernel/entry/common.c:191 syscall_exit_to_user_mode+0x24/0x40 kernel/entry/common.c:266 do_syscall_64+0x3d/0x70 arch/x86/entry/common.c:56 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7fe663393377 Code: 07 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd0df4ab08 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 000000000002c408 RCX: 00007fe663393377 RDX: 00007ffd0df4abca RSI: 0000000000000002 RDI: 00007ffd0df4abc0 RBP: 00007ffd0df4abc0 R08: 00000000ffffffff R09: 00007ffd0df4a9a0 R10: 00005555574b0633 R11: 0000000000000202 R12: 00007ffd0df4bc40 R13: 00005555574b05f0 R14: 00007ffd0df4ab30 R15: 0000000000000011 ---[ end trace e3e057aa0f2d9c3a ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... BUG: Dentry ffff888119e04dd0{i=0,n=.index} still in use (1) [unmount of vfat loop0] ------------[ cut here ]------------ WARNING: CPU: 0 PID: 365 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 fs/dcache.c:1607 Modules linked in: CPU: 0 PID: 365 Comm: syz-executor003 Tainted: G W 5.10.75-syzkaller-01082-g234d53d2bb60 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:umount_check+0x18d/0x1d0 fs/dcache.c:1607 Code: 8b 0b 49 81 c6 f8 03 00 00 48 c7 c7 40 43 2e 85 4c 89 e6 48 8b 55 d0 4c 89 e1 45 89 f8 31 c0 41 56 e8 ae 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:ffffc90000bf7c78 EFLAGS: 00010286 RAX: 0000000000000054 RBX: ffffffff866b3380 RCX: 40c1636306cab800 RDX: 0000000000000000 RSI: 0000000080000002 RDI: 0000000000000000 RBP: ffffc90000bf7ca8 R08: ffffffff81545368 R09: ffffed103ee095d8 R10: ffffed103ee095d8 R11: 0000000000000000 R12: ffff888119e04dd0 R13: dffffc0000000000 R14: ffff88810bac63f8 R15: 0000000000000001 FS: 00005555574af300(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555574b8628 CR3: 000000011c8fe000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: d_walk+0x309/0x540 fs/dcache.c:1326 do_one_tree fs/dcache.c:1623 [inline] shrink_dcache_for_umount+0x8e/0x1b0 fs/dcache.c:1639 generic_shutdown_super+0x66/0x2c0 fs/super.c:447 kill_block_super+0x80/0xe0 fs/super.c:1446 deactivate_locked_super+0xb0/0x100 fs/super.c:335 deactivate_super+0xa5/0xd0 fs/super.c:366 cleanup_mnt+0x45f/0x510 fs/namespace.c:1118 __cleanup_mnt+0x19/0x20 fs/namespace.c:1125 task_work_run+0x147/0x1b0 kernel/task_work.c:154 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_user_mode_loop kernel/entry/common.c:164 [inline] exit_to_user_mode_prepare+0xc3/0xe0 kernel/entry/common.c:191 syscall_exit_to_user_mode+0x24/0x40 kernel/entry/common.c:266 do_syscall_64+0x3d/0x70 arch/x86/entry/common.c:56 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7fe663393377 Code: 07 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd0df4ab08 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 000000000002c720 RCX: 00007fe663393377 RDX: 00007ffd0df4abca RSI: 0000000000000002 RDI: 00007ffd0df4abc0 RBP: 00007ffd0df4abc0 R08: 00000000ffffffff R09: 00007ffd0df4a9a0 R10: 00005555574b0633 R11: 0000000000000202 R12: 00007ffd0df4bc40 R13: 00005555574b05f0 R14: 00007ffd0df4ab30 R15: 0000000000000012 ---[ end trace e3e057aa0f2d9c3b ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day... BUG: Dentry ffff88810b414110{i=0,n=.index} still in use (1) [unmount of vfat loop0] ------------[ cut here ]------------ WARNING: CPU: 0 PID: 365 at fs/dcache.c:1616 umount_check+0x18d/0x1d0 fs/dcache.c:1607 Modules linked in: CPU: 0 PID: 365 Comm: syz-executor003 Tainted: G W 5.10.75-syzkaller-01082-g234d53d2bb60 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:umount_check+0x18d/0x1d0 fs/dcache.c:1607 Code: 8b 0b 49 81 c6 f8 03 00 00 48 c7 c7 40 43 2e 85 4c 89 e6 48 8b 55 d0 4c 89 e1 45 89 f8 31 c0 41 56 e8 ae 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:ffffc90000bf7c78 EFLAGS: 00010286 RAX: 0000000000000054 RBX: ffffffff866b3380 RCX: 40c1636306cab800 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000000 RBP: ffffc90000bf7ca8 R08: ffffffff81545368 R09: ffffed103ee095d8 R10: ffffed103ee095d8 R11: 0000000000000000 R12: ffff88810b414110 R13: dffffc0000000000 R14: ffff88810a7a93f8 R15: 0000000000000001 FS: 00005555574af300(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555574b8628 CR3: 000000011c8fe000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: d_walk+0x309/0x540 fs/dcache.c:1326 do_one_tree fs/dcache.c:1623 [inline] shrink_dcache_for_umount+0x8e/0x1b0 fs/dcache.c:1639 generic_shutdown_super+0x66/0x2c0 fs/super.c:447 kill_block_super+0x80/0xe0 fs/super.c:1446 deactivate_locked_super+0xb0/0x100 fs/super.c:335 deactivate_super+0xa5/0xd0 fs/super.c:366 cleanup_mnt+0x45f/0x510 fs/namespace.c:1118 __cleanup_mnt+0x19/0x20 fs/namespace.c:1125 task_work_run+0x147/0x1b0 kernel/task_work.c:154 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_user_mode_loop kernel/entry/common.c:164 [inline] exit_to_user_mode_prepare+0xc3/0xe0 kernel/entry/common.c:191 syscall_exit_to_user_mode+0x24/0x40 kernel/entry/common.c:266 do_syscall_64+0x3d/0x70 arch/x86/entry/common.c:56 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7fe663393377 Code: 07 00 48 83 c4 08 5b 5d c3 66 2e 0f 1f 84 00 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd0df4ab08 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 000000000002cbf7 RCX: 00007fe663393377 RDX: 00007ffd0df4abca RSI: 0000000000000002 RDI: 00007ffd0df4abc0 RBP: 00007ffd0df4abc0 R08: 00000000ffffffff R09: 00007ffd0df4a9a0 R10: 00005555574b0633 R11: 0000000000000202 R12: 00007ffd0df4bc40 R13: 00005555574b05f0 R14: 00007ffd0df4ab30 R15: 0000000000000014 ---[ end trace e3e057aa0f2d9c3c ]--- VFS: Busy inodes after unmount of loop0. Self-destruct in 5 seconds. Have a nice day...