------------[ cut here ]------------ BUG: Dentry 000000003c7314a5{i=0,n=.reiserfs_priv} still in use (1) [unmount of squashfs loop0] WARNING: CPU: 1 PID: 28303 at fs/dcache.c:1675 umount_check+0x168/0x1bc fs/dcache.c:1667 Modules linked in: CPU: 1 PID: 28303 Comm: syz-executor184 Not tainted 6.6.0-rc7-syzkaller-00089-g8de1e7afcc1c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : umount_check+0x168/0x1bc fs/dcache.c:1667 lr : umount_check+0x168/0x1bc fs/dcache.c:1667 sp : ffff8000971c7750 x29: ffff8000971c7750 x28: ffff0000e79e4fc8 x27: ffff0000e79e4fc8 x26: ffff0000e79e4eb0 x25: ffff0000e79e4fc8 x24: ffff0000d93a2000 x23: dfff800000000000 x22: ffff80008e6e6880 x21: 0000000000000001 x20: 0000000000000000 x19: ffff0000e79e5608 x18: ffff8000971c6c40 x17: 657375206e69206c x16: ffff80008a71b23c x15: 0000000000000001 x14: 1fffe00036833432 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000002 x10: 0000000000000000 x9 : 7c06b4fd80536a00 x8 : 7c06b4fd80536a00 x7 : 0000000000013fa0 x6 : 0000000000013f68 x5 : ffff8000971c7038 x4 : ffff80008e412cd0 x3 : ffff8000805a359c x2 : 0000000000000001 x1 : 0000000000000002 x0 : 0000000000000000 Call trace: umount_check+0x168/0x1bc fs/dcache.c:1667 d_walk+0x1b4/0x64c fs/dcache.c:1386 do_one_tree+0x44/0xfc fs/dcache.c:1682 shrink_dcache_for_umount+0x80/0x12c fs/dcache.c:1698 generic_shutdown_super+0x68/0x2b8 fs/super.c:665 kill_block_super+0x40/0x74 fs/super.c:1646 deactivate_locked_super+0xac/0x12c fs/super.c:481 deactivate_super+0xe0/0x100 fs/super.c:514 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1254 __cleanup_mnt+0x20/0x30 fs/namespace.c:1261 task_work_run+0x230/0x2e0 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x214c/0x393c arch/arm64/kernel/signal.c:1305 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:144 [inline] el0_svc+0x9c/0x158 arch/arm64/kernel/entry-common.c:679 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 irq event stamp: 2729050 hardirqs last enabled at (2729049): [] __up_console_sem kernel/printk/printk.c:347 [inline] hardirqs last enabled at (2729049): [] __console_unlock kernel/printk/printk.c:2718 [inline] hardirqs last enabled at (2729049): [] console_unlock+0x17c/0x3d4 kernel/printk/printk.c:3037 hardirqs last disabled at (2729050): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:436 softirqs last enabled at (2728648): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (2728646): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ BUG: Dentry 000000003c7314a5{i=0,n=.reiserfs_priv} still in use (1) [unmount of squashfs loop0] WARNING: CPU: 1 PID: 28303 at fs/dcache.c:1675 umount_check+0x168/0x1bc fs/dcache.c:1667 Modules linked in: CPU: 1 PID: 28303 Comm: syz-executor184 Tainted: G W 6.6.0-rc7-syzkaller-00089-g8de1e7afcc1c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : umount_check+0x168/0x1bc fs/dcache.c:1667 lr : umount_check+0x168/0x1bc fs/dcache.c:1667 sp : ffff8000971c7750 x29: ffff8000971c7750 x28: ffff0000e79e4fc8 x27: ffff0000e79e4fc8 x26: ffff0000e79e4eb0 x25: ffff0000e79e4fc8 x24: ffff0000d93a2000 x23: dfff800000000000 x22: ffff80008e6e6880 x21: 0000000000000001 x20: 0000000000000000 x19: ffff0000e79e5608 x18: ffff8000971c6c40 x17: 657375206e69206c x16: ffff80008a71b23c x15: 0000000000000001 x14: 1ffff00012e38e3c x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000003 x10: 0000000000000000 x9 : 7c06b4fd80536a00 x8 : 7c06b4fd80536a00 x7 : 00000000000148d0 x6 : 0000000000014898 x5 : ffff8000971c7038 x4 : ffff80008e4130c0 x3 : ffff800082b180c4 x2 : 0000000000000001 x1 : 0000000100000003 x0 : 0000000000000000 Call trace: umount_check+0x168/0x1bc fs/dcache.c:1667 d_walk+0x1b4/0x64c fs/dcache.c:1386 do_one_tree+0x44/0xfc fs/dcache.c:1682 shrink_dcache_for_umount+0x80/0x12c fs/dcache.c:1698 generic_shutdown_super+0x68/0x2b8 fs/super.c:665 kill_block_super+0x40/0x74 fs/super.c:1646 deactivate_locked_super+0xac/0x12c fs/super.c:481 deactivate_super+0xe0/0x100 fs/super.c:514 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1254 __cleanup_mnt+0x20/0x30 fs/namespace.c:1261 task_work_run+0x230/0x2e0 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x214c/0x393c arch/arm64/kernel/signal.c:1305 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:144 [inline] el0_svc+0x9c/0x158 arch/arm64/kernel/entry-common.c:679 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 irq event stamp: 2729184 hardirqs last enabled at (2729183): [] __up_console_sem kernel/printk/printk.c:347 [inline] hardirqs last enabled at (2729183): [] __console_unlock kernel/printk/printk.c:2718 [inline] hardirqs last enabled at (2729183): [] console_unlock+0x17c/0x3d4 kernel/printk/printk.c:3037 hardirqs last disabled at (2729184): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:436 softirqs last enabled at (2729156): [] softirq_handle_end kernel/softirq.c:399 [inline] softirqs last enabled at (2729156): [] __do_softirq+0xac0/0xd54 kernel/softirq.c:582 softirqs last disabled at (2729053): [] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80 ---[ end trace 0000000000000000 ]--- VFS: Busy inodes after unmount of loop0 (squashfs) ------------[ cut here ]------------ kernel BUG at fs/super.c:697! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 28303 Comm: syz-executor184 Tainted: G W 6.6.0-rc7-syzkaller-00089-g8de1e7afcc1c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : generic_shutdown_super+0x2b4/0x2b8 fs/super.c:695 lr : generic_shutdown_super+0x2b4/0x2b8 fs/super.c:695 sp : ffff8000971c78a0 x29: ffff8000971c78a0 x28: 1fffe0001a7ce98a x27: 0000000000000008 x26: 0000000000000003 x25: dfff800000000000 x24: 1fffe0001b2744f1 x23: ffff80008a9c0c80 x22: dfff800000000000 x21: 0000000000000000 x20: ffff80008e6e6880 x19: ffff0000d93a2658 x18: ffff8000971c70c0 x17: ffff80008e33d000 x16: ffff80008a668900 x15: 0000000000000001 x14: 1ffff00012e38e34 x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000000 x10: 0000000000000000 x9 : 7c06b4fd80536a00 x8 : 7c06b4fd80536a00 x7 : 00000000000151c8 x6 : 0000000000015190 x5 : ffff8000971c71b8 x4 : ffff80008e413498 x3 : ffff8000803639bc x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000032 Call trace: generic_shutdown_super+0x2b4/0x2b8 fs/super.c:695 kill_block_super+0x40/0x74 fs/super.c:1646 deactivate_locked_super+0xac/0x12c fs/super.c:481 deactivate_super+0xe0/0x100 fs/super.c:514 cleanup_mnt+0x34c/0x3dc fs/namespace.c:1254 __cleanup_mnt+0x20/0x30 fs/namespace.c:1261 task_work_run+0x230/0x2e0 kernel/task_work.c:180 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] do_notify_resume+0x214c/0x393c arch/arm64/kernel/signal.c:1305 exit_to_user_mode_prepare arch/arm64/kernel/entry-common.c:137 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:144 [inline] el0_svc+0x9c/0x158 arch/arm64/kernel/entry-common.c:679 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 Code: f004f4e0 91118000 aa1303e1 95d20ee5 (d4210000) ---[ end trace 0000000000000000 ]---