------------[ cut here ]------------ kernfs: can not remove 'nr_tags', no directory WARNING: CPU: 0 PID: 13156 at fs/kernfs/dir.c:1628 kernfs_remove_by_name_ns+0x10c/0x188 Modules linked in: CPU: 0 PID: 13156 Comm: syz-executor.4 Not tainted 6.1.61-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : kernfs_remove_by_name_ns+0x10c/0x188 lr : kernfs_remove_by_name_ns+0x108/0x188 fs/kernfs/dir.c:1627 sp : ffff80002d017750 x29: ffff80002d017750 x28: 0000000000000008 x27: 1fffe00019d48e31 x26: 0000000000000002 x25: ffff800015ff9228 x24: 1ffff000024e91d8 x23: dfff800000000000 x22: 0000000000000000 x21: 0000000000000000 x20: 00000000fffffffe x19: ffff800012748ec0 x18: ffff80002d017020 x17: 0000000000000000 x16: ffff80001213619c x15: 0000000000000000 x14: 0000000000000002 x13: 0000000000000001 x12: 0000000000040000 x11: 000000000002da13 x10: ffff800027a18000 x9 : 96906648e2035800 x8 : 96906648e2035800 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80002d017038 x4 : ffff8000158f29c0 x3 : ffff80000858a904 x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000 Call trace: kernfs_remove_by_name_ns+0x10c/0x188 kernfs_remove_by_name include/linux/kernfs.h:622 [inline] remove_files fs/sysfs/group.c:28 [inline] sysfs_remove_group+0xf8/0x288 fs/sysfs/group.c:288 sysfs_remove_groups+0x5c/0xb4 fs/sysfs/group.c:312 __kobject_del+0x90/0x2d4 lib/kobject.c:587 kobject_del+0x48/0x68 lib/kobject.c:619 blk_mq_unregister_hctx block/blk-mq-sysfs.c:181 [inline] blk_mq_sysfs_unregister_hctxs+0x1c8/0x284 block/blk-mq-sysfs.c:309 __blk_mq_update_nr_hw_queues block/blk-mq.c:4707 [inline] blk_mq_update_nr_hw_queues+0x524/0xf4c block/blk-mq.c:4753 nbd_start_device+0x15c/0xa80 drivers/block/nbd.c:1361 nbd_start_device_ioctl drivers/block/nbd.c:1411 [inline] __nbd_ioctl drivers/block/nbd.c:1487 [inline] nbd_ioctl+0x430/0xc40 drivers/block/nbd.c:1527 blkdev_ioctl+0x408/0xb40 block/ioctl.c:617 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:856 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 irq event stamp: 1538 hardirqs last enabled at (1537): [] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:261 hardirqs last disabled at (1538): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (8): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (6): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ kernfs: can not remove 'nr_reserved_tags', no directory WARNING: CPU: 1 PID: 13156 at fs/kernfs/dir.c:1628 kernfs_remove_by_name_ns+0x10c/0x188 Modules linked in: CPU: 1 PID: 13156 Comm: syz-executor.4 Tainted: G W 6.1.61-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : kernfs_remove_by_name_ns+0x10c/0x188 lr : kernfs_remove_by_name_ns+0x108/0x188 fs/kernfs/dir.c:1627 sp : ffff80002d017750 x29: ffff80002d017750 x28: 0000000000000008 x27: 1fffe00019d48e31 x26: 0000000000000002 x25: ffff800015ff9230 x24: 1ffff000024e91d8 x23: dfff800000000000 x22: 0000000000000000 x21: 0000000000000000 x20: 00000000fffffffe x19: ffff800012748ec0 x18: 1fffe000368b0776 x17: ffff80001580d000 x16: ffff8000083062e0 x15: ffff0001b4583bbc x14: 1ffff00002b020b0 x13: dfff800000000000 x12: 0000000000000003 x11: ff8080000aad6948 x10: 0000000000000003 x9 : 96906648e2035800 x8 : 96906648e2035800 x7 : ffff80000827db78 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000006 x1 : ffff80001228c340 x0 : ffff80019ee22000 Call trace: kernfs_remove_by_name_ns+0x10c/0x188 kernfs_remove_by_name include/linux/kernfs.h:622 [inline] remove_files fs/sysfs/group.c:28 [inline] sysfs_remove_group+0xf8/0x288 fs/sysfs/group.c:288 sysfs_remove_groups+0x5c/0xb4 fs/sysfs/group.c:312 __kobject_del+0x90/0x2d4 lib/kobject.c:587 kobject_del+0x48/0x68 lib/kobject.c:619 blk_mq_unregister_hctx block/blk-mq-sysfs.c:181 [inline] blk_mq_sysfs_unregister_hctxs+0x1c8/0x284 block/blk-mq-sysfs.c:309 __blk_mq_update_nr_hw_queues block/blk-mq.c:4707 [inline] blk_mq_update_nr_hw_queues+0x524/0xf4c block/blk-mq.c:4753 nbd_start_device+0x15c/0xa80 drivers/block/nbd.c:1361 nbd_start_device_ioctl drivers/block/nbd.c:1411 [inline] __nbd_ioctl drivers/block/nbd.c:1487 [inline] nbd_ioctl+0x430/0xc40 drivers/block/nbd.c:1527 blkdev_ioctl+0x408/0xb40 block/ioctl.c:617 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:856 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 irq event stamp: 1766 hardirqs last enabled at (1765): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1366 [inline] hardirqs last enabled at (1765): [] finish_lock_switch+0xbc/0x1e8 kernel/sched/core.c:5000 hardirqs last disabled at (1766): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (1736): [] softirq_handle_end kernel/softirq.c:414 [inline] softirqs last enabled at (1736): [] __do_softirq+0xc14/0xea0 kernel/softirq.c:600 softirqs last disabled at (1541): [] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:79 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ kernfs: can not remove 'cpu_list', no directory WARNING: CPU: 1 PID: 13156 at fs/kernfs/dir.c:1628 kernfs_remove_by_name_ns+0x10c/0x188 Modules linked in: CPU: 1 PID: 13156 Comm: syz-executor.4 Tainted: G W 6.1.61-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : kernfs_remove_by_name_ns+0x10c/0x188 lr : kernfs_remove_by_name_ns+0x108/0x188 fs/kernfs/dir.c:1627 sp : ffff80002d017750 x29: ffff80002d017750 x28: 0000000000000008 x27: 1fffe00019d48e31 x26: 0000000000000002 x25: ffff800015ff9238 x24: 1ffff000024e91d8 x23: dfff800000000000 x22: 0000000000000000 x21: 0000000000000000 x20: 00000000fffffffe x19: ffff800012748ec0 x18: 1fffe000368b0776 x17: 0000000000000000 x16: ffff80001213619c x15: 0000000000000000 x14: 0000000000000002 x13: 0000000000000001 x12: 0000000000040000 x11: 000000000003ffff x10: ffff800027a18000 x9 : 96906648e2035800 x8 : 96906648e2035800 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff80002d017038 x4 : ffff8000158f29c0 x3 : ffff80000858a904 x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000 Call trace: kernfs_remove_by_name_ns+0x10c/0x188 kernfs_remove_by_name include/linux/kernfs.h:622 [inline] remove_files fs/sysfs/group.c:28 [inline] sysfs_remove_group+0xf8/0x288 fs/sysfs/group.c:288 sysfs_remove_groups+0x5c/0xb4 fs/sysfs/group.c:312 __kobject_del+0x90/0x2d4 lib/kobject.c:587 kobject_del+0x48/0x68 lib/kobject.c:619 blk_mq_unregister_hctx block/blk-mq-sysfs.c:181 [inline] blk_mq_sysfs_unregister_hctxs+0x1c8/0x284 block/blk-mq-sysfs.c:309 __blk_mq_update_nr_hw_queues block/blk-mq.c:4707 [inline] blk_mq_update_nr_hw_queues+0x524/0xf4c block/blk-mq.c:4753 nbd_start_device+0x15c/0xa80 drivers/block/nbd.c:1361 nbd_start_device_ioctl drivers/block/nbd.c:1411 [inline] __nbd_ioctl drivers/block/nbd.c:1487 [inline] nbd_ioctl+0x430/0xc40 drivers/block/nbd.c:1527 blkdev_ioctl+0x408/0xb40 block/ioctl.c:617 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:856 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 irq event stamp: 1852 hardirqs last enabled at (1851): [] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:261 hardirqs last disabled at (1852): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (1826): [] softirq_handle_end kernel/softirq.c:414 [inline] softirqs last enabled at (1826): [] __do_softirq+0xc14/0xea0 kernel/softirq.c:600 softirqs last disabled at (1769): [] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:79 ---[ end trace 0000000000000000 ]--- block nbd4: shutting down sockets