------------[ cut here ]------------ kernfs: can not remove 'nr_tags', no directory WARNING: CPU: 0 PID: 6023 at fs/kernfs/dir.c:1656 kernfs_remove_by_name_ns+0x10c/0x188 Modules linked in: CPU: 0 PID: 6023 Comm: syz.3.335 Not tainted 6.1.129-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 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:1655 sp : ffff800021be7750 x29: ffff800021be7750 x28: 0000000000000008 x27: 1fffe00019cfb731 x26: 0000000000000002 x25: ffff80001630d448 x24: 1ffff0000252bbb8 x23: dfff800000000000 x22: 0000000000000000 x21: 0000000000000000 x20: 00000000fffffffe x19: ffff80001295ddc0 x18: 1fffe00036798976 x17: 0000000000000000 x16: ffff80001232163c x15: 0000000000000002 x14: 00000000ffffffff x13: 0000000000000001 x12: 0000000000080000 x11: 000000000003a797 x10: ffff800028979000 x9 : 548ef63bd2903b00 x8 : 548ef63bd2903b00 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff800021be7038 x4 : ffff800015bd5320 x3 : ffff800008587574 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:4753 [inline] blk_mq_update_nr_hw_queues+0x524/0xf50 block/blk-mq.c:4799 nbd_start_device+0x150/0xae0 drivers/block/nbd.c:1375 nbd_start_device_ioctl drivers/block/nbd.c:1426 [inline] __nbd_ioctl drivers/block/nbd.c:1502 [inline] nbd_ioctl+0x430/0xc40 drivers/block/nbd.c:1542 blkdev_ioctl+0x408/0xb40 block/ioctl.c:620 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+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 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: 6804 hardirqs last enabled at (6803): [] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:261 hardirqs last disabled at (6804): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (4938): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (4936): [] 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: 0 PID: 6023 at fs/kernfs/dir.c:1656 kernfs_remove_by_name_ns+0x10c/0x188 Modules linked in: CPU: 0 PID: 6023 Comm: syz.3.335 Tainted: G W 6.1.129-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 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:1655 sp : ffff800021be7750 x29: ffff800021be7750 x28: 0000000000000008 x27: 1fffe00019cfb731 x26: 0000000000000002 x25: ffff80001630d450 x24: 1ffff0000252bbb8 x23: dfff800000000000 x22: 0000000000000000 x21: 0000000000000000 x20: 00000000fffffffe x19: ffff80001295ddc0 x18: 1fffe00036798976 x17: ffff800015aed000 x16: ffff80000830270c x15: ffff0001b3cc4bbc x14: 1ffff00002b5e0b2 x13: dfff800000000000 x12: 0000000000000001 x11: 1fffe00019ba8850 x10: 0000000000000000 x9 : 548ef63bd2903b00 x8 : 548ef63bd2903b00 x7 : ffff800008279314 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : ffff800008267080 x2 : 0000000000000001 x1 : 0000000000000004 x0 : 0000000000000001 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:4753 [inline] blk_mq_update_nr_hw_queues+0x524/0xf50 block/blk-mq.c:4799 nbd_start_device+0x150/0xae0 drivers/block/nbd.c:1375 nbd_start_device_ioctl drivers/block/nbd.c:1426 [inline] __nbd_ioctl drivers/block/nbd.c:1502 [inline] nbd_ioctl+0x430/0xc40 drivers/block/nbd.c:1542 blkdev_ioctl+0x408/0xb40 block/ioctl.c:620 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+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 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: 6886 hardirqs last enabled at (6885): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1367 [inline] hardirqs last enabled at (6885): [] finish_lock_switch+0xbc/0x1e8 kernel/sched/core.c:5002 hardirqs last disabled at (6886): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (6856): [] softirq_handle_end kernel/softirq.c:421 [inline] softirqs last enabled at (6856): [] handle_softirqs+0xb84/0xd58 kernel/softirq.c:606 softirqs last disabled at (6807): [] __do_softirq+0x14/0x20 kernel/softirq.c:612 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ kernfs: can not remove 'cpu_list', no directory WARNING: CPU: 0 PID: 6023 at fs/kernfs/dir.c:1656 kernfs_remove_by_name_ns+0x10c/0x188 Modules linked in: CPU: 0 PID: 6023 Comm: syz.3.335 Tainted: G W 6.1.129-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 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:1655 sp : ffff800021be7750 x29: ffff800021be7750 x28: 0000000000000008 x27: 1fffe00019cfb731 x26: 0000000000000002 x25: ffff80001630d458 x24: 1ffff0000252bbb8 x23: dfff800000000000 x22: 0000000000000000 x21: 0000000000000000 x20: 00000000fffffffe x19: ffff80001295ddc0 x18: 1fffe00036798976 x17: ffff800015aed000 x16: ffff80000830270c x15: ffff0001b3cc4bbc x14: 1ffff00002b5e0b2 x13: dfff800000000000 x12: 0000000000000003 x11: 0000000000ff0100 x10: 0000000000000003 x9 : 548ef63bd2903b00 x8 : 548ef63bd2903b00 x7 : ffff800008279314 x6 : 0000000000000000 x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000006 x1 : ffff80001247d5c0 x0 : ffff80019e280000 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:4753 [inline] blk_mq_update_nr_hw_queues+0x524/0xf50 block/blk-mq.c:4799 nbd_start_device+0x150/0xae0 drivers/block/nbd.c:1375 nbd_start_device_ioctl drivers/block/nbd.c:1426 [inline] __nbd_ioctl drivers/block/nbd.c:1502 [inline] nbd_ioctl+0x430/0xc40 drivers/block/nbd.c:1542 blkdev_ioctl+0x408/0xb40 block/ioctl.c:620 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+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 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: 6992 hardirqs last enabled at (6991): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1367 [inline] hardirqs last enabled at (6991): [] finish_lock_switch+0xbc/0x1e8 kernel/sched/core.c:5002 hardirqs last disabled at (6992): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (6962): [] softirq_handle_end kernel/softirq.c:421 [inline] softirqs last enabled at (6962): [] handle_softirqs+0xb84/0xd58 kernel/softirq.c:606 softirqs last disabled at (6889): [] __do_softirq+0x14/0x20 kernel/softirq.c:612 ---[ end trace 0000000000000000 ]---