======================================================== WARNING: possible irq lock inversion dependency detected 5.0.0-rc4+ #53 Not tainted -------------------------------------------------------- ksoftirqd/0/9 just changed the state of lock: 00000000187d41f7 (&(&ctx->ctx_lock)->rlock){..-.}, at: spin_lock_irq include/linux/spinlock.h:354 [inline] 00000000187d41f7 (&(&ctx->ctx_lock)->rlock){..-.}, at: free_ioctx_users+0xa7/0x6e0 fs/aio.c:610 kobject: 'loop0' (00000000874ce12a): kobject_uevent_env but this lock took another, SOFTIRQ-unsafe lock in the past: (&ctx->fault_pending_wqh){+.+.} and interrupts could create inverse lock ordering between them. other info that might help us debug this: Chain exists of: &(&ctx->ctx_lock)->rlock --> &ctx->fd_wqh --> &ctx->fault_pending_wqh Possible interrupt unsafe locking scenario: CPU0 CPU1 ---- ---- lock(&ctx->fault_pending_wqh); local_irq_disable(); lock(&(&ctx->ctx_lock)->rlock); lock(&ctx->fd_wqh); lock(&(&ctx->ctx_lock)->rlock); *** DEADLOCK *** 2 locks held by ksoftirqd/0/9: #0: 000000004298fbe5 (rcu_callback){....}, at: __rcu_reclaim kernel/rcu/rcu.h:228 [inline] #0: 000000004298fbe5 (rcu_callback){....}, at: rcu_do_batch kernel/rcu/tree.c:2452 [inline] #0: 000000004298fbe5 (rcu_callback){....}, at: invoke_rcu_callbacks kernel/rcu/tree.c:2773 [inline] #0: 000000004298fbe5 (rcu_callback){....}, at: rcu_process_callbacks+0xd39/0x1680 kernel/rcu/tree.c:2754 #1: 000000005254e172 (rcu_read_lock_sched){....}, at: percpu_ref_call_confirm_rcu lib/percpu-refcount.c:119 [inline] #1: 000000005254e172 (rcu_read_lock_sched){....}, at: percpu_ref_switch_to_atomic_rcu+0x268/0x6b0 lib/percpu-refcount.c:158 the shortest dependencies between 2nd lock and 1st lock: -> (&ctx->fault_pending_wqh){+.+.} { HARDIRQ-ON-W at: lock_acquire+0x1db/0x570 kernel/locking/lockdep.c:3841 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] userfaultfd_release+0x609/0x8c0 fs/userfaultfd.c:916 __fput+0x3c5/0xb10 fs/file_table.c:278 ____fput+0x16/0x20 fs/file_table.c:309 task_work_run+0x1f4/0x2b0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x32a/0x3b0 arch/x86/entry/common.c:166 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x696/0x800 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe SOFTIRQ-ON-W at: lock_acquire+0x1db/0x570 kernel/locking/lockdep.c:3841 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] userfaultfd_release+0x609/0x8c0 fs/userfaultfd.c:916 __fput+0x3c5/0xb10 fs/file_table.c:278 ____fput+0x16/0x20 fs/file_table.c:309 task_work_run+0x1f4/0x2b0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x32a/0x3b0 arch/x86/entry/common.c:166 prepare_exit_to_usermode arch/x86/entry/common.c:197 [inline] syscall_return_slowpath arch/x86/entry/common.c:268 [inline] do_syscall_64+0x696/0x800 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe INITIAL USE at: lock_acquire+0x1db/0x570 kernel/locking/lockdep.c:3841 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] userfaultfd_ctx_read+0x690/0x2060 fs/userfaultfd.c:1040 userfaultfd_read+0x1e0/0x2c0 fs/userfaultfd.c:1198 __vfs_read+0x116/0xb20 fs/read_write.c:416 vfs_read+0x194/0x3e0 fs/read_write.c:452 ksys_read+0x105/0x260 fs/read_write.c:578 __do_sys_read fs/read_write.c:588 [inline] __se_sys_read fs/read_write.c:586 [inline] __x64_sys_read+0x73/0xb0 fs/read_write.c:586 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe } ... key at: [] __key.44851+0x0/0x40 ... acquired at: __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] userfaultfd_ctx_read+0x690/0x2060 fs/userfaultfd.c:1040 userfaultfd_read+0x1e0/0x2c0 fs/userfaultfd.c:1198 __vfs_read+0x116/0xb20 fs/read_write.c:416 vfs_read+0x194/0x3e0 fs/read_write.c:452 ksys_read+0x105/0x260 fs/read_write.c:578 __do_sys_read fs/read_write.c:588 [inline] __se_sys_read fs/read_write.c:586 [inline] __x64_sys_read+0x73/0xb0 fs/read_write.c:586 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> (&ctx->fd_wqh){....} { INITIAL USE at: lock_acquire+0x1db/0x570 kernel/locking/lockdep.c:3841 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x95/0xcd kernel/locking/spinlock.c:152 __wake_up_common_lock+0x19b/0x390 kernel/sched/wait.c:120 __wake_up+0xe/0x10 kernel/sched/wait.c:145 userfaultfd_event_wait_completion+0x340/0xc90 fs/userfaultfd.c:618 userfaultfd_remove+0x2ac/0x330 fs/userfaultfd.c:799 madvise_dontneed_free mm/madvise.c:524 [inline] madvise_vma mm/madvise.c:699 [inline] __do_sys_madvise mm/madvise.c:874 [inline] __se_sys_madvise mm/madvise.c:802 [inline] __x64_sys_madvise+0x67c/0x1810 mm/madvise.c:802 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe } ... key at: [] __key.44854+0x0/0x40 ... acquired at: __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2f/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:329 [inline] aio_poll+0x7b9/0x14e0 fs/aio.c:1772 __io_submit_one fs/aio.c:1875 [inline] io_submit_one+0xc39/0x1050 fs/aio.c:1908 __do_sys_io_submit fs/aio.c:1953 [inline] __se_sys_io_submit fs/aio.c:1923 [inline] __x64_sys_io_submit+0x1c4/0x5d0 fs/aio.c:1923 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe -> (&(&ctx->ctx_lock)->rlock){..-.} { IN-SOFTIRQ-W at: lock_acquire+0x1db/0x570 kernel/locking/lockdep.c:3841 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline] _raw_spin_lock_irq+0x60/0x80 kernel/locking/spinlock.c:160 spin_lock_irq include/linux/spinlock.h:354 [inline] free_ioctx_users+0xa7/0x6e0 fs/aio.c:610 percpu_ref_put_many include/linux/percpu-refcount.h:285 [inline] percpu_ref_put include/linux/percpu-refcount.h:301 [inline] percpu_ref_call_confirm_rcu lib/percpu-refcount.c:123 [inline] percpu_ref_switch_to_atomic_rcu+0x50c/0x6b0 lib/percpu-refcount.c:158 __rcu_reclaim kernel/rcu/rcu.h:240 [inline] rcu_do_batch kernel/rcu/tree.c:2452 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2773 [inline] rcu_process_callbacks+0xc4a/0x1680 kernel/rcu/tree.c:2754 __do_softirq+0x30b/0xb11 kernel/softirq.c:292 run_ksoftirqd kernel/softirq.c:654 [inline] run_ksoftirqd+0x8e/0x110 kernel/softirq.c:646 smpboot_thread_fn+0x6ab/0xa10 kernel/smpboot.c:164 kthread+0x357/0x430 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 INITIAL USE at: lock_acquire+0x1db/0x570 kernel/locking/lockdep.c:3841 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline] _raw_spin_lock_irq+0x60/0x80 kernel/locking/spinlock.c:160 spin_lock_irq include/linux/spinlock.h:354 [inline] aio_poll+0x790/0x14e0 fs/aio.c:1771 __io_submit_one fs/aio.c:1875 [inline] io_submit_one+0xc39/0x1050 fs/aio.c:1908 __do_sys_io_submit fs/aio.c:1953 [inline] __se_sys_io_submit fs/aio.c:1923 [inline] __x64_sys_io_submit+0x1c4/0x5d0 fs/aio.c:1923 do_syscall_64+0x1a3/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe } ... key at: [] __key.51972+0x0/0x40 ... acquired at: mark_lock_irq kernel/locking/lockdep.c:2690 [inline] mark_lock+0x519/0x1cd0 kernel/locking/lockdep.c:3062 mark_irqflags kernel/locking/lockdep.c:2940 [inline] __lock_acquire+0x139c/0x4a30 kernel/locking/lockdep.c:3295 lock_acquire+0x1db/0x570 kernel/locking/lockdep.c:3841 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline] _raw_spin_lock_irq+0x60/0x80 kernel/locking/spinlock.c:160 spin_lock_irq include/linux/spinlock.h:354 [inline] free_ioctx_users+0xa7/0x6e0 fs/aio.c:610 percpu_ref_put_many include/linux/percpu-refcount.h:285 [inline] percpu_ref_put include/linux/percpu-refcount.h:301 [inline] percpu_ref_call_confirm_rcu lib/percpu-refcount.c:123 [inline] percpu_ref_switch_to_atomic_rcu+0x50c/0x6b0 lib/percpu-refcount.c:158 __rcu_reclaim kernel/rcu/rcu.h:240 [inline] rcu_do_batch kernel/rcu/tree.c:2452 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2773 [inline] rcu_process_callbacks+0xc4a/0x1680 kernel/rcu/tree.c:2754 __do_softirq+0x30b/0xb11 kernel/softirq.c:292 run_ksoftirqd kernel/softirq.c:654 [inline] run_ksoftirqd+0x8e/0x110 kernel/softirq.c:646 smpboot_thread_fn+0x6ab/0xa10 kernel/smpboot.c:164 kthread+0x357/0x430 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 stack backtrace: CPU: 0 PID: 9 Comm: ksoftirqd/0 Not tainted 5.0.0-rc4+ #53 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1db/0x2d0 lib/dump_stack.c:113 print_irq_inversion_bug.part.0+0x2c0/0x2cd kernel/locking/lockdep.c:2556 print_irq_inversion_bug kernel/locking/lockdep.c:2559 [inline] check_usage_forwards.cold+0x20/0x29 kernel/locking/lockdep.c:2581 mark_lock_irq kernel/locking/lockdep.c:2690 [inline] mark_lock+0x519/0x1cd0 kernel/locking/lockdep.c:3062 mark_irqflags kernel/locking/lockdep.c:2940 [inline] __lock_acquire+0x139c/0x4a30 kernel/locking/lockdep.c:3295 lock_acquire+0x1db/0x570 kernel/locking/lockdep.c:3841 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:128 [inline] _raw_spin_lock_irq+0x60/0x80 kernel/locking/spinlock.c:160 spin_lock_irq include/linux/spinlock.h:354 [inline] free_ioctx_users+0xa7/0x6e0 fs/aio.c:610 percpu_ref_put_many include/linux/percpu-refcount.h:285 [inline] percpu_ref_put include/linux/percpu-refcount.h:301 [inline] percpu_ref_call_confirm_rcu lib/percpu-refcount.c:123 [inline] percpu_ref_switch_to_atomic_rcu+0x50c/0x6b0 lib/percpu-refcount.c:158 __rcu_reclaim kernel/rcu/rcu.h:240 [inline] rcu_do_batch kernel/rcu/tree.c:2452 [inline] invoke_rcu_callbacks kernel/rcu/tree.c:2773 [inline] rcu_process_callbacks+0xc4a/0x1680 kernel/rcu/tree.c:2754 __do_softirq+0x30b/0xb11 kernel/softirq.c:292 run_ksoftirqd kernel/softirq.c:654 [inline] run_ksoftirqd+0x8e/0x110 kernel/softirq.c:646 smpboot_thread_fn+0x6ab/0xa10 kernel/smpboot.c:164 kthread+0x357/0x430 kernel/kthread.c:246 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352 kobject: 'loop0' (00000000874ce12a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop4' (00000000df389581): kobject_uevent_env kobject: 'loop4' (00000000df389581): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (00000000159deb6e): kobject_uevent_env kobject: 'loop2' (00000000159deb6e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop3' (00000000db0c23a1): kobject_uevent_env kobject: 'loop3' (00000000db0c23a1): fill_kobj_path: path = '/devices/virtual/block/loop3' gfs2: path_lookup on /dev/sr0 returned error -2 block nbd0: server does not support multiple connections per device. kobject: 'loop1' (000000005309f1b5): kobject_uevent_env kobject: 'loop1' (000000005309f1b5): fill_kobj_path: path = '/devices/virtual/block/loop1' block nbd0: Device being setup by another task block nbd0: server does not support multiple connections per device. kobject: 'loop2' (00000000159deb6e): kobject_uevent_env kobject: 'loop2' (00000000159deb6e): fill_kobj_path: path = '/devices/virtual/block/loop2' block nbd0: shutting down sockets gfs2: path_lookup on /dev/sr0 returned error -2 kobject: 'loop5' (000000004937931c): kobject_uevent_env kobject: 'ppp0' (00000000091ca62a): kobject_add_internal: parent: 'net', set: 'devices' kobject: 'loop5' (000000004937931c): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000db0c23a1): kobject_uevent_env kobject: 'loop3' (00000000db0c23a1): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'ppp0' (00000000091ca62a): kobject_uevent_env kobject: 'ppp0' (00000000091ca62a): fill_kobj_path: path = '/devices/virtual/net/ppp0' kobject: 'queues' (00000000cf6ba291): kobject_add_internal: parent: 'ppp0', set: '' kobject: 'queues' (00000000cf6ba291): kobject_uevent_env kobject: 'queues' (00000000cf6ba291): kobject_uevent_env: filter function caused the event to drop! kobject: 'rx-0' (000000007059b680): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'rx-0' (000000007059b680): kobject_uevent_env kobject: 'loop1' (000000005309f1b5): kobject_uevent_env kobject: 'rx-0' (000000007059b680): fill_kobj_path: path = '/devices/virtual/net/ppp0/queues/rx-0' kobject: 'loop1' (000000005309f1b5): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'tx-0' (00000000ea7c000a): kobject_add_internal: parent: 'queues', set: 'queues' kobject: 'tx-0' (00000000ea7c000a): kobject_uevent_env kobject: 'tx-0' (00000000ea7c000a): fill_kobj_path: path = '/devices/virtual/net/ppp0/queues/tx-0' kobject: 'rx-0' (000000007059b680): kobject_cleanup, parent 00000000cf6ba291 kobject: 'rx-0' (000000007059b680): auto cleanup 'remove' event kobject: 'rx-0' (000000007059b680): kobject_uevent_env kobject: 'rx-0' (000000007059b680): fill_kobj_path: path = '/devices/virtual/net/ppp0/queues/rx-0' kobject: 'rx-0' (000000007059b680): auto cleanup kobject_del kobject: 'loop4' (00000000df389581): kobject_uevent_env kobject: 'rx-0' (000000007059b680): calling ktype release kobject: 'loop4' (00000000df389581): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop0' (00000000874ce12a): kobject_uevent_env kobject: 'rx-0': free name kobject: 'tx-0' (00000000ea7c000a): kobject_cleanup, parent 00000000cf6ba291 kobject: 'tx-0' (00000000ea7c000a): auto cleanup 'remove' event kobject: 'loop0' (00000000874ce12a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'tx-0' (00000000ea7c000a): kobject_uevent_env kobject: 'tx-0' (00000000ea7c000a): fill_kobj_path: path = '/devices/virtual/net/ppp0/queues/tx-0' kobject: 'tx-0' (00000000ea7c000a): auto cleanup kobject_del kobject: 'loop0' (00000000874ce12a): kobject_uevent_env kobject: 'tx-0' (00000000ea7c000a): calling ktype release kobject: 'tx-0': free name kobject: 'queues' (00000000cf6ba291): kobject_cleanup, parent (null) kobject: 'loop0' (00000000874ce12a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'queues' (00000000cf6ba291): calling ktype release block nbd0: server does not support multiple connections per device. gfs2: path_lookup on /dev/sr0 returned error -2 kobject: 'queues' (00000000cf6ba291): kset_release kobject: 'queues': free name kobject: 'ppp0' (00000000091ca62a): kobject_uevent_env kobject: 'loop2' (00000000159deb6e): kobject_uevent_env kobject: 'loop2' (00000000159deb6e): fill_kobj_path: path = '/devices/virtual/block/loop2' __loop_clr_fd: partition scan of loop0 failed (rc=-22) kobject: 'ppp0' (00000000091ca62a): fill_kobj_path: path = '/devices/virtual/net/ppp0' kobject: 'loop1' (000000005309f1b5): kobject_uevent_env block nbd0: shutting down sockets kobject: 'loop1' (000000005309f1b5): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'ppp0' (00000000091ca62a): kobject_cleanup, parent (null) kobject: 'ppp0' (00000000091ca62a): calling ktype release kobject: 'loop0' (00000000874ce12a): kobject_uevent_env kobject: 'ppp0': free name kobject: 'loop0' (00000000874ce12a): fill_kobj_path: path = '/devices/virtual/block/loop0' gfs2: path_lookup on /dev/sr0 returned error -2 kobject: 'loop0' (00000000874ce12a): kobject_uevent_env kobject: 'loop0' (00000000874ce12a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (00000000db0c23a1): kobject_uevent_env kobject: 'loop3' (00000000db0c23a1): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000159deb6e): kobject_uevent_env kobject: 'loop2' (00000000159deb6e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (000000004937931c): kobject_uevent_env kobject: 'loop5' (000000004937931c): fill_kobj_path: path = '/devices/virtual/block/loop5' block nbd0: server does not support multiple connections per device. kobject: 'loop4' (00000000df389581): kobject_uevent_env block nbd0: shutting down sockets kobject: 'loop4' (00000000df389581): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (00000000159deb6e): kobject_uevent_env kobject: 'loop2' (00000000159deb6e): fill_kobj_path: path = '/devices/virtual/block/loop2' __loop_clr_fd: partition scan of loop2 failed (rc=-22) kobject: 'loop1' (000000005309f1b5): kobject_uevent_env kobject: 'loop1' (000000005309f1b5): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (00000000874ce12a): kobject_uevent_env kobject: 'loop0' (00000000874ce12a): fill_kobj_path: path = '/devices/virtual/block/loop0' __loop_clr_fd: partition scan of loop0 failed (rc=-22) kobject: 'loop5' (000000004937931c): kobject_uevent_env kobject: 'loop5' (000000004937931c): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000db0c23a1): kobject_uevent_env kobject: 'loop3' (00000000db0c23a1): fill_kobj_path: path = '/devices/virtual/block/loop3' block nbd0: server does not support multiple connections per device. block nbd0: shutting down sockets kobject: 'loop1' (000000005309f1b5): kobject_uevent_env kobject: 'loop1' (000000005309f1b5): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (00000000874ce12a): kobject_uevent_env kobject: 'loop0' (00000000874ce12a): fill_kobj_path: path = '/devices/virtual/block/loop0' __loop_clr_fd: partition scan of loop1 failed (rc=-22) kobject: 'loop5' (000000004937931c): kobject_uevent_env kobject: 'loop5' (000000004937931c): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000db0c23a1): kobject_uevent_env kobject: 'loop3' (00000000db0c23a1): fill_kobj_path: path = '/devices/virtual/block/loop3' __loop_clr_fd: partition scan of loop3 failed (rc=-22) kobject: 'loop4' (00000000df389581): kobject_uevent_env __loop_clr_fd: partition scan of loop5 failed (rc=-22) kobject: 'loop2' (00000000159deb6e): kobject_uevent_env kobject: 'loop4' (00000000df389581): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (00000000159deb6e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (000000005309f1b5): kobject_uevent_env kobject: 'loop1' (000000005309f1b5): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (00000000874ce12a): kobject_uevent_env kobject: 'loop0' (00000000874ce12a): fill_kobj_path: path = '/devices/virtual/block/loop0' __loop_clr_fd: partition scan of loop0 failed (rc=-22) kobject: 'loop4' (00000000df389581): kobject_uevent_env kobject: 'loop4' (00000000df389581): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (00000000db0c23a1): kobject_uevent_env kobject: 'loop3' (00000000db0c23a1): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop1' (000000005309f1b5): kobject_uevent_env kobject: 'loop1' (000000005309f1b5): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop5' (000000004937931c): kobject_uevent_env kobject: 'loop5' (000000004937931c): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000159deb6e): kobject_uevent_env kobject: 'loop2' (00000000159deb6e): fill_kobj_path: path = '/devices/virtual/block/loop2' __loop_clr_fd: partition scan of loop2 failed (rc=-22) kobject: 'loop0' (00000000874ce12a): kobject_uevent_env kobject: 'loop0' (00000000874ce12a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (000000005309f1b5): kobject_uevent_env kobject: 'loop1' (000000005309f1b5): fill_kobj_path: path = '/devices/virtual/block/loop1' __loop_clr_fd: partition scan of loop1 failed (rc=-22) kobject: 'loop4' (00000000df389581): kobject_uevent_env kobject: 'loop4' (00000000df389581): fill_kobj_path: path = '/devices/virtual/block/loop4' __loop_clr_fd: partition scan of loop4 failed (rc=-22) kobject: 'loop3' (00000000db0c23a1): kobject_uevent_env kobject: 'loop3' (00000000db0c23a1): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop2' (00000000159deb6e): kobject_uevent_env __loop_clr_fd: partition scan of loop3 failed (rc=-22) kobject: 'loop2' (00000000159deb6e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop5' (000000004937931c): kobject_uevent_env kobject: 'loop5' (000000004937931c): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop0' (00000000874ce12a): kobject_uevent_env kobject: 'loop0' (00000000874ce12a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop2' (00000000159deb6e): kobject_uevent_env kobject: 'loop2' (00000000159deb6e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (00000000df389581): kobject_uevent_env kobject: 'loop4' (00000000df389581): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (000000004937931c): kobject_uevent_env kobject: 'loop5' (000000004937931c): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (000000005309f1b5): kobject_uevent_env kobject: 'loop1' (000000005309f1b5): fill_kobj_path: path = '/devices/virtual/block/loop1' __loop_clr_fd: partition scan of loop5 failed (rc=-22) kobject: 'loop3' (00000000db0c23a1): kobject_uevent_env kobject: 'loop3' (00000000db0c23a1): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (00000000874ce12a): kobject_uevent_env kobject: 'loop0' (00000000874ce12a): fill_kobj_path: path = '/devices/virtual/block/loop0' __loop_clr_fd: partition scan of loop0 failed (rc=-22) kobject: 'loop1' (000000005309f1b5): kobject_uevent_env kobject: 'loop1' (000000005309f1b5): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop2' (00000000159deb6e): kobject_uevent_env kobject: 'loop2' (00000000159deb6e): fill_kobj_path: path = '/devices/virtual/block/loop2' __loop_clr_fd: partition scan of loop2 failed (rc=-22) kobject: 'loop4' (00000000df389581): kobject_uevent_env kobject: 'loop4' (00000000df389581): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop5' (000000004937931c): kobject_uevent_env kobject: 'loop5' (000000004937931c): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop1' (000000005309f1b5): kobject_uevent_env kobject: 'loop1' (000000005309f1b5): fill_kobj_path: path = '/devices/virtual/block/loop1' __loop_clr_fd: partition scan of loop1 failed (rc=-22) kobject: 'loop3' (00000000db0c23a1): kobject_uevent_env kobject: 'loop3' (00000000db0c23a1): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop4' (00000000df389581): kobject_uevent_env kobject: 'loop4' (00000000df389581): fill_kobj_path: path = '/devices/virtual/block/loop4' __loop_clr_fd: partition scan of loop4 failed (rc=-22) kobject: 'loop2' (00000000159deb6e): kobject_uevent_env kobject: 'loop2' (00000000159deb6e): fill_kobj_path: path = '/devices/virtual/block/loop2' block nbd0: server does not support multiple connections per device. block nbd0: shutting down sockets kobject: 'loop5' (000000004937931c): kobject_uevent_env kobject: 'loop5' (000000004937931c): fill_kobj_path: path = '/devices/virtual/block/loop5' __loop_clr_fd: partition scan of loop5 failed (rc=-22) kobject: 'loop0' (00000000874ce12a): kobject_uevent_env kobject: 'loop0' (00000000874ce12a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (000000005309f1b5): kobject_uevent_env block nbd0: server does not support multiple connections per device. kobject: 'loop1' (000000005309f1b5): fill_kobj_path: path = '/devices/virtual/block/loop1' block nbd0: Device being setup by another task kobject: 'loop3' (00000000db0c23a1): kobject_uevent_env block nbd0: Device being setup by another task kobject: 'loop3' (00000000db0c23a1): fill_kobj_path: path = '/devices/virtual/block/loop3' block nbd0: server does not support multiple connections per device. kobject: 'loop4' (00000000df389581): kobject_uevent_env kobject: 'loop4' (00000000df389581): fill_kobj_path: path = '/devices/virtual/block/loop4' block nbd0: shutting down sockets kobject: 'loop2' (00000000159deb6e): kobject_uevent_env __loop_clr_fd: partition scan of loop3 failed (rc=-22) block nbd0: server does not support multiple connections per device. kobject: 'loop2' (00000000159deb6e): fill_kobj_path: path = '/devices/virtual/block/loop2' block nbd0: shutting down sockets kobject: 'loop0' (00000000874ce12a): kobject_uevent_env kobject: 'loop0' (00000000874ce12a): fill_kobj_path: path = '/devices/virtual/block/loop0' block nbd0: server does not support multiple connections per device. __loop_clr_fd: partition scan of loop0 failed (rc=-22) kobject: 'loop5' (000000004937931c): kobject_uevent_env kobject: 'loop5' (000000004937931c): fill_kobj_path: path = '/devices/virtual/block/loop5' block nbd0: Device being setup by another task kobject: 'loop4' (00000000df389581): kobject_uevent_env block nbd0: Device being setup by another task kobject: 'loop3' (00000000db0c23a1): kobject_uevent_env block nbd0: Device being setup by another task kobject: 'loop4' (00000000df389581): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop3' (00000000db0c23a1): fill_kobj_path: path = '/devices/virtual/block/loop3' block nbd0: Device being setup by another task kobject: 'loop3' (00000000db0c23a1): kobject_uevent_env block nbd0: server does not support multiple connections per device. kobject: 'loop3' (00000000db0c23a1): fill_kobj_path: path = '/devices/virtual/block/loop3' block nbd0: server does not support multiple connections per device. kobject: 'loop1' (000000005309f1b5): kobject_uevent_env __loop_clr_fd: partition scan of loop4 failed (rc=-22) kobject: 'loop1' (000000005309f1b5): fill_kobj_path: path = '/devices/virtual/block/loop1' block nbd0: Device being setup by another task kobject: 'loop0' (00000000874ce12a): kobject_uevent_env kobject: 'loop0' (00000000874ce12a): fill_kobj_path: path = '/devices/virtual/block/loop0' block nbd0: Device being setup by another task kobject: 'loop4' (00000000df389581): kobject_uevent_env kobject: 'loop4' (00000000df389581): fill_kobj_path: path = '/devices/virtual/block/loop4' block nbd0: server does not support multiple connections per device. kobject: 'loop1' (000000005309f1b5): kobject_uevent_env block nbd0: Device being setup by another task kobject: 'loop1' (000000005309f1b5): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (00000000874ce12a): kobject_uevent_env block nbd0: Device being setup by another task kobject: 'loop0' (00000000874ce12a): fill_kobj_path: path = '/devices/virtual/block/loop0' block nbd0: server does not support multiple connections per device. kobject: 'loop2' (00000000159deb6e): kobject_uevent_env kobject: 'loop2' (00000000159deb6e): fill_kobj_path: path = '/devices/virtual/block/loop2' block nbd0: Device being setup by another task block nbd0: Device being setup by another task kobject: 'loop5' (000000004937931c): kobject_uevent_env block nbd0: Device being setup by another task kobject: 'loop5' (000000004937931c): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop2' (00000000159deb6e): kobject_uevent_env kobject: 'loop2' (00000000159deb6e): fill_kobj_path: path = '/devices/virtual/block/loop2' block nbd0: server does not support multiple connections per device. block nbd0: Device being setup by another task kobject: 'loop0' (00000000874ce12a): kobject_uevent_env block nbd0: server does not support multiple connections per device. kobject: 'loop0' (00000000874ce12a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (00000000db0c23a1): kobject_uevent_env kobject: 'loop3' (00000000db0c23a1): fill_kobj_path: path = '/devices/virtual/block/loop3' block nbd0: shutting down sockets kobject: 'loop1' (000000005309f1b5): kobject_uevent_env __loop_clr_fd: partition scan of loop0 failed (rc=-22) kobject: 'loop1' (000000005309f1b5): fill_kobj_path: path = '/devices/virtual/block/loop1' device lo entered promiscuous mode block nbd0: server does not support multiple connections per device. kobject: 'loop0' (00000000874ce12a): kobject_uevent_env block nbd0: shutting down sockets kobject: 'loop0' (00000000874ce12a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (000000004937931c): kobject_uevent_env kobject: 'loop5' (000000004937931c): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000db0c23a1): kobject_uevent_env kobject: 'loop3' (00000000db0c23a1): fill_kobj_path: path = '/devices/virtual/block/loop3' QAT: Invalid ioctl kobject: 'loop0' (00000000874ce12a): kobject_uevent_env QAT: Invalid ioctl QAT: Invalid ioctl kobject: 'loop0' (00000000874ce12a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop1' (000000005309f1b5): kobject_uevent_env kobject: 'kvm' (00000000d0f8f590): kobject_uevent_env QAT: Invalid ioctl kobject: 'kvm' (00000000d0f8f590): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop1' (000000005309f1b5): fill_kobj_path: path = '/devices/virtual/block/loop1' QAT: Invalid ioctl QAT: Invalid ioctl kobject: 'loop1' (000000005309f1b5): kobject_uevent_env QAT: Invalid ioctl QAT: Invalid ioctl kobject: 'loop1' (000000005309f1b5): fill_kobj_path: path = '/devices/virtual/block/loop1' QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl kobject: 'loop0' (00000000874ce12a): kobject_uevent_env QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl kobject: 'loop0' (00000000874ce12a): fill_kobj_path: path = '/devices/virtual/block/loop0' QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl kobject: 'loop3' (00000000db0c23a1): kobject_uevent_env kobject: 'loop3' (00000000db0c23a1): fill_kobj_path: path = '/devices/virtual/block/loop3' __loop_clr_fd: partition scan of loop0 failed (rc=-22) kobject: 'kvm' (00000000d0f8f590): kobject_uevent_env kobject: 'kvm' (00000000d0f8f590): fill_kobj_path: path = '/devices/virtual/misc/kvm' QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl kobject: 'loop0' (00000000874ce12a): kobject_uevent_env kobject: 'loop0' (00000000874ce12a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'kvm' (00000000d0f8f590): kobject_uevent_env kobject: 'kvm' (00000000d0f8f590): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (00000000d0f8f590): kobject_uevent_env kobject: 'kvm' (00000000d0f8f590): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop4' (00000000df389581): kobject_uevent_env kobject: 'loop4' (00000000df389581): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'loop2' (00000000159deb6e): kobject_uevent_env kobject: 'loop2' (00000000159deb6e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop1' (000000005309f1b5): kobject_uevent_env kobject: 'loop1' (000000005309f1b5): fill_kobj_path: path = '/devices/virtual/block/loop1' kobject: 'loop0' (00000000874ce12a): kobject_uevent_env kobject: 'loop0' (00000000874ce12a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop3' (00000000db0c23a1): kobject_uevent_env kobject: 'loop3' (00000000db0c23a1): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'loop0' (00000000874ce12a): kobject_uevent_env kobject: 'loop0' (00000000874ce12a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'loop5' (000000004937931c): kobject_uevent_env kobject: 'loop5' (000000004937931c): fill_kobj_path: path = '/devices/virtual/block/loop5' kobject: 'loop3' (00000000db0c23a1): kobject_uevent_env kobject: 'loop3' (00000000db0c23a1): fill_kobj_path: path = '/devices/virtual/block/loop3' kobject: 'kvm' (00000000d0f8f590): kobject_uevent_env QAT: Invalid ioctl QAT: Invalid ioctl kobject: 'kvm' (00000000d0f8f590): fill_kobj_path: path = '/devices/virtual/misc/kvm' QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl kobject: 'loop2' (00000000159deb6e): kobject_uevent_env kobject: 'loop2' (00000000159deb6e): fill_kobj_path: path = '/devices/virtual/block/loop2' QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl kobject: 'kvm' (00000000d0f8f590): kobject_uevent_env kobject: 'kvm' (00000000d0f8f590): fill_kobj_path: path = '/devices/virtual/misc/kvm' device lo entered promiscuous mode kobject: 'loop4' (00000000df389581): kobject_uevent_env kobject: 'loop4' (00000000df389581): fill_kobj_path: path = '/devices/virtual/block/loop4' kobject: 'kvm' (00000000d0f8f590): kobject_uevent_env kobject: 'kvm' (00000000d0f8f590): fill_kobj_path: path = '/devices/virtual/misc/kvm' QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl device lo entered promiscuous mode QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl kobject: 'loop1' (000000005309f1b5): kobject_uevent_env QAT: Invalid ioctl kobject: 'loop1' (000000005309f1b5): fill_kobj_path: path = '/devices/virtual/block/loop1' QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl kobject: 'kvm' (00000000d0f8f590): kobject_uevent_env QAT: Invalid ioctl kobject: 'kvm' (00000000d0f8f590): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'kvm' (00000000d0f8f590): kobject_uevent_env QAT: Invalid ioctl kobject: 'kvm' (00000000d0f8f590): fill_kobj_path: path = '/devices/virtual/misc/kvm' QAT: Invalid ioctl QAT: Invalid ioctl kobject: 'loop5' (000000004937931c): kobject_uevent_env kobject: 'loop5' (000000004937931c): fill_kobj_path: path = '/devices/virtual/block/loop5' QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl kobject: 'loop0' (00000000874ce12a): kobject_uevent_env QAT: Invalid ioctl kobject: 'loop0' (00000000874ce12a): fill_kobj_path: path = '/devices/virtual/block/loop0' QAT: Invalid ioctl QAT: Invalid ioctl kobject: 'loop3' (00000000db0c23a1): kobject_uevent_env QAT: Invalid ioctl kobject: 'loop3' (00000000db0c23a1): fill_kobj_path: path = '/devices/virtual/block/loop3' QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl kobject: 'kvm' (00000000d0f8f590): kobject_uevent_env kobject: 'kvm' (00000000d0f8f590): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop2' (00000000159deb6e): kobject_uevent_env kobject: 'loop2' (00000000159deb6e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'loop4' (00000000df389581): kobject_uevent_env kobject: 'loop4' (00000000df389581): fill_kobj_path: path = '/devices/virtual/block/loop4' QAT: Invalid ioctl QAT: Invalid ioctl kobject: 'kvm' (00000000d0f8f590): kobject_uevent_env QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl kobject: 'kvm' (00000000d0f8f590): fill_kobj_path: path = '/devices/virtual/misc/kvm' QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl kobject: 'loop1' (000000005309f1b5): kobject_uevent_env kobject: 'loop1' (000000005309f1b5): fill_kobj_path: path = '/devices/virtual/block/loop1' QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl kobject: 'kvm' (00000000d0f8f590): kobject_uevent_env kobject: 'kvm' (00000000d0f8f590): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop0' (00000000874ce12a): kobject_uevent_env kobject: 'loop0' (00000000874ce12a): fill_kobj_path: path = '/devices/virtual/block/loop0' kobject: 'kvm' (00000000d0f8f590): kobject_uevent_env kobject: 'kvm' (00000000d0f8f590): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop5' (000000004937931c): kobject_uevent_env kobject: 'loop5' (000000004937931c): fill_kobj_path: path = '/devices/virtual/block/loop5' QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl kobject: 'loop3' (00000000db0c23a1): kobject_uevent_env kobject: 'loop3' (00000000db0c23a1): fill_kobj_path: path = '/devices/virtual/block/loop3' QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl kobject: 'kvm' (00000000d0f8f590): kobject_uevent_env kobject: 'kvm' (00000000d0f8f590): fill_kobj_path: path = '/devices/virtual/misc/kvm' kobject: 'loop4' (00000000df389581): kobject_uevent_env kobject: 'loop4' (00000000df389581): fill_kobj_path: path = '/devices/virtual/block/loop4' QAT: Invalid ioctl QAT: Invalid ioctl kobject: 'loop2' (00000000159deb6e): kobject_uevent_env QAT: Invalid ioctl kobject: 'kvm' (00000000d0f8f590): kobject_uevent_env kobject: 'loop2' (00000000159deb6e): fill_kobj_path: path = '/devices/virtual/block/loop2' kobject: 'kvm' (00000000d0f8f590): fill_kobj_path: path = '/devices/virtual/misc/kvm' QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl kobject: 'loop2' (00000000159deb6e): kobject_uevent_env kobject: 'loop2' (00000000159deb6e): fill_kobj_path: path = '/devices/virtual/block/loop2' QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl kobject: 'loop2' (00000000159deb6e): kobject_uevent_env QAT: Invalid ioctl kobject: 'loop2' (00000000159deb6e): fill_kobj_path: path = '/devices/virtual/block/loop2' QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl QAT: Invalid ioctl