[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.121' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program syzkaller login: [ 731.595975] FAULT_INJECTION: forcing a failure. [ 731.595975] name failslab, interval 1, probability 0, space 0, times 1 [ 731.607464] CPU: 1 PID: 8107 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 731.615332] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 731.624670] Call Trace: [ 731.627249] dump_stack+0x1fc/0x2ef [ 731.630875] should_fail.cold+0xa/0xf [ 731.634672] ? setup_fault_attr+0x200/0x200 [ 731.638990] ? lock_acquire+0x170/0x3c0 [ 731.642973] __should_failslab+0x115/0x180 [ 731.647197] should_failslab+0x5/0x10 [ 731.650986] kmem_cache_alloc+0x277/0x370 [ 731.655129] __d_alloc+0x2b/0xa10 [ 731.658568] ? __bpf_address_lookup+0x330/0x330 [ 731.663231] ? check_preemption_disabled+0x41/0x280 [ 731.668250] d_alloc+0x4a/0x230 [ 731.671531] d_alloc_parallel+0xeb/0x19e0 [ 731.675675] ? mark_held_locks+0xf0/0xf0 [ 731.679732] ? __d_lookup_rcu+0x6b0/0x6b0 [ 731.683874] ? mark_held_locks+0xf0/0xf0 [ 731.687946] ? __lockdep_init_map+0x100/0x5a0 [ 731.692451] ? __lockdep_init_map+0x100/0x5a0 [ 731.696933] __lookup_slow+0x18d/0x4a0 [ 731.700815] ? check_preemption_disabled+0x41/0x280 [ 731.705822] ? follow_dotdot_rcu+0x1040/0x1040 [ 731.710392] ? __d_lookup+0x411/0x710 [ 731.714192] ? d_lookup+0x18e/0x250 [ 731.717822] lookup_one_len+0x163/0x190 [ 731.721780] ? try_lookup_one_len+0x180/0x180 [ 731.726260] start_creating+0xc9/0x220 [ 731.730133] __debugfs_create_file+0x5e/0x480 [ 731.734620] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 731.739799] ? kvm_clock_get_cycles+0x14/0x30 [ 731.744277] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 731.749111] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 731.754045] ? init_srcu_struct_fields+0xca6/0x1190 [ 731.759061] ? srcu_reschedule+0x120/0x120 [ 731.763288] ? __raw_spin_lock_init+0x28/0x100 [ 731.767855] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 731.772598] ? nbd_clear_que+0x160/0x160 [ 731.776644] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 731.781816] ? workqueue_sysfs_register+0x391/0x3e0 [ 731.786833] ? blk_mq_init_queue+0xa0/0xa0 [ 731.791073] ? apparmor_sb_mount+0x970/0x970 [ 731.795469] nbd_start_device+0x1f2/0xd60 [ 731.799603] ? security_capable+0x8f/0xc0 [ 731.803750] nbd_ioctl+0x62c/0xbe0 [ 731.807293] ? _copy_from_user+0xd2/0x130 [ 731.811448] ? nbd_disconnect_and_put+0x190/0x190 [ 731.816286] ? __lock_acquire+0x6de/0x3ff0 [ 731.820505] ? nbd_disconnect_and_put+0x190/0x190 [ 731.825439] blkdev_ioctl+0x5cb/0x1a80 [ 731.829312] ? blkpg_ioctl+0x9d0/0x9d0 [ 731.833213] ? get_pid_task+0xf4/0x190 [ 731.837088] ? mark_held_locks+0xf0/0xf0 [ 731.841133] ? proc_fail_nth_write+0x95/0x1d0 [ 731.845611] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 731.850526] ? __fdget_pos+0x26f/0x310 [ 731.854403] block_ioctl+0xe9/0x130 [ 731.858019] ? blkdev_fallocate+0x3f0/0x3f0 [ 731.862329] do_vfs_ioctl+0xcdb/0x12e0 [ 731.866201] ? lock_downgrade+0x720/0x720 [ 731.870337] ? check_preemption_disabled+0x41/0x280 [ 731.875351] ? ioctl_preallocate+0x200/0x200 [ 731.879746] ? __fget+0x356/0x510 [ 731.883185] ? do_dup2+0x450/0x450 [ 731.886707] ? vfs_write+0x393/0x540 [ 731.890405] ? fput+0x2b/0x190 [ 731.893585] ksys_ioctl+0x9b/0xc0 [ 731.897035] __x64_sys_ioctl+0x6f/0xb0 [ 731.900915] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 731.905486] do_syscall_64+0xf9/0x620 [ 731.909291] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 731.914576] RIP: 0033:0x7f03750e1089 [ 731.918273] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 731.937159] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 731.944868] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 731.952131] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 731.959389] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 731.966652] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 731.973949] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 731.983974] FAULT_INJECTION: forcing a failure. [ 731.983974] name failslab, interval 1, probability 0, space 0, times 1 [ 731.995568] FAULT_INJECTION: forcing a failure. [ 731.995568] name failslab, interval 1, probability 0, space 0, times 0 [ 731.996182] FAULT_INJECTION: forcing a failure. [ 731.996182] name failslab, interval 1, probability 0, space 0, times 0 [ 732.007227] CPU: 0 PID: 8118 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 732.025942] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 732.035280] Call Trace: [ 732.037859] dump_stack+0x1fc/0x2ef [ 732.041482] should_fail.cold+0xa/0xf [ 732.045273] ? setup_fault_attr+0x200/0x200 [ 732.049582] ? lock_acquire+0x170/0x3c0 [ 732.053550] __should_failslab+0x115/0x180 [ 732.057772] should_failslab+0x5/0x10 [ 732.061557] kmem_cache_alloc+0x277/0x370 [ 732.065701] __d_alloc+0x2b/0xa10 [ 732.069143] ? __bpf_address_lookup+0x330/0x330 [ 732.073802] ? check_preemption_disabled+0x41/0x280 [ 732.078806] d_alloc+0x4a/0x230 [ 732.082085] d_alloc_parallel+0xeb/0x19e0 [ 732.086230] ? mark_held_locks+0xf0/0xf0 [ 732.090281] ? __d_lookup_rcu+0x6b0/0x6b0 [ 732.094422] ? mark_held_locks+0xf0/0xf0 [ 732.098471] ? __lockdep_init_map+0x100/0x5a0 [ 732.102954] ? __lockdep_init_map+0x100/0x5a0 [ 732.107441] __lookup_slow+0x18d/0x4a0 [ 732.111316] ? check_preemption_disabled+0x41/0x280 [ 732.116331] ? follow_dotdot_rcu+0x1040/0x1040 [ 732.120917] ? __d_lookup+0x411/0x710 [ 732.124715] ? d_lookup+0x18e/0x250 [ 732.128344] lookup_one_len+0x163/0x190 [ 732.132313] ? try_lookup_one_len+0x180/0x180 [ 732.136803] start_creating+0xc9/0x220 [ 732.140684] __debugfs_create_file+0x5e/0x480 [ 732.145175] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 732.150366] ? kvm_clock_get_cycles+0x14/0x30 [ 732.154860] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 732.159700] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 732.164619] ? init_srcu_struct_fields+0xca6/0x1190 [ 732.169634] ? srcu_reschedule+0x120/0x120 [ 732.173862] ? __raw_spin_lock_init+0x28/0x100 [ 732.178438] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 732.183215] ? nbd_clear_que+0x160/0x160 [ 732.187268] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 732.192277] ? workqueue_sysfs_register+0x391/0x3e0 [ 732.197284] ? blk_mq_init_queue+0xa0/0xa0 [ 732.201510] ? apparmor_sb_mount+0x970/0x970 [ 732.205911] nbd_start_device+0x1f2/0xd60 [ 732.210058] ? security_capable+0x8f/0xc0 [ 732.214216] nbd_ioctl+0x62c/0xbe0 [ 732.217746] ? _copy_from_user+0xd2/0x130 [ 732.221887] ? nbd_disconnect_and_put+0x190/0x190 [ 732.226724] ? __lock_acquire+0x6de/0x3ff0 [ 732.230947] ? nbd_disconnect_and_put+0x190/0x190 [ 732.235924] blkdev_ioctl+0x5cb/0x1a80 [ 732.239813] ? blkpg_ioctl+0x9d0/0x9d0 [ 732.243697] ? get_pid_task+0xf4/0x190 [ 732.247580] ? mark_held_locks+0xf0/0xf0 [ 732.251634] ? proc_fail_nth_write+0x95/0x1d0 [ 732.256125] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 732.261043] ? __fdget_pos+0x26f/0x310 [ 732.264926] block_ioctl+0xe9/0x130 [ 732.268543] ? blkdev_fallocate+0x3f0/0x3f0 [ 732.272858] do_vfs_ioctl+0xcdb/0x12e0 [ 732.276738] ? lock_downgrade+0x720/0x720 [ 732.280874] ? check_preemption_disabled+0x41/0x280 [ 732.285880] ? ioctl_preallocate+0x200/0x200 [ 732.290451] ? __fget+0x356/0x510 [ 732.293892] ? do_dup2+0x450/0x450 [ 732.297440] ? vfs_write+0x393/0x540 [ 732.301146] ? fput+0x2b/0x190 [ 732.304332] ksys_ioctl+0x9b/0xc0 [ 732.307780] __x64_sys_ioctl+0x6f/0xb0 [ 732.311662] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 732.316250] do_syscall_64+0xf9/0x620 [ 732.320050] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 732.325228] RIP: 0033:0x7f03750e1089 [ 732.328930] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 732.347822] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 732.355519] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 732.362779] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 732.370037] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 732.377296] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 732.384550] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 732.394317] FAULT_INJECTION: forcing a failure. [ 732.394317] name failslab, interval 1, probability 0, space 0, times 0 [ 732.397565] CPU: 0 PID: 8117 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 732.406357] FAULT_INJECTION: forcing a failure. [ 732.406357] name failslab, interval 1, probability 0, space 0, times 0 [ 732.413383] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 732.433880] Call Trace: [ 732.436468] dump_stack+0x1fc/0x2ef [ 732.440098] should_fail.cold+0xa/0xf [ 732.443898] ? setup_fault_attr+0x200/0x200 [ 732.448232] ? lock_acquire+0x170/0x3c0 [ 732.452214] __should_failslab+0x115/0x180 [ 732.456446] should_failslab+0x5/0x10 [ 732.460238] kmem_cache_alloc+0x277/0x370 [ 732.464385] alloc_inode+0xab/0x180 [ 732.468006] new_inode+0x1d/0xf0 [ 732.471368] debugfs_get_inode+0x1a/0x130 [ 732.475507] __debugfs_create_file+0xb2/0x480 [ 732.480003] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 732.485187] ? kvm_clock_get_cycles+0x14/0x30 [ 732.489678] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 732.494517] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 732.499440] ? init_srcu_struct_fields+0xca6/0x1190 [ 732.504458] ? srcu_reschedule+0x120/0x120 [ 732.508690] ? __raw_spin_lock_init+0x28/0x100 [ 732.513270] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 732.518028] ? nbd_clear_que+0x160/0x160 [ 732.522089] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 732.527103] ? workqueue_sysfs_register+0x391/0x3e0 [ 732.532114] ? blk_mq_init_queue+0xa0/0xa0 [ 732.536347] ? apparmor_sb_mount+0x970/0x970 [ 732.540766] nbd_start_device+0x1f2/0xd60 [ 732.544917] ? security_capable+0x8f/0xc0 [ 732.549061] nbd_ioctl+0x62c/0xbe0 [ 732.552596] ? _copy_from_user+0xd2/0x130 [ 732.556739] ? nbd_disconnect_and_put+0x190/0x190 [ 732.561578] ? __lock_acquire+0x6de/0x3ff0 [ 732.565838] ? nbd_disconnect_and_put+0x190/0x190 [ 732.570695] blkdev_ioctl+0x5cb/0x1a80 [ 732.574589] ? blkpg_ioctl+0x9d0/0x9d0 [ 732.578482] ? get_pid_task+0xf4/0x190 [ 732.582371] ? mark_held_locks+0xf0/0xf0 [ 732.586434] ? proc_fail_nth_write+0x95/0x1d0 [ 732.590922] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 732.595851] ? __fdget_pos+0x26f/0x310 [ 732.599909] block_ioctl+0xe9/0x130 [ 732.603524] ? blkdev_fallocate+0x3f0/0x3f0 [ 732.607835] do_vfs_ioctl+0xcdb/0x12e0 [ 732.611720] ? lock_downgrade+0x720/0x720 [ 732.615869] ? check_preemption_disabled+0x41/0x280 [ 732.621060] ? ioctl_preallocate+0x200/0x200 [ 732.625478] ? __fget+0x356/0x510 [ 732.628926] ? do_dup2+0x450/0x450 [ 732.632457] ? vfs_write+0x393/0x540 [ 732.636161] ? fput+0x2b/0x190 [ 732.639369] ksys_ioctl+0x9b/0xc0 [ 732.642820] __x64_sys_ioctl+0x6f/0xb0 [ 732.646746] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 732.651322] do_syscall_64+0xf9/0x620 [ 732.655134] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 732.660323] RIP: 0033:0x7f03750e1089 [ 732.664125] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 732.683025] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 732.690722] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 732.697984] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 732.705246] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 732.712506] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 732.719762] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 732.727037] CPU: 1 PID: 8115 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 732.734929] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 732.744277] Call Trace: [ 732.746872] dump_stack+0x1fc/0x2ef [ 732.750508] should_fail.cold+0xa/0xf [ 732.754315] ? setup_fault_attr+0x200/0x200 [ 732.758649] ? lock_acquire+0x170/0x3c0 [ 732.762633] __should_failslab+0x115/0x180 [ 732.766877] should_failslab+0x5/0x10 [ 732.770680] kmem_cache_alloc+0x277/0x370 [ 732.774834] __d_alloc+0x2b/0xa10 [ 732.778288] ? __bpf_address_lookup+0x330/0x330 [ 732.782962] ? check_preemption_disabled+0x41/0x280 [ 732.787978] d_alloc+0x4a/0x230 [ 732.791250] d_alloc_parallel+0xeb/0x19e0 [ 732.795400] ? mark_held_locks+0xf0/0xf0 [ 732.799450] ? __d_lookup_rcu+0x6b0/0x6b0 [ 732.803591] ? mark_held_locks+0xf0/0xf0 [ 732.807644] ? __lockdep_init_map+0x100/0x5a0 [ 732.812128] ? __lockdep_init_map+0x100/0x5a0 [ 732.816617] __lookup_slow+0x18d/0x4a0 [ 732.820495] ? check_preemption_disabled+0x41/0x280 [ 732.825501] ? follow_dotdot_rcu+0x1040/0x1040 [ 732.830073] ? __d_lookup+0x411/0x710 [ 732.833877] ? d_lookup+0x18e/0x250 [ 732.837497] lookup_one_len+0x163/0x190 [ 732.841460] ? try_lookup_one_len+0x180/0x180 [ 732.845949] start_creating+0xc9/0x220 [ 732.849824] __debugfs_create_file+0x5e/0x480 [ 732.854313] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 732.859491] ? kvm_clock_get_cycles+0x14/0x30 [ 732.863973] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 732.868803] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 732.873732] ? init_srcu_struct_fields+0xca6/0x1190 [ 732.878738] ? srcu_reschedule+0x120/0x120 [ 732.882965] ? __raw_spin_lock_init+0x28/0x100 [ 732.887538] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 732.892283] ? nbd_clear_que+0x160/0x160 [ 732.896340] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 732.901348] ? workqueue_sysfs_register+0x391/0x3e0 [ 732.906358] ? blk_mq_init_queue+0xa0/0xa0 [ 732.910580] ? apparmor_sb_mount+0x970/0x970 [ 732.914981] nbd_start_device+0x1f2/0xd60 [ 732.919120] ? security_capable+0x8f/0xc0 [ 732.923260] nbd_ioctl+0x62c/0xbe0 [ 732.926793] ? _copy_from_user+0xd2/0x130 [ 732.930949] ? nbd_disconnect_and_put+0x190/0x190 [ 732.935786] ? __lock_acquire+0x6de/0x3ff0 [ 732.940016] ? nbd_disconnect_and_put+0x190/0x190 [ 732.944853] blkdev_ioctl+0x5cb/0x1a80 [ 732.948736] ? blkpg_ioctl+0x9d0/0x9d0 [ 732.952617] ? get_pid_task+0xf4/0x190 [ 732.956495] ? mark_held_locks+0xf0/0xf0 [ 732.960542] ? proc_fail_nth_write+0x95/0x1d0 [ 732.965024] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 732.969943] ? __fdget_pos+0x26f/0x310 [ 732.973827] block_ioctl+0xe9/0x130 [ 732.977441] ? blkdev_fallocate+0x3f0/0x3f0 [ 732.981755] do_vfs_ioctl+0xcdb/0x12e0 [ 732.985636] ? lock_downgrade+0x720/0x720 [ 732.989775] ? check_preemption_disabled+0x41/0x280 [ 732.994889] ? ioctl_preallocate+0x200/0x200 [ 732.999287] ? __fget+0x356/0x510 [ 733.002728] ? do_dup2+0x450/0x450 [ 733.006264] ? vfs_write+0x393/0x540 [ 733.009966] ? fput+0x2b/0x190 [ 733.013149] ksys_ioctl+0x9b/0xc0 [ 733.016592] __x64_sys_ioctl+0x6f/0xb0 [ 733.020466] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 733.025036] do_syscall_64+0xf9/0x620 [ 733.028839] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 733.034015] RIP: 0033:0x7f03750e1089 [ 733.037804] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 733.056689] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 733.064384] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 733.071651] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 733.078911] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 733.086170] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 733.093429] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 733.100913] CPU: 0 PID: 8116 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 733.108817] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 733.118173] Call Trace: [ 733.120767] dump_stack+0x1fc/0x2ef [ 733.124402] should_fail.cold+0xa/0xf [ 733.128218] ? setup_fault_attr+0x200/0x200 [ 733.132550] ? lock_acquire+0x170/0x3c0 [ 733.136535] __should_failslab+0x115/0x180 [ 733.140772] should_failslab+0x5/0x10 [ 733.144571] kmem_cache_alloc+0x277/0x370 [ 733.148721] alloc_inode+0xab/0x180 [ 733.152345] new_inode+0x1d/0xf0 [ 733.155718] debugfs_get_inode+0x1a/0x130 [ 733.159862] __debugfs_create_file+0xb2/0x480 [ 733.164355] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 733.169715] ? kvm_clock_get_cycles+0x14/0x30 [ 733.174216] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 733.179063] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 733.183993] ? init_srcu_struct_fields+0xca6/0x1190 [ 733.189013] ? srcu_reschedule+0x120/0x120 [ 733.193249] ? __raw_spin_lock_init+0x28/0x100 [ 733.197838] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 733.202592] ? nbd_clear_que+0x160/0x160 [ 733.206907] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 733.211917] ? workqueue_sysfs_register+0x391/0x3e0 [ 733.216930] ? blk_mq_init_queue+0xa0/0xa0 [ 733.221159] ? apparmor_sb_mount+0x970/0x970 [ 733.225566] nbd_start_device+0x1f2/0xd60 [ 733.229711] ? security_capable+0x8f/0xc0 [ 733.233853] nbd_ioctl+0x62c/0xbe0 [ 733.237385] ? _copy_from_user+0xd2/0x130 [ 733.241524] ? nbd_disconnect_and_put+0x190/0x190 [ 733.246367] ? __lock_acquire+0x6de/0x3ff0 [ 733.250599] ? nbd_disconnect_and_put+0x190/0x190 [ 733.255434] blkdev_ioctl+0x5cb/0x1a80 [ 733.259324] ? blkpg_ioctl+0x9d0/0x9d0 [ 733.263299] ? get_pid_task+0xf4/0x190 [ 733.267179] ? mark_held_locks+0xf0/0xf0 [ 733.271239] ? proc_fail_nth_write+0x95/0x1d0 [ 733.275723] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 733.280645] ? __fdget_pos+0x26f/0x310 [ 733.284541] block_ioctl+0xe9/0x130 [ 733.288156] ? blkdev_fallocate+0x3f0/0x3f0 [ 733.292470] do_vfs_ioctl+0xcdb/0x12e0 [ 733.296348] ? lock_downgrade+0x720/0x720 [ 733.300488] ? check_preemption_disabled+0x41/0x280 [ 733.305490] ? ioctl_preallocate+0x200/0x200 [ 733.309888] ? __fget+0x356/0x510 [ 733.313334] ? do_dup2+0x450/0x450 [ 733.316861] ? vfs_write+0x393/0x540 [ 733.320702] ? fput+0x2b/0x190 [ 733.323902] ksys_ioctl+0x9b/0xc0 [ 733.327359] __x64_sys_ioctl+0x6f/0xb0 [ 733.331249] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 733.335836] do_syscall_64+0xf9/0x620 [ 733.339632] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 733.344810] RIP: 0033:0x7f03750e1089 [ 733.348511] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 733.367401] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 733.375097] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 733.382352] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 733.389606] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 733.396863] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 733.404119] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 733.411393] CPU: 1 PID: 8114 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 733.419275] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 733.428638] Call Trace: [ 733.431236] dump_stack+0x1fc/0x2ef [ 733.434870] should_fail.cold+0xa/0xf [ 733.438670] ? setup_fault_attr+0x200/0x200 [ 733.442981] ? lock_acquire+0x170/0x3c0 [ 733.446944] __should_failslab+0x115/0x180 [ 733.451169] should_failslab+0x5/0x10 [ 733.454954] kmem_cache_alloc+0x277/0x370 [ 733.459093] __d_alloc+0x2b/0xa10 [ 733.462532] ? __bpf_address_lookup+0x330/0x330 [ 733.467185] ? check_preemption_disabled+0x41/0x280 [ 733.472192] d_alloc+0x4a/0x230 [ 733.475460] d_alloc_parallel+0xeb/0x19e0 [ 733.479605] ? mark_held_locks+0xf0/0xf0 [ 733.483653] ? __d_lookup_rcu+0x6b0/0x6b0 [ 733.487789] ? mark_held_locks+0xf0/0xf0 [ 733.491835] ? __lockdep_init_map+0x100/0x5a0 [ 733.496315] ? __lockdep_init_map+0x100/0x5a0 [ 733.500802] __lookup_slow+0x18d/0x4a0 [ 733.504673] ? check_preemption_disabled+0x41/0x280 [ 733.509674] ? follow_dotdot_rcu+0x1040/0x1040 [ 733.514244] ? __d_lookup+0x411/0x710 [ 733.518038] ? d_lookup+0x18e/0x250 [ 733.521666] lookup_one_len+0x163/0x190 [ 733.525626] ? try_lookup_one_len+0x180/0x180 [ 733.530110] start_creating+0xc9/0x220 [ 733.533982] __debugfs_create_file+0x5e/0x480 [ 733.538478] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 733.543651] ? kvm_clock_get_cycles+0x14/0x30 [ 733.548130] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 733.552970] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 733.557884] ? init_srcu_struct_fields+0xca6/0x1190 [ 733.562888] ? srcu_reschedule+0x120/0x120 [ 733.567108] ? __raw_spin_lock_init+0x28/0x100 [ 733.571679] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 733.576424] ? nbd_clear_que+0x160/0x160 [ 733.580485] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 733.585488] ? workqueue_sysfs_register+0x391/0x3e0 [ 733.590510] ? blk_mq_init_queue+0xa0/0xa0 [ 733.594736] ? apparmor_sb_mount+0x970/0x970 [ 733.599148] nbd_start_device+0x1f2/0xd60 [ 733.603294] ? security_capable+0x8f/0xc0 [ 733.607451] nbd_ioctl+0x62c/0xbe0 [ 733.610992] ? _copy_from_user+0xd2/0x130 [ 733.615139] ? nbd_disconnect_and_put+0x190/0x190 [ 733.619980] ? __lock_acquire+0x6de/0x3ff0 [ 733.624214] ? nbd_disconnect_and_put+0x190/0x190 [ 733.629045] blkdev_ioctl+0x5cb/0x1a80 [ 733.632923] ? blkpg_ioctl+0x9d0/0x9d0 [ 733.636801] ? get_pid_task+0xf4/0x190 [ 733.640692] ? mark_held_locks+0xf0/0xf0 [ 733.644738] ? proc_fail_nth_write+0x95/0x1d0 [ 733.649244] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 733.654213] ? __fdget_pos+0x26f/0x310 [ 733.658093] block_ioctl+0xe9/0x130 [ 733.661706] ? blkdev_fallocate+0x3f0/0x3f0 [ 733.666013] do_vfs_ioctl+0xcdb/0x12e0 [ 733.669890] ? lock_downgrade+0x720/0x720 [ 733.674027] ? check_preemption_disabled+0x41/0x280 [ 733.679034] ? ioctl_preallocate+0x200/0x200 [ 733.683435] ? __fget+0x356/0x510 [ 733.686881] ? do_dup2+0x450/0x450 [ 733.690407] ? vfs_write+0x393/0x540 [ 733.694109] ? fput+0x2b/0x190 [ 733.697298] ksys_ioctl+0x9b/0xc0 [ 733.700739] __x64_sys_ioctl+0x6f/0xb0 [ 733.704614] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 733.709182] do_syscall_64+0xf9/0x620 [ 733.712970] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 733.718142] RIP: 0033:0x7f03750e1089 [ 733.721841] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 733.740722] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 733.748422] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 733.755672] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 733.762924] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 733.770178] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 733.777439] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 733.786250] block nbd1: shutting down sockets [ 733.791348] block nbd4: shutting down sockets [ 733.797263] block nbd5: shutting down sockets [ 733.805939] block nbd3: shutting down sockets executing program executing program executing program executing program executing program [ 733.831684] block nbd0: shutting down sockets executing program [ 733.882438] block nbd2: shutting down sockets [ 733.916111] FAULT_INJECTION: forcing a failure. [ 733.916111] name failslab, interval 1, probability 0, space 0, times 0 [ 733.925851] FAULT_INJECTION: forcing a failure. [ 733.925851] name failslab, interval 1, probability 0, space 0, times 0 [ 733.927791] CPU: 1 PID: 8153 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 733.946654] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 733.955995] Call Trace: [ 733.958576] dump_stack+0x1fc/0x2ef [ 733.962194] should_fail.cold+0xa/0xf [ 733.965985] ? setup_fault_attr+0x200/0x200 [ 733.970303] ? lock_acquire+0x170/0x3c0 [ 733.974276] __should_failslab+0x115/0x180 [ 733.978507] should_failslab+0x5/0x10 [ 733.982299] kmem_cache_alloc_node+0x245/0x3b0 [ 733.986878] __alloc_skb+0x71/0x560 [ 733.990500] alloc_uevent_skb+0x7b/0x210 [ 733.994569] kobject_uevent_env+0xa90/0x1480 [ 733.998984] ? nbd_size_update+0x28a/0x660 [ 734.003210] ? queue_work_on+0x11a/0x1f0 [ 734.007264] nbd_start_device+0x811/0xd60 [ 734.011409] nbd_ioctl+0x62c/0xbe0 [ 734.014943] ? _copy_from_user+0xd2/0x130 [ 734.019085] ? nbd_disconnect_and_put+0x190/0x190 [ 734.023929] ? __lock_acquire+0x6de/0x3ff0 [ 734.028154] ? nbd_disconnect_and_put+0x190/0x190 [ 734.032988] blkdev_ioctl+0x5cb/0x1a80 [ 734.036862] ? blkpg_ioctl+0x9d0/0x9d0 [ 734.040741] ? get_pid_task+0xf4/0x190 [ 734.044619] ? mark_held_locks+0xf0/0xf0 [ 734.048668] ? proc_fail_nth_write+0x95/0x1d0 [ 734.053166] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 734.058093] ? __fdget_pos+0x26f/0x310 [ 734.061978] block_ioctl+0xe9/0x130 [ 734.065601] ? blkdev_fallocate+0x3f0/0x3f0 [ 734.069916] do_vfs_ioctl+0xcdb/0x12e0 [ 734.073803] ? lock_downgrade+0x720/0x720 [ 734.077942] ? check_preemption_disabled+0x41/0x280 [ 734.082953] ? ioctl_preallocate+0x200/0x200 [ 734.087363] ? __fget+0x356/0x510 [ 734.090832] ? do_dup2+0x450/0x450 [ 734.094364] ? vfs_write+0x393/0x540 [ 734.098072] ? fput+0x2b/0x190 [ 734.101260] ksys_ioctl+0x9b/0xc0 [ 734.104705] __x64_sys_ioctl+0x6f/0xb0 [ 734.108581] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 734.113150] do_syscall_64+0xf9/0x620 [ 734.116946] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 734.122122] RIP: 0033:0x7f03750e1089 [ 734.125823] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 734.144719] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 734.152419] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 734.159685] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 734.166949] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 734.174206] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 734.181461] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 734.188754] CPU: 0 PID: 8155 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 734.190118] FAULT_INJECTION: forcing a failure. [ 734.190118] name failslab, interval 1, probability 0, space 0, times 0 [ 734.196630] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 734.196635] Call Trace: [ 734.196655] dump_stack+0x1fc/0x2ef [ 734.196673] should_fail.cold+0xa/0xf [ 734.196689] ? setup_fault_attr+0x200/0x200 [ 734.196704] ? lock_acquire+0x170/0x3c0 [ 734.196723] __should_failslab+0x115/0x180 [ 734.239644] should_failslab+0x5/0x10 [ 734.243434] __kmalloc+0x2ab/0x3c0 [ 734.246966] ? kobject_get_path+0xbf/0x240 [ 734.251198] kobject_get_path+0xbf/0x240 [ 734.255257] kobject_uevent_env+0x25c/0x1480 [ 734.259661] ? nbd_size_update+0x28a/0x660 [ 734.263885] ? queue_work_on+0x11a/0x1f0 [ 734.267939] nbd_start_device+0x811/0xd60 [ 734.272088] nbd_ioctl+0x62c/0xbe0 [ 734.275623] ? _copy_from_user+0xd2/0x130 [ 734.279759] ? nbd_disconnect_and_put+0x190/0x190 [ 734.284613] ? __lock_acquire+0x6de/0x3ff0 [ 734.288847] ? nbd_disconnect_and_put+0x190/0x190 [ 734.293771] blkdev_ioctl+0x5cb/0x1a80 [ 734.297654] ? blkpg_ioctl+0x9d0/0x9d0 [ 734.301533] ? get_pid_task+0xf4/0x190 [ 734.305414] ? mark_held_locks+0xf0/0xf0 [ 734.309462] ? proc_fail_nth_write+0x95/0x1d0 [ 734.313960] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 734.318746] block nbd5: shutting down sockets [ 734.318883] ? __fdget_pos+0x26f/0x310 [ 734.327244] block_ioctl+0xe9/0x130 [ 734.330862] ? blkdev_fallocate+0x3f0/0x3f0 [ 734.335175] do_vfs_ioctl+0xcdb/0x12e0 [ 734.339053] ? lock_downgrade+0x720/0x720 [ 734.343189] ? check_preemption_disabled+0x41/0x280 [ 734.348194] ? ioctl_preallocate+0x200/0x200 [ 734.352595] ? __fget+0x356/0x510 [ 734.356046] ? do_dup2+0x450/0x450 [ 734.359572] ? vfs_write+0x393/0x540 [ 734.363273] ? fput+0x2b/0x190 [ 734.366459] ksys_ioctl+0x9b/0xc0 [ 734.369901] __x64_sys_ioctl+0x6f/0xb0 [ 734.373783] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 734.378352] do_syscall_64+0xf9/0x620 [ 734.382148] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 734.387327] RIP: 0033:0x7f03750e1089 [ 734.391034] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 734.409931] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 734.417634] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 734.424898] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 734.432157] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 734.439415] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 734.446672] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 734.453946] CPU: 1 PID: 8150 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 executing program [ 734.461832] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 734.471186] Call Trace: [ 734.473783] dump_stack+0x1fc/0x2ef [ 734.474393] block nbd2: Could not allocate knbd recv work queue. [ 734.477410] should_fail.cold+0xa/0xf [ 734.487327] ? setup_fault_attr+0x200/0x200 [ 734.490703] block nbd2: shutting down sockets [ 734.491648] ? lock_acquire+0x170/0x3c0 [ 734.491669] __should_failslab+0x115/0x180 [ 734.491685] should_failslab+0x5/0x10 [ 734.491703] kmem_cache_alloc_node+0x245/0x3b0 [ 734.512867] __alloc_skb+0x71/0x560 executing program [ 734.516503] alloc_uevent_skb+0x7b/0x210 [ 734.520570] kobject_uevent_env+0xa90/0x1480 [ 734.524989] ? nbd_size_update+0x28a/0x660 [ 734.529232] ? queue_work_on+0x11a/0x1f0 [ 734.530502] block nbd0: shutting down sockets [ 734.533294] nbd_start_device+0x811/0xd60 [ 734.533318] nbd_ioctl+0x62c/0xbe0 [ 734.533334] ? _copy_from_user+0xd2/0x130 [ 734.549595] ? nbd_disconnect_and_put+0x190/0x190 [ 734.554423] ? __lock_acquire+0x6de/0x3ff0 [ 734.558638] ? nbd_disconnect_and_put+0x190/0x190 [ 734.563463] blkdev_ioctl+0x5cb/0x1a80 [ 734.567336] ? blkpg_ioctl+0x9d0/0x9d0 [ 734.571210] ? get_pid_task+0xf4/0x190 [ 734.575079] ? mark_held_locks+0xf0/0xf0 [ 734.579118] ? proc_fail_nth_write+0x95/0x1d0 [ 734.583593] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 734.588501] ? __fdget_pos+0x26f/0x310 [ 734.592373] block_ioctl+0xe9/0x130 [ 734.595982] ? blkdev_fallocate+0x3f0/0x3f0 [ 734.600290] do_vfs_ioctl+0xcdb/0x12e0 [ 734.604169] ? lock_downgrade+0x720/0x720 [ 734.608309] ? check_preemption_disabled+0x41/0x280 [ 734.613308] ? ioctl_preallocate+0x200/0x200 [ 734.617711] ? __fget+0x356/0x510 [ 734.621159] ? do_dup2+0x450/0x450 [ 734.624689] ? vfs_write+0x393/0x540 [ 734.628395] ? fput+0x2b/0x190 [ 734.631570] ksys_ioctl+0x9b/0xc0 [ 734.635006] __x64_sys_ioctl+0x6f/0xb0 [ 734.638975] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 734.643548] do_syscall_64+0xf9/0x620 [ 734.647341] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 734.652517] RIP: 0033:0x7f03750e1089 [ 734.656221] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 734.675102] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 734.682791] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 734.690047] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 734.697295] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 734.704543] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 734.711793] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 executing program executing program [ 734.720449] block nbd1: shutting down sockets [ 734.723764] FAULT_INJECTION: forcing a failure. [ 734.723764] name failslab, interval 1, probability 0, space 0, times 0 [ 734.738548] CPU: 0 PID: 8151 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 734.746439] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 734.755781] Call Trace: [ 734.758354] dump_stack+0x1fc/0x2ef [ 734.761962] should_fail.cold+0xa/0xf [ 734.765749] ? setup_fault_attr+0x200/0x200 [ 734.770050] ? lock_acquire+0x170/0x3c0 [ 734.774011] __should_failslab+0x115/0x180 [ 734.778230] should_failslab+0x5/0x10 [ 734.782017] kmem_cache_alloc_node+0x245/0x3b0 [ 734.786598] __alloc_skb+0x71/0x560 [ 734.790221] alloc_uevent_skb+0x7b/0x210 [ 734.794277] kobject_uevent_env+0xa90/0x1480 [ 734.798695] ? nbd_size_update+0x28a/0x660 [ 734.802919] ? queue_work_on+0x11a/0x1f0 [ 734.806965] nbd_start_device+0x811/0xd60 [ 734.811102] nbd_ioctl+0x62c/0xbe0 [ 734.814656] ? _copy_from_user+0xd2/0x130 [ 734.818802] ? nbd_disconnect_and_put+0x190/0x190 [ 734.823643] ? __lock_acquire+0x6de/0x3ff0 [ 734.827862] ? nbd_disconnect_and_put+0x190/0x190 [ 734.832693] blkdev_ioctl+0x5cb/0x1a80 [ 734.836561] ? blkpg_ioctl+0x9d0/0x9d0 [ 734.840455] ? get_pid_task+0xf4/0x190 [ 734.844334] ? mark_held_locks+0xf0/0xf0 [ 734.848390] ? proc_fail_nth_write+0x95/0x1d0 [ 734.852876] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 734.857789] ? __fdget_pos+0x26f/0x310 [ 734.861674] block_ioctl+0xe9/0x130 [ 734.865294] ? blkdev_fallocate+0x3f0/0x3f0 [ 734.869609] do_vfs_ioctl+0xcdb/0x12e0 [ 734.873490] ? lock_downgrade+0x720/0x720 [ 734.877623] ? check_preemption_disabled+0x41/0x280 [ 734.882618] ? ioctl_preallocate+0x200/0x200 [ 734.887009] ? __fget+0x356/0x510 [ 734.890456] ? do_dup2+0x450/0x450 [ 734.893988] ? vfs_write+0x393/0x540 [ 734.897685] ? fput+0x2b/0x190 [ 734.900865] ksys_ioctl+0x9b/0xc0 [ 734.904310] __x64_sys_ioctl+0x6f/0xb0 [ 734.908186] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 734.912772] do_syscall_64+0xf9/0x620 [ 734.916571] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 734.921750] RIP: 0033:0x7f03750e1089 [ 734.925446] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 734.944330] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 734.952018] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 734.959273] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 734.966529] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 734.973799] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 734.981047] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 734.992566] FAULT_INJECTION: forcing a failure. [ 734.992566] name failslab, interval 1, probability 0, space 0, times 0 [ 735.004100] block nbd3: shutting down sockets [ 735.009785] CPU: 0 PID: 8154 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 735.017662] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 735.026998] Call Trace: [ 735.029570] dump_stack+0x1fc/0x2ef [ 735.033178] should_fail.cold+0xa/0xf [ 735.036983] ? setup_fault_attr+0x200/0x200 [ 735.041289] ? lock_acquire+0x170/0x3c0 [ 735.045257] __should_failslab+0x115/0x180 [ 735.049490] should_failslab+0x5/0x10 [ 735.053273] kmem_cache_alloc_node+0x245/0x3b0 [ 735.057843] __alloc_skb+0x71/0x560 [ 735.061490] alloc_uevent_skb+0x7b/0x210 [ 735.065538] kobject_uevent_env+0xa90/0x1480 [ 735.069928] ? nbd_size_update+0x28a/0x660 [ 735.074145] ? queue_work_on+0x11a/0x1f0 [ 735.078187] nbd_start_device+0x811/0xd60 [ 735.082330] nbd_ioctl+0x62c/0xbe0 [ 735.085862] ? _copy_from_user+0xd2/0x130 [ 735.089994] ? nbd_disconnect_and_put+0x190/0x190 [ 735.094844] ? __lock_acquire+0x6de/0x3ff0 [ 735.099078] ? nbd_disconnect_and_put+0x190/0x190 [ 735.103920] blkdev_ioctl+0x5cb/0x1a80 [ 735.107791] ? blkpg_ioctl+0x9d0/0x9d0 [ 735.111667] ? get_pid_task+0xf4/0x190 [ 735.115541] ? mark_held_locks+0xf0/0xf0 [ 735.119592] ? proc_fail_nth_write+0x95/0x1d0 [ 735.124072] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 735.128986] ? __fdget_pos+0x26f/0x310 [ 735.132861] block_ioctl+0xe9/0x130 [ 735.136467] ? blkdev_fallocate+0x3f0/0x3f0 [ 735.140775] do_vfs_ioctl+0xcdb/0x12e0 [ 735.144645] ? lock_downgrade+0x720/0x720 [ 735.148783] ? check_preemption_disabled+0x41/0x280 [ 735.153794] ? ioctl_preallocate+0x200/0x200 [ 735.158204] ? __fget+0x356/0x510 [ 735.161659] ? do_dup2+0x450/0x450 [ 735.165195] ? vfs_write+0x393/0x540 [ 735.168892] ? fput+0x2b/0x190 [ 735.172067] ksys_ioctl+0x9b/0xc0 [ 735.175506] __x64_sys_ioctl+0x6f/0xb0 [ 735.179374] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 735.183950] do_syscall_64+0xf9/0x620 [ 735.187742] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 735.192912] RIP: 0033:0x7f03750e1089 [ 735.196606] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 executing program [ 735.215485] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 735.223170] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 735.230423] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 735.237681] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 735.244929] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 735.252175] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 735.262317] block nbd4: shutting down sockets executing program executing program [ 735.267650] block nbd2: Device being setup by another task [ 735.273354] block nbd0: Device being setup by another task [ 735.279782] block nbd0: Could not allocate knbd recv work queue. [ 735.283970] block nbd1: Device being setup by another task [ 735.287951] block nbd0: shutting down sockets [ 735.291781] block nbd1: Could not allocate knbd recv work queue. [ 735.302319] block nbd5: Device being setup by another task [ 735.310934] block nbd5: Could not allocate knbd recv work queue. executing program [ 735.318924] block nbd5: shutting down sockets [ 735.326546] FAULT_INJECTION: forcing a failure. [ 735.326546] name failslab, interval 1, probability 0, space 0, times 0 [ 735.329195] block nbd1: shutting down sockets [ 735.341234] CPU: 0 PID: 8177 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 735.349700] FAULT_INJECTION: forcing a failure. [ 735.349700] name failslab, interval 1, probability 0, space 0, times 0 [ 735.350398] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 735.350403] Call Trace: [ 735.350423] dump_stack+0x1fc/0x2ef [ 735.350446] should_fail.cold+0xa/0xf [ 735.380897] ? setup_fault_attr+0x200/0x200 [ 735.385210] ? lock_acquire+0x170/0x3c0 [ 735.389187] __should_failslab+0x115/0x180 [ 735.393413] should_failslab+0x5/0x10 [ 735.397203] __kmalloc_track_caller+0x2a6/0x3c0 [ 735.401866] ? kstrdup_const+0x53/0x80 [ 735.405752] kstrdup+0x36/0x70 [ 735.408942] kstrdup_const+0x53/0x80 [ 735.412647] __kernfs_new_node+0x9b/0x680 [ 735.416780] ? kfree+0xcc/0x210 [ 735.420055] ? kobject_add+0x10d/0x1c0 [ 735.423934] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 735.428680] ? nbd_start_device+0x1f2/0xd60 [ 735.432993] ? nbd_ioctl+0x62c/0xbe0 [ 735.436692] ? blkdev_ioctl+0x5cb/0x1a80 [ 735.440742] ? do_vfs_ioctl+0xcdb/0x12e0 [ 735.444794] ? __x64_sys_ioctl+0x6f/0xb0 [ 735.448848] ? do_syscall_64+0xf9/0x620 [ 735.452819] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 735.458175] ? debug_check_no_obj_freed+0x201/0x490 [ 735.463195] kernfs_create_dir_ns+0x9e/0x230 [ 735.467600] sysfs_create_dir_ns+0x127/0x280 [ 735.471996] ? sysfs_create_mount_point+0xb0/0xb0 [ 735.476830] ? mark_held_locks+0xa6/0xf0 [ 735.480877] ? kfree+0x110/0x210 [ 735.484236] ? kfree_const+0x51/0x60 [ 735.487947] kobject_add_internal+0x2a5/0x9c0 [ 735.492438] kobject_add+0x150/0x1c0 [ 735.496140] ? kset_create_and_add+0x1a0/0x1a0 [ 735.500710] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 735.505368] ? lock_downgrade+0x720/0x720 [ 735.509513] ? kernfs_put.part.0+0x225/0x590 [ 735.513916] blk_mq_register_hctx+0x23c/0x2c0 [ 735.518401] blk_mq_sysfs_register+0x143/0x1c0 [ 735.522983] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 735.527993] ? workqueue_sysfs_register+0x391/0x3e0 [ 735.533001] ? blk_mq_init_queue+0xa0/0xa0 [ 735.537234] nbd_start_device+0x1f2/0xd60 [ 735.541370] ? security_capable+0x8f/0xc0 [ 735.545521] nbd_ioctl+0x62c/0xbe0 [ 735.549053] ? _copy_from_user+0xd2/0x130 [ 735.553193] ? nbd_disconnect_and_put+0x190/0x190 [ 735.558042] ? __lock_acquire+0x6de/0x3ff0 [ 735.562273] ? nbd_disconnect_and_put+0x190/0x190 [ 735.567103] blkdev_ioctl+0x5cb/0x1a80 [ 735.570979] ? blkpg_ioctl+0x9d0/0x9d0 [ 735.574859] ? get_pid_task+0xf4/0x190 [ 735.578739] ? mark_held_locks+0xf0/0xf0 [ 735.582789] ? proc_fail_nth_write+0x95/0x1d0 [ 735.587279] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 735.592205] ? __fdget_pos+0x26f/0x310 [ 735.596090] block_ioctl+0xe9/0x130 [ 735.599708] ? blkdev_fallocate+0x3f0/0x3f0 [ 735.604019] do_vfs_ioctl+0xcdb/0x12e0 [ 735.607898] ? lock_downgrade+0x720/0x720 [ 735.612034] ? check_preemption_disabled+0x41/0x280 [ 735.617041] ? ioctl_preallocate+0x200/0x200 [ 735.621442] ? __fget+0x356/0x510 [ 735.624889] ? do_dup2+0x450/0x450 [ 735.628417] ? vfs_write+0x393/0x540 [ 735.632119] ? fput+0x2b/0x190 [ 735.635305] ksys_ioctl+0x9b/0xc0 [ 735.638752] __x64_sys_ioctl+0x6f/0xb0 [ 735.642642] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 735.647222] do_syscall_64+0xf9/0x620 [ 735.651013] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 735.656188] RIP: 0033:0x7f03750e1089 executing program [ 735.659897] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 735.678782] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 735.686475] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 735.693735] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 735.700995] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 735.708248] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 735.715504] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 735.722814] CPU: 1 PID: 8191 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 735.725868] kobject_add_internal failed for cpu0 (error: -12 parent: 0) [ 735.730694] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 735.746761] Call Trace: [ 735.749350] dump_stack+0x1fc/0x2ef [ 735.752996] should_fail.cold+0xa/0xf [ 735.756806] ? setup_fault_attr+0x200/0x200 [ 735.761135] ? lock_acquire+0x170/0x3c0 [ 735.765115] __should_failslab+0x115/0x180 [ 735.769352] should_failslab+0x5/0x10 [ 735.773155] kmem_cache_alloc_node+0x245/0x3b0 [ 735.777727] __alloc_skb+0x71/0x560 [ 735.781339] alloc_uevent_skb+0x7b/0x210 [ 735.785384] kobject_uevent_env+0xa90/0x1480 [ 735.789790] ? nbd_size_update+0x28a/0x660 [ 735.794011] ? queue_work_on+0x11a/0x1f0 [ 735.798057] nbd_start_device+0x811/0xd60 [ 735.802279] nbd_ioctl+0x62c/0xbe0 [ 735.805804] ? _copy_from_user+0xd2/0x130 [ 735.809949] ? nbd_disconnect_and_put+0x190/0x190 [ 735.814788] ? __lock_acquire+0x6de/0x3ff0 [ 735.819022] ? nbd_disconnect_and_put+0x190/0x190 [ 735.823861] blkdev_ioctl+0x5cb/0x1a80 [ 735.827742] ? blkpg_ioctl+0x9d0/0x9d0 [ 735.831614] ? get_pid_task+0xf4/0x190 [ 735.835484] ? mark_held_locks+0xf0/0xf0 [ 735.839528] ? proc_fail_nth_write+0x95/0x1d0 [ 735.844009] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 735.848922] ? __fdget_pos+0x26f/0x310 [ 735.852804] block_ioctl+0xe9/0x130 [ 735.856410] ? blkdev_fallocate+0x3f0/0x3f0 [ 735.860714] do_vfs_ioctl+0xcdb/0x12e0 [ 735.864595] ? lock_downgrade+0x720/0x720 [ 735.868732] ? check_preemption_disabled+0x41/0x280 [ 735.873731] ? ioctl_preallocate+0x200/0x200 [ 735.878121] ? __fget+0x356/0x510 [ 735.881554] ? do_dup2+0x450/0x450 [ 735.885070] ? vfs_write+0x393/0x540 [ 735.888765] ? fput+0x2b/0x190 [ 735.891945] ksys_ioctl+0x9b/0xc0 [ 735.895384] __x64_sys_ioctl+0x6f/0xb0 [ 735.899252] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 735.903813] do_syscall_64+0xf9/0x620 [ 735.907596] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 735.912769] RIP: 0033:0x7f03750e1089 [ 735.916463] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 735.935348] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 735.943044] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 735.950295] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 735.957543] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 735.964787] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc executing program executing program [ 735.972035] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 735.981130] block nbd3: shutting down sockets [ 735.981590] block nbd2: shutting down sockets [ 736.014608] block nbd4: Device being setup by another task [ 736.019628] block nbd0: Device being setup by another task [ 736.020299] block nbd5: Device being setup by another task [ 736.026083] block nbd1: Device being setup by another task [ 736.031745] block nbd4: Could not allocate knbd recv work queue. [ 736.044009] block nbd0: Could not allocate knbd recv work queue. [ 736.045038] block nbd1: Could not allocate knbd recv work queue. [ 736.051386] block nbd0: shutting down sockets [ 736.062673] block nbd5: Could not allocate knbd recv work queue. [ 736.066217] block nbd1: shutting down sockets executing program executing program executing program executing program [ 736.070503] block nbd5: shutting down sockets [ 736.082429] block nbd4: shutting down sockets [ 736.094596] FAULT_INJECTION: forcing a failure. [ 736.094596] name failslab, interval 1, probability 0, space 0, times 0 [ 736.105951] CPU: 0 PID: 8218 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 736.113823] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 736.123218] Call Trace: [ 736.125808] dump_stack+0x1fc/0x2ef [ 736.129422] should_fail.cold+0xa/0xf [ 736.133215] ? setup_fault_attr+0x200/0x200 [ 736.137533] ? lock_acquire+0x170/0x3c0 [ 736.141494] __should_failslab+0x115/0x180 [ 736.145720] should_failslab+0x5/0x10 [ 736.149503] kmem_cache_alloc_node_trace+0x244/0x3b0 [ 736.154589] __kmalloc_node_track_caller+0x38/0x70 [ 736.159501] __alloc_skb+0xae/0x560 [ 736.163122] alloc_uevent_skb+0x7b/0x210 [ 736.167174] kobject_uevent_env+0xa90/0x1480 [ 736.171564] ? nbd_size_update+0x28a/0x660 [ 736.175781] ? queue_work_on+0x11a/0x1f0 [ 736.179825] nbd_start_device+0x811/0xd60 [ 736.183957] nbd_ioctl+0x62c/0xbe0 [ 736.187487] ? _copy_from_user+0xd2/0x130 [ 736.191620] ? nbd_disconnect_and_put+0x190/0x190 [ 736.196445] ? __lock_acquire+0x6de/0x3ff0 [ 736.200667] ? nbd_disconnect_and_put+0x190/0x190 [ 736.205501] blkdev_ioctl+0x5cb/0x1a80 [ 736.209370] ? blkpg_ioctl+0x9d0/0x9d0 [ 736.213242] ? get_pid_task+0xf4/0x190 [ 736.217109] ? mark_held_locks+0xf0/0xf0 [ 736.221149] ? proc_fail_nth_write+0x95/0x1d0 [ 736.225623] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 736.230535] ? __fdget_pos+0x26f/0x310 [ 736.234410] block_ioctl+0xe9/0x130 [ 736.238014] ? blkdev_fallocate+0x3f0/0x3f0 [ 736.242315] do_vfs_ioctl+0xcdb/0x12e0 [ 736.246183] ? lock_downgrade+0x720/0x720 [ 736.250310] ? check_preemption_disabled+0x41/0x280 [ 736.255306] ? ioctl_preallocate+0x200/0x200 [ 736.259695] ? __fget+0x356/0x510 [ 736.263128] ? do_dup2+0x450/0x450 [ 736.266657] ? vfs_write+0x393/0x540 [ 736.270359] ? fput+0x2b/0x190 [ 736.273540] ksys_ioctl+0x9b/0xc0 [ 736.276976] __x64_sys_ioctl+0x6f/0xb0 [ 736.280853] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 736.285424] do_syscall_64+0xf9/0x620 [ 736.289209] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 736.294382] RIP: 0033:0x7f03750e1089 [ 736.298076] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 736.316963] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 736.324651] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 736.331903] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 736.339157] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 736.346408] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 736.353666] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 736.373784] block nbd2: Device being setup by another task [ 736.380242] FAULT_INJECTION: forcing a failure. [ 736.380242] name failslab, interval 1, probability 0, space 0, times 0 [ 736.391815] CPU: 1 PID: 8219 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 736.399695] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 736.409045] Call Trace: [ 736.411649] dump_stack+0x1fc/0x2ef [ 736.415272] should_fail.cold+0xa/0xf [ 736.419061] ? setup_fault_attr+0x200/0x200 [ 736.423367] ? lock_acquire+0x170/0x3c0 [ 736.427334] __should_failslab+0x115/0x180 [ 736.431555] should_failslab+0x5/0x10 [ 736.435343] kmem_cache_alloc_trace+0x284/0x380 [ 736.440012] ? wait_for_completion_io+0x10/0x10 [ 736.444667] ? kobj_ns_initial+0x90/0x90 [ 736.448810] call_usermodehelper_setup+0x84/0x300 [ 736.453656] kobject_uevent_env+0xe83/0x1480 [ 736.458057] ? nbd_size_update+0x28a/0x660 [ 736.462274] ? queue_work_on+0x11a/0x1f0 [ 736.466319] nbd_start_device+0x811/0xd60 [ 736.470453] nbd_ioctl+0x62c/0xbe0 [ 736.473975] ? _copy_from_user+0xd2/0x130 executing program [ 736.477558] block nbd3: shutting down sockets [ 736.478112] ? nbd_disconnect_and_put+0x190/0x190 [ 736.478135] ? __lock_acquire+0x6de/0x3ff0 [ 736.478152] ? nbd_disconnect_and_put+0x190/0x190 [ 736.478166] blkdev_ioctl+0x5cb/0x1a80 [ 736.478179] ? blkpg_ioctl+0x9d0/0x9d0 [ 736.504254] ? get_pid_task+0xf4/0x190 [ 736.508141] ? mark_held_locks+0xf0/0xf0 [ 736.512194] ? proc_fail_nth_write+0x95/0x1d0 [ 736.516678] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 736.521595] ? __fdget_pos+0x26f/0x310 [ 736.525482] block_ioctl+0xe9/0x130 [ 736.529095] ? blkdev_fallocate+0x3f0/0x3f0 [ 736.533406] do_vfs_ioctl+0xcdb/0x12e0 [ 736.537285] ? lock_downgrade+0x720/0x720 [ 736.541422] ? check_preemption_disabled+0x41/0x280 [ 736.546419] ? ioctl_preallocate+0x200/0x200 [ 736.550814] ? __fget+0x356/0x510 [ 736.554247] ? do_dup2+0x450/0x450 [ 736.557775] ? vfs_write+0x393/0x540 [ 736.561478] ? fput+0x2b/0x190 [ 736.564658] ksys_ioctl+0x9b/0xc0 [ 736.568096] __x64_sys_ioctl+0x6f/0xb0 [ 736.571963] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 736.576540] do_syscall_64+0xf9/0x620 [ 736.580332] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 736.585502] RIP: 0033:0x7f03750e1089 [ 736.589194] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 736.608162] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 736.615853] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 executing program [ 736.623103] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 736.630359] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 736.637620] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 736.644868] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 736.652440] block nbd2: shutting down sockets [ 736.663606] block nbd5: Device being setup by another task [ 736.667652] block nbd4: Device being setup by another task executing program [ 736.669337] block nbd1: Device being setup by another task [ 736.675201] block nbd4: Could not allocate knbd recv work queue. [ 736.680557] block nbd0: Device being setup by another task [ 736.681289] block nbd0: Could not allocate knbd recv work queue. [ 736.695238] block nbd4: shutting down sockets [ 736.700831] block nbd5: Could not allocate knbd recv work queue. [ 736.708341] block nbd1: Could not allocate knbd recv work queue. [ 736.712347] block nbd5: shutting down sockets [ 736.722112] block nbd0: shutting down sockets executing program executing program executing program [ 736.722763] block nbd1: shutting down sockets [ 736.731333] block nbd3: Device being setup by another task [ 736.765057] FAULT_INJECTION: forcing a failure. [ 736.765057] name failslab, interval 1, probability 0, space 0, times 0 [ 736.776372] CPU: 0 PID: 8244 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 736.784248] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 736.790876] FAULT_INJECTION: forcing a failure. [ 736.790876] name failslab, interval 1, probability 0, space 0, times 0 [ 736.793590] Call Trace: [ 736.793610] dump_stack+0x1fc/0x2ef [ 736.793629] should_fail.cold+0xa/0xf [ 736.793647] ? setup_fault_attr+0x200/0x200 [ 736.793661] ? lock_acquire+0x170/0x3c0 [ 736.793679] __should_failslab+0x115/0x180 [ 736.793699] should_failslab+0x5/0x10 [ 736.831048] __kmalloc_track_caller+0x2a6/0x3c0 [ 736.835709] ? kstrdup_const+0x53/0x80 [ 736.839598] kstrdup+0x36/0x70 [ 736.842799] kstrdup_const+0x53/0x80 [ 736.846510] __kernfs_new_node+0x9b/0x680 [ 736.850661] ? kfree+0xcc/0x210 [ 736.853937] ? kobject_add+0x10d/0x1c0 [ 736.857814] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 736.862558] ? nbd_start_device+0x1f2/0xd60 [ 736.866870] ? nbd_ioctl+0x62c/0xbe0 [ 736.870575] ? blkdev_ioctl+0x5cb/0x1a80 [ 736.874627] ? do_vfs_ioctl+0xcdb/0x12e0 [ 736.878674] ? __x64_sys_ioctl+0x6f/0xb0 [ 736.882724] ? do_syscall_64+0xf9/0x620 [ 736.886687] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 736.892051] ? debug_check_no_obj_freed+0x201/0x490 [ 736.897065] kernfs_create_dir_ns+0x9e/0x230 [ 736.901462] sysfs_create_dir_ns+0x127/0x280 [ 736.905861] ? sysfs_create_mount_point+0xb0/0xb0 [ 736.910714] ? mark_held_locks+0xa6/0xf0 [ 736.914769] ? kfree+0x110/0x210 [ 736.918127] ? kfree_const+0x51/0x60 [ 736.921835] kobject_add_internal+0x2a5/0x9c0 [ 736.926324] kobject_add+0x150/0x1c0 [ 736.930030] ? kset_create_and_add+0x1a0/0x1a0 [ 736.934610] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 736.939279] ? lock_downgrade+0x720/0x720 [ 736.943423] ? kernfs_put.part.0+0x225/0x590 [ 736.945807] block nbd4: Could not allocate knbd recv work queue. [ 736.947828] blk_mq_register_hctx+0x23c/0x2c0 [ 736.947846] blk_mq_sysfs_register+0x143/0x1c0 [ 736.947861] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 736.960152] block nbd4: shutting down sockets [ 736.963032] ? workqueue_sysfs_register+0x391/0x3e0 executing program [ 736.963054] ? blk_mq_init_queue+0xa0/0xa0 [ 736.963079] nbd_start_device+0x1f2/0xd60 [ 736.963093] ? security_capable+0x8f/0xc0 [ 736.963111] nbd_ioctl+0x62c/0xbe0 [ 736.993580] ? _copy_from_user+0xd2/0x130 [ 736.997730] ? nbd_disconnect_and_put+0x190/0x190 [ 737.002582] ? __lock_acquire+0x6de/0x3ff0 [ 737.006813] ? nbd_disconnect_and_put+0x190/0x190 [ 737.011650] blkdev_ioctl+0x5cb/0x1a80 [ 737.015525] ? blkpg_ioctl+0x9d0/0x9d0 [ 737.019448] ? get_pid_task+0xf4/0x190 [ 737.023327] ? mark_held_locks+0xf0/0xf0 [ 737.027387] ? proc_fail_nth_write+0x95/0x1d0 [ 737.031871] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 737.036793] ? __fdget_pos+0x26f/0x310 [ 737.040678] block_ioctl+0xe9/0x130 [ 737.044295] ? blkdev_fallocate+0x3f0/0x3f0 [ 737.048610] do_vfs_ioctl+0xcdb/0x12e0 [ 737.052494] ? lock_downgrade+0x720/0x720 [ 737.056634] ? check_preemption_disabled+0x41/0x280 [ 737.061638] ? ioctl_preallocate+0x200/0x200 [ 737.066057] ? __fget+0x356/0x510 [ 737.069498] ? do_dup2+0x450/0x450 [ 737.073028] ? vfs_write+0x393/0x540 [ 737.076737] ? fput+0x2b/0x190 [ 737.079922] ksys_ioctl+0x9b/0xc0 [ 737.083375] __x64_sys_ioctl+0x6f/0xb0 [ 737.087252] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 737.091829] do_syscall_64+0xf9/0x620 [ 737.095628] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 737.100925] RIP: 0033:0x7f03750e1089 [ 737.104647] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 737.123550] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 737.131249] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 737.138507] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 737.145766] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 737.153026] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 737.160289] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 737.167578] CPU: 1 PID: 8256 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 737.175469] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 737.184825] Call Trace: [ 737.187420] dump_stack+0x1fc/0x2ef [ 737.191054] should_fail.cold+0xa/0xf [ 737.194857] ? setup_fault_attr+0x200/0x200 [ 737.199178] ? lock_acquire+0x170/0x3c0 [ 737.203157] __should_failslab+0x115/0x180 [ 737.204249] kobject_add_internal failed for cpu1 (error: -12 parent: 0) [ 737.207390] should_failslab+0x5/0x10 [ 737.217905] __kmalloc+0x2ab/0x3c0 [ 737.219745] block nbd3: shutting down sockets [ 737.221448] ? kobject_get_path+0xbf/0x240 [ 737.230169] kobject_get_path+0xbf/0x240 [ 737.234240] kobject_uevent_env+0x25c/0x1480 [ 737.238650] ? nbd_size_update+0x28a/0x660 [ 737.242871] ? queue_work_on+0x11a/0x1f0 [ 737.246928] nbd_start_device+0x811/0xd60 [ 737.251089] nbd_ioctl+0x62c/0xbe0 [ 737.254642] ? _copy_from_user+0xd2/0x130 [ 737.258786] ? nbd_disconnect_and_put+0x190/0x190 [ 737.263623] ? __lock_acquire+0x6de/0x3ff0 [ 737.267840] ? nbd_disconnect_and_put+0x190/0x190 [ 737.272724] blkdev_ioctl+0x5cb/0x1a80 [ 737.276597] ? blkpg_ioctl+0x9d0/0x9d0 [ 737.280467] ? get_pid_task+0xf4/0x190 [ 737.284337] ? mark_held_locks+0xf0/0xf0 [ 737.288489] ? proc_fail_nth_write+0x95/0x1d0 [ 737.292978] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 737.297982] ? __fdget_pos+0x26f/0x310 [ 737.301857] block_ioctl+0xe9/0x130 [ 737.305468] ? blkdev_fallocate+0x3f0/0x3f0 [ 737.309776] do_vfs_ioctl+0xcdb/0x12e0 [ 737.313647] ? lock_downgrade+0x720/0x720 [ 737.317789] ? check_preemption_disabled+0x41/0x280 [ 737.322798] ? ioctl_preallocate+0x200/0x200 [ 737.327197] ? __fget+0x356/0x510 [ 737.330636] ? do_dup2+0x450/0x450 [ 737.334156] ? vfs_write+0x393/0x540 [ 737.337858] ? fput+0x2b/0x190 [ 737.341037] ksys_ioctl+0x9b/0xc0 [ 737.344472] __x64_sys_ioctl+0x6f/0xb0 [ 737.348339] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 737.352902] do_syscall_64+0xf9/0x620 [ 737.356688] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 737.361857] RIP: 0033:0x7f03750e1089 [ 737.365550] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 737.384429] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 737.392114] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 737.399362] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 737.406609] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 737.413856] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 737.421128] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 executing program [ 737.431113] FAULT_INJECTION: forcing a failure. [ 737.431113] name failslab, interval 1, probability 0, space 0, times 0 [ 737.442603] block nbd1: Could not allocate knbd recv work queue. [ 737.447707] block nbd5: shutting down sockets [ 737.449318] block nbd0: Could not allocate knbd recv work queue. [ 737.458132] CPU: 0 PID: 8246 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 737.461277] block nbd1: shutting down sockets [ 737.467447] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 executing program executing program [ 737.467452] Call Trace: [ 737.467472] dump_stack+0x1fc/0x2ef [ 737.467490] should_fail.cold+0xa/0xf [ 737.467507] ? setup_fault_attr+0x200/0x200 [ 737.467520] ? lock_acquire+0x170/0x3c0 [ 737.467539] __should_failslab+0x115/0x180 [ 737.467554] should_failslab+0x5/0x10 [ 737.467566] kmem_cache_alloc+0x277/0x370 [ 737.467582] __d_alloc+0x2b/0xa10 [ 737.467595] ? __bpf_address_lookup+0x330/0x330 [ 737.467610] ? check_preemption_disabled+0x41/0x280 [ 737.467626] d_alloc+0x4a/0x230 [ 737.467643] d_alloc_parallel+0xeb/0x19e0 [ 737.467667] ? mark_held_locks+0xf0/0xf0 [ 737.467683] ? __d_lookup_rcu+0x6b0/0x6b0 [ 737.467701] ? mark_held_locks+0xf0/0xf0 [ 737.467715] ? __lockdep_init_map+0x100/0x5a0 [ 737.467729] ? __lockdep_init_map+0x100/0x5a0 [ 737.467748] __lookup_slow+0x18d/0x4a0 [ 737.467761] ? check_preemption_disabled+0x41/0x280 [ 737.467775] ? follow_dotdot_rcu+0x1040/0x1040 [ 737.467792] ? __d_lookup+0x411/0x710 [ 737.474144] block nbd0: shutting down sockets [ 737.481615] ? d_lookup+0x18e/0x250 [ 737.481638] lookup_one_len+0x163/0x190 [ 737.481654] ? try_lookup_one_len+0x180/0x180 [ 737.587157] start_creating+0xc9/0x220 [ 737.591037] __debugfs_create_file+0x5e/0x480 [ 737.595535] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 737.600714] ? kvm_clock_get_cycles+0x14/0x30 [ 737.605192] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 737.610033] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 737.614951] ? init_srcu_struct_fields+0xca6/0x1190 [ 737.619960] ? srcu_reschedule+0x120/0x120 [ 737.624183] ? __raw_spin_lock_init+0x28/0x100 [ 737.628761] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 737.633568] ? nbd_clear_que+0x160/0x160 [ 737.637622] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 737.642638] ? workqueue_sysfs_register+0x391/0x3e0 [ 737.647641] ? blk_mq_init_queue+0xa0/0xa0 [ 737.651858] ? apparmor_sb_mount+0x970/0x970 [ 737.656249] nbd_start_device+0x1f2/0xd60 [ 737.660380] ? security_capable+0x8f/0xc0 [ 737.664520] nbd_ioctl+0x62c/0xbe0 [ 737.668043] ? _copy_from_user+0xd2/0x130 [ 737.672172] ? nbd_disconnect_and_put+0x190/0x190 [ 737.677004] ? __lock_acquire+0x6de/0x3ff0 [ 737.681239] ? nbd_disconnect_and_put+0x190/0x190 [ 737.686064] blkdev_ioctl+0x5cb/0x1a80 [ 737.689930] ? blkpg_ioctl+0x9d0/0x9d0 [ 737.693798] ? get_pid_task+0xf4/0x190 [ 737.697670] ? mark_held_locks+0xf0/0xf0 [ 737.701710] ? proc_fail_nth_write+0x95/0x1d0 [ 737.706183] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 737.711094] ? __fdget_pos+0x26f/0x310 [ 737.714964] block_ioctl+0xe9/0x130 [ 737.718579] ? blkdev_fallocate+0x3f0/0x3f0 [ 737.722911] do_vfs_ioctl+0xcdb/0x12e0 [ 737.726784] ? lock_downgrade+0x720/0x720 [ 737.730912] ? check_preemption_disabled+0x41/0x280 [ 737.735919] ? ioctl_preallocate+0x200/0x200 [ 737.740308] ? __fget+0x356/0x510 [ 737.743745] ? do_dup2+0x450/0x450 [ 737.747263] ? vfs_write+0x393/0x540 [ 737.750955] ? fput+0x2b/0x190 [ 737.754135] ksys_ioctl+0x9b/0xc0 [ 737.757570] __x64_sys_ioctl+0x6f/0xb0 [ 737.761438] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 737.766094] do_syscall_64+0xf9/0x620 [ 737.769940] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 737.775109] RIP: 0033:0x7f03750e1089 [ 737.778800] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 737.797680] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 737.805370] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 737.812620] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 737.819872] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 executing program executing program [ 737.827128] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 737.834377] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 737.852650] block nbd2: shutting down sockets [ 737.884123] block nbd4: Device being setup by another task [ 737.903395] block nbd3: Device being setup by another task [ 737.909836] FAULT_INJECTION: forcing a failure. [ 737.909836] name failslab, interval 1, probability 0, space 0, times 0 [ 737.921206] CPU: 0 PID: 8275 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 737.923513] block nbd0: Device being setup by another task [ 737.929067] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 737.929075] Call Trace: [ 737.934721] block nbd5: Device being setup by another task [ 737.944027] dump_stack+0x1fc/0x2ef [ 737.944047] should_fail.cold+0xa/0xf [ 737.944064] ? setup_fault_attr+0x200/0x200 [ 737.947788] block nbd0: Could not allocate knbd recv work queue. [ 737.952232] ? lock_acquire+0x170/0x3c0 [ 737.963158] block nbd5: Could not allocate knbd recv work queue. [ 737.963922] __should_failslab+0x115/0x180 [ 737.963939] should_failslab+0x5/0x10 [ 737.963954] kmem_cache_alloc_node_trace+0x244/0x3b0 [ 737.963971] __kmalloc_node_track_caller+0x38/0x70 [ 737.974055] block nbd5: shutting down sockets [ 737.980264] __alloc_skb+0xae/0x560 [ 737.980285] alloc_uevent_skb+0x7b/0x210 [ 737.987982] block nbd0: shutting down sockets [ 737.988281] kobject_uevent_env+0xa90/0x1480 [ 738.019243] ? nbd_size_update+0x28a/0x660 [ 738.023459] ? queue_work_on+0x11a/0x1f0 [ 738.027514] nbd_start_device+0x811/0xd60 [ 738.031660] nbd_ioctl+0x62c/0xbe0 [ 738.035195] ? _copy_from_user+0xd2/0x130 [ 738.039332] ? nbd_disconnect_and_put+0x190/0x190 [ 738.044196] ? __lock_acquire+0x6de/0x3ff0 [ 738.048420] ? nbd_disconnect_and_put+0x190/0x190 [ 738.053242] blkdev_ioctl+0x5cb/0x1a80 [ 738.057111] ? blkpg_ioctl+0x9d0/0x9d0 [ 738.060978] ? get_pid_task+0xf4/0x190 [ 738.064845] ? mark_held_locks+0xf0/0xf0 [ 738.068886] ? proc_fail_nth_write+0x95/0x1d0 [ 738.073363] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 738.078274] ? __fdget_pos+0x26f/0x310 [ 738.082142] block_ioctl+0xe9/0x130 [ 738.085751] ? blkdev_fallocate+0x3f0/0x3f0 [ 738.090057] do_vfs_ioctl+0xcdb/0x12e0 [ 738.093936] ? lock_downgrade+0x720/0x720 [ 738.098072] ? check_preemption_disabled+0x41/0x280 [ 738.103075] ? ioctl_preallocate+0x200/0x200 [ 738.107480] ? __fget+0x356/0x510 [ 738.110926] ? do_dup2+0x450/0x450 [ 738.114445] ? vfs_write+0x393/0x540 [ 738.118140] ? fput+0x2b/0x190 [ 738.121325] ksys_ioctl+0x9b/0xc0 [ 738.124762] __x64_sys_ioctl+0x6f/0xb0 [ 738.128628] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 738.133194] do_syscall_64+0xf9/0x620 [ 738.137094] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 738.142273] RIP: 0033:0x7f03750e1089 [ 738.145974] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 738.164859] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 738.172547] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 738.179795] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 738.187049] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 738.194307] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 738.201559] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 738.211208] FAULT_INJECTION: forcing a failure. [ 738.211208] name failslab, interval 1, probability 0, space 0, times 0 [ 738.212152] block nbd3: shutting down sockets [ 738.229460] FAULT_INJECTION: forcing a failure. executing program executing program [ 738.229460] name failslab, interval 1, probability 0, space 0, times 0 [ 738.230461] CPU: 0 PID: 8270 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 738.248516] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 738.257870] Call Trace: [ 738.260456] dump_stack+0x1fc/0x2ef [ 738.264085] should_fail.cold+0xa/0xf [ 738.267885] ? setup_fault_attr+0x200/0x200 [ 738.272197] ? lock_acquire+0x170/0x3c0 [ 738.276165] __should_failslab+0x115/0x180 [ 738.280393] should_failslab+0x5/0x10 [ 738.284182] __kmalloc_track_caller+0x2a6/0x3c0 [ 738.288841] ? kvasprintf_const+0x60/0x190 [ 738.293064] kvasprintf+0xb5/0x150 [ 738.296591] ? bust_spinlocks+0xe0/0xe0 [ 738.300554] ? mark_held_locks+0xa6/0xf0 [ 738.304611] kvasprintf_const+0x60/0x190 [ 738.308668] kobject_set_name_vargs+0x56/0x150 [ 738.313257] kobject_add+0x10d/0x1c0 [ 738.316977] ? kset_create_and_add+0x1a0/0x1a0 [ 738.321550] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 738.326213] ? lock_downgrade+0x720/0x720 [ 738.330351] ? kernfs_put.part.0+0x225/0x590 [ 738.334752] blk_mq_register_hctx+0x23c/0x2c0 [ 738.339241] blk_mq_sysfs_register+0x143/0x1c0 [ 738.343815] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 738.348827] ? workqueue_sysfs_register+0x391/0x3e0 [ 738.353838] ? blk_mq_init_queue+0xa0/0xa0 [ 738.358071] nbd_start_device+0x1f2/0xd60 [ 738.362209] ? security_capable+0x8f/0xc0 [ 738.366441] nbd_ioctl+0x62c/0xbe0 [ 738.369983] ? _copy_from_user+0xd2/0x130 [ 738.374127] ? nbd_disconnect_and_put+0x190/0x190 [ 738.378968] ? __lock_acquire+0x6de/0x3ff0 [ 738.383196] ? nbd_disconnect_and_put+0x190/0x190 [ 738.388028] blkdev_ioctl+0x5cb/0x1a80 [ 738.391903] ? blkpg_ioctl+0x9d0/0x9d0 [ 738.395779] ? get_pid_task+0xf4/0x190 [ 738.399656] ? mark_held_locks+0xf0/0xf0 [ 738.403703] ? proc_fail_nth_write+0x95/0x1d0 [ 738.408191] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 738.413108] ? __fdget_pos+0x26f/0x310 [ 738.416989] block_ioctl+0xe9/0x130 [ 738.420602] ? blkdev_fallocate+0x3f0/0x3f0 [ 738.424939] do_vfs_ioctl+0xcdb/0x12e0 [ 738.428819] ? lock_downgrade+0x720/0x720 [ 738.432965] ? check_preemption_disabled+0x41/0x280 [ 738.437972] ? ioctl_preallocate+0x200/0x200 [ 738.442372] ? __fget+0x356/0x510 [ 738.445814] ? do_dup2+0x450/0x450 [ 738.449344] ? vfs_write+0x393/0x540 [ 738.453048] ? fput+0x2b/0x190 [ 738.456232] ksys_ioctl+0x9b/0xc0 [ 738.459673] __x64_sys_ioctl+0x6f/0xb0 [ 738.463548] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 738.468116] do_syscall_64+0xf9/0x620 [ 738.471911] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 738.477087] RIP: 0033:0x7f03750e1089 [ 738.480790] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 738.499676] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 738.507371] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 738.514636] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 738.521893] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 738.529166] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 738.536423] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 738.543701] CPU: 1 PID: 8295 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 738.545714] kobject: can not set name properly! [ 738.551579] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 738.551584] Call Trace: [ 738.551604] dump_stack+0x1fc/0x2ef [ 738.551623] should_fail.cold+0xa/0xf [ 738.551640] ? setup_fault_attr+0x200/0x200 [ 738.551653] ? lock_acquire+0x170/0x3c0 executing program executing program [ 738.551671] __should_failslab+0x115/0x180 [ 738.588097] should_failslab+0x5/0x10 [ 738.591909] kmem_cache_alloc_node_trace+0x244/0x3b0 [ 738.594362] block nbd2: Could not allocate knbd recv work queue. [ 738.597019] __kmalloc_node_track_caller+0x38/0x70 [ 738.597038] __alloc_skb+0xae/0x560 [ 738.597059] alloc_uevent_skb+0x7b/0x210 [ 738.597075] kobject_uevent_env+0xa90/0x1480 [ 738.604816] block nbd2: shutting down sockets [ 738.608121] ? nbd_size_update+0x28a/0x660 [ 738.608137] ? queue_work_on+0x11a/0x1f0 [ 738.608153] nbd_start_device+0x811/0xd60 [ 738.608174] nbd_ioctl+0x62c/0xbe0 [ 738.640603] ? _copy_from_user+0xd2/0x130 [ 738.644744] ? nbd_disconnect_and_put+0x190/0x190 [ 738.649592] ? __lock_acquire+0x6de/0x3ff0 [ 738.653811] ? nbd_disconnect_and_put+0x190/0x190 [ 738.658635] blkdev_ioctl+0x5cb/0x1a80 [ 738.662509] ? blkpg_ioctl+0x9d0/0x9d0 [ 738.666387] ? get_pid_task+0xf4/0x190 [ 738.670265] ? mark_held_locks+0xf0/0xf0 [ 738.674319] ? proc_fail_nth_write+0x95/0x1d0 [ 738.678793] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 738.683708] ? __fdget_pos+0x26f/0x310 [ 738.687588] block_ioctl+0xe9/0x130 [ 738.691194] ? blkdev_fallocate+0x3f0/0x3f0 [ 738.695510] do_vfs_ioctl+0xcdb/0x12e0 [ 738.699393] ? lock_downgrade+0x720/0x720 [ 738.703532] ? check_preemption_disabled+0x41/0x280 [ 738.708530] ? ioctl_preallocate+0x200/0x200 [ 738.712926] ? __fget+0x356/0x510 [ 738.716359] ? do_dup2+0x450/0x450 [ 738.719878] ? vfs_write+0x393/0x540 [ 738.723573] ? fput+0x2b/0x190 [ 738.726751] ksys_ioctl+0x9b/0xc0 [ 738.730193] __x64_sys_ioctl+0x6f/0xb0 [ 738.734075] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 738.738641] do_syscall_64+0xf9/0x620 [ 738.742434] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 738.747608] RIP: 0033:0x7f03750e1089 [ 738.751299] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 738.770186] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 738.777891] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 executing program executing program [ 738.785162] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 738.792413] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 738.799661] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 738.806910] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 738.816092] block nbd1: shutting down sockets [ 738.823985] block nbd4: shutting down sockets executing program [ 738.893357] block nbd3: Device being setup by another task [ 738.893550] block nbd2: Device being setup by another task [ 738.899316] block nbd3: Could not allocate knbd recv work queue. [ 738.908753] block nbd0: Device being setup by another task [ 738.914075] block nbd3: shutting down sockets [ 738.916613] block nbd5: Device being setup by another task [ 738.927163] block nbd0: Could not allocate knbd recv work queue. [ 738.934817] block nbd0: shutting down sockets executing program [ 738.938549] block nbd5: Could not allocate knbd recv work queue. [ 738.943678] FAULT_INJECTION: forcing a failure. [ 738.943678] name failslab, interval 1, probability 0, space 0, times 0 [ 738.949221] block nbd5: shutting down sockets [ 738.957095] CPU: 1 PID: 8331 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 738.969210] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 738.978559] Call Trace: [ 738.981135] dump_stack+0x1fc/0x2ef [ 738.984744] should_fail.cold+0xa/0xf [ 738.988526] ? setup_fault_attr+0x200/0x200 [ 738.992829] ? lock_acquire+0x170/0x3c0 [ 738.996786] __should_failslab+0x115/0x180 [ 739.001014] should_failslab+0x5/0x10 [ 739.004794] kmem_cache_alloc_node_trace+0x244/0x3b0 [ 739.009893] __kmalloc_node_track_caller+0x38/0x70 [ 739.014824] __alloc_skb+0xae/0x560 [ 739.018448] alloc_uevent_skb+0x7b/0x210 [ 739.022491] kobject_uevent_env+0xa90/0x1480 [ 739.026883] ? nbd_size_update+0x28a/0x660 [ 739.031098] ? queue_work_on+0x11a/0x1f0 [ 739.035140] nbd_start_device+0x811/0xd60 [ 739.039275] nbd_ioctl+0x62c/0xbe0 [ 739.042806] ? _copy_from_user+0xd2/0x130 [ 739.046951] ? nbd_disconnect_and_put+0x190/0x190 [ 739.051780] ? __lock_acquire+0x6de/0x3ff0 [ 739.055996] ? nbd_disconnect_and_put+0x190/0x190 [ 739.060819] blkdev_ioctl+0x5cb/0x1a80 [ 739.064690] ? blkpg_ioctl+0x9d0/0x9d0 [ 739.068570] ? get_pid_task+0xf4/0x190 [ 739.072447] ? mark_held_locks+0xf0/0xf0 [ 739.076499] ? proc_fail_nth_write+0x95/0x1d0 [ 739.080982] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 739.085896] ? __fdget_pos+0x26f/0x310 [ 739.089944] block_ioctl+0xe9/0x130 [ 739.093551] ? blkdev_fallocate+0x3f0/0x3f0 [ 739.098028] do_vfs_ioctl+0xcdb/0x12e0 [ 739.101899] ? lock_downgrade+0x720/0x720 [ 739.106029] ? check_preemption_disabled+0x41/0x280 [ 739.111173] ? ioctl_preallocate+0x200/0x200 [ 739.115565] ? __fget+0x356/0x510 [ 739.118997] ? do_dup2+0x450/0x450 [ 739.122518] ? vfs_write+0x393/0x540 [ 739.126305] ? fput+0x2b/0x190 [ 739.129478] ksys_ioctl+0x9b/0xc0 [ 739.132914] __x64_sys_ioctl+0x6f/0xb0 [ 739.136778] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 739.141339] do_syscall_64+0xf9/0x620 [ 739.145134] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 739.150308] RIP: 0033:0x7f03750e1089 [ 739.154014] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 739.172903] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 739.180686] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 739.187935] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 739.195180] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 739.202425] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 739.209671] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 739.220664] FAULT_INJECTION: forcing a failure. [ 739.220664] name failslab, interval 1, probability 0, space 0, times 0 [ 739.233927] block nbd3: Could not allocate knbd recv work queue. [ 739.234759] FAULT_INJECTION: forcing a failure. executing program [ 739.234759] name failslab, interval 1, probability 0, space 0, times 0 [ 739.241333] block nbd3: shutting down sockets [ 739.251816] CPU: 1 PID: 8325 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 739.263677] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 739.273037] Call Trace: [ 739.275622] dump_stack+0x1fc/0x2ef [ 739.279245] should_fail.cold+0xa/0xf [ 739.283044] ? setup_fault_attr+0x200/0x200 [ 739.287360] ? lock_acquire+0x170/0x3c0 [ 739.291332] __should_failslab+0x115/0x180 [ 739.295566] should_failslab+0x5/0x10 [ 739.299359] kmem_cache_alloc+0x277/0x370 [ 739.303499] alloc_inode+0xab/0x180 [ 739.307113] new_inode+0x1d/0xf0 [ 739.310468] debugfs_get_inode+0x1a/0x130 [ 739.314607] __debugfs_create_file+0xb2/0x480 [ 739.319099] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 739.324280] ? kvm_clock_get_cycles+0x14/0x30 [ 739.328764] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 739.333601] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 739.338539] ? init_srcu_struct_fields+0xca6/0x1190 [ 739.343553] ? srcu_reschedule+0x120/0x120 [ 739.347789] ? __raw_spin_lock_init+0x28/0x100 [ 739.352382] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 739.357145] ? nbd_clear_que+0x160/0x160 [ 739.361204] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 739.366213] ? workqueue_sysfs_register+0x391/0x3e0 [ 739.371226] ? blk_mq_init_queue+0xa0/0xa0 [ 739.375452] ? apparmor_sb_mount+0x970/0x970 [ 739.379860] nbd_start_device+0x1f2/0xd60 [ 739.384002] ? security_capable+0x8f/0xc0 [ 739.388145] nbd_ioctl+0x62c/0xbe0 [ 739.391676] ? _copy_from_user+0xd2/0x130 [ 739.395815] ? nbd_disconnect_and_put+0x190/0x190 [ 739.400657] ? __lock_acquire+0x6de/0x3ff0 [ 739.404887] ? nbd_disconnect_and_put+0x190/0x190 [ 739.409720] blkdev_ioctl+0x5cb/0x1a80 [ 739.413596] ? blkpg_ioctl+0x9d0/0x9d0 [ 739.417473] ? get_pid_task+0xf4/0x190 [ 739.421351] ? mark_held_locks+0xf0/0xf0 [ 739.425400] ? proc_fail_nth_write+0x95/0x1d0 [ 739.429883] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 739.434802] ? __fdget_pos+0x26f/0x310 [ 739.438683] block_ioctl+0xe9/0x130 [ 739.442295] ? blkdev_fallocate+0x3f0/0x3f0 [ 739.446608] do_vfs_ioctl+0xcdb/0x12e0 [ 739.450487] ? lock_downgrade+0x720/0x720 [ 739.454630] ? check_preemption_disabled+0x41/0x280 [ 739.459636] ? ioctl_preallocate+0x200/0x200 [ 739.464040] ? __fget+0x356/0x510 [ 739.467489] ? do_dup2+0x450/0x450 [ 739.471016] ? vfs_write+0x393/0x540 [ 739.474720] ? fput+0x2b/0x190 [ 739.477906] ksys_ioctl+0x9b/0xc0 [ 739.481355] __x64_sys_ioctl+0x6f/0xb0 [ 739.485233] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 739.489806] do_syscall_64+0xf9/0x620 [ 739.493604] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 739.498780] RIP: 0033:0x7f03750e1089 [ 739.502484] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 739.521372] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 739.529066] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 739.536321] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 739.543580] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 739.550836] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 739.558091] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 739.565366] CPU: 0 PID: 8318 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 739.573253] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 739.578215] block nbd4: shutting down sockets [ 739.582597] Call Trace: [ 739.582619] dump_stack+0x1fc/0x2ef executing program executing program [ 739.582638] should_fail.cold+0xa/0xf [ 739.582655] ? setup_fault_attr+0x200/0x200 [ 739.582668] ? lock_acquire+0x170/0x3c0 [ 739.582686] __should_failslab+0x115/0x180 [ 739.609697] should_failslab+0x5/0x10 [ 739.613498] __kmalloc_track_caller+0x2a6/0x3c0 [ 739.618166] ? kvasprintf_const+0x60/0x190 [ 739.622409] kvasprintf+0xb5/0x150 [ 739.625949] ? bust_spinlocks+0xe0/0xe0 [ 739.629932] ? mark_held_locks+0xa6/0xf0 [ 739.633996] kvasprintf_const+0x60/0x190 [ 739.638061] kobject_set_name_vargs+0x56/0x150 [ 739.642649] kobject_add+0x10d/0x1c0 [ 739.646365] ? kset_create_and_add+0x1a0/0x1a0 [ 739.650948] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 739.655607] ? lock_downgrade+0x720/0x720 [ 739.659737] ? kernfs_put.part.0+0x225/0x590 [ 739.664133] blk_mq_register_hctx+0x23c/0x2c0 [ 739.668628] blk_mq_sysfs_register+0x143/0x1c0 [ 739.673203] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 739.678208] ? workqueue_sysfs_register+0x391/0x3e0 [ 739.683217] ? blk_mq_init_queue+0xa0/0xa0 [ 739.687445] nbd_start_device+0x1f2/0xd60 [ 739.691580] ? security_capable+0x8f/0xc0 executing program [ 739.695719] nbd_ioctl+0x62c/0xbe0 [ 739.698482] block nbd1: shutting down sockets [ 739.699248] ? _copy_from_user+0xd2/0x130 [ 739.707850] ? nbd_disconnect_and_put+0x190/0x190 [ 739.712701] ? __lock_acquire+0x6de/0x3ff0 [ 739.716939] ? nbd_disconnect_and_put+0x190/0x190 [ 739.721786] blkdev_ioctl+0x5cb/0x1a80 [ 739.726187] ? blkpg_ioctl+0x9d0/0x9d0 [ 739.730067] ? get_pid_task+0xf4/0x190 [ 739.733947] ? mark_held_locks+0xf0/0xf0 [ 739.737997] ? proc_fail_nth_write+0x95/0x1d0 [ 739.742475] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 739.747385] ? __fdget_pos+0x26f/0x310 [ 739.751265] block_ioctl+0xe9/0x130 [ 739.754878] ? blkdev_fallocate+0x3f0/0x3f0 [ 739.759191] do_vfs_ioctl+0xcdb/0x12e0 [ 739.763067] ? lock_downgrade+0x720/0x720 [ 739.767202] ? check_preemption_disabled+0x41/0x280 [ 739.772209] ? ioctl_preallocate+0x200/0x200 [ 739.776609] ? __fget+0x356/0x510 [ 739.780041] ? do_dup2+0x450/0x450 [ 739.783561] ? vfs_write+0x393/0x540 [ 739.787266] ? fput+0x2b/0x190 [ 739.790448] ksys_ioctl+0x9b/0xc0 [ 739.793969] __x64_sys_ioctl+0x6f/0xb0 [ 739.797851] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 739.802432] do_syscall_64+0xf9/0x620 [ 739.806235] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 739.811416] RIP: 0033:0x7f03750e1089 [ 739.815109] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 739.833989] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 739.841679] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 739.848932] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 739.856189] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 739.863438] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 739.870686] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 739.881542] FAULT_INJECTION: forcing a failure. [ 739.881542] name failslab, interval 1, probability 0, space 0, times 0 [ 739.890881] kobject: can not set name properly! [ 739.892983] CPU: 0 PID: 8339 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 739.905335] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 739.907261] block nbd2: shutting down sockets [ 739.914675] Call Trace: [ 739.914695] dump_stack+0x1fc/0x2ef [ 739.914715] should_fail.cold+0xa/0xf [ 739.914733] ? setup_fault_attr+0x200/0x200 [ 739.914748] ? lock_acquire+0x170/0x3c0 [ 739.914766] __should_failslab+0x115/0x180 [ 739.914782] should_failslab+0x5/0x10 executing program [ 739.945455] kmem_cache_alloc+0x277/0x370 [ 739.949610] __kernfs_new_node+0xd2/0x680 [ 739.953752] ? kfree+0xcc/0x210 [ 739.957015] ? kobject_add+0x10d/0x1c0 [ 739.960892] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 739.965983] ? nbd_start_device+0x1f2/0xd60 [ 739.970288] ? nbd_ioctl+0x62c/0xbe0 [ 739.973982] ? blkdev_ioctl+0x5cb/0x1a80 [ 739.978024] ? do_vfs_ioctl+0xcdb/0x12e0 [ 739.982064] ? __x64_sys_ioctl+0x6f/0xb0 [ 739.986104] ? do_syscall_64+0xf9/0x620 [ 739.990057] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 739.995403] ? debug_check_no_obj_freed+0x201/0x490 [ 740.000411] kernfs_create_dir_ns+0x9e/0x230 [ 740.004804] sysfs_create_dir_ns+0x127/0x280 [ 740.009192] ? sysfs_create_mount_point+0xb0/0xb0 [ 740.014017] ? mark_held_locks+0xa6/0xf0 [ 740.018153] ? kfree+0x110/0x210 [ 740.021515] ? kfree_const+0x51/0x60 [ 740.025215] kobject_add_internal+0x2a5/0x9c0 [ 740.029703] kobject_add+0x150/0x1c0 [ 740.033401] ? kset_create_and_add+0x1a0/0x1a0 [ 740.037961] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 740.042614] ? lock_downgrade+0x720/0x720 [ 740.046743] ? kernfs_put.part.0+0x225/0x590 [ 740.051142] blk_mq_register_hctx+0x23c/0x2c0 [ 740.055628] blk_mq_sysfs_register+0x143/0x1c0 [ 740.060193] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 740.065200] ? workqueue_sysfs_register+0x391/0x3e0 [ 740.070201] ? blk_mq_init_queue+0xa0/0xa0 [ 740.074420] ? apparmor_sb_mount+0x970/0x970 [ 740.078815] nbd_start_device+0x1f2/0xd60 [ 740.082948] ? security_capable+0x8f/0xc0 [ 740.087091] nbd_ioctl+0x62c/0xbe0 [ 740.090626] ? _copy_from_user+0xd2/0x130 [ 740.094775] ? nbd_disconnect_and_put+0x190/0x190 [ 740.099610] ? __lock_acquire+0x6de/0x3ff0 [ 740.103837] ? nbd_disconnect_and_put+0x190/0x190 [ 740.108669] blkdev_ioctl+0x5cb/0x1a80 [ 740.112549] ? blkpg_ioctl+0x9d0/0x9d0 [ 740.116428] ? get_pid_task+0xf4/0x190 [ 740.120308] ? mark_held_locks+0xf0/0xf0 [ 740.124359] ? proc_fail_nth_write+0x95/0x1d0 [ 740.128835] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 740.133759] ? __fdget_pos+0x26f/0x310 [ 740.137638] block_ioctl+0xe9/0x130 [ 740.141246] ? blkdev_fallocate+0x3f0/0x3f0 [ 740.145547] do_vfs_ioctl+0xcdb/0x12e0 [ 740.149413] ? lock_downgrade+0x720/0x720 [ 740.153554] ? check_preemption_disabled+0x41/0x280 [ 740.158565] ? ioctl_preallocate+0x200/0x200 [ 740.162976] ? __fget+0x356/0x510 [ 740.166418] ? do_dup2+0x450/0x450 [ 740.169946] ? vfs_write+0x393/0x540 [ 740.173656] ? fput+0x2b/0x190 [ 740.176845] ksys_ioctl+0x9b/0xc0 [ 740.180293] __x64_sys_ioctl+0x6f/0xb0 [ 740.184171] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 740.188736] do_syscall_64+0xf9/0x620 [ 740.192525] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 740.197697] RIP: 0033:0x7f03750e1089 [ 740.201403] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 740.220291] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 740.227993] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 740.235241] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 740.242499] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 740.249760] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 740.259011] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 740.266915] kobject_add_internal failed for cpu0 (error: -12 parent: 0) [ 740.280101] block nbd0: shutting down sockets executing program [ 740.303384] block nbd5: Device being setup by another task [ 740.309213] block nbd5: Could not allocate knbd recv work queue. [ 740.316855] block nbd5: shutting down sockets [ 740.323381] block nbd3: Device being setup by another task [ 740.327887] block nbd4: Device being setup by another task [ 740.329412] block nbd1: Device being setup by another task [ 740.335193] block nbd3: Could not allocate knbd recv work queue. [ 740.340380] block nbd2: Device being setup by another task executing program executing program executing program executing program executing program [ 740.353073] block nbd4: Could not allocate knbd recv work queue. [ 740.355339] block nbd3: shutting down sockets [ 740.360832] block nbd1: Could not allocate knbd recv work queue. [ 740.372269] block nbd2: Could not allocate knbd recv work queue. [ 740.375776] block nbd4: shutting down sockets [ 740.380102] block nbd2: shutting down sockets [ 740.386585] block nbd1: shutting down sockets [ 740.424585] FAULT_INJECTION: forcing a failure. [ 740.424585] name failslab, interval 1, probability 0, space 0, times 0 [ 740.435888] CPU: 0 PID: 8371 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 740.443764] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 740.453097] Call Trace: [ 740.455673] dump_stack+0x1fc/0x2ef [ 740.459289] should_fail.cold+0xa/0xf [ 740.463075] ? setup_fault_attr+0x200/0x200 [ 740.467382] ? lock_acquire+0x170/0x3c0 [ 740.471370] __should_failslab+0x115/0x180 [ 740.475589] should_failslab+0x5/0x10 [ 740.479376] kmem_cache_alloc_node+0x245/0x3b0 [ 740.483961] __alloc_skb+0x71/0x560 [ 740.487583] alloc_uevent_skb+0x7b/0x210 [ 740.491638] kobject_uevent_env+0xa90/0x1480 [ 740.496044] ? nbd_size_update+0x28a/0x660 [ 740.500267] ? queue_work_on+0x11a/0x1f0 [ 740.504312] nbd_start_device+0x811/0xd60 [ 740.508447] nbd_ioctl+0x62c/0xbe0 [ 740.511969] ? _copy_from_user+0xd2/0x130 [ 740.516098] ? nbd_disconnect_and_put+0x190/0x190 [ 740.520924] ? __lock_acquire+0x6de/0x3ff0 [ 740.525140] ? nbd_disconnect_and_put+0x190/0x190 [ 740.529967] blkdev_ioctl+0x5cb/0x1a80 [ 740.533833] ? blkpg_ioctl+0x9d0/0x9d0 [ 740.537699] ? get_pid_task+0xf4/0x190 [ 740.541567] ? mark_held_locks+0xf0/0xf0 [ 740.545623] ? proc_fail_nth_write+0x95/0x1d0 [ 740.550097] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 740.555008] ? __fdget_pos+0x26f/0x310 [ 740.558878] block_ioctl+0xe9/0x130 [ 740.562484] ? blkdev_fallocate+0x3f0/0x3f0 [ 740.566791] do_vfs_ioctl+0xcdb/0x12e0 [ 740.570668] ? lock_downgrade+0x720/0x720 [ 740.574796] ? check_preemption_disabled+0x41/0x280 [ 740.579793] ? ioctl_preallocate+0x200/0x200 [ 740.584183] ? __fget+0x356/0x510 [ 740.587617] ? do_dup2+0x450/0x450 [ 740.591145] ? vfs_write+0x393/0x540 [ 740.594847] ? fput+0x2b/0x190 [ 740.598020] ksys_ioctl+0x9b/0xc0 [ 740.601455] __x64_sys_ioctl+0x6f/0xb0 [ 740.605321] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 740.609884] do_syscall_64+0xf9/0x620 [ 740.613667] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 740.618843] RIP: 0033:0x7f03750e1089 [ 740.622546] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 740.641431] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 740.649123] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 740.656381] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 740.663628] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 740.670878] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 740.678128] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 740.693752] block nbd3: Could not allocate knbd recv work queue. [ 740.695938] block nbd4: Could not allocate knbd recv work queue. [ 740.704462] block nbd3: shutting down sockets [ 740.707843] block nbd4: shutting down sockets [ 740.711386] FAULT_INJECTION: forcing a failure. [ 740.711386] name fail_page_alloc, interval 1, probability 0, space 0, times 1 [ 740.717379] FAULT_INJECTION: forcing a failure. [ 740.717379] name failslab, interval 1, probability 0, space 0, times 0 [ 740.726917] CPU: 1 PID: 8373 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 740.726925] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 740.726930] Call Trace: [ 740.726950] dump_stack+0x1fc/0x2ef [ 740.726969] should_fail.cold+0xa/0xf [ 740.726985] ? setup_fault_attr+0x200/0x200 [ 740.727000] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 740.727015] ? __wake_up_common_lock+0xe0/0x170 [ 740.727033] __alloc_pages_nodemask+0x239/0x2890 [ 740.727045] ? d_add+0x393/0x650 [ 740.727067] ? __lock_acquire+0x6de/0x3ff0 [ 740.791745] ? _raw_spin_unlock+0x29/0x40 [ 740.795903] ? gfp_pfmemalloc_allowed+0x150/0x150 [ 740.800766] ? __lookup_slow+0x298/0x4a0 [ 740.804826] ? follow_dotdot_rcu+0x1040/0x1040 [ 740.809417] ? __d_lookup+0x411/0x710 [ 740.813227] cache_grow_begin+0xa4/0x8a0 [ 740.817287] ? setup_fault_attr+0x200/0x200 [ 740.821599] ? cache_alloc_pfmemalloc+0x1e/0x140 executing program executing program [ 740.826349] cache_alloc_refill+0x273/0x340 [ 740.830666] kmem_cache_alloc+0x346/0x370 [ 740.834874] alloc_inode+0xab/0x180 [ 740.835105] block nbd5: shutting down sockets [ 740.838492] new_inode+0x1d/0xf0 [ 740.838507] debugfs_get_inode+0x1a/0x130 [ 740.838521] __debugfs_create_file+0xb2/0x480 [ 740.838539] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 740.860135] ? kvm_clock_get_cycles+0x14/0x30 [ 740.861456] block nbd2: Could not allocate knbd recv work queue. [ 740.864625] ? ktime_get_mono_fast_ns+0x168/0x1f0 executing program [ 740.864645] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 740.864659] ? init_srcu_struct_fields+0xca6/0x1190 [ 740.864675] ? srcu_reschedule+0x120/0x120 [ 740.864691] ? __raw_spin_lock_init+0x28/0x100 [ 740.864709] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 740.864726] ? nbd_clear_que+0x160/0x160 [ 740.864743] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 740.872468] block nbd2: shutting down sockets [ 740.875697] ? workqueue_sysfs_register+0x391/0x3e0 [ 740.875717] ? blk_mq_init_queue+0xa0/0xa0 [ 740.875732] ? apparmor_sb_mount+0x970/0x970 [ 740.875759] nbd_start_device+0x1f2/0xd60 [ 740.875775] ? security_capable+0x8f/0xc0 [ 740.875792] nbd_ioctl+0x62c/0xbe0 [ 740.938111] ? _copy_from_user+0xd2/0x130 [ 740.942253] ? nbd_disconnect_and_put+0x190/0x190 [ 740.947098] ? __lock_acquire+0x6de/0x3ff0 [ 740.951331] ? nbd_disconnect_and_put+0x190/0x190 [ 740.956251] blkdev_ioctl+0x5cb/0x1a80 [ 740.960130] ? blkpg_ioctl+0x9d0/0x9d0 [ 740.964010] ? get_pid_task+0xf4/0x190 [ 740.967890] ? mark_held_locks+0xf0/0xf0 [ 740.971941] ? proc_fail_nth_write+0x95/0x1d0 executing program [ 740.976433] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 740.981359] ? __fdget_pos+0x26f/0x310 [ 740.985252] block_ioctl+0xe9/0x130 [ 740.988869] ? blkdev_fallocate+0x3f0/0x3f0 [ 740.993182] do_vfs_ioctl+0xcdb/0x12e0 [ 740.997061] ? lock_downgrade+0x720/0x720 [ 741.001198] ? check_preemption_disabled+0x41/0x280 [ 741.006205] ? ioctl_preallocate+0x200/0x200 [ 741.010604] ? __fget+0x356/0x510 [ 741.014055] ? do_dup2+0x450/0x450 [ 741.017584] ? vfs_write+0x393/0x540 [ 741.021294] ? fput+0x2b/0x190 [ 741.024489] ksys_ioctl+0x9b/0xc0 [ 741.027931] __x64_sys_ioctl+0x6f/0xb0 [ 741.031811] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 741.036385] do_syscall_64+0xf9/0x620 [ 741.040183] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 741.045359] RIP: 0033:0x7f03750e1089 [ 741.049064] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 741.067955] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 741.075654] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 741.082914] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 741.090169] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 741.097428] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 741.104688] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 741.111965] CPU: 0 PID: 8390 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 741.119844] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 741.129180] Call Trace: [ 741.131760] dump_stack+0x1fc/0x2ef [ 741.135373] should_fail.cold+0xa/0xf [ 741.139156] ? setup_fault_attr+0x200/0x200 [ 741.143461] ? lock_acquire+0x170/0x3c0 [ 741.147425] __should_failslab+0x115/0x180 [ 741.151643] should_failslab+0x5/0x10 [ 741.155424] kmem_cache_alloc_node_trace+0x244/0x3b0 [ 741.160509] __kmalloc_node_track_caller+0x38/0x70 [ 741.165426] __alloc_skb+0xae/0x560 [ 741.169036] alloc_uevent_skb+0x7b/0x210 [ 741.173077] kobject_uevent_env+0xa90/0x1480 [ 741.177468] ? nbd_size_update+0x28a/0x660 [ 741.181685] ? queue_work_on+0x11a/0x1f0 [ 741.185728] nbd_start_device+0x811/0xd60 [ 741.189859] nbd_ioctl+0x62c/0xbe0 [ 741.193381] ? _copy_from_user+0xd2/0x130 [ 741.197508] ? nbd_disconnect_and_put+0x190/0x190 [ 741.202332] ? __lock_acquire+0x6de/0x3ff0 [ 741.206558] ? nbd_disconnect_and_put+0x190/0x190 [ 741.211387] blkdev_ioctl+0x5cb/0x1a80 [ 741.215262] ? blkpg_ioctl+0x9d0/0x9d0 [ 741.219149] ? get_pid_task+0xf4/0x190 [ 741.223022] ? mark_held_locks+0xf0/0xf0 [ 741.227065] ? proc_fail_nth_write+0x95/0x1d0 [ 741.231542] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 741.236453] ? __fdget_pos+0x26f/0x310 [ 741.240322] block_ioctl+0xe9/0x130 [ 741.243931] ? blkdev_fallocate+0x3f0/0x3f0 [ 741.248236] do_vfs_ioctl+0xcdb/0x12e0 [ 741.252103] ? lock_downgrade+0x720/0x720 [ 741.256231] ? check_preemption_disabled+0x41/0x280 [ 741.261225] ? ioctl_preallocate+0x200/0x200 [ 741.265614] ? __fget+0x356/0x510 [ 741.269056] ? do_dup2+0x450/0x450 [ 741.272581] ? vfs_write+0x393/0x540 [ 741.276279] ? fput+0x2b/0x190 [ 741.279486] ksys_ioctl+0x9b/0xc0 [ 741.282927] __x64_sys_ioctl+0x6f/0xb0 [ 741.286795] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 741.291354] do_syscall_64+0xf9/0x620 [ 741.295135] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 741.300303] RIP: 0033:0x7f03750e1089 [ 741.303996] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 executing program executing program [ 741.322881] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 741.330576] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 741.337828] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 741.345081] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 741.352343] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 741.359613] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 741.367836] block nbd0: shutting down sockets [ 741.371638] block nbd1: shutting down sockets [ 741.413640] block nbd5: Device being setup by another task [ 741.415917] block nbd4: Device being setup by another task [ 741.425273] block nbd3: Device being setup by another task [ 741.430112] block nbd2: Device being setup by another task [ 741.431073] block nbd4: Could not allocate knbd recv work queue. [ 741.441513] FAULT_INJECTION: forcing a failure. [ 741.441513] name failslab, interval 1, probability 0, space 0, times 0 [ 741.442934] block nbd3: Could not allocate knbd recv work queue. [ 741.456631] CPU: 1 PID: 8410 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 741.461821] block nbd4: shutting down sockets [ 741.467942] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 741.467947] Call Trace: [ 741.467965] dump_stack+0x1fc/0x2ef [ 741.467982] should_fail.cold+0xa/0xf [ 741.467999] ? setup_fault_attr+0x200/0x200 [ 741.468013] ? lock_acquire+0x170/0x3c0 [ 741.468032] __should_failslab+0x115/0x180 [ 741.468048] should_failslab+0x5/0x10 [ 741.468063] kmem_cache_alloc_node+0x245/0x3b0 [ 741.473872] block nbd3: shutting down sockets [ 741.481885] __alloc_skb+0x71/0x560 [ 741.520681] alloc_uevent_skb+0x7b/0x210 [ 741.524739] kobject_uevent_env+0xa90/0x1480 [ 741.529140] ? nbd_size_update+0x28a/0x660 [ 741.533357] ? queue_work_on+0x11a/0x1f0 [ 741.537402] nbd_start_device+0x811/0xd60 [ 741.541531] nbd_ioctl+0x62c/0xbe0 [ 741.545053] ? _copy_from_user+0xd2/0x130 [ 741.549180] ? nbd_disconnect_and_put+0x190/0x190 [ 741.554005] ? __lock_acquire+0x6de/0x3ff0 [ 741.558237] ? nbd_disconnect_and_put+0x190/0x190 [ 741.563062] blkdev_ioctl+0x5cb/0x1a80 [ 741.566930] ? blkpg_ioctl+0x9d0/0x9d0 [ 741.570796] ? get_pid_task+0xf4/0x190 [ 741.574668] ? mark_held_locks+0xf0/0xf0 [ 741.578707] ? proc_fail_nth_write+0x95/0x1d0 [ 741.583180] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 741.588086] ? __fdget_pos+0x26f/0x310 [ 741.591955] block_ioctl+0xe9/0x130 [ 741.595560] ? blkdev_fallocate+0x3f0/0x3f0 [ 741.599858] do_vfs_ioctl+0xcdb/0x12e0 [ 741.603726] ? lock_downgrade+0x720/0x720 [ 741.607855] ? check_preemption_disabled+0x41/0x280 [ 741.612850] ? ioctl_preallocate+0x200/0x200 [ 741.617238] ? __fget+0x356/0x510 [ 741.620674] ? do_dup2+0x450/0x450 [ 741.624206] ? vfs_write+0x393/0x540 [ 741.627899] ? fput+0x2b/0x190 [ 741.631075] ksys_ioctl+0x9b/0xc0 [ 741.634509] __x64_sys_ioctl+0x6f/0xb0 [ 741.638374] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 741.642936] do_syscall_64+0xf9/0x620 [ 741.646719] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 741.651885] RIP: 0033:0x7f03750e1089 [ 741.655579] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 741.674455] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 741.682139] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 741.689386] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 741.696632] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 741.703883] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec executing program executing program [ 741.711129] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 741.723416] FAULT_INJECTION: forcing a failure. [ 741.723416] name failslab, interval 1, probability 0, space 0, times 0 [ 741.738532] CPU: 1 PID: 8412 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 741.739807] FAULT_INJECTION: forcing a failure. [ 741.739807] name failslab, interval 1, probability 0, space 0, times 0 [ 741.746416] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 741.746421] Call Trace: [ 741.746440] dump_stack+0x1fc/0x2ef [ 741.746458] should_fail.cold+0xa/0xf [ 741.746475] ? setup_fault_attr+0x200/0x200 [ 741.746490] ? lock_acquire+0x170/0x3c0 [ 741.746510] __should_failslab+0x115/0x180 [ 741.746526] should_failslab+0x5/0x10 [ 741.746539] __kmalloc_track_caller+0x2a6/0x3c0 [ 741.746553] ? kstrdup_const+0x53/0x80 [ 741.746569] kstrdup+0x36/0x70 [ 741.746584] kstrdup_const+0x53/0x80 [ 741.746598] __kernfs_new_node+0x9b/0x680 [ 741.746616] ? kfree+0xcc/0x210 [ 741.816037] ? kobject_add+0x10d/0x1c0 [ 741.819917] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 741.824663] ? nbd_start_device+0x1f2/0xd60 [ 741.828972] ? nbd_ioctl+0x62c/0xbe0 [ 741.832673] ? blkdev_ioctl+0x5cb/0x1a80 [ 741.836727] ? do_vfs_ioctl+0xcdb/0x12e0 [ 741.840776] ? __x64_sys_ioctl+0x6f/0xb0 [ 741.844822] ? do_syscall_64+0xf9/0x620 [ 741.848784] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 741.854136] ? debug_check_no_obj_freed+0x201/0x490 [ 741.859153] kernfs_create_dir_ns+0x9e/0x230 [ 741.863644] sysfs_create_dir_ns+0x127/0x280 [ 741.868213] ? sysfs_create_mount_point+0xb0/0xb0 [ 741.873224] ? mark_held_locks+0xa6/0xf0 [ 741.877270] ? kfree+0x110/0x210 [ 741.880625] ? kfree_const+0x51/0x60 [ 741.884338] kobject_add_internal+0x2a5/0x9c0 [ 741.888830] kobject_add+0x150/0x1c0 [ 741.892534] ? kset_create_and_add+0x1a0/0x1a0 [ 741.897106] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 741.901768] ? lock_downgrade+0x720/0x720 [ 741.905915] ? kernfs_put.part.0+0x225/0x590 [ 741.910320] blk_mq_register_hctx+0x23c/0x2c0 [ 741.914809] blk_mq_sysfs_register+0x143/0x1c0 [ 741.919384] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 741.924391] ? workqueue_sysfs_register+0x391/0x3e0 [ 741.929404] ? blk_mq_init_queue+0xa0/0xa0 [ 741.933640] nbd_start_device+0x1f2/0xd60 [ 741.937779] ? security_capable+0x8f/0xc0 [ 741.941921] nbd_ioctl+0x62c/0xbe0 [ 741.945452] ? _copy_from_user+0xd2/0x130 [ 741.949604] ? nbd_disconnect_and_put+0x190/0x190 [ 741.954448] ? __lock_acquire+0x6de/0x3ff0 [ 741.958700] ? nbd_disconnect_and_put+0x190/0x190 [ 741.963532] blkdev_ioctl+0x5cb/0x1a80 [ 741.967406] ? blkpg_ioctl+0x9d0/0x9d0 [ 741.971281] ? get_pid_task+0xf4/0x190 [ 741.975182] ? mark_held_locks+0xf0/0xf0 [ 741.979230] ? proc_fail_nth_write+0x95/0x1d0 [ 741.983715] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 741.988639] ? __fdget_pos+0x26f/0x310 [ 741.992523] block_ioctl+0xe9/0x130 [ 741.996140] ? blkdev_fallocate+0x3f0/0x3f0 [ 742.000447] do_vfs_ioctl+0xcdb/0x12e0 [ 742.004327] ? lock_downgrade+0x720/0x720 [ 742.008466] ? check_preemption_disabled+0x41/0x280 [ 742.013473] ? ioctl_preallocate+0x200/0x200 [ 742.017873] ? __fget+0x356/0x510 [ 742.021314] ? do_dup2+0x450/0x450 [ 742.024838] ? vfs_write+0x393/0x540 [ 742.028539] ? fput+0x2b/0x190 [ 742.031725] ksys_ioctl+0x9b/0xc0 [ 742.035169] __x64_sys_ioctl+0x6f/0xb0 [ 742.039051] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 742.043623] do_syscall_64+0xf9/0x620 [ 742.047416] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 742.052589] RIP: 0033:0x7f03750e1089 [ 742.056300] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 742.075188] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 742.082883] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 742.090140] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 742.097395] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 742.104649] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 742.111902] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 742.119175] CPU: 0 PID: 8427 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 742.122200] kobject_add_internal failed for cpu1 (error: -12 parent: 0) [ 742.127054] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 742.127059] Call Trace: [ 742.127080] dump_stack+0x1fc/0x2ef [ 742.127099] should_fail.cold+0xa/0xf [ 742.127122] ? setup_fault_attr+0x200/0x200 [ 742.127137] ? lock_acquire+0x170/0x3c0 [ 742.127157] __should_failslab+0x115/0x180 executing program [ 742.127175] should_failslab+0x5/0x10 [ 742.136736] block nbd2: shutting down sockets [ 742.143247] kmem_cache_alloc_node+0x245/0x3b0 [ 742.143268] __alloc_skb+0x71/0x560 [ 742.143287] alloc_uevent_skb+0x7b/0x210 [ 742.143304] kobject_uevent_env+0xa90/0x1480 [ 742.190690] ? nbd_size_update+0x28a/0x660 [ 742.194925] ? queue_work_on+0x11a/0x1f0 [ 742.199004] nbd_start_device+0x811/0xd60 [ 742.203141] nbd_ioctl+0x62c/0xbe0 [ 742.206667] ? _copy_from_user+0xd2/0x130 [ 742.210797] ? nbd_disconnect_and_put+0x190/0x190 [ 742.215623] ? __lock_acquire+0x6de/0x3ff0 [ 742.219838] ? nbd_disconnect_and_put+0x190/0x190 [ 742.224679] blkdev_ioctl+0x5cb/0x1a80 [ 742.228563] ? blkpg_ioctl+0x9d0/0x9d0 [ 742.232445] ? get_pid_task+0xf4/0x190 [ 742.236326] ? mark_held_locks+0xf0/0xf0 [ 742.240369] ? proc_fail_nth_write+0x95/0x1d0 [ 742.244867] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 742.249785] ? __fdget_pos+0x26f/0x310 [ 742.253672] block_ioctl+0xe9/0x130 [ 742.257296] ? blkdev_fallocate+0x3f0/0x3f0 [ 742.261611] do_vfs_ioctl+0xcdb/0x12e0 [ 742.265485] ? lock_downgrade+0x720/0x720 [ 742.269622] ? check_preemption_disabled+0x41/0x280 [ 742.274627] ? ioctl_preallocate+0x200/0x200 [ 742.279017] ? __fget+0x356/0x510 [ 742.282458] ? do_dup2+0x450/0x450 [ 742.285984] ? vfs_write+0x393/0x540 [ 742.289686] ? fput+0x2b/0x190 [ 742.292878] ksys_ioctl+0x9b/0xc0 [ 742.296318] __x64_sys_ioctl+0x6f/0xb0 [ 742.300195] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 742.304760] do_syscall_64+0xf9/0x620 [ 742.308545] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 742.313719] RIP: 0033:0x7f03750e1089 [ 742.317414] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 742.336389] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 742.344078] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 742.351325] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 742.358574] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 742.365828] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 742.373092] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 742.381368] FAULT_INJECTION: forcing a failure. [ 742.381368] name failslab, interval 1, probability 0, space 0, times 0 [ 742.388287] block nbd0: shutting down sockets [ 742.393034] CPU: 0 PID: 8426 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 742.404990] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 742.414340] Call Trace: [ 742.416935] dump_stack+0x1fc/0x2ef [ 742.420555] should_fail.cold+0xa/0xf [ 742.424336] ? setup_fault_attr+0x200/0x200 [ 742.428639] ? lock_acquire+0x170/0x3c0 [ 742.432596] __should_failslab+0x115/0x180 [ 742.436822] should_failslab+0x5/0x10 [ 742.440619] kmem_cache_alloc_node_trace+0x244/0x3b0 [ 742.445713] __kmalloc_node_track_caller+0x38/0x70 [ 742.450633] __alloc_skb+0xae/0x560 [ 742.454266] alloc_uevent_skb+0x7b/0x210 [ 742.458310] kobject_uevent_env+0xa90/0x1480 [ 742.462704] ? nbd_size_update+0x28a/0x660 [ 742.466921] ? queue_work_on+0x11a/0x1f0 [ 742.470965] nbd_start_device+0x811/0xd60 [ 742.475103] nbd_ioctl+0x62c/0xbe0 [ 742.478626] ? _copy_from_user+0xd2/0x130 [ 742.482847] ? nbd_disconnect_and_put+0x190/0x190 [ 742.487677] ? __lock_acquire+0x6de/0x3ff0 [ 742.491900] ? nbd_disconnect_and_put+0x190/0x190 [ 742.496722] blkdev_ioctl+0x5cb/0x1a80 [ 742.500589] ? blkpg_ioctl+0x9d0/0x9d0 [ 742.504459] ? get_pid_task+0xf4/0x190 [ 742.508325] ? mark_held_locks+0xf0/0xf0 [ 742.512364] ? proc_fail_nth_write+0x95/0x1d0 [ 742.516840] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 742.521841] ? __fdget_pos+0x26f/0x310 [ 742.525714] block_ioctl+0xe9/0x130 [ 742.529318] ? blkdev_fallocate+0x3f0/0x3f0 [ 742.533618] do_vfs_ioctl+0xcdb/0x12e0 [ 742.537487] ? lock_downgrade+0x720/0x720 [ 742.541621] ? check_preemption_disabled+0x41/0x280 [ 742.546624] ? ioctl_preallocate+0x200/0x200 [ 742.551033] ? __fget+0x356/0x510 [ 742.554471] ? do_dup2+0x450/0x450 [ 742.557998] ? vfs_write+0x393/0x540 [ 742.561698] ? fput+0x2b/0x190 [ 742.564871] ksys_ioctl+0x9b/0xc0 executing program [ 742.568305] __x64_sys_ioctl+0x6f/0xb0 [ 742.572180] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 742.576752] do_syscall_64+0xf9/0x620 [ 742.580548] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 742.585724] RIP: 0033:0x7f03750e1089 [ 742.589415] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 742.608294] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 executing program [ 742.615984] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 742.623232] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 742.630486] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 742.637732] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 742.644995] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 742.653484] block nbd1: shutting down sockets [ 742.662515] block nbd5: shutting down sockets executing program executing program [ 742.663146] block nbd4: Device being setup by another task [ 742.675279] block nbd4: shutting down sockets [ 742.683333] block nbd3: Device being setup by another task [ 742.689066] block nbd2: Device being setup by another task [ 742.697276] block nbd3: Could not allocate knbd recv work queue. [ 742.705613] block nbd2: Could not allocate knbd recv work queue. [ 742.710779] block nbd3: shutting down sockets executing program executing program [ 742.713856] block nbd2: shutting down sockets [ 742.723268] block nbd0: Device being setup by another task [ 742.744635] FAULT_INJECTION: forcing a failure. [ 742.744635] name failslab, interval 1, probability 0, space 0, times 0 [ 742.756022] CPU: 0 PID: 8449 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 742.763901] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 742.773239] Call Trace: [ 742.775811] dump_stack+0x1fc/0x2ef [ 742.779429] should_fail.cold+0xa/0xf [ 742.783229] ? setup_fault_attr+0x200/0x200 [ 742.787536] ? lock_acquire+0x170/0x3c0 [ 742.791501] __should_failslab+0x115/0x180 [ 742.795725] should_failslab+0x5/0x10 [ 742.799509] kmem_cache_alloc_node_trace+0x244/0x3b0 [ 742.804619] __kmalloc_node_track_caller+0x38/0x70 [ 742.809555] __alloc_skb+0xae/0x560 [ 742.813174] alloc_uevent_skb+0x7b/0x210 [ 742.817234] kobject_uevent_env+0xa90/0x1480 [ 742.821643] ? nbd_size_update+0x28a/0x660 [ 742.825860] ? queue_work_on+0x11a/0x1f0 [ 742.829904] nbd_start_device+0x811/0xd60 [ 742.834036] nbd_ioctl+0x62c/0xbe0 [ 742.837564] ? _copy_from_user+0xd2/0x130 [ 742.841691] ? nbd_disconnect_and_put+0x190/0x190 [ 742.846518] ? __lock_acquire+0x6de/0x3ff0 [ 742.850735] ? nbd_disconnect_and_put+0x190/0x190 [ 742.855557] blkdev_ioctl+0x5cb/0x1a80 [ 742.859431] ? blkpg_ioctl+0x9d0/0x9d0 [ 742.863306] ? get_pid_task+0xf4/0x190 [ 742.867177] ? mark_held_locks+0xf0/0xf0 [ 742.871487] ? proc_fail_nth_write+0x95/0x1d0 [ 742.875968] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 742.880878] ? __fdget_pos+0x26f/0x310 [ 742.884756] block_ioctl+0xe9/0x130 [ 742.888364] ? blkdev_fallocate+0x3f0/0x3f0 [ 742.892669] do_vfs_ioctl+0xcdb/0x12e0 [ 742.896538] ? lock_downgrade+0x720/0x720 [ 742.900663] ? check_preemption_disabled+0x41/0x280 [ 742.905660] ? ioctl_preallocate+0x200/0x200 [ 742.910052] ? __fget+0x356/0x510 [ 742.913486] ? do_dup2+0x450/0x450 [ 742.917003] ? vfs_write+0x393/0x540 [ 742.920699] ? fput+0x2b/0x190 [ 742.923887] ksys_ioctl+0x9b/0xc0 [ 742.927334] __x64_sys_ioctl+0x6f/0xb0 [ 742.931199] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 742.935762] do_syscall_64+0xf9/0x620 [ 742.939546] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 742.944713] RIP: 0033:0x7f03750e1089 [ 742.948407] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 742.967289] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 742.975325] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 742.982589] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 742.989845] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 742.997093] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 743.004346] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 743.019154] FAULT_INJECTION: forcing a failure. [ 743.019154] name failslab, interval 1, probability 0, space 0, times 0 [ 743.031080] block nbd5: Could not allocate knbd recv work queue. [ 743.033507] CPU: 0 PID: 8445 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 743.037562] block nbd2: Could not allocate knbd recv work queue. [ 743.045089] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 743.045094] Call Trace: [ 743.045114] dump_stack+0x1fc/0x2ef [ 743.045132] should_fail.cold+0xa/0xf executing program executing program [ 743.045150] ? setup_fault_attr+0x200/0x200 [ 743.051444] block nbd3: Could not allocate knbd recv work queue. [ 743.060610] ? lock_acquire+0x170/0x3c0 [ 743.060634] __should_failslab+0x115/0x180 [ 743.065020] block nbd5: shutting down sockets [ 743.066811] should_failslab+0x5/0x10 [ 743.066827] kmem_cache_alloc+0x277/0x370 [ 743.066844] __kernfs_new_node+0xd2/0x680 [ 743.066858] ? kfree+0xcc/0x210 [ 743.072072] block nbd2: shutting down sockets [ 743.074944] ? kobject_add+0x10d/0x1c0 [ 743.074960] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 743.074975] ? nbd_start_device+0x1f2/0xd60 [ 743.074986] ? nbd_ioctl+0x62c/0xbe0 [ 743.074997] ? blkdev_ioctl+0x5cb/0x1a80 [ 743.075008] ? do_vfs_ioctl+0xcdb/0x12e0 [ 743.075020] ? __x64_sys_ioctl+0x6f/0xb0 [ 743.075035] ? do_syscall_64+0xf9/0x620 [ 743.085689] block nbd3: shutting down sockets [ 743.089353] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 743.089372] ? debug_check_no_obj_freed+0x201/0x490 [ 743.089396] kernfs_create_dir_ns+0x9e/0x230 [ 743.089410] sysfs_create_dir_ns+0x127/0x280 [ 743.119350] FAULT_INJECTION: forcing a failure. [ 743.119350] name failslab, interval 1, probability 0, space 0, times 0 [ 743.122451] ? sysfs_create_mount_point+0xb0/0xb0 [ 743.122470] ? mark_held_locks+0xa6/0xf0 [ 743.122484] ? kfree+0x110/0x210 [ 743.122497] ? kfree_const+0x51/0x60 [ 743.122515] kobject_add_internal+0x2a5/0x9c0 [ 743.201670] kobject_add+0x150/0x1c0 [ 743.205377] ? kset_create_and_add+0x1a0/0x1a0 [ 743.209951] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 743.213463] block nbd1: shutting down sockets [ 743.214616] ? lock_downgrade+0x720/0x720 [ 743.214633] ? kernfs_put.part.0+0x225/0x590 [ 743.214655] blk_mq_register_hctx+0x23c/0x2c0 [ 743.232139] blk_mq_sysfs_register+0x143/0x1c0 [ 743.236720] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 743.241734] ? workqueue_sysfs_register+0x391/0x3e0 [ 743.246743] ? blk_mq_init_queue+0xa0/0xa0 [ 743.250973] ? apparmor_sb_mount+0x970/0x970 [ 743.255374] nbd_start_device+0x1f2/0xd60 [ 743.259515] ? security_capable+0x8f/0xc0 [ 743.263659] nbd_ioctl+0x62c/0xbe0 [ 743.267190] ? _copy_from_user+0xd2/0x130 [ 743.271328] ? nbd_disconnect_and_put+0x190/0x190 [ 743.276171] ? __lock_acquire+0x6de/0x3ff0 [ 743.280400] ? nbd_disconnect_and_put+0x190/0x190 [ 743.285238] blkdev_ioctl+0x5cb/0x1a80 [ 743.289119] ? blkpg_ioctl+0x9d0/0x9d0 [ 743.292996] ? get_pid_task+0xf4/0x190 [ 743.296877] ? mark_held_locks+0xf0/0xf0 [ 743.300926] ? proc_fail_nth_write+0x95/0x1d0 [ 743.305683] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 743.310604] ? __fdget_pos+0x26f/0x310 [ 743.314492] block_ioctl+0xe9/0x130 [ 743.318117] ? blkdev_fallocate+0x3f0/0x3f0 [ 743.322437] do_vfs_ioctl+0xcdb/0x12e0 [ 743.326321] ? lock_downgrade+0x720/0x720 [ 743.330465] ? check_preemption_disabled+0x41/0x280 [ 743.335469] ? ioctl_preallocate+0x200/0x200 [ 743.339871] ? __fget+0x356/0x510 [ 743.343316] ? do_dup2+0x450/0x450 [ 743.346841] ? vfs_write+0x393/0x540 [ 743.350545] ? fput+0x2b/0x190 [ 743.353734] ksys_ioctl+0x9b/0xc0 [ 743.357186] __x64_sys_ioctl+0x6f/0xb0 [ 743.361075] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 743.365653] do_syscall_64+0xf9/0x620 [ 743.369451] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 743.374627] RIP: 0033:0x7f03750e1089 [ 743.378333] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 743.397227] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 743.404922] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 743.412181] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 743.419438] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 743.426691] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 743.433945] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 743.441220] CPU: 1 PID: 8467 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 743.445919] kobject_add_internal failed for cpu0 (error: -12 parent: 0) [ 743.449098] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 743.449103] Call Trace: [ 743.449123] dump_stack+0x1fc/0x2ef executing program executing program [ 743.449145] should_fail.cold+0xa/0xf [ 743.475617] ? setup_fault_attr+0x200/0x200 [ 743.479939] ? lock_acquire+0x170/0x3c0 [ 743.483945] __should_failslab+0x115/0x180 [ 743.488171] should_failslab+0x5/0x10 [ 743.491953] kmem_cache_alloc_node_trace+0x244/0x3b0 [ 743.497043] __kmalloc_node_track_caller+0x38/0x70 [ 743.501959] __alloc_skb+0xae/0x560 [ 743.505584] alloc_uevent_skb+0x7b/0x210 [ 743.509633] kobject_uevent_env+0xa90/0x1480 [ 743.514029] ? nbd_size_update+0x28a/0x660 [ 743.518246] ? queue_work_on+0x11a/0x1f0 [ 743.522301] nbd_start_device+0x811/0xd60 [ 743.526436] nbd_ioctl+0x62c/0xbe0 [ 743.529969] ? _copy_from_user+0xd2/0x130 [ 743.534110] ? nbd_disconnect_and_put+0x190/0x190 [ 743.538937] ? __lock_acquire+0x6de/0x3ff0 [ 743.543155] ? nbd_disconnect_and_put+0x190/0x190 [ 743.548004] blkdev_ioctl+0x5cb/0x1a80 [ 743.551877] ? blkpg_ioctl+0x9d0/0x9d0 [ 743.555747] ? get_pid_task+0xf4/0x190 [ 743.559614] ? mark_held_locks+0xf0/0xf0 [ 743.563656] ? proc_fail_nth_write+0x95/0x1d0 [ 743.568131] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 743.573049] ? __fdget_pos+0x26f/0x310 [ 743.576937] block_ioctl+0xe9/0x130 [ 743.580554] ? blkdev_fallocate+0x3f0/0x3f0 [ 743.584860] do_vfs_ioctl+0xcdb/0x12e0 [ 743.588730] ? lock_downgrade+0x720/0x720 [ 743.592860] ? check_preemption_disabled+0x41/0x280 [ 743.597867] ? ioctl_preallocate+0x200/0x200 [ 743.602352] ? __fget+0x356/0x510 [ 743.605798] ? do_dup2+0x450/0x450 [ 743.609322] ? vfs_write+0x393/0x540 [ 743.613025] ? fput+0x2b/0x190 [ 743.616209] ksys_ioctl+0x9b/0xc0 [ 743.619645] __x64_sys_ioctl+0x6f/0xb0 [ 743.623512] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 743.628084] do_syscall_64+0xf9/0x620 [ 743.631889] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 743.637068] RIP: 0033:0x7f03750e1089 [ 743.640768] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 743.659647] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 executing program executing program [ 743.667421] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 743.674670] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 743.681918] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 743.689164] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 743.696411] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 743.704789] block nbd4: shutting down sockets [ 743.713764] block nbd0: shutting down sockets [ 743.753235] block nbd5: Device being setup by another task [ 743.753430] block nbd1: Device being setup by another task [ 743.758961] block nbd3: Device being setup by another task [ 743.764928] block nbd2: Device being setup by another task [ 743.772940] block nbd3: shutting down sockets [ 743.776301] block nbd5: Could not allocate knbd recv work queue. [ 743.783674] FAULT_INJECTION: forcing a failure. [ 743.783674] name failslab, interval 1, probability 0, space 0, times 0 executing program executing program [ 743.788515] block nbd2: Could not allocate knbd recv work queue. [ 743.805892] block nbd5: shutting down sockets [ 743.808525] CPU: 1 PID: 8491 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 743.815258] block nbd2: shutting down sockets [ 743.818262] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 743.818267] Call Trace: [ 743.818287] dump_stack+0x1fc/0x2ef [ 743.818304] should_fail.cold+0xa/0xf [ 743.818322] ? setup_fault_attr+0x200/0x200 [ 743.846376] ? lock_acquire+0x170/0x3c0 [ 743.850342] __should_failslab+0x115/0x180 [ 743.854563] should_failslab+0x5/0x10 [ 743.858344] __kmalloc+0x2ab/0x3c0 [ 743.861865] ? kobject_get_path+0xbf/0x240 [ 743.866079] kobject_get_path+0xbf/0x240 [ 743.870134] kobject_uevent_env+0x25c/0x1480 [ 743.876621] ? nbd_size_update+0x28a/0x660 [ 743.880846] ? queue_work_on+0x11a/0x1f0 [ 743.884894] nbd_start_device+0x811/0xd60 [ 743.889047] nbd_ioctl+0x62c/0xbe0 [ 743.892580] ? _copy_from_user+0xd2/0x130 [ 743.896709] ? nbd_disconnect_and_put+0x190/0x190 [ 743.901534] ? __lock_acquire+0x6de/0x3ff0 [ 743.905756] ? nbd_disconnect_and_put+0x190/0x190 [ 743.910583] blkdev_ioctl+0x5cb/0x1a80 [ 743.914453] ? blkpg_ioctl+0x9d0/0x9d0 [ 743.918319] ? get_pid_task+0xf4/0x190 [ 743.922186] ? mark_held_locks+0xf0/0xf0 [ 743.926234] ? proc_fail_nth_write+0x95/0x1d0 [ 743.930722] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 743.935643] ? __fdget_pos+0x26f/0x310 [ 743.939523] block_ioctl+0xe9/0x130 [ 743.943144] ? blkdev_fallocate+0x3f0/0x3f0 [ 743.947450] do_vfs_ioctl+0xcdb/0x12e0 [ 743.951321] ? lock_downgrade+0x720/0x720 [ 743.955518] ? check_preemption_disabled+0x41/0x280 [ 743.960533] ? ioctl_preallocate+0x200/0x200 [ 743.964940] ? __fget+0x356/0x510 [ 743.968388] ? do_dup2+0x450/0x450 [ 743.971909] ? vfs_write+0x393/0x540 [ 743.975604] ? fput+0x2b/0x190 [ 743.978781] ksys_ioctl+0x9b/0xc0 [ 743.982217] __x64_sys_ioctl+0x6f/0xb0 [ 743.986096] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 743.990669] do_syscall_64+0xf9/0x620 [ 743.994461] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 743.999639] RIP: 0033:0x7f03750e1089 [ 744.003336] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 744.022222] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 744.029912] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 744.037165] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 744.044422] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 executing program executing program [ 744.051671] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 744.058919] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 744.074281] block nbd0: Could not allocate knbd recv work queue. [ 744.082756] FAULT_INJECTION: forcing a failure. [ 744.082756] name failslab, interval 1, probability 0, space 0, times 0 [ 744.089617] block nbd0: shutting down sockets [ 744.094393] CPU: 0 PID: 8489 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 744.106423] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 744.115765] Call Trace: [ 744.118338] dump_stack+0x1fc/0x2ef [ 744.121962] should_fail.cold+0xa/0xf [ 744.125777] ? setup_fault_attr+0x200/0x200 [ 744.130086] ? lock_acquire+0x170/0x3c0 [ 744.134053] __should_failslab+0x115/0x180 [ 744.138283] should_failslab+0x5/0x10 [ 744.142069] __kmalloc_track_caller+0x2a6/0x3c0 [ 744.146722] ? kstrdup_const+0x53/0x80 [ 744.150594] kstrdup+0x36/0x70 executing program [ 744.153784] kstrdup_const+0x53/0x80 [ 744.157499] __kernfs_new_node+0x9b/0x680 [ 744.161633] ? kfree+0xcc/0x210 [ 744.164894] ? kobject_add+0x10d/0x1c0 [ 744.168763] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 744.173501] ? nbd_start_device+0x1f2/0xd60 [ 744.177809] ? nbd_ioctl+0x62c/0xbe0 [ 744.181510] ? blkdev_ioctl+0x5cb/0x1a80 [ 744.185568] ? do_vfs_ioctl+0xcdb/0x12e0 [ 744.187020] block nbd4: shutting down sockets [ 744.189621] ? __x64_sys_ioctl+0x6f/0xb0 [ 744.189634] ? do_syscall_64+0xf9/0x620 [ 744.189652] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 744.207463] ? debug_check_no_obj_freed+0x201/0x490 [ 744.212491] kernfs_create_dir_ns+0x9e/0x230 [ 744.216897] sysfs_create_dir_ns+0x127/0x280 [ 744.221290] ? sysfs_create_mount_point+0xb0/0xb0 [ 744.226120] ? mark_held_locks+0xa6/0xf0 [ 744.230161] ? kfree+0x110/0x210 [ 744.233525] ? kfree_const+0x51/0x60 [ 744.237231] kobject_add_internal+0x2a5/0x9c0 [ 744.241715] kobject_add+0x150/0x1c0 [ 744.245669] ? kset_create_and_add+0x1a0/0x1a0 [ 744.250243] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 744.254911] ? lock_downgrade+0x720/0x720 [ 744.259059] ? kernfs_put.part.0+0x225/0x590 [ 744.263464] blk_mq_register_hctx+0x23c/0x2c0 [ 744.267971] blk_mq_sysfs_register+0x143/0x1c0 [ 744.272548] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 744.277552] ? workqueue_sysfs_register+0x391/0x3e0 [ 744.282555] ? blk_mq_init_queue+0xa0/0xa0 [ 744.286776] nbd_start_device+0x1f2/0xd60 [ 744.290909] ? security_capable+0x8f/0xc0 [ 744.295042] nbd_ioctl+0x62c/0xbe0 [ 744.298576] ? _copy_from_user+0xd2/0x130 [ 744.302714] ? nbd_disconnect_and_put+0x190/0x190 [ 744.307551] ? __lock_acquire+0x6de/0x3ff0 [ 744.311777] ? nbd_disconnect_and_put+0x190/0x190 [ 744.316620] blkdev_ioctl+0x5cb/0x1a80 [ 744.320488] ? blkpg_ioctl+0x9d0/0x9d0 [ 744.324358] ? get_pid_task+0xf4/0x190 [ 744.328237] ? mark_held_locks+0xf0/0xf0 [ 744.332287] ? proc_fail_nth_write+0x95/0x1d0 [ 744.336763] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 744.341683] ? __fdget_pos+0x26f/0x310 [ 744.345564] block_ioctl+0xe9/0x130 [ 744.349176] ? blkdev_fallocate+0x3f0/0x3f0 [ 744.353495] do_vfs_ioctl+0xcdb/0x12e0 [ 744.357376] ? lock_downgrade+0x720/0x720 [ 744.361521] ? check_preemption_disabled+0x41/0x280 [ 744.366528] ? ioctl_preallocate+0x200/0x200 [ 744.370921] ? __fget+0x356/0x510 [ 744.374357] ? do_dup2+0x450/0x450 [ 744.377876] ? vfs_write+0x393/0x540 [ 744.381583] ? fput+0x2b/0x190 [ 744.384774] ksys_ioctl+0x9b/0xc0 [ 744.388230] __x64_sys_ioctl+0x6f/0xb0 [ 744.392111] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 744.396674] do_syscall_64+0xf9/0x620 [ 744.400458] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 744.405627] RIP: 0033:0x7f03750e1089 [ 744.409322] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 744.428203] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 744.435889] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 744.443138] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 executing program [ 744.450387] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 744.457634] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 744.464886] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 744.474560] kobject_add_internal failed for cpu1 (error: -12 parent: 0) [ 744.488983] block nbd1: shutting down sockets executing program [ 744.505713] block nbd2: Device being setup by another task [ 744.511638] block nbd2: Could not allocate knbd recv work queue. [ 744.513092] block nbd5: Device being setup by another task [ 744.522873] block nbd2: shutting down sockets [ 744.523558] block nbd3: Device being setup by another task [ 744.533318] block nbd0: Device being setup by another task [ 744.534085] block nbd5: Could not allocate knbd recv work queue. [ 744.539422] block nbd0: Could not allocate knbd recv work queue. executing program executing program executing program executing program [ 744.548386] block nbd3: Could not allocate knbd recv work queue. [ 744.551843] block nbd4: Device being setup by another task [ 744.559630] block nbd5: shutting down sockets [ 744.569335] block nbd3: shutting down sockets [ 744.576355] block nbd4: Could not allocate knbd recv work queue. [ 744.582628] block nbd0: shutting down sockets [ 744.587768] block nbd4: shutting down sockets [ 744.633014] block nbd2: Device being setup by another task [ 744.639220] FAULT_INJECTION: forcing a failure. [ 744.639220] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 744.641172] FAULT_INJECTION: forcing a failure. [ 744.641172] name failslab, interval 1, probability 0, space 0, times 0 [ 744.651096] CPU: 0 PID: 8527 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 744.651103] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 744.651108] Call Trace: [ 744.651128] dump_stack+0x1fc/0x2ef [ 744.651146] should_fail.cold+0xa/0xf [ 744.651163] ? setup_fault_attr+0x200/0x200 [ 744.651176] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 744.651192] ? __wake_up_common_lock+0xe0/0x170 [ 744.651210] __alloc_pages_nodemask+0x239/0x2890 [ 744.651228] ? d_add+0x393/0x650 [ 744.711623] ? __lock_acquire+0x6de/0x3ff0 [ 744.715850] ? _raw_spin_unlock+0x29/0x40 [ 744.719996] ? gfp_pfmemalloc_allowed+0x150/0x150 [ 744.724841] ? __lookup_slow+0x298/0x4a0 [ 744.728893] ? follow_dotdot_rcu+0x1040/0x1040 [ 744.733470] ? __d_lookup+0x411/0x710 [ 744.737266] cache_grow_begin+0xa4/0x8a0 [ 744.741315] ? setup_fault_attr+0x200/0x200 [ 744.745623] ? cache_alloc_pfmemalloc+0x1e/0x140 [ 744.750369] cache_alloc_refill+0x273/0x340 [ 744.754683] kmem_cache_alloc+0x346/0x370 [ 744.758823] alloc_inode+0xab/0x180 [ 744.762436] new_inode+0x1d/0xf0 [ 744.765797] debugfs_get_inode+0x1a/0x130 [ 744.769939] __debugfs_create_file+0xb2/0x480 [ 744.774433] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 744.779610] ? kvm_clock_get_cycles+0x14/0x30 [ 744.784099] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 744.788944] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 744.793863] ? init_srcu_struct_fields+0xca6/0x1190 [ 744.798868] ? srcu_reschedule+0x120/0x120 [ 744.803098] ? __raw_spin_lock_init+0x28/0x100 [ 744.807680] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 744.812439] ? nbd_clear_que+0x160/0x160 [ 744.816494] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 744.821501] ? workqueue_sysfs_register+0x391/0x3e0 [ 744.826512] ? blk_mq_init_queue+0xa0/0xa0 [ 744.830741] ? apparmor_sb_mount+0x970/0x970 [ 744.835147] nbd_start_device+0x1f2/0xd60 [ 744.839292] ? security_capable+0x8f/0xc0 [ 744.843430] nbd_ioctl+0x62c/0xbe0 [ 744.846967] ? _copy_from_user+0xd2/0x130 [ 744.851111] ? nbd_disconnect_and_put+0x190/0x190 [ 744.855954] ? __lock_acquire+0x6de/0x3ff0 [ 744.860183] ? nbd_disconnect_and_put+0x190/0x190 [ 744.865015] blkdev_ioctl+0x5cb/0x1a80 [ 744.868889] ? blkpg_ioctl+0x9d0/0x9d0 [ 744.872768] ? get_pid_task+0xf4/0x190 [ 744.876649] ? mark_held_locks+0xf0/0xf0 [ 744.880704] ? proc_fail_nth_write+0x95/0x1d0 [ 744.885192] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 744.890108] ? __fdget_pos+0x26f/0x310 [ 744.893994] block_ioctl+0xe9/0x130 [ 744.897606] ? blkdev_fallocate+0x3f0/0x3f0 [ 744.901925] do_vfs_ioctl+0xcdb/0x12e0 [ 744.905833] ? lock_downgrade+0x720/0x720 [ 744.909973] ? check_preemption_disabled+0x41/0x280 [ 744.914985] ? ioctl_preallocate+0x200/0x200 [ 744.919382] ? __fget+0x356/0x510 [ 744.922825] ? do_dup2+0x450/0x450 [ 744.926355] ? vfs_write+0x393/0x540 [ 744.930055] ? fput+0x2b/0x190 [ 744.933240] ksys_ioctl+0x9b/0xc0 [ 744.936684] __x64_sys_ioctl+0x6f/0xb0 [ 744.940562] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 744.945129] do_syscall_64+0xf9/0x620 [ 744.948923] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 744.954196] RIP: 0033:0x7f03750e1089 [ 744.957896] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 744.976784] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 744.984483] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 744.991738] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 744.998992] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 745.006246] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 745.013501] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 745.020773] CPU: 1 PID: 8532 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 745.028660] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 745.038009] Call Trace: [ 745.040600] dump_stack+0x1fc/0x2ef [ 745.044321] should_fail.cold+0xa/0xf [ 745.048133] ? setup_fault_attr+0x200/0x200 [ 745.052470] ? lock_acquire+0x170/0x3c0 [ 745.056457] __should_failslab+0x115/0x180 [ 745.060696] should_failslab+0x5/0x10 [ 745.064488] kmem_cache_alloc+0x277/0x370 [ 745.068620] skb_clone+0x151/0x3d0 [ 745.072144] netlink_broadcast_filtered+0x8e5/0xbc0 [ 745.077144] netlink_broadcast+0x35/0x40 [ 745.081188] kobject_uevent_env+0xa56/0x1480 [ 745.085582] ? nbd_size_update+0x28a/0x660 [ 745.089798] ? queue_work_on+0x11a/0x1f0 [ 745.093858] nbd_start_device+0x811/0xd60 [ 745.098437] nbd_ioctl+0x62c/0xbe0 [ 745.101969] ? _copy_from_user+0xd2/0x130 [ 745.106104] ? nbd_disconnect_and_put+0x190/0x190 [ 745.110948] ? __lock_acquire+0x6de/0x3ff0 [ 745.115190] ? nbd_disconnect_and_put+0x190/0x190 [ 745.120033] blkdev_ioctl+0x5cb/0x1a80 [ 745.123913] ? blkpg_ioctl+0x9d0/0x9d0 [ 745.127792] ? get_pid_task+0xf4/0x190 [ 745.131671] ? mark_held_locks+0xf0/0xf0 [ 745.135713] ? proc_fail_nth_write+0x95/0x1d0 [ 745.140194] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 745.145289] ? __fdget_pos+0x26f/0x310 [ 745.149177] block_ioctl+0xe9/0x130 [ 745.152788] ? blkdev_fallocate+0x3f0/0x3f0 [ 745.157093] do_vfs_ioctl+0xcdb/0x12e0 [ 745.160967] ? lock_downgrade+0x720/0x720 [ 745.165103] ? check_preemption_disabled+0x41/0x280 [ 745.170116] ? ioctl_preallocate+0x200/0x200 [ 745.174525] ? __fget+0x356/0x510 [ 745.177974] ? do_dup2+0x450/0x450 [ 745.181495] ? vfs_write+0x393/0x540 [ 745.185190] ? fput+0x2b/0x190 [ 745.188372] ksys_ioctl+0x9b/0xc0 [ 745.191808] __x64_sys_ioctl+0x6f/0xb0 [ 745.195679] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 745.200242] do_syscall_64+0xf9/0x620 [ 745.204024] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 745.209197] RIP: 0033:0x7f03750e1089 [ 745.212898] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 745.231785] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 745.239486] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 745.246737] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 745.253985] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 745.261236] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 745.268487] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 745.277960] block nbd5: shutting down sockets executing program executing program [ 745.283150] block nbd2: shutting down sockets [ 745.284429] block nbd1: shutting down sockets [ 745.293662] block nbd0: Could not allocate knbd recv work queue. [ 745.301262] block nbd0: shutting down sockets [ 745.306028] block nbd4: Could not allocate knbd recv work queue. [ 745.315945] FAULT_INJECTION: forcing a failure. [ 745.315945] name failslab, interval 1, probability 0, space 0, times 0 [ 745.328161] block nbd4: shutting down sockets executing program executing program executing program [ 745.334796] CPU: 0 PID: 8547 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 745.342679] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 745.352027] Call Trace: [ 745.354617] dump_stack+0x1fc/0x2ef [ 745.358249] should_fail.cold+0xa/0xf [ 745.362046] ? setup_fault_attr+0x200/0x200 [ 745.366362] ? lock_acquire+0x170/0x3c0 [ 745.370339] __should_failslab+0x115/0x180 [ 745.374565] should_failslab+0x5/0x10 [ 745.378360] kmem_cache_alloc+0x277/0x370 [ 745.382505] __d_alloc+0x2b/0xa10 [ 745.385960] ? __bpf_address_lookup+0x330/0x330 [ 745.390624] ? check_preemption_disabled+0x41/0x280 [ 745.395627] d_alloc+0x4a/0x230 [ 745.398901] d_alloc_parallel+0xeb/0x19e0 [ 745.403049] ? mark_held_locks+0xf0/0xf0 [ 745.407109] ? __d_lookup_rcu+0x6b0/0x6b0 [ 745.411264] ? mark_held_locks+0xf0/0xf0 [ 745.415314] ? __lockdep_init_map+0x100/0x5a0 [ 745.419787] ? __lockdep_init_map+0x100/0x5a0 [ 745.424264] __lookup_slow+0x18d/0x4a0 [ 745.428133] ? check_preemption_disabled+0x41/0x280 [ 745.433131] ? follow_dotdot_rcu+0x1040/0x1040 [ 745.437695] ? __d_lookup+0x411/0x710 [ 745.441490] ? d_lookup+0x18e/0x250 [ 745.445109] lookup_one_len+0x163/0x190 [ 745.449072] ? try_lookup_one_len+0x180/0x180 [ 745.453564] start_creating+0xc9/0x220 [ 745.457448] __debugfs_create_file+0x5e/0x480 [ 745.461933] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 745.467106] ? kvm_clock_get_cycles+0x14/0x30 [ 745.471581] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 745.476409] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 745.481322] ? init_srcu_struct_fields+0xca6/0x1190 [ 745.486326] ? srcu_reschedule+0x120/0x120 [ 745.490539] ? __raw_spin_lock_init+0x28/0x100 [ 745.495104] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 745.499859] ? nbd_clear_que+0x160/0x160 [ 745.503917] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 745.508950] ? workqueue_sysfs_register+0x391/0x3e0 [ 745.513965] ? blk_mq_init_queue+0xa0/0xa0 [ 745.518196] nbd_start_device+0x1f2/0xd60 [ 745.522327] ? security_capable+0x8f/0xc0 [ 745.526457] nbd_ioctl+0x62c/0xbe0 [ 745.529980] ? _copy_from_user+0xd2/0x130 [ 745.534112] ? nbd_disconnect_and_put+0x190/0x190 [ 745.538944] ? __lock_acquire+0x6de/0x3ff0 [ 745.543172] ? nbd_disconnect_and_put+0x190/0x190 [ 745.548004] blkdev_ioctl+0x5cb/0x1a80 [ 745.551879] ? blkpg_ioctl+0x9d0/0x9d0 [ 745.555755] ? get_pid_task+0xf4/0x190 [ 745.559628] ? mark_held_locks+0xf0/0xf0 [ 745.563670] ? proc_fail_nth_write+0x95/0x1d0 [ 745.568161] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 745.573077] ? __fdget_pos+0x26f/0x310 [ 745.576948] block_ioctl+0xe9/0x130 [ 745.580553] ? blkdev_fallocate+0x3f0/0x3f0 [ 745.584870] do_vfs_ioctl+0xcdb/0x12e0 [ 745.588745] ? lock_downgrade+0x720/0x720 [ 745.592880] ? check_preemption_disabled+0x41/0x280 [ 745.597884] ? ioctl_preallocate+0x200/0x200 [ 745.602276] ? __fget+0x356/0x510 [ 745.605715] ? do_dup2+0x450/0x450 [ 745.609248] ? vfs_write+0x393/0x540 [ 745.612951] ? fput+0x2b/0x190 [ 745.616131] ksys_ioctl+0x9b/0xc0 [ 745.619572] __x64_sys_ioctl+0x6f/0xb0 [ 745.623442] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 745.628017] do_syscall_64+0xf9/0x620 [ 745.631809] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 745.636977] RIP: 0033:0x7f03750e1089 [ 745.640670] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 745.659641] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 745.667338] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 745.674588] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 executing program [ 745.681837] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 745.689095] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 745.696353] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 745.710146] block nbd3: shutting down sockets [ 745.727763] block nbd2: Could not allocate knbd recv work queue. executing program [ 745.736036] block nbd2: shutting down sockets [ 745.753304] block nbd1: Device being setup by another task [ 745.757192] block nbd0: Device being setup by another task [ 745.759009] block nbd5: Device being setup by another task [ 745.765557] block nbd4: Device being setup by another task [ 745.770671] block nbd0: Could not allocate knbd recv work queue. executing program executing program executing program executing program [ 745.783783] block nbd4: Could not allocate knbd recv work queue. [ 745.784051] block nbd5: Could not allocate knbd recv work queue. [ 745.791119] block nbd4: shutting down sockets [ 745.802293] block nbd1: shutting down sockets [ 745.802773] block nbd5: shutting down sockets [ 745.807369] block nbd0: shutting down sockets [ 745.823807] block nbd2: Device being setup by another task [ 745.829998] FAULT_INJECTION: forcing a failure. [ 745.829998] name failslab, interval 1, probability 0, space 0, times 0 [ 745.841425] CPU: 0 PID: 8588 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 745.849296] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 745.858627] Call Trace: [ 745.861210] dump_stack+0x1fc/0x2ef [ 745.864830] should_fail.cold+0xa/0xf [ 745.868613] ? setup_fault_attr+0x200/0x200 [ 745.872914] ? lock_acquire+0x170/0x3c0 [ 745.876874] __should_failslab+0x115/0x180 [ 745.881090] should_failslab+0x5/0x10 [ 745.884887] kmem_cache_alloc_node+0x245/0x3b0 [ 745.889461] __alloc_skb+0x71/0x560 [ 745.893081] alloc_uevent_skb+0x7b/0x210 [ 745.897137] kobject_uevent_env+0xa90/0x1480 [ 745.901531] ? nbd_size_update+0x28a/0x660 [ 745.905745] ? queue_work_on+0x11a/0x1f0 [ 745.909785] nbd_start_device+0x811/0xd60 [ 745.913916] nbd_ioctl+0x62c/0xbe0 [ 745.917440] ? _copy_from_user+0xd2/0x130 [ 745.921569] ? nbd_disconnect_and_put+0x190/0x190 [ 745.926397] ? __lock_acquire+0x6de/0x3ff0 [ 745.930619] ? nbd_disconnect_and_put+0x190/0x190 [ 745.935441] blkdev_ioctl+0x5cb/0x1a80 [ 745.939317] ? blkpg_ioctl+0x9d0/0x9d0 [ 745.943194] ? get_pid_task+0xf4/0x190 [ 745.947066] ? mark_held_locks+0xf0/0xf0 [ 745.951108] ? proc_fail_nth_write+0x95/0x1d0 [ 745.955583] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 745.960492] ? __fdget_pos+0x26f/0x310 [ 745.964364] block_ioctl+0xe9/0x130 [ 745.968414] ? blkdev_fallocate+0x3f0/0x3f0 [ 745.972720] do_vfs_ioctl+0xcdb/0x12e0 [ 745.976590] ? lock_downgrade+0x720/0x720 [ 745.980718] ? check_preemption_disabled+0x41/0x280 [ 745.985712] ? ioctl_preallocate+0x200/0x200 [ 745.990101] ? __fget+0x356/0x510 [ 745.993536] ? do_dup2+0x450/0x450 [ 745.997070] ? vfs_write+0x393/0x540 [ 746.000773] ? fput+0x2b/0x190 [ 746.003957] ksys_ioctl+0x9b/0xc0 [ 746.007390] __x64_sys_ioctl+0x6f/0xb0 [ 746.011264] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 746.015843] do_syscall_64+0xf9/0x620 [ 746.019639] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 746.024818] RIP: 0033:0x7f03750e1089 [ 746.028523] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 746.047408] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 746.055100] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 746.062386] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 746.069634] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 746.076889] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 746.084179] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 746.093900] FAULT_INJECTION: forcing a failure. [ 746.093900] name failslab, interval 1, probability 0, space 0, times 0 [ 746.105939] CPU: 1 PID: 8583 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 746.113818] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 746.123161] Call Trace: [ 746.125733] dump_stack+0x1fc/0x2ef [ 746.129343] should_fail.cold+0xa/0xf [ 746.133126] ? setup_fault_attr+0x200/0x200 [ 746.137431] ? lock_acquire+0x170/0x3c0 [ 746.141418] __should_failslab+0x115/0x180 [ 746.145638] should_failslab+0x5/0x10 [ 746.149418] kmem_cache_alloc+0x277/0x370 [ 746.153547] skb_clone+0x151/0x3d0 [ 746.157070] netlink_broadcast_filtered+0x8e5/0xbc0 [ 746.162069] netlink_broadcast+0x35/0x40 [ 746.166113] kobject_uevent_env+0xa56/0x1480 [ 746.170850] ? nbd_size_update+0x28a/0x660 [ 746.175061] ? queue_work_on+0x11a/0x1f0 [ 746.179101] nbd_start_device+0x811/0xd60 [ 746.183237] nbd_ioctl+0x62c/0xbe0 [ 746.186756] ? _copy_from_user+0xd2/0x130 [ 746.190884] ? nbd_disconnect_and_put+0x190/0x190 [ 746.195710] ? __lock_acquire+0x6de/0x3ff0 [ 746.199925] ? nbd_disconnect_and_put+0x190/0x190 [ 746.204748] blkdev_ioctl+0x5cb/0x1a80 [ 746.208613] ? blkpg_ioctl+0x9d0/0x9d0 [ 746.212480] ? get_pid_task+0xf4/0x190 [ 746.216350] ? mark_held_locks+0xf0/0xf0 [ 746.220391] ? proc_fail_nth_write+0x95/0x1d0 [ 746.224866] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 746.229774] ? __fdget_pos+0x26f/0x310 [ 746.233646] block_ioctl+0xe9/0x130 [ 746.237249] ? blkdev_fallocate+0x3f0/0x3f0 [ 746.241549] do_vfs_ioctl+0xcdb/0x12e0 [ 746.245414] ? lock_downgrade+0x720/0x720 [ 746.249542] ? check_preemption_disabled+0x41/0x280 [ 746.254536] ? ioctl_preallocate+0x200/0x200 [ 746.258921] ? __fget+0x356/0x510 [ 746.262370] ? do_dup2+0x450/0x450 [ 746.265889] ? vfs_write+0x393/0x540 [ 746.269842] ? fput+0x2b/0x190 [ 746.273016] ksys_ioctl+0x9b/0xc0 [ 746.276452] __x64_sys_ioctl+0x6f/0xb0 [ 746.280318] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 746.284900] do_syscall_64+0xf9/0x620 [ 746.288682] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 746.293851] RIP: 0033:0x7f03750e1089 [ 746.297542] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 746.316574] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 746.324261] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 746.331512] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 746.338770] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 746.346022] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 746.353276] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 746.392981] block nbd1: Device being setup by another task [ 746.392988] block nbd4: Device being setup by another task [ 746.393224] block nbd0: Device being setup by another task [ 746.398742] block nbd5: Device being setup by another task [ 746.409974] block nbd1: Could not allocate knbd recv work queue. [ 746.415907] block nbd4: Could not allocate knbd recv work queue. [ 746.424130] block nbd1: shutting down sockets [ 746.428224] block nbd0: Could not allocate knbd recv work queue. executing program executing program executing program executing program [ 746.439586] block nbd5: Could not allocate knbd recv work queue. [ 746.441776] block nbd0: shutting down sockets [ 746.450411] block nbd5: shutting down sockets [ 746.452279] block nbd4: shutting down sockets executing program executing program [ 746.527913] block nbd2: shutting down sockets [ 746.528359] block nbd3: shutting down sockets [ 746.540767] FAULT_INJECTION: forcing a failure. [ 746.540767] name failslab, interval 1, probability 0, space 0, times 0 [ 746.552601] CPU: 1 PID: 8618 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 746.560484] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 746.569829] Call Trace: [ 746.572413] dump_stack+0x1fc/0x2ef [ 746.576034] should_fail.cold+0xa/0xf [ 746.579828] ? setup_fault_attr+0x200/0x200 [ 746.584133] ? __should_failslab+0x91/0x180 [ 746.588434] __should_failslab+0x115/0x180 [ 746.592664] should_failslab+0x5/0x10 [ 746.596463] kmem_cache_alloc_node+0x245/0x3b0 [ 746.601035] __alloc_skb+0x71/0x560 [ 746.604655] alloc_uevent_skb+0x7b/0x210 [ 746.608726] kobject_uevent_env+0xa90/0x1480 [ 746.613118] ? nbd_size_update+0x28a/0x660 [ 746.617335] ? queue_work_on+0x11a/0x1f0 [ 746.621389] nbd_start_device+0x811/0xd60 [ 746.625536] nbd_ioctl+0x62c/0xbe0 [ 746.629061] ? _copy_from_user+0xd2/0x130 [ 746.633194] ? nbd_disconnect_and_put+0x190/0x190 [ 746.638033] ? __lock_acquire+0x6de/0x3ff0 [ 746.642257] ? nbd_disconnect_and_put+0x190/0x190 [ 746.647088] blkdev_ioctl+0x5cb/0x1a80 [ 746.650967] ? blkpg_ioctl+0x9d0/0x9d0 [ 746.654836] ? get_pid_task+0xf4/0x190 [ 746.658705] ? mark_held_locks+0xf0/0xf0 [ 746.662746] ? proc_fail_nth_write+0x95/0x1d0 [ 746.667236] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 746.672147] ? __fdget_pos+0x26f/0x310 [ 746.676018] block_ioctl+0xe9/0x130 [ 746.679622] ? blkdev_fallocate+0x3f0/0x3f0 [ 746.683935] do_vfs_ioctl+0xcdb/0x12e0 [ 746.687816] ? lock_downgrade+0x720/0x720 [ 746.691945] ? check_preemption_disabled+0x41/0x280 [ 746.696942] ? ioctl_preallocate+0x200/0x200 [ 746.701341] ? __fget+0x356/0x510 [ 746.704780] ? do_dup2+0x450/0x450 [ 746.708308] ? vfs_write+0x393/0x540 [ 746.712005] ? fput+0x2b/0x190 [ 746.715187] ksys_ioctl+0x9b/0xc0 [ 746.718627] __x64_sys_ioctl+0x6f/0xb0 [ 746.722495] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 746.727057] do_syscall_64+0xf9/0x620 [ 746.730841] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 746.736010] RIP: 0033:0x7f03750e1089 [ 746.739710] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 746.758595] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 746.766282] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 746.773532] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 746.780795] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 746.788055] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 746.795306] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 746.806081] block nbd1: Could not allocate knbd recv work queue. [ 746.813954] FAULT_INJECTION: forcing a failure. [ 746.813954] name fail_page_alloc, interval 1, probability 0, space 0, times 0 executing program [ 746.814480] block nbd1: shutting down sockets [ 746.825758] CPU: 0 PID: 8617 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 746.825764] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 746.825768] Call Trace: [ 746.825788] dump_stack+0x1fc/0x2ef [ 746.825806] should_fail.cold+0xa/0xf [ 746.825824] ? setup_fault_attr+0x200/0x200 [ 746.825840] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 746.825856] ? __wake_up_common_lock+0xe0/0x170 [ 746.825874] __alloc_pages_nodemask+0x239/0x2890 [ 746.825885] ? d_add+0x393/0x650 [ 746.825906] ? __lock_acquire+0x6de/0x3ff0 [ 746.825928] ? _raw_spin_unlock+0x29/0x40 [ 746.825943] ? gfp_pfmemalloc_allowed+0x150/0x150 [ 746.825963] ? __lookup_slow+0x298/0x4a0 [ 746.825979] ? follow_dotdot_rcu+0x1040/0x1040 [ 746.825998] ? __d_lookup+0x411/0x710 [ 746.826017] cache_grow_begin+0xa4/0x8a0 [ 746.909862] ? setup_fault_attr+0x200/0x200 [ 746.914189] ? cache_alloc_pfmemalloc+0x1e/0x140 [ 746.918936] cache_alloc_refill+0x273/0x340 [ 746.923245] kmem_cache_alloc+0x346/0x370 executing program [ 746.927387] alloc_inode+0xab/0x180 [ 746.930998] new_inode+0x1d/0xf0 [ 746.934347] debugfs_get_inode+0x1a/0x130 [ 746.936713] block nbd4: shutting down sockets [ 746.938483] __debugfs_create_file+0xb2/0x480 [ 746.938503] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 746.938517] ? kvm_clock_get_cycles+0x14/0x30 [ 746.957137] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 746.961977] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 746.966891] ? init_srcu_struct_fields+0xca6/0x1190 [ 746.971893] ? srcu_reschedule+0x120/0x120 [ 746.976124] ? __raw_spin_lock_init+0x28/0x100 [ 746.980698] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 746.985439] ? nbd_clear_que+0x160/0x160 [ 746.989484] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 746.994484] ? workqueue_sysfs_register+0x391/0x3e0 [ 746.999496] ? blk_mq_init_queue+0xa0/0xa0 [ 747.003725] ? apparmor_sb_mount+0x970/0x970 [ 747.008119] nbd_start_device+0x1f2/0xd60 [ 747.012260] ? security_capable+0x8f/0xc0 [ 747.016408] nbd_ioctl+0x62c/0xbe0 [ 747.019936] ? _copy_from_user+0xd2/0x130 [ 747.024073] ? nbd_disconnect_and_put+0x190/0x190 [ 747.028917] ? __lock_acquire+0x6de/0x3ff0 [ 747.033142] ? nbd_disconnect_and_put+0x190/0x190 [ 747.037968] blkdev_ioctl+0x5cb/0x1a80 [ 747.041841] ? blkpg_ioctl+0x9d0/0x9d0 [ 747.045716] ? get_pid_task+0xf4/0x190 [ 747.049592] ? mark_held_locks+0xf0/0xf0 [ 747.053655] ? proc_fail_nth_write+0x95/0x1d0 [ 747.058139] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 747.063048] ? __fdget_pos+0x26f/0x310 [ 747.066919] block_ioctl+0xe9/0x130 [ 747.070524] ? blkdev_fallocate+0x3f0/0x3f0 [ 747.074830] do_vfs_ioctl+0xcdb/0x12e0 [ 747.078710] ? lock_downgrade+0x720/0x720 [ 747.082843] ? check_preemption_disabled+0x41/0x280 [ 747.087945] ? ioctl_preallocate+0x200/0x200 [ 747.092353] ? __fget+0x356/0x510 [ 747.095795] ? do_dup2+0x450/0x450 [ 747.099322] ? vfs_write+0x393/0x540 [ 747.103018] ? fput+0x2b/0x190 [ 747.106197] ksys_ioctl+0x9b/0xc0 [ 747.109631] __x64_sys_ioctl+0x6f/0xb0 [ 747.113500] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 747.118075] do_syscall_64+0xf9/0x620 [ 747.121867] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 747.127036] RIP: 0033:0x7f03750e1089 [ 747.130729] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 747.149614] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 747.157309] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 747.164570] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 747.171828] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 747.179077] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 747.186331] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 747.205103] block nbd0: shutting down sockets [ 747.213837] block nbd2: Device being setup by another task [ 747.219660] block nbd2: Could not allocate knbd recv work queue. executing program [ 747.227078] FAULT_INJECTION: forcing a failure. [ 747.227078] name failslab, interval 1, probability 0, space 0, times 0 [ 747.228631] block nbd2: shutting down sockets [ 747.239139] block nbd4: Device being setup by another task [ 747.243031] block nbd3: Device being setup by another task [ 747.248726] block nbd1: Device being setup by another task [ 747.256428] block nbd3: Could not allocate knbd recv work queue. [ 747.260950] block nbd4: Could not allocate knbd recv work queue. [ 747.268276] block nbd3: shutting down sockets [ 747.273999] block nbd4: shutting down sockets executing program executing program [ 747.283122] block nbd1: Could not allocate knbd recv work queue. [ 747.291377] block nbd1: shutting down sockets [ 747.296682] CPU: 1 PID: 8628 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 747.304579] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 747.313921] Call Trace: [ 747.316495] dump_stack+0x1fc/0x2ef [ 747.320106] should_fail.cold+0xa/0xf [ 747.323888] ? setup_fault_attr+0x200/0x200 [ 747.328190] ? lock_acquire+0x170/0x3c0 [ 747.332152] __should_failslab+0x115/0x180 [ 747.336374] should_failslab+0x5/0x10 [ 747.340303] kmem_cache_alloc+0x277/0x370 [ 747.344434] __d_alloc+0x2b/0xa10 [ 747.347872] ? __bpf_address_lookup+0x330/0x330 [ 747.352529] ? check_preemption_disabled+0x41/0x280 [ 747.357530] d_alloc+0x4a/0x230 [ 747.360794] d_alloc_parallel+0xeb/0x19e0 [ 747.364928] ? mark_held_locks+0xf0/0xf0 [ 747.368972] ? __d_lookup_rcu+0x6b0/0x6b0 [ 747.373104] ? mark_held_locks+0xf0/0xf0 [ 747.377145] ? __lockdep_init_map+0x100/0x5a0 [ 747.381625] ? __lockdep_init_map+0x100/0x5a0 [ 747.386105] __lookup_slow+0x18d/0x4a0 [ 747.389974] ? check_preemption_disabled+0x41/0x280 [ 747.394979] ? follow_dotdot_rcu+0x1040/0x1040 [ 747.399553] ? __d_lookup+0x411/0x710 [ 747.403356] ? d_lookup+0x18e/0x250 [ 747.406981] lookup_one_len+0x163/0x190 [ 747.410937] ? try_lookup_one_len+0x180/0x180 [ 747.415418] start_creating+0xc9/0x220 [ 747.419287] __debugfs_create_file+0x5e/0x480 [ 747.423765] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 747.428936] ? kvm_clock_get_cycles+0x14/0x30 [ 747.433413] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 747.438239] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 747.443147] ? init_srcu_struct_fields+0xca6/0x1190 [ 747.448142] ? srcu_reschedule+0x120/0x120 [ 747.452359] ? __raw_spin_lock_init+0x28/0x100 [ 747.456924] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 747.461664] ? nbd_clear_que+0x160/0x160 [ 747.465709] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 747.470721] ? workqueue_sysfs_register+0x391/0x3e0 [ 747.475723] ? blk_mq_init_queue+0xa0/0xa0 [ 747.479945] nbd_start_device+0x1f2/0xd60 [ 747.484078] ? security_capable+0x8f/0xc0 [ 747.488210] nbd_ioctl+0x62c/0xbe0 [ 747.491734] ? _copy_from_user+0xd2/0x130 [ 747.495862] ? nbd_disconnect_and_put+0x190/0x190 [ 747.500698] ? __lock_acquire+0x6de/0x3ff0 [ 747.504925] ? nbd_disconnect_and_put+0x190/0x190 [ 747.509754] blkdev_ioctl+0x5cb/0x1a80 [ 747.513620] ? blkpg_ioctl+0x9d0/0x9d0 [ 747.517485] ? get_pid_task+0xf4/0x190 [ 747.521365] ? mark_held_locks+0xf0/0xf0 [ 747.525413] ? proc_fail_nth_write+0x95/0x1d0 [ 747.529886] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 747.534793] ? __fdget_pos+0x26f/0x310 [ 747.538667] block_ioctl+0xe9/0x130 [ 747.542277] ? blkdev_fallocate+0x3f0/0x3f0 [ 747.546582] do_vfs_ioctl+0xcdb/0x12e0 [ 747.550452] ? lock_downgrade+0x720/0x720 [ 747.554580] ? check_preemption_disabled+0x41/0x280 [ 747.559581] ? ioctl_preallocate+0x200/0x200 [ 747.563986] ? __fget+0x356/0x510 [ 747.567426] ? do_dup2+0x450/0x450 [ 747.571293] ? vfs_write+0x393/0x540 [ 747.574989] ? fput+0x2b/0x190 [ 747.578164] ksys_ioctl+0x9b/0xc0 [ 747.581597] __x64_sys_ioctl+0x6f/0xb0 [ 747.585462] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 747.590023] do_syscall_64+0xf9/0x620 [ 747.593806] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 747.598973] RIP: 0033:0x7f03750e1089 [ 747.602667] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 747.621545] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 executing program executing program executing program [ 747.629229] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 747.636562] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 747.643807] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 747.651055] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 747.658303] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 747.674816] block nbd5: shutting down sockets executing program [ 747.713028] block nbd0: Device being setup by another task [ 747.717633] block nbd3: Device being setup by another task [ 747.718810] block nbd2: Device being setup by another task [ 747.725170] block nbd3: Could not allocate knbd recv work queue. [ 747.730478] block nbd0: Could not allocate knbd recv work queue. [ 747.739398] block nbd3: shutting down sockets [ 747.748405] block nbd2: Could not allocate knbd recv work queue. [ 747.754145] block nbd0: shutting down sockets [ 747.756413] block nbd2: shutting down sockets executing program executing program [ 747.784434] FAULT_INJECTION: forcing a failure. [ 747.784434] name failslab, interval 1, probability 0, space 0, times 0 [ 747.784640] FAULT_INJECTION: forcing a failure. [ 747.784640] name failslab, interval 1, probability 0, space 0, times 0 [ 747.796376] CPU: 0 PID: 8668 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 747.814931] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 747.824267] Call Trace: [ 747.826847] dump_stack+0x1fc/0x2ef [ 747.830468] should_fail.cold+0xa/0xf [ 747.834266] ? setup_fault_attr+0x200/0x200 [ 747.838667] ? lock_acquire+0x170/0x3c0 [ 747.842634] __should_failslab+0x115/0x180 [ 747.846860] should_failslab+0x5/0x10 [ 747.850648] __kmalloc+0x2ab/0x3c0 [ 747.854178] ? kobject_get_path+0xbf/0x240 [ 747.858408] kobject_get_path+0xbf/0x240 [ 747.862464] kobject_uevent_env+0x25c/0x1480 [ 747.866865] ? nbd_size_update+0x28a/0x660 [ 747.871089] ? queue_work_on+0x11a/0x1f0 [ 747.875142] nbd_start_device+0x811/0xd60 [ 747.879292] nbd_ioctl+0x62c/0xbe0 [ 747.882832] ? _copy_from_user+0xd2/0x130 [ 747.886976] ? nbd_disconnect_and_put+0x190/0x190 [ 747.891819] ? __lock_acquire+0x6de/0x3ff0 [ 747.896047] ? nbd_disconnect_and_put+0x190/0x190 [ 747.900876] blkdev_ioctl+0x5cb/0x1a80 [ 747.904754] ? blkpg_ioctl+0x9d0/0x9d0 [ 747.908639] ? get_pid_task+0xf4/0x190 [ 747.912524] ? mark_held_locks+0xf0/0xf0 [ 747.916574] ? proc_fail_nth_write+0x95/0x1d0 [ 747.921056] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 747.925974] ? __fdget_pos+0x26f/0x310 [ 747.929861] block_ioctl+0xe9/0x130 [ 747.933475] ? blkdev_fallocate+0x3f0/0x3f0 [ 747.937783] do_vfs_ioctl+0xcdb/0x12e0 [ 747.941657] ? lock_downgrade+0x720/0x720 [ 747.945795] ? check_preemption_disabled+0x41/0x280 [ 747.950798] ? ioctl_preallocate+0x200/0x200 [ 747.955205] ? __fget+0x356/0x510 [ 747.958649] ? do_dup2+0x450/0x450 [ 747.962174] ? vfs_write+0x393/0x540 [ 747.965879] ? fput+0x2b/0x190 [ 747.969063] ksys_ioctl+0x9b/0xc0 [ 747.972504] __x64_sys_ioctl+0x6f/0xb0 [ 747.976379] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 747.980946] do_syscall_64+0xf9/0x620 [ 747.984739] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 747.989911] RIP: 0033:0x7f03750e1089 [ 747.993619] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 748.012509] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 748.020215] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 748.027471] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 748.034727] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 748.041989] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 748.049246] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 748.056520] CPU: 1 PID: 8667 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 748.064403] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 748.073752] Call Trace: [ 748.076342] dump_stack+0x1fc/0x2ef [ 748.079978] should_fail.cold+0xa/0xf [ 748.083787] ? setup_fault_attr+0x200/0x200 [ 748.088192] ? lock_acquire+0x170/0x3c0 [ 748.092153] __should_failslab+0x115/0x180 [ 748.096373] should_failslab+0x5/0x10 [ 748.100153] kmem_cache_alloc_node+0x245/0x3b0 [ 748.104736] __alloc_skb+0x71/0x560 [ 748.108356] alloc_uevent_skb+0x7b/0x210 [ 748.112402] kobject_uevent_env+0xa90/0x1480 [ 748.116799] ? nbd_size_update+0x28a/0x660 [ 748.121017] ? queue_work_on+0x11a/0x1f0 [ 748.125071] nbd_start_device+0x811/0xd60 [ 748.129215] nbd_ioctl+0x62c/0xbe0 [ 748.132747] ? _copy_from_user+0xd2/0x130 [ 748.136885] ? nbd_disconnect_and_put+0x190/0x190 [ 748.141722] ? __lock_acquire+0x6de/0x3ff0 [ 748.145947] ? nbd_disconnect_and_put+0x190/0x190 [ 748.150773] blkdev_ioctl+0x5cb/0x1a80 [ 748.154642] ? blkpg_ioctl+0x9d0/0x9d0 [ 748.158514] ? get_pid_task+0xf4/0x190 [ 748.162387] ? mark_held_locks+0xf0/0xf0 [ 748.166515] ? proc_fail_nth_write+0x95/0x1d0 [ 748.170995] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 748.174265] block nbd1: shutting down sockets [ 748.175915] ? __fdget_pos+0x26f/0x310 executing program [ 748.175938] block_ioctl+0xe9/0x130 [ 748.187908] ? blkdev_fallocate+0x3f0/0x3f0 [ 748.192237] do_vfs_ioctl+0xcdb/0x12e0 [ 748.196134] ? lock_downgrade+0x720/0x720 [ 748.200275] ? check_preemption_disabled+0x41/0x280 [ 748.205277] ? ioctl_preallocate+0x200/0x200 [ 748.209673] ? __fget+0x356/0x510 [ 748.213121] ? do_dup2+0x450/0x450 [ 748.216645] ? vfs_write+0x393/0x540 [ 748.220344] ? fput+0x2b/0x190 [ 748.223523] ksys_ioctl+0x9b/0xc0 [ 748.226964] __x64_sys_ioctl+0x6f/0xb0 [ 748.230855] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 748.235448] do_syscall_64+0xf9/0x620 [ 748.239243] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 748.244416] RIP: 0033:0x7f03750e1089 [ 748.248117] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 748.267001] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 748.274701] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 748.281954] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 748.289206] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 748.296467] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 748.303734] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 748.312012] block nbd3: Could not allocate knbd recv work queue. [ 748.318387] FAULT_INJECTION: forcing a failure. [ 748.318387] name failslab, interval 1, probability 0, space 0, times 0 [ 748.318681] block nbd4: shutting down sockets [ 748.333875] block nbd0: Could not allocate knbd recv work queue. [ 748.334525] block nbd2: Could not allocate knbd recv work queue. [ 748.341426] block nbd0: shutting down sockets [ 748.347808] block nbd3: shutting down sockets [ 748.355618] CPU: 0 PID: 8670 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 748.357389] block nbd2: shutting down sockets [ 748.363494] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 748.363499] Call Trace: [ 748.363518] dump_stack+0x1fc/0x2ef [ 748.363536] should_fail.cold+0xa/0xf executing program executing program [ 748.363553] ? setup_fault_attr+0x200/0x200 [ 748.363568] ? lock_acquire+0x170/0x3c0 [ 748.363588] __should_failslab+0x115/0x180 [ 748.399837] should_failslab+0x5/0x10 [ 748.403623] kmem_cache_alloc_node+0x245/0x3b0 [ 748.408199] __alloc_skb+0x71/0x560 [ 748.411822] alloc_uevent_skb+0x7b/0x210 [ 748.415869] kobject_uevent_env+0xa90/0x1480 [ 748.420262] ? nbd_size_update+0x28a/0x660 [ 748.424490] ? queue_work_on+0x11a/0x1f0 [ 748.428536] nbd_start_device+0x811/0xd60 [ 748.432672] nbd_ioctl+0x62c/0xbe0 [ 748.436636] ? _copy_from_user+0xd2/0x130 [ 748.440772] ? nbd_disconnect_and_put+0x190/0x190 [ 748.445598] ? __lock_acquire+0x6de/0x3ff0 [ 748.449817] ? nbd_disconnect_and_put+0x190/0x190 [ 748.454639] blkdev_ioctl+0x5cb/0x1a80 [ 748.458508] ? blkpg_ioctl+0x9d0/0x9d0 [ 748.462374] ? get_pid_task+0xf4/0x190 [ 748.466242] ? mark_held_locks+0xf0/0xf0 [ 748.470283] ? proc_fail_nth_write+0x95/0x1d0 [ 748.474768] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 748.479681] ? __fdget_pos+0x26f/0x310 [ 748.483551] block_ioctl+0xe9/0x130 [ 748.487160] ? blkdev_fallocate+0x3f0/0x3f0 [ 748.491469] do_vfs_ioctl+0xcdb/0x12e0 [ 748.495347] ? lock_downgrade+0x720/0x720 [ 748.499475] ? check_preemption_disabled+0x41/0x280 [ 748.504472] ? ioctl_preallocate+0x200/0x200 [ 748.508862] ? __fget+0x356/0x510 [ 748.512295] ? do_dup2+0x450/0x450 [ 748.515816] ? vfs_write+0x393/0x540 [ 748.519512] ? fput+0x2b/0x190 [ 748.522695] ksys_ioctl+0x9b/0xc0 [ 748.526138] __x64_sys_ioctl+0x6f/0xb0 [ 748.530010] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 748.534580] do_syscall_64+0xf9/0x620 [ 748.538371] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 748.543545] RIP: 0033:0x7f03750e1089 [ 748.547250] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 748.566395] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 748.574086] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 executing program executing program [ 748.581337] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 748.588588] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 748.595837] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 748.603086] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 748.623207] block nbd5: shutting down sockets [ 748.643242] block nbd1: Device being setup by another task [ 748.672878] block nbd4: Device being setup by another task [ 748.679119] block nbd4: Could not allocate knbd recv work queue. [ 748.687780] FAULT_INJECTION: forcing a failure. executing program executing program [ 748.687780] name failslab, interval 1, probability 0, space 0, times 0 [ 748.699083] block nbd0: Device being setup by another task [ 748.704947] block nbd0: Could not allocate knbd recv work queue. [ 748.712490] block nbd0: shutting down sockets [ 748.713123] block nbd4: shutting down sockets [ 748.723917] FAULT_INJECTION: forcing a failure. [ 748.723917] name failslab, interval 1, probability 0, space 0, times 0 [ 748.729393] CPU: 0 PID: 8690 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 748.742981] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 748.752317] Call Trace: [ 748.754896] dump_stack+0x1fc/0x2ef [ 748.758525] should_fail.cold+0xa/0xf [ 748.762320] ? setup_fault_attr+0x200/0x200 [ 748.766633] ? lock_acquire+0x170/0x3c0 [ 748.770949] __should_failslab+0x115/0x180 [ 748.775180] should_failslab+0x5/0x10 [ 748.778974] __kmalloc_track_caller+0x2a6/0x3c0 [ 748.783633] ? kstrdup_const+0x53/0x80 [ 748.787513] kstrdup+0x36/0x70 [ 748.790703] kstrdup_const+0x53/0x80 [ 748.794412] __kernfs_new_node+0x9b/0x680 [ 748.798549] ? kfree+0xcc/0x210 [ 748.801824] ? kobject_add+0x10d/0x1c0 [ 748.805708] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 748.810462] ? nbd_start_device+0x1f2/0xd60 [ 748.814781] ? nbd_ioctl+0x62c/0xbe0 [ 748.818483] ? blkdev_ioctl+0x5cb/0x1a80 [ 748.822533] ? do_vfs_ioctl+0xcdb/0x12e0 [ 748.826582] ? __x64_sys_ioctl+0x6f/0xb0 [ 748.830635] ? do_syscall_64+0xf9/0x620 [ 748.834607] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 748.839963] ? debug_check_no_obj_freed+0x201/0x490 [ 748.844979] kernfs_create_dir_ns+0x9e/0x230 [ 748.849381] sysfs_create_dir_ns+0x127/0x280 [ 748.853781] ? sysfs_create_mount_point+0xb0/0xb0 [ 748.858617] ? mark_held_locks+0xa6/0xf0 [ 748.862668] ? kfree+0x110/0x210 [ 748.866029] ? kfree_const+0x51/0x60 [ 748.869737] kobject_add_internal+0x2a5/0x9c0 [ 748.874234] kobject_add+0x150/0x1c0 [ 748.877947] ? kset_create_and_add+0x1a0/0x1a0 [ 748.882522] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 748.887187] ? lock_downgrade+0x720/0x720 [ 748.891328] ? kernfs_put.part.0+0x225/0x590 [ 748.895732] blk_mq_register_hctx+0x23c/0x2c0 [ 748.900230] blk_mq_sysfs_register+0x143/0x1c0 [ 748.904898] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 748.909908] ? workqueue_sysfs_register+0x391/0x3e0 [ 748.914919] ? blk_mq_init_queue+0xa0/0xa0 [ 748.919156] nbd_start_device+0x1f2/0xd60 [ 748.923294] ? security_capable+0x8f/0xc0 [ 748.927439] nbd_ioctl+0x62c/0xbe0 [ 748.930973] ? _copy_from_user+0xd2/0x130 [ 748.935117] ? nbd_disconnect_and_put+0x190/0x190 [ 748.939961] ? __lock_acquire+0x6de/0x3ff0 [ 748.944196] ? nbd_disconnect_and_put+0x190/0x190 [ 748.949029] blkdev_ioctl+0x5cb/0x1a80 [ 748.952907] ? blkpg_ioctl+0x9d0/0x9d0 [ 748.956784] ? get_pid_task+0xf4/0x190 [ 748.960685] ? mark_held_locks+0xf0/0xf0 [ 748.964736] ? proc_fail_nth_write+0x95/0x1d0 [ 748.969222] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 748.974142] ? __fdget_pos+0x26f/0x310 [ 748.978027] block_ioctl+0xe9/0x130 [ 748.981641] ? blkdev_fallocate+0x3f0/0x3f0 [ 748.985954] do_vfs_ioctl+0xcdb/0x12e0 [ 748.989832] ? lock_downgrade+0x720/0x720 [ 748.993969] ? check_preemption_disabled+0x41/0x280 [ 748.998975] ? ioctl_preallocate+0x200/0x200 [ 749.003374] ? __fget+0x356/0x510 [ 749.006822] ? do_dup2+0x450/0x450 [ 749.010353] ? vfs_write+0x393/0x540 [ 749.014057] ? fput+0x2b/0x190 [ 749.017245] ksys_ioctl+0x9b/0xc0 [ 749.020699] __x64_sys_ioctl+0x6f/0xb0 [ 749.024580] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 749.029150] do_syscall_64+0xf9/0x620 [ 749.032947] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 749.038123] RIP: 0033:0x7f03750e1089 [ 749.041829] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 749.060719] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 749.068430] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 749.075700] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 749.082969] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 749.090239] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 749.097508] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 749.104802] CPU: 1 PID: 8707 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 749.112691] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 749.122042] Call Trace: [ 749.124636] dump_stack+0x1fc/0x2ef [ 749.128275] should_fail.cold+0xa/0xf [ 749.132084] ? setup_fault_attr+0x200/0x200 [ 749.136413] ? lock_acquire+0x170/0x3c0 [ 749.140401] __should_failslab+0x115/0x180 executing program executing program [ 749.144642] should_failslab+0x5/0x10 [ 749.146402] kobject_add_internal failed for cpu0 (error: -12 parent: 0) [ 749.148441] __kmalloc+0x2ab/0x3c0 [ 749.148458] ? kobject_get_path+0xbf/0x240 [ 749.148476] kobject_get_path+0xbf/0x240 [ 749.148495] kobject_uevent_env+0x25c/0x1480 [ 749.148512] ? nbd_size_update+0x28a/0x660 [ 749.148528] ? queue_work_on+0x11a/0x1f0 [ 749.162263] block nbd1: shutting down sockets [ 749.163012] nbd_start_device+0x811/0xd60 [ 749.163034] nbd_ioctl+0x62c/0xbe0 [ 749.163049] ? _copy_from_user+0xd2/0x130 [ 749.163064] ? nbd_disconnect_and_put+0x190/0x190 [ 749.163083] ? __lock_acquire+0x6de/0x3ff0 [ 749.205091] ? nbd_disconnect_and_put+0x190/0x190 [ 749.209930] blkdev_ioctl+0x5cb/0x1a80 [ 749.213804] ? blkpg_ioctl+0x9d0/0x9d0 [ 749.217677] ? get_pid_task+0xf4/0x190 [ 749.221548] ? mark_held_locks+0xf0/0xf0 [ 749.225597] ? proc_fail_nth_write+0x95/0x1d0 [ 749.230165] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 749.235092] ? __fdget_pos+0x26f/0x310 [ 749.238978] block_ioctl+0xe9/0x130 [ 749.242597] ? blkdev_fallocate+0x3f0/0x3f0 [ 749.246916] do_vfs_ioctl+0xcdb/0x12e0 [ 749.250789] ? lock_downgrade+0x720/0x720 [ 749.254920] ? check_preemption_disabled+0x41/0x280 [ 749.259926] ? ioctl_preallocate+0x200/0x200 [ 749.264328] ? __fget+0x356/0x510 [ 749.267767] ? do_dup2+0x450/0x450 [ 749.271291] ? vfs_write+0x393/0x540 [ 749.274987] ? fput+0x2b/0x190 [ 749.278167] ksys_ioctl+0x9b/0xc0 [ 749.281605] __x64_sys_ioctl+0x6f/0xb0 [ 749.285478] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 749.290042] do_syscall_64+0xf9/0x620 [ 749.293843] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 749.299032] RIP: 0033:0x7f03750e1089 [ 749.302743] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 749.321627] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 749.329438] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 749.336697] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 executing program [ 749.343967] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 749.351227] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 749.358478] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 749.366755] block nbd3: shutting down sockets [ 749.383708] FAULT_INJECTION: forcing a failure. [ 749.383708] name failslab, interval 1, probability 0, space 0, times 0 [ 749.397775] block nbd5: Device being setup by another task [ 749.397841] CPU: 1 PID: 8706 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 749.404202] block nbd5: Could not allocate knbd recv work queue. [ 749.411274] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 749.411279] Call Trace: [ 749.411299] dump_stack+0x1fc/0x2ef [ 749.411317] should_fail.cold+0xa/0xf [ 749.411333] ? setup_fault_attr+0x200/0x200 [ 749.424847] block nbd5: shutting down sockets [ 749.426815] ? lock_acquire+0x170/0x3c0 [ 749.426835] __should_failslab+0x115/0x180 [ 749.426852] should_failslab+0x5/0x10 [ 749.457619] kmem_cache_alloc+0x277/0x370 [ 749.461757] __d_alloc+0x2b/0xa10 [ 749.465193] ? __bpf_address_lookup+0x330/0x330 [ 749.469849] ? check_preemption_disabled+0x41/0x280 [ 749.474851] d_alloc+0x4a/0x230 [ 749.478115] d_alloc_parallel+0xeb/0x19e0 [ 749.482247] ? mark_held_locks+0xf0/0xf0 [ 749.486300] ? __d_lookup_rcu+0x6b0/0x6b0 [ 749.490438] ? mark_held_locks+0xf0/0xf0 [ 749.494506] ? __lockdep_init_map+0x100/0x5a0 [ 749.498983] ? __lockdep_init_map+0x100/0x5a0 [ 749.503463] __lookup_slow+0x18d/0x4a0 [ 749.507334] ? check_preemption_disabled+0x41/0x280 [ 749.512334] ? follow_dotdot_rcu+0x1040/0x1040 [ 749.516907] ? __d_lookup+0x411/0x710 [ 749.520701] ? d_lookup+0x18e/0x250 [ 749.524312] lookup_one_len+0x163/0x190 [ 749.528266] ? try_lookup_one_len+0x180/0x180 [ 749.532754] start_creating+0xc9/0x220 [ 749.536623] __debugfs_create_file+0x5e/0x480 [ 749.541101] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 749.546274] ? kvm_clock_get_cycles+0x14/0x30 [ 749.550762] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 749.555606] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 749.560518] ? init_srcu_struct_fields+0xca6/0x1190 [ 749.565551] ? srcu_reschedule+0x120/0x120 [ 749.569770] ? __raw_spin_lock_init+0x28/0x100 [ 749.574337] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 749.579087] ? nbd_clear_que+0x160/0x160 [ 749.583140] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 749.588139] ? workqueue_sysfs_register+0x391/0x3e0 [ 749.593139] ? blk_mq_init_queue+0xa0/0xa0 [ 749.597355] ? apparmor_sb_mount+0x970/0x970 [ 749.601748] nbd_start_device+0x1f2/0xd60 [ 749.605880] ? security_capable+0x8f/0xc0 [ 749.610024] nbd_ioctl+0x62c/0xbe0 [ 749.613561] ? _copy_from_user+0xd2/0x130 [ 749.617689] ? nbd_disconnect_and_put+0x190/0x190 [ 749.622519] ? __lock_acquire+0x6de/0x3ff0 [ 749.626739] ? nbd_disconnect_and_put+0x190/0x190 [ 749.631562] blkdev_ioctl+0x5cb/0x1a80 [ 749.635433] ? blkpg_ioctl+0x9d0/0x9d0 [ 749.639307] ? get_pid_task+0xf4/0x190 [ 749.643187] ? mark_held_locks+0xf0/0xf0 [ 749.647229] ? proc_fail_nth_write+0x95/0x1d0 [ 749.651704] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 749.656728] ? __fdget_pos+0x26f/0x310 [ 749.660600] block_ioctl+0xe9/0x130 [ 749.664206] ? blkdev_fallocate+0x3f0/0x3f0 [ 749.668946] do_vfs_ioctl+0xcdb/0x12e0 [ 749.672823] ? lock_downgrade+0x720/0x720 [ 749.677082] ? check_preemption_disabled+0x41/0x280 [ 749.682089] ? ioctl_preallocate+0x200/0x200 [ 749.686486] ? __fget+0x356/0x510 [ 749.689934] ? do_dup2+0x450/0x450 [ 749.693461] ? vfs_write+0x393/0x540 [ 749.697160] ? fput+0x2b/0x190 [ 749.700339] ksys_ioctl+0x9b/0xc0 [ 749.703807] __x64_sys_ioctl+0x6f/0xb0 [ 749.707683] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 749.712335] do_syscall_64+0xf9/0x620 [ 749.716122] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 749.721301] RIP: 0033:0x7f03750e1089 [ 749.725013] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 749.743899] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 749.751593] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 749.758843] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 749.766091] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 749.773341] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 749.780598] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 executing program executing program [ 749.794701] block nbd2: shutting down sockets [ 749.812840] block nbd0: Device being setup by another task [ 749.819003] block nbd0: Could not allocate knbd recv work queue. [ 749.822844] block nbd4: Device being setup by another task [ 749.830310] block nbd0: shutting down sockets [ 749.830932] block nbd1: Device being setup by another task [ 749.840950] block nbd3: Device being setup by another task executing program executing program executing program [ 749.846792] block nbd4: Could not allocate knbd recv work queue. [ 749.856126] block nbd4: shutting down sockets [ 749.861375] block nbd3: Could not allocate knbd recv work queue. [ 749.868906] block nbd3: shutting down sockets [ 749.873773] block nbd1: Could not allocate knbd recv work queue. [ 749.882120] block nbd1: shutting down sockets [ 749.889156] FAULT_INJECTION: forcing a failure. executing program [ 749.889156] name failslab, interval 1, probability 0, space 0, times 0 [ 749.902145] CPU: 1 PID: 8740 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 749.904163] FAULT_INJECTION: forcing a failure. [ 749.904163] name failslab, interval 1, probability 0, space 0, times 0 [ 749.910034] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 749.910040] Call Trace: [ 749.910059] dump_stack+0x1fc/0x2ef [ 749.910091] should_fail.cold+0xa/0xf [ 749.940556] ? setup_fault_attr+0x200/0x200 [ 749.944875] ? lock_acquire+0x170/0x3c0 [ 749.948844] __should_failslab+0x115/0x180 [ 749.953072] should_failslab+0x5/0x10 [ 749.956866] kmem_cache_alloc_node+0x245/0x3b0 [ 749.961446] __alloc_skb+0x71/0x560 [ 749.965078] alloc_uevent_skb+0x7b/0x210 [ 749.969142] kobject_uevent_env+0xa90/0x1480 [ 749.973549] ? nbd_size_update+0x28a/0x660 [ 749.977782] ? queue_work_on+0x11a/0x1f0 [ 749.981839] nbd_start_device+0x811/0xd60 [ 749.985985] nbd_ioctl+0x62c/0xbe0 [ 749.989519] ? _copy_from_user+0xd2/0x130 [ 749.993658] ? nbd_disconnect_and_put+0x190/0x190 [ 749.998497] ? __lock_acquire+0x6de/0x3ff0 [ 750.002809] ? nbd_disconnect_and_put+0x190/0x190 [ 750.007649] blkdev_ioctl+0x5cb/0x1a80 [ 750.011526] ? blkpg_ioctl+0x9d0/0x9d0 [ 750.015407] ? get_pid_task+0xf4/0x190 [ 750.019285] ? mark_held_locks+0xf0/0xf0 [ 750.023341] ? proc_fail_nth_write+0x95/0x1d0 [ 750.027828] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 750.032749] ? __fdget_pos+0x26f/0x310 [ 750.036639] block_ioctl+0xe9/0x130 [ 750.040254] ? blkdev_fallocate+0x3f0/0x3f0 [ 750.044573] do_vfs_ioctl+0xcdb/0x12e0 [ 750.048455] ? lock_downgrade+0x720/0x720 [ 750.052601] ? check_preemption_disabled+0x41/0x280 [ 750.057614] ? ioctl_preallocate+0x200/0x200 [ 750.062017] ? __fget+0x356/0x510 [ 750.065468] ? do_dup2+0x450/0x450 [ 750.069002] ? vfs_write+0x393/0x540 [ 750.072706] ? fput+0x2b/0x190 [ 750.075896] ksys_ioctl+0x9b/0xc0 [ 750.079345] __x64_sys_ioctl+0x6f/0xb0 [ 750.083228] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 750.087805] do_syscall_64+0xf9/0x620 [ 750.091604] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 750.096784] RIP: 0033:0x7f03750e1089 [ 750.100487] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 750.119375] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 750.127075] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 750.134334] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 750.141592] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 750.148847] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 750.156106] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 750.163384] CPU: 0 PID: 8745 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 750.171267] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 750.180618] Call Trace: [ 750.183211] dump_stack+0x1fc/0x2ef [ 750.186846] should_fail.cold+0xa/0xf [ 750.187981] FAULT_INJECTION: forcing a failure. [ 750.187981] name failslab, interval 1, probability 0, space 0, times 0 [ 750.190649] ? setup_fault_attr+0x200/0x200 [ 750.190665] ? lock_acquire+0x170/0x3c0 [ 750.190686] __should_failslab+0x115/0x180 [ 750.190701] should_failslab+0x5/0x10 [ 750.190719] __kmalloc+0x2ab/0x3c0 [ 750.221660] ? kobject_get_path+0xbf/0x240 [ 750.225894] kobject_get_path+0xbf/0x240 [ 750.229954] kobject_uevent_env+0x25c/0x1480 [ 750.234359] ? nbd_size_update+0x28a/0x660 [ 750.238585] ? queue_work_on+0x11a/0x1f0 [ 750.242642] nbd_start_device+0x811/0xd60 [ 750.246790] nbd_ioctl+0x62c/0xbe0 [ 750.250327] ? _copy_from_user+0xd2/0x130 [ 750.254468] ? nbd_disconnect_and_put+0x190/0x190 [ 750.259315] ? __lock_acquire+0x6de/0x3ff0 [ 750.263549] ? nbd_disconnect_and_put+0x190/0x190 [ 750.268390] blkdev_ioctl+0x5cb/0x1a80 [ 750.272272] ? blkpg_ioctl+0x9d0/0x9d0 [ 750.276152] ? get_pid_task+0xf4/0x190 [ 750.280060] ? mark_held_locks+0xf0/0xf0 [ 750.284125] ? proc_fail_nth_write+0x95/0x1d0 [ 750.288615] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 750.293535] ? __fdget_pos+0x26f/0x310 [ 750.295297] block nbd5: shutting down sockets [ 750.297427] block_ioctl+0xe9/0x130 [ 750.297439] ? blkdev_fallocate+0x3f0/0x3f0 [ 750.297453] do_vfs_ioctl+0xcdb/0x12e0 [ 750.297469] ? lock_downgrade+0x720/0x720 [ 750.317871] ? check_preemption_disabled+0x41/0x280 [ 750.322879] ? ioctl_preallocate+0x200/0x200 [ 750.327280] ? __fget+0x356/0x510 [ 750.330725] ? do_dup2+0x450/0x450 [ 750.334256] ? vfs_write+0x393/0x540 [ 750.337961] ? fput+0x2b/0x190 [ 750.341156] ksys_ioctl+0x9b/0xc0 [ 750.344601] __x64_sys_ioctl+0x6f/0xb0 [ 750.348478] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 750.353060] do_syscall_64+0xf9/0x620 [ 750.356862] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 750.362046] RIP: 0033:0x7f03750e1089 [ 750.365761] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 750.385004] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 750.392700] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 executing program [ 750.399960] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 750.407220] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 750.414481] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 750.421740] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 750.429016] CPU: 1 PID: 8742 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 750.430347] block nbd0: shutting down sockets [ 750.436894] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 750.436900] Call Trace: [ 750.436919] dump_stack+0x1fc/0x2ef [ 750.436936] should_fail.cold+0xa/0xf [ 750.436958] ? setup_fault_attr+0x200/0x200 [ 750.436972] ? lock_acquire+0x170/0x3c0 [ 750.436989] __should_failslab+0x115/0x180 [ 750.437007] should_failslab+0x5/0x10 [ 750.477107] kmem_cache_alloc_node+0x245/0x3b0 [ 750.481767] __alloc_skb+0x71/0x560 [ 750.485382] alloc_uevent_skb+0x7b/0x210 [ 750.489426] kobject_uevent_env+0xa90/0x1480 [ 750.493819] ? nbd_size_update+0x28a/0x660 [ 750.498036] ? queue_work_on+0x11a/0x1f0 [ 750.502090] nbd_start_device+0x811/0xd60 [ 750.506227] nbd_ioctl+0x62c/0xbe0 [ 750.509751] ? _copy_from_user+0xd2/0x130 [ 750.513882] ? nbd_disconnect_and_put+0x190/0x190 [ 750.518709] ? __lock_acquire+0x6de/0x3ff0 [ 750.522925] ? nbd_disconnect_and_put+0x190/0x190 [ 750.527770] blkdev_ioctl+0x5cb/0x1a80 [ 750.531646] ? blkpg_ioctl+0x9d0/0x9d0 [ 750.535517] ? get_pid_task+0xf4/0x190 [ 750.539388] ? mark_held_locks+0xf0/0xf0 [ 750.543434] ? proc_fail_nth_write+0x95/0x1d0 [ 750.547915] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 750.552833] ? __fdget_pos+0x26f/0x310 [ 750.556706] block_ioctl+0xe9/0x130 [ 750.560321] ? blkdev_fallocate+0x3f0/0x3f0 [ 750.564627] do_vfs_ioctl+0xcdb/0x12e0 [ 750.568502] ? lock_downgrade+0x720/0x720 [ 750.572642] ? check_preemption_disabled+0x41/0x280 [ 750.577647] ? ioctl_preallocate+0x200/0x200 [ 750.582042] ? __fget+0x356/0x510 [ 750.585478] ? do_dup2+0x450/0x450 [ 750.589008] ? vfs_write+0x393/0x540 [ 750.592716] ? fput+0x2b/0x190 [ 750.595892] ksys_ioctl+0x9b/0xc0 [ 750.599332] __x64_sys_ioctl+0x6f/0xb0 [ 750.603201] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 750.607770] do_syscall_64+0xf9/0x620 [ 750.611567] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 750.616743] RIP: 0033:0x7f03750e1089 [ 750.620445] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 750.639625] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 executing program [ 750.647323] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 750.654579] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 750.661834] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 750.669088] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 750.676425] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 750.685200] block nbd2: shutting down sockets [ 750.694423] block nbd3: Could not allocate knbd recv work queue. executing program executing program executing program executing program [ 750.701811] block nbd3: shutting down sockets [ 750.707007] block nbd4: shutting down sockets [ 750.723986] block nbd1: Device being setup by another task [ 750.730497] block nbd1: shutting down sockets [ 750.752813] block nbd0: Device being setup by another task [ 750.753933] FAULT_INJECTION: forcing a failure. [ 750.753933] name failslab, interval 1, probability 0, space 0, times 0 [ 750.758840] block nbd0: Could not allocate knbd recv work queue. [ 750.774552] CPU: 1 PID: 8769 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 750.778087] block nbd0: shutting down sockets [ 750.783813] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 750.783819] Call Trace: [ 750.783840] dump_stack+0x1fc/0x2ef [ 750.783856] should_fail.cold+0xa/0xf [ 750.783873] ? setup_fault_attr+0x200/0x200 [ 750.783887] ? lock_acquire+0x170/0x3c0 [ 750.783905] __should_failslab+0x115/0x180 [ 750.783920] should_failslab+0x5/0x10 [ 750.783939] kmem_cache_alloc_node+0x245/0x3b0 [ 750.798912] FAULT_INJECTION: forcing a failure. [ 750.798912] name failslab, interval 1, probability 0, space 0, times 0 [ 750.800342] __alloc_skb+0x71/0x560 [ 750.800363] alloc_uevent_skb+0x7b/0x210 [ 750.800379] kobject_uevent_env+0xa90/0x1480 [ 750.851796] ? nbd_size_update+0x28a/0x660 [ 750.856025] ? queue_work_on+0x11a/0x1f0 [ 750.860084] nbd_start_device+0x811/0xd60 [ 750.864236] nbd_ioctl+0x62c/0xbe0 [ 750.867953] ? _copy_from_user+0xd2/0x130 [ 750.872099] ? nbd_disconnect_and_put+0x190/0x190 [ 750.876949] ? __lock_acquire+0x6de/0x3ff0 [ 750.881177] ? nbd_disconnect_and_put+0x190/0x190 [ 750.886011] blkdev_ioctl+0x5cb/0x1a80 [ 750.889887] ? blkpg_ioctl+0x9d0/0x9d0 [ 750.893770] ? get_pid_task+0xf4/0x190 [ 750.897650] ? mark_held_locks+0xf0/0xf0 [ 750.901713] ? proc_fail_nth_write+0x95/0x1d0 [ 750.906199] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 750.911116] ? __fdget_pos+0x26f/0x310 [ 750.915006] block_ioctl+0xe9/0x130 [ 750.918623] ? blkdev_fallocate+0x3f0/0x3f0 [ 750.922937] do_vfs_ioctl+0xcdb/0x12e0 [ 750.926832] ? lock_downgrade+0x720/0x720 [ 750.930975] ? check_preemption_disabled+0x41/0x280 [ 750.935988] ? ioctl_preallocate+0x200/0x200 [ 750.940397] ? __fget+0x356/0x510 [ 750.943854] ? do_dup2+0x450/0x450 [ 750.947389] ? vfs_write+0x393/0x540 [ 750.951113] ? fput+0x2b/0x190 [ 750.954312] ksys_ioctl+0x9b/0xc0 [ 750.957766] __x64_sys_ioctl+0x6f/0xb0 [ 750.961653] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 750.966228] do_syscall_64+0xf9/0x620 [ 750.970029] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 750.975218] RIP: 0033:0x7f03750e1089 [ 750.978925] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 750.997823] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 751.005533] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 751.012795] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 751.020058] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 751.027321] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 751.034585] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 751.041865] CPU: 0 PID: 8777 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 751.043629] block nbd5: shutting down sockets [ 751.049745] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 751.049751] Call Trace: [ 751.049770] dump_stack+0x1fc/0x2ef [ 751.049788] should_fail.cold+0xa/0xf [ 751.049805] ? setup_fault_attr+0x200/0x200 [ 751.076011] block nbd4: Could not allocate knbd recv work queue. [ 751.078210] ? lock_acquire+0x170/0x3c0 [ 751.085844] block nbd4: shutting down sockets [ 751.088298] __should_failslab+0x115/0x180 [ 751.088316] should_failslab+0x5/0x10 [ 751.088330] __kmalloc+0x2ab/0x3c0 [ 751.097495] FAULT_INJECTION: forcing a failure. [ 751.097495] name failslab, interval 1, probability 0, space 0, times 0 [ 751.100805] ? kobject_get_path+0xbf/0x240 [ 751.100824] kobject_get_path+0xbf/0x240 [ 751.100846] kobject_uevent_env+0x25c/0x1480 [ 751.128202] ? nbd_size_update+0x28a/0x660 [ 751.132443] ? queue_work_on+0x11a/0x1f0 [ 751.136502] nbd_start_device+0x811/0xd60 [ 751.140651] nbd_ioctl+0x62c/0xbe0 [ 751.144186] ? _copy_from_user+0xd2/0x130 [ 751.148326] ? nbd_disconnect_and_put+0x190/0x190 [ 751.153165] ? __lock_acquire+0x6de/0x3ff0 [ 751.157396] ? nbd_disconnect_and_put+0x190/0x190 [ 751.162230] blkdev_ioctl+0x5cb/0x1a80 [ 751.166113] ? blkpg_ioctl+0x9d0/0x9d0 [ 751.169994] ? get_pid_task+0xf4/0x190 [ 751.173876] ? mark_held_locks+0xf0/0xf0 [ 751.177941] ? proc_fail_nth_write+0x95/0x1d0 [ 751.182429] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 751.187349] ? __fdget_pos+0x26f/0x310 [ 751.191232] block_ioctl+0xe9/0x130 [ 751.194845] ? blkdev_fallocate+0x3f0/0x3f0 [ 751.199157] do_vfs_ioctl+0xcdb/0x12e0 [ 751.203036] ? lock_downgrade+0x720/0x720 [ 751.207174] ? check_preemption_disabled+0x41/0x280 [ 751.212204] ? ioctl_preallocate+0x200/0x200 [ 751.216606] ? __fget+0x356/0x510 [ 751.220051] ? do_dup2+0x450/0x450 [ 751.223586] ? vfs_write+0x393/0x540 [ 751.227292] ? fput+0x2b/0x190 [ 751.230485] ksys_ioctl+0x9b/0xc0 [ 751.233934] __x64_sys_ioctl+0x6f/0xb0 [ 751.237813] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 751.242383] do_syscall_64+0xf9/0x620 [ 751.246176] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 751.251354] RIP: 0033:0x7f03750e1089 [ 751.255059] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 751.273948] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 751.281647] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 751.288905] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 751.296163] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 executing program executing program [ 751.303428] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 751.310714] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 751.317994] CPU: 1 PID: 8774 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 751.321146] block nbd3: shutting down sockets [ 751.325897] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 751.325903] Call Trace: [ 751.325926] dump_stack+0x1fc/0x2ef [ 751.325945] should_fail.cold+0xa/0xf [ 751.325960] ? setup_fault_attr+0x200/0x200 executing program executing program [ 751.325974] ? lock_acquire+0x170/0x3c0 [ 751.325993] __should_failslab+0x115/0x180 [ 751.362293] should_failslab+0x5/0x10 [ 751.363061] block nbd1: Could not allocate knbd recv work queue. [ 751.366088] kmem_cache_alloc_node+0x245/0x3b0 [ 751.366107] __alloc_skb+0x71/0x560 [ 751.374504] block nbd1: shutting down sockets [ 751.377464] alloc_uevent_skb+0x7b/0x210 [ 751.377482] kobject_uevent_env+0xa90/0x1480 [ 751.377500] ? nbd_size_update+0x28a/0x660 [ 751.398235] ? queue_work_on+0x11a/0x1f0 [ 751.402413] nbd_start_device+0x811/0xd60 [ 751.406557] nbd_ioctl+0x62c/0xbe0 [ 751.410092] ? _copy_from_user+0xd2/0x130 [ 751.414225] ? nbd_disconnect_and_put+0x190/0x190 [ 751.419069] ? __lock_acquire+0x6de/0x3ff0 [ 751.423297] ? nbd_disconnect_and_put+0x190/0x190 [ 751.428121] blkdev_ioctl+0x5cb/0x1a80 [ 751.431990] ? blkpg_ioctl+0x9d0/0x9d0 [ 751.435858] ? get_pid_task+0xf4/0x190 [ 751.439855] ? mark_held_locks+0xf0/0xf0 [ 751.443902] ? proc_fail_nth_write+0x95/0x1d0 [ 751.448386] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 751.453307] ? __fdget_pos+0x26f/0x310 [ 751.457195] block_ioctl+0xe9/0x130 [ 751.460807] ? blkdev_fallocate+0x3f0/0x3f0 [ 751.465115] do_vfs_ioctl+0xcdb/0x12e0 [ 751.469339] ? lock_downgrade+0x720/0x720 [ 751.473475] ? check_preemption_disabled+0x41/0x280 [ 751.478474] ? ioctl_preallocate+0x200/0x200 [ 751.482866] ? __fget+0x356/0x510 [ 751.486302] ? do_dup2+0x450/0x450 [ 751.489820] ? vfs_write+0x393/0x540 [ 751.493521] ? fput+0x2b/0x190 [ 751.496705] ksys_ioctl+0x9b/0xc0 [ 751.500141] __x64_sys_ioctl+0x6f/0xb0 [ 751.504013] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 751.508737] do_syscall_64+0xf9/0x620 [ 751.512537] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 751.517717] RIP: 0033:0x7f03750e1089 [ 751.522799] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 751.541688] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 751.549401] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 executing program executing program [ 751.556655] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 751.563904] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 751.571161] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 751.578412] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 751.588090] block nbd2: shutting down sockets [ 751.632724] block nbd0: Device being setup by another task [ 751.638725] block nbd1: Device being setup by another task [ 751.639379] block nbd4: Device being setup by another task [ 751.644628] block nbd0: Could not allocate knbd recv work queue. [ 751.650659] block nbd5: Device being setup by another task [ 751.664149] block nbd5: Could not allocate knbd recv work queue. [ 751.666034] block nbd0: shutting down sockets [ 751.672045] block nbd5: shutting down sockets executing program executing program [ 751.680055] FAULT_INJECTION: forcing a failure. [ 751.680055] name failslab, interval 1, probability 0, space 0, times 0 [ 751.687217] FAULT_INJECTION: forcing a failure. [ 751.687217] name failslab, interval 1, probability 0, space 0, times 0 [ 751.692738] CPU: 0 PID: 8804 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 751.710339] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 751.719686] Call Trace: [ 751.722266] dump_stack+0x1fc/0x2ef [ 751.725890] should_fail.cold+0xa/0xf [ 751.729684] ? setup_fault_attr+0x200/0x200 [ 751.733992] ? lock_acquire+0x170/0x3c0 [ 751.737963] __should_failslab+0x115/0x180 [ 751.742192] should_failslab+0x5/0x10 [ 751.745987] kmem_cache_alloc_node_trace+0x244/0x3b0 [ 751.751082] __kmalloc_node_track_caller+0x38/0x70 [ 751.756001] __alloc_skb+0xae/0x560 [ 751.759624] alloc_uevent_skb+0x7b/0x210 [ 751.763679] kobject_uevent_env+0xa90/0x1480 [ 751.768080] ? nbd_size_update+0x28a/0x660 [ 751.772307] ? queue_work_on+0x11a/0x1f0 [ 751.776361] nbd_start_device+0x811/0xd60 [ 751.780503] nbd_ioctl+0x62c/0xbe0 [ 751.784036] ? _copy_from_user+0xd2/0x130 [ 751.788175] ? nbd_disconnect_and_put+0x190/0x190 [ 751.793048] ? __lock_acquire+0x6de/0x3ff0 [ 751.797284] ? nbd_disconnect_and_put+0x190/0x190 [ 751.802122] blkdev_ioctl+0x5cb/0x1a80 [ 751.806004] ? blkpg_ioctl+0x9d0/0x9d0 [ 751.809887] ? get_pid_task+0xf4/0x190 [ 751.813767] ? mark_held_locks+0xf0/0xf0 [ 751.817815] ? proc_fail_nth_write+0x95/0x1d0 [ 751.822300] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 751.827215] ? __fdget_pos+0x26f/0x310 [ 751.831100] block_ioctl+0xe9/0x130 [ 751.834720] ? blkdev_fallocate+0x3f0/0x3f0 [ 751.839029] do_vfs_ioctl+0xcdb/0x12e0 [ 751.842911] ? lock_downgrade+0x720/0x720 [ 751.847046] ? check_preemption_disabled+0x41/0x280 [ 751.852053] ? ioctl_preallocate+0x200/0x200 [ 751.856456] ? __fget+0x356/0x510 [ 751.859902] ? do_dup2+0x450/0x450 [ 751.863438] ? vfs_write+0x393/0x540 [ 751.867143] ? fput+0x2b/0x190 [ 751.870851] ksys_ioctl+0x9b/0xc0 [ 751.874292] __x64_sys_ioctl+0x6f/0xb0 [ 751.878172] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 751.882749] do_syscall_64+0xf9/0x620 [ 751.886545] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 751.891721] RIP: 0033:0x7f03750e1089 [ 751.895426] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 751.914313] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 751.922011] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 751.929267] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 751.936522] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 751.943778] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 751.951032] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 751.958307] CPU: 1 PID: 8809 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 751.960579] FAULT_INJECTION: forcing a failure. [ 751.960579] name failslab, interval 1, probability 0, space 0, times 0 [ 751.966185] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 751.966190] Call Trace: [ 751.966209] dump_stack+0x1fc/0x2ef [ 751.966227] should_fail.cold+0xa/0xf [ 751.966244] ? setup_fault_attr+0x200/0x200 [ 751.966257] ? lock_acquire+0x170/0x3c0 [ 751.966275] __should_failslab+0x115/0x180 [ 751.966291] should_failslab+0x5/0x10 [ 751.966302] __kmalloc+0x2ab/0x3c0 [ 751.966316] ? kobject_get_path+0xbf/0x240 [ 751.966333] kobject_get_path+0xbf/0x240 [ 751.966351] kobject_uevent_env+0x25c/0x1480 [ 751.966369] ? nbd_size_update+0x28a/0x660 [ 751.966383] ? queue_work_on+0x11a/0x1f0 [ 751.966400] nbd_start_device+0x811/0xd60 [ 751.966423] nbd_ioctl+0x62c/0xbe0 [ 751.991644] block nbd1: shutting down sockets [ 751.993097] ? _copy_from_user+0xd2/0x130 [ 751.993114] ? nbd_disconnect_and_put+0x190/0x190 [ 751.993134] ? __lock_acquire+0x6de/0x3ff0 [ 751.993148] ? nbd_disconnect_and_put+0x190/0x190 [ 751.993163] blkdev_ioctl+0x5cb/0x1a80 [ 751.993176] ? blkpg_ioctl+0x9d0/0x9d0 [ 751.993190] ? get_pid_task+0xf4/0x190 [ 751.993202] ? mark_held_locks+0xf0/0xf0 [ 751.993217] ? proc_fail_nth_write+0x95/0x1d0 [ 752.088104] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 752.093031] ? __fdget_pos+0x26f/0x310 [ 752.096918] block_ioctl+0xe9/0x130 [ 752.100534] ? blkdev_fallocate+0x3f0/0x3f0 [ 752.104845] do_vfs_ioctl+0xcdb/0x12e0 [ 752.108725] ? lock_downgrade+0x720/0x720 [ 752.112863] ? check_preemption_disabled+0x41/0x280 [ 752.117869] ? ioctl_preallocate+0x200/0x200 [ 752.122273] ? __fget+0x356/0x510 [ 752.125719] ? do_dup2+0x450/0x450 [ 752.129247] ? vfs_write+0x393/0x540 [ 752.132962] ? fput+0x2b/0x190 [ 752.136166] ksys_ioctl+0x9b/0xc0 [ 752.139729] __x64_sys_ioctl+0x6f/0xb0 [ 752.143609] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 752.148180] do_syscall_64+0xf9/0x620 [ 752.151975] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 752.157153] RIP: 0033:0x7f03750e1089 [ 752.160857] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 executing program [ 752.179749] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 752.187454] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 752.194715] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 752.201981] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 752.209261] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 752.216526] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 752.228153] FAULT_INJECTION: forcing a failure. [ 752.228153] name failslab, interval 1, probability 0, space 0, times 0 [ 752.239545] CPU: 1 PID: 8808 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 752.247428] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 752.256776] Call Trace: [ 752.259367] dump_stack+0x1fc/0x2ef [ 752.263001] should_fail.cold+0xa/0xf [ 752.266814] ? setup_fault_attr+0x200/0x200 [ 752.269520] block nbd2: shutting down sockets [ 752.271131] ? lock_acquire+0x170/0x3c0 [ 752.271155] __should_failslab+0x115/0x180 [ 752.283808] should_failslab+0x5/0x10 [ 752.287880] kmem_cache_alloc_node+0x245/0x3b0 [ 752.292458] __alloc_skb+0x71/0x560 [ 752.296080] alloc_uevent_skb+0x7b/0x210 [ 752.300133] kobject_uevent_env+0xa90/0x1480 [ 752.304534] ? nbd_size_update+0x28a/0x660 [ 752.309017] ? queue_work_on+0x11a/0x1f0 [ 752.313076] nbd_start_device+0x811/0xd60 [ 752.317221] nbd_ioctl+0x62c/0xbe0 [ 752.320751] ? _copy_from_user+0xd2/0x130 [ 752.324886] ? nbd_disconnect_and_put+0x190/0x190 [ 752.329730] ? __lock_acquire+0x6de/0x3ff0 [ 752.333963] ? nbd_disconnect_and_put+0x190/0x190 [ 752.338795] blkdev_ioctl+0x5cb/0x1a80 [ 752.342673] ? blkpg_ioctl+0x9d0/0x9d0 [ 752.346553] ? get_pid_task+0xf4/0x190 [ 752.350435] ? mark_held_locks+0xf0/0xf0 [ 752.354484] ? proc_fail_nth_write+0x95/0x1d0 [ 752.358991] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 752.363911] ? __fdget_pos+0x26f/0x310 [ 752.367793] block_ioctl+0xe9/0x130 [ 752.371405] ? blkdev_fallocate+0x3f0/0x3f0 [ 752.375715] do_vfs_ioctl+0xcdb/0x12e0 [ 752.379593] ? lock_downgrade+0x720/0x720 [ 752.383730] ? check_preemption_disabled+0x41/0x280 [ 752.388734] ? ioctl_preallocate+0x200/0x200 [ 752.393137] ? __fget+0x356/0x510 [ 752.396593] ? do_dup2+0x450/0x450 [ 752.400126] ? vfs_write+0x393/0x540 [ 752.403835] ? fput+0x2b/0x190 [ 752.407024] ksys_ioctl+0x9b/0xc0 [ 752.410478] __x64_sys_ioctl+0x6f/0xb0 [ 752.414358] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 752.418934] do_syscall_64+0xf9/0x620 [ 752.422726] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 752.427905] RIP: 0033:0x7f03750e1089 [ 752.431611] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 752.450501] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 752.458198] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 752.465544] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 752.472798] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 752.480055] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 752.487313] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 752.494589] CPU: 0 PID: 8793 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 752.495652] block nbd3: shutting down sockets [ 752.502467] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 752.502472] Call Trace: [ 752.502492] dump_stack+0x1fc/0x2ef [ 752.502511] should_fail.cold+0xa/0xf [ 752.502527] ? setup_fault_attr+0x200/0x200 [ 752.502541] ? lock_acquire+0x170/0x3c0 executing program executing program executing program [ 752.502558] __should_failslab+0x115/0x180 [ 752.533697] block nbd0: Device being setup by another task [ 752.534589] should_failslab+0x5/0x10 [ 752.538974] block nbd0: Could not allocate knbd recv work queue. [ 752.544402] __kmalloc_track_caller+0x2a6/0x3c0 [ 752.544416] ? kvasprintf_const+0x60/0x190 [ 752.544432] kvasprintf+0xb5/0x150 [ 752.544444] ? bust_spinlocks+0xe0/0xe0 [ 752.544460] ? mark_held_locks+0xa6/0xf0 [ 752.551276] block nbd0: shutting down sockets [ 752.554371] kvasprintf_const+0x60/0x190 [ 752.554391] kobject_set_name_vargs+0x56/0x150 [ 752.554407] kobject_add+0x10d/0x1c0 [ 752.554421] ? kset_create_and_add+0x1a0/0x1a0 [ 752.554433] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 752.554449] ? lock_downgrade+0x720/0x720 [ 752.604952] ? kernfs_put.part.0+0x225/0x590 [ 752.609346] blk_mq_register_hctx+0x23c/0x2c0 [ 752.613826] blk_mq_sysfs_register+0x143/0x1c0 [ 752.618386] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 752.623392] ? workqueue_sysfs_register+0x391/0x3e0 [ 752.628407] ? blk_mq_init_queue+0xa0/0xa0 [ 752.632634] nbd_start_device+0x1f2/0xd60 [ 752.636767] ? security_capable+0x8f/0xc0 [ 752.640912] nbd_ioctl+0x62c/0xbe0 [ 752.644446] ? _copy_from_user+0xd2/0x130 [ 752.648576] ? nbd_disconnect_and_put+0x190/0x190 [ 752.653408] ? __lock_acquire+0x6de/0x3ff0 [ 752.657641] ? nbd_disconnect_and_put+0x190/0x190 [ 752.662472] blkdev_ioctl+0x5cb/0x1a80 [ 752.666345] ? blkpg_ioctl+0x9d0/0x9d0 [ 752.670213] ? get_pid_task+0xf4/0x190 [ 752.674080] ? mark_held_locks+0xf0/0xf0 [ 752.678131] ? proc_fail_nth_write+0x95/0x1d0 [ 752.682628] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 752.687539] ? __fdget_pos+0x26f/0x310 [ 752.691411] block_ioctl+0xe9/0x130 [ 752.695016] ? blkdev_fallocate+0x3f0/0x3f0 [ 752.699317] do_vfs_ioctl+0xcdb/0x12e0 [ 752.703185] ? lock_downgrade+0x720/0x720 [ 752.707319] ? check_preemption_disabled+0x41/0x280 [ 752.712315] ? ioctl_preallocate+0x200/0x200 [ 752.716705] ? __fget+0x356/0x510 [ 752.720140] ? do_dup2+0x450/0x450 [ 752.723656] ? vfs_write+0x393/0x540 [ 752.727357] ? fput+0x2b/0x190 [ 752.730531] ksys_ioctl+0x9b/0xc0 [ 752.733969] __x64_sys_ioctl+0x6f/0xb0 [ 752.737837] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 752.742409] do_syscall_64+0xf9/0x620 [ 752.746205] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 752.751374] RIP: 0033:0x7f03750e1089 [ 752.755068] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 752.773947] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 752.781635] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 752.788883] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 752.796130] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 752.803384] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 752.810631] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 752.818893] kobject: can not set name properly! [ 752.831743] block nbd4: shutting down sockets executing program executing program [ 752.836507] block nbd5: Device being setup by another task [ 752.843641] block nbd5: Could not allocate knbd recv work queue. [ 752.852838] block nbd5: shutting down sockets [ 752.852990] block nbd2: Device being setup by another task [ 752.863089] block nbd3: Device being setup by another task [ 752.867111] block nbd0: Device being setup by another task [ 752.870476] block nbd3: Could not allocate knbd recv work queue. [ 752.882208] block nbd0: Could not allocate knbd recv work queue. [ 752.882588] block nbd1: Device being setup by another task [ 752.889054] block nbd2: Could not allocate knbd recv work queue. [ 752.902480] FAULT_INJECTION: forcing a failure. [ 752.902480] name failslab, interval 1, probability 0, space 0, times 0 [ 752.903832] block nbd3: shutting down sockets [ 752.920780] block nbd2: shutting down sockets [ 752.924302] CPU: 0 PID: 8830 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 752.926117] block nbd0: shutting down sockets executing program executing program executing program [ 752.933149] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 752.933154] Call Trace: [ 752.933174] dump_stack+0x1fc/0x2ef [ 752.933193] should_fail.cold+0xa/0xf [ 752.933210] ? setup_fault_attr+0x200/0x200 [ 752.933223] ? lock_acquire+0x170/0x3c0 [ 752.933243] __should_failslab+0x115/0x180 [ 752.933258] should_failslab+0x5/0x10 [ 752.933273] kmem_cache_alloc+0x277/0x370 [ 752.977399] alloc_inode+0xab/0x180 [ 752.981006] new_inode+0x1d/0xf0 [ 752.984355] debugfs_get_inode+0x1a/0x130 [ 752.988483] __debugfs_create_file+0xb2/0x480 [ 752.992962] nbd_start_device+0x50d/0xd60 [ 752.997108] ? security_capable+0x8f/0xc0 [ 753.001248] nbd_ioctl+0x62c/0xbe0 [ 753.004771] ? _copy_from_user+0xd2/0x130 [ 753.008900] ? nbd_disconnect_and_put+0x190/0x190 [ 753.013726] ? __lock_acquire+0x6de/0x3ff0 [ 753.017945] ? nbd_disconnect_and_put+0x190/0x190 [ 753.022766] blkdev_ioctl+0x5cb/0x1a80 [ 753.026633] ? blkpg_ioctl+0x9d0/0x9d0 [ 753.030503] ? get_pid_task+0xf4/0x190 [ 753.034375] ? mark_held_locks+0xf0/0xf0 [ 753.038414] ? proc_fail_nth_write+0x95/0x1d0 [ 753.042892] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 753.047815] ? __fdget_pos+0x26f/0x310 [ 753.051703] block_ioctl+0xe9/0x130 [ 753.055323] ? blkdev_fallocate+0x3f0/0x3f0 [ 753.059648] do_vfs_ioctl+0xcdb/0x12e0 [ 753.063542] ? lock_downgrade+0x720/0x720 [ 753.067687] ? check_preemption_disabled+0x41/0x280 [ 753.072692] ? ioctl_preallocate+0x200/0x200 [ 753.077092] ? __fget+0x356/0x510 [ 753.080533] ? do_dup2+0x450/0x450 [ 753.084055] ? vfs_write+0x393/0x540 [ 753.087759] ? fput+0x2b/0x190 [ 753.090949] ksys_ioctl+0x9b/0xc0 [ 753.094406] __x64_sys_ioctl+0x6f/0xb0 [ 753.098291] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 753.102863] do_syscall_64+0xf9/0x620 [ 753.106657] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 753.111831] RIP: 0033:0x7f03750e1089 [ 753.115538] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 753.134434] RSP: 002b:00007f03750232e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 753.142130] RAX: ffffffffffffffda RBX: 00007f037515e4f0 RCX: 00007f03750e1089 [ 753.149400] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000006 [ 753.156663] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 753.163912] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4fc [ 753.171164] R13: 00007f03750232f0 R14: 00007f037515e4f8 R15: 0000000000000002 executing program [ 753.202937] block nbd1: shutting down sockets [ 753.222654] block nbd5: Device being setup by another task [ 753.232653] block nbd0: Device being setup by another task [ 753.236517] block nbd3: Device being setup by another task [ 753.238477] block nbd2: Device being setup by another task [ 753.244417] block nbd3: Could not allocate knbd recv work queue. [ 753.250406] block nbd0: Could not allocate knbd recv work queue. [ 753.264632] block nbd2: Could not allocate knbd recv work queue. [ 753.265067] FAULT_INJECTION: forcing a failure. [ 753.265067] name failslab, interval 1, probability 0, space 0, times 0 [ 753.272680] FAULT_INJECTION: forcing a failure. [ 753.272680] name failslab, interval 1, probability 0, space 0, times 0 [ 753.284993] block nbd3: shutting down sockets [ 753.294150] block nbd2: shutting down sockets [ 753.298873] block nbd0: shutting down sockets [ 753.302902] CPU: 1 PID: 8849 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 753.314775] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 753.324124] Call Trace: [ 753.326711] dump_stack+0x1fc/0x2ef [ 753.330336] should_fail.cold+0xa/0xf [ 753.334131] ? setup_fault_attr+0x200/0x200 [ 753.338448] ? lock_acquire+0x170/0x3c0 [ 753.342414] __should_failslab+0x115/0x180 [ 753.346644] should_failslab+0x5/0x10 [ 753.350436] kmem_cache_alloc+0x277/0x370 [ 753.354580] alloc_inode+0xab/0x180 [ 753.358193] new_inode+0x1d/0xf0 [ 753.361546] debugfs_get_inode+0x1a/0x130 [ 753.365685] __debugfs_create_file+0xb2/0x480 [ 753.370187] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 753.375376] ? kvm_clock_get_cycles+0x14/0x30 [ 753.379867] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 753.384708] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 753.389624] ? init_srcu_struct_fields+0xca6/0x1190 [ 753.394632] ? srcu_reschedule+0x120/0x120 [ 753.398858] ? __raw_spin_lock_init+0x28/0x100 executing program executing program [ 753.403434] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 753.408184] ? nbd_clear_que+0x160/0x160 [ 753.412249] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 753.417261] ? workqueue_sysfs_register+0x391/0x3e0 [ 753.422288] ? blk_mq_init_queue+0xa0/0xa0 [ 753.426519] ? apparmor_sb_mount+0x970/0x970 [ 753.430926] nbd_start_device+0x1f2/0xd60 [ 753.435071] ? security_capable+0x8f/0xc0 [ 753.439224] nbd_ioctl+0x62c/0xbe0 [ 753.442766] ? _copy_from_user+0xd2/0x130 [ 753.446913] ? nbd_disconnect_and_put+0x190/0x190 [ 753.451754] ? __lock_acquire+0x6de/0x3ff0 [ 753.455993] ? nbd_disconnect_and_put+0x190/0x190 [ 753.460824] blkdev_ioctl+0x5cb/0x1a80 [ 753.464700] ? blkpg_ioctl+0x9d0/0x9d0 [ 753.468577] ? get_pid_task+0xf4/0x190 [ 753.472463] ? mark_held_locks+0xf0/0xf0 [ 753.476517] ? proc_fail_nth_write+0x95/0x1d0 [ 753.481008] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 753.485932] ? __fdget_pos+0x26f/0x310 [ 753.489817] block_ioctl+0xe9/0x130 [ 753.493431] ? blkdev_fallocate+0x3f0/0x3f0 [ 753.497743] do_vfs_ioctl+0xcdb/0x12e0 [ 753.501625] ? lock_downgrade+0x720/0x720 [ 753.505768] ? check_preemption_disabled+0x41/0x280 [ 753.510783] ? ioctl_preallocate+0x200/0x200 [ 753.515207] ? __fget+0x356/0x510 [ 753.518654] ? do_dup2+0x450/0x450 [ 753.522180] ? vfs_write+0x393/0x540 [ 753.525894] ? fput+0x2b/0x190 [ 753.529084] ksys_ioctl+0x9b/0xc0 [ 753.532527] __x64_sys_ioctl+0x6f/0xb0 [ 753.536407] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 753.540975] do_syscall_64+0xf9/0x620 [ 753.544774] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 753.549949] RIP: 0033:0x7f03750e1089 [ 753.553649] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 753.572537] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 753.580231] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 753.587487] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 753.594744] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 753.602004] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 753.609273] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 753.616550] CPU: 0 PID: 8851 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 753.624435] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 753.633781] Call Trace: [ 753.636372] dump_stack+0x1fc/0x2ef [ 753.640007] should_fail.cold+0xa/0xf [ 753.643814] ? setup_fault_attr+0x200/0x200 [ 753.648136] ? lock_acquire+0x170/0x3c0 executing program [ 753.652114] __should_failslab+0x115/0x180 [ 753.656355] should_failslab+0x5/0x10 [ 753.660137] __kmalloc_track_caller+0x2a6/0x3c0 [ 753.664787] ? kvasprintf_const+0x60/0x190 [ 753.669004] kvasprintf+0xb5/0x150 [ 753.672524] ? bust_spinlocks+0xe0/0xe0 [ 753.676481] ? mark_held_locks+0xa6/0xf0 [ 753.680541] kvasprintf_const+0x60/0x190 [ 753.684612] kobject_set_name_vargs+0x56/0x150 [ 753.689178] kobject_add+0x10d/0x1c0 [ 753.692873] ? kset_create_and_add+0x1a0/0x1a0 [ 753.697435] ? blk_mq_sysfs_register+0x2b/0x1c0 executing program [ 753.702102] ? lock_downgrade+0x720/0x720 [ 753.706257] ? kernfs_put.part.0+0x225/0x590 [ 753.710673] blk_mq_register_hctx+0x23c/0x2c0 [ 753.715164] blk_mq_sysfs_register+0x143/0x1c0 [ 753.719728] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 753.724727] ? workqueue_sysfs_register+0x391/0x3e0 [ 753.728001] block nbd4: shutting down sockets [ 753.729736] ? blk_mq_init_queue+0xa0/0xa0 [ 753.729751] ? apparmor_sb_mount+0x970/0x970 [ 753.729770] nbd_start_device+0x1f2/0xd60 [ 753.746994] ? security_capable+0x8f/0xc0 [ 753.751153] nbd_ioctl+0x62c/0xbe0 [ 753.754687] ? _copy_from_user+0xd2/0x130 [ 753.758820] ? nbd_disconnect_and_put+0x190/0x190 [ 753.763648] ? __lock_acquire+0x6de/0x3ff0 [ 753.767870] ? nbd_disconnect_and_put+0x190/0x190 [ 753.772700] blkdev_ioctl+0x5cb/0x1a80 [ 753.776569] ? blkpg_ioctl+0x9d0/0x9d0 [ 753.780435] ? get_pid_task+0xf4/0x190 [ 753.784301] ? mark_held_locks+0xf0/0xf0 [ 753.788349] ? proc_fail_nth_write+0x95/0x1d0 [ 753.792826] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 753.797736] ? __fdget_pos+0x26f/0x310 [ 753.801610] block_ioctl+0xe9/0x130 [ 753.805217] ? blkdev_fallocate+0x3f0/0x3f0 [ 753.809521] do_vfs_ioctl+0xcdb/0x12e0 [ 753.813409] ? lock_downgrade+0x720/0x720 [ 753.817542] ? check_preemption_disabled+0x41/0x280 [ 753.822538] ? ioctl_preallocate+0x200/0x200 [ 753.826927] ? __fget+0x356/0x510 [ 753.830359] ? do_dup2+0x450/0x450 [ 753.833877] ? vfs_write+0x393/0x540 [ 753.837571] ? fput+0x2b/0x190 [ 753.840748] ksys_ioctl+0x9b/0xc0 [ 753.844186] __x64_sys_ioctl+0x6f/0xb0 [ 753.848056] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 753.852618] do_syscall_64+0xf9/0x620 [ 753.856402] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 753.861572] RIP: 0033:0x7f03750e1089 [ 753.865271] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 753.884173] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 753.891878] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 executing program executing program [ 753.899136] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 753.906384] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 753.913631] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 753.920879] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 753.929295] block nbd1: Could not allocate knbd recv work queue. [ 753.936560] kobject: can not set name properly! [ 753.937022] block nbd1: shutting down sockets [ 753.950030] block nbd5: shutting down sockets executing program [ 753.962540] block nbd2: Device being setup by another task [ 753.968692] block nbd2: Could not allocate knbd recv work queue. [ 753.975571] block nbd4: Device being setup by another task [ 753.977852] block nbd2: shutting down sockets [ 753.985886] block nbd0: Device being setup by another task [ 753.991554] block nbd3: Device being setup by another task [ 753.997391] block nbd0: Could not allocate knbd recv work queue. [ 754.001009] block nbd3: Could not allocate knbd recv work queue. executing program executing program [ 754.006154] block nbd0: shutting down sockets [ 754.015616] block nbd3: shutting down sockets [ 754.034181] FAULT_INJECTION: forcing a failure. [ 754.034181] name failslab, interval 1, probability 0, space 0, times 0 [ 754.046573] CPU: 0 PID: 8899 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 754.052562] block nbd1: Device being setup by another task [ 754.054452] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 754.054458] Call Trace: [ 754.054477] dump_stack+0x1fc/0x2ef [ 754.054495] should_fail.cold+0xa/0xf [ 754.054512] ? setup_fault_attr+0x200/0x200 [ 754.054526] ? lock_acquire+0x170/0x3c0 [ 754.054543] __should_failslab+0x115/0x180 [ 754.069042] FAULT_INJECTION: forcing a failure. [ 754.069042] name failslab, interval 1, probability 0, space 0, times 0 [ 754.069492] should_failslab+0x5/0x10 [ 754.106822] __kmalloc_track_caller+0x2a6/0x3c0 [ 754.111479] ? kstrdup_const+0x53/0x80 [ 754.115357] kstrdup+0x36/0x70 [ 754.118537] kstrdup_const+0x53/0x80 [ 754.122252] __kernfs_new_node+0x9b/0x680 [ 754.126398] ? kfree+0xcc/0x210 [ 754.129685] ? kobject_add+0x10d/0x1c0 [ 754.133567] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 754.138317] ? nbd_start_device+0x1f2/0xd60 [ 754.142636] ? nbd_ioctl+0x62c/0xbe0 [ 754.146345] ? blkdev_ioctl+0x5cb/0x1a80 [ 754.150399] ? do_vfs_ioctl+0xcdb/0x12e0 [ 754.154446] ? __x64_sys_ioctl+0x6f/0xb0 [ 754.158675] ? do_syscall_64+0xf9/0x620 [ 754.162649] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 754.168015] ? debug_check_no_obj_freed+0x201/0x490 [ 754.173029] kernfs_create_dir_ns+0x9e/0x230 [ 754.177433] sysfs_create_dir_ns+0x127/0x280 [ 754.181831] ? sysfs_create_mount_point+0xb0/0xb0 [ 754.186665] ? mark_held_locks+0xa6/0xf0 [ 754.190716] ? kfree+0x110/0x210 [ 754.194075] ? kfree_const+0x51/0x60 [ 754.197781] kobject_add_internal+0x2a5/0x9c0 [ 754.202274] kobject_add+0x150/0x1c0 [ 754.205977] ? kset_create_and_add+0x1a0/0x1a0 [ 754.210550] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 754.215211] ? lock_downgrade+0x720/0x720 [ 754.219351] ? kernfs_put.part.0+0x225/0x590 [ 754.223752] blk_mq_register_hctx+0x23c/0x2c0 [ 754.228245] blk_mq_sysfs_register+0x143/0x1c0 [ 754.232829] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 754.237840] ? workqueue_sysfs_register+0x391/0x3e0 [ 754.242854] ? blk_mq_init_queue+0xa0/0xa0 [ 754.247091] nbd_start_device+0x1f2/0xd60 [ 754.251249] ? security_capable+0x8f/0xc0 [ 754.255400] nbd_ioctl+0x62c/0xbe0 [ 754.258936] ? _copy_from_user+0xd2/0x130 [ 754.263078] ? nbd_disconnect_and_put+0x190/0x190 [ 754.267921] ? __lock_acquire+0x6de/0x3ff0 [ 754.272154] ? nbd_disconnect_and_put+0x190/0x190 [ 754.276988] blkdev_ioctl+0x5cb/0x1a80 [ 754.280872] ? blkpg_ioctl+0x9d0/0x9d0 [ 754.284753] ? get_pid_task+0xf4/0x190 [ 754.288634] ? mark_held_locks+0xf0/0xf0 [ 754.292687] ? proc_fail_nth_write+0x95/0x1d0 [ 754.297175] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 754.302091] ? __fdget_pos+0x26f/0x310 [ 754.305972] block_ioctl+0xe9/0x130 [ 754.309587] ? blkdev_fallocate+0x3f0/0x3f0 [ 754.313907] do_vfs_ioctl+0xcdb/0x12e0 [ 754.317793] ? lock_downgrade+0x720/0x720 [ 754.321935] ? check_preemption_disabled+0x41/0x280 [ 754.326953] ? ioctl_preallocate+0x200/0x200 [ 754.331363] ? __fget+0x356/0x510 [ 754.334811] ? do_dup2+0x450/0x450 [ 754.338346] ? vfs_write+0x393/0x540 [ 754.342054] ? fput+0x2b/0x190 [ 754.345245] ksys_ioctl+0x9b/0xc0 [ 754.348689] __x64_sys_ioctl+0x6f/0xb0 [ 754.352664] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 754.357258] do_syscall_64+0xf9/0x620 [ 754.361062] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 754.366268] RIP: 0033:0x7f03750e1089 [ 754.369972] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 754.388863] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 754.396563] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 754.403818] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 754.411075] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 754.418339] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 754.425598] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 754.432873] CPU: 1 PID: 8905 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 754.437885] kobject_add_internal failed for cpu1 (error: -12 parent: 0) [ 754.440757] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 754.440762] Call Trace: [ 754.440779] dump_stack+0x1fc/0x2ef [ 754.440796] should_fail.cold+0xa/0xf [ 754.453280] block nbd4: shutting down sockets [ 754.456878] ? setup_fault_attr+0x200/0x200 [ 754.456895] ? lock_acquire+0x170/0x3c0 [ 754.479589] __should_failslab+0x115/0x180 [ 754.483827] should_failslab+0x5/0x10 [ 754.487626] kmem_cache_alloc+0x277/0x370 [ 754.491779] __d_alloc+0x2b/0xa10 [ 754.495241] d_alloc+0x4a/0x230 [ 754.498528] d_alloc_parallel+0xeb/0x19e0 [ 754.502684] ? mark_held_locks+0xf0/0xf0 [ 754.506751] ? __d_lookup_rcu+0x6b0/0x6b0 [ 754.510903] ? __lock_acquire+0x6de/0x3ff0 [ 754.515145] ? mark_held_locks+0xf0/0xf0 [ 754.519215] ? __lockdep_init_map+0x100/0x5a0 [ 754.523703] ? __lockdep_init_map+0x100/0x5a0 [ 754.528190] __lookup_slow+0x18d/0x4a0 [ 754.532057] ? check_preemption_disabled+0x41/0x280 [ 754.537053] ? follow_dotdot_rcu+0x1040/0x1040 [ 754.541617] ? __d_lookup+0x411/0x710 [ 754.545401] ? d_lookup+0x18e/0x250 [ 754.549012] lookup_one_len+0x163/0x190 [ 754.552968] ? try_lookup_one_len+0x180/0x180 [ 754.557447] start_creating+0xc9/0x220 [ 754.561319] __debugfs_create_file+0x5e/0x480 [ 754.565798] nbd_start_device+0x50d/0xd60 [ 754.569924] ? security_capable+0x8f/0xc0 [ 754.574055] nbd_ioctl+0x62c/0xbe0 [ 754.577575] ? _copy_from_user+0xd2/0x130 [ 754.581707] ? nbd_disconnect_and_put+0x190/0x190 [ 754.586531] ? __lock_acquire+0x6de/0x3ff0 [ 754.590745] ? nbd_disconnect_and_put+0x190/0x190 [ 754.595576] blkdev_ioctl+0x5cb/0x1a80 [ 754.599446] ? blkpg_ioctl+0x9d0/0x9d0 [ 754.603317] ? get_pid_task+0xf4/0x190 [ 754.607187] ? mark_held_locks+0xf0/0xf0 [ 754.611227] ? proc_fail_nth_write+0x95/0x1d0 [ 754.615699] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 754.620607] ? __fdget_pos+0x26f/0x310 [ 754.624479] block_ioctl+0xe9/0x130 [ 754.628081] ? blkdev_fallocate+0x3f0/0x3f0 [ 754.632389] do_vfs_ioctl+0xcdb/0x12e0 [ 754.636351] ? lock_downgrade+0x720/0x720 [ 754.640477] ? check_preemption_disabled+0x41/0x280 [ 754.645471] ? ioctl_preallocate+0x200/0x200 [ 754.649861] ? __fget+0x356/0x510 [ 754.653294] ? do_dup2+0x450/0x450 [ 754.656811] ? vfs_write+0x393/0x540 [ 754.660505] ? fput+0x2b/0x190 [ 754.663680] ksys_ioctl+0x9b/0xc0 [ 754.667123] __x64_sys_ioctl+0x6f/0xb0 [ 754.670994] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 754.675554] do_syscall_64+0xf9/0x620 [ 754.679338] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 754.684507] RIP: 0033:0x7f03750e1089 [ 754.688206] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 754.707084] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 754.714779] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 754.722037] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 754.729283] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 754.736530] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 754.743779] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 754.753706] block nbd2: shutting down sockets [ 754.759168] block nbd1: shutting down sockets executing program executing program executing program [ 754.762987] block nbd0: Could not allocate knbd recv work queue. [ 754.763925] block nbd3: Could not allocate knbd recv work queue. [ 754.771072] block nbd0: shutting down sockets [ 754.781914] block nbd3: shutting down sockets [ 754.789266] FAULT_INJECTION: forcing a failure. [ 754.789266] name failslab, interval 1, probability 0, space 0, times 0 [ 754.803831] CPU: 1 PID: 8906 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 754.811721] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 754.821069] Call Trace: [ 754.823642] dump_stack+0x1fc/0x2ef [ 754.827254] should_fail.cold+0xa/0xf [ 754.831153] ? setup_fault_attr+0x200/0x200 [ 754.835459] ? lock_acquire+0x170/0x3c0 [ 754.839425] __should_failslab+0x115/0x180 [ 754.843648] should_failslab+0x5/0x10 [ 754.847430] kmem_cache_alloc+0x277/0x370 [ 754.851565] __d_alloc+0x2b/0xa10 [ 754.855012] ? __bpf_address_lookup+0x330/0x330 [ 754.859692] ? check_preemption_disabled+0x41/0x280 [ 754.864692] d_alloc+0x4a/0x230 [ 754.867959] d_alloc_parallel+0xeb/0x19e0 [ 754.872117] ? mark_held_locks+0xf0/0xf0 [ 754.876163] ? __d_lookup_rcu+0x6b0/0x6b0 [ 754.880294] ? mark_held_locks+0xf0/0xf0 [ 754.884337] ? __lockdep_init_map+0x100/0x5a0 [ 754.888813] ? __lockdep_init_map+0x100/0x5a0 [ 754.893291] __lookup_slow+0x18d/0x4a0 [ 754.897307] ? check_preemption_disabled+0x41/0x280 [ 754.902309] ? follow_dotdot_rcu+0x1040/0x1040 [ 754.906874] ? __d_lookup+0x411/0x710 [ 754.910662] ? d_lookup+0x18e/0x250 [ 754.914271] lookup_one_len+0x163/0x190 [ 754.918228] ? try_lookup_one_len+0x180/0x180 [ 754.922709] start_creating+0xc9/0x220 [ 754.926581] __debugfs_create_file+0x5e/0x480 [ 754.931060] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 754.936233] ? kvm_clock_get_cycles+0x14/0x30 [ 754.940710] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 754.945536] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 754.950448] ? init_srcu_struct_fields+0xca6/0x1190 [ 754.955451] ? srcu_reschedule+0x120/0x120 [ 754.959668] ? __raw_spin_lock_init+0x28/0x100 [ 754.964233] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 754.968972] ? nbd_clear_que+0x160/0x160 [ 754.973018] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 754.978021] ? workqueue_sysfs_register+0x391/0x3e0 [ 754.983037] ? blk_mq_init_queue+0xa0/0xa0 [ 754.987254] ? apparmor_sb_mount+0x970/0x970 [ 754.991646] nbd_start_device+0x1f2/0xd60 [ 754.995773] ? security_capable+0x8f/0xc0 [ 754.999903] nbd_ioctl+0x62c/0xbe0 [ 755.003425] ? _copy_from_user+0xd2/0x130 [ 755.007551] ? nbd_disconnect_and_put+0x190/0x190 [ 755.012389] ? __lock_acquire+0x6de/0x3ff0 [ 755.016617] ? nbd_disconnect_and_put+0x190/0x190 [ 755.021440] blkdev_ioctl+0x5cb/0x1a80 [ 755.025308] ? blkpg_ioctl+0x9d0/0x9d0 [ 755.029184] ? get_pid_task+0xf4/0x190 [ 755.033057] ? mark_held_locks+0xf0/0xf0 [ 755.037096] ? proc_fail_nth_write+0x95/0x1d0 [ 755.041571] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 755.046483] ? __fdget_pos+0x26f/0x310 [ 755.050354] block_ioctl+0xe9/0x130 [ 755.053959] ? blkdev_fallocate+0x3f0/0x3f0 [ 755.058261] do_vfs_ioctl+0xcdb/0x12e0 [ 755.062136] ? lock_downgrade+0x720/0x720 [ 755.066263] ? check_preemption_disabled+0x41/0x280 [ 755.071260] ? ioctl_preallocate+0x200/0x200 [ 755.075652] ? __fget+0x356/0x510 [ 755.079084] ? do_dup2+0x450/0x450 [ 755.082621] ? vfs_write+0x393/0x540 [ 755.086315] ? fput+0x2b/0x190 [ 755.089491] ksys_ioctl+0x9b/0xc0 [ 755.092925] __x64_sys_ioctl+0x6f/0xb0 [ 755.096797] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 755.101359] do_syscall_64+0xf9/0x620 [ 755.105147] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 755.110316] RIP: 0033:0x7f03750e1089 [ 755.114017] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 755.132981] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 755.140667] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 755.147913] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 755.155167] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 executing program executing program executing program [ 755.162418] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 755.169672] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 755.191356] block nbd5: shutting down sockets [ 755.202652] block nbd4: Device being setup by another task [ 755.208427] block nbd4: Could not allocate knbd recv work queue. executing program executing program [ 755.215500] block nbd1: Device being setup by another task [ 755.221462] block nbd1: Could not allocate knbd recv work queue. [ 755.232540] block nbd2: Device being setup by another task [ 755.234370] block nbd4: shutting down sockets [ 755.244292] block nbd1: shutting down sockets [ 755.252539] block nbd5: Device being setup by another task [ 755.273478] FAULT_INJECTION: forcing a failure. [ 755.273478] name failslab, interval 1, probability 0, space 0, times 0 [ 755.283153] block nbd5: Device being setup by another task [ 755.285583] CPU: 0 PID: 8945 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 755.293145] FAULT_INJECTION: forcing a failure. [ 755.293145] name failslab, interval 1, probability 0, space 0, times 0 [ 755.298190] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 755.298195] Call Trace: [ 755.298214] dump_stack+0x1fc/0x2ef [ 755.298233] should_fail.cold+0xa/0xf [ 755.298251] ? setup_fault_attr+0x200/0x200 [ 755.298264] ? lock_acquire+0x170/0x3c0 [ 755.298283] __should_failslab+0x115/0x180 [ 755.341201] should_failslab+0x5/0x10 [ 755.344994] kmem_cache_alloc_node+0x245/0x3b0 [ 755.349575] __alloc_skb+0x71/0x560 [ 755.353201] alloc_uevent_skb+0x7b/0x210 [ 755.357254] kobject_uevent_env+0xa90/0x1480 [ 755.361654] ? nbd_size_update+0x28a/0x660 [ 755.365882] ? queue_work_on+0x11a/0x1f0 [ 755.369936] nbd_start_device+0x811/0xd60 [ 755.374093] nbd_ioctl+0x62c/0xbe0 [ 755.377631] ? _copy_from_user+0xd2/0x130 [ 755.381772] ? nbd_disconnect_and_put+0x190/0x190 [ 755.386620] ? __lock_acquire+0x6de/0x3ff0 [ 755.390853] ? nbd_disconnect_and_put+0x190/0x190 [ 755.395689] blkdev_ioctl+0x5cb/0x1a80 [ 755.399568] ? blkpg_ioctl+0x9d0/0x9d0 [ 755.403450] ? get_pid_task+0xf4/0x190 [ 755.407326] ? mark_held_locks+0xf0/0xf0 [ 755.411376] ? proc_fail_nth_write+0x95/0x1d0 [ 755.415871] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 755.420797] ? __fdget_pos+0x26f/0x310 [ 755.424679] block_ioctl+0xe9/0x130 [ 755.428294] ? blkdev_fallocate+0x3f0/0x3f0 [ 755.432608] do_vfs_ioctl+0xcdb/0x12e0 [ 755.436488] ? lock_downgrade+0x720/0x720 [ 755.440626] ? check_preemption_disabled+0x41/0x280 [ 755.445743] ? ioctl_preallocate+0x200/0x200 [ 755.450143] ? __fget+0x356/0x510 [ 755.453594] ? do_dup2+0x450/0x450 [ 755.457126] ? vfs_write+0x393/0x540 [ 755.460828] ? fput+0x2b/0x190 [ 755.464011] ksys_ioctl+0x9b/0xc0 [ 755.467454] __x64_sys_ioctl+0x6f/0xb0 [ 755.471336] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 755.475907] do_syscall_64+0xf9/0x620 [ 755.479700] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 755.484883] RIP: 0033:0x7f03750e1089 [ 755.488586] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 755.507473] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 755.515175] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 executing program [ 755.522428] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 755.529684] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 755.537026] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 755.544282] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 755.551558] CPU: 1 PID: 8934 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 755.559445] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 755.568792] Call Trace: [ 755.571383] dump_stack+0x1fc/0x2ef [ 755.575016] should_fail.cold+0xa/0xf [ 755.578686] block nbd3: shutting down sockets [ 755.578816] ? setup_fault_attr+0x200/0x200 [ 755.585789] FAULT_INJECTION: forcing a failure. [ 755.585789] name failslab, interval 1, probability 0, space 0, times 0 [ 755.587598] ? lock_acquire+0x170/0x3c0 [ 755.587619] __should_failslab+0x115/0x180 [ 755.606953] should_failslab+0x5/0x10 [ 755.610743] __kmalloc_track_caller+0x2a6/0x3c0 [ 755.615402] ? kvasprintf_const+0x60/0x190 [ 755.619630] kvasprintf+0xb5/0x150 [ 755.623159] ? bust_spinlocks+0xe0/0xe0 [ 755.627132] ? mark_held_locks+0xa6/0xf0 [ 755.631192] kvasprintf_const+0x60/0x190 [ 755.635251] kobject_set_name_vargs+0x56/0x150 [ 755.639821] kobject_add+0x10d/0x1c0 [ 755.643523] ? kset_create_and_add+0x1a0/0x1a0 [ 755.648100] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 755.652759] ? lock_downgrade+0x720/0x720 [ 755.656897] ? kernfs_put.part.0+0x225/0x590 [ 755.661299] blk_mq_register_hctx+0x23c/0x2c0 [ 755.665784] blk_mq_sysfs_register+0x143/0x1c0 [ 755.670355] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 755.675361] ? workqueue_sysfs_register+0x391/0x3e0 [ 755.680371] ? blk_mq_init_queue+0xa0/0xa0 [ 755.684613] nbd_start_device+0x1f2/0xd60 [ 755.688751] ? security_capable+0x8f/0xc0 [ 755.692892] nbd_ioctl+0x62c/0xbe0 [ 755.696429] ? _copy_from_user+0xd2/0x130 [ 755.700570] ? nbd_disconnect_and_put+0x190/0x190 [ 755.705430] ? __lock_acquire+0x6de/0x3ff0 [ 755.709654] ? nbd_disconnect_and_put+0x190/0x190 [ 755.714484] blkdev_ioctl+0x5cb/0x1a80 [ 755.718360] ? blkpg_ioctl+0x9d0/0x9d0 [ 755.722239] ? get_pid_task+0xf4/0x190 [ 755.726419] ? mark_held_locks+0xf0/0xf0 [ 755.730470] ? proc_fail_nth_write+0x95/0x1d0 [ 755.734955] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 755.739871] ? __fdget_pos+0x26f/0x310 [ 755.743752] block_ioctl+0xe9/0x130 [ 755.747364] ? blkdev_fallocate+0x3f0/0x3f0 [ 755.751673] do_vfs_ioctl+0xcdb/0x12e0 [ 755.755549] ? lock_downgrade+0x720/0x720 [ 755.759688] ? check_preemption_disabled+0x41/0x280 [ 755.764694] ? ioctl_preallocate+0x200/0x200 [ 755.769093] ? __fget+0x356/0x510 [ 755.772536] ? do_dup2+0x450/0x450 [ 755.776234] ? vfs_write+0x393/0x540 [ 755.779937] ? fput+0x2b/0x190 [ 755.783123] ksys_ioctl+0x9b/0xc0 [ 755.786566] __x64_sys_ioctl+0x6f/0xb0 [ 755.790444] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 755.795014] do_syscall_64+0xf9/0x620 [ 755.798808] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 755.803982] RIP: 0033:0x7f03750e1089 [ 755.807683] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 755.826568] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 755.834265] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 755.841520] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 755.848776] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 755.856031] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 755.863286] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 executing program [ 755.870560] CPU: 0 PID: 8944 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 755.872398] kobject: can not set name properly! [ 755.878437] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 755.878442] Call Trace: [ 755.878462] dump_stack+0x1fc/0x2ef [ 755.878481] should_fail.cold+0xa/0xf [ 755.878498] ? setup_fault_attr+0x200/0x200 [ 755.878514] ? lock_acquire+0x170/0x3c0 [ 755.910732] __should_failslab+0x115/0x180 [ 755.914976] should_failslab+0x5/0x10 [ 755.918773] kmem_cache_alloc_node+0x245/0x3b0 [ 755.923341] __alloc_skb+0x71/0x560 [ 755.926955] alloc_uevent_skb+0x7b/0x210 [ 755.931001] kobject_uevent_env+0xa90/0x1480 [ 755.935394] ? nbd_size_update+0x28a/0x660 [ 755.939608] ? queue_work_on+0x11a/0x1f0 [ 755.943648] nbd_start_device+0x811/0xd60 [ 755.947779] nbd_ioctl+0x62c/0xbe0 [ 755.951299] ? _copy_from_user+0xd2/0x130 [ 755.955434] ? nbd_disconnect_and_put+0x190/0x190 [ 755.960281] ? __lock_acquire+0x6de/0x3ff0 [ 755.964497] ? nbd_disconnect_and_put+0x190/0x190 [ 755.969323] blkdev_ioctl+0x5cb/0x1a80 [ 755.973192] ? blkpg_ioctl+0x9d0/0x9d0 [ 755.977065] ? get_pid_task+0xf4/0x190 [ 755.980931] ? mark_held_locks+0xf0/0xf0 [ 755.984978] ? proc_fail_nth_write+0x95/0x1d0 [ 755.989469] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 755.994389] ? __fdget_pos+0x26f/0x310 [ 755.998263] block_ioctl+0xe9/0x130 [ 756.001871] ? blkdev_fallocate+0x3f0/0x3f0 [ 756.006177] do_vfs_ioctl+0xcdb/0x12e0 [ 756.010075] ? lock_downgrade+0x720/0x720 [ 756.014204] ? check_preemption_disabled+0x41/0x280 [ 756.019291] ? ioctl_preallocate+0x200/0x200 [ 756.023769] ? __fget+0x356/0x510 [ 756.027211] ? do_dup2+0x450/0x450 [ 756.030737] ? vfs_write+0x393/0x540 [ 756.034439] ? fput+0x2b/0x190 [ 756.037619] ksys_ioctl+0x9b/0xc0 [ 756.041062] __x64_sys_ioctl+0x6f/0xb0 [ 756.044929] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 756.049500] do_syscall_64+0xf9/0x620 [ 756.053292] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 756.058459] RIP: 0033:0x7f03750e1089 [ 756.062154] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 756.081034] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 756.088723] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 756.095976] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 756.103232] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 756.110485] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 756.117747] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 executing program executing program [ 756.127044] block nbd1: Could not allocate knbd recv work queue. [ 756.133537] block nbd4: Could not allocate knbd recv work queue. [ 756.140986] block nbd4: shutting down sockets [ 756.146109] block nbd2: shutting down sockets [ 756.147574] block nbd1: shutting down sockets [ 756.155556] block nbd0: shutting down sockets [ 756.162503] block nbd5: Device being setup by another task [ 756.168498] block nbd5: Could not allocate knbd recv work queue. executing program executing program executing program executing program [ 756.183795] block nbd5: shutting down sockets [ 756.202626] block nbd3: Device being setup by another task [ 756.208390] block nbd3: Could not allocate knbd recv work queue. [ 756.216180] block nbd3: shutting down sockets [ 756.235218] FAULT_INJECTION: forcing a failure. [ 756.235218] name failslab, interval 1, probability 0, space 0, times 0 [ 756.246629] FAULT_INJECTION: forcing a failure. [ 756.246629] name failslab, interval 1, probability 0, space 0, times 0 [ 756.249309] CPU: 1 PID: 8984 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 756.265664] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 756.275003] Call Trace: [ 756.277594] dump_stack+0x1fc/0x2ef [ 756.281225] should_fail.cold+0xa/0xf [ 756.285028] ? setup_fault_attr+0x200/0x200 [ 756.289430] ? lock_acquire+0x170/0x3c0 [ 756.293404] __should_failslab+0x115/0x180 [ 756.297651] should_failslab+0x5/0x10 [ 756.301450] kmem_cache_alloc_node+0x245/0x3b0 [ 756.306036] __alloc_skb+0x71/0x560 [ 756.309663] alloc_uevent_skb+0x7b/0x210 [ 756.313722] kobject_uevent_env+0xa90/0x1480 [ 756.318127] ? nbd_size_update+0x28a/0x660 [ 756.322361] ? queue_work_on+0x11a/0x1f0 [ 756.326423] nbd_start_device+0x811/0xd60 [ 756.330570] nbd_ioctl+0x62c/0xbe0 [ 756.334104] ? _copy_from_user+0xd2/0x130 [ 756.338244] ? nbd_disconnect_and_put+0x190/0x190 [ 756.343082] ? __lock_acquire+0x6de/0x3ff0 [ 756.347314] ? nbd_disconnect_and_put+0x190/0x190 [ 756.352151] blkdev_ioctl+0x5cb/0x1a80 [ 756.356058] ? blkpg_ioctl+0x9d0/0x9d0 [ 756.359934] ? get_pid_task+0xf4/0x190 [ 756.363809] ? mark_held_locks+0xf0/0xf0 [ 756.367872] ? proc_fail_nth_write+0x95/0x1d0 [ 756.372364] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 756.377288] ? __fdget_pos+0x26f/0x310 [ 756.381177] block_ioctl+0xe9/0x130 [ 756.384794] ? blkdev_fallocate+0x3f0/0x3f0 [ 756.389112] do_vfs_ioctl+0xcdb/0x12e0 [ 756.392994] ? lock_downgrade+0x720/0x720 [ 756.397142] ? check_preemption_disabled+0x41/0x280 [ 756.402149] ? ioctl_preallocate+0x200/0x200 [ 756.406549] ? __fget+0x356/0x510 [ 756.409991] ? do_dup2+0x450/0x450 [ 756.413520] ? vfs_write+0x393/0x540 [ 756.417222] ? fput+0x2b/0x190 [ 756.420409] ksys_ioctl+0x9b/0xc0 [ 756.423855] __x64_sys_ioctl+0x6f/0xb0 [ 756.427735] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 756.432307] do_syscall_64+0xf9/0x620 [ 756.436276] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 756.441451] RIP: 0033:0x7f03750e1089 [ 756.445152] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 756.464045] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 756.471741] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 756.479027] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 756.486283] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 756.493537] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 756.500792] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 756.508109] CPU: 0 PID: 8986 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 756.509290] block nbd0: shutting down sockets [ 756.515986] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 756.515991] Call Trace: [ 756.516010] dump_stack+0x1fc/0x2ef [ 756.516028] should_fail.cold+0xa/0xf [ 756.516043] ? setup_fault_attr+0x200/0x200 [ 756.516060] ? lock_acquire+0x170/0x3c0 [ 756.548103] __should_failslab+0x115/0x180 [ 756.552327] should_failslab+0x5/0x10 [ 756.556107] __kmalloc+0x2ab/0x3c0 [ 756.559628] ? kobject_get_path+0xbf/0x240 [ 756.563845] kobject_get_path+0xbf/0x240 [ 756.567891] kobject_uevent_env+0x25c/0x1480 [ 756.572295] ? nbd_size_update+0x28a/0x660 [ 756.576518] ? queue_work_on+0x11a/0x1f0 [ 756.580559] nbd_start_device+0x811/0xd60 [ 756.584694] nbd_ioctl+0x62c/0xbe0 [ 756.588215] ? _copy_from_user+0xd2/0x130 [ 756.592342] ? nbd_disconnect_and_put+0x190/0x190 [ 756.597170] ? __lock_acquire+0x6de/0x3ff0 [ 756.601386] ? nbd_disconnect_and_put+0x190/0x190 [ 756.606209] blkdev_ioctl+0x5cb/0x1a80 [ 756.610077] ? blkpg_ioctl+0x9d0/0x9d0 [ 756.613943] ? get_pid_task+0xf4/0x190 [ 756.618076] ? mark_held_locks+0xf0/0xf0 [ 756.622130] ? proc_fail_nth_write+0x95/0x1d0 [ 756.626611] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 756.631528] ? __fdget_pos+0x26f/0x310 [ 756.635408] block_ioctl+0xe9/0x130 [ 756.639012] ? blkdev_fallocate+0x3f0/0x3f0 [ 756.643312] do_vfs_ioctl+0xcdb/0x12e0 [ 756.647179] ? lock_downgrade+0x720/0x720 [ 756.651309] ? check_preemption_disabled+0x41/0x280 [ 756.656302] ? ioctl_preallocate+0x200/0x200 [ 756.660690] ? __fget+0x356/0x510 [ 756.664127] ? do_dup2+0x450/0x450 [ 756.667644] ? vfs_write+0x393/0x540 [ 756.671345] ? fput+0x2b/0x190 [ 756.674522] ksys_ioctl+0x9b/0xc0 [ 756.677963] __x64_sys_ioctl+0x6f/0xb0 [ 756.681840] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 756.686401] do_syscall_64+0xf9/0x620 [ 756.690194] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 756.695370] RIP: 0033:0x7f03750e1089 [ 756.699069] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 756.718044] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 756.725732] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 executing program [ 756.732982] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 756.740232] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 756.747481] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 756.754730] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 756.763196] block nbd5: shutting down sockets [ 756.771898] FAULT_INJECTION: forcing a failure. [ 756.771898] name fail_page_alloc, interval 1, probability 0, space 0, times 0 executing program [ 756.783715] CPU: 1 PID: 8983 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 756.791676] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 756.801018] Call Trace: [ 756.803609] dump_stack+0x1fc/0x2ef [ 756.807228] should_fail.cold+0xa/0xf [ 756.811011] ? setup_fault_attr+0x200/0x200 [ 756.815315] ? _raw_spin_unlock_irqrestore+0x66/0xe0 [ 756.820401] ? __wake_up_common_lock+0xe0/0x170 [ 756.825056] __alloc_pages_nodemask+0x239/0x2890 [ 756.829799] ? d_add+0x393/0x650 [ 756.833150] ? __lock_acquire+0x6de/0x3ff0 [ 756.837373] ? _raw_spin_unlock+0x29/0x40 [ 756.841511] ? gfp_pfmemalloc_allowed+0x150/0x150 [ 756.846348] ? __lookup_slow+0x298/0x4a0 [ 756.850406] ? follow_dotdot_rcu+0x1040/0x1040 [ 756.854980] ? __d_lookup+0x411/0x710 [ 756.858766] cache_grow_begin+0xa4/0x8a0 [ 756.862811] ? setup_fault_attr+0x200/0x200 [ 756.867119] ? cache_alloc_pfmemalloc+0x1e/0x140 [ 756.871864] cache_alloc_refill+0x273/0x340 [ 756.876176] kmem_cache_alloc+0x346/0x370 [ 756.880305] alloc_inode+0xab/0x180 [ 756.883910] new_inode+0x1d/0xf0 [ 756.887283] debugfs_get_inode+0x1a/0x130 [ 756.891422] __debugfs_create_file+0xb2/0x480 [ 756.895928] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 756.901111] ? kvm_clock_get_cycles+0x14/0x30 [ 756.905587] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 756.910414] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 756.915321] ? init_srcu_struct_fields+0xca6/0x1190 [ 756.920332] ? srcu_reschedule+0x120/0x120 [ 756.924558] ? __raw_spin_lock_init+0x28/0x100 [ 756.929124] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 756.933860] ? nbd_clear_que+0x160/0x160 [ 756.937905] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 756.942928] ? workqueue_sysfs_register+0x391/0x3e0 [ 756.947939] ? blk_mq_init_queue+0xa0/0xa0 [ 756.952155] ? apparmor_sb_mount+0x970/0x970 [ 756.956561] nbd_start_device+0x1f2/0xd60 [ 756.960692] ? security_capable+0x8f/0xc0 [ 756.964835] nbd_ioctl+0x62c/0xbe0 [ 756.968365] ? _copy_from_user+0xd2/0x130 [ 756.972501] ? nbd_disconnect_and_put+0x190/0x190 [ 756.977337] ? __lock_acquire+0x6de/0x3ff0 [ 756.981562] ? nbd_disconnect_and_put+0x190/0x190 [ 756.986396] blkdev_ioctl+0x5cb/0x1a80 [ 756.990267] ? blkpg_ioctl+0x9d0/0x9d0 [ 756.994139] ? get_pid_task+0xf4/0x190 [ 756.998011] ? mark_held_locks+0xf0/0xf0 [ 757.002055] ? proc_fail_nth_write+0x95/0x1d0 [ 757.006530] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 757.011437] ? __fdget_pos+0x26f/0x310 [ 757.015312] block_ioctl+0xe9/0x130 [ 757.018921] ? blkdev_fallocate+0x3f0/0x3f0 [ 757.023222] do_vfs_ioctl+0xcdb/0x12e0 [ 757.027092] ? lock_downgrade+0x720/0x720 [ 757.031220] ? check_preemption_disabled+0x41/0x280 [ 757.036227] ? ioctl_preallocate+0x200/0x200 [ 757.040630] ? __fget+0x356/0x510 [ 757.044067] ? do_dup2+0x450/0x450 [ 757.047593] ? vfs_write+0x393/0x540 [ 757.051296] ? fput+0x2b/0x190 [ 757.054472] ksys_ioctl+0x9b/0xc0 [ 757.057908] __x64_sys_ioctl+0x6f/0xb0 [ 757.061783] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 757.066347] do_syscall_64+0xf9/0x620 [ 757.070133] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 757.075302] RIP: 0033:0x7f03750e1089 [ 757.078993] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 757.097870] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 757.105571] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 757.112831] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 757.120084] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 757.127340] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 757.134594] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 757.143658] FAULT_INJECTION: forcing a failure. [ 757.143658] name failslab, interval 1, probability 0, space 0, times 0 [ 757.153069] FAULT_INJECTION: forcing a failure. [ 757.153069] name failslab, interval 1, probability 0, space 0, times 0 [ 757.165775] block nbd4: shutting down sockets [ 757.170591] CPU: 1 PID: 8977 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 757.178471] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 757.187819] Call Trace: [ 757.190411] dump_stack+0x1fc/0x2ef [ 757.194049] should_fail.cold+0xa/0xf [ 757.197850] ? setup_fault_attr+0x200/0x200 [ 757.202165] ? lock_acquire+0x170/0x3c0 [ 757.206145] __should_failslab+0x115/0x180 [ 757.210385] should_failslab+0x5/0x10 [ 757.214188] kmem_cache_alloc+0x277/0x370 [ 757.218337] __d_alloc+0x2b/0xa10 [ 757.221786] ? __bpf_address_lookup+0x330/0x330 [ 757.226456] ? check_preemption_disabled+0x41/0x280 [ 757.231464] d_alloc+0x4a/0x230 [ 757.234735] d_alloc_parallel+0xeb/0x19e0 [ 757.238887] ? mark_held_locks+0xf0/0xf0 [ 757.242950] ? __d_lookup_rcu+0x6b0/0x6b0 [ 757.247089] ? mark_held_locks+0xf0/0xf0 [ 757.251140] ? __lockdep_init_map+0x100/0x5a0 [ 757.255639] ? __lockdep_init_map+0x100/0x5a0 [ 757.260135] __lookup_slow+0x18d/0x4a0 [ 757.264022] ? check_preemption_disabled+0x41/0x280 [ 757.269036] ? follow_dotdot_rcu+0x1040/0x1040 [ 757.273624] ? __d_lookup+0x411/0x710 [ 757.277439] ? d_lookup+0x18e/0x250 [ 757.281065] lookup_one_len+0x163/0x190 [ 757.285035] ? try_lookup_one_len+0x180/0x180 [ 757.289525] start_creating+0xc9/0x220 [ 757.293401] __debugfs_create_file+0x5e/0x480 [ 757.297889] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 757.303066] ? kvm_clock_get_cycles+0x14/0x30 [ 757.307551] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 757.312383] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 757.317301] ? init_srcu_struct_fields+0xca6/0x1190 [ 757.322324] ? srcu_reschedule+0x120/0x120 [ 757.326556] ? __raw_spin_lock_init+0x28/0x100 [ 757.331138] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 757.335896] ? nbd_clear_que+0x160/0x160 [ 757.339964] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 757.344972] ? workqueue_sysfs_register+0x391/0x3e0 [ 757.349989] ? blk_mq_init_queue+0xa0/0xa0 [ 757.354227] ? apparmor_sb_mount+0x970/0x970 [ 757.358647] nbd_start_device+0x1f2/0xd60 [ 757.362794] ? security_capable+0x8f/0xc0 [ 757.366950] nbd_ioctl+0x62c/0xbe0 [ 757.370488] ? _copy_from_user+0xd2/0x130 [ 757.374632] ? nbd_disconnect_and_put+0x190/0x190 [ 757.379474] ? __lock_acquire+0x6de/0x3ff0 [ 757.383703] ? nbd_disconnect_and_put+0x190/0x190 executing program [ 757.388543] blkdev_ioctl+0x5cb/0x1a80 [ 757.392421] ? blkpg_ioctl+0x9d0/0x9d0 [ 757.396301] ? get_pid_task+0xf4/0x190 [ 757.400178] ? mark_held_locks+0xf0/0xf0 [ 757.404233] ? proc_fail_nth_write+0x95/0x1d0 [ 757.408716] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 757.413636] ? __fdget_pos+0x26f/0x310 [ 757.417527] block_ioctl+0xe9/0x130 [ 757.421147] ? blkdev_fallocate+0x3f0/0x3f0 [ 757.425459] do_vfs_ioctl+0xcdb/0x12e0 [ 757.429337] ? lock_downgrade+0x720/0x720 [ 757.433481] ? check_preemption_disabled+0x41/0x280 [ 757.438488] ? ioctl_preallocate+0x200/0x200 [ 757.442889] ? __fget+0x356/0x510 [ 757.446334] ? do_dup2+0x450/0x450 [ 757.449865] ? vfs_write+0x393/0x540 [ 757.453570] ? fput+0x2b/0x190 [ 757.456757] ksys_ioctl+0x9b/0xc0 [ 757.460206] __x64_sys_ioctl+0x6f/0xb0 [ 757.464084] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 757.468660] do_syscall_64+0xf9/0x620 [ 757.472462] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 757.477645] RIP: 0033:0x7f03750e1089 [ 757.481347] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 757.500237] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 757.507934] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 757.515190] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 757.522448] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 757.529706] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 757.536963] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 757.544242] CPU: 0 PID: 8982 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 757.545458] block nbd3: Device being setup by another task [ 757.552117] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 757.552122] Call Trace: [ 757.552141] dump_stack+0x1fc/0x2ef [ 757.552158] should_fail.cold+0xa/0xf [ 757.558938] block nbd3: Could not allocate knbd recv work queue. [ 757.567099] ? setup_fault_attr+0x200/0x200 executing program [ 757.567114] ? lock_acquire+0x170/0x3c0 [ 757.567134] __should_failslab+0x115/0x180 [ 757.572692] block nbd3: shutting down sockets [ 757.573318] should_failslab+0x5/0x10 [ 757.573334] kmem_cache_alloc+0x277/0x370 [ 757.585556] block nbd2: shutting down sockets [ 757.587557] __d_alloc+0x2b/0xa10 [ 757.587573] ? __bpf_address_lookup+0x330/0x330 [ 757.620759] ? check_preemption_disabled+0x41/0x280 [ 757.625777] d_alloc+0x4a/0x230 [ 757.629062] d_alloc_parallel+0xeb/0x19e0 [ 757.633224] ? mark_held_locks+0xf0/0xf0 [ 757.637280] ? __d_lookup_rcu+0x6b0/0x6b0 [ 757.641410] ? mark_held_locks+0xf0/0xf0 [ 757.645451] ? __lockdep_init_map+0x100/0x5a0 [ 757.649924] ? __lockdep_init_map+0x100/0x5a0 [ 757.654402] __lookup_slow+0x18d/0x4a0 [ 757.658275] ? check_preemption_disabled+0x41/0x280 [ 757.663272] ? follow_dotdot_rcu+0x1040/0x1040 [ 757.667838] ? __d_lookup+0x411/0x710 [ 757.671624] ? d_lookup+0x18e/0x250 [ 757.675233] lookup_one_len+0x163/0x190 [ 757.679195] ? try_lookup_one_len+0x180/0x180 [ 757.683674] start_creating+0xc9/0x220 [ 757.687548] __debugfs_create_file+0x5e/0x480 [ 757.692028] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 757.697197] ? kvm_clock_get_cycles+0x14/0x30 [ 757.701670] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 757.706499] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 757.711433] ? init_srcu_struct_fields+0xca6/0x1190 [ 757.716439] ? srcu_reschedule+0x120/0x120 [ 757.720664] ? __raw_spin_lock_init+0x28/0x100 [ 757.725241] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 757.729987] ? nbd_clear_que+0x160/0x160 [ 757.734035] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 757.739037] ? workqueue_sysfs_register+0x391/0x3e0 [ 757.744040] ? blk_mq_init_queue+0xa0/0xa0 [ 757.748265] ? apparmor_sb_mount+0x970/0x970 [ 757.752665] nbd_start_device+0x1f2/0xd60 [ 757.756794] ? security_capable+0x8f/0xc0 [ 757.760933] nbd_ioctl+0x62c/0xbe0 [ 757.764458] ? _copy_from_user+0xd2/0x130 [ 757.768590] ? nbd_disconnect_and_put+0x190/0x190 [ 757.773427] ? __lock_acquire+0x6de/0x3ff0 [ 757.777646] ? nbd_disconnect_and_put+0x190/0x190 [ 757.782470] blkdev_ioctl+0x5cb/0x1a80 [ 757.786341] ? blkpg_ioctl+0x9d0/0x9d0 [ 757.790208] ? get_pid_task+0xf4/0x190 [ 757.794075] ? mark_held_locks+0xf0/0xf0 [ 757.798122] ? proc_fail_nth_write+0x95/0x1d0 [ 757.802594] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 757.807504] ? __fdget_pos+0x26f/0x310 [ 757.811388] block_ioctl+0xe9/0x130 [ 757.814994] ? blkdev_fallocate+0x3f0/0x3f0 [ 757.819302] do_vfs_ioctl+0xcdb/0x12e0 [ 757.823176] ? lock_downgrade+0x720/0x720 [ 757.827305] ? check_preemption_disabled+0x41/0x280 [ 757.832299] ? ioctl_preallocate+0x200/0x200 [ 757.836688] ? __fget+0x356/0x510 [ 757.840120] ? do_dup2+0x450/0x450 [ 757.843635] ? vfs_write+0x393/0x540 [ 757.847327] ? fput+0x2b/0x190 [ 757.850504] ksys_ioctl+0x9b/0xc0 [ 757.853944] __x64_sys_ioctl+0x6f/0xb0 [ 757.857813] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 757.862377] do_syscall_64+0xf9/0x620 [ 757.866159] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 757.871326] RIP: 0033:0x7f03750e1089 executing program [ 757.875024] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 757.893906] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 757.901590] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 757.908840] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 757.916085] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 757.923333] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 757.930578] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 executing program [ 757.948922] block nbd1: shutting down sockets [ 757.962527] block nbd0: Device being setup by another task [ 757.970078] block nbd5: Device being setup by another task [ 757.976164] block nbd0: Could not allocate knbd recv work queue. [ 757.982683] block nbd2: Device being setup by another task [ 757.983445] block nbd5: Could not allocate knbd recv work queue. executing program executing program executing program [ 757.989137] block nbd2: Could not allocate knbd recv work queue. [ 757.994739] block nbd4: Device being setup by another task [ 758.008246] block nbd0: shutting down sockets [ 758.008296] block nbd2: shutting down sockets [ 758.015661] block nbd5: shutting down sockets [ 758.033273] FAULT_INJECTION: forcing a failure. [ 758.033273] name failslab, interval 1, probability 0, space 0, times 0 [ 758.044565] CPU: 0 PID: 9020 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 758.052437] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 758.061778] Call Trace: [ 758.064349] dump_stack+0x1fc/0x2ef [ 758.067963] should_fail.cold+0xa/0xf [ 758.071756] ? setup_fault_attr+0x200/0x200 [ 758.076068] ? lock_acquire+0x170/0x3c0 [ 758.080033] __should_failslab+0x115/0x180 [ 758.084257] should_failslab+0x5/0x10 [ 758.088039] kmem_cache_alloc_node_trace+0x244/0x3b0 [ 758.093214] __kmalloc_node_track_caller+0x38/0x70 [ 758.098124] __alloc_skb+0xae/0x560 [ 758.101732] alloc_uevent_skb+0x7b/0x210 [ 758.105775] kobject_uevent_env+0xa90/0x1480 [ 758.110167] ? nbd_size_update+0x28a/0x660 [ 758.114383] ? queue_work_on+0x11a/0x1f0 [ 758.118427] nbd_start_device+0x811/0xd60 [ 758.122557] nbd_ioctl+0x62c/0xbe0 [ 758.126085] ? _copy_from_user+0xd2/0x130 [ 758.130216] ? nbd_disconnect_and_put+0x190/0x190 [ 758.135057] ? __lock_acquire+0x6de/0x3ff0 [ 758.139280] ? nbd_disconnect_and_put+0x190/0x190 [ 758.144114] blkdev_ioctl+0x5cb/0x1a80 [ 758.147989] ? blkpg_ioctl+0x9d0/0x9d0 [ 758.151872] ? get_pid_task+0xf4/0x190 [ 758.155747] ? mark_held_locks+0xf0/0xf0 [ 758.159795] ? proc_fail_nth_write+0x95/0x1d0 [ 758.164272] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 758.169181] ? __fdget_pos+0x26f/0x310 [ 758.173051] block_ioctl+0xe9/0x130 [ 758.176660] ? blkdev_fallocate+0x3f0/0x3f0 [ 758.180968] do_vfs_ioctl+0xcdb/0x12e0 [ 758.184838] ? lock_downgrade+0x720/0x720 [ 758.188967] ? check_preemption_disabled+0x41/0x280 [ 758.193969] ? ioctl_preallocate+0x200/0x200 [ 758.198366] ? __fget+0x356/0x510 [ 758.201811] ? do_dup2+0x450/0x450 [ 758.205340] ? vfs_write+0x393/0x540 [ 758.209036] ? fput+0x2b/0x190 [ 758.212222] ksys_ioctl+0x9b/0xc0 [ 758.215658] __x64_sys_ioctl+0x6f/0xb0 [ 758.219532] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 758.224103] do_syscall_64+0xf9/0x620 [ 758.227892] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 758.233065] RIP: 0033:0x7f03750e1089 [ 758.236759] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 758.255697] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 758.263400] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 758.270652] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 758.277923] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 758.285191] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 758.292453] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 executing program [ 758.302781] block nbd3: shutting down sockets [ 758.315198] FAULT_INJECTION: forcing a failure. [ 758.315198] name failslab, interval 1, probability 0, space 0, times 0 [ 758.326647] CPU: 0 PID: 9019 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 758.334521] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 758.343858] Call Trace: [ 758.346438] dump_stack+0x1fc/0x2ef [ 758.350056] should_fail.cold+0xa/0xf [ 758.353848] ? setup_fault_attr+0x200/0x200 [ 758.358151] ? lock_acquire+0x170/0x3c0 [ 758.362107] __should_failslab+0x115/0x180 [ 758.366331] should_failslab+0x5/0x10 [ 758.370123] __kmalloc_track_caller+0x2a6/0x3c0 [ 758.374774] ? kvasprintf_const+0x60/0x190 [ 758.378997] kvasprintf+0xb5/0x150 [ 758.382518] ? bust_spinlocks+0xe0/0xe0 [ 758.386483] ? mark_held_locks+0xa6/0xf0 [ 758.390533] kvasprintf_const+0x60/0x190 [ 758.394575] kobject_set_name_vargs+0x56/0x150 [ 758.399137] kobject_add+0x10d/0x1c0 [ 758.402835] ? kset_create_and_add+0x1a0/0x1a0 [ 758.407398] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 758.412060] ? lock_downgrade+0x720/0x720 [ 758.416205] ? kernfs_put.part.0+0x225/0x590 [ 758.420615] blk_mq_register_hctx+0x23c/0x2c0 [ 758.425099] blk_mq_sysfs_register+0x143/0x1c0 [ 758.429671] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 758.434756] ? workqueue_sysfs_register+0x391/0x3e0 [ 758.440021] ? blk_mq_init_queue+0xa0/0xa0 [ 758.444241] nbd_start_device+0x1f2/0xd60 [ 758.448369] ? security_capable+0x8f/0xc0 [ 758.452504] nbd_ioctl+0x62c/0xbe0 [ 758.456035] ? _copy_from_user+0xd2/0x130 [ 758.460177] ? nbd_disconnect_and_put+0x190/0x190 [ 758.465001] ? __lock_acquire+0x6de/0x3ff0 [ 758.469216] ? nbd_disconnect_and_put+0x190/0x190 [ 758.474037] blkdev_ioctl+0x5cb/0x1a80 [ 758.477964] ? blkpg_ioctl+0x9d0/0x9d0 [ 758.481848] ? get_pid_task+0xf4/0x190 [ 758.485724] ? mark_held_locks+0xf0/0xf0 [ 758.489765] ? proc_fail_nth_write+0x95/0x1d0 [ 758.494241] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 758.499151] ? __fdget_pos+0x26f/0x310 [ 758.503022] block_ioctl+0xe9/0x130 [ 758.506640] ? blkdev_fallocate+0x3f0/0x3f0 [ 758.510960] do_vfs_ioctl+0xcdb/0x12e0 [ 758.514852] ? lock_downgrade+0x720/0x720 [ 758.518980] ? check_preemption_disabled+0x41/0x280 [ 758.523979] ? ioctl_preallocate+0x200/0x200 [ 758.528370] ? __fget+0x356/0x510 [ 758.531803] ? do_dup2+0x450/0x450 [ 758.535332] ? vfs_write+0x393/0x540 [ 758.539027] ? fput+0x2b/0x190 [ 758.542204] ksys_ioctl+0x9b/0xc0 [ 758.545638] __x64_sys_ioctl+0x6f/0xb0 [ 758.549514] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 758.554085] do_syscall_64+0xf9/0x620 [ 758.557883] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 758.563051] RIP: 0033:0x7f03750e1089 [ 758.566746] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 758.585627] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 758.593338] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 758.600587] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 758.607839] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 758.615093] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 758.622346] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 758.630871] kobject: can not set name properly! [ 758.638774] block nbd4: shutting down sockets [ 758.642876] block nbd1: Device being setup by another task [ 758.643420] block nbd2: Device being setup by another task executing program executing program executing program [ 758.648950] block nbd0: Device being setup by another task [ 758.654592] block nbd5: Device being setup by another task [ 758.669582] block nbd1: shutting down sockets [ 758.686922] block nbd0: Could not allocate knbd recv work queue. [ 758.695022] block nbd0: shutting down sockets [ 758.702382] block nbd3: Device being setup by another task [ 758.708308] block nbd3: Could not allocate knbd recv work queue. [ 758.710094] FAULT_INJECTION: forcing a failure. [ 758.710094] name failslab, interval 1, probability 0, space 0, times 0 [ 758.717740] block nbd3: shutting down sockets [ 758.732079] FAULT_INJECTION: forcing a failure. [ 758.732079] name failslab, interval 1, probability 0, space 0, times 0 [ 758.735085] CPU: 1 PID: 9034 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 executing program [ 758.751125] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 758.760474] Call Trace: [ 758.763056] dump_stack+0x1fc/0x2ef [ 758.766687] should_fail.cold+0xa/0xf [ 758.770488] ? setup_fault_attr+0x200/0x200 [ 758.774802] ? lock_acquire+0x170/0x3c0 [ 758.778778] __should_failslab+0x115/0x180 [ 758.783006] should_failslab+0x5/0x10 [ 758.786815] __kmalloc_track_caller+0x2a6/0x3c0 [ 758.791477] ? kstrdup_const+0x53/0x80 [ 758.795357] kstrdup+0x36/0x70 [ 758.798543] kstrdup_const+0x53/0x80 [ 758.802252] __kernfs_new_node+0x9b/0x680 [ 758.806393] ? kfree+0xcc/0x210 [ 758.809667] ? kobject_add+0x10d/0x1c0 [ 758.813545] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 758.818297] ? nbd_start_device+0x1f2/0xd60 [ 758.822612] ? nbd_ioctl+0x62c/0xbe0 [ 758.826315] ? blkdev_ioctl+0x5cb/0x1a80 [ 758.830369] ? do_vfs_ioctl+0xcdb/0x12e0 [ 758.834421] ? __x64_sys_ioctl+0x6f/0xb0 [ 758.838478] ? do_syscall_64+0xf9/0x620 [ 758.842530] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 758.847890] ? debug_check_no_obj_freed+0x201/0x490 [ 758.852903] kernfs_create_dir_ns+0x9e/0x230 [ 758.857305] sysfs_create_dir_ns+0x127/0x280 [ 758.861701] ? sysfs_create_mount_point+0xb0/0xb0 [ 758.866534] ? mark_held_locks+0xa6/0xf0 [ 758.870587] ? kfree+0x110/0x210 [ 758.873941] ? kfree_const+0x51/0x60 [ 758.877649] kobject_add_internal+0x2a5/0x9c0 [ 758.882158] kobject_add+0x150/0x1c0 [ 758.885881] ? kset_create_and_add+0x1a0/0x1a0 [ 758.890454] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 758.895119] ? lock_downgrade+0x720/0x720 [ 758.899260] ? kernfs_put.part.0+0x225/0x590 [ 758.903680] blk_mq_register_hctx+0x23c/0x2c0 [ 758.908173] blk_mq_sysfs_register+0x143/0x1c0 [ 758.912789] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 758.917800] ? workqueue_sysfs_register+0x391/0x3e0 [ 758.922811] ? blk_mq_init_queue+0xa0/0xa0 [ 758.927042] nbd_start_device+0x1f2/0xd60 [ 758.931182] ? security_capable+0x8f/0xc0 [ 758.935329] nbd_ioctl+0x62c/0xbe0 [ 758.938864] ? _copy_from_user+0xd2/0x130 [ 758.943005] ? nbd_disconnect_and_put+0x190/0x190 [ 758.947852] ? __lock_acquire+0x6de/0x3ff0 [ 758.952082] ? nbd_disconnect_and_put+0x190/0x190 [ 758.956914] blkdev_ioctl+0x5cb/0x1a80 [ 758.960791] ? blkpg_ioctl+0x9d0/0x9d0 [ 758.964667] ? get_pid_task+0xf4/0x190 [ 758.968554] ? mark_held_locks+0xf0/0xf0 [ 758.972611] ? proc_fail_nth_write+0x95/0x1d0 [ 758.977103] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 758.982024] ? __fdget_pos+0x26f/0x310 [ 758.985915] block_ioctl+0xe9/0x130 [ 758.989533] ? blkdev_fallocate+0x3f0/0x3f0 [ 758.993861] do_vfs_ioctl+0xcdb/0x12e0 [ 758.997749] ? lock_downgrade+0x720/0x720 [ 759.001898] ? check_preemption_disabled+0x41/0x280 [ 759.006913] ? ioctl_preallocate+0x200/0x200 [ 759.011328] ? __fget+0x356/0x510 [ 759.014784] ? do_dup2+0x450/0x450 [ 759.018317] ? vfs_write+0x393/0x540 [ 759.022027] ? fput+0x2b/0x190 [ 759.025213] ksys_ioctl+0x9b/0xc0 [ 759.028657] __x64_sys_ioctl+0x6f/0xb0 [ 759.032541] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 759.037120] do_syscall_64+0xf9/0x620 [ 759.040919] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 759.046100] RIP: 0033:0x7f03750e1089 [ 759.049808] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 759.068700] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 759.076399] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 759.083652] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 759.090926] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 759.098192] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 759.105460] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 759.112742] CPU: 0 PID: 9035 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 759.120655] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 759.122304] kobject_add_internal failed for cpu1 (error: -12 parent: 0) [ 759.130007] Call Trace: [ 759.130030] dump_stack+0x1fc/0x2ef [ 759.130048] should_fail.cold+0xa/0xf [ 759.130066] ? setup_fault_attr+0x200/0x200 [ 759.151086] ? lock_acquire+0x170/0x3c0 [ 759.154904] block nbd5: shutting down sockets [ 759.155064] __should_failslab+0x115/0x180 [ 759.163763] should_failslab+0x5/0x10 [ 759.167564] __kmalloc_track_caller+0x2a6/0x3c0 [ 759.172233] ? kstrdup_const+0x53/0x80 [ 759.176126] kstrdup+0x36/0x70 [ 759.179321] kstrdup_const+0x53/0x80 [ 759.183036] __kernfs_new_node+0x9b/0x680 [ 759.187184] ? kfree+0xcc/0x210 [ 759.190457] ? kobject_add+0x10d/0x1c0 [ 759.194324] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 759.199059] ? nbd_start_device+0x1f2/0xd60 [ 759.203359] ? nbd_ioctl+0x62c/0xbe0 [ 759.207050] ? blkdev_ioctl+0x5cb/0x1a80 [ 759.211090] ? do_vfs_ioctl+0xcdb/0x12e0 [ 759.215132] ? __x64_sys_ioctl+0x6f/0xb0 [ 759.219169] ? do_syscall_64+0xf9/0x620 [ 759.223123] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 759.228469] ? debug_check_no_obj_freed+0x201/0x490 [ 759.233483] kernfs_create_dir_ns+0x9e/0x230 [ 759.237890] sysfs_create_dir_ns+0x127/0x280 [ 759.242294] ? sysfs_create_mount_point+0xb0/0xb0 [ 759.247146] ? mark_held_locks+0xa6/0xf0 [ 759.251202] ? kfree+0x110/0x210 [ 759.254582] ? kfree_const+0x51/0x60 [ 759.258288] kobject_add_internal+0x2a5/0x9c0 [ 759.262775] kobject_add+0x150/0x1c0 [ 759.266476] ? kset_create_and_add+0x1a0/0x1a0 [ 759.271049] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 759.275711] ? lock_downgrade+0x720/0x720 [ 759.279853] ? kernfs_put.part.0+0x225/0x590 [ 759.284256] blk_mq_register_hctx+0x23c/0x2c0 [ 759.288738] blk_mq_sysfs_register+0x143/0x1c0 [ 759.293303] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 759.298299] ? workqueue_sysfs_register+0x391/0x3e0 [ 759.303306] ? blk_mq_init_queue+0xa0/0xa0 [ 759.307531] nbd_start_device+0x1f2/0xd60 [ 759.311665] ? security_capable+0x8f/0xc0 [ 759.315800] nbd_ioctl+0x62c/0xbe0 [ 759.319323] ? _copy_from_user+0xd2/0x130 [ 759.323465] ? nbd_disconnect_and_put+0x190/0x190 [ 759.328303] ? __lock_acquire+0x6de/0x3ff0 [ 759.332522] ? nbd_disconnect_and_put+0x190/0x190 [ 759.337349] blkdev_ioctl+0x5cb/0x1a80 [ 759.341227] ? blkpg_ioctl+0x9d0/0x9d0 [ 759.345122] ? get_pid_task+0xf4/0x190 [ 759.349000] ? mark_held_locks+0xf0/0xf0 [ 759.353045] ? proc_fail_nth_write+0x95/0x1d0 [ 759.357520] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 759.362439] ? __fdget_pos+0x26f/0x310 [ 759.366312] block_ioctl+0xe9/0x130 [ 759.369923] ? blkdev_fallocate+0x3f0/0x3f0 [ 759.374232] do_vfs_ioctl+0xcdb/0x12e0 [ 759.378097] ? lock_downgrade+0x720/0x720 [ 759.382276] ? check_preemption_disabled+0x41/0x280 [ 759.387285] ? ioctl_preallocate+0x200/0x200 [ 759.391686] ? __fget+0x356/0x510 [ 759.395126] ? do_dup2+0x450/0x450 [ 759.398654] ? vfs_write+0x393/0x540 [ 759.402346] ? fput+0x2b/0x190 [ 759.405520] ksys_ioctl+0x9b/0xc0 [ 759.408973] __x64_sys_ioctl+0x6f/0xb0 [ 759.412841] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 759.417402] do_syscall_64+0xf9/0x620 [ 759.421190] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 759.426359] RIP: 0033:0x7f03750e1089 [ 759.430055] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 759.448941] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 executing program [ 759.456645] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 759.463900] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 759.471150] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 759.478400] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 759.485647] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 759.495595] block nbd4: Could not allocate knbd recv work queue. executing program executing program [ 759.502611] kobject_add_internal failed for cpu1 (error: -12 parent: 0) [ 759.511193] block nbd4: shutting down sockets [ 759.518702] block nbd2: shutting down sockets [ 759.532429] block nbd1: Device being setup by another task [ 759.538498] block nbd1: Could not allocate knbd recv work queue. [ 759.545550] block nbd3: Device being setup by another task [ 759.548834] block nbd1: shutting down sockets executing program executing program executing program [ 759.551228] block nbd0: Device being setup by another task [ 759.561867] block nbd3: Could not allocate knbd recv work queue. [ 759.569711] block nbd0: Could not allocate knbd recv work queue. [ 759.571747] block nbd3: shutting down sockets [ 759.578436] block nbd0: shutting down sockets [ 759.623454] FAULT_INJECTION: forcing a failure. [ 759.623454] name failslab, interval 1, probability 0, space 0, times 0 [ 759.635415] FAULT_INJECTION: forcing a failure. [ 759.635415] name failslab, interval 1, probability 0, space 0, times 0 [ 759.636184] CPU: 0 PID: 9079 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 759.654466] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 759.663810] Call Trace: [ 759.666395] dump_stack+0x1fc/0x2ef [ 759.670023] should_fail.cold+0xa/0xf [ 759.673908] ? setup_fault_attr+0x200/0x200 [ 759.678222] ? lock_acquire+0x170/0x3c0 [ 759.682195] __should_failslab+0x115/0x180 [ 759.686426] should_failslab+0x5/0x10 [ 759.690216] kmem_cache_alloc+0x277/0x370 [ 759.694357] alloc_inode+0xab/0x180 [ 759.697974] new_inode+0x1d/0xf0 [ 759.701333] debugfs_get_inode+0x1a/0x130 [ 759.705468] __debugfs_create_file+0xb2/0x480 [ 759.709958] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 759.715140] ? kvm_clock_get_cycles+0x14/0x30 [ 759.719626] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 759.724463] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 759.729386] ? init_srcu_struct_fields+0xca6/0x1190 [ 759.734408] ? srcu_reschedule+0x120/0x120 [ 759.738634] ? __raw_spin_lock_init+0x28/0x100 [ 759.743209] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 759.747958] ? nbd_clear_que+0x160/0x160 [ 759.752013] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 759.757017] ? workqueue_sysfs_register+0x391/0x3e0 [ 759.762033] ? blk_mq_init_queue+0xa0/0xa0 [ 759.766263] ? apparmor_sb_mount+0x970/0x970 [ 759.770665] nbd_start_device+0x1f2/0xd60 [ 759.774801] ? security_capable+0x8f/0xc0 [ 759.778940] nbd_ioctl+0x62c/0xbe0 [ 759.782468] ? _copy_from_user+0xd2/0x130 [ 759.786605] ? nbd_disconnect_and_put+0x190/0x190 [ 759.791445] ? __lock_acquire+0x6de/0x3ff0 [ 759.795506] block nbd2: Could not allocate knbd recv work queue. [ 759.795671] ? nbd_disconnect_and_put+0x190/0x190 [ 759.805542] block nbd2: shutting down sockets [ 759.806630] blkdev_ioctl+0x5cb/0x1a80 [ 759.806645] ? blkpg_ioctl+0x9d0/0x9d0 [ 759.806661] ? get_pid_task+0xf4/0x190 [ 759.806675] ? mark_held_locks+0xf0/0xf0 [ 759.806691] ? proc_fail_nth_write+0x95/0x1d0 [ 759.828000] block nbd3: Could not allocate knbd recv work queue. [ 759.831373] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 759.831388] ? __fdget_pos+0x26f/0x310 [ 759.831412] block_ioctl+0xe9/0x130 [ 759.849254] block nbd3: shutting down sockets [ 759.850008] ? blkdev_fallocate+0x3f0/0x3f0 [ 759.850027] do_vfs_ioctl+0xcdb/0x12e0 [ 759.862686] ? lock_downgrade+0x720/0x720 [ 759.866842] ? check_preemption_disabled+0x41/0x280 [ 759.871862] ? ioctl_preallocate+0x200/0x200 [ 759.876271] ? __fget+0x356/0x510 [ 759.879721] ? do_dup2+0x450/0x450 [ 759.883248] ? vfs_write+0x393/0x540 [ 759.886949] ? fput+0x2b/0x190 [ 759.890141] ksys_ioctl+0x9b/0xc0 [ 759.893584] __x64_sys_ioctl+0x6f/0xb0 [ 759.897460] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 759.902030] do_syscall_64+0xf9/0x620 [ 759.905832] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 759.911010] RIP: 0033:0x7f03750e1089 [ 759.914713] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 759.933599] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 759.941292] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 759.948552] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 759.955817] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 759.963070] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc executing program executing program [ 759.970325] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 759.977599] CPU: 1 PID: 9075 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 759.985484] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 759.992974] block nbd4: shutting down sockets [ 759.994830] Call Trace: [ 759.994850] dump_stack+0x1fc/0x2ef [ 759.994866] should_fail.cold+0xa/0xf [ 760.009309] ? setup_fault_attr+0x200/0x200 [ 760.013632] ? lock_acquire+0x170/0x3c0 [ 760.017615] __should_failslab+0x115/0x180 [ 760.021865] should_failslab+0x5/0x10 [ 760.025672] kmem_cache_alloc+0x277/0x370 [ 760.027161] FAULT_INJECTION: forcing a failure. [ 760.027161] name failslab, interval 1, probability 0, space 0, times 0 [ 760.029819] __d_alloc+0x2b/0xa10 [ 760.029834] ? __bpf_address_lookup+0x330/0x330 [ 760.029849] ? check_preemption_disabled+0x41/0x280 [ 760.029867] d_alloc+0x4a/0x230 [ 760.049402] FAULT_INJECTION: forcing a failure. [ 760.049402] name failslab, interval 1, probability 0, space 0, times 0 [ 760.054107] d_alloc_parallel+0xeb/0x19e0 [ 760.054131] ? mark_held_locks+0xf0/0xf0 [ 760.054147] ? __d_lookup_rcu+0x6b0/0x6b0 [ 760.054164] ? mark_held_locks+0xf0/0xf0 [ 760.054179] ? __lockdep_init_map+0x100/0x5a0 [ 760.054192] ? __lockdep_init_map+0x100/0x5a0 [ 760.054210] __lookup_slow+0x18d/0x4a0 [ 760.054227] ? check_preemption_disabled+0x41/0x280 [ 760.102788] ? follow_dotdot_rcu+0x1040/0x1040 [ 760.107366] ? __d_lookup+0x411/0x710 [ 760.111165] ? d_lookup+0x18e/0x250 [ 760.114787] lookup_one_len+0x163/0x190 [ 760.118757] ? try_lookup_one_len+0x180/0x180 [ 760.123262] start_creating+0xc9/0x220 [ 760.127140] __debugfs_create_file+0x5e/0x480 [ 760.131637] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 760.136817] ? kvm_clock_get_cycles+0x14/0x30 [ 760.141301] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 760.146138] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 760.151056] ? init_srcu_struct_fields+0xca6/0x1190 [ 760.156065] ? srcu_reschedule+0x120/0x120 [ 760.160290] ? __raw_spin_lock_init+0x28/0x100 [ 760.164876] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 760.169633] ? nbd_clear_que+0x160/0x160 [ 760.173688] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 760.178692] ? workqueue_sysfs_register+0x391/0x3e0 [ 760.183703] ? blk_mq_init_queue+0xa0/0xa0 [ 760.187929] ? apparmor_sb_mount+0x970/0x970 [ 760.192329] nbd_start_device+0x1f2/0xd60 [ 760.196469] ? security_capable+0x8f/0xc0 [ 760.200613] nbd_ioctl+0x62c/0xbe0 [ 760.204148] ? _copy_from_user+0xd2/0x130 [ 760.208285] ? nbd_disconnect_and_put+0x190/0x190 [ 760.213121] ? __lock_acquire+0x6de/0x3ff0 [ 760.217348] ? nbd_disconnect_and_put+0x190/0x190 [ 760.222180] blkdev_ioctl+0x5cb/0x1a80 [ 760.226054] ? blkpg_ioctl+0x9d0/0x9d0 [ 760.229934] ? get_pid_task+0xf4/0x190 [ 760.233811] ? mark_held_locks+0xf0/0xf0 [ 760.237946] ? proc_fail_nth_write+0x95/0x1d0 [ 760.242427] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 760.247351] ? __fdget_pos+0x26f/0x310 [ 760.251234] block_ioctl+0xe9/0x130 [ 760.254847] ? blkdev_fallocate+0x3f0/0x3f0 [ 760.259168] do_vfs_ioctl+0xcdb/0x12e0 [ 760.263045] ? lock_downgrade+0x720/0x720 [ 760.267180] ? check_preemption_disabled+0x41/0x280 [ 760.272184] ? ioctl_preallocate+0x200/0x200 [ 760.276582] ? __fget+0x356/0x510 [ 760.280027] ? do_dup2+0x450/0x450 [ 760.283552] ? vfs_write+0x393/0x540 [ 760.287254] ? fput+0x2b/0x190 [ 760.290440] ksys_ioctl+0x9b/0xc0 [ 760.293884] __x64_sys_ioctl+0x6f/0xb0 [ 760.297767] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 760.302337] do_syscall_64+0xf9/0x620 [ 760.306129] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 760.311307] RIP: 0033:0x7f03750e1089 [ 760.315013] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 760.333905] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 760.341603] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 760.348862] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 760.356119] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 760.363376] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 760.370631] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 760.377910] CPU: 0 PID: 9097 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 760.385794] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 760.395139] Call Trace: [ 760.397729] dump_stack+0x1fc/0x2ef [ 760.401352] should_fail.cold+0xa/0xf [ 760.405143] ? setup_fault_attr+0x200/0x200 [ 760.409456] ? lock_acquire+0x170/0x3c0 [ 760.413423] __should_failslab+0x115/0x180 [ 760.417654] should_failslab+0x5/0x10 [ 760.421446] __kmalloc+0x2ab/0x3c0 [ 760.424976] ? kobject_get_path+0xbf/0x240 [ 760.429206] kobject_get_path+0xbf/0x240 [ 760.433267] kobject_uevent_env+0x25c/0x1480 [ 760.437671] ? nbd_size_update+0x28a/0x660 [ 760.441898] ? queue_work_on+0x11a/0x1f0 [ 760.445948] nbd_start_device+0x811/0xd60 [ 760.450109] nbd_ioctl+0x62c/0xbe0 [ 760.453649] ? _copy_from_user+0xd2/0x130 [ 760.457797] ? nbd_disconnect_and_put+0x190/0x190 [ 760.462651] ? __lock_acquire+0x6de/0x3ff0 [ 760.466882] ? nbd_disconnect_and_put+0x190/0x190 [ 760.471714] blkdev_ioctl+0x5cb/0x1a80 [ 760.475594] ? blkpg_ioctl+0x9d0/0x9d0 [ 760.479471] ? get_pid_task+0xf4/0x190 [ 760.483347] ? mark_held_locks+0xf0/0xf0 [ 760.487400] ? proc_fail_nth_write+0x95/0x1d0 [ 760.491886] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 760.496805] ? __fdget_pos+0x26f/0x310 [ 760.500694] block_ioctl+0xe9/0x130 [ 760.504310] ? blkdev_fallocate+0x3f0/0x3f0 [ 760.508632] do_vfs_ioctl+0xcdb/0x12e0 [ 760.512508] ? lock_downgrade+0x720/0x720 [ 760.516646] ? check_preemption_disabled+0x41/0x280 [ 760.521658] ? ioctl_preallocate+0x200/0x200 [ 760.526067] ? __fget+0x356/0x510 [ 760.529511] ? do_dup2+0x450/0x450 [ 760.533047] ? vfs_write+0x393/0x540 [ 760.536756] ? fput+0x2b/0x190 [ 760.539946] ksys_ioctl+0x9b/0xc0 [ 760.543391] __x64_sys_ioctl+0x6f/0xb0 [ 760.547270] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 760.551843] do_syscall_64+0xf9/0x620 [ 760.555640] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 760.560824] RIP: 0033:0x7f03750e1089 [ 760.564534] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 760.583420] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 760.591112] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 760.598370] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 760.605623] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 760.612920] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 760.620185] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 executing program [ 760.627460] CPU: 1 PID: 9098 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 760.635345] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 760.642714] block nbd2: Could not allocate knbd recv work queue. [ 760.644718] Call Trace: [ 760.653439] dump_stack+0x1fc/0x2ef [ 760.656739] block nbd2: shutting down sockets [ 760.657068] should_fail.cold+0xa/0xf [ 760.665331] ? setup_fault_attr+0x200/0x200 [ 760.669662] ? lock_acquire+0x170/0x3c0 [ 760.673643] __should_failslab+0x115/0x180 executing program [ 760.677879] should_failslab+0x5/0x10 [ 760.681679] kmem_cache_alloc_node+0x245/0x3b0 [ 760.686277] __alloc_skb+0x71/0x560 [ 760.689909] alloc_uevent_skb+0x7b/0x210 [ 760.693978] kobject_uevent_env+0xa90/0x1480 [ 760.696176] block nbd1: shutting down sockets [ 760.698388] ? nbd_size_update+0x28a/0x660 [ 760.698404] ? queue_work_on+0x11a/0x1f0 [ 760.711135] nbd_start_device+0x811/0xd60 [ 760.715290] nbd_ioctl+0x62c/0xbe0 [ 760.718814] ? _copy_from_user+0xd2/0x130 [ 760.722945] ? nbd_disconnect_and_put+0x190/0x190 [ 760.727773] ? __lock_acquire+0x6de/0x3ff0 [ 760.731989] ? nbd_disconnect_and_put+0x190/0x190 [ 760.736813] blkdev_ioctl+0x5cb/0x1a80 [ 760.740681] ? blkpg_ioctl+0x9d0/0x9d0 [ 760.744551] ? get_pid_task+0xf4/0x190 [ 760.748421] ? mark_held_locks+0xf0/0xf0 [ 760.752459] ? proc_fail_nth_write+0x95/0x1d0 [ 760.756936] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 760.761846] ? __fdget_pos+0x26f/0x310 [ 760.765718] block_ioctl+0xe9/0x130 [ 760.769325] ? blkdev_fallocate+0x3f0/0x3f0 [ 760.773628] do_vfs_ioctl+0xcdb/0x12e0 [ 760.777506] ? lock_downgrade+0x720/0x720 [ 760.781633] ? check_preemption_disabled+0x41/0x280 [ 760.786654] ? ioctl_preallocate+0x200/0x200 [ 760.791049] ? __fget+0x356/0x510 [ 760.794483] ? do_dup2+0x450/0x450 [ 760.798004] ? vfs_write+0x393/0x540 [ 760.801699] ? fput+0x2b/0x190 [ 760.804882] ksys_ioctl+0x9b/0xc0 [ 760.808320] __x64_sys_ioctl+0x6f/0xb0 [ 760.812195] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 760.816760] do_syscall_64+0xf9/0x620 [ 760.820543] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 760.825711] RIP: 0033:0x7f03750e1089 [ 760.829410] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 760.848349] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 760.856036] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 760.863286] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 760.870706] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 executing program executing program executing program [ 760.877961] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 760.885211] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 760.894210] block nbd5: shutting down sockets [ 760.899237] block nbd0: shutting down sockets [ 760.912322] block nbd3: Device being setup by another task [ 760.919062] block nbd3: Could not allocate knbd recv work queue. executing program executing program [ 760.929816] block nbd3: shutting down sockets [ 760.942194] block nbd4: Device being setup by another task [ 760.948022] block nbd4: Could not allocate knbd recv work queue. [ 760.956523] block nbd4: shutting down sockets [ 760.963180] block nbd2: Device being setup by another task [ 760.969929] FAULT_INJECTION: forcing a failure. [ 760.969929] name failslab, interval 1, probability 0, space 0, times 0 [ 760.981312] CPU: 0 PID: 9118 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 760.989191] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 760.998540] Call Trace: [ 761.000022] FAULT_INJECTION: forcing a failure. [ 761.000022] name failslab, interval 1, probability 0, space 0, times 0 [ 761.001129] dump_stack+0x1fc/0x2ef [ 761.001156] should_fail.cold+0xa/0xf [ 761.001175] ? setup_fault_attr+0x200/0x200 [ 761.001197] ? lock_acquire+0x170/0x3c0 [ 761.016038] FAULT_INJECTION: forcing a failure. [ 761.016038] name failslab, interval 1, probability 0, space 0, times 0 [ 761.019749] __should_failslab+0x115/0x180 [ 761.019768] should_failslab+0x5/0x10 [ 761.019782] kmem_cache_alloc_trace+0x284/0x380 [ 761.019795] ? wait_for_completion_io+0x10/0x10 [ 761.019810] ? kobj_ns_initial+0x90/0x90 [ 761.019826] call_usermodehelper_setup+0x84/0x300 [ 761.065405] kobject_uevent_env+0xe83/0x1480 [ 761.069818] ? nbd_size_update+0x28a/0x660 [ 761.074061] ? queue_work_on+0x11a/0x1f0 [ 761.078113] nbd_start_device+0x811/0xd60 [ 761.082269] nbd_ioctl+0x62c/0xbe0 [ 761.085803] ? _copy_from_user+0xd2/0x130 [ 761.089944] ? nbd_disconnect_and_put+0x190/0x190 [ 761.094884] ? __lock_acquire+0x6de/0x3ff0 [ 761.099127] ? nbd_disconnect_and_put+0x190/0x190 [ 761.104138] blkdev_ioctl+0x5cb/0x1a80 [ 761.108017] ? blkpg_ioctl+0x9d0/0x9d0 [ 761.111909] ? get_pid_task+0xf4/0x190 [ 761.115791] ? mark_held_locks+0xf0/0xf0 [ 761.119846] ? proc_fail_nth_write+0x95/0x1d0 [ 761.124339] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 761.129265] ? __fdget_pos+0x26f/0x310 [ 761.133157] block_ioctl+0xe9/0x130 [ 761.136782] ? blkdev_fallocate+0x3f0/0x3f0 [ 761.141109] do_vfs_ioctl+0xcdb/0x12e0 [ 761.144988] ? lock_downgrade+0x720/0x720 [ 761.149126] ? check_preemption_disabled+0x41/0x280 [ 761.154136] ? ioctl_preallocate+0x200/0x200 [ 761.157775] block nbd5: Could not allocate knbd recv work queue. [ 761.158543] ? __fget+0x356/0x510 [ 761.158560] ? do_dup2+0x450/0x450 [ 761.158572] ? vfs_write+0x393/0x540 [ 761.158587] ? fput+0x2b/0x190 executing program [ 761.171857] block nbd5: shutting down sockets [ 761.175397] ksys_ioctl+0x9b/0xc0 [ 761.175413] __x64_sys_ioctl+0x6f/0xb0 [ 761.175428] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 761.175442] do_syscall_64+0xf9/0x620 [ 761.175461] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 761.175472] RIP: 0033:0x7f03750e1089 [ 761.175485] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 761.175495] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 761.234217] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 761.241499] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 761.248764] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 761.256019] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 761.263275] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 761.270547] CPU: 1 PID: 9127 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 761.278433] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 761.282863] block nbd2: shutting down sockets [ 761.287783] Call Trace: [ 761.287806] dump_stack+0x1fc/0x2ef [ 761.298470] should_fail.cold+0xa/0xf [ 761.302271] ? setup_fault_attr+0x200/0x200 [ 761.306607] ? lock_acquire+0x170/0x3c0 [ 761.310594] __should_failslab+0x115/0x180 [ 761.314829] should_failslab+0x5/0x10 [ 761.318628] kmem_cache_alloc_trace+0x284/0x380 [ 761.323292] ? wait_for_completion_io+0x10/0x10 [ 761.327952] ? kobj_ns_initial+0x90/0x90 [ 761.332006] call_usermodehelper_setup+0x84/0x300 [ 761.336855] kobject_uevent_env+0xe83/0x1480 [ 761.341269] ? nbd_size_update+0x28a/0x660 [ 761.345496] ? queue_work_on+0x11a/0x1f0 [ 761.349547] nbd_start_device+0x811/0xd60 [ 761.353710] nbd_ioctl+0x62c/0xbe0 [ 761.357253] ? _copy_from_user+0xd2/0x130 [ 761.361404] ? nbd_disconnect_and_put+0x190/0x190 [ 761.366248] ? __lock_acquire+0x6de/0x3ff0 [ 761.370478] ? nbd_disconnect_and_put+0x190/0x190 [ 761.375317] blkdev_ioctl+0x5cb/0x1a80 [ 761.379196] ? blkpg_ioctl+0x9d0/0x9d0 [ 761.383072] ? get_pid_task+0xf4/0x190 [ 761.386947] ? mark_held_locks+0xf0/0xf0 [ 761.390994] ? proc_fail_nth_write+0x95/0x1d0 [ 761.395478] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 761.400396] ? __fdget_pos+0x26f/0x310 [ 761.404294] block_ioctl+0xe9/0x130 [ 761.407919] ? blkdev_fallocate+0x3f0/0x3f0 [ 761.412232] do_vfs_ioctl+0xcdb/0x12e0 [ 761.416111] ? lock_downgrade+0x720/0x720 [ 761.420249] ? check_preemption_disabled+0x41/0x280 [ 761.425252] ? ioctl_preallocate+0x200/0x200 [ 761.429746] ? __fget+0x356/0x510 [ 761.433188] ? do_dup2+0x450/0x450 [ 761.436724] ? vfs_write+0x393/0x540 [ 761.440427] ? fput+0x2b/0x190 [ 761.443615] ksys_ioctl+0x9b/0xc0 [ 761.447061] __x64_sys_ioctl+0x6f/0xb0 [ 761.450937] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 761.455507] do_syscall_64+0xf9/0x620 [ 761.459297] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 761.464472] RIP: 0033:0x7f03750e1089 [ 761.468175] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 761.487063] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 761.494846] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 761.502109] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 761.509364] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 761.516623] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 761.523879] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 executing program [ 761.531151] CPU: 0 PID: 9126 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 761.539118] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 761.544117] block nbd3: Could not allocate knbd recv work queue. [ 761.548461] Call Trace: [ 761.548482] dump_stack+0x1fc/0x2ef [ 761.548500] should_fail.cold+0xa/0xf [ 761.548518] ? setup_fault_attr+0x200/0x200 [ 761.558541] block nbd3: shutting down sockets [ 761.560839] ? lock_acquire+0x170/0x3c0 [ 761.560861] __should_failslab+0x115/0x180 executing program [ 761.560878] should_failslab+0x5/0x10 [ 761.560895] kmem_cache_alloc_trace+0x284/0x380 [ 761.588493] block nbd1: shutting down sockets [ 761.590100] ? wait_for_completion_io+0x10/0x10 [ 761.590118] ? kobj_ns_initial+0x90/0x90 [ 761.590135] call_usermodehelper_setup+0x84/0x300 [ 761.590155] kobject_uevent_env+0xe83/0x1480 [ 761.612523] ? nbd_size_update+0x28a/0x660 [ 761.616752] ? queue_work_on+0x11a/0x1f0 [ 761.620805] nbd_start_device+0x811/0xd60 [ 761.624938] nbd_ioctl+0x62c/0xbe0 [ 761.628461] ? _copy_from_user+0xd2/0x130 [ 761.632590] ? nbd_disconnect_and_put+0x190/0x190 [ 761.637421] ? __lock_acquire+0x6de/0x3ff0 [ 761.641640] ? nbd_disconnect_and_put+0x190/0x190 [ 761.646465] blkdev_ioctl+0x5cb/0x1a80 [ 761.650346] ? blkpg_ioctl+0x9d0/0x9d0 [ 761.654229] ? get_pid_task+0xf4/0x190 [ 761.658100] ? mark_held_locks+0xf0/0xf0 [ 761.662143] ? proc_fail_nth_write+0x95/0x1d0 [ 761.666619] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 761.671531] ? __fdget_pos+0x26f/0x310 [ 761.675405] block_ioctl+0xe9/0x130 [ 761.679011] ? blkdev_fallocate+0x3f0/0x3f0 [ 761.683311] do_vfs_ioctl+0xcdb/0x12e0 [ 761.687194] ? lock_downgrade+0x720/0x720 [ 761.691365] ? check_preemption_disabled+0x41/0x280 [ 761.696363] ? ioctl_preallocate+0x200/0x200 [ 761.700752] ? __fget+0x356/0x510 [ 761.704201] ? do_dup2+0x450/0x450 [ 761.707733] ? vfs_write+0x393/0x540 [ 761.711436] ? fput+0x2b/0x190 [ 761.714619] ksys_ioctl+0x9b/0xc0 [ 761.718055] __x64_sys_ioctl+0x6f/0xb0 [ 761.721929] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 761.726497] do_syscall_64+0xf9/0x620 [ 761.730287] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 761.735455] RIP: 0033:0x7f03750e1089 [ 761.739150] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 761.758037] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 761.765743] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 761.773002] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 executing program executing program [ 761.780251] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 761.787508] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 761.794844] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 761.803544] block nbd0: shutting down sockets [ 761.822491] block nbd4: Device being setup by another task executing program [ 761.829647] block nbd4: Could not allocate knbd recv work queue. [ 761.837641] block nbd4: shutting down sockets [ 761.852112] block nbd2: Device being setup by another task [ 761.853536] block nbd5: Device being setup by another task [ 761.858623] FAULT_INJECTION: forcing a failure. [ 761.858623] name failslab, interval 1, probability 0, space 0, times 0 [ 761.863547] block nbd3: Device being setup by another task [ 761.870146] block nbd5: Could not allocate knbd recv work queue. [ 761.882907] CPU: 1 PID: 9157 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 761.891847] block nbd5: shutting down sockets [ 761.894440] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 761.894445] Call Trace: [ 761.894464] dump_stack+0x1fc/0x2ef [ 761.894483] should_fail.cold+0xa/0xf [ 761.894501] ? setup_fault_attr+0x200/0x200 [ 761.894516] ? lock_acquire+0x170/0x3c0 [ 761.894535] __should_failslab+0x115/0x180 [ 761.894549] should_failslab+0x5/0x10 [ 761.894565] kmem_cache_alloc_trace+0x284/0x380 [ 761.912967] FAULT_INJECTION: forcing a failure. [ 761.912967] name failslab, interval 1, probability 0, space 0, times 0 [ 761.914557] ? wait_for_completion_io+0x10/0x10 [ 761.914574] ? kobj_ns_initial+0x90/0x90 [ 761.914589] call_usermodehelper_setup+0x84/0x300 [ 761.914610] kobject_uevent_env+0xe83/0x1480 [ 761.968425] ? nbd_size_update+0x28a/0x660 [ 761.972661] ? queue_work_on+0x11a/0x1f0 [ 761.976714] nbd_start_device+0x811/0xd60 [ 761.980863] nbd_ioctl+0x62c/0xbe0 [ 761.984402] ? _copy_from_user+0xd2/0x130 [ 761.988541] ? nbd_disconnect_and_put+0x190/0x190 [ 761.993382] ? __lock_acquire+0x6de/0x3ff0 [ 761.997614] ? nbd_disconnect_and_put+0x190/0x190 [ 762.002453] blkdev_ioctl+0x5cb/0x1a80 [ 762.006339] ? blkpg_ioctl+0x9d0/0x9d0 [ 762.010218] ? get_pid_task+0xf4/0x190 [ 762.014188] ? mark_held_locks+0xf0/0xf0 [ 762.018240] ? proc_fail_nth_write+0x95/0x1d0 [ 762.022724] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 762.027643] ? __fdget_pos+0x26f/0x310 [ 762.031529] block_ioctl+0xe9/0x130 [ 762.035149] ? blkdev_fallocate+0x3f0/0x3f0 [ 762.039464] do_vfs_ioctl+0xcdb/0x12e0 [ 762.043355] ? lock_downgrade+0x720/0x720 [ 762.047492] ? check_preemption_disabled+0x41/0x280 [ 762.052498] ? ioctl_preallocate+0x200/0x200 [ 762.056898] ? __fget+0x356/0x510 [ 762.060341] ? do_dup2+0x450/0x450 [ 762.063869] ? vfs_write+0x393/0x540 [ 762.067575] ? fput+0x2b/0x190 [ 762.070762] ksys_ioctl+0x9b/0xc0 [ 762.074207] __x64_sys_ioctl+0x6f/0xb0 [ 762.078091] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 762.082661] do_syscall_64+0xf9/0x620 [ 762.086460] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 762.091636] RIP: 0033:0x7f03750e1089 [ 762.095339] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 762.114226] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 762.121931] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 762.129194] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 762.136457] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 762.143713] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 762.150975] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 762.158252] CPU: 0 PID: 9158 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 762.166140] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 762.175491] Call Trace: [ 762.178085] dump_stack+0x1fc/0x2ef executing program [ 762.180887] block nbd0: Could not allocate knbd recv work queue. [ 762.181732] should_fail.cold+0xa/0xf [ 762.181751] ? setup_fault_attr+0x200/0x200 [ 762.181767] ? lock_acquire+0x170/0x3c0 [ 762.188551] block nbd2: shutting down sockets [ 762.191680] __should_failslab+0x115/0x180 [ 762.197414] block nbd0: shutting down sockets [ 762.199934] should_failslab+0x5/0x10 [ 762.199948] kmem_cache_alloc+0x277/0x370 [ 762.199962] skb_clone+0x151/0x3d0 [ 762.224549] netlink_broadcast_filtered+0x8e5/0xbc0 [ 762.229558] netlink_broadcast+0x35/0x40 [ 762.233606] kobject_uevent_env+0xa56/0x1480 [ 762.238001] ? nbd_size_update+0x28a/0x660 [ 762.242218] ? queue_work_on+0x11a/0x1f0 [ 762.246305] nbd_start_device+0x811/0xd60 [ 762.250475] nbd_ioctl+0x62c/0xbe0 [ 762.254002] ? _copy_from_user+0xd2/0x130 [ 762.258133] ? nbd_disconnect_and_put+0x190/0x190 [ 762.262974] ? __lock_acquire+0x6de/0x3ff0 [ 762.267286] ? nbd_disconnect_and_put+0x190/0x190 [ 762.272111] blkdev_ioctl+0x5cb/0x1a80 [ 762.276067] ? blkpg_ioctl+0x9d0/0x9d0 [ 762.279946] ? get_pid_task+0xf4/0x190 [ 762.283815] ? mark_held_locks+0xf0/0xf0 [ 762.287857] ? proc_fail_nth_write+0x95/0x1d0 [ 762.292334] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 762.297244] ? __fdget_pos+0x26f/0x310 [ 762.301117] block_ioctl+0xe9/0x130 [ 762.304723] ? blkdev_fallocate+0x3f0/0x3f0 [ 762.309027] do_vfs_ioctl+0xcdb/0x12e0 [ 762.312902] ? lock_downgrade+0x720/0x720 [ 762.317130] ? check_preemption_disabled+0x41/0x280 [ 762.322130] ? ioctl_preallocate+0x200/0x200 [ 762.326532] ? __fget+0x356/0x510 [ 762.329983] ? do_dup2+0x450/0x450 [ 762.333519] ? vfs_write+0x393/0x540 [ 762.337213] ? fput+0x2b/0x190 [ 762.340389] ksys_ioctl+0x9b/0xc0 [ 762.343826] __x64_sys_ioctl+0x6f/0xb0 [ 762.347693] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 762.352259] do_syscall_64+0xf9/0x620 [ 762.356055] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 762.361227] RIP: 0033:0x7f03750e1089 [ 762.364921] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 executing program executing program [ 762.383804] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 762.391490] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 762.398752] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 762.406002] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 762.413259] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 762.420508] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 762.433788] FAULT_INJECTION: forcing a failure. [ 762.433788] name failslab, interval 1, probability 0, space 0, times 0 [ 762.435367] block nbd1: shutting down sockets [ 762.452231] CPU: 0 PID: 9156 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 762.460119] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 762.469462] Call Trace: [ 762.472034] dump_stack+0x1fc/0x2ef [ 762.475650] should_fail.cold+0xa/0xf [ 762.479435] ? setup_fault_attr+0x200/0x200 [ 762.483739] ? lock_acquire+0x170/0x3c0 [ 762.487696] __should_failslab+0x115/0x180 [ 762.491912] should_failslab+0x5/0x10 [ 762.495697] __kmalloc_track_caller+0x2a6/0x3c0 [ 762.500345] ? kstrdup_const+0x53/0x80 [ 762.504212] kstrdup+0x36/0x70 [ 762.507390] kstrdup_const+0x53/0x80 [ 762.511092] __kernfs_new_node+0x9b/0x680 [ 762.515226] ? kfree+0xcc/0x210 [ 762.518500] ? kobject_add+0x10d/0x1c0 [ 762.522368] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 762.527111] ? nbd_start_device+0x1f2/0xd60 [ 762.531408] ? nbd_ioctl+0x62c/0xbe0 [ 762.535104] ? blkdev_ioctl+0x5cb/0x1a80 [ 762.539144] ? do_vfs_ioctl+0xcdb/0x12e0 [ 762.543187] ? __x64_sys_ioctl+0x6f/0xb0 [ 762.547228] ? do_syscall_64+0xf9/0x620 [ 762.551182] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 762.556525] ? debug_check_no_obj_freed+0x201/0x490 [ 762.561526] kernfs_create_dir_ns+0x9e/0x230 [ 762.565930] sysfs_create_dir_ns+0x127/0x280 [ 762.570430] ? sysfs_create_mount_point+0xb0/0xb0 [ 762.575265] ? mark_held_locks+0xa6/0xf0 [ 762.579304] ? kfree+0x110/0x210 [ 762.582653] ? kfree_const+0x51/0x60 [ 762.586348] kobject_add_internal+0x2a5/0x9c0 [ 762.590827] kobject_add+0x150/0x1c0 [ 762.594527] ? kset_create_and_add+0x1a0/0x1a0 [ 762.599093] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 762.603744] ? lock_downgrade+0x720/0x720 [ 762.607879] ? kernfs_put.part.0+0x225/0x590 [ 762.612282] blk_mq_register_hctx+0x23c/0x2c0 [ 762.616768] blk_mq_sysfs_register+0x143/0x1c0 [ 762.621339] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 762.626334] ? workqueue_sysfs_register+0x391/0x3e0 [ 762.631332] ? blk_mq_init_queue+0xa0/0xa0 [ 762.635554] nbd_start_device+0x1f2/0xd60 [ 762.639683] ? security_capable+0x8f/0xc0 [ 762.643815] nbd_ioctl+0x62c/0xbe0 [ 762.647335] ? _copy_from_user+0xd2/0x130 [ 762.651463] ? nbd_disconnect_and_put+0x190/0x190 [ 762.656294] ? __lock_acquire+0x6de/0x3ff0 [ 762.660519] ? nbd_disconnect_and_put+0x190/0x190 [ 762.665349] blkdev_ioctl+0x5cb/0x1a80 [ 762.669224] ? blkpg_ioctl+0x9d0/0x9d0 [ 762.673094] ? get_pid_task+0xf4/0x190 [ 762.676976] ? mark_held_locks+0xf0/0xf0 [ 762.681032] ? proc_fail_nth_write+0x95/0x1d0 [ 762.685521] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 762.690432] ? __fdget_pos+0x26f/0x310 [ 762.694315] block_ioctl+0xe9/0x130 [ 762.697919] ? blkdev_fallocate+0x3f0/0x3f0 [ 762.702223] do_vfs_ioctl+0xcdb/0x12e0 [ 762.706093] ? lock_downgrade+0x720/0x720 [ 762.710227] ? check_preemption_disabled+0x41/0x280 [ 762.715227] ? ioctl_preallocate+0x200/0x200 [ 762.719620] ? __fget+0x356/0x510 [ 762.723053] ? do_dup2+0x450/0x450 [ 762.726586] ? vfs_write+0x393/0x540 [ 762.730281] ? fput+0x2b/0x190 [ 762.733457] ksys_ioctl+0x9b/0xc0 [ 762.736892] __x64_sys_ioctl+0x6f/0xb0 [ 762.740760] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 762.745324] do_syscall_64+0xf9/0x620 [ 762.749113] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 762.754286] RIP: 0033:0x7f03750e1089 [ 762.757977] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 762.776860] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 executing program [ 762.784551] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 762.791801] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 762.799056] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 762.806309] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 762.813565] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 762.822169] kobject_add_internal failed for cpu1 (error: -12 parent: 0) executing program executing program executing program [ 762.837683] block nbd3: shutting down sockets [ 762.843005] block nbd4: Could not allocate knbd recv work queue. [ 762.851490] block nbd4: shutting down sockets [ 762.852978] block nbd5: Device being setup by another task [ 762.857664] block nbd5: Could not allocate knbd recv work queue. [ 762.874932] block nbd5: shutting down sockets executing program [ 762.912278] block nbd2: Device being setup by another task [ 762.912730] block nbd0: Device being setup by another task [ 762.918237] block nbd2: Could not allocate knbd recv work queue. [ 762.930887] block nbd2: shutting down sockets [ 762.963801] FAULT_INJECTION: forcing a failure. [ 762.963801] name failslab, interval 1, probability 0, space 0, times 0 [ 762.964037] FAULT_INJECTION: forcing a failure. [ 762.964037] name failslab, interval 1, probability 0, space 0, times 0 [ 762.979443] CPU: 1 PID: 9192 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 762.988106] FAULT_INJECTION: forcing a failure. [ 762.988106] name failslab, interval 1, probability 0, space 0, times 0 [ 762.994124] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 762.994129] Call Trace: [ 762.994149] dump_stack+0x1fc/0x2ef [ 762.994166] should_fail.cold+0xa/0xf [ 762.994182] ? setup_fault_attr+0x200/0x200 [ 762.994197] ? lock_acquire+0x170/0x3c0 [ 762.994217] __should_failslab+0x115/0x180 [ 762.994233] should_failslab+0x5/0x10 [ 762.994247] kmem_cache_alloc_trace+0x284/0x380 [ 762.994259] ? wait_for_completion_io+0x10/0x10 [ 762.994273] ? kobj_ns_initial+0x90/0x90 [ 762.994288] call_usermodehelper_setup+0x84/0x300 [ 762.994306] kobject_uevent_env+0xe83/0x1480 [ 762.994325] ? nbd_size_update+0x28a/0x660 [ 762.994343] ? queue_work_on+0x11a/0x1f0 [ 763.071860] nbd_start_device+0x811/0xd60 [ 763.076011] nbd_ioctl+0x62c/0xbe0 [ 763.079553] ? _copy_from_user+0xd2/0x130 [ 763.083690] ? nbd_disconnect_and_put+0x190/0x190 [ 763.088527] ? __lock_acquire+0x6de/0x3ff0 [ 763.092752] ? nbd_disconnect_and_put+0x190/0x190 [ 763.097584] blkdev_ioctl+0x5cb/0x1a80 [ 763.101462] ? blkpg_ioctl+0x9d0/0x9d0 [ 763.105337] ? get_pid_task+0xf4/0x190 [ 763.109215] ? mark_held_locks+0xf0/0xf0 [ 763.113266] ? proc_fail_nth_write+0x95/0x1d0 [ 763.117750] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 763.122690] ? __fdget_pos+0x26f/0x310 [ 763.126578] block_ioctl+0xe9/0x130 [ 763.130192] ? blkdev_fallocate+0x3f0/0x3f0 [ 763.134505] do_vfs_ioctl+0xcdb/0x12e0 [ 763.138391] ? lock_downgrade+0x720/0x720 [ 763.143498] ? check_preemption_disabled+0x41/0x280 [ 763.148522] ? ioctl_preallocate+0x200/0x200 [ 763.152933] ? __fget+0x356/0x510 [ 763.156382] ? do_dup2+0x450/0x450 [ 763.159911] ? vfs_write+0x393/0x540 [ 763.163625] ? fput+0x2b/0x190 [ 763.166838] ksys_ioctl+0x9b/0xc0 [ 763.170299] __x64_sys_ioctl+0x6f/0xb0 [ 763.174186] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 763.178763] do_syscall_64+0xf9/0x620 [ 763.182570] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 763.187756] RIP: 0033:0x7f03750e1089 [ 763.191641] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 763.210536] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 763.218240] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 763.225500] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 763.232759] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 763.240018] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 763.247282] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 763.254561] CPU: 0 PID: 9185 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 763.262448] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 763.271798] Call Trace: [ 763.274389] dump_stack+0x1fc/0x2ef [ 763.278015] should_fail.cold+0xa/0xf [ 763.281815] ? setup_fault_attr+0x200/0x200 [ 763.286134] ? lock_acquire+0x170/0x3c0 [ 763.290111] __should_failslab+0x115/0x180 [ 763.294344] should_failslab+0x5/0x10 [ 763.298135] kmem_cache_alloc+0x277/0x370 [ 763.302274] skb_clone+0x151/0x3d0 [ 763.305808] netlink_broadcast_filtered+0x8e5/0xbc0 [ 763.310839] netlink_broadcast+0x35/0x40 [ 763.314907] kobject_uevent_env+0xa56/0x1480 [ 763.319320] ? nbd_size_update+0x28a/0x660 [ 763.323548] ? queue_work_on+0x11a/0x1f0 [ 763.327601] nbd_start_device+0x811/0xd60 [ 763.331746] nbd_ioctl+0x62c/0xbe0 [ 763.335297] ? _copy_from_user+0xd2/0x130 [ 763.339449] ? nbd_disconnect_and_put+0x190/0x190 [ 763.344294] ? __lock_acquire+0x6de/0x3ff0 [ 763.348525] ? nbd_disconnect_and_put+0x190/0x190 [ 763.353361] blkdev_ioctl+0x5cb/0x1a80 [ 763.357241] ? blkpg_ioctl+0x9d0/0x9d0 [ 763.361124] ? get_pid_task+0xf4/0x190 [ 763.365005] ? mark_held_locks+0xf0/0xf0 [ 763.369067] ? proc_fail_nth_write+0x95/0x1d0 [ 763.373563] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 763.378603] block_ioctl+0xe9/0x130 [ 763.382227] ? blkdev_fallocate+0x3f0/0x3f0 [ 763.386545] do_vfs_ioctl+0xcdb/0x12e0 [ 763.390427] ? lock_downgrade+0x720/0x720 [ 763.394569] ? check_preemption_disabled+0x41/0x280 [ 763.399588] ? ioctl_preallocate+0x200/0x200 [ 763.404003] ? __fget+0x356/0x510 [ 763.407453] ? do_dup2+0x450/0x450 [ 763.410987] ? vfs_write+0x393/0x540 [ 763.414700] ? fput+0x2b/0x190 [ 763.417887] ksys_ioctl+0x9b/0xc0 [ 763.421333] __x64_sys_ioctl+0x6f/0xb0 [ 763.425215] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 763.429786] do_syscall_64+0xf9/0x620 [ 763.433584] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 763.438762] RIP: 0033:0x7f03750e1089 [ 763.442470] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 763.461717] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 763.469414] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 763.476680] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 763.483942] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 763.491204] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 763.498461] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 763.505825] CPU: 1 PID: 9179 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 763.513748] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 763.523102] Call Trace: [ 763.525692] dump_stack+0x1fc/0x2ef [ 763.529325] should_fail.cold+0xa/0xf [ 763.531661] FAULT_INJECTION: forcing a failure. [ 763.531661] name failslab, interval 1, probability 0, space 0, times 0 [ 763.533126] ? setup_fault_attr+0x200/0x200 [ 763.533141] ? lock_acquire+0x170/0x3c0 [ 763.533159] __should_failslab+0x115/0x180 [ 763.533174] should_failslab+0x5/0x10 [ 763.533192] __kmalloc_track_caller+0x2a6/0x3c0 [ 763.547812] block nbd1: shutting down sockets [ 763.548667] ? kstrdup_const+0x53/0x80 [ 763.573637] kstrdup+0x36/0x70 [ 763.576843] kstrdup_const+0x53/0x80 [ 763.580572] __kernfs_new_node+0x9b/0x680 [ 763.584727] ? kfree+0xcc/0x210 [ 763.588006] ? kobject_add+0x10d/0x1c0 [ 763.591890] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 763.596642] ? nbd_start_device+0x1f2/0xd60 [ 763.600951] ? nbd_ioctl+0x62c/0xbe0 [ 763.604667] ? blkdev_ioctl+0x5cb/0x1a80 [ 763.608719] ? do_vfs_ioctl+0xcdb/0x12e0 [ 763.612769] ? __x64_sys_ioctl+0x6f/0xb0 [ 763.616819] ? do_syscall_64+0xf9/0x620 [ 763.620784] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 763.626141] ? debug_check_no_obj_freed+0x201/0x490 [ 763.631157] kernfs_create_dir_ns+0x9e/0x230 [ 763.635572] sysfs_create_dir_ns+0x127/0x280 [ 763.639975] ? sysfs_create_mount_point+0xb0/0xb0 [ 763.644815] ? mark_held_locks+0xa6/0xf0 [ 763.648866] ? kfree+0x110/0x210 [ 763.652223] ? kfree_const+0x51/0x60 [ 763.655933] kobject_add_internal+0x2a5/0x9c0 [ 763.660425] kobject_add+0x150/0x1c0 [ 763.664135] ? kset_create_and_add+0x1a0/0x1a0 [ 763.668704] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 763.673367] ? lock_downgrade+0x720/0x720 [ 763.677506] ? kernfs_put.part.0+0x225/0x590 [ 763.681913] blk_mq_register_hctx+0x23c/0x2c0 [ 763.682097] block nbd4: shutting down sockets [ 763.686402] blk_mq_sysfs_register+0x143/0x1c0 [ 763.695473] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 763.700490] ? workqueue_sysfs_register+0x391/0x3e0 [ 763.705543] ? blk_mq_init_queue+0xa0/0xa0 [ 763.709778] nbd_start_device+0x1f2/0xd60 [ 763.713922] ? security_capable+0x8f/0xc0 [ 763.718069] nbd_ioctl+0x62c/0xbe0 [ 763.721603] ? _copy_from_user+0xd2/0x130 [ 763.725741] ? nbd_disconnect_and_put+0x190/0x190 [ 763.730581] ? __lock_acquire+0x6de/0x3ff0 [ 763.734810] ? nbd_disconnect_and_put+0x190/0x190 [ 763.739643] blkdev_ioctl+0x5cb/0x1a80 [ 763.743519] ? blkpg_ioctl+0x9d0/0x9d0 [ 763.747395] ? get_pid_task+0xf4/0x190 [ 763.751271] ? mark_held_locks+0xf0/0xf0 [ 763.755320] ? proc_fail_nth_write+0x95/0x1d0 [ 763.759807] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 763.764735] ? __fdget_pos+0x26f/0x310 [ 763.768621] block_ioctl+0xe9/0x130 [ 763.772234] ? blkdev_fallocate+0x3f0/0x3f0 [ 763.776545] do_vfs_ioctl+0xcdb/0x12e0 [ 763.780424] ? lock_downgrade+0x720/0x720 [ 763.784566] ? check_preemption_disabled+0x41/0x280 [ 763.789572] ? ioctl_preallocate+0x200/0x200 [ 763.793972] ? __fget+0x356/0x510 [ 763.797416] ? do_dup2+0x450/0x450 [ 763.800949] ? vfs_write+0x393/0x540 [ 763.804652] ? fput+0x2b/0x190 [ 763.807841] ksys_ioctl+0x9b/0xc0 [ 763.811285] __x64_sys_ioctl+0x6f/0xb0 [ 763.815162] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 763.819733] do_syscall_64+0xf9/0x620 [ 763.823527] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 763.828703] RIP: 0033:0x7f03750e1089 [ 763.832410] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 763.851311] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 763.859007] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 executing program [ 763.866262] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 763.873524] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 763.880779] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 763.888035] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 763.895314] CPU: 0 PID: 9195 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 763.899972] kobject_add_internal failed for cpu1 (error: -12 parent: 0) executing program executing program [ 763.903196] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 763.903201] Call Trace: [ 763.903222] dump_stack+0x1fc/0x2ef [ 763.903241] should_fail.cold+0xa/0xf [ 763.903258] ? setup_fault_attr+0x200/0x200 [ 763.903272] ? lock_acquire+0x170/0x3c0 [ 763.903290] __should_failslab+0x115/0x180 [ 763.903307] should_failslab+0x5/0x10 [ 763.912671] block nbd0: shutting down sockets [ 763.919475] kmem_cache_alloc_trace+0x284/0x380 [ 763.919490] ? wait_for_completion_io+0x10/0x10 [ 763.919505] ? kobj_ns_initial+0x90/0x90 [ 763.919519] call_usermodehelper_setup+0x84/0x300 [ 763.919536] kobject_uevent_env+0xe83/0x1480 [ 763.972849] ? nbd_size_update+0x28a/0x660 [ 763.977071] ? queue_work_on+0x11a/0x1f0 [ 763.981128] nbd_start_device+0x811/0xd60 [ 763.985270] nbd_ioctl+0x62c/0xbe0 [ 763.988801] ? _copy_from_user+0xd2/0x130 [ 763.992941] ? nbd_disconnect_and_put+0x190/0x190 [ 763.997784] ? __lock_acquire+0x6de/0x3ff0 [ 764.002025] ? nbd_disconnect_and_put+0x190/0x190 [ 764.006865] blkdev_ioctl+0x5cb/0x1a80 [ 764.010753] ? blkpg_ioctl+0x9d0/0x9d0 [ 764.014646] ? get_pid_task+0xf4/0x190 [ 764.018536] ? mark_held_locks+0xf0/0xf0 [ 764.022589] ? proc_fail_nth_write+0x95/0x1d0 [ 764.027075] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 764.032139] ? __fdget_pos+0x26f/0x310 [ 764.036024] block_ioctl+0xe9/0x130 [ 764.039639] ? blkdev_fallocate+0x3f0/0x3f0 [ 764.043944] do_vfs_ioctl+0xcdb/0x12e0 [ 764.047826] ? lock_downgrade+0x720/0x720 [ 764.051974] ? check_preemption_disabled+0x41/0x280 [ 764.056981] ? ioctl_preallocate+0x200/0x200 [ 764.061374] ? __fget+0x356/0x510 [ 764.064813] ? do_dup2+0x450/0x450 [ 764.068337] ? vfs_write+0x393/0x540 [ 764.072049] ? fput+0x2b/0x190 [ 764.075330] ksys_ioctl+0x9b/0xc0 [ 764.078771] __x64_sys_ioctl+0x6f/0xb0 [ 764.082650] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 764.087214] do_syscall_64+0xf9/0x620 [ 764.091002] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 764.096181] RIP: 0033:0x7f03750e1089 [ 764.099881] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 764.118764] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 764.126457] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 764.133713] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 764.140979] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 764.148240] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 764.155499] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 executing program executing program [ 764.165814] block nbd5: shutting down sockets [ 764.182944] block nbd2: Could not allocate knbd recv work queue. [ 764.183744] FAULT_INJECTION: forcing a failure. [ 764.183744] name failslab, interval 1, probability 0, space 0, times 0 [ 764.190303] block nbd2: shutting down sockets [ 764.202113] CPU: 1 PID: 9193 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 764.212886] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 764.222236] Call Trace: [ 764.224843] dump_stack+0x1fc/0x2ef [ 764.228458] should_fail.cold+0xa/0xf [ 764.232246] ? setup_fault_attr+0x200/0x200 [ 764.236549] ? lock_acquire+0x170/0x3c0 [ 764.240509] __should_failslab+0x115/0x180 [ 764.244736] should_failslab+0x5/0x10 [ 764.248521] kmem_cache_alloc+0x277/0x370 [ 764.252654] __d_alloc+0x2b/0xa10 [ 764.256088] ? __bpf_address_lookup+0x330/0x330 [ 764.260865] ? check_preemption_disabled+0x41/0x280 [ 764.265865] d_alloc+0x4a/0x230 [ 764.269134] d_alloc_parallel+0xeb/0x19e0 [ 764.273287] ? mark_held_locks+0xf0/0xf0 [ 764.277345] ? __d_lookup_rcu+0x6b0/0x6b0 [ 764.281480] ? mark_held_locks+0xf0/0xf0 [ 764.285695] ? __lockdep_init_map+0x100/0x5a0 [ 764.290171] ? __lockdep_init_map+0x100/0x5a0 [ 764.294664] __lookup_slow+0x18d/0x4a0 [ 764.298542] ? check_preemption_disabled+0x41/0x280 [ 764.303554] ? follow_dotdot_rcu+0x1040/0x1040 [ 764.308136] ? __d_lookup+0x411/0x710 [ 764.311940] ? d_lookup+0x18e/0x250 [ 764.315564] lookup_one_len+0x163/0x190 [ 764.319537] ? try_lookup_one_len+0x180/0x180 [ 764.324039] start_creating+0xc9/0x220 [ 764.327920] __debugfs_create_file+0x5e/0x480 [ 764.332425] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 764.337599] ? kvm_clock_get_cycles+0x14/0x30 [ 764.342079] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 764.346908] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 764.351819] ? init_srcu_struct_fields+0xca6/0x1190 [ 764.356825] ? srcu_reschedule+0x120/0x120 [ 764.361044] ? __raw_spin_lock_init+0x28/0x100 [ 764.365610] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 764.370361] ? nbd_clear_que+0x160/0x160 [ 764.374423] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 764.379431] ? workqueue_sysfs_register+0x391/0x3e0 [ 764.384435] ? blk_mq_init_queue+0xa0/0xa0 [ 764.388661] ? apparmor_sb_mount+0x970/0x970 [ 764.393063] nbd_start_device+0x1f2/0xd60 [ 764.397283] ? security_capable+0x8f/0xc0 [ 764.401418] nbd_ioctl+0x62c/0xbe0 [ 764.405063] ? _copy_from_user+0xd2/0x130 [ 764.409194] ? nbd_disconnect_and_put+0x190/0x190 [ 764.414023] ? __lock_acquire+0x6de/0x3ff0 [ 764.418243] ? nbd_disconnect_and_put+0x190/0x190 [ 764.423076] blkdev_ioctl+0x5cb/0x1a80 [ 764.426957] ? blkpg_ioctl+0x9d0/0x9d0 [ 764.430826] ? get_pid_task+0xf4/0x190 [ 764.434698] ? mark_held_locks+0xf0/0xf0 [ 764.438741] ? proc_fail_nth_write+0x95/0x1d0 [ 764.443219] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 764.448141] ? __fdget_pos+0x26f/0x310 [ 764.452031] block_ioctl+0xe9/0x130 [ 764.455785] ? blkdev_fallocate+0x3f0/0x3f0 [ 764.460091] do_vfs_ioctl+0xcdb/0x12e0 [ 764.463965] ? lock_downgrade+0x720/0x720 [ 764.468106] ? check_preemption_disabled+0x41/0x280 [ 764.473106] ? ioctl_preallocate+0x200/0x200 [ 764.477510] ? __fget+0x356/0x510 [ 764.480949] ? do_dup2+0x450/0x450 [ 764.484472] ? vfs_write+0x393/0x540 [ 764.488169] ? fput+0x2b/0x190 [ 764.491352] ksys_ioctl+0x9b/0xc0 [ 764.494798] __x64_sys_ioctl+0x6f/0xb0 [ 764.498669] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 764.503280] do_syscall_64+0xf9/0x620 [ 764.507079] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 764.512256] RIP: 0033:0x7f03750e1089 [ 764.515951] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 764.534920] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 764.542610] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 764.549860] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 764.557108] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 executing program [ 764.564360] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 764.571615] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 764.589120] block nbd3: shutting down sockets [ 764.602029] block nbd1: Device being setup by another task [ 764.603000] block nbd5: Could not allocate knbd recv work queue. [ 764.607771] block nbd4: Device being setup by another task [ 764.619544] block nbd0: Device being setup by another task [ 764.621656] block nbd5: shutting down sockets [ 764.625975] block nbd1: Could not allocate knbd recv work queue. [ 764.632011] block nbd2: Device being setup by another task [ 764.642857] block nbd2: Could not allocate knbd recv work queue. [ 764.645088] FAULT_INJECTION: forcing a failure. [ 764.645088] name failslab, interval 1, probability 0, space 0, times 0 [ 764.650562] block nbd2: shutting down sockets executing program [ 764.660585] CPU: 1 PID: 9223 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 764.669553] block nbd1: shutting down sockets [ 764.672756] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 764.672761] Call Trace: [ 764.672779] dump_stack+0x1fc/0x2ef [ 764.672798] should_fail.cold+0xa/0xf [ 764.672814] ? setup_fault_attr+0x200/0x200 [ 764.672830] ? lock_acquire+0x170/0x3c0 [ 764.704880] __should_failslab+0x115/0x180 [ 764.709099] should_failslab+0x5/0x10 [ 764.712883] kmem_cache_alloc+0x277/0x370 [ 764.717011] skb_clone+0x151/0x3d0 [ 764.720544] netlink_broadcast_filtered+0x8e5/0xbc0 [ 764.725642] netlink_broadcast+0x35/0x40 [ 764.729688] kobject_uevent_env+0xa56/0x1480 [ 764.734083] ? nbd_size_update+0x28a/0x660 [ 764.738300] ? queue_work_on+0x11a/0x1f0 [ 764.742342] nbd_start_device+0x811/0xd60 [ 764.746482] nbd_ioctl+0x62c/0xbe0 [ 764.750006] ? _copy_from_user+0xd2/0x130 [ 764.754144] ? nbd_disconnect_and_put+0x190/0x190 [ 764.758979] ? __lock_acquire+0x6de/0x3ff0 [ 764.763198] ? nbd_disconnect_and_put+0x190/0x190 [ 764.768023] blkdev_ioctl+0x5cb/0x1a80 [ 764.771896] ? blkpg_ioctl+0x9d0/0x9d0 [ 764.775768] ? get_pid_task+0xf4/0x190 [ 764.779643] ? mark_held_locks+0xf0/0xf0 [ 764.783684] ? proc_fail_nth_write+0x95/0x1d0 [ 764.788163] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 764.793071] ? __fdget_pos+0x26f/0x310 [ 764.796942] block_ioctl+0xe9/0x130 [ 764.800549] ? blkdev_fallocate+0x3f0/0x3f0 [ 764.804858] do_vfs_ioctl+0xcdb/0x12e0 [ 764.808741] ? lock_downgrade+0x720/0x720 [ 764.812871] ? check_preemption_disabled+0x41/0x280 [ 764.817870] ? ioctl_preallocate+0x200/0x200 [ 764.822260] ? __fget+0x356/0x510 [ 764.825696] ? do_dup2+0x450/0x450 [ 764.829213] ? vfs_write+0x393/0x540 [ 764.832997] ? fput+0x2b/0x190 [ 764.836172] ksys_ioctl+0x9b/0xc0 [ 764.839608] __x64_sys_ioctl+0x6f/0xb0 [ 764.843478] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 764.848043] do_syscall_64+0xf9/0x620 [ 764.851838] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 764.857016] RIP: 0033:0x7f03750e1089 [ 764.860712] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 764.879593] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 764.887282] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 764.894533] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 764.901783] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 764.909032] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec executing program executing program [ 764.916282] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 executing program [ 764.954130] block nbd0: shutting down sockets [ 764.955326] FAULT_INJECTION: forcing a failure. [ 764.955326] name failslab, interval 1, probability 0, space 0, times 0 [ 764.970620] FAULT_INJECTION: forcing a failure. [ 764.970620] name failslab, interval 1, probability 0, space 0, times 0 [ 764.970625] block nbd2: Device being setup by another task [ 764.977391] CPU: 0 PID: 9222 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 764.995281] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 765.004628] Call Trace: [ 765.007213] dump_stack+0x1fc/0x2ef [ 765.010839] should_fail.cold+0xa/0xf [ 765.014652] ? setup_fault_attr+0x200/0x200 [ 765.018977] ? lock_acquire+0x170/0x3c0 [ 765.022946] __should_failslab+0x115/0x180 [ 765.027173] should_failslab+0x5/0x10 [ 765.030963] __kmalloc_track_caller+0x2a6/0x3c0 [ 765.035625] ? kstrdup_const+0x53/0x80 [ 765.039508] kstrdup+0x36/0x70 [ 765.042700] kstrdup_const+0x53/0x80 [ 765.046406] __kernfs_new_node+0x9b/0x680 [ 765.050543] ? kfree+0xcc/0x210 [ 765.053817] ? kobject_add+0x10d/0x1c0 [ 765.057694] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 765.062442] ? nbd_start_device+0x1f2/0xd60 [ 765.066754] ? nbd_ioctl+0x62c/0xbe0 [ 765.070458] ? blkdev_ioctl+0x5cb/0x1a80 [ 765.074511] ? do_vfs_ioctl+0xcdb/0x12e0 [ 765.078566] ? __x64_sys_ioctl+0x6f/0xb0 [ 765.082623] ? do_syscall_64+0xf9/0x620 [ 765.086590] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 765.091945] ? debug_check_no_obj_freed+0x201/0x490 [ 765.096964] kernfs_create_dir_ns+0x9e/0x230 [ 765.101366] sysfs_create_dir_ns+0x127/0x280 [ 765.105765] ? sysfs_create_mount_point+0xb0/0xb0 [ 765.110603] ? mark_held_locks+0xa6/0xf0 [ 765.114655] ? kfree+0x110/0x210 [ 765.118012] ? kfree_const+0x51/0x60 [ 765.121719] kobject_add_internal+0x2a5/0x9c0 [ 765.126215] kobject_add+0x150/0x1c0 [ 765.129942] ? kset_create_and_add+0x1a0/0x1a0 [ 765.134519] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 765.139182] ? lock_downgrade+0x720/0x720 [ 765.143324] ? kernfs_put.part.0+0x225/0x590 [ 765.147731] blk_mq_register_hctx+0x23c/0x2c0 [ 765.152220] blk_mq_sysfs_register+0x143/0x1c0 [ 765.156800] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 765.161816] ? workqueue_sysfs_register+0x391/0x3e0 [ 765.166831] ? blk_mq_init_queue+0xa0/0xa0 [ 765.171067] nbd_start_device+0x1f2/0xd60 [ 765.175211] ? security_capable+0x8f/0xc0 [ 765.179357] nbd_ioctl+0x62c/0xbe0 [ 765.182894] ? _copy_from_user+0xd2/0x130 [ 765.187037] ? nbd_disconnect_and_put+0x190/0x190 [ 765.191877] ? __lock_acquire+0x6de/0x3ff0 [ 765.196215] ? nbd_disconnect_and_put+0x190/0x190 [ 765.201057] blkdev_ioctl+0x5cb/0x1a80 [ 765.204945] ? blkpg_ioctl+0x9d0/0x9d0 [ 765.208835] ? get_pid_task+0xf4/0x190 [ 765.212717] ? mark_held_locks+0xf0/0xf0 [ 765.216779] ? proc_fail_nth_write+0x95/0x1d0 [ 765.221271] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 765.226204] ? __fdget_pos+0x26f/0x310 [ 765.230092] block_ioctl+0xe9/0x130 [ 765.233713] ? blkdev_fallocate+0x3f0/0x3f0 [ 765.238025] do_vfs_ioctl+0xcdb/0x12e0 [ 765.241907] ? lock_downgrade+0x720/0x720 [ 765.246047] ? check_preemption_disabled+0x41/0x280 [ 765.251053] ? ioctl_preallocate+0x200/0x200 [ 765.255480] ? __fget+0x356/0x510 [ 765.258932] ? do_dup2+0x450/0x450 [ 765.262467] ? vfs_write+0x393/0x540 [ 765.266177] ? fput+0x2b/0x190 [ 765.269372] ksys_ioctl+0x9b/0xc0 [ 765.272907] __x64_sys_ioctl+0x6f/0xb0 [ 765.276785] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 765.281362] do_syscall_64+0xf9/0x620 [ 765.285158] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 765.290341] RIP: 0033:0x7f03750e1089 [ 765.294052] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 765.312949] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 765.320666] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 765.327925] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 765.335192] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 765.342465] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 765.349771] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 765.357054] CPU: 1 PID: 9247 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 765.364939] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 765.374297] Call Trace: [ 765.376910] dump_stack+0x1fc/0x2ef [ 765.380552] should_fail.cold+0xa/0xf [ 765.384406] ? setup_fault_attr+0x200/0x200 [ 765.388745] ? lock_acquire+0x170/0x3c0 [ 765.392738] __should_failslab+0x115/0x180 [ 765.392759] kobject_add_internal failed for cpu1 (error: -12 parent: 0) [ 765.396972] should_failslab+0x5/0x10 [ 765.396987] kmem_cache_alloc_node_trace+0x244/0x3b0 [ 765.397007] __kmalloc_node_track_caller+0x38/0x70 [ 765.417801] __alloc_skb+0xae/0x560 [ 765.421421] alloc_uevent_skb+0x7b/0x210 [ 765.425473] kobject_uevent_env+0xa90/0x1480 [ 765.429868] ? nbd_size_update+0x28a/0x660 [ 765.434102] ? queue_work_on+0x11a/0x1f0 [ 765.438158] nbd_start_device+0x811/0xd60 [ 765.442298] nbd_ioctl+0x62c/0xbe0 [ 765.445847] ? _copy_from_user+0xd2/0x130 [ 765.449984] ? nbd_disconnect_and_put+0x190/0x190 [ 765.454818] ? __lock_acquire+0x6de/0x3ff0 [ 765.459050] ? nbd_disconnect_and_put+0x190/0x190 [ 765.463996] blkdev_ioctl+0x5cb/0x1a80 [ 765.467878] ? blkpg_ioctl+0x9d0/0x9d0 [ 765.471755] ? get_pid_task+0xf4/0x190 [ 765.475636] ? mark_held_locks+0xf0/0xf0 [ 765.479685] ? proc_fail_nth_write+0x95/0x1d0 [ 765.484165] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 765.489079] ? __fdget_pos+0x26f/0x310 [ 765.492959] block_ioctl+0xe9/0x130 [ 765.496569] ? blkdev_fallocate+0x3f0/0x3f0 [ 765.500887] do_vfs_ioctl+0xcdb/0x12e0 [ 765.504772] ? lock_downgrade+0x720/0x720 [ 765.508909] ? check_preemption_disabled+0x41/0x280 [ 765.513914] ? ioctl_preallocate+0x200/0x200 [ 765.518316] ? __fget+0x356/0x510 [ 765.521757] ? do_dup2+0x450/0x450 [ 765.525285] ? vfs_write+0x393/0x540 [ 765.528991] ? fput+0x2b/0x190 [ 765.532175] ksys_ioctl+0x9b/0xc0 [ 765.535626] __x64_sys_ioctl+0x6f/0xb0 [ 765.539512] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 765.544087] do_syscall_64+0xf9/0x620 [ 765.547878] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 765.553052] RIP: 0033:0x7f03750e1089 [ 765.556759] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 765.575730] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 765.583427] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 765.590679] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 765.597934] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 765.605187] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 765.612448] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 765.620953] block nbd3: shutting down sockets [ 765.622491] block nbd2: shutting down sockets [ 765.630094] FAULT_INJECTION: forcing a failure. [ 765.630094] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 765.642331] CPU: 0 PID: 9244 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 765.643079] block nbd1: shutting down sockets [ 765.650214] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 765.655334] block nbd5: Could not allocate knbd recv work queue. [ 765.664036] Call Trace: [ 765.664056] dump_stack+0x1fc/0x2ef [ 765.664073] should_fail.cold+0xa/0xf [ 765.664090] ? setup_fault_attr+0x200/0x200 [ 765.678532] block nbd5: shutting down sockets [ 765.680208] ? mark_held_locks+0xf0/0xf0 [ 765.680231] __alloc_pages_nodemask+0x239/0x2890 [ 765.680245] ? unmap_page_range+0xfd4/0x2c50 [ 765.680261] ? unmap_single_vma+0x198/0x300 executing program executing program executing program executing program [ 765.706587] ? __lock_acquire+0x6de/0x3ff0 [ 765.710843] ? gfp_pfmemalloc_allowed+0x150/0x150 [ 765.713768] block nbd4: shutting down sockets [ 765.715686] ? mark_held_locks+0xf0/0xf0 [ 765.715701] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 765.715723] ? zap_huge_pmd+0x712/0xf30 [ 765.715746] ? unmap_page_range+0x1616/0x2c50 [ 765.737822] ? check_preemption_disabled+0x41/0x280 [ 765.742852] alloc_pages_current+0x193/0x2a0 [ 765.747265] __get_free_pages+0x8/0x40 [ 765.751156] __tlb_remove_page_size+0x2a2/0x470 [ 765.755845] unmap_page_range+0x14e7/0x2c50 [ 765.760183] ? lock_downgrade+0x720/0x720 [ 765.764316] ? vm_normal_page_pmd+0x4c0/0x4c0 [ 765.768797] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 765.773888] unmap_single_vma+0x198/0x300 [ 765.778022] unmap_vmas+0xa9/0x180 [ 765.781548] exit_mmap+0x2b9/0x530 [ 765.785076] ? __ia32_sys_remap_file_pages+0x150/0x150 [ 765.790347] ? __khugepaged_exit+0x2a6/0x3e0 [ 765.794741] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 765.799754] ? kmem_cache_free+0x226/0x260 [ 765.803992] ? __khugepaged_exit+0x2c7/0x3e0 [ 765.808401] mmput+0x14e/0x4a0 [ 765.811709] do_exit+0xaec/0x2be0 [ 765.815161] ? mm_update_next_owner+0x650/0x650 [ 765.819816] ? get_signal+0x388/0x1f70 [ 765.823691] ? lock_downgrade+0x720/0x720 [ 765.827845] ? lock_acquire+0x170/0x3c0 [ 765.831816] do_group_exit+0x125/0x310 [ 765.835690] get_signal+0x3f2/0x1f70 [ 765.839391] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 765.844442] do_signal+0x8f/0x1670 [ 765.847985] ? block_ioctl+0xe9/0x130 [ 765.851789] ? blkdev_fallocate+0x3f0/0x3f0 [ 765.856113] ? do_vfs_ioctl+0x110/0x12e0 [ 765.860175] ? setup_sigcontext+0x820/0x820 [ 765.864495] ? ioctl_preallocate+0x200/0x200 [ 765.868901] ? __fget+0x356/0x510 [ 765.872356] ? do_dup2+0x450/0x450 [ 765.875889] ? vfs_write+0x393/0x540 [ 765.879591] ? fput+0x2b/0x190 [ 765.882771] ? exit_to_usermode_loop+0x36/0x2a0 [ 765.887429] exit_to_usermode_loop+0x204/0x2a0 [ 765.892007] do_syscall_64+0x538/0x620 [ 765.895899] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 765.901084] RIP: 0033:0x7f03750e1089 [ 765.904785] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 765.923692] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 765.931400] RAX: fffffffffffffe00 RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 765.938663] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 765.945920] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 executing program [ 765.953182] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 765.960435] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 executing program [ 766.002244] block nbd0: Device being setup by another task [ 766.008133] block nbd0: Could not allocate knbd recv work queue. [ 766.016271] block nbd0: shutting down sockets [ 766.023943] block nbd3: Device being setup by another task [ 766.029698] block nbd3: Could not allocate knbd recv work queue. [ 766.032646] block nbd1: Device being setup by another task [ 766.041218] block nbd3: shutting down sockets [ 766.041515] block nbd5: Device being setup by another task executing program [ 766.050517] block nbd4: Device being setup by another task [ 766.057644] block nbd1: Could not allocate knbd recv work queue. [ 766.063991] block nbd5: Could not allocate knbd recv work queue. [ 766.071002] block nbd5: shutting down sockets [ 766.082064] block nbd4: Could not allocate knbd recv work queue. [ 766.089455] block nbd4: shutting down sockets [ 766.094887] FAULT_INJECTION: forcing a failure. executing program [ 766.094887] name failslab, interval 1, probability 0, space 0, times 0 [ 766.097591] block nbd1: shutting down sockets [ 766.108783] CPU: 0 PID: 9282 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 766.118521] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 766.127861] Call Trace: [ 766.130435] dump_stack+0x1fc/0x2ef [ 766.134052] should_fail.cold+0xa/0xf [ 766.137837] ? setup_fault_attr+0x200/0x200 [ 766.142144] ? lock_acquire+0x170/0x3c0 [ 766.146106] __should_failslab+0x115/0x180 [ 766.150333] should_failslab+0x5/0x10 [ 766.154126] kmem_cache_alloc+0x277/0x370 [ 766.158260] __d_alloc+0x2b/0xa10 [ 766.161699] ? __bpf_address_lookup+0x330/0x330 [ 766.166379] ? check_preemption_disabled+0x41/0x280 [ 766.171397] d_alloc+0x4a/0x230 [ 766.174667] d_alloc_parallel+0xeb/0x19e0 [ 766.178806] ? mark_held_locks+0xf0/0xf0 [ 766.182854] ? __d_lookup_rcu+0x6b0/0x6b0 [ 766.186987] ? mark_held_locks+0xf0/0xf0 [ 766.191030] ? __lockdep_init_map+0x100/0x5a0 [ 766.195509] ? __lockdep_init_map+0x100/0x5a0 [ 766.199993] __lookup_slow+0x18d/0x4a0 [ 766.203868] ? check_preemption_disabled+0x41/0x280 [ 766.208869] ? follow_dotdot_rcu+0x1040/0x1040 [ 766.213436] ? __d_lookup+0x411/0x710 [ 766.217237] ? d_lookup+0x18e/0x250 [ 766.220869] lookup_one_len+0x163/0x190 [ 766.224831] ? try_lookup_one_len+0x180/0x180 [ 766.229314] start_creating+0xc9/0x220 [ 766.233186] __debugfs_create_file+0x5e/0x480 [ 766.237670] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 766.242841] ? kvm_clock_get_cycles+0x14/0x30 [ 766.247319] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 766.252149] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 766.257062] ? init_srcu_struct_fields+0xca6/0x1190 [ 766.262065] ? srcu_reschedule+0x120/0x120 [ 766.266289] ? __raw_spin_lock_init+0x28/0x100 [ 766.270860] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 766.275612] ? nbd_clear_que+0x160/0x160 [ 766.279675] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 766.284683] ? workqueue_sysfs_register+0x391/0x3e0 [ 766.289689] ? blk_mq_init_queue+0xa0/0xa0 [ 766.293913] ? apparmor_sb_mount+0x970/0x970 [ 766.298313] nbd_start_device+0x1f2/0xd60 [ 766.302451] ? security_capable+0x8f/0xc0 [ 766.306600] nbd_ioctl+0x62c/0xbe0 [ 766.310139] ? _copy_from_user+0xd2/0x130 [ 766.314280] ? nbd_disconnect_and_put+0x190/0x190 [ 766.319124] ? __lock_acquire+0x6de/0x3ff0 [ 766.323347] ? nbd_disconnect_and_put+0x190/0x190 [ 766.328174] blkdev_ioctl+0x5cb/0x1a80 [ 766.332051] ? blkpg_ioctl+0x9d0/0x9d0 [ 766.335924] ? get_pid_task+0xf4/0x190 [ 766.339801] ? mark_held_locks+0xf0/0xf0 [ 766.343850] ? proc_fail_nth_write+0x95/0x1d0 [ 766.348330] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 766.353247] ? __fdget_pos+0x26f/0x310 [ 766.357131] block_ioctl+0xe9/0x130 [ 766.360746] ? blkdev_fallocate+0x3f0/0x3f0 [ 766.365053] do_vfs_ioctl+0xcdb/0x12e0 [ 766.368928] ? lock_downgrade+0x720/0x720 [ 766.373063] ? check_preemption_disabled+0x41/0x280 [ 766.378062] ? ioctl_preallocate+0x200/0x200 [ 766.382467] ? __fget+0x356/0x510 [ 766.385906] ? do_dup2+0x450/0x450 [ 766.389433] ? vfs_write+0x393/0x540 [ 766.393129] ? fput+0x2b/0x190 [ 766.396314] ksys_ioctl+0x9b/0xc0 [ 766.399755] __x64_sys_ioctl+0x6f/0xb0 [ 766.403648] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 766.408215] do_syscall_64+0xf9/0x620 [ 766.412002] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 766.417174] RIP: 0033:0x7f03750e1089 [ 766.420870] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 766.439755] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 executing program executing program [ 766.447446] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 766.454697] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 766.461949] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 766.469200] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 766.476452] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 766.492583] block nbd0: Could not allocate knbd recv work queue. executing program [ 766.506159] block nbd0: shutting down sockets executing program executing program [ 766.532240] block nbd3: Device being setup by another task [ 766.537995] block nbd3: Could not allocate knbd recv work queue. [ 766.544604] block nbd5: Device being setup by another task [ 766.550422] block nbd5: Could not allocate knbd recv work queue. [ 766.554063] block nbd3: shutting down sockets [ 766.558884] block nbd5: shutting down sockets executing program [ 766.604479] block nbd2: shutting down sockets [ 766.614972] FAULT_INJECTION: forcing a failure. [ 766.614972] name failslab, interval 1, probability 0, space 0, times 0 [ 766.626460] CPU: 0 PID: 9306 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 766.627257] FAULT_INJECTION: forcing a failure. [ 766.627257] name failslab, interval 1, probability 0, space 0, times 0 [ 766.634338] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 766.634342] Call Trace: [ 766.634361] dump_stack+0x1fc/0x2ef [ 766.634380] should_fail.cold+0xa/0xf [ 766.634397] ? setup_fault_attr+0x200/0x200 [ 766.634411] ? lock_acquire+0x170/0x3c0 [ 766.634434] __should_failslab+0x115/0x180 [ 766.677380] should_failslab+0x5/0x10 [ 766.681187] kmem_cache_alloc+0x277/0x370 [ 766.685333] skb_clone+0x151/0x3d0 [ 766.688874] netlink_broadcast_filtered+0x8e5/0xbc0 [ 766.693896] netlink_broadcast+0x35/0x40 [ 766.697957] kobject_uevent_env+0xa56/0x1480 [ 766.702369] ? nbd_size_update+0x28a/0x660 [ 766.706598] ? queue_work_on+0x11a/0x1f0 [ 766.710654] nbd_start_device+0x811/0xd60 [ 766.714801] nbd_ioctl+0x62c/0xbe0 [ 766.718345] ? _copy_from_user+0xd2/0x130 [ 766.722489] ? nbd_disconnect_and_put+0x190/0x190 [ 766.727335] ? __lock_acquire+0x6de/0x3ff0 [ 766.731576] ? nbd_disconnect_and_put+0x190/0x190 [ 766.736419] blkdev_ioctl+0x5cb/0x1a80 [ 766.740302] ? blkpg_ioctl+0x9d0/0x9d0 [ 766.744187] ? get_pid_task+0xf4/0x190 [ 766.748075] ? mark_held_locks+0xf0/0xf0 [ 766.752129] ? proc_fail_nth_write+0x95/0x1d0 [ 766.756615] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 766.761537] ? __fdget_pos+0x26f/0x310 [ 766.765423] block_ioctl+0xe9/0x130 [ 766.769058] ? blkdev_fallocate+0x3f0/0x3f0 [ 766.773388] do_vfs_ioctl+0xcdb/0x12e0 [ 766.777273] ? lock_downgrade+0x720/0x720 [ 766.781418] ? check_preemption_disabled+0x41/0x280 [ 766.786428] ? ioctl_preallocate+0x200/0x200 [ 766.790838] ? __fget+0x356/0x510 [ 766.794290] ? do_dup2+0x450/0x450 [ 766.797823] ? vfs_write+0x393/0x540 [ 766.801530] ? fput+0x2b/0x190 [ 766.804734] ksys_ioctl+0x9b/0xc0 [ 766.808186] __x64_sys_ioctl+0x6f/0xb0 [ 766.812073] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 766.816647] do_syscall_64+0xf9/0x620 [ 766.820450] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 766.825639] RIP: 0033:0x7f03750e1089 [ 766.829350] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 766.848251] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 766.855948] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 766.863206] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 766.870472] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 766.877734] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 766.884999] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 766.892311] CPU: 1 PID: 9302 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 766.900198] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 766.909556] Call Trace: [ 766.912148] dump_stack+0x1fc/0x2ef [ 766.915431] block nbd1: shutting down sockets [ 766.915786] should_fail.cold+0xa/0xf [ 766.924071] ? setup_fault_attr+0x200/0x200 [ 766.928405] ? lock_acquire+0x170/0x3c0 [ 766.932392] __should_failslab+0x115/0x180 [ 766.936628] should_failslab+0x5/0x10 [ 766.940412] kmem_cache_alloc+0x277/0x370 [ 766.944551] __d_alloc+0x2b/0xa10 [ 766.947992] ? __bpf_address_lookup+0x330/0x330 [ 766.952655] ? check_preemption_disabled+0x41/0x280 [ 766.957664] d_alloc+0x4a/0x230 [ 766.960934] d_alloc_parallel+0xeb/0x19e0 [ 766.965072] ? mark_held_locks+0xf0/0xf0 [ 766.969119] ? __d_lookup_rcu+0x6b0/0x6b0 [ 766.973263] ? mark_held_locks+0xf0/0xf0 [ 766.977312] ? __lockdep_init_map+0x100/0x5a0 [ 766.981790] ? __lockdep_init_map+0x100/0x5a0 [ 766.986272] __lookup_slow+0x18d/0x4a0 [ 766.990145] ? check_preemption_disabled+0x41/0x280 [ 766.995148] ? follow_dotdot_rcu+0x1040/0x1040 [ 766.999725] ? __d_lookup+0x411/0x710 [ 767.003515] ? d_lookup+0x18e/0x250 [ 767.007131] lookup_one_len+0x163/0x190 [ 767.011091] ? try_lookup_one_len+0x180/0x180 [ 767.015576] start_creating+0xc9/0x220 [ 767.019451] __debugfs_create_file+0x5e/0x480 [ 767.023946] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 767.029122] ? kvm_clock_get_cycles+0x14/0x30 [ 767.033604] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 767.038436] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 767.043347] ? init_srcu_struct_fields+0xca6/0x1190 [ 767.048352] ? srcu_reschedule+0x120/0x120 [ 767.052573] ? __raw_spin_lock_init+0x28/0x100 [ 767.057143] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 767.061890] ? nbd_clear_que+0x160/0x160 [ 767.065939] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 767.070940] ? workqueue_sysfs_register+0x391/0x3e0 [ 767.075942] ? blk_mq_init_queue+0xa0/0xa0 [ 767.080164] ? apparmor_sb_mount+0x970/0x970 [ 767.084562] nbd_start_device+0x1f2/0xd60 [ 767.088697] ? security_capable+0x8f/0xc0 [ 767.092835] nbd_ioctl+0x62c/0xbe0 [ 767.096363] ? _copy_from_user+0xd2/0x130 [ 767.100495] ? nbd_disconnect_and_put+0x190/0x190 [ 767.105324] ? __lock_acquire+0x6de/0x3ff0 [ 767.109545] ? nbd_disconnect_and_put+0x190/0x190 [ 767.114381] blkdev_ioctl+0x5cb/0x1a80 [ 767.118270] ? blkpg_ioctl+0x9d0/0x9d0 [ 767.122154] ? get_pid_task+0xf4/0x190 [ 767.126030] ? mark_held_locks+0xf0/0xf0 [ 767.130086] ? proc_fail_nth_write+0x95/0x1d0 [ 767.134582] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 767.139502] ? __fdget_pos+0x26f/0x310 [ 767.143382] block_ioctl+0xe9/0x130 [ 767.146999] ? blkdev_fallocate+0x3f0/0x3f0 [ 767.151311] do_vfs_ioctl+0xcdb/0x12e0 [ 767.155191] ? lock_downgrade+0x720/0x720 [ 767.159334] ? check_preemption_disabled+0x41/0x280 [ 767.164339] ? ioctl_preallocate+0x200/0x200 [ 767.168733] ? __fget+0x356/0x510 [ 767.172177] ? do_dup2+0x450/0x450 [ 767.175701] ? vfs_write+0x393/0x540 [ 767.179399] ? fput+0x2b/0x190 [ 767.182578] ksys_ioctl+0x9b/0xc0 [ 767.186019] __x64_sys_ioctl+0x6f/0xb0 [ 767.189889] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 767.194453] do_syscall_64+0xf9/0x620 [ 767.198248] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 767.203420] RIP: 0033:0x7f03750e1089 [ 767.207116] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 767.225997] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 767.233713] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 767.240972] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 767.248227] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 767.255479] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 767.262729] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 767.278535] block nbd4: shutting down sockets [ 767.283524] block nbd5: Could not allocate knbd recv work queue. [ 767.283956] FAULT_INJECTION: forcing a failure. [ 767.283956] name failslab, interval 1, probability 0, space 0, times 0 [ 767.290890] block nbd5: shutting down sockets executing program executing program executing program [ 767.301285] block nbd3: Could not allocate knbd recv work queue. [ 767.323748] block nbd3: shutting down sockets [ 767.328468] CPU: 1 PID: 9308 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 767.336353] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 767.345706] Call Trace: [ 767.348300] dump_stack+0x1fc/0x2ef [ 767.351934] should_fail.cold+0xa/0xf [ 767.355729] ? setup_fault_attr+0x200/0x200 [ 767.360037] ? lock_acquire+0x170/0x3c0 [ 767.363998] __should_failslab+0x115/0x180 [ 767.368218] should_failslab+0x5/0x10 [ 767.372000] kmem_cache_alloc+0x277/0x370 [ 767.376133] __d_alloc+0x2b/0xa10 [ 767.379576] ? __bpf_address_lookup+0x330/0x330 [ 767.384231] ? check_preemption_disabled+0x41/0x280 [ 767.389238] d_alloc+0x4a/0x230 [ 767.392501] d_alloc_parallel+0xeb/0x19e0 [ 767.396640] ? mark_held_locks+0xf0/0xf0 [ 767.400698] ? __d_lookup_rcu+0x6b0/0x6b0 [ 767.404831] ? mark_held_locks+0xf0/0xf0 [ 767.408876] ? __lockdep_init_map+0x100/0x5a0 [ 767.413354] ? __lockdep_init_map+0x100/0x5a0 [ 767.417832] __lookup_slow+0x18d/0x4a0 [ 767.421717] ? check_preemption_disabled+0x41/0x280 [ 767.426724] ? follow_dotdot_rcu+0x1040/0x1040 [ 767.431294] ? __d_lookup+0x411/0x710 [ 767.435086] ? d_lookup+0x18e/0x250 [ 767.438708] lookup_one_len+0x163/0x190 [ 767.442820] ? try_lookup_one_len+0x180/0x180 [ 767.447312] start_creating+0xc9/0x220 [ 767.451201] __debugfs_create_file+0x5e/0x480 [ 767.455689] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 767.460868] ? kvm_clock_get_cycles+0x14/0x30 [ 767.465352] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 767.470183] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 767.475094] ? init_srcu_struct_fields+0xca6/0x1190 [ 767.480095] ? srcu_reschedule+0x120/0x120 [ 767.484407] ? __raw_spin_lock_init+0x28/0x100 [ 767.488975] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 767.493723] ? nbd_clear_que+0x160/0x160 [ 767.497776] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 767.502774] ? workqueue_sysfs_register+0x391/0x3e0 [ 767.507783] ? blk_mq_init_queue+0xa0/0xa0 [ 767.511999] ? apparmor_sb_mount+0x970/0x970 [ 767.516539] nbd_start_device+0x1f2/0xd60 [ 767.520688] ? security_capable+0x8f/0xc0 [ 767.524828] nbd_ioctl+0x62c/0xbe0 [ 767.528354] ? _copy_from_user+0xd2/0x130 [ 767.532489] ? nbd_disconnect_and_put+0x190/0x190 [ 767.537324] ? __lock_acquire+0x6de/0x3ff0 [ 767.541558] ? nbd_disconnect_and_put+0x190/0x190 [ 767.546388] blkdev_ioctl+0x5cb/0x1a80 [ 767.550256] ? blkpg_ioctl+0x9d0/0x9d0 [ 767.554135] ? get_pid_task+0xf4/0x190 [ 767.558008] ? mark_held_locks+0xf0/0xf0 [ 767.562052] ? proc_fail_nth_write+0x95/0x1d0 [ 767.566533] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 767.571450] ? __fdget_pos+0x26f/0x310 [ 767.575327] block_ioctl+0xe9/0x130 [ 767.578940] ? blkdev_fallocate+0x3f0/0x3f0 [ 767.583247] do_vfs_ioctl+0xcdb/0x12e0 [ 767.587123] ? lock_downgrade+0x720/0x720 [ 767.591256] ? check_preemption_disabled+0x41/0x280 [ 767.596255] ? ioctl_preallocate+0x200/0x200 [ 767.600658] ? __fget+0x356/0x510 [ 767.604098] ? do_dup2+0x450/0x450 [ 767.607622] ? vfs_write+0x393/0x540 [ 767.611320] ? fput+0x2b/0x190 [ 767.614504] ksys_ioctl+0x9b/0xc0 [ 767.617945] __x64_sys_ioctl+0x6f/0xb0 [ 767.621825] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 767.626388] do_syscall_64+0xf9/0x620 [ 767.630174] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 767.635344] RIP: 0033:0x7f03750e1089 [ 767.639085] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 767.657967] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 767.665743] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 767.672993] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 767.680254] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 767.687514] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 767.694770] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 executing program executing program executing program [ 767.705355] block nbd2: Device being setup by another task [ 767.714382] block nbd2: shutting down sockets [ 767.724226] block nbd0: shutting down sockets [ 767.750736] FAULT_INJECTION: forcing a failure. [ 767.750736] name failslab, interval 1, probability 0, space 0, times 0 [ 767.762121] CPU: 0 PID: 9332 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 767.770001] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 767.773530] FAULT_INJECTION: forcing a failure. [ 767.773530] name failslab, interval 1, probability 0, space 0, times 0 [ 767.779346] Call Trace: [ 767.779366] dump_stack+0x1fc/0x2ef [ 767.779386] should_fail.cold+0xa/0xf [ 767.779404] ? setup_fault_attr+0x200/0x200 [ 767.779424] ? lock_acquire+0x170/0x3c0 [ 767.808843] __should_failslab+0x115/0x180 [ 767.813077] should_failslab+0x5/0x10 [ 767.816870] kmem_cache_alloc_trace+0x284/0x380 [ 767.821563] ? wait_for_completion_io+0x10/0x10 [ 767.826234] ? kobj_ns_initial+0x90/0x90 [ 767.830383] call_usermodehelper_setup+0x84/0x300 [ 767.835224] kobject_uevent_env+0xe83/0x1480 [ 767.839629] ? nbd_size_update+0x28a/0x660 [ 767.843856] ? queue_work_on+0x11a/0x1f0 [ 767.847919] nbd_start_device+0x811/0xd60 [ 767.852069] nbd_ioctl+0x62c/0xbe0 [ 767.855613] ? _copy_from_user+0xd2/0x130 [ 767.859761] ? nbd_disconnect_and_put+0x190/0x190 [ 767.864609] ? __lock_acquire+0x6de/0x3ff0 [ 767.868840] ? nbd_disconnect_and_put+0x190/0x190 [ 767.873688] blkdev_ioctl+0x5cb/0x1a80 [ 767.877574] ? blkpg_ioctl+0x9d0/0x9d0 [ 767.881453] ? get_pid_task+0xf4/0x190 [ 767.885335] ? mark_held_locks+0xf0/0xf0 [ 767.889387] ? proc_fail_nth_write+0x95/0x1d0 [ 767.893880] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 767.898809] ? __fdget_pos+0x26f/0x310 [ 767.902701] block_ioctl+0xe9/0x130 [ 767.906325] ? blkdev_fallocate+0x3f0/0x3f0 [ 767.910642] do_vfs_ioctl+0xcdb/0x12e0 [ 767.914524] ? lock_downgrade+0x720/0x720 [ 767.918667] ? check_preemption_disabled+0x41/0x280 [ 767.923674] ? ioctl_preallocate+0x200/0x200 [ 767.928077] ? __fget+0x356/0x510 [ 767.931534] ? do_dup2+0x450/0x450 [ 767.932683] block nbd4: Could not allocate knbd recv work queue. [ 767.935070] ? vfs_write+0x393/0x540 [ 767.935086] ? fput+0x2b/0x190 [ 767.935105] ksys_ioctl+0x9b/0xc0 executing program [ 767.935120] __x64_sys_ioctl+0x6f/0xb0 [ 767.935136] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 767.942833] block nbd4: shutting down sockets [ 767.944966] do_syscall_64+0xf9/0x620 [ 767.944986] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 767.944998] RIP: 0033:0x7f03750e1089 [ 767.945010] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 767.945021] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 768.004461] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 768.011718] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 768.018978] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 768.026236] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 768.033494] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 768.040773] CPU: 1 PID: 9339 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 768.048660] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 768.058015] Call Trace: [ 768.060608] dump_stack+0x1fc/0x2ef [ 768.064248] should_fail.cold+0xa/0xf [ 768.068064] ? setup_fault_attr+0x200/0x200 [ 768.072393] ? lock_acquire+0x170/0x3c0 [ 768.076376] __should_failslab+0x115/0x180 [ 768.080628] should_failslab+0x5/0x10 [ 768.082505] FAULT_INJECTION: forcing a failure. [ 768.082505] name failslab, interval 1, probability 0, space 0, times 0 [ 768.084431] kmem_cache_alloc_trace+0x284/0x380 [ 768.084443] ? wait_for_completion_io+0x10/0x10 [ 768.084463] ? kobj_ns_initial+0x90/0x90 [ 768.108972] call_usermodehelper_setup+0x84/0x300 [ 768.113825] kobject_uevent_env+0xe83/0x1480 [ 768.118245] ? nbd_size_update+0x28a/0x660 [ 768.122483] ? queue_work_on+0x11a/0x1f0 [ 768.126553] nbd_start_device+0x811/0xd60 [ 768.130706] nbd_ioctl+0x62c/0xbe0 [ 768.134261] ? _copy_from_user+0xd2/0x130 [ 768.138415] ? nbd_disconnect_and_put+0x190/0x190 [ 768.143260] ? __lock_acquire+0x6de/0x3ff0 [ 768.147488] ? nbd_disconnect_and_put+0x190/0x190 [ 768.152323] blkdev_ioctl+0x5cb/0x1a80 [ 768.156203] ? blkpg_ioctl+0x9d0/0x9d0 [ 768.160085] ? get_pid_task+0xf4/0x190 [ 768.163975] ? mark_held_locks+0xf0/0xf0 [ 768.168030] ? proc_fail_nth_write+0x95/0x1d0 [ 768.172519] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 768.177441] ? __fdget_pos+0x26f/0x310 [ 768.181330] block_ioctl+0xe9/0x130 [ 768.184945] ? blkdev_fallocate+0x3f0/0x3f0 [ 768.186666] block nbd5: shutting down sockets [ 768.189259] do_vfs_ioctl+0xcdb/0x12e0 [ 768.189275] ? lock_downgrade+0x720/0x720 [ 768.189292] ? check_preemption_disabled+0x41/0x280 [ 768.206782] ? ioctl_preallocate+0x200/0x200 [ 768.211197] ? __fget+0x356/0x510 [ 768.214652] ? do_dup2+0x450/0x450 [ 768.218185] ? vfs_write+0x393/0x540 [ 768.221889] ? fput+0x2b/0x190 [ 768.225082] ksys_ioctl+0x9b/0xc0 [ 768.228530] __x64_sys_ioctl+0x6f/0xb0 [ 768.232406] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 768.236979] do_syscall_64+0xf9/0x620 [ 768.240778] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 768.245955] RIP: 0033:0x7f03750e1089 [ 768.249657] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 768.268547] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 768.276245] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 768.283500] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 768.290759] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 executing program [ 768.298018] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 768.305282] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 768.312568] CPU: 0 PID: 9357 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 768.315516] block nbd1: shutting down sockets [ 768.320450] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 768.320455] Call Trace: [ 768.320475] dump_stack+0x1fc/0x2ef [ 768.320494] should_fail.cold+0xa/0xf [ 768.320509] ? setup_fault_attr+0x200/0x200 [ 768.320525] ? lock_acquire+0x170/0x3c0 executing program [ 768.352764] __should_failslab+0x115/0x180 [ 768.356986] should_failslab+0x5/0x10 [ 768.360770] kmem_cache_alloc_trace+0x284/0x380 [ 768.365437] ? wait_for_completion_io+0x10/0x10 [ 768.370113] ? kobj_ns_initial+0x90/0x90 [ 768.374182] call_usermodehelper_setup+0x84/0x300 [ 768.379036] kobject_uevent_env+0xe83/0x1480 [ 768.383458] ? nbd_size_update+0x28a/0x660 [ 768.387686] ? queue_work_on+0x11a/0x1f0 [ 768.391738] nbd_start_device+0x811/0xd60 [ 768.395875] nbd_ioctl+0x62c/0xbe0 [ 768.399399] ? _copy_from_user+0xd2/0x130 [ 768.403545] ? nbd_disconnect_and_put+0x190/0x190 [ 768.408385] ? __lock_acquire+0x6de/0x3ff0 [ 768.412616] ? nbd_disconnect_and_put+0x190/0x190 [ 768.417451] blkdev_ioctl+0x5cb/0x1a80 [ 768.421329] ? blkpg_ioctl+0x9d0/0x9d0 [ 768.425212] ? get_pid_task+0xf4/0x190 [ 768.429118] ? mark_held_locks+0xf0/0xf0 [ 768.433175] ? proc_fail_nth_write+0x95/0x1d0 [ 768.437655] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 768.442573] ? __fdget_pos+0x26f/0x310 [ 768.446457] block_ioctl+0xe9/0x130 [ 768.450067] ? blkdev_fallocate+0x3f0/0x3f0 [ 768.454377] do_vfs_ioctl+0xcdb/0x12e0 [ 768.458257] ? lock_downgrade+0x720/0x720 [ 768.462398] ? check_preemption_disabled+0x41/0x280 [ 768.467407] ? ioctl_preallocate+0x200/0x200 [ 768.471885] ? __fget+0x356/0x510 [ 768.475322] ? do_dup2+0x450/0x450 [ 768.478843] ? vfs_write+0x393/0x540 [ 768.482539] ? fput+0x2b/0x190 [ 768.485725] ksys_ioctl+0x9b/0xc0 [ 768.489161] __x64_sys_ioctl+0x6f/0xb0 [ 768.493031] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 768.497594] do_syscall_64+0xf9/0x620 [ 768.501384] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 768.506567] RIP: 0033:0x7f03750e1089 [ 768.510277] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 768.529171] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 768.536861] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 768.544112] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 executing program [ 768.551363] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 768.558612] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 768.565869] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 768.574097] block nbd3: shutting down sockets [ 768.592027] block nbd0: Device being setup by another task [ 768.592466] block nbd2: Could not allocate knbd recv work queue. executing program [ 768.600664] block nbd0: Could not allocate knbd recv work queue. [ 768.605691] block nbd2: shutting down sockets [ 768.613005] block nbd0: shutting down sockets [ 768.614795] block nbd4: Device being setup by another task [ 768.624862] block nbd5: Device being setup by another task [ 768.630685] block nbd5: Could not allocate knbd recv work queue. [ 768.638884] block nbd4: Could not allocate knbd recv work queue. [ 768.640951] block nbd5: shutting down sockets [ 768.646568] block nbd4: shutting down sockets executing program executing program executing program [ 768.654352] block nbd1: Device being setup by another task [ 768.672708] FAULT_INJECTION: forcing a failure. [ 768.672708] name failslab, interval 1, probability 0, space 0, times 0 [ 768.684507] CPU: 0 PID: 9371 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 768.692378] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 768.701719] Call Trace: [ 768.704304] dump_stack+0x1fc/0x2ef [ 768.707921] should_fail.cold+0xa/0xf [ 768.711708] ? setup_fault_attr+0x200/0x200 [ 768.716012] ? lock_acquire+0x170/0x3c0 [ 768.719982] __should_failslab+0x115/0x180 [ 768.724222] should_failslab+0x5/0x10 [ 768.728103] kmem_cache_alloc+0x277/0x370 [ 768.732238] skb_clone+0x151/0x3d0 [ 768.735764] netlink_broadcast_filtered+0x8e5/0xbc0 [ 768.740778] netlink_broadcast+0x35/0x40 [ 768.745439] kobject_uevent_env+0xa56/0x1480 [ 768.749838] ? nbd_size_update+0x28a/0x660 [ 768.754063] ? queue_work_on+0x11a/0x1f0 [ 768.758110] nbd_start_device+0x811/0xd60 [ 768.762252] nbd_ioctl+0x62c/0xbe0 [ 768.765789] ? _copy_from_user+0xd2/0x130 [ 768.769927] ? nbd_disconnect_and_put+0x190/0x190 [ 768.774758] ? __lock_acquire+0x6de/0x3ff0 [ 768.778986] ? nbd_disconnect_and_put+0x190/0x190 [ 768.783820] blkdev_ioctl+0x5cb/0x1a80 [ 768.787691] ? blkpg_ioctl+0x9d0/0x9d0 [ 768.791570] ? get_pid_task+0xf4/0x190 [ 768.795450] ? mark_held_locks+0xf0/0xf0 [ 768.799502] ? proc_fail_nth_write+0x95/0x1d0 [ 768.803979] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 768.808900] ? __fdget_pos+0x26f/0x310 [ 768.812796] block_ioctl+0xe9/0x130 [ 768.816402] ? blkdev_fallocate+0x3f0/0x3f0 [ 768.820704] do_vfs_ioctl+0xcdb/0x12e0 [ 768.824574] ? lock_downgrade+0x720/0x720 [ 768.828707] ? check_preemption_disabled+0x41/0x280 [ 768.833716] ? ioctl_preallocate+0x200/0x200 [ 768.838112] ? __fget+0x356/0x510 [ 768.841553] ? do_dup2+0x450/0x450 [ 768.845075] ? vfs_write+0x393/0x540 [ 768.848781] ? fput+0x2b/0x190 [ 768.851968] ksys_ioctl+0x9b/0xc0 [ 768.855415] __x64_sys_ioctl+0x6f/0xb0 [ 768.859298] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 768.863863] do_syscall_64+0xf9/0x620 [ 768.867663] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 768.872846] RIP: 0033:0x7f03750e1089 [ 768.876555] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 768.895447] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 768.903144] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 768.910403] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 768.917654] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 768.924904] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 768.932158] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 768.942252] FAULT_INJECTION: forcing a failure. [ 768.942252] name failslab, interval 1, probability 0, space 0, times 0 [ 768.953867] CPU: 1 PID: 9369 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 768.957409] FAULT_INJECTION: forcing a failure. [ 768.957409] name failslab, interval 1, probability 0, space 0, times 0 [ 768.961745] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 768.961751] Call Trace: [ 768.961770] dump_stack+0x1fc/0x2ef [ 768.961788] should_fail.cold+0xa/0xf [ 768.961805] ? setup_fault_attr+0x200/0x200 [ 768.961819] ? lock_acquire+0x170/0x3c0 [ 768.961838] __should_failslab+0x115/0x180 [ 768.961858] should_failslab+0x5/0x10 [ 769.008585] __kmalloc_track_caller+0x2a6/0x3c0 [ 769.013251] ? kstrdup_const+0x53/0x80 [ 769.017140] kstrdup+0x36/0x70 [ 769.020336] kstrdup_const+0x53/0x80 [ 769.024055] __kernfs_new_node+0x9b/0x680 [ 769.028204] ? kfree+0xcc/0x210 [ 769.029546] FAULT_INJECTION: forcing a failure. [ 769.029546] name failslab, interval 1, probability 0, space 0, times 0 [ 769.031480] ? kobject_add+0x10d/0x1c0 [ 769.031496] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 769.031518] ? nbd_start_device+0x1f2/0xd60 [ 769.055594] ? nbd_ioctl+0x62c/0xbe0 [ 769.059308] ? blkdev_ioctl+0x5cb/0x1a80 [ 769.063370] ? do_vfs_ioctl+0xcdb/0x12e0 [ 769.067432] ? __x64_sys_ioctl+0x6f/0xb0 [ 769.071494] ? do_syscall_64+0xf9/0x620 [ 769.075476] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 769.080844] ? debug_check_no_obj_freed+0x201/0x490 [ 769.085868] kernfs_create_dir_ns+0x9e/0x230 [ 769.090274] sysfs_create_dir_ns+0x127/0x280 [ 769.094689] ? sysfs_create_mount_point+0xb0/0xb0 [ 769.098184] block nbd3: shutting down sockets [ 769.099537] ? mark_held_locks+0xa6/0xf0 [ 769.099552] ? kfree+0x110/0x210 [ 769.099568] ? kfree_const+0x51/0x60 [ 769.099589] kobject_add_internal+0x2a5/0x9c0 [ 769.119653] kobject_add+0x150/0x1c0 [ 769.123366] ? kset_create_and_add+0x1a0/0x1a0 [ 769.127945] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 769.132621] ? lock_downgrade+0x720/0x720 [ 769.136778] ? kernfs_put.part.0+0x225/0x590 [ 769.141196] blk_mq_register_hctx+0x23c/0x2c0 [ 769.145727] blk_mq_sysfs_register+0x143/0x1c0 [ 769.150330] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 769.155351] ? workqueue_sysfs_register+0x391/0x3e0 [ 769.160368] ? blk_mq_init_queue+0xa0/0xa0 [ 769.164604] nbd_start_device+0x1f2/0xd60 [ 769.168752] ? security_capable+0x8f/0xc0 [ 769.172907] nbd_ioctl+0x62c/0xbe0 [ 769.176462] ? _copy_from_user+0xd2/0x130 [ 769.180611] ? nbd_disconnect_and_put+0x190/0x190 [ 769.185456] ? __lock_acquire+0x6de/0x3ff0 [ 769.189685] ? nbd_disconnect_and_put+0x190/0x190 [ 769.194523] blkdev_ioctl+0x5cb/0x1a80 [ 769.198406] ? blkpg_ioctl+0x9d0/0x9d0 [ 769.202287] ? get_pid_task+0xf4/0x190 [ 769.206167] ? mark_held_locks+0xf0/0xf0 [ 769.210217] ? proc_fail_nth_write+0x95/0x1d0 [ 769.214704] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 769.219624] ? __fdget_pos+0x26f/0x310 [ 769.223513] block_ioctl+0xe9/0x130 [ 769.227135] ? blkdev_fallocate+0x3f0/0x3f0 [ 769.231446] do_vfs_ioctl+0xcdb/0x12e0 [ 769.235324] ? lock_downgrade+0x720/0x720 [ 769.239464] ? check_preemption_disabled+0x41/0x280 [ 769.244474] ? ioctl_preallocate+0x200/0x200 [ 769.248881] ? __fget+0x356/0x510 [ 769.252333] ? do_dup2+0x450/0x450 executing program [ 769.255859] ? vfs_write+0x393/0x540 [ 769.259566] ? fput+0x2b/0x190 [ 769.262751] ksys_ioctl+0x9b/0xc0 [ 769.266199] __x64_sys_ioctl+0x6f/0xb0 [ 769.270076] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 769.274650] do_syscall_64+0xf9/0x620 [ 769.278452] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 769.283632] RIP: 0033:0x7f03750e1089 [ 769.287346] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 769.306329] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 769.314032] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 769.321295] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 769.328553] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 769.335811] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 769.343067] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 769.350347] CPU: 0 PID: 9390 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 769.351273] block nbd5: Could not allocate knbd recv work queue. [ 769.358227] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 769.358232] Call Trace: [ 769.358250] dump_stack+0x1fc/0x2ef [ 769.358270] should_fail.cold+0xa/0xf [ 769.358286] ? setup_fault_attr+0x200/0x200 [ 769.358299] ? lock_acquire+0x170/0x3c0 [ 769.358318] __should_failslab+0x115/0x180 [ 769.364604] block nbd4: Could not allocate knbd recv work queue. [ 769.373780] should_failslab+0x5/0x10 [ 769.373793] kmem_cache_alloc_trace+0x284/0x380 [ 769.373809] ? wait_for_completion_io+0x10/0x10 [ 769.377850] block nbd4: shutting down sockets [ 769.379986] ? kobj_ns_initial+0x90/0x90 [ 769.380003] call_usermodehelper_setup+0x84/0x300 [ 769.380023] kobject_uevent_env+0xe83/0x1480 [ 769.385210] block nbd5: shutting down sockets [ 769.388113] ? nbd_size_update+0x28a/0x660 [ 769.388128] ? queue_work_on+0x11a/0x1f0 [ 769.388145] nbd_start_device+0x811/0xd60 [ 769.392926] kobject_add_internal failed for cpu1 (error: -12 parent: 0) [ 769.396324] nbd_ioctl+0x62c/0xbe0 [ 769.396342] ? _copy_from_user+0xd2/0x130 [ 769.396358] ? nbd_disconnect_and_put+0x190/0x190 [ 769.409652] block nbd1: shutting down sockets [ 769.410927] ? __lock_acquire+0x6de/0x3ff0 [ 769.410945] ? nbd_disconnect_and_put+0x190/0x190 [ 769.410968] blkdev_ioctl+0x5cb/0x1a80 [ 769.486727] ? blkpg_ioctl+0x9d0/0x9d0 [ 769.490618] ? get_pid_task+0xf4/0x190 [ 769.494500] ? mark_held_locks+0xf0/0xf0 [ 769.498551] ? proc_fail_nth_write+0x95/0x1d0 [ 769.503036] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 769.507988] ? __fdget_pos+0x26f/0x310 [ 769.511880] block_ioctl+0xe9/0x130 [ 769.515496] ? blkdev_fallocate+0x3f0/0x3f0 [ 769.519807] do_vfs_ioctl+0xcdb/0x12e0 [ 769.523688] ? lock_downgrade+0x720/0x720 [ 769.527838] ? check_preemption_disabled+0x41/0x280 [ 769.532848] ? ioctl_preallocate+0x200/0x200 [ 769.537252] ? __fget+0x356/0x510 [ 769.540696] ? do_dup2+0x450/0x450 [ 769.544228] ? vfs_write+0x393/0x540 [ 769.547933] ? fput+0x2b/0x190 [ 769.551121] ksys_ioctl+0x9b/0xc0 [ 769.554566] __x64_sys_ioctl+0x6f/0xb0 [ 769.558442] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 769.563011] do_syscall_64+0xf9/0x620 [ 769.566804] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 769.571980] RIP: 0033:0x7f03750e1089 [ 769.575680] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 769.594566] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 executing program executing program [ 769.602264] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 769.609524] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 769.616911] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 769.624169] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 769.631427] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 769.638712] CPU: 1 PID: 9389 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 769.646596] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 769.655949] Call Trace: executing program [ 769.658553] dump_stack+0x1fc/0x2ef [ 769.662194] should_fail.cold+0xa/0xf [ 769.666006] ? setup_fault_attr+0x200/0x200 [ 769.670334] ? lock_acquire+0x170/0x3c0 [ 769.674322] __should_failslab+0x115/0x180 [ 769.678563] should_failslab+0x5/0x10 [ 769.682365] kmem_cache_alloc_trace+0x284/0x380 [ 769.687038] ? wait_for_completion_io+0x10/0x10 [ 769.691714] ? kobj_ns_initial+0x90/0x90 [ 769.695780] call_usermodehelper_setup+0x84/0x300 [ 769.695785] block nbd2: shutting down sockets [ 769.705117] kobject_uevent_env+0xe83/0x1480 [ 769.709526] ? nbd_size_update+0x28a/0x660 [ 769.713757] ? queue_work_on+0x11a/0x1f0 [ 769.717822] nbd_start_device+0x811/0xd60 [ 769.721972] nbd_ioctl+0x62c/0xbe0 [ 769.725498] ? _copy_from_user+0xd2/0x130 [ 769.729631] ? nbd_disconnect_and_put+0x190/0x190 [ 769.734471] ? __lock_acquire+0x6de/0x3ff0 [ 769.738700] ? nbd_disconnect_and_put+0x190/0x190 [ 769.743629] blkdev_ioctl+0x5cb/0x1a80 [ 769.747503] ? blkpg_ioctl+0x9d0/0x9d0 [ 769.751376] ? get_pid_task+0xf4/0x190 [ 769.755248] ? mark_held_locks+0xf0/0xf0 [ 769.759304] ? proc_fail_nth_write+0x95/0x1d0 [ 769.763901] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 769.768813] ? __fdget_pos+0x26f/0x310 [ 769.772689] block_ioctl+0xe9/0x130 [ 769.776298] ? blkdev_fallocate+0x3f0/0x3f0 [ 769.780604] do_vfs_ioctl+0xcdb/0x12e0 [ 769.784475] ? lock_downgrade+0x720/0x720 [ 769.788608] ? check_preemption_disabled+0x41/0x280 [ 769.793606] ? ioctl_preallocate+0x200/0x200 [ 769.798021] ? __fget+0x356/0x510 [ 769.801457] ? do_dup2+0x450/0x450 [ 769.804986] ? vfs_write+0x393/0x540 [ 769.808691] ? fput+0x2b/0x190 [ 769.813874] ksys_ioctl+0x9b/0xc0 [ 769.817321] __x64_sys_ioctl+0x6f/0xb0 [ 769.821200] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 769.825772] do_syscall_64+0xf9/0x620 [ 769.829559] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 769.834728] RIP: 0033:0x7f03750e1089 [ 769.838423] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 executing program executing program [ 769.857305] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 769.865089] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 769.872345] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 769.879598] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 769.886859] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 769.894116] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 769.902690] block nbd0: shutting down sockets executing program [ 769.933286] block nbd3: Device being setup by another task [ 769.939057] block nbd3: Could not allocate knbd recv work queue. [ 769.947856] block nbd3: shutting down sockets [ 769.952216] block nbd4: Device being setup by another task [ 769.971752] block nbd2: Device being setup by another task [ 769.971789] block nbd5: Device being setup by another task [ 769.994206] FAULT_INJECTION: forcing a failure. [ 769.994206] name failslab, interval 1, probability 0, space 0, times 0 [ 769.994258] FAULT_INJECTION: forcing a failure. [ 769.994258] name failslab, interval 1, probability 0, space 0, times 0 [ 770.005672] CPU: 0 PID: 9420 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 770.024637] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 770.033988] Call Trace: [ 770.036580] dump_stack+0x1fc/0x2ef [ 770.040205] should_fail.cold+0xa/0xf [ 770.044003] ? setup_fault_attr+0x200/0x200 [ 770.048321] ? lock_acquire+0x170/0x3c0 [ 770.052294] __should_failslab+0x115/0x180 [ 770.056531] should_failslab+0x5/0x10 [ 770.060330] kmem_cache_alloc_trace+0x284/0x380 [ 770.064990] ? wait_for_completion_io+0x10/0x10 [ 770.069652] ? kobj_ns_initial+0x90/0x90 [ 770.073711] call_usermodehelper_setup+0x84/0x300 [ 770.078550] kobject_uevent_env+0xe83/0x1480 [ 770.082955] ? nbd_size_update+0x28a/0x660 [ 770.087181] ? queue_work_on+0x11a/0x1f0 [ 770.091237] nbd_start_device+0x811/0xd60 [ 770.095397] nbd_ioctl+0x62c/0xbe0 [ 770.098933] ? _copy_from_user+0xd2/0x130 [ 770.103077] ? nbd_disconnect_and_put+0x190/0x190 [ 770.107918] ? __lock_acquire+0x6de/0x3ff0 [ 770.112169] ? nbd_disconnect_and_put+0x190/0x190 [ 770.117010] blkdev_ioctl+0x5cb/0x1a80 [ 770.120901] ? blkpg_ioctl+0x9d0/0x9d0 [ 770.124785] ? get_pid_task+0xf4/0x190 [ 770.128674] ? mark_held_locks+0xf0/0xf0 [ 770.132731] ? proc_fail_nth_write+0x95/0x1d0 [ 770.137222] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 770.142145] ? __fdget_pos+0x26f/0x310 [ 770.146032] block_ioctl+0xe9/0x130 [ 770.149650] ? blkdev_fallocate+0x3f0/0x3f0 [ 770.153964] do_vfs_ioctl+0xcdb/0x12e0 [ 770.157845] ? lock_downgrade+0x720/0x720 [ 770.161990] ? check_preemption_disabled+0x41/0x280 [ 770.167000] ? ioctl_preallocate+0x200/0x200 [ 770.171412] ? __fget+0x356/0x510 [ 770.174859] ? do_dup2+0x450/0x450 [ 770.178390] ? vfs_write+0x393/0x540 [ 770.182100] ? fput+0x2b/0x190 [ 770.185287] ksys_ioctl+0x9b/0xc0 [ 770.188733] __x64_sys_ioctl+0x6f/0xb0 [ 770.192610] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 770.197184] do_syscall_64+0xf9/0x620 [ 770.200990] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 770.206167] RIP: 0033:0x7f03750e1089 [ 770.209870] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 770.228759] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 770.236455] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 770.243716] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 770.250975] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 770.258244] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 770.265505] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 770.272791] CPU: 1 PID: 9403 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 770.280678] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 770.290032] Call Trace: executing program [ 770.292625] dump_stack+0x1fc/0x2ef [ 770.296267] should_fail.cold+0xa/0xf [ 770.300083] ? setup_fault_attr+0x200/0x200 [ 770.304411] ? lock_acquire+0x170/0x3c0 [ 770.308396] __should_failslab+0x115/0x180 [ 770.308499] block nbd0: shutting down sockets [ 770.312641] should_failslab+0x5/0x10 [ 770.312656] __kmalloc_track_caller+0x2a6/0x3c0 [ 770.312671] ? kstrdup_const+0x53/0x80 [ 770.312688] kstrdup+0x36/0x70 [ 770.312702] kstrdup_const+0x53/0x80 [ 770.312716] __kernfs_new_node+0x9b/0x680 [ 770.312727] ? kfree+0xcc/0x210 [ 770.312742] ? kobject_add+0x10d/0x1c0 [ 770.312755] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 770.312771] ? nbd_start_device+0x1f2/0xd60 [ 770.356705] ? nbd_ioctl+0x62c/0xbe0 [ 770.360409] ? blkdev_ioctl+0x5cb/0x1a80 [ 770.364463] ? do_vfs_ioctl+0xcdb/0x12e0 [ 770.368513] ? __x64_sys_ioctl+0x6f/0xb0 [ 770.372560] ? do_syscall_64+0xf9/0x620 [ 770.376533] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 770.381901] ? debug_check_no_obj_freed+0x201/0x490 [ 770.386910] kernfs_create_dir_ns+0x9e/0x230 [ 770.391309] sysfs_create_dir_ns+0x127/0x280 [ 770.395709] ? sysfs_create_mount_point+0xb0/0xb0 [ 770.400539] ? mark_held_locks+0xa6/0xf0 [ 770.404597] ? kfree+0x110/0x210 [ 770.408042] ? kfree_const+0x51/0x60 [ 770.411744] kobject_add_internal+0x2a5/0x9c0 [ 770.416228] kobject_add+0x150/0x1c0 [ 770.419931] ? kset_create_and_add+0x1a0/0x1a0 [ 770.425016] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 770.429669] ? lock_downgrade+0x720/0x720 [ 770.433806] ? kernfs_put.part.0+0x225/0x590 [ 770.438205] blk_mq_register_hctx+0x23c/0x2c0 [ 770.442691] blk_mq_sysfs_register+0x143/0x1c0 [ 770.447300] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 770.452308] ? workqueue_sysfs_register+0x391/0x3e0 [ 770.457326] ? blk_mq_init_queue+0xa0/0xa0 [ 770.461573] nbd_start_device+0x1f2/0xd60 [ 770.465714] ? security_capable+0x8f/0xc0 [ 770.469852] nbd_ioctl+0x62c/0xbe0 [ 770.473379] ? _copy_from_user+0xd2/0x130 [ 770.477513] ? nbd_disconnect_and_put+0x190/0x190 [ 770.482357] ? __lock_acquire+0x6de/0x3ff0 [ 770.486588] ? nbd_disconnect_and_put+0x190/0x190 [ 770.491428] blkdev_ioctl+0x5cb/0x1a80 [ 770.495309] ? blkpg_ioctl+0x9d0/0x9d0 [ 770.499272] ? get_pid_task+0xf4/0x190 [ 770.503142] ? mark_held_locks+0xf0/0xf0 [ 770.507194] ? proc_fail_nth_write+0x95/0x1d0 [ 770.511691] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 770.516610] ? __fdget_pos+0x26f/0x310 [ 770.520494] block_ioctl+0xe9/0x130 [ 770.524111] ? blkdev_fallocate+0x3f0/0x3f0 [ 770.528415] do_vfs_ioctl+0xcdb/0x12e0 [ 770.532299] ? lock_downgrade+0x720/0x720 [ 770.536441] ? check_preemption_disabled+0x41/0x280 [ 770.541445] ? ioctl_preallocate+0x200/0x200 [ 770.545839] ? __fget+0x356/0x510 [ 770.549280] ? do_dup2+0x450/0x450 [ 770.552906] ? vfs_write+0x393/0x540 [ 770.556616] ? fput+0x2b/0x190 [ 770.559794] ksys_ioctl+0x9b/0xc0 [ 770.563237] __x64_sys_ioctl+0x6f/0xb0 [ 770.567109] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 770.571678] do_syscall_64+0xf9/0x620 [ 770.575466] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 770.580646] RIP: 0033:0x7f03750e1089 [ 770.584360] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 770.603253] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 770.610955] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 770.618216] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 770.625476] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 770.632741] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 770.640121] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 770.649903] FAULT_INJECTION: forcing a failure. [ 770.649903] name failslab, interval 1, probability 0, space 0, times 0 [ 770.662427] block nbd3: Could not allocate knbd recv work queue. [ 770.664420] FAULT_INJECTION: forcing a failure. [ 770.664420] name failslab, interval 1, probability 0, space 0, times 0 [ 770.669696] FAULT_INJECTION: forcing a failure. [ 770.669696] name failslab, interval 1, probability 0, space 0, times 0 [ 770.679978] CPU: 1 PID: 9416 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 770.696470] block nbd3: shutting down sockets [ 770.699022] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 770.699028] Call Trace: [ 770.699048] dump_stack+0x1fc/0x2ef [ 770.699068] should_fail.cold+0xa/0xf [ 770.699085] ? setup_fault_attr+0x200/0x200 [ 770.699101] ? lock_acquire+0x170/0x3c0 [ 770.731178] __should_failslab+0x115/0x180 [ 770.735420] should_failslab+0x5/0x10 [ 770.739220] __kmalloc_track_caller+0x2a6/0x3c0 [ 770.743967] ? kvasprintf_const+0x60/0x190 [ 770.748198] kvasprintf+0xb5/0x150 [ 770.751737] ? bust_spinlocks+0xe0/0xe0 [ 770.755713] ? mark_held_locks+0xa6/0xf0 [ 770.759777] kvasprintf_const+0x60/0x190 [ 770.763840] kobject_set_name_vargs+0x56/0x150 [ 770.768417] kobject_add+0x10d/0x1c0 [ 770.772123] ? kset_create_and_add+0x1a0/0x1a0 [ 770.776694] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 770.781357] ? lock_downgrade+0x720/0x720 [ 770.785498] ? kernfs_put.part.0+0x225/0x590 [ 770.789905] blk_mq_register_hctx+0x23c/0x2c0 [ 770.794397] blk_mq_sysfs_register+0x143/0x1c0 [ 770.798987] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 770.803997] ? workqueue_sysfs_register+0x391/0x3e0 [ 770.809007] ? blk_mq_init_queue+0xa0/0xa0 [ 770.813241] nbd_start_device+0x1f2/0xd60 [ 770.817384] ? security_capable+0x8f/0xc0 [ 770.821553] nbd_ioctl+0x62c/0xbe0 [ 770.825092] ? _copy_from_user+0xd2/0x130 [ 770.829233] ? nbd_disconnect_and_put+0x190/0x190 [ 770.834127] ? __lock_acquire+0x6de/0x3ff0 [ 770.838365] ? nbd_disconnect_and_put+0x190/0x190 [ 770.843200] blkdev_ioctl+0x5cb/0x1a80 [ 770.847090] ? blkpg_ioctl+0x9d0/0x9d0 [ 770.850982] ? get_pid_task+0xf4/0x190 [ 770.854875] ? mark_held_locks+0xf0/0xf0 [ 770.858939] ? proc_fail_nth_write+0x95/0x1d0 [ 770.863434] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 770.868360] ? __fdget_pos+0x26f/0x310 [ 770.872255] block_ioctl+0xe9/0x130 [ 770.875885] ? blkdev_fallocate+0x3f0/0x3f0 [ 770.880235] do_vfs_ioctl+0xcdb/0x12e0 [ 770.884118] ? lock_downgrade+0x720/0x720 [ 770.888258] ? check_preemption_disabled+0x41/0x280 [ 770.893264] ? ioctl_preallocate+0x200/0x200 [ 770.897668] ? __fget+0x356/0x510 [ 770.901114] ? do_dup2+0x450/0x450 [ 770.904643] ? vfs_write+0x393/0x540 [ 770.908352] ? fput+0x2b/0x190 [ 770.911562] ksys_ioctl+0x9b/0xc0 [ 770.915015] __x64_sys_ioctl+0x6f/0xb0 [ 770.918902] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 770.923480] do_syscall_64+0xf9/0x620 [ 770.927276] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 770.932459] RIP: 0033:0x7f03750e1089 [ 770.936162] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 770.955060] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 770.962768] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 770.970032] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 770.977294] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 770.984559] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 770.991834] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 770.999113] CPU: 0 PID: 9415 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 771.001263] kobject_add_internal failed for cpu1 (error: -12 parent: 0) [ 771.006996] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 771.007001] Call Trace: [ 771.007020] dump_stack+0x1fc/0x2ef [ 771.007039] should_fail.cold+0xa/0xf [ 771.015757] block nbd4: shutting down sockets [ 771.023138] ? setup_fault_attr+0x200/0x200 [ 771.023153] ? lock_acquire+0x170/0x3c0 [ 771.023176] __should_failslab+0x115/0x180 [ 771.025945] kobject: can not set name properly! [ 771.029353] should_failslab+0x5/0x10 [ 771.035120] block nbd2: shutting down sockets [ 771.037608] __kmalloc_track_caller+0x2a6/0x3c0 [ 771.067633] ? kstrdup_const+0x53/0x80 [ 771.071518] kstrdup+0x36/0x70 [ 771.074705] kstrdup_const+0x53/0x80 [ 771.078415] __kernfs_new_node+0x9b/0x680 [ 771.082554] ? kfree+0xcc/0x210 [ 771.085834] ? kobject_add+0x10d/0x1c0 [ 771.089716] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 771.094466] ? nbd_start_device+0x1f2/0xd60 [ 771.098775] ? nbd_ioctl+0x62c/0xbe0 [ 771.102479] ? blkdev_ioctl+0x5cb/0x1a80 [ 771.106530] ? do_vfs_ioctl+0xcdb/0x12e0 [ 771.110577] ? __x64_sys_ioctl+0x6f/0xb0 [ 771.114627] ? do_syscall_64+0xf9/0x620 [ 771.118596] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 771.123954] ? debug_check_no_obj_freed+0x201/0x490 [ 771.128969] kernfs_create_dir_ns+0x9e/0x230 [ 771.133368] sysfs_create_dir_ns+0x127/0x280 [ 771.137778] ? sysfs_create_mount_point+0xb0/0xb0 [ 771.142616] ? mark_held_locks+0xa6/0xf0 [ 771.146666] ? kfree+0x110/0x210 [ 771.150026] ? kfree_const+0x51/0x60 [ 771.153733] kobject_add_internal+0x2a5/0x9c0 [ 771.158226] kobject_add+0x150/0x1c0 [ 771.161933] ? kset_create_and_add+0x1a0/0x1a0 [ 771.166510] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 771.171171] ? lock_downgrade+0x720/0x720 [ 771.175312] ? kernfs_put.part.0+0x225/0x590 [ 771.179715] blk_mq_register_hctx+0x23c/0x2c0 [ 771.184205] blk_mq_sysfs_register+0x143/0x1c0 [ 771.188784] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 771.193793] ? workqueue_sysfs_register+0x391/0x3e0 [ 771.198893] ? blk_mq_init_queue+0xa0/0xa0 [ 771.203127] nbd_start_device+0x1f2/0xd60 [ 771.207275] ? security_capable+0x8f/0xc0 [ 771.211420] nbd_ioctl+0x62c/0xbe0 [ 771.214951] ? _copy_from_user+0xd2/0x130 [ 771.219092] ? nbd_disconnect_and_put+0x190/0x190 [ 771.223929] ? __lock_acquire+0x6de/0x3ff0 [ 771.228157] ? nbd_disconnect_and_put+0x190/0x190 [ 771.232992] blkdev_ioctl+0x5cb/0x1a80 [ 771.236956] ? blkpg_ioctl+0x9d0/0x9d0 [ 771.240838] ? mark_held_locks+0xf0/0xf0 [ 771.244893] ? set_next_entity+0xb52/0x1dc0 [ 771.249204] ? pick_next_entity+0x27e/0x580 [ 771.253516] ? finish_task_switch+0x146/0x760 [ 771.258017] block_ioctl+0xe9/0x130 [ 771.261631] ? blkdev_fallocate+0x3f0/0x3f0 [ 771.265946] do_vfs_ioctl+0xcdb/0x12e0 [ 771.269842] ? lock_downgrade+0x720/0x720 [ 771.273994] ? check_preemption_disabled+0x41/0x280 [ 771.279012] ? ioctl_preallocate+0x200/0x200 [ 771.283418] ? __fget+0x356/0x510 [ 771.287003] ? do_dup2+0x450/0x450 [ 771.290628] ? io_schedule_timeout+0x140/0x140 [ 771.295207] ksys_ioctl+0x9b/0xc0 [ 771.298657] __x64_sys_ioctl+0x6f/0xb0 [ 771.302547] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 771.307123] do_syscall_64+0xf9/0x620 [ 771.310922] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 771.316101] RIP: 0033:0x7f03750e1089 [ 771.319807] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 771.338705] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 executing program [ 771.346415] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 771.353676] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 771.360935] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 771.368193] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 771.375452] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 771.382731] CPU: 1 PID: 9418 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 771.390620] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 771.400060] Call Trace: [ 771.402660] dump_stack+0x1fc/0x2ef [ 771.406301] should_fail.cold+0xa/0xf [ 771.410113] ? setup_fault_attr+0x200/0x200 [ 771.414444] ? lock_acquire+0x170/0x3c0 [ 771.418532] __should_failslab+0x115/0x180 [ 771.422772] should_failslab+0x5/0x10 [ 771.426576] kmem_cache_alloc+0x277/0x370 [ 771.430730] __d_alloc+0x2b/0xa10 [ 771.434189] ? __bpf_address_lookup+0x330/0x330 [ 771.438869] ? check_preemption_disabled+0x41/0x280 executing program [ 771.442808] kobject_add_internal failed for cpu1 (error: -12 parent: 0) [ 771.443890] d_alloc+0x4a/0x230 [ 771.443910] d_alloc_parallel+0xeb/0x19e0 [ 771.443935] ? mark_held_locks+0xf0/0xf0 [ 771.443953] ? __d_lookup_rcu+0x6b0/0x6b0 [ 771.459571] block nbd5: shutting down sockets [ 771.462141] ? mark_held_locks+0xf0/0xf0 [ 771.462159] ? __lockdep_init_map+0x100/0x5a0 [ 771.462174] ? __lockdep_init_map+0x100/0x5a0 [ 771.462191] __lookup_slow+0x18d/0x4a0 [ 771.462205] ? check_preemption_disabled+0x41/0x280 [ 771.462219] ? follow_dotdot_rcu+0x1040/0x1040 executing program executing program [ 771.462240] ? __d_lookup+0x411/0x710 [ 771.501256] ? d_lookup+0x18e/0x250 [ 771.504896] lookup_one_len+0x163/0x190 [ 771.508884] ? try_lookup_one_len+0x180/0x180 [ 771.513391] start_creating+0xc9/0x220 [ 771.517334] __debugfs_create_file+0x5e/0x480 [ 771.521871] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 771.527057] ? kvm_clock_get_cycles+0x14/0x30 [ 771.531626] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 771.536462] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 771.541392] ? init_srcu_struct_fields+0xca6/0x1190 [ 771.546408] ? srcu_reschedule+0x120/0x120 [ 771.550631] ? __raw_spin_lock_init+0x28/0x100 [ 771.555202] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 771.559948] ? nbd_clear_que+0x160/0x160 [ 771.564001] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 771.569002] ? workqueue_sysfs_register+0x391/0x3e0 [ 771.574004] ? blk_mq_init_queue+0xa0/0xa0 [ 771.578230] ? apparmor_sb_mount+0x970/0x970 [ 771.582625] nbd_start_device+0x1f2/0xd60 [ 771.586777] ? security_capable+0x8f/0xc0 [ 771.590918] nbd_ioctl+0x62c/0xbe0 [ 771.594445] ? _copy_from_user+0xd2/0x130 [ 771.598582] ? nbd_disconnect_and_put+0x190/0x190 [ 771.603412] ? __lock_acquire+0x6de/0x3ff0 [ 771.607631] ? nbd_disconnect_and_put+0x190/0x190 [ 771.612460] blkdev_ioctl+0x5cb/0x1a80 [ 771.616332] ? blkpg_ioctl+0x9d0/0x9d0 [ 771.620201] ? get_pid_task+0xf4/0x190 [ 771.624075] ? mark_held_locks+0xf0/0xf0 [ 771.628127] ? proc_fail_nth_write+0x95/0x1d0 [ 771.632617] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 771.637532] ? __fdget_pos+0x26f/0x310 [ 771.641411] block_ioctl+0xe9/0x130 [ 771.645029] ? blkdev_fallocate+0x3f0/0x3f0 [ 771.649350] do_vfs_ioctl+0xcdb/0x12e0 [ 771.653231] ? lock_downgrade+0x720/0x720 [ 771.657363] ? check_preemption_disabled+0x41/0x280 [ 771.662363] ? ioctl_preallocate+0x200/0x200 [ 771.666766] ? __fget+0x356/0x510 [ 771.670205] ? do_dup2+0x450/0x450 [ 771.673727] ? vfs_write+0x393/0x540 [ 771.677428] ? fput+0x2b/0x190 [ 771.680606] ksys_ioctl+0x9b/0xc0 [ 771.684041] __x64_sys_ioctl+0x6f/0xb0 [ 771.687915] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 771.692482] do_syscall_64+0xf9/0x620 [ 771.696275] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 771.701450] RIP: 0033:0x7f03750e1089 [ 771.705153] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 771.724035] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 771.731732] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 771.738992] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 771.746249] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 771.753510] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 771.760761] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 771.774700] block nbd1: shutting down sockets [ 771.782507] block nbd0: Device being setup by another task [ 771.789664] block nbd0: Could not allocate knbd recv work queue. executing program executing program executing program [ 771.799543] block nbd0: shutting down sockets [ 771.821773] block nbd3: Device being setup by another task [ 771.827684] block nbd3: Could not allocate knbd recv work queue. [ 771.835248] block nbd3: shutting down sockets [ 771.842203] block nbd5: Device being setup by another task [ 771.845293] block nbd2: Device being setup by another task [ 771.848185] block nbd5: Could not allocate knbd recv work queue. [ 771.856919] block nbd2: Could not allocate knbd recv work queue. [ 771.859695] block nbd4: Device being setup by another task [ 771.872059] block nbd2: shutting down sockets [ 771.873405] block nbd4: Could not allocate knbd recv work queue. [ 771.877305] FAULT_INJECTION: forcing a failure. [ 771.877305] name failslab, interval 1, probability 0, space 0, times 0 [ 771.887923] block nbd5: shutting down sockets executing program [ 771.900722] block nbd4: shutting down sockets [ 771.908113] FAULT_INJECTION: forcing a failure. [ 771.908113] name failslab, interval 1, probability 0, space 0, times 0 [ 771.916109] CPU: 0 PID: 9464 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 771.927171] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 771.936519] Call Trace: [ 771.939104] dump_stack+0x1fc/0x2ef [ 771.942728] should_fail.cold+0xa/0xf [ 771.946526] ? setup_fault_attr+0x200/0x200 [ 771.950845] ? lock_acquire+0x170/0x3c0 [ 771.954832] __should_failslab+0x115/0x180 [ 771.959061] should_failslab+0x5/0x10 [ 771.962856] kmem_cache_alloc_trace+0x284/0x380 [ 771.967515] ? wait_for_completion_io+0x10/0x10 [ 771.972177] ? kobj_ns_initial+0x90/0x90 [ 771.976235] call_usermodehelper_setup+0x84/0x300 [ 771.981078] kobject_uevent_env+0xe83/0x1480 [ 771.985486] ? nbd_size_update+0x28a/0x660 [ 771.989713] ? queue_work_on+0x11a/0x1f0 [ 771.993766] nbd_start_device+0x811/0xd60 [ 771.997915] nbd_ioctl+0x62c/0xbe0 [ 772.001450] ? _copy_from_user+0xd2/0x130 [ 772.005596] ? nbd_disconnect_and_put+0x190/0x190 [ 772.010434] ? __lock_acquire+0x6de/0x3ff0 [ 772.014662] ? nbd_disconnect_and_put+0x190/0x190 [ 772.019500] blkdev_ioctl+0x5cb/0x1a80 [ 772.023385] ? blkpg_ioctl+0x9d0/0x9d0 [ 772.027265] ? get_pid_task+0xf4/0x190 [ 772.031145] ? mark_held_locks+0xf0/0xf0 [ 772.035195] ? proc_fail_nth_write+0x95/0x1d0 [ 772.040125] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 772.045222] ? __fdget_pos+0x26f/0x310 [ 772.049117] block_ioctl+0xe9/0x130 [ 772.052742] ? blkdev_fallocate+0x3f0/0x3f0 [ 772.057064] do_vfs_ioctl+0xcdb/0x12e0 [ 772.060952] ? lock_downgrade+0x720/0x720 [ 772.065093] ? check_preemption_disabled+0x41/0x280 [ 772.070104] ? ioctl_preallocate+0x200/0x200 [ 772.074507] ? __fget+0x356/0x510 [ 772.077958] ? do_dup2+0x450/0x450 [ 772.081491] ? vfs_write+0x393/0x540 [ 772.085201] ? fput+0x2b/0x190 [ 772.088395] ksys_ioctl+0x9b/0xc0 [ 772.091850] __x64_sys_ioctl+0x6f/0xb0 [ 772.095733] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 772.100308] do_syscall_64+0xf9/0x620 [ 772.104122] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 772.109313] RIP: 0033:0x7f03750e1089 [ 772.113024] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 772.131928] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 772.139720] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 executing program executing program [ 772.146985] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 772.154247] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 772.161512] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 772.168782] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 772.176068] CPU: 1 PID: 9475 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 772.181643] block nbd1: shutting down sockets [ 772.183957] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 772.183963] Call Trace: [ 772.183982] dump_stack+0x1fc/0x2ef [ 772.184000] should_fail.cold+0xa/0xf [ 772.207877] ? setup_fault_attr+0x200/0x200 [ 772.212211] ? lock_acquire+0x170/0x3c0 [ 772.216186] __should_failslab+0x115/0x180 [ 772.220415] should_failslab+0x5/0x10 [ 772.224206] kmem_cache_alloc+0x277/0x370 [ 772.228341] skb_clone+0x151/0x3d0 [ 772.231878] netlink_broadcast_filtered+0x8e5/0xbc0 [ 772.236904] netlink_broadcast+0x35/0x40 [ 772.240958] kobject_uevent_env+0xa56/0x1480 [ 772.245355] ? nbd_size_update+0x28a/0x660 [ 772.249578] ? queue_work_on+0x11a/0x1f0 [ 772.253624] nbd_start_device+0x811/0xd60 [ 772.257768] nbd_ioctl+0x62c/0xbe0 [ 772.261301] ? _copy_from_user+0xd2/0x130 [ 772.265448] ? nbd_disconnect_and_put+0x190/0x190 [ 772.270290] ? __lock_acquire+0x6de/0x3ff0 [ 772.274523] ? nbd_disconnect_and_put+0x190/0x190 [ 772.279362] blkdev_ioctl+0x5cb/0x1a80 [ 772.283244] ? blkpg_ioctl+0x9d0/0x9d0 [ 772.287135] ? get_pid_task+0xf4/0x190 [ 772.291007] ? mark_held_locks+0xf0/0xf0 [ 772.295161] ? proc_fail_nth_write+0x95/0x1d0 [ 772.299731] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 772.304672] ? __fdget_pos+0x26f/0x310 [ 772.308549] block_ioctl+0xe9/0x130 [ 772.312160] ? blkdev_fallocate+0x3f0/0x3f0 [ 772.316578] do_vfs_ioctl+0xcdb/0x12e0 [ 772.320458] ? lock_downgrade+0x720/0x720 [ 772.324606] ? check_preemption_disabled+0x41/0x280 [ 772.329625] ? ioctl_preallocate+0x200/0x200 [ 772.334025] ? __fget+0x356/0x510 [ 772.337467] ? do_dup2+0x450/0x450 [ 772.340993] ? vfs_write+0x393/0x540 [ 772.344693] ? fput+0x2b/0x190 [ 772.347893] ksys_ioctl+0x9b/0xc0 [ 772.351350] __x64_sys_ioctl+0x6f/0xb0 [ 772.355225] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 772.359806] do_syscall_64+0xf9/0x620 [ 772.363609] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 772.368786] RIP: 0033:0x7f03750e1089 [ 772.372489] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 772.391390] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 executing program executing program [ 772.399094] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 772.406351] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 772.413607] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 772.420863] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 772.428119] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 772.437313] block nbd0: shutting down sockets executing program [ 772.471841] block nbd5: Device being setup by another task [ 772.472163] block nbd3: Could not allocate knbd recv work queue. [ 772.478240] block nbd5: Could not allocate knbd recv work queue. [ 772.490228] block nbd3: shutting down sockets [ 772.491512] block nbd4: Device being setup by another task [ 772.498635] block nbd5: shutting down sockets [ 772.500633] block nbd4: Could not allocate knbd recv work queue. [ 772.511821] block nbd2: Device being setup by another task [ 772.515538] block nbd4: shutting down sockets executing program executing program executing program [ 772.518036] block nbd2: Could not allocate knbd recv work queue. [ 772.526725] FAULT_INJECTION: forcing a failure. [ 772.526725] name failslab, interval 1, probability 0, space 0, times 0 [ 772.531692] block nbd2: shutting down sockets [ 772.542896] CPU: 1 PID: 9493 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 772.551825] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 772.561168] Call Trace: [ 772.563762] dump_stack+0x1fc/0x2ef [ 772.567393] should_fail.cold+0xa/0xf [ 772.571186] ? setup_fault_attr+0x200/0x200 [ 772.575495] ? lock_acquire+0x170/0x3c0 [ 772.579457] __should_failslab+0x115/0x180 [ 772.583679] should_failslab+0x5/0x10 [ 772.587464] kmem_cache_alloc+0x277/0x370 [ 772.591598] skb_clone+0x151/0x3d0 [ 772.595124] netlink_broadcast_filtered+0x8e5/0xbc0 [ 772.600221] netlink_broadcast+0x35/0x40 [ 772.604292] kobject_uevent_env+0xa56/0x1480 [ 772.608720] ? nbd_size_update+0x28a/0x660 [ 772.612949] ? queue_work_on+0x11a/0x1f0 [ 772.617000] nbd_start_device+0x811/0xd60 [ 772.621138] nbd_ioctl+0x62c/0xbe0 [ 772.624666] ? _copy_from_user+0xd2/0x130 [ 772.628798] ? nbd_disconnect_and_put+0x190/0x190 [ 772.633630] ? __lock_acquire+0x6de/0x3ff0 [ 772.637850] ? nbd_disconnect_and_put+0x190/0x190 [ 772.642676] blkdev_ioctl+0x5cb/0x1a80 [ 772.646548] ? blkpg_ioctl+0x9d0/0x9d0 [ 772.650523] ? get_pid_task+0xf4/0x190 [ 772.654401] ? mark_held_locks+0xf0/0xf0 [ 772.658448] ? proc_fail_nth_write+0x95/0x1d0 [ 772.662926] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 772.667840] ? __fdget_pos+0x26f/0x310 [ 772.671717] block_ioctl+0xe9/0x130 [ 772.675334] ? blkdev_fallocate+0x3f0/0x3f0 [ 772.679639] do_vfs_ioctl+0xcdb/0x12e0 [ 772.683512] ? lock_downgrade+0x720/0x720 [ 772.687643] ? check_preemption_disabled+0x41/0x280 [ 772.692642] ? ioctl_preallocate+0x200/0x200 [ 772.697035] ? __fget+0x356/0x510 [ 772.700483] ? do_dup2+0x450/0x450 [ 772.704025] ? vfs_write+0x393/0x540 [ 772.707722] ? fput+0x2b/0x190 [ 772.710901] ksys_ioctl+0x9b/0xc0 [ 772.714341] __x64_sys_ioctl+0x6f/0xb0 [ 772.718222] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 772.722798] do_syscall_64+0xf9/0x620 [ 772.726624] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 772.731802] RIP: 0033:0x7f03750e1089 [ 772.735500] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 772.754383] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 772.762076] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 772.769336] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 772.776607] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 772.783862] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 772.791114] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 772.800304] FAULT_INJECTION: forcing a failure. [ 772.800304] name failslab, interval 1, probability 0, space 0, times 0 [ 772.811806] CPU: 1 PID: 9501 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 772.819690] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 772.829036] Call Trace: [ 772.831615] dump_stack+0x1fc/0x2ef [ 772.835232] should_fail.cold+0xa/0xf [ 772.839020] ? setup_fault_attr+0x200/0x200 [ 772.843336] ? lock_acquire+0x170/0x3c0 [ 772.847299] __should_failslab+0x115/0x180 [ 772.851521] should_failslab+0x5/0x10 [ 772.855306] kmem_cache_alloc+0x277/0x370 [ 772.859446] skb_clone+0x151/0x3d0 [ 772.862978] netlink_broadcast_filtered+0x8e5/0xbc0 [ 772.867987] netlink_broadcast+0x35/0x40 [ 772.872035] kobject_uevent_env+0xa56/0x1480 [ 772.876439] ? nbd_size_update+0x28a/0x660 [ 772.880658] ? queue_work_on+0x11a/0x1f0 [ 772.884707] nbd_start_device+0x811/0xd60 [ 772.888851] nbd_ioctl+0x62c/0xbe0 [ 772.892382] ? _copy_from_user+0xd2/0x130 [ 772.896518] ? nbd_disconnect_and_put+0x190/0x190 [ 772.901349] ? __lock_acquire+0x6de/0x3ff0 [ 772.905568] ? nbd_disconnect_and_put+0x190/0x190 [ 772.910394] blkdev_ioctl+0x5cb/0x1a80 [ 772.914268] ? blkpg_ioctl+0x9d0/0x9d0 [ 772.918230] ? get_pid_task+0xf4/0x190 [ 772.922102] ? mark_held_locks+0xf0/0xf0 [ 772.926156] ? proc_fail_nth_write+0x95/0x1d0 [ 772.930639] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 772.935554] ? __fdget_pos+0x26f/0x310 [ 772.939442] block_ioctl+0xe9/0x130 [ 772.943061] ? blkdev_fallocate+0x3f0/0x3f0 [ 772.947366] do_vfs_ioctl+0xcdb/0x12e0 [ 772.951252] ? lock_downgrade+0x720/0x720 [ 772.955389] ? check_preemption_disabled+0x41/0x280 [ 772.960390] ? ioctl_preallocate+0x200/0x200 [ 772.964793] ? __fget+0x356/0x510 [ 772.968242] ? do_dup2+0x450/0x450 [ 772.971863] ? vfs_write+0x393/0x540 [ 772.975561] ? fput+0x2b/0x190 [ 772.978745] ksys_ioctl+0x9b/0xc0 [ 772.982185] __x64_sys_ioctl+0x6f/0xb0 [ 772.986066] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 772.990643] do_syscall_64+0xf9/0x620 [ 772.994433] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 772.999607] RIP: 0033:0x7f03750e1089 [ 773.003304] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 773.022279] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 773.030070] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 773.037321] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 773.044573] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 773.051825] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 773.059073] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 773.081529] block nbd5: Device being setup by another task [ 773.083979] block nbd2: Device being setup by another task [ 773.087335] block nbd5: Could not allocate knbd recv work queue. [ 773.098955] block nbd4: Device being setup by another task [ 773.099607] block nbd2: Could not allocate knbd recv work queue. [ 773.108057] FAULT_INJECTION: forcing a failure. [ 773.108057] name failslab, interval 1, probability 0, space 0, times 0 [ 773.111219] block nbd4: Could not allocate knbd recv work queue. [ 773.130548] block nbd2: shutting down sockets [ 773.136805] block nbd5: shutting down sockets [ 773.141261] CPU: 1 PID: 9516 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 773.143907] block nbd4: shutting down sockets [ 773.149174] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 773.149179] Call Trace: [ 773.149199] dump_stack+0x1fc/0x2ef [ 773.149218] should_fail.cold+0xa/0xf [ 773.172975] ? setup_fault_attr+0x200/0x200 [ 773.177285] ? lock_acquire+0x170/0x3c0 [ 773.181248] __should_failslab+0x115/0x180 [ 773.185471] should_failslab+0x5/0x10 [ 773.189331] kmem_cache_alloc_trace+0x284/0x380 [ 773.193985] ? wait_for_completion_io+0x10/0x10 [ 773.198638] ? kobj_ns_initial+0x90/0x90 [ 773.202693] call_usermodehelper_setup+0x84/0x300 [ 773.207527] kobject_uevent_env+0xe83/0x1480 [ 773.211922] ? nbd_size_update+0x28a/0x660 [ 773.216138] ? queue_work_on+0x11a/0x1f0 [ 773.220185] nbd_start_device+0x811/0xd60 [ 773.224373] nbd_ioctl+0x62c/0xbe0 [ 773.227900] ? _copy_from_user+0xd2/0x130 [ 773.232031] ? nbd_disconnect_and_put+0x190/0x190 [ 773.236859] ? __lock_acquire+0x6de/0x3ff0 [ 773.241107] ? nbd_disconnect_and_put+0x190/0x190 [ 773.245937] blkdev_ioctl+0x5cb/0x1a80 [ 773.249807] ? blkpg_ioctl+0x9d0/0x9d0 [ 773.253680] ? get_pid_task+0xf4/0x190 [ 773.257560] ? mark_held_locks+0xf0/0xf0 [ 773.261617] ? proc_fail_nth_write+0x95/0x1d0 [ 773.266109] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 773.271028] ? __fdget_pos+0x26f/0x310 [ 773.274915] block_ioctl+0xe9/0x130 [ 773.278526] ? blkdev_fallocate+0x3f0/0x3f0 [ 773.282836] do_vfs_ioctl+0xcdb/0x12e0 [ 773.286710] ? lock_downgrade+0x720/0x720 [ 773.290840] ? check_preemption_disabled+0x41/0x280 [ 773.295853] ? ioctl_preallocate+0x200/0x200 [ 773.300262] ? __fget+0x356/0x510 [ 773.303700] ? do_dup2+0x450/0x450 [ 773.307222] ? vfs_write+0x393/0x540 [ 773.310922] ? fput+0x2b/0x190 [ 773.314101] ksys_ioctl+0x9b/0xc0 [ 773.317541] __x64_sys_ioctl+0x6f/0xb0 [ 773.321421] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 773.326026] do_syscall_64+0xf9/0x620 [ 773.329819] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 773.334997] RIP: 0033:0x7f03750e1089 [ 773.338693] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 773.357575] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 773.365263] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 773.372513] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 executing program executing program executing program [ 773.379775] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 773.387026] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 773.394288] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 executing program executing program [ 773.467418] block nbd1: shutting down sockets [ 773.467677] block nbd0: shutting down sockets [ 773.506383] block nbd3: shutting down sockets [ 773.512370] FAULT_INJECTION: forcing a failure. executing program [ 773.512370] name failslab, interval 1, probability 0, space 0, times 0 [ 773.525036] FAULT_INJECTION: forcing a failure. [ 773.525036] name failslab, interval 1, probability 0, space 0, times 0 [ 773.531792] CPU: 1 PID: 9528 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 773.544100] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 773.553439] Call Trace: [ 773.556023] dump_stack+0x1fc/0x2ef [ 773.559643] should_fail.cold+0xa/0xf [ 773.563437] ? setup_fault_attr+0x200/0x200 [ 773.567752] ? lock_acquire+0x170/0x3c0 [ 773.571727] __should_failslab+0x115/0x180 [ 773.575956] should_failslab+0x5/0x10 [ 773.579750] kmem_cache_alloc+0x277/0x370 [ 773.583889] __d_alloc+0x2b/0xa10 [ 773.587336] ? __bpf_address_lookup+0x330/0x330 [ 773.592002] ? check_preemption_disabled+0x41/0x280 [ 773.597015] d_alloc+0x4a/0x230 [ 773.600290] d_alloc_parallel+0xeb/0x19e0 [ 773.604439] ? mark_held_locks+0xf0/0xf0 [ 773.608492] ? __d_lookup_rcu+0x6b0/0x6b0 [ 773.612636] ? mark_held_locks+0xf0/0xf0 [ 773.616696] ? __lockdep_init_map+0x100/0x5a0 [ 773.621184] ? __lockdep_init_map+0x100/0x5a0 [ 773.625686] __lookup_slow+0x18d/0x4a0 [ 773.629566] ? check_preemption_disabled+0x41/0x280 [ 773.634584] ? follow_dotdot_rcu+0x1040/0x1040 [ 773.639161] ? __d_lookup+0x411/0x710 [ 773.642975] ? d_lookup+0x18e/0x250 [ 773.646609] lookup_one_len+0x163/0x190 [ 773.650584] ? try_lookup_one_len+0x180/0x180 [ 773.655080] start_creating+0xc9/0x220 [ 773.658959] __debugfs_create_file+0x5e/0x480 [ 773.663449] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 773.668628] ? kvm_clock_get_cycles+0x14/0x30 [ 773.673117] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 773.678042] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 773.682960] ? init_srcu_struct_fields+0xca6/0x1190 [ 773.687970] ? srcu_reschedule+0x120/0x120 [ 773.692197] ? __raw_spin_lock_init+0x28/0x100 [ 773.696771] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 773.701526] ? nbd_clear_que+0x160/0x160 [ 773.705582] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 773.710589] ? workqueue_sysfs_register+0x391/0x3e0 [ 773.715602] ? blk_mq_init_queue+0xa0/0xa0 [ 773.719830] ? apparmor_sb_mount+0x970/0x970 [ 773.724234] nbd_start_device+0x1f2/0xd60 [ 773.728375] ? security_capable+0x8f/0xc0 [ 773.732520] nbd_ioctl+0x62c/0xbe0 [ 773.736142] ? _copy_from_user+0xd2/0x130 [ 773.740289] ? nbd_disconnect_and_put+0x190/0x190 [ 773.745155] ? __lock_acquire+0x6de/0x3ff0 [ 773.749385] ? nbd_disconnect_and_put+0x190/0x190 [ 773.754305] blkdev_ioctl+0x5cb/0x1a80 [ 773.758185] ? blkpg_ioctl+0x9d0/0x9d0 [ 773.762065] ? get_pid_task+0xf4/0x190 [ 773.765946] ? mark_held_locks+0xf0/0xf0 [ 773.769996] ? proc_fail_nth_write+0x95/0x1d0 [ 773.774480] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 773.779399] ? __fdget_pos+0x26f/0x310 [ 773.783282] block_ioctl+0xe9/0x130 [ 773.786904] ? blkdev_fallocate+0x3f0/0x3f0 [ 773.791217] do_vfs_ioctl+0xcdb/0x12e0 [ 773.795095] ? lock_downgrade+0x720/0x720 [ 773.799233] ? check_preemption_disabled+0x41/0x280 [ 773.804246] ? ioctl_preallocate+0x200/0x200 [ 773.808649] ? __fget+0x356/0x510 [ 773.812104] ? do_dup2+0x450/0x450 [ 773.815632] ? vfs_write+0x393/0x540 [ 773.819337] ? fput+0x2b/0x190 [ 773.822525] ksys_ioctl+0x9b/0xc0 [ 773.825971] __x64_sys_ioctl+0x6f/0xb0 [ 773.829869] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 773.834450] do_syscall_64+0xf9/0x620 [ 773.838256] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 773.843442] RIP: 0033:0x7f03750e1089 [ 773.847151] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 773.866041] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 773.873742] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 773.881001] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 773.888256] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 773.895514] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 773.902770] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 773.910050] CPU: 0 PID: 9527 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 773.917932] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 773.927363] Call Trace: [ 773.929947] dump_stack+0x1fc/0x2ef [ 773.933563] should_fail.cold+0xa/0xf [ 773.937349] ? setup_fault_attr+0x200/0x200 [ 773.941740] ? lock_acquire+0x170/0x3c0 [ 773.945698] __should_failslab+0x115/0x180 [ 773.949918] should_failslab+0x5/0x10 [ 773.953715] kmem_cache_alloc+0x277/0x370 [ 773.957872] __d_alloc+0x2b/0xa10 [ 773.961415] ? __bpf_address_lookup+0x330/0x330 [ 773.966088] ? check_preemption_disabled+0x41/0x280 [ 773.971112] d_alloc+0x4a/0x230 [ 773.974402] d_alloc_parallel+0xeb/0x19e0 [ 773.978567] ? mark_held_locks+0xf0/0xf0 [ 773.982637] ? __d_lookup_rcu+0x6b0/0x6b0 [ 773.986414] FAULT_INJECTION: forcing a failure. [ 773.986414] name failslab, interval 1, probability 0, space 0, times 0 [ 773.986795] ? mark_held_locks+0xf0/0xf0 [ 773.986812] ? __lockdep_init_map+0x100/0x5a0 [ 773.986828] ? __lockdep_init_map+0x100/0x5a0 [ 773.986852] __lookup_slow+0x18d/0x4a0 [ 774.014975] ? check_preemption_disabled+0x41/0x280 [ 774.019988] ? follow_dotdot_rcu+0x1040/0x1040 [ 774.024573] ? __d_lookup+0x411/0x710 [ 774.028374] ? d_lookup+0x18e/0x250 [ 774.031997] lookup_one_len+0x163/0x190 [ 774.035964] ? try_lookup_one_len+0x180/0x180 [ 774.040460] start_creating+0xc9/0x220 [ 774.040959] block nbd5: shutting down sockets [ 774.044340] __debugfs_create_file+0x5e/0x480 [ 774.044360] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 774.044374] ? kvm_clock_get_cycles+0x14/0x30 [ 774.044389] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 774.044404] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 774.072747] ? init_srcu_struct_fields+0xca6/0x1190 [ 774.077761] ? srcu_reschedule+0x120/0x120 [ 774.081988] ? __raw_spin_lock_init+0x28/0x100 [ 774.086578] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 774.091352] ? nbd_clear_que+0x160/0x160 [ 774.095421] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 774.100442] ? workqueue_sysfs_register+0x391/0x3e0 [ 774.105466] ? blk_mq_init_queue+0xa0/0xa0 [ 774.109701] ? apparmor_sb_mount+0x970/0x970 [ 774.114115] nbd_start_device+0x1f2/0xd60 [ 774.118260] ? security_capable+0x8f/0xc0 [ 774.122411] nbd_ioctl+0x62c/0xbe0 [ 774.125953] ? _copy_from_user+0xd2/0x130 [ 774.130103] ? nbd_disconnect_and_put+0x190/0x190 [ 774.134942] ? __lock_acquire+0x6de/0x3ff0 [ 774.139169] ? nbd_disconnect_and_put+0x190/0x190 [ 774.144002] blkdev_ioctl+0x5cb/0x1a80 [ 774.147880] ? blkpg_ioctl+0x9d0/0x9d0 [ 774.151770] ? get_pid_task+0xf4/0x190 [ 774.155920] ? mark_held_locks+0xf0/0xf0 [ 774.159977] ? proc_fail_nth_write+0x95/0x1d0 [ 774.164468] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 774.169394] ? __fdget_pos+0x26f/0x310 [ 774.173282] block_ioctl+0xe9/0x130 [ 774.176902] ? blkdev_fallocate+0x3f0/0x3f0 [ 774.181220] do_vfs_ioctl+0xcdb/0x12e0 [ 774.185108] ? lock_downgrade+0x720/0x720 [ 774.189253] ? check_preemption_disabled+0x41/0x280 [ 774.194266] ? ioctl_preallocate+0x200/0x200 [ 774.198670] ? __fget+0x356/0x510 [ 774.202116] ? do_dup2+0x450/0x450 [ 774.205658] ? vfs_write+0x393/0x540 [ 774.209369] ? fput+0x2b/0x190 [ 774.212563] ksys_ioctl+0x9b/0xc0 [ 774.216017] __x64_sys_ioctl+0x6f/0xb0 [ 774.219902] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 774.224480] do_syscall_64+0xf9/0x620 [ 774.228380] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 774.233563] RIP: 0033:0x7f03750e1089 [ 774.237274] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 774.256166] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 774.263873] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 774.271135] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 774.278408] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 774.285682] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 774.292945] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 774.300253] CPU: 1 PID: 9540 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 774.303539] FAULT_INJECTION: forcing a failure. [ 774.303539] name failslab, interval 1, probability 0, space 0, times 0 [ 774.308144] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 774.328644] Call Trace: [ 774.331241] dump_stack+0x1fc/0x2ef [ 774.334880] should_fail.cold+0xa/0xf [ 774.338685] ? setup_fault_attr+0x200/0x200 [ 774.343005] ? lock_acquire+0x170/0x3c0 [ 774.346985] __should_failslab+0x115/0x180 [ 774.351213] should_failslab+0x5/0x10 [ 774.355009] kmem_cache_alloc_trace+0x284/0x380 [ 774.359671] ? wait_for_completion_io+0x10/0x10 [ 774.364330] ? kobj_ns_initial+0x90/0x90 [ 774.368387] call_usermodehelper_setup+0x84/0x300 [ 774.373232] kobject_uevent_env+0xe83/0x1480 [ 774.377637] ? nbd_size_update+0x28a/0x660 [ 774.381863] ? queue_work_on+0x11a/0x1f0 [ 774.385918] nbd_start_device+0x811/0xd60 [ 774.390153] nbd_ioctl+0x62c/0xbe0 [ 774.393685] ? _copy_from_user+0xd2/0x130 [ 774.397826] ? nbd_disconnect_and_put+0x190/0x190 [ 774.402664] ? __lock_acquire+0x6de/0x3ff0 [ 774.406892] ? nbd_disconnect_and_put+0x190/0x190 [ 774.411729] blkdev_ioctl+0x5cb/0x1a80 [ 774.415611] ? blkpg_ioctl+0x9d0/0x9d0 [ 774.419587] ? get_pid_task+0xf4/0x190 [ 774.423474] ? mark_held_locks+0xf0/0xf0 [ 774.427538] ? proc_fail_nth_write+0x95/0x1d0 [ 774.432033] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 774.436953] ? __fdget_pos+0x26f/0x310 [ 774.440837] block_ioctl+0xe9/0x130 [ 774.444459] ? blkdev_fallocate+0x3f0/0x3f0 [ 774.448780] do_vfs_ioctl+0xcdb/0x12e0 [ 774.452666] ? lock_downgrade+0x720/0x720 [ 774.456807] ? check_preemption_disabled+0x41/0x280 [ 774.461820] ? ioctl_preallocate+0x200/0x200 [ 774.466233] ? __fget+0x356/0x510 [ 774.469690] ? do_dup2+0x450/0x450 [ 774.473223] ? vfs_write+0x393/0x540 [ 774.476931] ? fput+0x2b/0x190 [ 774.480131] ksys_ioctl+0x9b/0xc0 [ 774.483577] __x64_sys_ioctl+0x6f/0xb0 [ 774.487459] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 774.492040] do_syscall_64+0xf9/0x620 [ 774.495843] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 774.501021] RIP: 0033:0x7f03750e1089 [ 774.504730] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 774.523630] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 774.531332] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 774.538592] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 774.545852] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 774.553110] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 774.560376] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 executing program executing program [ 774.567653] CPU: 0 PID: 9529 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 774.575020] block nbd0: shutting down sockets [ 774.575539] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 774.585170] block nbd4: shutting down sockets [ 774.589351] Call Trace: [ 774.589372] dump_stack+0x1fc/0x2ef [ 774.589392] should_fail.cold+0xa/0xf [ 774.589409] ? setup_fault_attr+0x200/0x200 [ 774.589426] ? lock_acquire+0x170/0x3c0 [ 774.612145] __should_failslab+0x115/0x180 [ 774.616393] should_failslab+0x5/0x10 executing program [ 774.620376] kmem_cache_alloc+0x277/0x370 [ 774.624534] __d_alloc+0x2b/0xa10 [ 774.627992] ? __bpf_address_lookup+0x330/0x330 [ 774.632660] ? check_preemption_disabled+0x41/0x280 [ 774.637663] d_alloc+0x4a/0x230 [ 774.640930] d_alloc_parallel+0xeb/0x19e0 [ 774.645070] ? mark_held_locks+0xf0/0xf0 [ 774.649117] ? __d_lookup_rcu+0x6b0/0x6b0 [ 774.653250] ? mark_held_locks+0xf0/0xf0 [ 774.657530] ? __lockdep_init_map+0x100/0x5a0 [ 774.662017] ? __lockdep_init_map+0x100/0x5a0 [ 774.666496] __lookup_slow+0x18d/0x4a0 [ 774.670371] ? check_preemption_disabled+0x41/0x280 [ 774.675375] ? follow_dotdot_rcu+0x1040/0x1040 [ 774.679953] ? __d_lookup+0x411/0x710 [ 774.683752] ? d_lookup+0x18e/0x250 [ 774.687366] lookup_one_len+0x163/0x190 [ 774.691335] ? try_lookup_one_len+0x180/0x180 [ 774.695825] start_creating+0xc9/0x220 [ 774.699696] __debugfs_create_file+0x5e/0x480 [ 774.704183] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 774.709357] ? kvm_clock_get_cycles+0x14/0x30 [ 774.713834] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 774.718671] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 774.723604] ? init_srcu_struct_fields+0xca6/0x1190 [ 774.728619] ? srcu_reschedule+0x120/0x120 [ 774.732841] ? __raw_spin_lock_init+0x28/0x100 [ 774.737412] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 774.742157] ? nbd_clear_que+0x160/0x160 [ 774.746205] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 774.751203] ? workqueue_sysfs_register+0x391/0x3e0 [ 774.756214] ? blk_mq_init_queue+0xa0/0xa0 [ 774.760440] ? apparmor_sb_mount+0x970/0x970 [ 774.764833] nbd_start_device+0x1f2/0xd60 [ 774.768972] ? security_capable+0x8f/0xc0 [ 774.773113] nbd_ioctl+0x62c/0xbe0 [ 774.776640] ? _copy_from_user+0xd2/0x130 [ 774.780780] ? nbd_disconnect_and_put+0x190/0x190 [ 774.785618] ? __lock_acquire+0x6de/0x3ff0 [ 774.789837] ? nbd_disconnect_and_put+0x190/0x190 [ 774.794663] blkdev_ioctl+0x5cb/0x1a80 [ 774.798539] ? blkpg_ioctl+0x9d0/0x9d0 [ 774.802412] ? get_pid_task+0xf4/0x190 [ 774.806293] ? mark_held_locks+0xf0/0xf0 [ 774.810345] ? proc_fail_nth_write+0x95/0x1d0 [ 774.814822] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 774.819737] ? __fdget_pos+0x26f/0x310 [ 774.823612] block_ioctl+0xe9/0x130 [ 774.827224] ? blkdev_fallocate+0x3f0/0x3f0 [ 774.831537] do_vfs_ioctl+0xcdb/0x12e0 [ 774.835408] ? lock_downgrade+0x720/0x720 [ 774.839551] ? check_preemption_disabled+0x41/0x280 [ 774.844612] ? ioctl_preallocate+0x200/0x200 [ 774.849014] ? __fget+0x356/0x510 [ 774.852452] ? do_dup2+0x450/0x450 [ 774.855976] ? vfs_write+0x393/0x540 [ 774.859675] ? fput+0x2b/0x190 [ 774.862852] ksys_ioctl+0x9b/0xc0 [ 774.866290] __x64_sys_ioctl+0x6f/0xb0 [ 774.870166] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 774.874738] do_syscall_64+0xf9/0x620 [ 774.878527] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 774.883698] RIP: 0033:0x7f03750e1089 [ 774.887396] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 774.906279] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 774.913970] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 774.921227] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 774.928485] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 774.935747] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 774.943007] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 774.952088] block nbd1: Could not allocate knbd recv work queue. [ 774.957218] block nbd2: shutting down sockets [ 774.962989] block nbd3: Could not allocate knbd recv work queue. executing program [ 774.970498] block nbd3: shutting down sockets [ 774.979259] block nbd1: shutting down sockets [ 774.986224] block nbd5: Device being setup by another task [ 774.992266] block nbd5: Could not allocate knbd recv work queue. [ 775.001826] block nbd0: Device being setup by another task [ 775.007592] block nbd4: Device being setup by another task [ 775.014957] block nbd5: shutting down sockets executing program executing program executing program executing program executing program [ 775.015639] block nbd0: Could not allocate knbd recv work queue. [ 775.026952] block nbd4: Could not allocate knbd recv work queue. [ 775.033133] block nbd0: shutting down sockets [ 775.040274] block nbd4: shutting down sockets [ 775.052976] FAULT_INJECTION: forcing a failure. [ 775.052976] name failslab, interval 1, probability 0, space 0, times 0 [ 775.067766] CPU: 1 PID: 9566 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 775.072537] FAULT_INJECTION: forcing a failure. [ 775.072537] name failslab, interval 1, probability 0, space 0, times 0 [ 775.075642] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 775.075647] Call Trace: [ 775.075667] dump_stack+0x1fc/0x2ef [ 775.075684] should_fail.cold+0xa/0xf [ 775.075704] ? setup_fault_attr+0x200/0x200 [ 775.110477] ? lock_acquire+0x170/0x3c0 [ 775.114459] __should_failslab+0x115/0x180 [ 775.118704] should_failslab+0x5/0x10 [ 775.122502] kmem_cache_alloc_trace+0x284/0x380 [ 775.127165] ? wait_for_completion_io+0x10/0x10 [ 775.131830] ? kobj_ns_initial+0x90/0x90 [ 775.135889] call_usermodehelper_setup+0x84/0x300 [ 775.140732] kobject_uevent_env+0xe83/0x1480 [ 775.145150] ? nbd_size_update+0x28a/0x660 [ 775.149385] ? queue_work_on+0x11a/0x1f0 [ 775.153446] nbd_start_device+0x811/0xd60 [ 775.157596] nbd_ioctl+0x62c/0xbe0 [ 775.161135] ? _copy_from_user+0xd2/0x130 [ 775.165283] ? nbd_disconnect_and_put+0x190/0x190 [ 775.170124] ? __lock_acquire+0x6de/0x3ff0 [ 775.174355] ? nbd_disconnect_and_put+0x190/0x190 [ 775.179188] blkdev_ioctl+0x5cb/0x1a80 [ 775.183069] ? blkpg_ioctl+0x9d0/0x9d0 [ 775.186952] ? get_pid_task+0xf4/0x190 [ 775.190846] ? mark_held_locks+0xf0/0xf0 [ 775.194912] ? proc_fail_nth_write+0x95/0x1d0 [ 775.199404] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 775.204333] ? __fdget_pos+0x26f/0x310 [ 775.208223] block_ioctl+0xe9/0x130 [ 775.211838] ? blkdev_fallocate+0x3f0/0x3f0 [ 775.216149] do_vfs_ioctl+0xcdb/0x12e0 [ 775.220035] ? lock_downgrade+0x720/0x720 [ 775.224175] ? check_preemption_disabled+0x41/0x280 [ 775.229183] ? ioctl_preallocate+0x200/0x200 [ 775.233596] ? __fget+0x356/0x510 [ 775.237047] ? do_dup2+0x450/0x450 [ 775.240580] ? vfs_write+0x393/0x540 [ 775.244288] ? fput+0x2b/0x190 [ 775.247477] ksys_ioctl+0x9b/0xc0 [ 775.250925] __x64_sys_ioctl+0x6f/0xb0 [ 775.254807] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 775.259381] do_syscall_64+0xf9/0x620 [ 775.263176] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 775.268355] RIP: 0033:0x7f03750e1089 [ 775.272061] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 775.290951] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 775.298653] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 775.305918] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 775.313177] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 775.320439] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 775.327706] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 775.334990] CPU: 0 PID: 9573 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 775.342883] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 775.352341] Call Trace: [ 775.354349] block nbd1: Could not allocate knbd recv work queue. [ 775.354930] dump_stack+0x1fc/0x2ef [ 775.364799] should_fail.cold+0xa/0xf [ 775.366245] block nbd1: shutting down sockets executing program [ 775.368607] ? setup_fault_attr+0x200/0x200 [ 775.368623] ? lock_acquire+0x170/0x3c0 [ 775.368645] __should_failslab+0x115/0x180 [ 775.385608] should_failslab+0x5/0x10 [ 775.389396] kmem_cache_alloc+0x277/0x370 [ 775.393533] skb_clone+0x151/0x3d0 [ 775.397063] netlink_broadcast_filtered+0x8e5/0xbc0 [ 775.402070] netlink_broadcast+0x35/0x40 [ 775.406117] kobject_uevent_env+0xa56/0x1480 [ 775.410514] ? nbd_size_update+0x28a/0x660 [ 775.414733] ? queue_work_on+0x11a/0x1f0 [ 775.418781] nbd_start_device+0x811/0xd60 [ 775.422935] nbd_ioctl+0x62c/0xbe0 [ 775.426471] ? _copy_from_user+0xd2/0x130 [ 775.430615] ? nbd_disconnect_and_put+0x190/0x190 [ 775.435457] ? __lock_acquire+0x6de/0x3ff0 [ 775.439689] ? nbd_disconnect_and_put+0x190/0x190 [ 775.444522] blkdev_ioctl+0x5cb/0x1a80 [ 775.448395] ? blkpg_ioctl+0x9d0/0x9d0 [ 775.452270] ? get_pid_task+0xf4/0x190 [ 775.456149] ? mark_held_locks+0xf0/0xf0 [ 775.460203] ? proc_fail_nth_write+0x95/0x1d0 [ 775.464695] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 775.466514] block nbd2: shutting down sockets [ 775.469619] ? __fdget_pos+0x26f/0x310 [ 775.469640] block_ioctl+0xe9/0x130 [ 775.481625] ? blkdev_fallocate+0x3f0/0x3f0 [ 775.485956] do_vfs_ioctl+0xcdb/0x12e0 [ 775.489847] ? lock_downgrade+0x720/0x720 [ 775.494010] ? check_preemption_disabled+0x41/0x280 [ 775.499183] ? ioctl_preallocate+0x200/0x200 [ 775.503581] ? __fget+0x356/0x510 [ 775.507026] ? do_dup2+0x450/0x450 [ 775.510575] ? vfs_write+0x393/0x540 [ 775.514276] ? fput+0x2b/0x190 [ 775.517465] ksys_ioctl+0x9b/0xc0 [ 775.520926] __x64_sys_ioctl+0x6f/0xb0 [ 775.524799] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 775.529361] do_syscall_64+0xf9/0x620 [ 775.533148] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 775.538321] RIP: 0033:0x7f03750e1089 [ 775.542034] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 775.561014] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 775.568707] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 executing program [ 775.575956] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 775.583209] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 775.590457] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 775.597712] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 775.607269] block nbd5: Could not allocate knbd recv work queue. [ 775.607681] block nbd3: shutting down sockets [ 775.613698] block nbd0: Could not allocate knbd recv work queue. executing program executing program executing program executing program [ 775.626115] block nbd5: shutting down sockets [ 775.632210] block nbd4: Could not allocate knbd recv work queue. [ 775.632847] block nbd0: shutting down sockets [ 775.639509] block nbd4: shutting down sockets executing program [ 775.681525] block nbd1: Device being setup by another task [ 775.687889] block nbd1: Could not allocate knbd recv work queue. [ 775.695902] block nbd1: shutting down sockets [ 775.704399] FAULT_INJECTION: forcing a failure. [ 775.704399] name failslab, interval 1, probability 0, space 0, times 0 [ 775.715860] CPU: 0 PID: 9596 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 775.722559] FAULT_INJECTION: forcing a failure. [ 775.722559] name failslab, interval 1, probability 0, space 0, times 0 [ 775.723768] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 775.744290] Call Trace: [ 775.746876] dump_stack+0x1fc/0x2ef [ 775.750504] should_fail.cold+0xa/0xf [ 775.754302] ? setup_fault_attr+0x200/0x200 [ 775.758616] ? lock_acquire+0x170/0x3c0 [ 775.762589] __should_failslab+0x115/0x180 [ 775.766821] should_failslab+0x5/0x10 [ 775.770615] kmem_cache_alloc_trace+0x284/0x380 [ 775.775277] ? wait_for_completion_io+0x10/0x10 [ 775.779938] ? kobj_ns_initial+0x90/0x90 [ 775.784001] call_usermodehelper_setup+0x84/0x300 [ 775.788845] kobject_uevent_env+0xe83/0x1480 [ 775.793252] ? nbd_size_update+0x28a/0x660 [ 775.797477] ? queue_work_on+0x11a/0x1f0 [ 775.801543] nbd_start_device+0x811/0xd60 [ 775.805692] nbd_ioctl+0x62c/0xbe0 [ 775.809232] ? _copy_from_user+0xd2/0x130 [ 775.813372] ? nbd_disconnect_and_put+0x190/0x190 [ 775.818212] ? __lock_acquire+0x6de/0x3ff0 [ 775.822438] ? nbd_disconnect_and_put+0x190/0x190 [ 775.827275] blkdev_ioctl+0x5cb/0x1a80 [ 775.831153] ? blkpg_ioctl+0x9d0/0x9d0 [ 775.835031] ? get_pid_task+0xf4/0x190 [ 775.838911] ? mark_held_locks+0xf0/0xf0 [ 775.842966] ? proc_fail_nth_write+0x95/0x1d0 [ 775.847452] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 775.852372] ? __fdget_pos+0x26f/0x310 [ 775.856258] block_ioctl+0xe9/0x130 [ 775.859878] ? blkdev_fallocate+0x3f0/0x3f0 [ 775.864193] do_vfs_ioctl+0xcdb/0x12e0 [ 775.868073] ? lock_downgrade+0x720/0x720 [ 775.872226] ? check_preemption_disabled+0x41/0x280 [ 775.877406] ? ioctl_preallocate+0x200/0x200 [ 775.881810] ? __fget+0x356/0x510 [ 775.885259] ? do_dup2+0x450/0x450 [ 775.888800] ? vfs_write+0x393/0x540 [ 775.892857] ? fput+0x2b/0x190 [ 775.896052] ksys_ioctl+0x9b/0xc0 [ 775.899501] __x64_sys_ioctl+0x6f/0xb0 [ 775.903383] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 775.907960] do_syscall_64+0xf9/0x620 [ 775.911762] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 775.916944] RIP: 0033:0x7f03750e1089 [ 775.920652] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 775.939542] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 775.947252] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 775.954513] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 775.961773] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 775.969036] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 775.976299] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 775.983575] CPU: 1 PID: 9601 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 775.991458] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 776.000804] Call Trace: [ 776.003485] dump_stack+0x1fc/0x2ef [ 776.007103] should_fail.cold+0xa/0xf [ 776.010898] ? setup_fault_attr+0x200/0x200 [ 776.015214] ? lock_acquire+0x170/0x3c0 [ 776.019173] __should_failslab+0x115/0x180 [ 776.023400] should_failslab+0x5/0x10 [ 776.027185] kmem_cache_alloc+0x277/0x370 [ 776.031324] skb_clone+0x151/0x3d0 [ 776.035030] netlink_broadcast_filtered+0x8e5/0xbc0 [ 776.040053] netlink_broadcast+0x35/0x40 [ 776.044126] kobject_uevent_env+0xa56/0x1480 [ 776.048549] ? nbd_size_update+0x28a/0x660 [ 776.052792] ? queue_work_on+0x11a/0x1f0 [ 776.056863] nbd_start_device+0x811/0xd60 [ 776.061035] nbd_ioctl+0x62c/0xbe0 [ 776.064583] ? _copy_from_user+0xd2/0x130 [ 776.068742] ? nbd_disconnect_and_put+0x190/0x190 [ 776.073629] ? __lock_acquire+0x6de/0x3ff0 [ 776.077869] ? nbd_disconnect_and_put+0x190/0x190 executing program [ 776.082719] blkdev_ioctl+0x5cb/0x1a80 [ 776.086627] ? blkpg_ioctl+0x9d0/0x9d0 [ 776.090511] ? get_pid_task+0xf4/0x190 [ 776.094392] ? mark_held_locks+0xf0/0xf0 [ 776.098444] ? proc_fail_nth_write+0x95/0x1d0 [ 776.102932] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 776.104805] block nbd2: shutting down sockets [ 776.107855] ? __fdget_pos+0x26f/0x310 [ 776.107880] block_ioctl+0xe9/0x130 [ 776.107892] ? blkdev_fallocate+0x3f0/0x3f0 [ 776.107907] do_vfs_ioctl+0xcdb/0x12e0 [ 776.107922] ? lock_downgrade+0x720/0x720 [ 776.107939] ? check_preemption_disabled+0x41/0x280 [ 776.137332] ? ioctl_preallocate+0x200/0x200 [ 776.141730] ? __fget+0x356/0x510 [ 776.145178] ? do_dup2+0x450/0x450 [ 776.148703] ? vfs_write+0x393/0x540 [ 776.152403] ? fput+0x2b/0x190 [ 776.155596] ksys_ioctl+0x9b/0xc0 [ 776.159053] __x64_sys_ioctl+0x6f/0xb0 [ 776.162923] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 776.167521] do_syscall_64+0xf9/0x620 [ 776.171325] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 776.176511] RIP: 0033:0x7f03750e1089 [ 776.180209] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 776.199104] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 776.206798] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 776.214065] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 776.221428] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 executing program [ 776.228681] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 776.235937] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 776.244871] block nbd5: shutting down sockets [ 776.251678] FAULT_INJECTION: forcing a failure. [ 776.251678] name failslab, interval 1, probability 0, space 0, times 0 [ 776.263705] FAULT_INJECTION: forcing a failure. [ 776.263705] name failslab, interval 1, probability 0, space 0, times 0 [ 776.275082] FAULT_INJECTION: forcing a failure. [ 776.275082] name failslab, interval 1, probability 0, space 0, times 0 [ 776.281483] block nbd1: Device being setup by another task [ 776.290681] CPU: 0 PID: 9615 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 776.299809] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 776.302746] block nbd1: shutting down sockets [ 776.309157] Call Trace: [ 776.309178] dump_stack+0x1fc/0x2ef [ 776.309196] should_fail.cold+0xa/0xf [ 776.309213] ? setup_fault_attr+0x200/0x200 [ 776.328062] ? lock_acquire+0x170/0x3c0 [ 776.332044] __should_failslab+0x115/0x180 [ 776.336278] should_failslab+0x5/0x10 [ 776.340074] kmem_cache_alloc_trace+0x284/0x380 [ 776.344736] ? wait_for_completion_io+0x10/0x10 [ 776.349400] ? kobj_ns_initial+0x90/0x90 [ 776.353473] call_usermodehelper_setup+0x84/0x300 [ 776.358404] kobject_uevent_env+0xe83/0x1480 [ 776.362808] ? nbd_size_update+0x28a/0x660 [ 776.367034] ? queue_work_on+0x11a/0x1f0 [ 776.371091] nbd_start_device+0x811/0xd60 [ 776.375237] nbd_ioctl+0x62c/0xbe0 [ 776.378786] ? _copy_from_user+0xd2/0x130 [ 776.382934] ? nbd_disconnect_and_put+0x190/0x190 [ 776.387776] ? __lock_acquire+0x6de/0x3ff0 [ 776.392006] ? nbd_disconnect_and_put+0x190/0x190 [ 776.396839] blkdev_ioctl+0x5cb/0x1a80 [ 776.400809] ? blkpg_ioctl+0x9d0/0x9d0 [ 776.404689] ? get_pid_task+0xf4/0x190 [ 776.408570] ? mark_held_locks+0xf0/0xf0 [ 776.412620] ? proc_fail_nth_write+0x95/0x1d0 [ 776.417106] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 776.422027] ? __fdget_pos+0x26f/0x310 [ 776.425910] block_ioctl+0xe9/0x130 [ 776.429526] ? blkdev_fallocate+0x3f0/0x3f0 [ 776.433842] do_vfs_ioctl+0xcdb/0x12e0 [ 776.437724] ? lock_downgrade+0x720/0x720 [ 776.441868] ? check_preemption_disabled+0x41/0x280 [ 776.446877] ? ioctl_preallocate+0x200/0x200 [ 776.451277] ? __fget+0x356/0x510 [ 776.454721] ? do_dup2+0x450/0x450 [ 776.458256] ? vfs_write+0x393/0x540 [ 776.461962] ? fput+0x2b/0x190 [ 776.465151] ksys_ioctl+0x9b/0xc0 [ 776.468603] __x64_sys_ioctl+0x6f/0xb0 [ 776.472575] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 776.477150] do_syscall_64+0xf9/0x620 [ 776.480947] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 776.486129] RIP: 0033:0x7f03750e1089 [ 776.489840] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 776.508733] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 776.516608] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 776.523866] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 776.531123] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 776.538385] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 776.545644] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 776.552921] CPU: 1 PID: 9616 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 776.560807] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 776.570154] Call Trace: [ 776.572744] dump_stack+0x1fc/0x2ef [ 776.576374] should_fail.cold+0xa/0xf [ 776.580176] ? setup_fault_attr+0x200/0x200 [ 776.584495] ? lock_acquire+0x170/0x3c0 [ 776.588472] __should_failslab+0x115/0x180 [ 776.592710] should_failslab+0x5/0x10 [ 776.596515] kmem_cache_alloc_trace+0x284/0x380 [ 776.601186] ? wait_for_completion_io+0x10/0x10 [ 776.605856] ? kobj_ns_initial+0x90/0x90 [ 776.609925] call_usermodehelper_setup+0x84/0x300 [ 776.614772] kobject_uevent_env+0xe83/0x1480 [ 776.619179] ? nbd_size_update+0x28a/0x660 [ 776.623405] ? queue_work_on+0x11a/0x1f0 [ 776.627458] nbd_start_device+0x811/0xd60 [ 776.631613] nbd_ioctl+0x62c/0xbe0 [ 776.635152] ? _copy_from_user+0xd2/0x130 [ 776.639293] ? nbd_disconnect_and_put+0x190/0x190 [ 776.644132] ? __lock_acquire+0x6de/0x3ff0 [ 776.648362] ? nbd_disconnect_and_put+0x190/0x190 [ 776.653200] blkdev_ioctl+0x5cb/0x1a80 [ 776.657080] ? blkpg_ioctl+0x9d0/0x9d0 [ 776.660962] ? get_pid_task+0xf4/0x190 [ 776.664844] ? mark_held_locks+0xf0/0xf0 [ 776.668899] ? proc_fail_nth_write+0x95/0x1d0 [ 776.673388] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 776.678317] ? __fdget_pos+0x26f/0x310 [ 776.682203] block_ioctl+0xe9/0x130 [ 776.685828] ? blkdev_fallocate+0x3f0/0x3f0 [ 776.690139] do_vfs_ioctl+0xcdb/0x12e0 [ 776.694022] ? lock_downgrade+0x720/0x720 [ 776.698166] ? check_preemption_disabled+0x41/0x280 [ 776.703174] ? ioctl_preallocate+0x200/0x200 [ 776.707574] ? __fget+0x356/0x510 [ 776.711024] ? do_dup2+0x450/0x450 [ 776.714554] ? vfs_write+0x393/0x540 [ 776.718264] ? fput+0x2b/0x190 [ 776.721452] ksys_ioctl+0x9b/0xc0 [ 776.724899] __x64_sys_ioctl+0x6f/0xb0 [ 776.728779] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 776.733357] do_syscall_64+0xf9/0x620 [ 776.737154] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 776.742331] RIP: 0033:0x7f03750e1089 [ 776.746036] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 776.764925] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 776.772630] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 776.779888] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 776.787144] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 776.794406] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 776.801667] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 776.808943] CPU: 0 PID: 9617 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 776.812594] block nbd4: shutting down sockets [ 776.817693] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 776.817698] Call Trace: executing program [ 776.817716] dump_stack+0x1fc/0x2ef [ 776.817733] should_fail.cold+0xa/0xf [ 776.822393] block nbd3: shutting down sockets [ 776.831554] ? setup_fault_attr+0x200/0x200 [ 776.831568] ? lock_acquire+0x170/0x3c0 [ 776.831587] __should_failslab+0x115/0x180 [ 776.831604] should_failslab+0x5/0x10 [ 776.862322] kmem_cache_alloc_trace+0x284/0x380 [ 776.866984] ? wait_for_completion_io+0x10/0x10 [ 776.871648] ? kobj_ns_initial+0x90/0x90 [ 776.875695] call_usermodehelper_setup+0x84/0x300 [ 776.880523] kobject_uevent_env+0xe83/0x1480 [ 776.884918] ? nbd_size_update+0x28a/0x660 [ 776.889134] ? queue_work_on+0x11a/0x1f0 [ 776.893179] nbd_start_device+0x811/0xd60 [ 776.897316] nbd_ioctl+0x62c/0xbe0 [ 776.900841] ? _copy_from_user+0xd2/0x130 [ 776.904972] ? nbd_disconnect_and_put+0x190/0x190 [ 776.909802] ? __lock_acquire+0x6de/0x3ff0 [ 776.914033] ? nbd_disconnect_and_put+0x190/0x190 [ 776.918872] blkdev_ioctl+0x5cb/0x1a80 [ 776.922743] ? blkpg_ioctl+0x9d0/0x9d0 [ 776.926613] ? get_pid_task+0xf4/0x190 [ 776.930486] ? mark_held_locks+0xf0/0xf0 [ 776.934528] ? proc_fail_nth_write+0x95/0x1d0 [ 776.939008] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 776.943927] ? __fdget_pos+0x26f/0x310 [ 776.947808] block_ioctl+0xe9/0x130 [ 776.951426] ? blkdev_fallocate+0x3f0/0x3f0 [ 776.955731] do_vfs_ioctl+0xcdb/0x12e0 [ 776.959605] ? lock_downgrade+0x720/0x720 [ 776.963734] ? check_preemption_disabled+0x41/0x280 [ 776.968733] ? ioctl_preallocate+0x200/0x200 [ 776.973134] ? __fget+0x356/0x510 [ 776.976581] ? do_dup2+0x450/0x450 [ 776.980099] ? vfs_write+0x393/0x540 [ 776.983798] ? fput+0x2b/0x190 [ 776.986976] ksys_ioctl+0x9b/0xc0 [ 776.990418] __x64_sys_ioctl+0x6f/0xb0 [ 776.994295] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 776.998862] do_syscall_64+0xf9/0x620 [ 777.002650] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 777.007820] RIP: 0033:0x7f03750e1089 [ 777.011514] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 executing program executing program executing program [ 777.030570] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 777.038260] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 777.045511] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 777.052763] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 777.060011] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 777.067269] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 777.079238] block nbd0: shutting down sockets executing program [ 777.091519] block nbd5: Device being setup by another task [ 777.098883] block nbd5: Could not allocate knbd recv work queue. [ 777.101270] block nbd2: Device being setup by another task [ 777.107212] block nbd5: shutting down sockets [ 777.111036] block nbd2: Could not allocate knbd recv work queue. [ 777.124701] block nbd2: shutting down sockets [ 777.131334] block nbd1: Device being setup by another task executing program executing program [ 777.137743] block nbd1: Could not allocate knbd recv work queue. [ 777.146092] block nbd1: shutting down sockets [ 777.162918] FAULT_INJECTION: forcing a failure. [ 777.162918] name failslab, interval 1, probability 0, space 0, times 0 [ 777.162943] FAULT_INJECTION: forcing a failure. [ 777.162943] name failslab, interval 1, probability 0, space 0, times 0 [ 777.174732] CPU: 0 PID: 9644 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 777.193444] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 777.202784] Call Trace: [ 777.205387] dump_stack+0x1fc/0x2ef [ 777.209019] should_fail.cold+0xa/0xf [ 777.212817] ? setup_fault_attr+0x200/0x200 [ 777.217139] ? lock_acquire+0x170/0x3c0 [ 777.221151] __should_failslab+0x115/0x180 [ 777.225403] should_failslab+0x5/0x10 [ 777.229202] kmem_cache_alloc_trace+0x284/0x380 [ 777.233880] ? wait_for_completion_io+0x10/0x10 [ 777.238545] ? kobj_ns_initial+0x90/0x90 [ 777.242606] call_usermodehelper_setup+0x84/0x300 [ 777.247454] kobject_uevent_env+0xe83/0x1480 [ 777.251867] ? nbd_size_update+0x28a/0x660 [ 777.256095] ? queue_work_on+0x11a/0x1f0 [ 777.260152] nbd_start_device+0x811/0xd60 [ 777.264309] nbd_ioctl+0x62c/0xbe0 [ 777.267861] ? _copy_from_user+0xd2/0x130 [ 777.272012] ? nbd_disconnect_and_put+0x190/0x190 [ 777.276858] ? __lock_acquire+0x6de/0x3ff0 [ 777.281084] ? nbd_disconnect_and_put+0x190/0x190 [ 777.285936] blkdev_ioctl+0x5cb/0x1a80 [ 777.289825] ? blkpg_ioctl+0x9d0/0x9d0 [ 777.293715] ? get_pid_task+0xf4/0x190 [ 777.297600] ? mark_held_locks+0xf0/0xf0 [ 777.301662] ? proc_fail_nth_write+0x95/0x1d0 [ 777.306149] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 777.311068] ? __fdget_pos+0x26f/0x310 [ 777.314969] block_ioctl+0xe9/0x130 [ 777.318592] ? blkdev_fallocate+0x3f0/0x3f0 [ 777.323003] do_vfs_ioctl+0xcdb/0x12e0 [ 777.326892] ? lock_downgrade+0x720/0x720 [ 777.331033] ? check_preemption_disabled+0x41/0x280 [ 777.336043] ? ioctl_preallocate+0x200/0x200 [ 777.340458] ? __fget+0x356/0x510 [ 777.343906] ? do_dup2+0x450/0x450 [ 777.347438] ? vfs_write+0x393/0x540 [ 777.351145] ? fput+0x2b/0x190 [ 777.354649] ksys_ioctl+0x9b/0xc0 [ 777.358104] __x64_sys_ioctl+0x6f/0xb0 [ 777.361986] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 777.366562] do_syscall_64+0xf9/0x620 [ 777.370371] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 777.375563] RIP: 0033:0x7f03750e1089 [ 777.379271] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 777.398169] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 777.405868] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 777.413172] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 777.420435] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 777.427702] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 777.434967] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 777.442268] CPU: 1 PID: 9641 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 777.450155] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 777.459511] Call Trace: [ 777.462102] dump_stack+0x1fc/0x2ef [ 777.465737] should_fail.cold+0xa/0xf [ 777.469541] ? setup_fault_attr+0x200/0x200 [ 777.473866] ? lock_acquire+0x170/0x3c0 [ 777.477853] __should_failslab+0x115/0x180 [ 777.482102] should_failslab+0x5/0x10 [ 777.485891] kmem_cache_alloc+0x277/0x370 [ 777.490025] skb_clone+0x151/0x3d0 [ 777.493656] netlink_broadcast_filtered+0x8e5/0xbc0 [ 777.498675] netlink_broadcast+0x35/0x40 [ 777.502731] kobject_uevent_env+0xa56/0x1480 [ 777.507128] ? nbd_size_update+0x28a/0x660 [ 777.511347] ? queue_work_on+0x11a/0x1f0 [ 777.515485] nbd_start_device+0x811/0xd60 [ 777.519623] nbd_ioctl+0x62c/0xbe0 [ 777.523160] ? _copy_from_user+0xd2/0x130 [ 777.527292] ? nbd_disconnect_and_put+0x190/0x190 [ 777.532121] ? __lock_acquire+0x6de/0x3ff0 [ 777.536341] ? nbd_disconnect_and_put+0x190/0x190 [ 777.541180] blkdev_ioctl+0x5cb/0x1a80 [ 777.545067] ? blkpg_ioctl+0x9d0/0x9d0 [ 777.548953] ? get_pid_task+0xf4/0x190 [ 777.552829] ? mark_held_locks+0xf0/0xf0 [ 777.556881] ? proc_fail_nth_write+0x95/0x1d0 [ 777.561359] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 777.566282] ? __fdget_pos+0x26f/0x310 [ 777.568788] block nbd0: shutting down sockets [ 777.570171] block_ioctl+0xe9/0x130 [ 777.570184] ? blkdev_fallocate+0x3f0/0x3f0 [ 777.582587] do_vfs_ioctl+0xcdb/0x12e0 [ 777.586479] ? lock_downgrade+0x720/0x720 [ 777.590628] ? check_preemption_disabled+0x41/0x280 [ 777.595640] ? ioctl_preallocate+0x200/0x200 [ 777.600032] ? __fget+0x356/0x510 [ 777.603472] ? do_dup2+0x450/0x450 [ 777.606995] ? vfs_write+0x393/0x540 [ 777.610691] ? fput+0x2b/0x190 [ 777.613867] ksys_ioctl+0x9b/0xc0 [ 777.617307] __x64_sys_ioctl+0x6f/0xb0 [ 777.621188] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 777.625760] do_syscall_64+0xf9/0x620 [ 777.629547] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 777.634718] RIP: 0033:0x7f03750e1089 [ 777.638416] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 777.657306] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 777.664997] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 777.672250] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 777.679502] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 777.686752] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc executing program executing program executing program [ 777.694002] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 777.703841] block nbd5: shutting down sockets [ 777.709079] block nbd3: shutting down sockets [ 777.709137] FAULT_INJECTION: forcing a failure. [ 777.709137] name failslab, interval 1, probability 0, space 0, times 0 [ 777.727382] CPU: 0 PID: 9660 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 777.735279] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 777.744613] Call Trace: [ 777.747188] dump_stack+0x1fc/0x2ef [ 777.750803] should_fail.cold+0xa/0xf [ 777.754592] ? setup_fault_attr+0x200/0x200 [ 777.758911] ? lock_acquire+0x170/0x3c0 [ 777.762887] __should_failslab+0x115/0x180 [ 777.767108] should_failslab+0x5/0x10 [ 777.770896] kmem_cache_alloc+0x277/0x370 [ 777.775032] skb_clone+0x151/0x3d0 [ 777.778573] netlink_broadcast_filtered+0x8e5/0xbc0 [ 777.783602] netlink_broadcast+0x35/0x40 [ 777.787659] kobject_uevent_env+0xa56/0x1480 [ 777.792055] ? nbd_size_update+0x28a/0x660 [ 777.796275] ? queue_work_on+0x11a/0x1f0 [ 777.800337] nbd_start_device+0x811/0xd60 [ 777.804488] nbd_ioctl+0x62c/0xbe0 [ 777.808030] ? _copy_from_user+0xd2/0x130 [ 777.812180] ? nbd_disconnect_and_put+0x190/0x190 [ 777.817017] ? __lock_acquire+0x6de/0x3ff0 [ 777.821238] ? nbd_disconnect_and_put+0x190/0x190 [ 777.826068] blkdev_ioctl+0x5cb/0x1a80 [ 777.829951] ? blkpg_ioctl+0x9d0/0x9d0 [ 777.833833] ? get_pid_task+0xf4/0x190 [ 777.837706] ? mark_held_locks+0xf0/0xf0 [ 777.841747] ? proc_fail_nth_write+0x95/0x1d0 [ 777.846225] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 777.851143] ? __fdget_pos+0x26f/0x310 [ 777.855024] block_ioctl+0xe9/0x130 [ 777.858632] ? blkdev_fallocate+0x3f0/0x3f0 [ 777.862934] do_vfs_ioctl+0xcdb/0x12e0 [ 777.866804] ? lock_downgrade+0x720/0x720 [ 777.870934] ? check_preemption_disabled+0x41/0x280 [ 777.875940] ? ioctl_preallocate+0x200/0x200 [ 777.880355] ? __fget+0x356/0x510 [ 777.883799] ? do_dup2+0x450/0x450 [ 777.887328] ? vfs_write+0x393/0x540 [ 777.891032] ? fput+0x2b/0x190 [ 777.894208] ksys_ioctl+0x9b/0xc0 [ 777.897647] __x64_sys_ioctl+0x6f/0xb0 [ 777.901518] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 777.906089] do_syscall_64+0xf9/0x620 [ 777.909887] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 777.915061] RIP: 0033:0x7f03750e1089 [ 777.918757] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 777.937642] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 777.945336] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 777.952587] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 777.959841] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 777.967114] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 777.974374] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 777.983110] block nbd1: Device being setup by another task [ 777.988951] block nbd1: Could not allocate knbd recv work queue. executing program executing program executing program executing program [ 777.991174] block nbd2: Could not allocate knbd recv work queue. [ 777.998845] block nbd1: shutting down sockets [ 778.004639] block nbd2: shutting down sockets [ 778.014900] block nbd4: shutting down sockets [ 778.031512] block nbd3: Device being setup by another task [ 778.032256] block nbd0: Device being setup by another task executing program executing program [ 778.043031] block nbd3: Could not allocate knbd recv work queue. [ 778.047543] block nbd0: Could not allocate knbd recv work queue. [ 778.050585] block nbd3: shutting down sockets [ 778.060991] block nbd0: shutting down sockets [ 778.068585] FAULT_INJECTION: forcing a failure. [ 778.068585] name failslab, interval 1, probability 0, space 0, times 0 [ 778.081485] CPU: 0 PID: 9678 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 778.089369] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 778.098709] Call Trace: [ 778.101290] dump_stack+0x1fc/0x2ef [ 778.104910] should_fail.cold+0xa/0xf [ 778.108702] ? setup_fault_attr+0x200/0x200 [ 778.113022] ? lock_acquire+0x170/0x3c0 [ 778.117009] __should_failslab+0x115/0x180 [ 778.121232] should_failslab+0x5/0x10 [ 778.125020] kmem_cache_alloc+0x277/0x370 [ 778.129155] skb_clone+0x151/0x3d0 [ 778.132682] netlink_broadcast_filtered+0x8e5/0xbc0 [ 778.137694] netlink_broadcast+0x35/0x40 [ 778.141741] kobject_uevent_env+0xa56/0x1480 [ 778.146142] ? nbd_size_update+0x28a/0x660 [ 778.150362] ? queue_work_on+0x11a/0x1f0 [ 778.154415] nbd_start_device+0x811/0xd60 [ 778.158552] nbd_ioctl+0x62c/0xbe0 [ 778.162091] ? _copy_from_user+0xd2/0x130 [ 778.166321] ? nbd_disconnect_and_put+0x190/0x190 [ 778.171166] ? __lock_acquire+0x6de/0x3ff0 [ 778.175387] ? nbd_disconnect_and_put+0x190/0x190 [ 778.180216] blkdev_ioctl+0x5cb/0x1a80 [ 778.184090] ? blkpg_ioctl+0x9d0/0x9d0 [ 778.187976] ? get_pid_task+0xf4/0x190 [ 778.191859] ? mark_held_locks+0xf0/0xf0 [ 778.195993] ? proc_fail_nth_write+0x95/0x1d0 [ 778.200476] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 778.205388] ? __fdget_pos+0x26f/0x310 [ 778.209272] block_ioctl+0xe9/0x130 [ 778.212890] ? blkdev_fallocate+0x3f0/0x3f0 [ 778.217199] do_vfs_ioctl+0xcdb/0x12e0 [ 778.221069] ? lock_downgrade+0x720/0x720 [ 778.225198] ? check_preemption_disabled+0x41/0x280 [ 778.230197] ? ioctl_preallocate+0x200/0x200 [ 778.234591] ? __fget+0x356/0x510 [ 778.238044] ? do_dup2+0x450/0x450 [ 778.241577] ? vfs_write+0x393/0x540 [ 778.245300] ? fput+0x2b/0x190 [ 778.248481] ksys_ioctl+0x9b/0xc0 [ 778.251919] __x64_sys_ioctl+0x6f/0xb0 [ 778.255789] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 778.260362] do_syscall_64+0xf9/0x620 [ 778.264159] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 778.269332] RIP: 0033:0x7f03750e1089 [ 778.273029] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 778.291910] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 778.299601] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 778.306852] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 778.314110] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 778.321379] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 778.328729] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 778.339728] FAULT_INJECTION: forcing a failure. [ 778.339728] name failslab, interval 1, probability 0, space 0, times 0 [ 778.351844] CPU: 0 PID: 9685 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 778.359728] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 778.369065] Call Trace: [ 778.371642] dump_stack+0x1fc/0x2ef [ 778.375252] should_fail.cold+0xa/0xf [ 778.379039] ? setup_fault_attr+0x200/0x200 [ 778.383343] ? lock_acquire+0x170/0x3c0 [ 778.387302] __should_failslab+0x115/0x180 [ 778.391520] should_failslab+0x5/0x10 [ 778.395302] kmem_cache_alloc+0x277/0x370 [ 778.399434] skb_clone+0x151/0x3d0 [ 778.403089] netlink_broadcast_filtered+0x8e5/0xbc0 [ 778.408098] netlink_broadcast+0x35/0x40 [ 778.412147] kobject_uevent_env+0xa56/0x1480 [ 778.416546] ? nbd_size_update+0x28a/0x660 [ 778.420770] ? queue_work_on+0x11a/0x1f0 [ 778.424819] nbd_start_device+0x811/0xd60 [ 778.428956] nbd_ioctl+0x62c/0xbe0 [ 778.432481] ? _copy_from_user+0xd2/0x130 [ 778.436617] ? nbd_disconnect_and_put+0x190/0x190 [ 778.441449] ? __lock_acquire+0x6de/0x3ff0 [ 778.445668] ? nbd_disconnect_and_put+0x190/0x190 [ 778.450494] blkdev_ioctl+0x5cb/0x1a80 [ 778.454363] ? blkpg_ioctl+0x9d0/0x9d0 [ 778.458233] ? get_pid_task+0xf4/0x190 [ 778.462104] ? mark_held_locks+0xf0/0xf0 [ 778.466145] ? proc_fail_nth_write+0x95/0x1d0 [ 778.470622] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 778.475533] ? __fdget_pos+0x26f/0x310 [ 778.479410] block_ioctl+0xe9/0x130 [ 778.483018] ? blkdev_fallocate+0x3f0/0x3f0 [ 778.487322] do_vfs_ioctl+0xcdb/0x12e0 [ 778.491189] ? lock_downgrade+0x720/0x720 [ 778.495322] ? check_preemption_disabled+0x41/0x280 [ 778.500335] ? ioctl_preallocate+0x200/0x200 [ 778.504725] ? __fget+0x356/0x510 [ 778.508160] ? do_dup2+0x450/0x450 [ 778.511680] ? vfs_write+0x393/0x540 [ 778.515375] ? fput+0x2b/0x190 [ 778.518552] ksys_ioctl+0x9b/0xc0 [ 778.521988] __x64_sys_ioctl+0x6f/0xb0 [ 778.525861] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 778.530423] do_syscall_64+0xf9/0x620 [ 778.534208] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 778.539380] RIP: 0033:0x7f03750e1089 [ 778.543074] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 778.562046] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 778.569734] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 778.576984] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 778.584233] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 778.591482] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 778.598735] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 778.607222] FAULT_INJECTION: forcing a failure. [ 778.607222] name failslab, interval 1, probability 0, space 0, times 0 [ 778.619031] CPU: 1 PID: 9683 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 778.626911] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 778.636261] Call Trace: [ 778.638847] dump_stack+0x1fc/0x2ef [ 778.642467] should_fail.cold+0xa/0xf [ 778.646264] ? setup_fault_attr+0x200/0x200 [ 778.650576] ? lock_acquire+0x170/0x3c0 [ 778.654537] __should_failslab+0x115/0x180 [ 778.658758] should_failslab+0x5/0x10 [ 778.662542] kmem_cache_alloc+0x277/0x370 [ 778.666683] skb_clone+0x151/0x3d0 [ 778.670219] netlink_broadcast_filtered+0x8e5/0xbc0 [ 778.675234] netlink_broadcast+0x35/0x40 [ 778.679284] kobject_uevent_env+0xa56/0x1480 [ 778.683683] ? nbd_size_update+0x28a/0x660 [ 778.687900] ? queue_work_on+0x11a/0x1f0 [ 778.691946] nbd_start_device+0x811/0xd60 [ 778.696096] nbd_ioctl+0x62c/0xbe0 [ 778.699631] ? _copy_from_user+0xd2/0x130 [ 778.703762] ? nbd_disconnect_and_put+0x190/0x190 [ 778.708592] ? __lock_acquire+0x6de/0x3ff0 [ 778.712818] ? nbd_disconnect_and_put+0x190/0x190 [ 778.713198] block nbd5: shutting down sockets [ 778.717656] blkdev_ioctl+0x5cb/0x1a80 [ 778.717671] ? blkpg_ioctl+0x9d0/0x9d0 [ 778.717686] ? get_pid_task+0xf4/0x190 [ 778.717702] ? mark_held_locks+0xf0/0xf0 [ 778.722564] block nbd4: shutting down sockets [ 778.726053] ? proc_fail_nth_write+0x95/0x1d0 executing program executing program [ 778.726068] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 778.726082] ? __fdget_pos+0x26f/0x310 [ 778.726105] block_ioctl+0xe9/0x130 [ 778.726116] ? blkdev_fallocate+0x3f0/0x3f0 [ 778.726129] do_vfs_ioctl+0xcdb/0x12e0 [ 778.767465] ? lock_downgrade+0x720/0x720 [ 778.771620] ? check_preemption_disabled+0x41/0x280 [ 778.776636] ? ioctl_preallocate+0x200/0x200 [ 778.781034] ? __fget+0x356/0x510 [ 778.784472] ? do_dup2+0x450/0x450 [ 778.788007] ? vfs_write+0x393/0x540 [ 778.791712] ? fput+0x2b/0x190 [ 778.794890] ksys_ioctl+0x9b/0xc0 [ 778.798371] __x64_sys_ioctl+0x6f/0xb0 [ 778.802253] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 778.806831] do_syscall_64+0xf9/0x620 [ 778.810624] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 778.815805] RIP: 0033:0x7f03750e1089 [ 778.819510] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 778.838396] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 778.846090] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 778.853352] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 778.860614] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 778.867954] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 778.875211] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 778.884122] block nbd3: Could not allocate knbd recv work queue. [ 778.891778] FAULT_INJECTION: forcing a failure. [ 778.891778] name failslab, interval 1, probability 0, space 0, times 0 [ 778.891814] block nbd1: shutting down sockets [ 778.907586] CPU: 0 PID: 9699 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 778.908174] block nbd3: shutting down sockets [ 778.915486] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 778.915491] Call Trace: [ 778.915510] dump_stack+0x1fc/0x2ef [ 778.915527] should_fail.cold+0xa/0xf [ 778.915544] ? setup_fault_attr+0x200/0x200 [ 778.915558] ? lock_acquire+0x170/0x3c0 [ 778.915577] __should_failslab+0x115/0x180 [ 778.915594] should_failslab+0x5/0x10 [ 778.915606] kmem_cache_alloc+0x277/0x370 [ 778.915621] skb_clone+0x151/0x3d0 [ 778.915636] netlink_broadcast_filtered+0x8e5/0xbc0 [ 778.915656] netlink_broadcast+0x35/0x40 [ 778.915674] kobject_uevent_env+0xa56/0x1480 [ 778.920275] block nbd0: Device being setup by another task [ 778.929713] ? nbd_size_update+0x28a/0x660 [ 778.929726] ? queue_work_on+0x11a/0x1f0 [ 778.929742] nbd_start_device+0x811/0xd60 [ 778.935718] block nbd0: shutting down sockets [ 778.935963] nbd_ioctl+0x62c/0xbe0 [ 779.003000] ? _copy_from_user+0xd2/0x130 [ 779.007133] ? nbd_disconnect_and_put+0x190/0x190 [ 779.011964] ? __lock_acquire+0x6de/0x3ff0 [ 779.016182] ? nbd_disconnect_and_put+0x190/0x190 [ 779.021004] blkdev_ioctl+0x5cb/0x1a80 [ 779.024871] ? blkpg_ioctl+0x9d0/0x9d0 [ 779.028743] ? get_pid_task+0xf4/0x190 [ 779.032612] ? mark_held_locks+0xf0/0xf0 [ 779.036657] ? proc_fail_nth_write+0x95/0x1d0 [ 779.041133] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 779.046045] ? __fdget_pos+0x26f/0x310 [ 779.049920] block_ioctl+0xe9/0x130 [ 779.053527] ? blkdev_fallocate+0x3f0/0x3f0 [ 779.057832] do_vfs_ioctl+0xcdb/0x12e0 [ 779.061703] ? lock_downgrade+0x720/0x720 [ 779.065970] ? check_preemption_disabled+0x41/0x280 [ 779.070972] ? ioctl_preallocate+0x200/0x200 [ 779.075370] ? __fget+0x356/0x510 [ 779.078821] ? do_dup2+0x450/0x450 [ 779.082342] ? vfs_write+0x393/0x540 [ 779.086039] ? fput+0x2b/0x190 [ 779.089218] ksys_ioctl+0x9b/0xc0 [ 779.092657] __x64_sys_ioctl+0x6f/0xb0 [ 779.096526] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 779.101099] do_syscall_64+0xf9/0x620 [ 779.104884] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 779.110142] RIP: 0033:0x7f03750e1089 [ 779.113841] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 779.132722] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 779.140411] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 executing program executing program executing program executing program [ 779.147661] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 779.154911] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 779.162160] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 779.169409] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 779.181621] block nbd2: shutting down sockets [ 779.211203] block nbd4: Device being setup by another task [ 779.212118] block nbd5: Device being setup by another task [ 779.252475] FAULT_INJECTION: forcing a failure. [ 779.252475] name failslab, interval 1, probability 0, space 0, times 0 [ 779.263780] CPU: 0 PID: 9710 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 779.271660] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 779.273707] FAULT_INJECTION: forcing a failure. [ 779.273707] name failslab, interval 1, probability 0, space 0, times 0 [ 779.281006] Call Trace: [ 779.281028] dump_stack+0x1fc/0x2ef [ 779.281050] should_fail.cold+0xa/0xf [ 779.302180] ? setup_fault_attr+0x200/0x200 [ 779.306507] ? lock_acquire+0x170/0x3c0 [ 779.310489] __should_failslab+0x115/0x180 [ 779.314724] should_failslab+0x5/0x10 [ 779.318519] __kmalloc_track_caller+0x2a6/0x3c0 [ 779.323188] ? kstrdup_const+0x53/0x80 [ 779.327080] kstrdup+0x36/0x70 [ 779.330283] kstrdup_const+0x53/0x80 [ 779.333997] __kernfs_new_node+0x9b/0x680 [ 779.338137] ? kfree+0xcc/0x210 [ 779.341411] ? kobject_add+0x10d/0x1c0 [ 779.345359] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 779.350111] ? nbd_start_device+0x1f2/0xd60 [ 779.354425] ? nbd_ioctl+0x62c/0xbe0 [ 779.358133] ? blkdev_ioctl+0x5cb/0x1a80 [ 779.362186] ? do_vfs_ioctl+0xcdb/0x12e0 [ 779.366244] ? __x64_sys_ioctl+0x6f/0xb0 [ 779.370300] ? do_syscall_64+0xf9/0x620 [ 779.374266] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 779.379624] ? debug_check_no_obj_freed+0x201/0x490 [ 779.384640] kernfs_create_dir_ns+0x9e/0x230 [ 779.389040] sysfs_create_dir_ns+0x127/0x280 [ 779.393438] ? sysfs_create_mount_point+0xb0/0xb0 [ 779.398278] ? mark_held_locks+0xa6/0xf0 [ 779.402328] ? kfree+0x110/0x210 [ 779.405687] ? kfree_const+0x51/0x60 [ 779.409398] kobject_add_internal+0x2a5/0x9c0 [ 779.413891] kobject_add+0x150/0x1c0 [ 779.417599] ? kset_create_and_add+0x1a0/0x1a0 [ 779.422171] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 779.426835] ? lock_downgrade+0x720/0x720 [ 779.430973] ? kernfs_put.part.0+0x225/0x590 [ 779.432786] block nbd3: Could not allocate knbd recv work queue. [ 779.435385] blk_mq_register_hctx+0x23c/0x2c0 [ 779.435404] blk_mq_sysfs_register+0x143/0x1c0 executing program [ 779.435421] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 779.435437] ? workqueue_sysfs_register+0x391/0x3e0 [ 779.435454] ? blk_mq_init_queue+0xa0/0xa0 [ 779.448338] block nbd3: shutting down sockets [ 779.450635] nbd_start_device+0x1f2/0xd60 [ 779.450652] ? security_capable+0x8f/0xc0 [ 779.450672] nbd_ioctl+0x62c/0xbe0 [ 779.450688] ? _copy_from_user+0xd2/0x130 [ 779.485306] ? nbd_disconnect_and_put+0x190/0x190 [ 779.490169] ? __lock_acquire+0x6de/0x3ff0 [ 779.494416] ? nbd_disconnect_and_put+0x190/0x190 [ 779.499255] blkdev_ioctl+0x5cb/0x1a80 [ 779.503138] ? blkpg_ioctl+0x9d0/0x9d0 [ 779.507021] ? get_pid_task+0xf4/0x190 [ 779.510905] ? mark_held_locks+0xf0/0xf0 [ 779.514955] ? proc_fail_nth_write+0x95/0x1d0 [ 779.519451] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 779.524375] ? __fdget_pos+0x26f/0x310 [ 779.528267] block_ioctl+0xe9/0x130 [ 779.531887] ? blkdev_fallocate+0x3f0/0x3f0 [ 779.536203] do_vfs_ioctl+0xcdb/0x12e0 [ 779.540088] ? lock_downgrade+0x720/0x720 [ 779.544240] ? check_preemption_disabled+0x41/0x280 [ 779.549254] ? ioctl_preallocate+0x200/0x200 [ 779.553661] ? __fget+0x356/0x510 [ 779.557107] ? do_dup2+0x450/0x450 [ 779.560642] ? vfs_write+0x393/0x540 [ 779.564359] ? fput+0x2b/0x190 [ 779.567549] ksys_ioctl+0x9b/0xc0 [ 779.570996] __x64_sys_ioctl+0x6f/0xb0 [ 779.574881] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 779.579469] do_syscall_64+0xf9/0x620 [ 779.583264] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 779.588502] RIP: 0033:0x7f03750e1089 [ 779.592248] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 779.611140] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 779.618841] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 779.626098] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 779.633359] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 779.640621] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 779.647885] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 779.655164] CPU: 1 PID: 9719 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 779.656903] kobject_add_internal failed for cpu1 (error: -12 parent: 0) [ 779.663046] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 779.663051] Call Trace: [ 779.663068] dump_stack+0x1fc/0x2ef [ 779.663086] should_fail.cold+0xa/0xf [ 779.663102] ? setup_fault_attr+0x200/0x200 [ 779.663119] ? lock_acquire+0x170/0x3c0 [ 779.697401] __should_failslab+0x115/0x180 [ 779.701633] should_failslab+0x5/0x10 [ 779.705426] kmem_cache_alloc+0x277/0x370 [ 779.709559] skb_clone+0x151/0x3d0 [ 779.713086] netlink_broadcast_filtered+0x8e5/0xbc0 [ 779.718088] netlink_broadcast+0x35/0x40 [ 779.722137] kobject_uevent_env+0xa56/0x1480 [ 779.726530] ? nbd_size_update+0x28a/0x660 [ 779.730747] ? queue_work_on+0x11a/0x1f0 [ 779.734791] nbd_start_device+0x811/0xd60 [ 779.738934] nbd_ioctl+0x62c/0xbe0 [ 779.742460] ? _copy_from_user+0xd2/0x130 [ 779.746599] ? nbd_disconnect_and_put+0x190/0x190 [ 779.751429] ? __lock_acquire+0x6de/0x3ff0 [ 779.755648] ? nbd_disconnect_and_put+0x190/0x190 [ 779.760474] blkdev_ioctl+0x5cb/0x1a80 [ 779.764348] ? blkpg_ioctl+0x9d0/0x9d0 [ 779.768224] ? get_pid_task+0xf4/0x190 [ 779.772095] ? mark_held_locks+0xf0/0xf0 [ 779.776137] ? proc_fail_nth_write+0x95/0x1d0 [ 779.780614] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 779.785526] ? __fdget_pos+0x26f/0x310 [ 779.789397] block_ioctl+0xe9/0x130 [ 779.793002] ? blkdev_fallocate+0x3f0/0x3f0 [ 779.797305] do_vfs_ioctl+0xcdb/0x12e0 [ 779.801190] ? lock_downgrade+0x720/0x720 [ 779.805323] ? check_preemption_disabled+0x41/0x280 [ 779.810319] ? ioctl_preallocate+0x200/0x200 [ 779.814720] ? __fget+0x356/0x510 [ 779.818159] ? do_dup2+0x450/0x450 [ 779.821682] ? vfs_write+0x393/0x540 [ 779.825377] ? fput+0x2b/0x190 [ 779.828557] ksys_ioctl+0x9b/0xc0 [ 779.831991] __x64_sys_ioctl+0x6f/0xb0 [ 779.835861] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 779.840423] do_syscall_64+0xf9/0x620 [ 779.844215] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 779.849388] RIP: 0033:0x7f03750e1089 [ 779.853082] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 779.873006] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 779.880692] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 779.887943] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 779.895193] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 779.902446] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 779.909699] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 779.917994] FAULT_INJECTION: forcing a failure. [ 779.917994] name failslab, interval 1, probability 0, space 0, times 0 [ 779.923011] FAULT_INJECTION: forcing a failure. [ 779.923011] name failslab, interval 1, probability 0, space 0, times 0 [ 779.929628] block nbd0: shutting down sockets [ 779.945169] CPU: 1 PID: 9717 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 779.953055] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 779.962403] Call Trace: [ 779.964987] dump_stack+0x1fc/0x2ef [ 779.968620] should_fail.cold+0xa/0xf [ 779.972415] ? setup_fault_attr+0x200/0x200 [ 779.976728] ? lock_acquire+0x170/0x3c0 [ 779.980697] __should_failslab+0x115/0x180 [ 779.984925] should_failslab+0x5/0x10 [ 779.988716] kmem_cache_alloc+0x277/0x370 [ 779.992859] skb_clone+0x151/0x3d0 [ 779.996394] netlink_broadcast_filtered+0x8e5/0xbc0 [ 780.001411] netlink_broadcast+0x35/0x40 [ 780.005469] kobject_uevent_env+0xa56/0x1480 [ 780.009870] ? nbd_size_update+0x28a/0x660 [ 780.014096] ? queue_work_on+0x11a/0x1f0 [ 780.018148] nbd_start_device+0x811/0xd60 [ 780.022293] nbd_ioctl+0x62c/0xbe0 [ 780.025824] ? _copy_from_user+0xd2/0x130 [ 780.029965] ? nbd_disconnect_and_put+0x190/0x190 [ 780.034804] ? __lock_acquire+0x6de/0x3ff0 [ 780.039030] ? nbd_disconnect_and_put+0x190/0x190 [ 780.043951] blkdev_ioctl+0x5cb/0x1a80 [ 780.047828] ? blkpg_ioctl+0x9d0/0x9d0 [ 780.051711] ? get_pid_task+0xf4/0x190 [ 780.055598] ? mark_held_locks+0xf0/0xf0 [ 780.059652] ? proc_fail_nth_write+0x95/0x1d0 [ 780.064153] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 780.069088] ? __fdget_pos+0x26f/0x310 [ 780.072984] block_ioctl+0xe9/0x130 [ 780.076603] ? blkdev_fallocate+0x3f0/0x3f0 [ 780.080919] do_vfs_ioctl+0xcdb/0x12e0 [ 780.084796] ? lock_downgrade+0x720/0x720 [ 780.088934] ? check_preemption_disabled+0x41/0x280 [ 780.093939] ? ioctl_preallocate+0x200/0x200 [ 780.098340] ? __fget+0x356/0x510 [ 780.101784] ? do_dup2+0x450/0x450 [ 780.105314] ? vfs_write+0x393/0x540 [ 780.109021] ? fput+0x2b/0x190 [ 780.112212] ksys_ioctl+0x9b/0xc0 [ 780.115660] __x64_sys_ioctl+0x6f/0xb0 [ 780.119541] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 780.124115] do_syscall_64+0xf9/0x620 [ 780.127911] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 780.133089] RIP: 0033:0x7f03750e1089 [ 780.136793] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 780.155680] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 780.163376] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 780.170632] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 780.177890] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 780.185162] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 780.192418] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 780.199695] CPU: 0 PID: 9709 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 780.200857] block nbd1: shutting down sockets [ 780.207574] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 780.207579] Call Trace: [ 780.207597] dump_stack+0x1fc/0x2ef [ 780.207615] should_fail.cold+0xa/0xf [ 780.207633] ? setup_fault_attr+0x200/0x200 [ 780.207648] ? lock_acquire+0x170/0x3c0 [ 780.207669] __should_failslab+0x115/0x180 [ 780.232901] block nbd4: shutting down sockets [ 780.235767] should_failslab+0x5/0x10 [ 780.235782] kmem_cache_alloc+0x277/0x370 executing program [ 780.235801] __kernfs_new_node+0xd2/0x680 [ 780.235813] ? kfree+0xcc/0x210 [ 780.235827] ? kobject_add+0x10d/0x1c0 [ 780.235842] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 780.243612] FAULT_INJECTION: forcing a failure. [ 780.243612] name failslab, interval 1, probability 0, space 0, times 0 [ 780.244024] ? nbd_start_device+0x1f2/0xd60 [ 780.287889] ? nbd_ioctl+0x62c/0xbe0 [ 780.291597] ? blkdev_ioctl+0x5cb/0x1a80 [ 780.295656] ? do_vfs_ioctl+0xcdb/0x12e0 [ 780.299709] ? __x64_sys_ioctl+0x6f/0xb0 [ 780.303768] ? do_syscall_64+0xf9/0x620 [ 780.307771] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 780.313145] ? debug_check_no_obj_freed+0x201/0x490 [ 780.318168] kernfs_create_dir_ns+0x9e/0x230 [ 780.322574] sysfs_create_dir_ns+0x127/0x280 [ 780.326976] ? sysfs_create_mount_point+0xb0/0xb0 [ 780.331821] ? mark_held_locks+0xa6/0xf0 [ 780.335881] ? kfree+0x110/0x210 [ 780.339242] ? kfree_const+0x51/0x60 [ 780.342951] kobject_add_internal+0x2a5/0x9c0 [ 780.347449] kobject_add+0x150/0x1c0 [ 780.351163] ? kset_create_and_add+0x1a0/0x1a0 [ 780.355742] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 780.360412] ? lock_downgrade+0x720/0x720 [ 780.364556] ? kernfs_put.part.0+0x225/0x590 [ 780.368963] blk_mq_register_hctx+0x23c/0x2c0 [ 780.373459] blk_mq_sysfs_register+0x143/0x1c0 [ 780.378039] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 780.383054] ? workqueue_sysfs_register+0x391/0x3e0 [ 780.388068] ? blk_mq_init_queue+0xa0/0xa0 [ 780.392303] nbd_start_device+0x1f2/0xd60 [ 780.396443] ? security_capable+0x8f/0xc0 [ 780.400589] nbd_ioctl+0x62c/0xbe0 [ 780.404130] ? _copy_from_user+0xd2/0x130 [ 780.408274] ? nbd_disconnect_and_put+0x190/0x190 [ 780.413116] ? __lock_acquire+0x6de/0x3ff0 [ 780.417344] ? nbd_disconnect_and_put+0x190/0x190 [ 780.422180] blkdev_ioctl+0x5cb/0x1a80 [ 780.426060] ? blkpg_ioctl+0x9d0/0x9d0 [ 780.429947] ? get_pid_task+0xf4/0x190 [ 780.433826] ? mark_held_locks+0xf0/0xf0 [ 780.437879] ? proc_fail_nth_write+0x95/0x1d0 [ 780.442364] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 780.447287] ? __fdget_pos+0x26f/0x310 [ 780.451173] block_ioctl+0xe9/0x130 [ 780.454790] ? blkdev_fallocate+0x3f0/0x3f0 [ 780.459105] do_vfs_ioctl+0xcdb/0x12e0 [ 780.462987] ? lock_downgrade+0x720/0x720 [ 780.467127] ? check_preemption_disabled+0x41/0x280 [ 780.472135] ? ioctl_preallocate+0x200/0x200 [ 780.476538] ? __fget+0x356/0x510 [ 780.479982] ? do_dup2+0x450/0x450 [ 780.483512] ? vfs_write+0x393/0x540 [ 780.487218] ? fput+0x2b/0x190 [ 780.490410] ksys_ioctl+0x9b/0xc0 [ 780.493860] __x64_sys_ioctl+0x6f/0xb0 [ 780.497741] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 780.502317] do_syscall_64+0xf9/0x620 [ 780.506117] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 780.511294] RIP: 0033:0x7f03750e1089 [ 780.514999] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 780.533889] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 780.541586] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 780.548844] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 executing program [ 780.556104] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 780.563362] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 780.570622] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 780.577905] CPU: 1 PID: 9732 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 780.585795] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 780.587684] kobject_add_internal failed for cpu0 (error: -12 parent: 0) [ 780.595146] Call Trace: [ 780.595165] dump_stack+0x1fc/0x2ef [ 780.595183] should_fail.cold+0xa/0xf [ 780.595199] ? setup_fault_attr+0x200/0x200 [ 780.595221] ? lock_acquire+0x170/0x3c0 [ 780.604165] block nbd5: shutting down sockets [ 780.604525] __should_failslab+0x115/0x180 [ 780.628910] should_failslab+0x5/0x10 [ 780.632711] kmem_cache_alloc_trace+0x284/0x380 [ 780.637382] ? wait_for_completion_io+0x10/0x10 [ 780.642054] ? kobj_ns_initial+0x90/0x90 [ 780.646124] call_usermodehelper_setup+0x84/0x300 [ 780.650977] kobject_uevent_env+0xe83/0x1480 [ 780.655389] ? nbd_size_update+0x28a/0x660 [ 780.659606] ? queue_work_on+0x11a/0x1f0 [ 780.663660] nbd_start_device+0x811/0xd60 [ 780.667794] nbd_ioctl+0x62c/0xbe0 [ 780.671322] ? _copy_from_user+0xd2/0x130 [ 780.675453] ? nbd_disconnect_and_put+0x190/0x190 [ 780.680279] ? __lock_acquire+0x6de/0x3ff0 [ 780.684497] ? nbd_disconnect_and_put+0x190/0x190 [ 780.689324] blkdev_ioctl+0x5cb/0x1a80 [ 780.693195] ? blkpg_ioctl+0x9d0/0x9d0 [ 780.697067] ? get_pid_task+0xf4/0x190 [ 780.700938] ? mark_held_locks+0xf0/0xf0 [ 780.704982] ? proc_fail_nth_write+0x95/0x1d0 [ 780.709458] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 780.714370] ? __fdget_pos+0x26f/0x310 [ 780.718243] block_ioctl+0xe9/0x130 [ 780.721852] ? blkdev_fallocate+0x3f0/0x3f0 [ 780.726184] do_vfs_ioctl+0xcdb/0x12e0 [ 780.730072] ? lock_downgrade+0x720/0x720 [ 780.734219] ? check_preemption_disabled+0x41/0x280 [ 780.739233] ? ioctl_preallocate+0x200/0x200 [ 780.743634] ? __fget+0x356/0x510 [ 780.747075] ? do_dup2+0x450/0x450 [ 780.750596] ? vfs_write+0x393/0x540 [ 780.754295] ? fput+0x2b/0x190 [ 780.757477] ksys_ioctl+0x9b/0xc0 [ 780.760921] __x64_sys_ioctl+0x6f/0xb0 [ 780.764793] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 780.769373] do_syscall_64+0xf9/0x620 [ 780.773164] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 780.778345] RIP: 0033:0x7f03750e1089 [ 780.782045] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 780.800932] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 executing program executing program executing program [ 780.808631] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 780.815893] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 780.823149] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 780.830401] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 780.837653] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 780.847954] block nbd2: shutting down sockets executing program [ 780.861351] block nbd3: Device being setup by another task [ 780.868162] block nbd3: Could not allocate knbd recv work queue. [ 780.875024] block nbd1: Device being setup by another task [ 780.876531] block nbd3: shutting down sockets [ 780.891178] block nbd0: Device being setup by another task [ 780.897267] block nbd0: Could not allocate knbd recv work queue. [ 780.906319] block nbd0: shutting down sockets [ 780.913212] FAULT_INJECTION: forcing a failure. [ 780.913212] name failslab, interval 1, probability 0, space 0, times 0 [ 780.914802] FAULT_INJECTION: forcing a failure. [ 780.914802] name failslab, interval 1, probability 0, space 0, times 0 [ 780.924691] CPU: 1 PID: 9752 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 780.943497] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 780.952841] Call Trace: [ 780.955424] dump_stack+0x1fc/0x2ef [ 780.959044] should_fail.cold+0xa/0xf [ 780.962844] ? setup_fault_attr+0x200/0x200 [ 780.967155] ? lock_acquire+0x170/0x3c0 [ 780.971129] __should_failslab+0x115/0x180 [ 780.975358] should_failslab+0x5/0x10 [ 780.979146] kmem_cache_alloc+0x277/0x370 [ 780.983288] skb_clone+0x151/0x3d0 [ 780.986821] netlink_broadcast_filtered+0x8e5/0xbc0 [ 780.991835] netlink_broadcast+0x35/0x40 [ 780.995893] kobject_uevent_env+0xa56/0x1480 [ 781.000297] ? nbd_size_update+0x28a/0x660 [ 781.004519] ? queue_work_on+0x11a/0x1f0 [ 781.008575] nbd_start_device+0x811/0xd60 [ 781.012726] nbd_ioctl+0x62c/0xbe0 [ 781.016265] ? _copy_from_user+0xd2/0x130 [ 781.020403] ? nbd_disconnect_and_put+0x190/0x190 [ 781.025241] ? __lock_acquire+0x6de/0x3ff0 [ 781.029467] ? nbd_disconnect_and_put+0x190/0x190 [ 781.034299] blkdev_ioctl+0x5cb/0x1a80 [ 781.038185] ? blkpg_ioctl+0x9d0/0x9d0 [ 781.042064] ? get_pid_task+0xf4/0x190 [ 781.045945] ? mark_held_locks+0xf0/0xf0 [ 781.049993] ? proc_fail_nth_write+0x95/0x1d0 [ 781.054478] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 781.059393] ? __fdget_pos+0x26f/0x310 [ 781.063276] block_ioctl+0xe9/0x130 [ 781.066897] ? blkdev_fallocate+0x3f0/0x3f0 [ 781.071383] do_vfs_ioctl+0xcdb/0x12e0 [ 781.075260] ? lock_downgrade+0x720/0x720 [ 781.079397] ? check_preemption_disabled+0x41/0x280 [ 781.084400] ? ioctl_preallocate+0x200/0x200 [ 781.088800] ? __fget+0x356/0x510 [ 781.092247] ? do_dup2+0x450/0x450 [ 781.095782] ? vfs_write+0x393/0x540 [ 781.099488] ? fput+0x2b/0x190 [ 781.102680] ksys_ioctl+0x9b/0xc0 [ 781.104077] block nbd4: Could not allocate knbd recv work queue. [ 781.106130] __x64_sys_ioctl+0x6f/0xb0 [ 781.106145] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 781.106159] do_syscall_64+0xf9/0x620 [ 781.106177] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 781.117606] block nbd4: shutting down sockets [ 781.120818] RIP: 0033:0x7f03750e1089 [ 781.120833] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 781.120840] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 781.120852] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 781.120863] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 781.179076] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 781.186337] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 781.193596] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 781.200872] CPU: 0 PID: 9747 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 781.208749] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 781.218088] Call Trace: [ 781.220666] dump_stack+0x1fc/0x2ef [ 781.224275] should_fail.cold+0xa/0xf [ 781.228060] ? setup_fault_attr+0x200/0x200 [ 781.232362] ? lock_acquire+0x170/0x3c0 [ 781.236329] __should_failslab+0x115/0x180 [ 781.240551] should_failslab+0x5/0x10 [ 781.244341] __kmalloc_track_caller+0x2a6/0x3c0 [ 781.248991] ? kstrdup_const+0x53/0x80 [ 781.252883] kstrdup+0x36/0x70 [ 781.256077] kstrdup_const+0x53/0x80 [ 781.259796] __kernfs_new_node+0x9b/0x680 [ 781.264019] ? kfree+0xcc/0x210 [ 781.267281] ? kobject_add+0x10d/0x1c0 [ 781.271149] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 781.275895] ? nbd_start_device+0x1f2/0xd60 [ 781.280205] ? nbd_ioctl+0x62c/0xbe0 [ 781.283993] ? blkdev_ioctl+0x5cb/0x1a80 [ 781.288043] ? do_vfs_ioctl+0xcdb/0x12e0 [ 781.292093] ? __x64_sys_ioctl+0x6f/0xb0 [ 781.296133] ? do_syscall_64+0xf9/0x620 [ 781.300088] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 781.305434] ? debug_check_no_obj_freed+0x201/0x490 [ 781.310441] kernfs_create_dir_ns+0x9e/0x230 executing program executing program [ 781.314848] sysfs_create_dir_ns+0x127/0x280 [ 781.319258] ? sysfs_create_mount_point+0xb0/0xb0 [ 781.322529] block nbd2: shutting down sockets [ 781.324105] ? mark_held_locks+0xa6/0xf0 [ 781.324119] ? kfree+0x110/0x210 [ 781.324136] ? kfree_const+0x51/0x60 [ 781.339697] kobject_add_internal+0x2a5/0x9c0 [ 781.344180] kobject_add+0x150/0x1c0 [ 781.347883] ? kset_create_and_add+0x1a0/0x1a0 [ 781.352448] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 781.357106] ? lock_downgrade+0x720/0x720 [ 781.361235] ? kernfs_put.part.0+0x225/0x590 [ 781.365632] blk_mq_register_hctx+0x23c/0x2c0 [ 781.370119] blk_mq_sysfs_register+0x143/0x1c0 [ 781.374687] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 781.379684] ? workqueue_sysfs_register+0x391/0x3e0 [ 781.384685] ? blk_mq_init_queue+0xa0/0xa0 [ 781.388912] nbd_start_device+0x1f2/0xd60 [ 781.393048] ? security_capable+0x8f/0xc0 [ 781.397182] nbd_ioctl+0x62c/0xbe0 [ 781.400716] ? _copy_from_user+0xd2/0x130 [ 781.404856] ? nbd_disconnect_and_put+0x190/0x190 [ 781.409687] ? __lock_acquire+0x6de/0x3ff0 [ 781.413902] ? nbd_disconnect_and_put+0x190/0x190 [ 781.418726] blkdev_ioctl+0x5cb/0x1a80 [ 781.422595] ? blkpg_ioctl+0x9d0/0x9d0 [ 781.426467] ? get_pid_task+0xf4/0x190 [ 781.430334] ? mark_held_locks+0xf0/0xf0 [ 781.434375] ? proc_fail_nth_write+0x95/0x1d0 [ 781.438860] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 781.443779] ? __fdget_pos+0x26f/0x310 [ 781.447652] block_ioctl+0xe9/0x130 [ 781.451257] ? blkdev_fallocate+0x3f0/0x3f0 [ 781.455568] do_vfs_ioctl+0xcdb/0x12e0 [ 781.459441] ? lock_downgrade+0x720/0x720 [ 781.463575] ? check_preemption_disabled+0x41/0x280 [ 781.468575] ? ioctl_preallocate+0x200/0x200 [ 781.472970] ? __fget+0x356/0x510 [ 781.476414] ? do_dup2+0x450/0x450 [ 781.479956] ? vfs_write+0x393/0x540 [ 781.484708] ? fput+0x2b/0x190 [ 781.487903] ksys_ioctl+0x9b/0xc0 [ 781.491351] __x64_sys_ioctl+0x6f/0xb0 [ 781.495220] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 781.499784] do_syscall_64+0xf9/0x620 [ 781.503576] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 781.508755] RIP: 0033:0x7f03750e1089 [ 781.512453] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 781.531339] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 781.539027] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 781.546277] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 781.553527] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 executing program executing program [ 781.560781] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 781.568048] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 781.577200] kobject_add_internal failed for cpu1 (error: -12 parent: 0) [ 781.581792] FAULT_INJECTION: forcing a failure. [ 781.581792] name failslab, interval 1, probability 0, space 0, times 0 [ 781.586391] block nbd1: shutting down sockets [ 781.613211] CPU: 1 PID: 9750 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 781.621117] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 781.630465] Call Trace: [ 781.633050] dump_stack+0x1fc/0x2ef [ 781.636670] should_fail.cold+0xa/0xf [ 781.640453] ? setup_fault_attr+0x200/0x200 [ 781.644780] ? lock_acquire+0x170/0x3c0 [ 781.648757] __should_failslab+0x115/0x180 [ 781.652993] should_failslab+0x5/0x10 [ 781.656779] kmem_cache_alloc+0x277/0x370 [ 781.662128] __d_alloc+0x2b/0xa10 [ 781.665572] ? __bpf_address_lookup+0x330/0x330 [ 781.670234] ? check_preemption_disabled+0x41/0x280 [ 781.675238] d_alloc+0x4a/0x230 [ 781.678502] d_alloc_parallel+0xeb/0x19e0 [ 781.682650] ? mark_held_locks+0xf0/0xf0 [ 781.686701] ? __d_lookup_rcu+0x6b0/0x6b0 [ 781.690831] ? mark_held_locks+0xf0/0xf0 [ 781.694872] ? __lockdep_init_map+0x100/0x5a0 [ 781.699346] ? __lockdep_init_map+0x100/0x5a0 [ 781.703823] __lookup_slow+0x18d/0x4a0 [ 781.707691] ? check_preemption_disabled+0x41/0x280 [ 781.712688] ? follow_dotdot_rcu+0x1040/0x1040 [ 781.717253] ? __d_lookup+0x411/0x710 [ 781.721039] ? d_lookup+0x18e/0x250 [ 781.724663] lookup_one_len+0x163/0x190 [ 781.728628] ? try_lookup_one_len+0x180/0x180 [ 781.733121] start_creating+0xc9/0x220 [ 781.737000] __debugfs_create_file+0x5e/0x480 [ 781.741479] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 781.746649] ? kvm_clock_get_cycles+0x14/0x30 [ 781.751133] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 781.755965] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 781.760874] ? init_srcu_struct_fields+0xca6/0x1190 [ 781.765872] ? srcu_reschedule+0x120/0x120 [ 781.770091] ? __raw_spin_lock_init+0x28/0x100 [ 781.774666] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 781.779417] ? nbd_clear_que+0x160/0x160 [ 781.783473] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 781.788479] ? workqueue_sysfs_register+0x391/0x3e0 [ 781.793477] ? blk_mq_init_queue+0xa0/0xa0 [ 781.797693] ? apparmor_sb_mount+0x970/0x970 [ 781.802085] nbd_start_device+0x1f2/0xd60 [ 781.806216] ? security_capable+0x8f/0xc0 [ 781.810352] nbd_ioctl+0x62c/0xbe0 [ 781.813880] ? _copy_from_user+0xd2/0x130 [ 781.818010] ? nbd_disconnect_and_put+0x190/0x190 [ 781.822843] ? __lock_acquire+0x6de/0x3ff0 [ 781.827066] ? nbd_disconnect_and_put+0x190/0x190 [ 781.831894] blkdev_ioctl+0x5cb/0x1a80 [ 781.835770] ? blkpg_ioctl+0x9d0/0x9d0 [ 781.839643] ? get_pid_task+0xf4/0x190 [ 781.843515] ? mark_held_locks+0xf0/0xf0 [ 781.847559] ? proc_fail_nth_write+0x95/0x1d0 [ 781.852047] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 781.856966] ? __fdget_pos+0x26f/0x310 [ 781.860863] block_ioctl+0xe9/0x130 [ 781.864479] ? blkdev_fallocate+0x3f0/0x3f0 [ 781.868791] do_vfs_ioctl+0xcdb/0x12e0 [ 781.872672] ? lock_downgrade+0x720/0x720 [ 781.876812] ? check_preemption_disabled+0x41/0x280 [ 781.881809] ? ioctl_preallocate+0x200/0x200 [ 781.886212] ? __fget+0x356/0x510 [ 781.889656] ? do_dup2+0x450/0x450 [ 781.893439] ? vfs_write+0x393/0x540 [ 781.897136] ? fput+0x2b/0x190 [ 781.900315] ksys_ioctl+0x9b/0xc0 [ 781.903749] __x64_sys_ioctl+0x6f/0xb0 [ 781.907704] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 781.912269] do_syscall_64+0xf9/0x620 [ 781.916054] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 781.921228] RIP: 0033:0x7f03750e1089 [ 781.924928] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 781.943822] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 781.951519] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 781.958777] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 781.966028] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 781.973275] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 781.980522] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 781.990728] block nbd4: Device being setup by another task [ 781.993085] FAULT_INJECTION: forcing a failure. [ 781.993085] name failslab, interval 1, probability 0, space 0, times 0 [ 781.996403] block nbd0: Device being setup by another task executing program [ 782.013578] block nbd4: Could not allocate knbd recv work queue. [ 782.022878] block nbd4: shutting down sockets [ 782.023482] CPU: 0 PID: 9761 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 782.032113] block nbd5: shutting down sockets [ 782.035243] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 782.035249] Call Trace: [ 782.035267] dump_stack+0x1fc/0x2ef [ 782.035285] should_fail.cold+0xa/0xf [ 782.043396] block nbd0: Could not allocate knbd recv work queue. executing program [ 782.049105] ? setup_fault_attr+0x200/0x200 [ 782.049121] ? lock_acquire+0x170/0x3c0 [ 782.049140] __should_failslab+0x115/0x180 [ 782.053540] block nbd0: shutting down sockets [ 782.055320] should_failslab+0x5/0x10 [ 782.055335] __kmalloc_track_caller+0x2a6/0x3c0 [ 782.055353] ? kstrdup_const+0x53/0x80 [ 782.094513] kstrdup+0x36/0x70 [ 782.097713] kstrdup_const+0x53/0x80 [ 782.101430] __kernfs_new_node+0x9b/0x680 [ 782.105581] ? kfree+0xcc/0x210 [ 782.108857] ? kobject_add+0x10d/0x1c0 [ 782.112729] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 782.117466] ? nbd_start_device+0x1f2/0xd60 [ 782.121777] ? nbd_ioctl+0x62c/0xbe0 [ 782.125481] ? blkdev_ioctl+0x5cb/0x1a80 [ 782.129521] ? do_vfs_ioctl+0xcdb/0x12e0 [ 782.133566] ? __x64_sys_ioctl+0x6f/0xb0 [ 782.137605] ? do_syscall_64+0xf9/0x620 [ 782.141648] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 782.147007] ? debug_check_no_obj_freed+0x201/0x490 [ 782.152019] kernfs_create_dir_ns+0x9e/0x230 [ 782.156408] sysfs_create_dir_ns+0x127/0x280 [ 782.160801] ? sysfs_create_mount_point+0xb0/0xb0 [ 782.165641] ? mark_held_locks+0xa6/0xf0 [ 782.169692] ? kfree+0x110/0x210 [ 782.173062] ? kfree_const+0x51/0x60 [ 782.176764] kobject_add_internal+0x2a5/0x9c0 [ 782.181263] kobject_add+0x150/0x1c0 [ 782.184987] ? kset_create_and_add+0x1a0/0x1a0 [ 782.189550] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 782.194207] ? lock_downgrade+0x720/0x720 [ 782.198338] ? kernfs_put.part.0+0x225/0x590 [ 782.202730] blk_mq_register_hctx+0x23c/0x2c0 [ 782.207207] blk_mq_sysfs_register+0x143/0x1c0 [ 782.211774] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 782.216772] ? workqueue_sysfs_register+0x391/0x3e0 [ 782.221772] ? blk_mq_init_queue+0xa0/0xa0 [ 782.225988] ? apparmor_sb_mount+0x970/0x970 [ 782.230381] nbd_start_device+0x1f2/0xd60 [ 782.234515] ? security_capable+0x8f/0xc0 [ 782.238659] nbd_ioctl+0x62c/0xbe0 [ 782.242187] ? _copy_from_user+0xd2/0x130 [ 782.246334] ? nbd_disconnect_and_put+0x190/0x190 [ 782.251166] ? __lock_acquire+0x6de/0x3ff0 [ 782.255393] ? nbd_disconnect_and_put+0x190/0x190 [ 782.260213] blkdev_ioctl+0x5cb/0x1a80 [ 782.264081] ? blkpg_ioctl+0x9d0/0x9d0 [ 782.267947] ? get_pid_task+0xf4/0x190 [ 782.271816] ? mark_held_locks+0xf0/0xf0 [ 782.275857] ? proc_fail_nth_write+0x95/0x1d0 [ 782.280343] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 782.285273] ? __fdget_pos+0x26f/0x310 [ 782.289158] block_ioctl+0xe9/0x130 [ 782.292764] ? blkdev_fallocate+0x3f0/0x3f0 [ 782.297076] do_vfs_ioctl+0xcdb/0x12e0 [ 782.300959] ? lock_downgrade+0x720/0x720 [ 782.305089] ? check_preemption_disabled+0x41/0x280 [ 782.310084] ? ioctl_preallocate+0x200/0x200 [ 782.314477] ? __fget+0x356/0x510 [ 782.317934] ? do_dup2+0x450/0x450 [ 782.321454] ? vfs_write+0x393/0x540 [ 782.325151] ? fput+0x2b/0x190 [ 782.328328] ksys_ioctl+0x9b/0xc0 [ 782.331763] __x64_sys_ioctl+0x6f/0xb0 [ 782.335632] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 782.340192] do_syscall_64+0xf9/0x620 [ 782.343977] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 782.349149] RIP: 0033:0x7f03750e1089 [ 782.352852] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 782.371836] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 782.379526] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 782.386778] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 782.394033] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 782.401283] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 782.408531] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 executing program executing program [ 782.418683] kobject_add_internal failed for cpu1 (error: -12 parent: 0) [ 782.429786] block nbd3: shutting down sockets [ 782.451031] block nbd1: Device being setup by another task [ 782.451497] block nbd2: Device being setup by another task [ 782.456933] block nbd1: Could not allocate knbd recv work queue. executing program executing program executing program executing program [ 782.468843] block nbd2: Could not allocate knbd recv work queue. [ 782.477001] block nbd2: shutting down sockets [ 782.477365] block nbd1: shutting down sockets [ 782.486152] block nbd0: Device being setup by another task [ 782.486956] block nbd4: Device being setup by another task [ 782.492626] block nbd0: Could not allocate knbd recv work queue. [ 782.503470] block nbd4: Could not allocate knbd recv work queue. [ 782.509137] block nbd0: shutting down sockets [ 782.516198] block nbd4: shutting down sockets [ 782.524689] FAULT_INJECTION: forcing a failure. [ 782.524689] name failslab, interval 1, probability 0, space 0, times 0 [ 782.537961] CPU: 0 PID: 9797 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 782.545838] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 782.555204] Call Trace: [ 782.557773] dump_stack+0x1fc/0x2ef [ 782.561382] should_fail.cold+0xa/0xf [ 782.565163] ? setup_fault_attr+0x200/0x200 [ 782.569465] ? lock_acquire+0x170/0x3c0 [ 782.573430] __should_failslab+0x115/0x180 [ 782.577655] should_failslab+0x5/0x10 [ 782.581442] kmem_cache_alloc_trace+0x284/0x380 [ 782.586098] ? wait_for_completion_io+0x10/0x10 [ 782.590751] ? kobj_ns_initial+0x90/0x90 [ 782.594796] call_usermodehelper_setup+0x84/0x300 [ 782.599623] kobject_uevent_env+0xe83/0x1480 [ 782.604019] ? nbd_size_update+0x28a/0x660 [ 782.608235] ? queue_work_on+0x11a/0x1f0 [ 782.612288] nbd_start_device+0x811/0xd60 [ 782.616429] nbd_ioctl+0x62c/0xbe0 [ 782.619952] ? _copy_from_user+0xd2/0x130 [ 782.624087] ? nbd_disconnect_and_put+0x190/0x190 [ 782.628926] ? __lock_acquire+0x6de/0x3ff0 [ 782.633143] ? nbd_disconnect_and_put+0x190/0x190 [ 782.637968] blkdev_ioctl+0x5cb/0x1a80 [ 782.641840] ? blkpg_ioctl+0x9d0/0x9d0 [ 782.645717] ? get_pid_task+0xf4/0x190 [ 782.649588] ? mark_held_locks+0xf0/0xf0 [ 782.653626] ? proc_fail_nth_write+0x95/0x1d0 [ 782.658101] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 782.663021] ? __fdget_pos+0x26f/0x310 [ 782.666901] block_ioctl+0xe9/0x130 [ 782.670517] ? blkdev_fallocate+0x3f0/0x3f0 [ 782.674837] do_vfs_ioctl+0xcdb/0x12e0 [ 782.678712] ? lock_downgrade+0x720/0x720 [ 782.682849] ? check_preemption_disabled+0x41/0x280 [ 782.687848] ? ioctl_preallocate+0x200/0x200 [ 782.692242] ? __fget+0x356/0x510 [ 782.695689] ? do_dup2+0x450/0x450 [ 782.699216] ? vfs_write+0x393/0x540 [ 782.702907] ? fput+0x2b/0x190 [ 782.706083] ksys_ioctl+0x9b/0xc0 [ 782.709515] __x64_sys_ioctl+0x6f/0xb0 [ 782.713394] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 782.717967] do_syscall_64+0xf9/0x620 [ 782.721751] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 782.726919] RIP: 0033:0x7f03750e1089 [ 782.730614] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 782.749495] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 782.757180] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 782.764428] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 executing program [ 782.771678] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 782.778927] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 782.786175] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 782.794774] block nbd5: shutting down sockets [ 782.803598] FAULT_INJECTION: forcing a failure. [ 782.803598] name failslab, interval 1, probability 0, space 0, times 0 [ 782.815444] CPU: 1 PID: 9801 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 782.823332] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 782.832682] Call Trace: [ 782.835253] dump_stack+0x1fc/0x2ef [ 782.838862] should_fail.cold+0xa/0xf [ 782.842653] ? setup_fault_attr+0x200/0x200 [ 782.846974] ? lock_acquire+0x170/0x3c0 [ 782.850951] __should_failslab+0x115/0x180 [ 782.855175] should_failslab+0x5/0x10 [ 782.858957] kmem_cache_alloc+0x277/0x370 [ 782.863096] __d_alloc+0x2b/0xa10 [ 782.866532] ? __bpf_address_lookup+0x330/0x330 [ 782.871192] ? check_preemption_disabled+0x41/0x280 [ 782.876192] d_alloc+0x4a/0x230 [ 782.879456] d_alloc_parallel+0xeb/0x19e0 [ 782.883605] ? mark_held_locks+0xf0/0xf0 [ 782.887657] ? __d_lookup_rcu+0x6b0/0x6b0 [ 782.891799] ? mark_held_locks+0xf0/0xf0 [ 782.895848] ? __lockdep_init_map+0x100/0x5a0 [ 782.900328] ? __lockdep_init_map+0x100/0x5a0 [ 782.904804] __lookup_slow+0x18d/0x4a0 [ 782.908682] ? check_preemption_disabled+0x41/0x280 [ 782.913692] ? follow_dotdot_rcu+0x1040/0x1040 [ 782.918254] ? __d_lookup+0x411/0x710 [ 782.922039] ? d_lookup+0x18e/0x250 [ 782.925647] lookup_one_len+0x163/0x190 [ 782.929621] ? try_lookup_one_len+0x180/0x180 [ 782.934105] start_creating+0xc9/0x220 [ 782.937989] __debugfs_create_file+0x5e/0x480 [ 782.942488] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 782.947661] ? kvm_clock_get_cycles+0x14/0x30 [ 782.952142] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 782.956978] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 782.961900] ? init_srcu_struct_fields+0xca6/0x1190 [ 782.966905] ? srcu_reschedule+0x120/0x120 [ 782.971126] ? __raw_spin_lock_init+0x28/0x100 [ 782.975697] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 782.980449] ? nbd_clear_que+0x160/0x160 [ 782.984501] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 782.989503] ? workqueue_sysfs_register+0x391/0x3e0 [ 782.994602] ? blk_mq_init_queue+0xa0/0xa0 [ 782.998831] ? apparmor_sb_mount+0x970/0x970 [ 783.003226] nbd_start_device+0x1f2/0xd60 [ 783.007362] ? security_capable+0x8f/0xc0 [ 783.011512] nbd_ioctl+0x62c/0xbe0 [ 783.015046] ? _copy_from_user+0xd2/0x130 [ 783.019188] ? nbd_disconnect_and_put+0x190/0x190 [ 783.024023] ? __lock_acquire+0x6de/0x3ff0 [ 783.028238] ? nbd_disconnect_and_put+0x190/0x190 [ 783.033062] blkdev_ioctl+0x5cb/0x1a80 [ 783.036947] ? blkpg_ioctl+0x9d0/0x9d0 [ 783.040819] ? get_pid_task+0xf4/0x190 [ 783.044688] ? mark_held_locks+0xf0/0xf0 [ 783.048730] ? proc_fail_nth_write+0x95/0x1d0 [ 783.053228] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 783.058154] ? __fdget_pos+0x26f/0x310 [ 783.062030] block_ioctl+0xe9/0x130 [ 783.065648] ? blkdev_fallocate+0x3f0/0x3f0 [ 783.070074] do_vfs_ioctl+0xcdb/0x12e0 [ 783.073962] ? lock_downgrade+0x720/0x720 [ 783.078094] ? check_preemption_disabled+0x41/0x280 [ 783.083096] ? ioctl_preallocate+0x200/0x200 [ 783.087506] ? __fget+0x356/0x510 [ 783.090956] ? do_dup2+0x450/0x450 [ 783.094492] ? vfs_write+0x393/0x540 [ 783.098197] ? fput+0x2b/0x190 [ 783.101374] ksys_ioctl+0x9b/0xc0 [ 783.104808] __x64_sys_ioctl+0x6f/0xb0 [ 783.108687] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 783.113259] do_syscall_64+0xf9/0x620 [ 783.117043] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 783.122217] RIP: 0033:0x7f03750e1089 [ 783.125925] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 783.144812] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 783.152501] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 783.159750] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 783.167002] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 783.174250] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 783.181500] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 783.191449] block nbd1: Could not allocate knbd recv work queue. [ 783.198879] block nbd1: shutting down sockets [ 783.203737] block nbd2: Could not allocate knbd recv work queue. [ 783.213460] block nbd2: shutting down sockets [ 783.221224] block nbd0: Device being setup by another task executing program executing program executing program executing program [ 783.227067] block nbd0: Could not allocate knbd recv work queue. [ 783.233354] block nbd4: Device being setup by another task [ 783.239849] block nbd4: Could not allocate knbd recv work queue. [ 783.240493] block nbd3: shutting down sockets [ 783.248219] block nbd4: shutting down sockets [ 783.251008] block nbd5: Device being setup by another task [ 783.256721] block nbd0: shutting down sockets executing program executing program [ 783.277654] block nbd5: Could not allocate knbd recv work queue. [ 783.286359] block nbd5: shutting down sockets [ 783.342484] FAULT_INJECTION: forcing a failure. [ 783.342484] name failslab, interval 1, probability 0, space 0, times 0 [ 783.343096] FAULT_INJECTION: forcing a failure. [ 783.343096] name failslab, interval 1, probability 0, space 0, times 0 [ 783.365998] CPU: 0 PID: 9837 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 783.373406] FAULT_INJECTION: forcing a failure. [ 783.373406] name failslab, interval 1, probability 0, space 0, times 0 [ 783.373882] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 783.373887] Call Trace: [ 783.373904] dump_stack+0x1fc/0x2ef [ 783.373926] should_fail.cold+0xa/0xf [ 783.404383] ? setup_fault_attr+0x200/0x200 [ 783.408697] ? lock_acquire+0x170/0x3c0 [ 783.412667] __should_failslab+0x115/0x180 [ 783.416894] should_failslab+0x5/0x10 [ 783.420687] kmem_cache_alloc_trace+0x284/0x380 [ 783.425344] ? wait_for_completion_io+0x10/0x10 [ 783.430007] ? kobj_ns_initial+0x90/0x90 [ 783.434062] call_usermodehelper_setup+0x84/0x300 [ 783.438908] kobject_uevent_env+0xe83/0x1480 [ 783.443314] ? nbd_size_update+0x28a/0x660 [ 783.447539] ? queue_work_on+0x11a/0x1f0 [ 783.451596] nbd_start_device+0x811/0xd60 [ 783.455747] nbd_ioctl+0x62c/0xbe0 [ 783.459282] ? _copy_from_user+0xd2/0x130 [ 783.463424] ? nbd_disconnect_and_put+0x190/0x190 [ 783.468373] ? __lock_acquire+0x6de/0x3ff0 [ 783.472609] ? nbd_disconnect_and_put+0x190/0x190 [ 783.477445] blkdev_ioctl+0x5cb/0x1a80 [ 783.481328] ? blkpg_ioctl+0x9d0/0x9d0 [ 783.485209] ? get_pid_task+0xf4/0x190 [ 783.489092] ? mark_held_locks+0xf0/0xf0 [ 783.493142] ? proc_fail_nth_write+0x95/0x1d0 [ 783.497625] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 783.502546] ? __fdget_pos+0x26f/0x310 [ 783.506432] block_ioctl+0xe9/0x130 [ 783.510048] ? blkdev_fallocate+0x3f0/0x3f0 [ 783.514357] do_vfs_ioctl+0xcdb/0x12e0 [ 783.518234] ? lock_downgrade+0x720/0x720 [ 783.522378] ? check_preemption_disabled+0x41/0x280 [ 783.527385] ? ioctl_preallocate+0x200/0x200 [ 783.531784] ? __fget+0x356/0x510 [ 783.535228] ? do_dup2+0x450/0x450 [ 783.538753] ? vfs_write+0x393/0x540 [ 783.542456] ? fput+0x2b/0x190 [ 783.545644] ksys_ioctl+0x9b/0xc0 [ 783.549092] __x64_sys_ioctl+0x6f/0xb0 [ 783.552968] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 783.557539] do_syscall_64+0xf9/0x620 [ 783.561334] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 783.566513] RIP: 0033:0x7f03750e1089 [ 783.570212] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 783.589103] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 783.596797] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 783.604051] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 783.611307] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 783.618577] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 783.625834] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 783.633107] CPU: 1 PID: 9846 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 783.640994] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 783.650340] Call Trace: [ 783.652936] dump_stack+0x1fc/0x2ef [ 783.655879] block nbd2: shutting down sockets [ 783.656570] should_fail.cold+0xa/0xf [ 783.656587] ? setup_fault_attr+0x200/0x200 [ 783.669152] ? lock_acquire+0x170/0x3c0 [ 783.673130] __should_failslab+0x115/0x180 [ 783.677363] should_failslab+0x5/0x10 [ 783.681153] kmem_cache_alloc_trace+0x284/0x380 [ 783.685810] ? wait_for_completion_io+0x10/0x10 [ 783.690468] ? kobj_ns_initial+0x90/0x90 [ 783.694520] call_usermodehelper_setup+0x84/0x300 [ 783.699356] kobject_uevent_env+0xe83/0x1480 [ 783.703769] ? nbd_size_update+0x28a/0x660 [ 783.708007] ? queue_work_on+0x11a/0x1f0 [ 783.712071] nbd_start_device+0x811/0xd60 [ 783.716224] nbd_ioctl+0x62c/0xbe0 [ 783.719759] ? _copy_from_user+0xd2/0x130 [ 783.723898] ? nbd_disconnect_and_put+0x190/0x190 [ 783.728742] ? __lock_acquire+0x6de/0x3ff0 [ 783.732978] ? nbd_disconnect_and_put+0x190/0x190 [ 783.737809] blkdev_ioctl+0x5cb/0x1a80 [ 783.741684] ? blkpg_ioctl+0x9d0/0x9d0 [ 783.745560] ? get_pid_task+0xf4/0x190 [ 783.749435] ? mark_held_locks+0xf0/0xf0 [ 783.753486] ? proc_fail_nth_write+0x95/0x1d0 [ 783.757988] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 783.762906] ? __fdget_pos+0x26f/0x310 [ 783.766791] block_ioctl+0xe9/0x130 [ 783.770404] ? blkdev_fallocate+0x3f0/0x3f0 [ 783.774719] do_vfs_ioctl+0xcdb/0x12e0 [ 783.778597] ? lock_downgrade+0x720/0x720 [ 783.782734] ? check_preemption_disabled+0x41/0x280 [ 783.787736] ? ioctl_preallocate+0x200/0x200 [ 783.792137] ? __fget+0x356/0x510 [ 783.795578] ? do_dup2+0x450/0x450 [ 783.799104] ? vfs_write+0x393/0x540 [ 783.802805] ? fput+0x2b/0x190 [ 783.805990] ksys_ioctl+0x9b/0xc0 [ 783.807328] block nbd3: Could not allocate knbd recv work queue. [ 783.809433] __x64_sys_ioctl+0x6f/0xb0 [ 783.819428] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 783.822116] block nbd3: shutting down sockets [ 783.824001] do_syscall_64+0xf9/0x620 [ 783.832353] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 783.837541] RIP: 0033:0x7f03750e1089 [ 783.841252] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 783.860140] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 783.867835] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 783.875093] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 783.882347] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 executing program executing program executing program [ 783.889600] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 783.896859] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 783.904132] CPU: 0 PID: 9840 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 783.910142] block nbd5: shutting down sockets [ 783.912010] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 783.912015] Call Trace: [ 783.912034] dump_stack+0x1fc/0x2ef [ 783.912053] should_fail.cold+0xa/0xf [ 783.912070] ? setup_fault_attr+0x200/0x200 [ 783.912084] ? lock_acquire+0x170/0x3c0 [ 783.912103] __should_failslab+0x115/0x180 [ 783.912120] should_failslab+0x5/0x10 [ 783.952134] kmem_cache_alloc_trace+0x284/0x380 [ 783.956782] ? wait_for_completion_io+0x10/0x10 [ 783.961446] ? kobj_ns_initial+0x90/0x90 [ 783.965490] call_usermodehelper_setup+0x84/0x300 [ 783.970313] kobject_uevent_env+0xe83/0x1480 [ 783.974709] ? nbd_size_update+0x28a/0x660 [ 783.978926] ? queue_work_on+0x11a/0x1f0 [ 783.982973] nbd_start_device+0x811/0xd60 [ 783.987118] nbd_ioctl+0x62c/0xbe0 [ 783.990657] ? _copy_from_user+0xd2/0x130 [ 783.994798] ? nbd_disconnect_and_put+0x190/0x190 [ 783.999628] ? __lock_acquire+0x6de/0x3ff0 [ 784.003845] ? nbd_disconnect_and_put+0x190/0x190 [ 784.008670] blkdev_ioctl+0x5cb/0x1a80 [ 784.012544] ? blkpg_ioctl+0x9d0/0x9d0 [ 784.016416] ? get_pid_task+0xf4/0x190 [ 784.020286] ? mark_held_locks+0xf0/0xf0 [ 784.024336] ? proc_fail_nth_write+0x95/0x1d0 [ 784.028820] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 784.033742] ? __fdget_pos+0x26f/0x310 [ 784.037625] block_ioctl+0xe9/0x130 [ 784.041234] ? blkdev_fallocate+0x3f0/0x3f0 [ 784.045539] do_vfs_ioctl+0xcdb/0x12e0 [ 784.049416] ? lock_downgrade+0x720/0x720 [ 784.053548] ? check_preemption_disabled+0x41/0x280 [ 784.058543] ? ioctl_preallocate+0x200/0x200 [ 784.062934] ? __fget+0x356/0x510 [ 784.066370] ? do_dup2+0x450/0x450 [ 784.069891] ? vfs_write+0x393/0x540 [ 784.073585] ? fput+0x2b/0x190 [ 784.076767] ksys_ioctl+0x9b/0xc0 [ 784.080205] __x64_sys_ioctl+0x6f/0xb0 [ 784.084082] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 784.088668] do_syscall_64+0xf9/0x620 [ 784.092468] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 784.097645] RIP: 0033:0x7f03750e1089 [ 784.101345] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 784.120229] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 784.127918] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 784.135172] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 784.142425] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 784.149679] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 784.156925] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 784.165664] block nbd0: shutting down sockets [ 784.171767] FAULT_INJECTION: forcing a failure. [ 784.171767] name failslab, interval 1, probability 0, space 0, times 0 [ 784.171776] FAULT_INJECTION: forcing a failure. [ 784.171776] name failslab, interval 1, probability 0, space 0, times 0 [ 784.171793] CPU: 0 PID: 9836 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 784.202084] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 784.211435] Call Trace: [ 784.214018] dump_stack+0x1fc/0x2ef [ 784.217643] should_fail.cold+0xa/0xf [ 784.221439] ? setup_fault_attr+0x200/0x200 [ 784.225752] ? lock_acquire+0x170/0x3c0 [ 784.229721] __should_failslab+0x115/0x180 [ 784.233948] should_failslab+0x5/0x10 [ 784.237739] kmem_cache_alloc+0x277/0x370 [ 784.241878] __d_alloc+0x2b/0xa10 [ 784.245408] ? __bpf_address_lookup+0x330/0x330 [ 784.250071] ? check_preemption_disabled+0x41/0x280 [ 784.255078] d_alloc+0x4a/0x230 [ 784.258350] d_alloc_parallel+0xeb/0x19e0 [ 784.262507] ? mark_held_locks+0xf0/0xf0 [ 784.266576] ? __d_lookup_rcu+0x6b0/0x6b0 [ 784.270731] ? mark_held_locks+0xf0/0xf0 [ 784.274790] ? __lockdep_init_map+0x100/0x5a0 [ 784.279279] ? __lockdep_init_map+0x100/0x5a0 [ 784.283773] __lookup_slow+0x18d/0x4a0 [ 784.287659] ? check_preemption_disabled+0x41/0x280 [ 784.292671] ? follow_dotdot_rcu+0x1040/0x1040 [ 784.297248] ? __d_lookup+0x411/0x710 [ 784.301051] ? d_lookup+0x18e/0x250 [ 784.304687] lookup_one_len+0x163/0x190 [ 784.308665] ? try_lookup_one_len+0x180/0x180 [ 784.313160] start_creating+0xc9/0x220 [ 784.317043] __debugfs_create_file+0x5e/0x480 [ 784.321550] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 784.326744] ? kvm_clock_get_cycles+0x14/0x30 [ 784.331235] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 784.336071] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 784.340990] ? init_srcu_struct_fields+0xca6/0x1190 [ 784.346004] ? srcu_reschedule+0x120/0x120 [ 784.350232] ? __raw_spin_lock_init+0x28/0x100 [ 784.354810] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 784.359560] ? nbd_clear_que+0x160/0x160 [ 784.363617] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 784.368627] ? workqueue_sysfs_register+0x391/0x3e0 [ 784.373641] ? blk_mq_init_queue+0xa0/0xa0 [ 784.377871] ? apparmor_sb_mount+0x970/0x970 [ 784.382282] nbd_start_device+0x1f2/0xd60 [ 784.386513] ? security_capable+0x8f/0xc0 [ 784.390654] nbd_ioctl+0x62c/0xbe0 [ 784.394184] ? _copy_from_user+0xd2/0x130 [ 784.398320] ? nbd_disconnect_and_put+0x190/0x190 [ 784.403154] ? __lock_acquire+0x6de/0x3ff0 [ 784.407379] ? nbd_disconnect_and_put+0x190/0x190 [ 784.412215] blkdev_ioctl+0x5cb/0x1a80 [ 784.416093] ? blkpg_ioctl+0x9d0/0x9d0 [ 784.419970] ? get_pid_task+0xf4/0x190 [ 784.423851] ? mark_held_locks+0xf0/0xf0 [ 784.427905] ? proc_fail_nth_write+0x95/0x1d0 [ 784.432400] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 784.437316] ? __fdget_pos+0x26f/0x310 [ 784.441204] block_ioctl+0xe9/0x130 [ 784.444822] ? blkdev_fallocate+0x3f0/0x3f0 [ 784.449131] do_vfs_ioctl+0xcdb/0x12e0 [ 784.453005] ? lock_downgrade+0x720/0x720 [ 784.457145] ? check_preemption_disabled+0x41/0x280 [ 784.462150] ? ioctl_preallocate+0x200/0x200 [ 784.466551] ? __fget+0x356/0x510 [ 784.469994] ? do_dup2+0x450/0x450 [ 784.473524] ? vfs_write+0x393/0x540 [ 784.477231] ? fput+0x2b/0x190 [ 784.480419] ksys_ioctl+0x9b/0xc0 [ 784.483864] __x64_sys_ioctl+0x6f/0xb0 [ 784.487744] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 784.493445] do_syscall_64+0xf9/0x620 [ 784.497337] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 784.502513] RIP: 0033:0x7f03750e1089 [ 784.506216] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 784.525101] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 784.532797] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 784.540052] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 784.547309] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 784.554566] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 784.561821] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 784.569095] CPU: 1 PID: 9841 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 784.576977] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 784.578690] block nbd1: shutting down sockets [ 784.586320] Call Trace: [ 784.586339] dump_stack+0x1fc/0x2ef [ 784.586357] should_fail.cold+0xa/0xf [ 784.586372] ? setup_fault_attr+0x200/0x200 [ 784.586386] ? lock_acquire+0x170/0x3c0 [ 784.586403] __should_failslab+0x115/0x180 [ 784.613336] should_failslab+0x5/0x10 [ 784.617139] kmem_cache_alloc+0x277/0x370 [ 784.621287] __d_alloc+0x2b/0xa10 [ 784.624736] ? __bpf_address_lookup+0x330/0x330 [ 784.629418] ? check_preemption_disabled+0x41/0x280 [ 784.634437] d_alloc+0x4a/0x230 [ 784.637721] d_alloc_parallel+0xeb/0x19e0 [ 784.641902] ? mark_held_locks+0xf0/0xf0 [ 784.645964] ? __d_lookup_rcu+0x6b0/0x6b0 [ 784.650105] ? mark_held_locks+0xf0/0xf0 [ 784.654242] ? __lockdep_init_map+0x100/0x5a0 [ 784.658716] ? __lockdep_init_map+0x100/0x5a0 [ 784.663193] __lookup_slow+0x18d/0x4a0 [ 784.667060] ? check_preemption_disabled+0x41/0x280 [ 784.672057] ? follow_dotdot_rcu+0x1040/0x1040 [ 784.676624] ? __d_lookup+0x411/0x710 [ 784.680406] ? d_lookup+0x18e/0x250 [ 784.684015] lookup_one_len+0x163/0x190 [ 784.687972] ? try_lookup_one_len+0x180/0x180 [ 784.692460] start_creating+0xc9/0x220 [ 784.696325] __debugfs_create_file+0x5e/0x480 [ 784.700813] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 784.705988] ? kvm_clock_get_cycles+0x14/0x30 [ 784.710464] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 784.715287] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 784.720193] ? init_srcu_struct_fields+0xca6/0x1190 [ 784.725189] ? srcu_reschedule+0x120/0x120 [ 784.729403] ? __raw_spin_lock_init+0x28/0x100 [ 784.733968] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 784.738705] ? nbd_clear_que+0x160/0x160 [ 784.742748] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 784.747743] ? workqueue_sysfs_register+0x391/0x3e0 [ 784.752742] ? blk_mq_init_queue+0xa0/0xa0 [ 784.756955] ? apparmor_sb_mount+0x970/0x970 [ 784.761347] nbd_start_device+0x1f2/0xd60 [ 784.765476] ? security_capable+0x8f/0xc0 [ 784.769606] nbd_ioctl+0x62c/0xbe0 [ 784.773129] ? _copy_from_user+0xd2/0x130 [ 784.777264] ? nbd_disconnect_and_put+0x190/0x190 [ 784.782092] ? __lock_acquire+0x6de/0x3ff0 [ 784.786306] ? nbd_disconnect_and_put+0x190/0x190 [ 784.791127] blkdev_ioctl+0x5cb/0x1a80 [ 784.794994] ? blkpg_ioctl+0x9d0/0x9d0 [ 784.798864] ? get_pid_task+0xf4/0x190 [ 784.802732] ? mark_held_locks+0xf0/0xf0 [ 784.806773] ? proc_fail_nth_write+0x95/0x1d0 [ 784.811247] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 784.816154] ? __fdget_pos+0x26f/0x310 [ 784.820026] block_ioctl+0xe9/0x130 [ 784.823629] ? blkdev_fallocate+0x3f0/0x3f0 [ 784.828027] do_vfs_ioctl+0xcdb/0x12e0 [ 784.831895] ? lock_downgrade+0x720/0x720 [ 784.836030] ? check_preemption_disabled+0x41/0x280 [ 784.841025] ? ioctl_preallocate+0x200/0x200 [ 784.845417] ? __fget+0x356/0x510 [ 784.848852] ? do_dup2+0x450/0x450 [ 784.852374] ? vfs_write+0x393/0x540 [ 784.856067] ? fput+0x2b/0x190 [ 784.859241] ksys_ioctl+0x9b/0xc0 [ 784.862671] __x64_sys_ioctl+0x6f/0xb0 [ 784.866537] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 784.871099] do_syscall_64+0xf9/0x620 [ 784.874880] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 784.880047] RIP: 0033:0x7f03750e1089 executing program executing program [ 784.883744] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 784.902622] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 784.910311] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 784.917560] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 784.924825] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 784.932075] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 784.939323] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 784.955757] block nbd4: shutting down sockets [ 784.960965] block nbd3: Device being setup by another task [ 784.966691] block nbd5: Device being setup by another task [ 784.972395] block nbd2: Device being setup by another task [ 784.979207] block nbd2: Could not allocate knbd recv work queue. [ 784.985762] block nbd3: Could not allocate knbd recv work queue. [ 784.992494] block nbd5: Could not allocate knbd recv work queue. [ 784.997631] block nbd2: shutting down sockets executing program executing program executing program executing program [ 785.001511] block nbd5: shutting down sockets [ 785.008716] block nbd3: shutting down sockets [ 785.032231] FAULT_INJECTION: forcing a failure. [ 785.032231] name failslab, interval 1, probability 0, space 0, times 0 [ 785.043826] CPU: 0 PID: 9873 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 785.051692] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 785.061029] Call Trace: [ 785.063606] dump_stack+0x1fc/0x2ef [ 785.067219] should_fail.cold+0xa/0xf [ 785.071000] ? setup_fault_attr+0x200/0x200 [ 785.075304] ? lock_acquire+0x170/0x3c0 [ 785.079262] __should_failslab+0x115/0x180 [ 785.083479] should_failslab+0x5/0x10 [ 785.087257] kmem_cache_alloc+0x277/0x370 [ 785.091384] skb_clone+0x151/0x3d0 [ 785.094916] netlink_broadcast_filtered+0x8e5/0xbc0 [ 785.099922] netlink_broadcast+0x35/0x40 [ 785.103977] kobject_uevent_env+0xa56/0x1480 [ 785.108464] ? nbd_size_update+0x28a/0x660 [ 785.112694] ? queue_work_on+0x11a/0x1f0 [ 785.116763] nbd_start_device+0x811/0xd60 [ 785.120897] nbd_ioctl+0x62c/0xbe0 [ 785.124430] ? _copy_from_user+0xd2/0x130 [ 785.128572] ? nbd_disconnect_and_put+0x190/0x190 [ 785.133400] ? __lock_acquire+0x6de/0x3ff0 [ 785.137617] ? nbd_disconnect_and_put+0x190/0x190 [ 785.142789] blkdev_ioctl+0x5cb/0x1a80 [ 785.146659] ? blkpg_ioctl+0x9d0/0x9d0 [ 785.150527] ? get_pid_task+0xf4/0x190 [ 785.154397] ? mark_held_locks+0xf0/0xf0 [ 785.158435] ? proc_fail_nth_write+0x95/0x1d0 [ 785.162934] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 785.167864] ? __fdget_pos+0x26f/0x310 [ 785.171755] block_ioctl+0xe9/0x130 [ 785.175369] ? blkdev_fallocate+0x3f0/0x3f0 [ 785.179682] do_vfs_ioctl+0xcdb/0x12e0 [ 785.183553] ? lock_downgrade+0x720/0x720 [ 785.187687] ? check_preemption_disabled+0x41/0x280 [ 785.192694] ? ioctl_preallocate+0x200/0x200 [ 785.197096] ? __fget+0x356/0x510 [ 785.200530] ? do_dup2+0x450/0x450 [ 785.204049] ? vfs_write+0x393/0x540 [ 785.207744] ? fput+0x2b/0x190 [ 785.210920] ksys_ioctl+0x9b/0xc0 [ 785.214355] __x64_sys_ioctl+0x6f/0xb0 [ 785.218223] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 785.222789] do_syscall_64+0xf9/0x620 [ 785.226575] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 785.231743] RIP: 0033:0x7f03750e1089 [ 785.235437] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 785.254317] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 785.262006] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 785.269256] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 785.276507] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 785.283766] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 785.291037] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 785.311635] FAULT_INJECTION: forcing a failure. [ 785.311635] name failslab, interval 1, probability 0, space 0, times 0 [ 785.323010] CPU: 1 PID: 9894 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 785.330990] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 785.340340] Call Trace: [ 785.342914] dump_stack+0x1fc/0x2ef [ 785.346530] should_fail.cold+0xa/0xf [ 785.350323] ? setup_fault_attr+0x200/0x200 [ 785.354637] ? lock_acquire+0x170/0x3c0 [ 785.358601] __should_failslab+0x115/0x180 [ 785.362824] should_failslab+0x5/0x10 [ 785.366617] kmem_cache_alloc_trace+0x284/0x380 [ 785.371277] ? wait_for_completion_io+0x10/0x10 [ 785.375939] ? kobj_ns_initial+0x90/0x90 [ 785.379991] call_usermodehelper_setup+0x84/0x300 [ 785.384829] kobject_uevent_env+0xe83/0x1480 [ 785.389226] ? nbd_size_update+0x28a/0x660 [ 785.393450] ? queue_work_on+0x11a/0x1f0 [ 785.397493] nbd_start_device+0x811/0xd60 [ 785.401630] nbd_ioctl+0x62c/0xbe0 [ 785.405160] ? _copy_from_user+0xd2/0x130 [ 785.409288] ? nbd_disconnect_and_put+0x190/0x190 [ 785.414206] ? __lock_acquire+0x6de/0x3ff0 [ 785.418424] ? nbd_disconnect_and_put+0x190/0x190 [ 785.423258] blkdev_ioctl+0x5cb/0x1a80 [ 785.427135] ? blkpg_ioctl+0x9d0/0x9d0 [ 785.431017] ? get_pid_task+0xf4/0x190 [ 785.434899] ? mark_held_locks+0xf0/0xf0 [ 785.438939] ? proc_fail_nth_write+0x95/0x1d0 [ 785.443415] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 785.448324] ? __fdget_pos+0x26f/0x310 [ 785.452195] block_ioctl+0xe9/0x130 [ 785.455799] ? blkdev_fallocate+0x3f0/0x3f0 [ 785.460099] do_vfs_ioctl+0xcdb/0x12e0 [ 785.463970] ? lock_downgrade+0x720/0x720 [ 785.468100] ? check_preemption_disabled+0x41/0x280 [ 785.473107] ? ioctl_preallocate+0x200/0x200 [ 785.477522] ? __fget+0x356/0x510 [ 785.480969] ? do_dup2+0x450/0x450 [ 785.484486] ? vfs_write+0x393/0x540 [ 785.488181] ? fput+0x2b/0x190 [ 785.491356] ksys_ioctl+0x9b/0xc0 [ 785.494794] __x64_sys_ioctl+0x6f/0xb0 [ 785.498674] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 785.503246] do_syscall_64+0xf9/0x620 [ 785.507032] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 785.512290] RIP: 0033:0x7f03750e1089 [ 785.515984] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 785.534864] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 785.542552] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 785.549799] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 785.557047] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 785.564294] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 785.571552] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 785.580493] block nbd4: Could not allocate knbd recv work queue. [ 785.587087] block nbd5: Could not allocate knbd recv work queue. [ 785.593330] block nbd3: Device being setup by another task [ 785.599014] block nbd2: Device being setup by another task [ 785.605430] block nbd3: Could not allocate knbd recv work queue. executing program executing program executing program [ 785.612497] block nbd4: shutting down sockets [ 785.614482] block nbd5: shutting down sockets [ 785.617785] block nbd3: shutting down sockets [ 785.653092] FAULT_INJECTION: forcing a failure. [ 785.653092] name failslab, interval 1, probability 0, space 0, times 0 [ 785.664611] CPU: 0 PID: 9887 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 785.672496] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 785.681833] Call Trace: [ 785.684408] dump_stack+0x1fc/0x2ef [ 785.688019] should_fail.cold+0xa/0xf [ 785.691807] ? setup_fault_attr+0x200/0x200 [ 785.696115] ? lock_acquire+0x170/0x3c0 [ 785.700084] __should_failslab+0x115/0x180 [ 785.704313] should_failslab+0x5/0x10 [ 785.708105] __kmalloc_track_caller+0x2a6/0x3c0 [ 785.712755] ? kstrdup_const+0x53/0x80 [ 785.714902] block nbd0: shutting down sockets [ 785.716631] kstrdup+0x36/0x70 [ 785.716648] kstrdup_const+0x53/0x80 [ 785.716663] __kernfs_new_node+0x9b/0x680 [ 785.716675] ? kfree+0xcc/0x210 [ 785.716692] ? kobject_add+0x10d/0x1c0 [ 785.739294] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 785.744057] ? nbd_start_device+0x1f2/0xd60 [ 785.748372] ? nbd_ioctl+0x62c/0xbe0 [ 785.752071] ? blkdev_ioctl+0x5cb/0x1a80 [ 785.756121] ? do_vfs_ioctl+0xcdb/0x12e0 [ 785.760175] ? __x64_sys_ioctl+0x6f/0xb0 [ 785.764232] ? do_syscall_64+0xf9/0x620 [ 785.768201] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 785.773576] ? debug_check_no_obj_freed+0x201/0x490 [ 785.778587] kernfs_create_dir_ns+0x9e/0x230 [ 785.782978] sysfs_create_dir_ns+0x127/0x280 [ 785.787365] ? sysfs_create_mount_point+0xb0/0xb0 [ 785.792190] ? mark_held_locks+0xa6/0xf0 [ 785.796233] ? kfree+0x110/0x210 [ 785.799578] ? kfree_const+0x51/0x60 [ 785.803302] kobject_add_internal+0x2a5/0x9c0 [ 785.807786] kobject_add+0x150/0x1c0 [ 785.811488] ? kset_create_and_add+0x1a0/0x1a0 [ 785.816051] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 785.820711] ? lock_downgrade+0x720/0x720 [ 785.824848] ? kernfs_put.part.0+0x225/0x590 [ 785.829242] blk_mq_register_hctx+0x23c/0x2c0 [ 785.833729] blk_mq_sysfs_register+0x143/0x1c0 [ 785.838300] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 785.843304] ? workqueue_sysfs_register+0x391/0x3e0 [ 785.848314] ? blk_mq_init_queue+0xa0/0xa0 [ 785.852539] nbd_start_device+0x1f2/0xd60 [ 785.856677] ? security_capable+0x8f/0xc0 [ 785.860819] nbd_ioctl+0x62c/0xbe0 [ 785.863298] block nbd5: Could not allocate knbd recv work queue. [ 785.864347] ? _copy_from_user+0xd2/0x130 [ 785.864365] ? nbd_disconnect_and_put+0x190/0x190 [ 785.872902] block nbd4: Could not allocate knbd recv work queue. [ 785.874635] ? __lock_acquire+0x6de/0x3ff0 [ 785.874654] ? nbd_disconnect_and_put+0x190/0x190 [ 785.874670] blkdev_ioctl+0x5cb/0x1a80 [ 785.874683] ? blkpg_ioctl+0x9d0/0x9d0 [ 785.881293] block nbd4: shutting down sockets [ 785.885632] ? get_pid_task+0xf4/0x190 executing program executing program [ 785.885648] ? mark_held_locks+0xf0/0xf0 [ 785.885662] ? proc_fail_nth_write+0x95/0x1d0 [ 785.885676] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 785.885688] ? __fdget_pos+0x26f/0x310 [ 785.885708] block_ioctl+0xe9/0x130 [ 785.895551] block nbd5: shutting down sockets [ 785.898700] ? blkdev_fallocate+0x3f0/0x3f0 [ 785.898716] do_vfs_ioctl+0xcdb/0x12e0 [ 785.898732] ? lock_downgrade+0x720/0x720 [ 785.898747] ? check_preemption_disabled+0x41/0x280 [ 785.898760] ? ioctl_preallocate+0x200/0x200 [ 785.898775] ? __fget+0x356/0x510 [ 785.940595] block nbd1: shutting down sockets [ 785.940640] ? do_dup2+0x450/0x450 [ 785.969407] ? vfs_write+0x393/0x540 [ 785.973114] ? fput+0x2b/0x190 [ 785.976303] ksys_ioctl+0x9b/0xc0 [ 785.979755] __x64_sys_ioctl+0x6f/0xb0 [ 785.983620] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 785.988183] do_syscall_64+0xf9/0x620 [ 785.991974] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 785.997142] RIP: 0033:0x7f03750e1089 [ 786.000839] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 786.019728] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 786.027423] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 786.034681] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 786.041937] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 786.049183] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 786.056438] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 executing program executing program executing program executing program [ 786.066105] kobject_add_internal failed for cpu1 (error: -12 parent: 0) [ 786.077678] block nbd2: shutting down sockets [ 786.091338] block nbd3: Could not allocate knbd recv work queue. [ 786.098480] block nbd3: shutting down sockets [ 786.121014] block nbd2: Device being setup by another task [ 786.130800] block nbd5: Device being setup by another task [ 786.133646] block nbd1: Device being setup by another task [ 786.138712] FAULT_INJECTION: forcing a failure. [ 786.138712] name failslab, interval 1, probability 0, space 0, times 0 [ 786.154303] FAULT_INJECTION: forcing a failure. [ 786.154303] name failslab, interval 1, probability 0, space 0, times 0 [ 786.160944] block nbd2: Device being setup by another task executing program [ 786.170735] CPU: 1 PID: 9923 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 786.179046] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 786.188391] Call Trace: [ 786.190973] dump_stack+0x1fc/0x2ef [ 786.194599] should_fail.cold+0xa/0xf [ 786.198394] ? setup_fault_attr+0x200/0x200 [ 786.202711] ? lock_acquire+0x170/0x3c0 [ 786.206679] __should_failslab+0x115/0x180 [ 786.210906] should_failslab+0x5/0x10 [ 786.214700] kmem_cache_alloc_trace+0x284/0x380 [ 786.219360] ? wait_for_completion_io+0x10/0x10 [ 786.224023] ? kobj_ns_initial+0x90/0x90 [ 786.228081] call_usermodehelper_setup+0x84/0x300 [ 786.232925] kobject_uevent_env+0xe83/0x1480 [ 786.237331] ? nbd_size_update+0x28a/0x660 [ 786.241557] ? queue_work_on+0x11a/0x1f0 [ 786.245614] nbd_start_device+0x811/0xd60 [ 786.249760] nbd_ioctl+0x62c/0xbe0 [ 786.253300] ? _copy_from_user+0xd2/0x130 [ 786.257440] ? nbd_disconnect_and_put+0x190/0x190 [ 786.262282] ? __lock_acquire+0x6de/0x3ff0 [ 786.266521] ? nbd_disconnect_and_put+0x190/0x190 [ 786.271366] blkdev_ioctl+0x5cb/0x1a80 [ 786.275250] ? blkpg_ioctl+0x9d0/0x9d0 [ 786.279138] ? get_pid_task+0xf4/0x190 [ 786.283017] ? mark_held_locks+0xf0/0xf0 [ 786.287072] ? proc_fail_nth_write+0x95/0x1d0 [ 786.291555] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 786.296473] ? __fdget_pos+0x26f/0x310 [ 786.300360] block_ioctl+0xe9/0x130 [ 786.303978] ? blkdev_fallocate+0x3f0/0x3f0 [ 786.308300] do_vfs_ioctl+0xcdb/0x12e0 [ 786.312188] ? lock_downgrade+0x720/0x720 [ 786.316330] ? check_preemption_disabled+0x41/0x280 [ 786.321423] ? ioctl_preallocate+0x200/0x200 [ 786.325824] ? __fget+0x356/0x510 [ 786.329265] ? do_dup2+0x450/0x450 [ 786.332799] ? vfs_write+0x393/0x540 [ 786.335007] FAULT_INJECTION: forcing a failure. [ 786.335007] name failslab, interval 1, probability 0, space 0, times 0 [ 786.336503] ? fput+0x2b/0x190 [ 786.336524] ksys_ioctl+0x9b/0xc0 [ 786.336540] __x64_sys_ioctl+0x6f/0xb0 [ 786.336554] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 786.336567] do_syscall_64+0xf9/0x620 [ 786.336587] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 786.371906] RIP: 0033:0x7f03750e1089 [ 786.375615] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 786.394515] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 786.402213] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 786.409481] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 786.416738] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 786.423995] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 786.431253] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 786.438527] CPU: 0 PID: 9924 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 786.446402] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 786.455744] Call Trace: [ 786.458334] dump_stack+0x1fc/0x2ef [ 786.461960] should_fail.cold+0xa/0xf [ 786.465754] ? setup_fault_attr+0x200/0x200 [ 786.470064] ? lock_acquire+0x170/0x3c0 [ 786.474029] __should_failslab+0x115/0x180 [ 786.478252] should_failslab+0x5/0x10 [ 786.482042] kmem_cache_alloc_trace+0x284/0x380 [ 786.486700] ? wait_for_completion_io+0x10/0x10 [ 786.491361] ? kobj_ns_initial+0x90/0x90 [ 786.495414] call_usermodehelper_setup+0x84/0x300 [ 786.500249] kobject_uevent_env+0xe83/0x1480 [ 786.504658] ? nbd_size_update+0x28a/0x660 [ 786.508878] ? queue_work_on+0x11a/0x1f0 [ 786.512928] nbd_start_device+0x811/0xd60 [ 786.517069] nbd_ioctl+0x62c/0xbe0 [ 786.520599] ? _copy_from_user+0xd2/0x130 [ 786.524736] ? nbd_disconnect_and_put+0x190/0x190 [ 786.529574] ? __lock_acquire+0x6de/0x3ff0 [ 786.533802] ? nbd_disconnect_and_put+0x190/0x190 [ 786.538632] blkdev_ioctl+0x5cb/0x1a80 [ 786.542511] ? blkpg_ioctl+0x9d0/0x9d0 [ 786.546387] ? get_pid_task+0xf4/0x190 [ 786.550268] ? mark_held_locks+0xf0/0xf0 [ 786.554317] ? proc_fail_nth_write+0x95/0x1d0 [ 786.558808] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 786.563723] ? __fdget_pos+0x26f/0x310 [ 786.567604] block_ioctl+0xe9/0x130 [ 786.571216] ? blkdev_fallocate+0x3f0/0x3f0 [ 786.575523] do_vfs_ioctl+0xcdb/0x12e0 [ 786.579397] ? lock_downgrade+0x720/0x720 [ 786.583536] ? check_preemption_disabled+0x41/0x280 [ 786.588541] ? ioctl_preallocate+0x200/0x200 [ 786.592939] ? __fget+0x356/0x510 [ 786.596382] ? do_dup2+0x450/0x450 [ 786.599907] ? vfs_write+0x393/0x540 [ 786.603615] ? fput+0x2b/0x190 [ 786.606799] ksys_ioctl+0x9b/0xc0 [ 786.610243] __x64_sys_ioctl+0x6f/0xb0 [ 786.614120] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 786.618690] do_syscall_64+0xf9/0x620 [ 786.622484] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 786.627678] RIP: 0033:0x7f03750e1089 [ 786.631378] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 786.650274] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 786.657967] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 786.665221] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 786.672473] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 786.679726] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 786.686979] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 786.694253] CPU: 1 PID: 9931 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 786.702137] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 786.711486] Call Trace: [ 786.714073] dump_stack+0x1fc/0x2ef [ 786.717702] should_fail.cold+0xa/0xf executing program executing program [ 786.721096] block nbd4: shutting down sockets [ 786.721501] ? setup_fault_attr+0x200/0x200 [ 786.726239] block nbd0: shutting down sockets [ 786.730276] ? lock_acquire+0x170/0x3c0 [ 786.730297] __should_failslab+0x115/0x180 [ 786.730315] should_failslab+0x5/0x10 [ 786.730328] kmem_cache_alloc+0x277/0x370 [ 786.730343] skb_clone+0x151/0x3d0 [ 786.754442] netlink_broadcast_filtered+0x8e5/0xbc0 [ 786.759459] netlink_broadcast+0x35/0x40 [ 786.763511] kobject_uevent_env+0xa56/0x1480 [ 786.767903] ? nbd_size_update+0x28a/0x660 [ 786.772119] ? queue_work_on+0x11a/0x1f0 [ 786.776160] nbd_start_device+0x811/0xd60 [ 786.780290] nbd_ioctl+0x62c/0xbe0 [ 786.783822] ? _copy_from_user+0xd2/0x130 [ 786.787960] ? nbd_disconnect_and_put+0x190/0x190 [ 786.792801] ? __lock_acquire+0x6de/0x3ff0 [ 786.797034] ? nbd_disconnect_and_put+0x190/0x190 [ 786.801864] blkdev_ioctl+0x5cb/0x1a80 [ 786.805741] ? blkpg_ioctl+0x9d0/0x9d0 [ 786.809619] ? get_pid_task+0xf4/0x190 [ 786.813488] ? mark_held_locks+0xf0/0xf0 [ 786.817535] ? proc_fail_nth_write+0x95/0x1d0 [ 786.822031] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 786.826955] ? __fdget_pos+0x26f/0x310 [ 786.830837] block_ioctl+0xe9/0x130 [ 786.834450] ? blkdev_fallocate+0x3f0/0x3f0 [ 786.838757] do_vfs_ioctl+0xcdb/0x12e0 [ 786.842625] ? lock_downgrade+0x720/0x720 [ 786.846754] ? check_preemption_disabled+0x41/0x280 [ 786.851765] ? ioctl_preallocate+0x200/0x200 [ 786.856166] ? __fget+0x356/0x510 [ 786.859604] ? do_dup2+0x450/0x450 [ 786.863122] ? vfs_write+0x393/0x540 [ 786.866815] ? fput+0x2b/0x190 [ 786.870005] ksys_ioctl+0x9b/0xc0 [ 786.873440] __x64_sys_ioctl+0x6f/0xb0 [ 786.877308] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 786.881878] do_syscall_64+0xf9/0x620 [ 786.885667] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 786.890837] RIP: 0033:0x7f03750e1089 [ 786.894529] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 786.913406] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 786.921100] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 786.928347] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 786.935594] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 786.942844] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 786.950098] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 786.960008] FAULT_INJECTION: forcing a failure. [ 786.960008] name failslab, interval 1, probability 0, space 0, times 0 executing program [ 786.974287] FAULT_INJECTION: forcing a failure. [ 786.974287] name failslab, interval 1, probability 0, space 0, times 0 [ 786.979187] block nbd3: shutting down sockets [ 786.985765] CPU: 1 PID: 9921 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 786.997926] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 787.007274] Call Trace: [ 787.009855] dump_stack+0x1fc/0x2ef [ 787.013484] should_fail.cold+0xa/0xf [ 787.017281] ? setup_fault_attr+0x200/0x200 [ 787.021592] ? lock_acquire+0x170/0x3c0 [ 787.025557] __should_failslab+0x115/0x180 [ 787.029783] should_failslab+0x5/0x10 [ 787.033577] __kmalloc_track_caller+0x2a6/0x3c0 [ 787.038242] ? kstrdup_const+0x53/0x80 [ 787.042125] kstrdup+0x36/0x70 [ 787.045311] kstrdup_const+0x53/0x80 [ 787.049102] __kernfs_new_node+0x9b/0x680 [ 787.053243] ? kfree+0xcc/0x210 [ 787.056518] ? kobject_add+0x10d/0x1c0 [ 787.060396] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 787.065141] ? nbd_start_device+0x1f2/0xd60 [ 787.069452] ? nbd_ioctl+0x62c/0xbe0 [ 787.073159] ? blkdev_ioctl+0x5cb/0x1a80 [ 787.077219] ? do_vfs_ioctl+0xcdb/0x12e0 [ 787.081274] ? __x64_sys_ioctl+0x6f/0xb0 [ 787.085330] ? do_syscall_64+0xf9/0x620 [ 787.089296] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 787.094658] ? debug_check_no_obj_freed+0x201/0x490 [ 787.099679] kernfs_create_dir_ns+0x9e/0x230 [ 787.104082] sysfs_create_dir_ns+0x127/0x280 [ 787.108488] ? sysfs_create_mount_point+0xb0/0xb0 [ 787.113325] ? mark_held_locks+0xa6/0xf0 [ 787.117377] ? kfree+0x110/0x210 [ 787.120738] ? kfree_const+0x51/0x60 [ 787.124445] kobject_add_internal+0x2a5/0x9c0 [ 787.128934] kobject_add+0x150/0x1c0 [ 787.132652] ? kset_create_and_add+0x1a0/0x1a0 [ 787.137222] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 787.141897] ? lock_downgrade+0x720/0x720 [ 787.146046] ? kernfs_put.part.0+0x225/0x590 [ 787.150466] blk_mq_register_hctx+0x23c/0x2c0 [ 787.154979] blk_mq_sysfs_register+0x143/0x1c0 [ 787.159566] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 787.164592] ? workqueue_sysfs_register+0x391/0x3e0 [ 787.169613] ? blk_mq_init_queue+0xa0/0xa0 [ 787.173849] nbd_start_device+0x1f2/0xd60 [ 787.177992] ? security_capable+0x8f/0xc0 [ 787.182138] nbd_ioctl+0x62c/0xbe0 [ 787.185670] ? _copy_from_user+0xd2/0x130 [ 787.189808] ? nbd_disconnect_and_put+0x190/0x190 [ 787.194650] ? __lock_acquire+0x6de/0x3ff0 [ 787.198884] ? nbd_disconnect_and_put+0x190/0x190 [ 787.203722] blkdev_ioctl+0x5cb/0x1a80 [ 787.207602] ? blkpg_ioctl+0x9d0/0x9d0 [ 787.211483] ? get_pid_task+0xf4/0x190 [ 787.215361] ? mark_held_locks+0xf0/0xf0 [ 787.219407] ? proc_fail_nth_write+0x95/0x1d0 [ 787.223897] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 787.228822] ? __fdget_pos+0x26f/0x310 [ 787.232708] block_ioctl+0xe9/0x130 [ 787.236324] ? blkdev_fallocate+0x3f0/0x3f0 [ 787.240670] do_vfs_ioctl+0xcdb/0x12e0 [ 787.244550] ? lock_downgrade+0x720/0x720 [ 787.248701] ? check_preemption_disabled+0x41/0x280 [ 787.253705] ? ioctl_preallocate+0x200/0x200 [ 787.258102] ? __fget+0x356/0x510 [ 787.261548] ? do_dup2+0x450/0x450 [ 787.265079] ? vfs_write+0x393/0x540 [ 787.268824] ? fput+0x2b/0x190 [ 787.272011] ksys_ioctl+0x9b/0xc0 [ 787.275457] __x64_sys_ioctl+0x6f/0xb0 [ 787.279339] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 787.283912] do_syscall_64+0xf9/0x620 [ 787.287706] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 787.292881] RIP: 0033:0x7f03750e1089 [ 787.296589] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 787.315623] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 787.323317] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 787.330575] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 787.337834] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 787.345091] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 787.352346] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 787.359622] CPU: 0 PID: 9922 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 787.367509] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 787.370675] kobject_add_internal failed for cpu1 (error: -12 parent: 0) [ 787.376853] Call Trace: [ 787.386162] dump_stack+0x1fc/0x2ef [ 787.389794] should_fail.cold+0xa/0xf [ 787.393595] ? setup_fault_attr+0x200/0x200 [ 787.397925] ? lock_acquire+0x170/0x3c0 [ 787.401908] __should_failslab+0x115/0x180 [ 787.402644] block nbd5: shutting down sockets [ 787.406139] should_failslab+0x5/0x10 [ 787.414401] __kmalloc_track_caller+0x2a6/0x3c0 [ 787.419062] ? kstrdup_const+0x53/0x80 [ 787.422928] kstrdup+0x36/0x70 [ 787.426104] kstrdup_const+0x53/0x80 [ 787.429799] __kernfs_new_node+0x9b/0x680 [ 787.433926] ? kfree+0xcc/0x210 [ 787.437187] ? kobject_add+0x10d/0x1c0 [ 787.441053] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 787.445789] ? nbd_start_device+0x1f2/0xd60 [ 787.450086] ? nbd_ioctl+0x62c/0xbe0 [ 787.453778] ? blkdev_ioctl+0x5cb/0x1a80 [ 787.457815] ? do_vfs_ioctl+0xcdb/0x12e0 [ 787.461853] ? __x64_sys_ioctl+0x6f/0xb0 [ 787.465891] ? do_syscall_64+0xf9/0x620 [ 787.469843] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 787.475185] ? debug_check_no_obj_freed+0x201/0x490 [ 787.480183] kernfs_create_dir_ns+0x9e/0x230 [ 787.484579] sysfs_create_dir_ns+0x127/0x280 [ 787.488963] ? sysfs_create_mount_point+0xb0/0xb0 [ 787.493788] ? mark_held_locks+0xa6/0xf0 [ 787.497827] ? kfree+0x110/0x210 [ 787.501179] ? kfree_const+0x51/0x60 [ 787.504872] kobject_add_internal+0x2a5/0x9c0 [ 787.509351] kobject_add+0x150/0x1c0 [ 787.513047] ? kset_create_and_add+0x1a0/0x1a0 [ 787.517604] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 787.522252] ? lock_downgrade+0x720/0x720 [ 787.526377] ? kernfs_put.part.0+0x225/0x590 [ 787.530766] blk_mq_register_hctx+0x23c/0x2c0 [ 787.535242] blk_mq_sysfs_register+0x143/0x1c0 [ 787.539807] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 787.544804] ? workqueue_sysfs_register+0x391/0x3e0 [ 787.549802] ? blk_mq_init_queue+0xa0/0xa0 [ 787.554018] nbd_start_device+0x1f2/0xd60 [ 787.558145] ? security_capable+0x8f/0xc0 [ 787.562276] nbd_ioctl+0x62c/0xbe0 [ 787.565799] ? _copy_from_user+0xd2/0x130 [ 787.569927] ? nbd_disconnect_and_put+0x190/0x190 [ 787.574754] ? __lock_acquire+0x6de/0x3ff0 [ 787.578968] ? nbd_disconnect_and_put+0x190/0x190 [ 787.583788] blkdev_ioctl+0x5cb/0x1a80 [ 787.587657] ? blkpg_ioctl+0x9d0/0x9d0 [ 787.591526] ? get_pid_task+0xf4/0x190 [ 787.595393] ? mark_held_locks+0xf0/0xf0 [ 787.599435] ? proc_fail_nth_write+0x95/0x1d0 [ 787.603907] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 787.608814] ? __fdget_pos+0x26f/0x310 [ 787.612700] block_ioctl+0xe9/0x130 [ 787.616304] ? blkdev_fallocate+0x3f0/0x3f0 [ 787.620605] do_vfs_ioctl+0xcdb/0x12e0 [ 787.624478] ? lock_downgrade+0x720/0x720 [ 787.628604] ? check_preemption_disabled+0x41/0x280 [ 787.633598] ? ioctl_preallocate+0x200/0x200 [ 787.637989] ? __fget+0x356/0x510 [ 787.641421] ? do_dup2+0x450/0x450 [ 787.644939] ? vfs_write+0x393/0x540 [ 787.648629] ? fput+0x2b/0x190 [ 787.651802] ksys_ioctl+0x9b/0xc0 [ 787.655237] __x64_sys_ioctl+0x6f/0xb0 [ 787.659102] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 787.663665] do_syscall_64+0xf9/0x620 [ 787.667448] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 787.672614] RIP: 0033:0x7f03750e1089 [ 787.676306] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 787.695183] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 787.702872] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 787.710119] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 787.717364] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 787.724611] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 787.731856] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 787.750771] block nbd2: Device being setup by another task [ 787.756608] block nbd2: Could not allocate knbd recv work queue. [ 787.763913] block nbd4: Device being setup by another task [ 787.769746] block nbd4: Could not allocate knbd recv work queue. executing program executing program [ 787.776198] block nbd0: Device being setup by another task [ 787.783270] block nbd0: Could not allocate knbd recv work queue. [ 787.786907] kobject_add_internal failed for cpu1 (error: -12 parent: 0) [ 787.793006] block nbd2: shutting down sockets [ 787.802143] block nbd4: shutting down sockets [ 787.806821] block nbd1: shutting down sockets [ 787.807357] block nbd0: shutting down sockets [ 787.816098] block nbd3: Device being setup by another task [ 787.822096] block nbd3: Could not allocate knbd recv work queue. executing program executing program executing program executing program [ 787.831837] block nbd3: shutting down sockets [ 787.922274] FAULT_INJECTION: forcing a failure. [ 787.922274] name failslab, interval 1, probability 0, space 0, times 0 [ 787.922731] FAULT_INJECTION: forcing a failure. [ 787.922731] name failslab, interval 1, probability 0, space 0, times 0 [ 787.934121] CPU: 1 PID: 9967 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 787.945449] FAULT_INJECTION: forcing a failure. [ 787.945449] name failslab, interval 1, probability 0, space 0, times 0 [ 787.952595] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 787.952600] Call Trace: [ 787.952618] dump_stack+0x1fc/0x2ef [ 787.952642] should_fail.cold+0xa/0xf [ 787.952659] ? setup_fault_attr+0x200/0x200 [ 787.952681] ? lock_acquire+0x170/0x3c0 [ 787.972065] FAULT_INJECTION: forcing a failure. [ 787.972065] name failslab, interval 1, probability 0, space 0, times 0 [ 787.973182] __should_failslab+0x115/0x180 [ 787.973200] should_failslab+0x5/0x10 [ 787.973218] kmem_cache_alloc+0x277/0x370 [ 788.014717] __d_alloc+0x2b/0xa10 [ 788.018166] ? __bpf_address_lookup+0x330/0x330 [ 788.022823] ? check_preemption_disabled+0x41/0x280 [ 788.027834] d_alloc+0x4a/0x230 [ 788.031108] d_alloc_parallel+0xeb/0x19e0 [ 788.035252] ? mark_held_locks+0xf0/0xf0 [ 788.039303] ? __d_lookup_rcu+0x6b0/0x6b0 [ 788.043442] ? mark_held_locks+0xf0/0xf0 [ 788.047492] ? __lockdep_init_map+0x100/0x5a0 [ 788.051983] ? __lockdep_init_map+0x100/0x5a0 [ 788.056483] __lookup_slow+0x18d/0x4a0 [ 788.060372] ? check_preemption_disabled+0x41/0x280 [ 788.065383] ? follow_dotdot_rcu+0x1040/0x1040 [ 788.066445] FAULT_INJECTION: forcing a failure. [ 788.066445] name failslab, interval 1, probability 0, space 0, times 0 [ 788.069963] ? __d_lookup+0x411/0x710 [ 788.069986] ? d_lookup+0x18e/0x250 [ 788.070009] lookup_one_len+0x163/0x190 [ 788.092510] ? try_lookup_one_len+0x180/0x180 [ 788.097002] start_creating+0xc9/0x220 [ 788.100884] __debugfs_create_file+0x5e/0x480 [ 788.105380] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 788.110564] ? kvm_clock_get_cycles+0x14/0x30 [ 788.115056] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 788.119894] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 788.124815] ? init_srcu_struct_fields+0xca6/0x1190 [ 788.129823] ? srcu_reschedule+0x120/0x120 [ 788.134055] ? __raw_spin_lock_init+0x28/0x100 [ 788.138642] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 788.143391] ? nbd_clear_que+0x160/0x160 [ 788.147449] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 788.152453] ? workqueue_sysfs_register+0x391/0x3e0 [ 788.157461] ? blk_mq_init_queue+0xa0/0xa0 [ 788.161687] ? apparmor_sb_mount+0x970/0x970 [ 788.166089] nbd_start_device+0x1f2/0xd60 [ 788.170232] ? security_capable+0x8f/0xc0 [ 788.174371] nbd_ioctl+0x62c/0xbe0 [ 788.177903] ? _copy_from_user+0xd2/0x130 [ 788.182039] ? nbd_disconnect_and_put+0x190/0x190 [ 788.186885] ? __lock_acquire+0x6de/0x3ff0 [ 788.191109] ? nbd_disconnect_and_put+0x190/0x190 [ 788.195941] blkdev_ioctl+0x5cb/0x1a80 [ 788.199815] ? blkpg_ioctl+0x9d0/0x9d0 [ 788.203694] ? get_pid_task+0xf4/0x190 [ 788.207570] ? mark_held_locks+0xf0/0xf0 [ 788.211630] ? proc_fail_nth_write+0x95/0x1d0 [ 788.216114] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 788.221033] ? __fdget_pos+0x26f/0x310 [ 788.224919] block_ioctl+0xe9/0x130 [ 788.228552] ? blkdev_fallocate+0x3f0/0x3f0 [ 788.232875] do_vfs_ioctl+0xcdb/0x12e0 [ 788.236759] ? lock_downgrade+0x720/0x720 [ 788.240898] ? check_preemption_disabled+0x41/0x280 [ 788.245906] ? ioctl_preallocate+0x200/0x200 [ 788.250305] ? __fget+0x356/0x510 [ 788.253759] ? do_dup2+0x450/0x450 [ 788.257293] ? vfs_write+0x393/0x540 [ 788.261008] ? fput+0x2b/0x190 [ 788.264203] ksys_ioctl+0x9b/0xc0 [ 788.267651] __x64_sys_ioctl+0x6f/0xb0 [ 788.271549] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 788.276120] do_syscall_64+0xf9/0x620 [ 788.279913] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 788.285089] RIP: 0033:0x7f03750e1089 [ 788.288790] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 788.307769] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 788.315477] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 788.322741] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 788.329997] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 788.337260] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 788.344518] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 788.351797] CPU: 0 PID: 9980 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 788.359681] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 788.369029] Call Trace: [ 788.371619] dump_stack+0x1fc/0x2ef [ 788.375248] should_fail.cold+0xa/0xf [ 788.379052] ? setup_fault_attr+0x200/0x200 [ 788.383376] ? lock_acquire+0x170/0x3c0 [ 788.387356] __should_failslab+0x115/0x180 [ 788.391600] should_failslab+0x5/0x10 [ 788.395397] kmem_cache_alloc_trace+0x284/0x380 [ 788.400062] ? wait_for_completion_io+0x10/0x10 [ 788.404721] ? kobj_ns_initial+0x90/0x90 [ 788.408777] call_usermodehelper_setup+0x84/0x300 [ 788.413612] kobject_uevent_env+0xe83/0x1480 [ 788.418019] ? nbd_size_update+0x28a/0x660 [ 788.422252] ? queue_work_on+0x11a/0x1f0 [ 788.426309] nbd_start_device+0x811/0xd60 [ 788.430450] nbd_ioctl+0x62c/0xbe0 [ 788.433979] ? _copy_from_user+0xd2/0x130 [ 788.438120] ? nbd_disconnect_and_put+0x190/0x190 [ 788.442958] ? __lock_acquire+0x6de/0x3ff0 [ 788.447188] ? nbd_disconnect_and_put+0x190/0x190 [ 788.452018] blkdev_ioctl+0x5cb/0x1a80 [ 788.455895] ? blkpg_ioctl+0x9d0/0x9d0 [ 788.459773] ? get_pid_task+0xf4/0x190 [ 788.463648] ? mark_held_locks+0xf0/0xf0 [ 788.467696] ? proc_fail_nth_write+0x95/0x1d0 [ 788.468448] block nbd5: shutting down sockets [ 788.472182] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 788.472196] ? __fdget_pos+0x26f/0x310 [ 788.472218] block_ioctl+0xe9/0x130 [ 788.472230] ? blkdev_fallocate+0x3f0/0x3f0 [ 788.472243] do_vfs_ioctl+0xcdb/0x12e0 [ 788.472257] ? lock_downgrade+0x720/0x720 [ 788.472273] ? check_preemption_disabled+0x41/0x280 [ 788.506425] ? ioctl_preallocate+0x200/0x200 [ 788.510826] ? __fget+0x356/0x510 [ 788.514272] ? do_dup2+0x450/0x450 [ 788.517804] ? vfs_write+0x393/0x540 [ 788.521520] ? fput+0x2b/0x190 [ 788.524705] ksys_ioctl+0x9b/0xc0 [ 788.528150] __x64_sys_ioctl+0x6f/0xb0 [ 788.532026] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 788.536600] do_syscall_64+0xf9/0x620 [ 788.540400] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 788.545576] RIP: 0033:0x7f03750e1089 [ 788.549280] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 executing program [ 788.568169] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 788.575864] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 788.583121] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 788.590376] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 788.597629] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 788.604883] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 788.612164] CPU: 1 PID: 9972 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 788.620048] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 788.629390] Call Trace: [ 788.631972] dump_stack+0x1fc/0x2ef [ 788.635594] should_fail.cold+0xa/0xf [ 788.639387] ? setup_fault_attr+0x200/0x200 [ 788.643700] ? lock_acquire+0x170/0x3c0 [ 788.647667] __should_failslab+0x115/0x180 [ 788.651892] should_failslab+0x5/0x10 [ 788.655680] kmem_cache_alloc_trace+0x284/0x380 [ 788.660345] ? wait_for_completion_io+0x10/0x10 [ 788.665002] ? kobj_ns_initial+0x90/0x90 [ 788.669064] call_usermodehelper_setup+0x84/0x300 [ 788.673914] kobject_uevent_env+0xe83/0x1480 [ 788.678316] ? nbd_size_update+0x28a/0x660 [ 788.682539] ? queue_work_on+0x11a/0x1f0 [ 788.686606] nbd_start_device+0x811/0xd60 [ 788.690753] nbd_ioctl+0x62c/0xbe0 [ 788.694295] ? _copy_from_user+0xd2/0x130 [ 788.698437] ? nbd_disconnect_and_put+0x190/0x190 [ 788.703279] ? __lock_acquire+0x6de/0x3ff0 [ 788.707690] ? nbd_disconnect_and_put+0x190/0x190 [ 788.712529] blkdev_ioctl+0x5cb/0x1a80 [ 788.716415] ? blkpg_ioctl+0x9d0/0x9d0 [ 788.720298] ? get_pid_task+0xf4/0x190 [ 788.724178] ? mark_held_locks+0xf0/0xf0 [ 788.728229] ? proc_fail_nth_write+0x95/0x1d0 [ 788.732714] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 788.737632] ? __fdget_pos+0x26f/0x310 [ 788.741520] block_ioctl+0xe9/0x130 [ 788.745136] ? blkdev_fallocate+0x3f0/0x3f0 [ 788.749454] do_vfs_ioctl+0xcdb/0x12e0 [ 788.753331] ? lock_downgrade+0x720/0x720 [ 788.757472] ? check_preemption_disabled+0x41/0x280 [ 788.762478] ? ioctl_preallocate+0x200/0x200 [ 788.766880] ? __fget+0x356/0x510 [ 788.770322] ? do_dup2+0x450/0x450 [ 788.773851] ? vfs_write+0x393/0x540 [ 788.777552] ? fput+0x2b/0x190 [ 788.780737] ksys_ioctl+0x9b/0xc0 [ 788.784182] __x64_sys_ioctl+0x6f/0xb0 [ 788.788064] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 788.792636] do_syscall_64+0xf9/0x620 [ 788.796524] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 788.801702] RIP: 0033:0x7f03750e1089 [ 788.805413] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 788.824299] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 788.831994] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 788.839249] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 788.846507] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 788.853764] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 788.861021] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 788.868339] CPU: 0 PID: 9965 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 788.876226] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 788.885574] Call Trace: [ 788.888165] dump_stack+0x1fc/0x2ef [ 788.891800] should_fail.cold+0xa/0xf [ 788.895604] ? setup_fault_attr+0x200/0x200 [ 788.899927] ? lock_acquire+0x170/0x3c0 [ 788.903908] __should_failslab+0x115/0x180 [ 788.908152] should_failslab+0x5/0x10 [ 788.909019] block nbd3: shutting down sockets [ 788.911949] kmem_cache_alloc+0x277/0x370 [ 788.911969] __d_alloc+0x2b/0xa10 [ 788.911983] ? __bpf_address_lookup+0x330/0x330 [ 788.912005] ? check_preemption_disabled+0x41/0x280 [ 788.912021] d_alloc+0x4a/0x230 [ 788.916702] block nbd4: shutting down sockets [ 788.920647] d_alloc_parallel+0xeb/0x19e0 [ 788.920673] ? mark_held_locks+0xf0/0xf0 [ 788.920690] ? __d_lookup_rcu+0x6b0/0x6b0 [ 788.920707] ? mark_held_locks+0xf0/0xf0 [ 788.920721] ? __lockdep_init_map+0x100/0x5a0 [ 788.920736] ? __lockdep_init_map+0x100/0x5a0 [ 788.966906] __lookup_slow+0x18d/0x4a0 [ 788.970788] ? check_preemption_disabled+0x41/0x280 [ 788.975793] ? follow_dotdot_rcu+0x1040/0x1040 [ 788.980367] ? __d_lookup+0x411/0x710 [ 788.984165] ? d_lookup+0x18e/0x250 [ 788.987784] lookup_one_len+0x163/0x190 [ 788.991754] ? try_lookup_one_len+0x180/0x180 [ 788.996244] start_creating+0xc9/0x220 [ 789.000120] __debugfs_create_file+0x5e/0x480 [ 789.004614] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 789.009800] ? kvm_clock_get_cycles+0x14/0x30 [ 789.014287] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 789.019126] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 789.024041] ? init_srcu_struct_fields+0xca6/0x1190 [ 789.029054] ? srcu_reschedule+0x120/0x120 [ 789.033281] ? __raw_spin_lock_init+0x28/0x100 [ 789.037856] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 789.042602] ? nbd_clear_que+0x160/0x160 [ 789.046657] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 789.051669] ? workqueue_sysfs_register+0x391/0x3e0 [ 789.056680] ? blk_mq_init_queue+0xa0/0xa0 [ 789.060909] ? apparmor_sb_mount+0x970/0x970 [ 789.065314] nbd_start_device+0x1f2/0xd60 [ 789.069452] ? security_capable+0x8f/0xc0 [ 789.073593] nbd_ioctl+0x62c/0xbe0 [ 789.077121] ? _copy_from_user+0xd2/0x130 [ 789.081258] ? nbd_disconnect_and_put+0x190/0x190 [ 789.086096] ? __lock_acquire+0x6de/0x3ff0 [ 789.090322] ? nbd_disconnect_and_put+0x190/0x190 [ 789.095238] blkdev_ioctl+0x5cb/0x1a80 [ 789.099123] ? blkpg_ioctl+0x9d0/0x9d0 [ 789.103006] ? get_pid_task+0xf4/0x190 [ 789.106884] ? mark_held_locks+0xf0/0xf0 [ 789.110931] ? proc_fail_nth_write+0x95/0x1d0 [ 789.115415] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 789.120336] ? __fdget_pos+0x26f/0x310 [ 789.124220] block_ioctl+0xe9/0x130 [ 789.127844] ? blkdev_fallocate+0x3f0/0x3f0 [ 789.132159] do_vfs_ioctl+0xcdb/0x12e0 [ 789.136038] ? lock_downgrade+0x720/0x720 [ 789.140181] ? check_preemption_disabled+0x41/0x280 [ 789.145194] ? ioctl_preallocate+0x200/0x200 [ 789.149595] ? __fget+0x356/0x510 [ 789.153046] ? do_dup2+0x450/0x450 [ 789.156572] ? vfs_write+0x393/0x540 [ 789.160276] ? fput+0x2b/0x190 [ 789.163464] ksys_ioctl+0x9b/0xc0 [ 789.166908] __x64_sys_ioctl+0x6f/0xb0 [ 789.170786] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 789.175355] do_syscall_64+0xf9/0x620 [ 789.179150] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 789.184325] RIP: 0033:0x7f03750e1089 [ 789.188027] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 789.206913] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 789.214618] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 789.221873] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 789.229127] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 789.236384] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 789.243643] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 789.250923] CPU: 1 PID: 9974 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 789.258812] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 789.263612] block nbd1: shutting down sockets [ 789.268156] Call Trace: [ 789.268176] dump_stack+0x1fc/0x2ef [ 789.268193] should_fail.cold+0xa/0xf [ 789.282646] ? setup_fault_attr+0x200/0x200 [ 789.287081] ? lock_acquire+0x170/0x3c0 [ 789.291062] __should_failslab+0x115/0x180 [ 789.295306] should_failslab+0x5/0x10 [ 789.299109] kmem_cache_alloc_trace+0x284/0x380 [ 789.303778] ? wait_for_completion_io+0x10/0x10 [ 789.308448] ? kobj_ns_initial+0x90/0x90 [ 789.312514] call_usermodehelper_setup+0x84/0x300 [ 789.317363] kobject_uevent_env+0xe83/0x1480 [ 789.321778] ? nbd_size_update+0x28a/0x660 [ 789.326001] ? queue_work_on+0x11a/0x1f0 [ 789.330045] nbd_start_device+0x811/0xd60 [ 789.334193] nbd_ioctl+0x62c/0xbe0 [ 789.337725] ? _copy_from_user+0xd2/0x130 [ 789.341867] ? nbd_disconnect_and_put+0x190/0x190 [ 789.346706] ? __lock_acquire+0x6de/0x3ff0 [ 789.350926] ? nbd_disconnect_and_put+0x190/0x190 [ 789.355753] blkdev_ioctl+0x5cb/0x1a80 [ 789.359647] ? blkpg_ioctl+0x9d0/0x9d0 [ 789.363516] ? get_pid_task+0xf4/0x190 [ 789.367382] ? mark_held_locks+0xf0/0xf0 [ 789.371429] ? proc_fail_nth_write+0x95/0x1d0 [ 789.375910] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 789.380820] ? __fdget_pos+0x26f/0x310 [ 789.384691] block_ioctl+0xe9/0x130 [ 789.388298] ? blkdev_fallocate+0x3f0/0x3f0 [ 789.392597] do_vfs_ioctl+0xcdb/0x12e0 [ 789.396468] ? lock_downgrade+0x720/0x720 [ 789.400604] ? check_preemption_disabled+0x41/0x280 [ 789.405600] ? ioctl_preallocate+0x200/0x200 [ 789.409995] ? __fget+0x356/0x510 [ 789.413430] ? do_dup2+0x450/0x450 [ 789.416947] ? vfs_write+0x393/0x540 [ 789.420650] ? fput+0x2b/0x190 [ 789.423831] ksys_ioctl+0x9b/0xc0 [ 789.427265] __x64_sys_ioctl+0x6f/0xb0 [ 789.431131] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 789.435691] do_syscall_64+0xf9/0x620 [ 789.439472] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 789.444645] RIP: 0033:0x7f03750e1089 [ 789.448349] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 789.467229] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 executing program executing program [ 789.474916] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 789.482162] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 789.489410] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 789.496665] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 789.504005] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 789.515825] FAULT_INJECTION: forcing a failure. [ 789.515825] name failslab, interval 1, probability 0, space 0, times 0 executing program executing program executing program [ 789.528886] block nbd0: shutting down sockets [ 789.536367] CPU: 0 PID: 9969 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 789.540682] block nbd5: Device being setup by another task [ 789.544254] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 789.544259] Call Trace: [ 789.544279] dump_stack+0x1fc/0x2ef [ 789.544298] should_fail.cold+0xa/0xf [ 789.544317] ? setup_fault_attr+0x200/0x200 [ 789.551622] block nbd5: Could not allocate knbd recv work queue. [ 789.559261] ? lock_acquire+0x170/0x3c0 [ 789.559283] __should_failslab+0x115/0x180 [ 789.559304] should_failslab+0x5/0x10 [ 789.565360] block nbd5: shutting down sockets [ 789.565490] kmem_cache_alloc+0x277/0x370 [ 789.600214] __d_alloc+0x2b/0xa10 [ 789.603652] ? __bpf_address_lookup+0x330/0x330 [ 789.608311] ? check_preemption_disabled+0x41/0x280 [ 789.613317] d_alloc+0x4a/0x230 [ 789.616580] d_alloc_parallel+0xeb/0x19e0 [ 789.620816] ? mark_held_locks+0xf0/0xf0 [ 789.624868] ? __d_lookup_rcu+0x6b0/0x6b0 [ 789.629003] ? mark_held_locks+0xf0/0xf0 [ 789.633049] ? __lockdep_init_map+0x100/0x5a0 [ 789.637525] ? __lockdep_init_map+0x100/0x5a0 [ 789.642006] __lookup_slow+0x18d/0x4a0 [ 789.645877] ? check_preemption_disabled+0x41/0x280 [ 789.650876] ? follow_dotdot_rcu+0x1040/0x1040 [ 789.655443] ? __d_lookup+0x411/0x710 [ 789.659228] ? d_lookup+0x18e/0x250 [ 789.662851] lookup_one_len+0x163/0x190 [ 789.666819] ? try_lookup_one_len+0x180/0x180 [ 789.671311] start_creating+0xc9/0x220 [ 789.675197] __debugfs_create_file+0x5e/0x480 [ 789.679697] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 789.684868] ? kvm_clock_get_cycles+0x14/0x30 [ 789.689343] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 789.694180] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 789.699097] ? init_srcu_struct_fields+0xca6/0x1190 [ 789.704104] ? srcu_reschedule+0x120/0x120 [ 789.708329] ? __raw_spin_lock_init+0x28/0x100 [ 789.712902] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 789.717657] ? nbd_clear_que+0x160/0x160 [ 789.721702] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 789.726717] ? workqueue_sysfs_register+0x391/0x3e0 [ 789.731734] ? blk_mq_init_queue+0xa0/0xa0 [ 789.735959] ? apparmor_sb_mount+0x970/0x970 [ 789.740354] nbd_start_device+0x1f2/0xd60 [ 789.744658] ? security_capable+0x8f/0xc0 [ 789.748793] nbd_ioctl+0x62c/0xbe0 [ 789.752316] ? _copy_from_user+0xd2/0x130 [ 789.756459] ? nbd_disconnect_and_put+0x190/0x190 [ 789.761311] ? __lock_acquire+0x6de/0x3ff0 [ 789.765555] ? nbd_disconnect_and_put+0x190/0x190 [ 789.770377] blkdev_ioctl+0x5cb/0x1a80 [ 789.774254] ? blkpg_ioctl+0x9d0/0x9d0 [ 789.778125] ? get_pid_task+0xf4/0x190 [ 789.782002] ? mark_held_locks+0xf0/0xf0 [ 789.786049] ? proc_fail_nth_write+0x95/0x1d0 [ 789.790527] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 789.795493] ? __fdget_pos+0x26f/0x310 [ 789.799373] block_ioctl+0xe9/0x130 [ 789.802988] ? blkdev_fallocate+0x3f0/0x3f0 [ 789.807301] do_vfs_ioctl+0xcdb/0x12e0 [ 789.811183] ? lock_downgrade+0x720/0x720 [ 789.815324] ? check_preemption_disabled+0x41/0x280 [ 789.820325] ? ioctl_preallocate+0x200/0x200 [ 789.824716] ? __fget+0x356/0x510 [ 789.828152] ? do_dup2+0x450/0x450 [ 789.831683] ? vfs_write+0x393/0x540 [ 789.835378] ? fput+0x2b/0x190 [ 789.838558] ksys_ioctl+0x9b/0xc0 [ 789.841998] __x64_sys_ioctl+0x6f/0xb0 [ 789.845866] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 789.850430] do_syscall_64+0xf9/0x620 [ 789.854213] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 789.859387] RIP: 0033:0x7f03750e1089 [ 789.863089] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 789.881968] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 789.889655] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 789.896912] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 789.904170] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 789.911421] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 789.918670] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 executing program [ 789.936193] block nbd2: shutting down sockets [ 789.970615] block nbd1: Device being setup by another task [ 789.972428] FAULT_INJECTION: forcing a failure. [ 789.972428] name failslab, interval 1, probability 0, space 0, times 0 [ 789.990032] CPU: 0 PID: 9997 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 789.997919] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 790.007261] Call Trace: [ 790.009847] dump_stack+0x1fc/0x2ef [ 790.013462] should_fail.cold+0xa/0xf [ 790.017255] ? setup_fault_attr+0x200/0x200 [ 790.021575] ? lock_acquire+0x170/0x3c0 [ 790.025540] __should_failslab+0x115/0x180 [ 790.029763] should_failslab+0x5/0x10 [ 790.033544] kmem_cache_alloc_trace+0x284/0x380 [ 790.038198] ? wait_for_completion_io+0x10/0x10 [ 790.042865] ? kobj_ns_initial+0x90/0x90 [ 790.046912] call_usermodehelper_setup+0x84/0x300 [ 790.051743] kobject_uevent_env+0xe83/0x1480 [ 790.056145] ? nbd_size_update+0x28a/0x660 [ 790.060381] ? queue_work_on+0x11a/0x1f0 [ 790.064436] nbd_start_device+0x811/0xd60 [ 790.068577] nbd_ioctl+0x62c/0xbe0 [ 790.072100] ? _copy_from_user+0xd2/0x130 [ 790.076233] ? nbd_disconnect_and_put+0x190/0x190 [ 790.081060] ? __lock_acquire+0x6de/0x3ff0 [ 790.085275] ? nbd_disconnect_and_put+0x190/0x190 [ 790.090102] blkdev_ioctl+0x5cb/0x1a80 [ 790.093972] ? blkpg_ioctl+0x9d0/0x9d0 [ 790.097841] ? get_pid_task+0xf4/0x190 [ 790.101714] ? mark_held_locks+0xf0/0xf0 [ 790.105755] ? proc_fail_nth_write+0x95/0x1d0 [ 790.110234] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 790.115147] ? __fdget_pos+0x26f/0x310 [ 790.119020] block_ioctl+0xe9/0x130 [ 790.122631] ? blkdev_fallocate+0x3f0/0x3f0 [ 790.126946] do_vfs_ioctl+0xcdb/0x12e0 [ 790.130825] ? lock_downgrade+0x720/0x720 [ 790.134958] ? check_preemption_disabled+0x41/0x280 [ 790.139965] ? ioctl_preallocate+0x200/0x200 [ 790.144368] ? __fget+0x356/0x510 [ 790.147803] ? do_dup2+0x450/0x450 [ 790.151324] ? vfs_write+0x393/0x540 [ 790.155018] ? fput+0x2b/0x190 [ 790.158209] ksys_ioctl+0x9b/0xc0 [ 790.161651] __x64_sys_ioctl+0x6f/0xb0 [ 790.165520] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 790.170083] do_syscall_64+0xf9/0x620 [ 790.173867] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 790.179036] RIP: 0033:0x7f03750e1089 [ 790.182730] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 790.201638] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 790.209332] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 790.216581] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 790.223840] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 790.231095] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 790.238362] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 790.246948] block nbd4: shutting down sockets [ 790.250655] block nbd3: Device being setup by another task [ 790.257338] block nbd3: Could not allocate knbd recv work queue. [ 790.263672] block nbd0: Device being setup by another task [ 790.269476] block nbd0: Could not allocate knbd recv work queue. [ 790.275783] block nbd5: Device being setup by another task [ 790.277739] FAULT_INJECTION: forcing a failure. [ 790.277739] name failslab, interval 1, probability 0, space 0, times 0 [ 790.282536] block nbd5: Could not allocate knbd recv work queue. [ 790.298609] CPU: 0 PID: 9998 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 790.302653] block nbd0: shutting down sockets [ 790.306820] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 790.306825] Call Trace: [ 790.306845] dump_stack+0x1fc/0x2ef [ 790.306864] should_fail.cold+0xa/0xf [ 790.306879] ? setup_fault_attr+0x200/0x200 [ 790.306895] ? lock_acquire+0x170/0x3c0 [ 790.312150] block nbd3: shutting down sockets [ 790.320727] __should_failslab+0x115/0x180 [ 790.320745] should_failslab+0x5/0x10 [ 790.320759] __kmalloc_track_caller+0x2a6/0x3c0 [ 790.320773] ? kstrdup_const+0x53/0x80 [ 790.320787] kstrdup+0x36/0x70 [ 790.320802] kstrdup_const+0x53/0x80 [ 790.324847] block nbd5: shutting down sockets [ 790.326986] __kernfs_new_node+0x9b/0x680 [ 790.327000] ? kfree+0xcc/0x210 [ 790.327016] ? kobject_add+0x10d/0x1c0 [ 790.327028] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 790.327046] ? nbd_start_device+0x1f2/0xd60 [ 790.352749] FAULT_INJECTION: forcing a failure. [ 790.352749] name failslab, interval 1, probability 0, space 0, times 0 [ 790.356229] ? nbd_ioctl+0x62c/0xbe0 [ 790.356245] ? blkdev_ioctl+0x5cb/0x1a80 [ 790.410624] ? do_vfs_ioctl+0xcdb/0x12e0 [ 790.414682] ? __x64_sys_ioctl+0x6f/0xb0 [ 790.418730] ? do_syscall_64+0xf9/0x620 [ 790.422698] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 790.428056] ? debug_check_no_obj_freed+0x201/0x490 [ 790.433075] kernfs_create_dir_ns+0x9e/0x230 [ 790.437487] sysfs_create_dir_ns+0x127/0x280 [ 790.441973] ? sysfs_create_mount_point+0xb0/0xb0 [ 790.446808] ? mark_held_locks+0xa6/0xf0 [ 790.450859] ? kfree+0x110/0x210 [ 790.454217] ? kfree_const+0x51/0x60 [ 790.457927] kobject_add_internal+0x2a5/0x9c0 [ 790.462430] kobject_add+0x150/0x1c0 [ 790.466141] ? kset_create_and_add+0x1a0/0x1a0 [ 790.470714] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 790.475383] ? lock_downgrade+0x720/0x720 [ 790.479524] ? kernfs_put.part.0+0x225/0x590 [ 790.483929] blk_mq_register_hctx+0x23c/0x2c0 [ 790.488418] blk_mq_sysfs_register+0x143/0x1c0 [ 790.492992] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 790.498000] ? workqueue_sysfs_register+0x391/0x3e0 [ 790.503013] ? blk_mq_init_queue+0xa0/0xa0 [ 790.507248] ? apparmor_sb_mount+0x970/0x970 [ 790.511655] nbd_start_device+0x1f2/0xd60 [ 790.515794] ? security_capable+0x8f/0xc0 [ 790.519941] nbd_ioctl+0x62c/0xbe0 [ 790.523476] ? _copy_from_user+0xd2/0x130 [ 790.527617] ? nbd_disconnect_and_put+0x190/0x190 [ 790.532462] ? __lock_acquire+0x6de/0x3ff0 [ 790.536688] ? nbd_disconnect_and_put+0x190/0x190 [ 790.541522] blkdev_ioctl+0x5cb/0x1a80 [ 790.545405] ? blkpg_ioctl+0x9d0/0x9d0 [ 790.549282] ? get_pid_task+0xf4/0x190 [ 790.553161] ? mark_held_locks+0xf0/0xf0 [ 790.557213] ? proc_fail_nth_write+0x95/0x1d0 [ 790.561699] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 790.566623] ? __fdget_pos+0x26f/0x310 [ 790.570513] block_ioctl+0xe9/0x130 [ 790.574129] ? blkdev_fallocate+0x3f0/0x3f0 [ 790.578454] do_vfs_ioctl+0xcdb/0x12e0 [ 790.582336] ? lock_downgrade+0x720/0x720 [ 790.586475] ? check_preemption_disabled+0x41/0x280 [ 790.591481] ? ioctl_preallocate+0x200/0x200 [ 790.595886] ? __fget+0x356/0x510 [ 790.599333] ? do_dup2+0x450/0x450 [ 790.602863] ? vfs_write+0x393/0x540 [ 790.606572] ? fput+0x2b/0x190 [ 790.609758] ksys_ioctl+0x9b/0xc0 [ 790.613204] __x64_sys_ioctl+0x6f/0xb0 [ 790.617084] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 790.621660] do_syscall_64+0xf9/0x620 [ 790.625455] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 790.630636] RIP: 0033:0x7f03750e1089 [ 790.634339] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 790.653226] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 790.660923] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 executing program executing program executing program executing program [ 790.668182] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 790.675439] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 790.682697] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 790.689952] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 790.697232] CPU: 1 PID: 10015 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 790.705204] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 790.705652] kobject_add_internal failed for cpu1 (error: -12 parent: 0) [ 790.714543] Call Trace: [ 790.714563] dump_stack+0x1fc/0x2ef [ 790.714581] should_fail.cold+0xa/0xf [ 790.714598] ? setup_fault_attr+0x200/0x200 [ 790.714611] ? lock_acquire+0x170/0x3c0 [ 790.714629] __should_failslab+0x115/0x180 [ 790.714645] should_failslab+0x5/0x10 [ 790.747618] kmem_cache_alloc_trace+0x284/0x380 [ 790.752294] ? wait_for_completion_io+0x10/0x10 [ 790.756967] ? kobj_ns_initial+0x90/0x90 [ 790.761038] call_usermodehelper_setup+0x84/0x300 [ 790.765901] kobject_uevent_env+0xe83/0x1480 [ 790.770320] ? nbd_size_update+0x28a/0x660 [ 790.774559] ? queue_work_on+0x11a/0x1f0 [ 790.778625] nbd_start_device+0x811/0xd60 [ 790.782783] nbd_ioctl+0x62c/0xbe0 [ 790.786329] ? _copy_from_user+0xd2/0x130 [ 790.790480] ? nbd_disconnect_and_put+0x190/0x190 [ 790.795315] ? __lock_acquire+0x6de/0x3ff0 [ 790.799531] ? nbd_disconnect_and_put+0x190/0x190 [ 790.804361] blkdev_ioctl+0x5cb/0x1a80 [ 790.808232] ? blkpg_ioctl+0x9d0/0x9d0 [ 790.812100] ? get_pid_task+0xf4/0x190 [ 790.814369] block nbd1: shutting down sockets [ 790.815981] ? mark_held_locks+0xf0/0xf0 [ 790.815995] ? proc_fail_nth_write+0x95/0x1d0 [ 790.816009] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 790.834098] ? __fdget_pos+0x26f/0x310 [ 790.837996] block_ioctl+0xe9/0x130 [ 790.841611] ? blkdev_fallocate+0x3f0/0x3f0 [ 790.845919] do_vfs_ioctl+0xcdb/0x12e0 [ 790.849803] ? lock_downgrade+0x720/0x720 [ 790.853980] ? check_preemption_disabled+0x41/0x280 [ 790.858984] ? ioctl_preallocate+0x200/0x200 [ 790.863423] ? __fget+0x356/0x510 [ 790.866872] ? do_dup2+0x450/0x450 [ 790.870405] ? vfs_write+0x393/0x540 [ 790.874110] ? fput+0x2b/0x190 [ 790.877300] ksys_ioctl+0x9b/0xc0 [ 790.880742] __x64_sys_ioctl+0x6f/0xb0 [ 790.884623] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 790.889195] do_syscall_64+0xf9/0x620 [ 790.892983] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 790.898157] RIP: 0033:0x7f03750e1089 [ 790.901853] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 executing program executing program [ 790.920743] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 790.928440] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 790.935693] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 790.942949] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 790.950200] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 790.957457] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 790.966297] block nbd2: shutting down sockets executing program [ 791.001880] block nbd4: Device being setup by another task [ 791.007686] block nbd4: Could not allocate knbd recv work queue. [ 791.015800] block nbd0: Device being setup by another task [ 791.015839] block nbd4: shutting down sockets [ 791.026589] block nbd0: Could not allocate knbd recv work queue. [ 791.033286] block nbd5: Device being setup by another task [ 791.038952] block nbd3: Device being setup by another task [ 791.043136] block nbd0: shutting down sockets executing program executing program [ 791.047702] block nbd3: Could not allocate knbd recv work queue. [ 791.057206] block nbd3: shutting down sockets [ 791.082524] FAULT_INJECTION: forcing a failure. [ 791.082524] name failslab, interval 1, probability 0, space 0, times 0 [ 791.086106] FAULT_INJECTION: forcing a failure. [ 791.086106] name failslab, interval 1, probability 0, space 0, times 0 [ 791.094049] CPU: 0 PID: 10042 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 791.112927] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 791.122275] Call Trace: [ 791.124865] dump_stack+0x1fc/0x2ef [ 791.128494] should_fail.cold+0xa/0xf [ 791.132295] ? setup_fault_attr+0x200/0x200 [ 791.136611] ? lock_acquire+0x170/0x3c0 [ 791.140584] __should_failslab+0x115/0x180 [ 791.144823] should_failslab+0x5/0x10 [ 791.148617] __kmalloc_track_caller+0x2a6/0x3c0 [ 791.153278] ? kstrdup_const+0x53/0x80 [ 791.157171] kstrdup+0x36/0x70 [ 791.160362] kstrdup_const+0x53/0x80 [ 791.164072] __kernfs_new_node+0x9b/0x680 [ 791.168218] ? kfree+0xcc/0x210 [ 791.171497] ? kobject_add+0x10d/0x1c0 [ 791.175376] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 791.180124] ? nbd_start_device+0x1f2/0xd60 [ 791.184436] ? nbd_ioctl+0x62c/0xbe0 [ 791.188142] ? blkdev_ioctl+0x5cb/0x1a80 [ 791.192285] ? do_vfs_ioctl+0xcdb/0x12e0 [ 791.196334] ? __x64_sys_ioctl+0x6f/0xb0 [ 791.200385] ? do_syscall_64+0xf9/0x620 [ 791.204351] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 791.209707] ? debug_check_no_obj_freed+0x201/0x490 [ 791.214722] kernfs_create_dir_ns+0x9e/0x230 [ 791.219130] sysfs_create_dir_ns+0x127/0x280 [ 791.223540] ? sysfs_create_mount_point+0xb0/0xb0 [ 791.228381] ? mark_held_locks+0xa6/0xf0 [ 791.232432] ? kfree+0x110/0x210 [ 791.235794] ? kfree_const+0x51/0x60 [ 791.239507] kobject_add_internal+0x2a5/0x9c0 [ 791.244031] kobject_add+0x150/0x1c0 [ 791.247741] ? kset_create_and_add+0x1a0/0x1a0 [ 791.252312] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 791.256974] ? lock_downgrade+0x720/0x720 [ 791.261114] ? kernfs_put.part.0+0x225/0x590 [ 791.265523] blk_mq_register_hctx+0x23c/0x2c0 [ 791.270011] blk_mq_sysfs_register+0x143/0x1c0 [ 791.274590] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 791.279604] ? workqueue_sysfs_register+0x391/0x3e0 [ 791.284615] ? blk_mq_init_queue+0xa0/0xa0 [ 791.288848] nbd_start_device+0x1f2/0xd60 [ 791.292987] ? security_capable+0x8f/0xc0 [ 791.297137] nbd_ioctl+0x62c/0xbe0 [ 791.300700] ? _copy_from_user+0xd2/0x130 [ 791.304853] ? nbd_disconnect_and_put+0x190/0x190 [ 791.309698] ? __lock_acquire+0x6de/0x3ff0 [ 791.313927] ? nbd_disconnect_and_put+0x190/0x190 [ 791.318767] blkdev_ioctl+0x5cb/0x1a80 [ 791.322665] ? blkpg_ioctl+0x9d0/0x9d0 [ 791.326552] ? get_pid_task+0xf4/0x190 [ 791.330438] ? mark_held_locks+0xf0/0xf0 [ 791.334494] ? proc_fail_nth_write+0x95/0x1d0 [ 791.338989] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 791.343909] ? __fdget_pos+0x26f/0x310 [ 791.347794] block_ioctl+0xe9/0x130 [ 791.351414] ? blkdev_fallocate+0x3f0/0x3f0 [ 791.355731] do_vfs_ioctl+0xcdb/0x12e0 [ 791.359616] ? lock_downgrade+0x720/0x720 [ 791.363756] ? check_preemption_disabled+0x41/0x280 [ 791.368764] ? ioctl_preallocate+0x200/0x200 [ 791.373172] ? __fget+0x356/0x510 [ 791.376619] ? do_dup2+0x450/0x450 [ 791.380151] ? vfs_write+0x393/0x540 [ 791.383857] ? fput+0x2b/0x190 [ 791.387049] ksys_ioctl+0x9b/0xc0 [ 791.390495] __x64_sys_ioctl+0x6f/0xb0 [ 791.394374] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 791.398947] do_syscall_64+0xf9/0x620 [ 791.402747] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 791.407927] RIP: 0033:0x7f03750e1089 [ 791.411644] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 791.430533] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 791.438227] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 791.445491] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 791.452751] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 791.460012] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 791.467270] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 791.474549] CPU: 1 PID: 10057 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 791.476858] kobject_add_internal failed for cpu1 (error: -12 parent: 0) [ 791.482519] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 791.482524] Call Trace: [ 791.482545] dump_stack+0x1fc/0x2ef [ 791.482561] should_fail.cold+0xa/0xf [ 791.482578] ? setup_fault_attr+0x200/0x200 [ 791.482594] ? lock_acquire+0x170/0x3c0 [ 791.516915] __should_failslab+0x115/0x180 [ 791.521158] should_failslab+0x5/0x10 [ 791.524967] kmem_cache_alloc+0x277/0x370 [ 791.529112] skb_clone+0x151/0x3d0 [ 791.532639] netlink_broadcast_filtered+0x8e5/0xbc0 [ 791.537642] netlink_broadcast+0x35/0x40 [ 791.541694] kobject_uevent_env+0xa56/0x1480 [ 791.546091] ? nbd_size_update+0x28a/0x660 [ 791.550309] ? queue_work_on+0x11a/0x1f0 [ 791.554358] nbd_start_device+0x811/0xd60 [ 791.558499] nbd_ioctl+0x62c/0xbe0 [ 791.562022] ? _copy_from_user+0xd2/0x130 [ 791.566149] ? nbd_disconnect_and_put+0x190/0x190 [ 791.570976] ? __lock_acquire+0x6de/0x3ff0 [ 791.575195] ? nbd_disconnect_and_put+0x190/0x190 [ 791.580020] blkdev_ioctl+0x5cb/0x1a80 [ 791.583897] ? blkpg_ioctl+0x9d0/0x9d0 [ 791.587780] ? get_pid_task+0xf4/0x190 [ 791.591661] ? mark_held_locks+0xf0/0xf0 [ 791.595747] ? proc_fail_nth_write+0x95/0x1d0 [ 791.600250] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 791.605160] ? __fdget_pos+0x26f/0x310 [ 791.609034] block_ioctl+0xe9/0x130 [ 791.612642] ? blkdev_fallocate+0x3f0/0x3f0 [ 791.616951] do_vfs_ioctl+0xcdb/0x12e0 [ 791.620821] ? lock_downgrade+0x720/0x720 [ 791.624951] ? check_preemption_disabled+0x41/0x280 [ 791.629951] ? ioctl_preallocate+0x200/0x200 [ 791.634342] ? __fget+0x356/0x510 [ 791.637789] ? do_dup2+0x450/0x450 [ 791.641317] ? vfs_write+0x393/0x540 [ 791.645013] ? fput+0x2b/0x190 [ 791.648196] ksys_ioctl+0x9b/0xc0 [ 791.651635] __x64_sys_ioctl+0x6f/0xb0 [ 791.655507] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 791.660069] do_syscall_64+0xf9/0x620 [ 791.663866] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 791.669046] RIP: 0033:0x7f03750e1089 [ 791.672749] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 791.691639] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 791.699331] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 791.706588] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 791.713839] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 791.721097] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 791.728360] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 791.736106] block nbd2: shutting down sockets [ 791.737232] block nbd5: shutting down sockets [ 791.751386] FAULT_INJECTION: forcing a failure. [ 791.751386] name failslab, interval 1, probability 0, space 0, times 0 [ 791.753419] block nbd4: Could not allocate knbd recv work queue. [ 791.769553] CPU: 1 PID: 10045 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 791.770496] block nbd3: Device being setup by another task [ 791.777520] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 791.777526] Call Trace: [ 791.777545] dump_stack+0x1fc/0x2ef [ 791.777565] should_fail.cold+0xa/0xf executing program executing program executing program [ 791.795708] block nbd3: shutting down sockets [ 791.798703] ? setup_fault_attr+0x200/0x200 [ 791.798719] ? lock_acquire+0x170/0x3c0 [ 791.798737] __should_failslab+0x115/0x180 [ 791.803868] block nbd4: shutting down sockets [ 791.807003] should_failslab+0x5/0x10 [ 791.807018] kmem_cache_alloc+0x277/0x370 [ 791.807034] __d_alloc+0x2b/0xa10 [ 791.835360] ? __bpf_address_lookup+0x330/0x330 [ 791.840036] ? check_preemption_disabled+0x41/0x280 [ 791.845061] d_alloc+0x4a/0x230 [ 791.848351] d_alloc_parallel+0xeb/0x19e0 [ 791.852503] ? mark_held_locks+0xf0/0xf0 [ 791.856553] ? __d_lookup_rcu+0x6b0/0x6b0 [ 791.860688] ? mark_held_locks+0xf0/0xf0 [ 791.864734] ? __lockdep_init_map+0x100/0x5a0 [ 791.869216] ? __lockdep_init_map+0x100/0x5a0 [ 791.873700] __lookup_slow+0x18d/0x4a0 [ 791.877577] ? check_preemption_disabled+0x41/0x280 [ 791.882581] ? follow_dotdot_rcu+0x1040/0x1040 [ 791.887148] ? __d_lookup+0x411/0x710 [ 791.890935] ? d_lookup+0x18e/0x250 [ 791.894551] lookup_one_len+0x163/0x190 [ 791.898507] ? try_lookup_one_len+0x180/0x180 [ 791.902988] start_creating+0xc9/0x220 [ 791.906863] __debugfs_create_file+0x5e/0x480 [ 791.911369] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 791.916540] ? kvm_clock_get_cycles+0x14/0x30 [ 791.921030] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 791.925862] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 791.930774] ? init_srcu_struct_fields+0xca6/0x1190 [ 791.935776] ? srcu_reschedule+0x120/0x120 [ 791.940002] ? __raw_spin_lock_init+0x28/0x100 [ 791.944575] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 791.949320] ? nbd_clear_que+0x160/0x160 [ 791.953370] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 791.958368] ? workqueue_sysfs_register+0x391/0x3e0 [ 791.963371] ? blk_mq_init_queue+0xa0/0xa0 [ 791.967594] ? apparmor_sb_mount+0x970/0x970 [ 791.971996] nbd_start_device+0x1f2/0xd60 [ 791.976134] ? security_capable+0x8f/0xc0 [ 791.980264] nbd_ioctl+0x62c/0xbe0 [ 791.983787] ? _copy_from_user+0xd2/0x130 [ 791.987921] ? nbd_disconnect_and_put+0x190/0x190 [ 791.992754] ? __lock_acquire+0x6de/0x3ff0 [ 791.996979] ? nbd_disconnect_and_put+0x190/0x190 [ 792.001807] blkdev_ioctl+0x5cb/0x1a80 [ 792.005679] ? blkpg_ioctl+0x9d0/0x9d0 [ 792.009553] ? get_pid_task+0xf4/0x190 [ 792.013440] ? mark_held_locks+0xf0/0xf0 [ 792.017487] ? proc_fail_nth_write+0x95/0x1d0 [ 792.021966] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 792.026885] ? __fdget_pos+0x26f/0x310 [ 792.030780] block_ioctl+0xe9/0x130 [ 792.034392] ? blkdev_fallocate+0x3f0/0x3f0 [ 792.038699] do_vfs_ioctl+0xcdb/0x12e0 [ 792.042573] ? lock_downgrade+0x720/0x720 [ 792.046704] ? check_preemption_disabled+0x41/0x280 [ 792.051704] ? ioctl_preallocate+0x200/0x200 [ 792.056096] ? __fget+0x356/0x510 [ 792.059531] ? do_dup2+0x450/0x450 [ 792.063060] ? vfs_write+0x393/0x540 [ 792.066767] ? fput+0x2b/0x190 [ 792.070005] ksys_ioctl+0x9b/0xc0 [ 792.073450] __x64_sys_ioctl+0x6f/0xb0 [ 792.077327] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 792.081895] do_syscall_64+0xf9/0x620 [ 792.085695] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 792.090881] RIP: 0033:0x7f03750e1089 [ 792.094576] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 792.113461] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 792.121153] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 792.128407] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 792.135677] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 792.142935] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc executing program executing program executing program [ 792.150213] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 792.159064] block nbd0: Could not allocate knbd recv work queue. [ 792.170304] block nbd0: shutting down sockets [ 792.178054] block nbd1: shutting down sockets [ 792.240473] block nbd3: Device being setup by another task [ 792.246203] block nbd2: Device being setup by another task [ 792.250507] block nbd5: Device being setup by another task [ 792.252296] block nbd3: Could not allocate knbd recv work queue. [ 792.258331] block nbd5: Could not allocate knbd recv work queue. [ 792.263841] block nbd2: Could not allocate knbd recv work queue. [ 792.271502] block nbd5: shutting down sockets [ 792.286432] FAULT_INJECTION: forcing a failure. [ 792.286432] name failslab, interval 1, probability 0, space 0, times 0 [ 792.288168] block nbd3: shutting down sockets [ 792.297963] FAULT_INJECTION: forcing a failure. [ 792.297963] name failslab, interval 1, probability 0, space 0, times 0 [ 792.304250] block nbd2: shutting down sockets [ 792.313649] CPU: 1 PID: 10089 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 792.326124] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 792.335483] Call Trace: executing program executing program [ 792.338079] dump_stack+0x1fc/0x2ef [ 792.341718] should_fail.cold+0xa/0xf [ 792.345535] ? setup_fault_attr+0x200/0x200 [ 792.349869] ? lock_acquire+0x170/0x3c0 [ 792.353844] __should_failslab+0x115/0x180 [ 792.358078] should_failslab+0x5/0x10 [ 792.361879] kmem_cache_alloc+0x277/0x370 [ 792.366028] skb_clone+0x151/0x3d0 [ 792.369569] netlink_broadcast_filtered+0x8e5/0xbc0 [ 792.374591] netlink_broadcast+0x35/0x40 [ 792.378655] kobject_uevent_env+0xa56/0x1480 [ 792.383060] ? nbd_size_update+0x28a/0x660 [ 792.387285] ? queue_work_on+0x11a/0x1f0 [ 792.391342] nbd_start_device+0x811/0xd60 [ 792.395487] nbd_ioctl+0x62c/0xbe0 [ 792.399031] ? _copy_from_user+0xd2/0x130 [ 792.403186] ? nbd_disconnect_and_put+0x190/0x190 [ 792.408037] ? __lock_acquire+0x6de/0x3ff0 [ 792.412271] ? nbd_disconnect_and_put+0x190/0x190 [ 792.417113] blkdev_ioctl+0x5cb/0x1a80 [ 792.421004] ? blkpg_ioctl+0x9d0/0x9d0 [ 792.424882] ? get_pid_task+0xf4/0x190 [ 792.428761] ? mark_held_locks+0xf0/0xf0 [ 792.432810] ? proc_fail_nth_write+0x95/0x1d0 executing program [ 792.437294] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 792.442218] ? __fdget_pos+0x26f/0x310 [ 792.446106] block_ioctl+0xe9/0x130 [ 792.449731] ? blkdev_fallocate+0x3f0/0x3f0 [ 792.454053] do_vfs_ioctl+0xcdb/0x12e0 [ 792.457933] ? lock_downgrade+0x720/0x720 [ 792.462071] ? check_preemption_disabled+0x41/0x280 [ 792.467077] ? ioctl_preallocate+0x200/0x200 [ 792.471478] ? __fget+0x356/0x510 [ 792.474924] ? do_dup2+0x450/0x450 [ 792.478469] ? vfs_write+0x393/0x540 [ 792.482180] ? fput+0x2b/0x190 [ 792.485380] ksys_ioctl+0x9b/0xc0 [ 792.488833] __x64_sys_ioctl+0x6f/0xb0 [ 792.492717] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 792.497302] do_syscall_64+0xf9/0x620 [ 792.501100] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 792.506280] RIP: 0033:0x7f03750e1089 [ 792.509982] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 792.528877] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 792.536752] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 792.544021] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 792.551284] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 792.558542] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 792.565806] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 792.574247] FAULT_INJECTION: forcing a failure. [ 792.574247] name failslab, interval 1, probability 0, space 0, times 0 [ 792.584002] CPU: 0 PID: 10094 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 792.593396] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 792.602739] Call Trace: [ 792.605323] dump_stack+0x1fc/0x2ef [ 792.608947] should_fail.cold+0xa/0xf [ 792.612740] ? setup_fault_attr+0x200/0x200 [ 792.617051] ? lock_acquire+0x170/0x3c0 [ 792.621020] __should_failslab+0x115/0x180 [ 792.625248] should_failslab+0x5/0x10 [ 792.629041] kmem_cache_alloc_trace+0x284/0x380 [ 792.633702] ? wait_for_completion_io+0x10/0x10 [ 792.638360] ? kobj_ns_initial+0x90/0x90 [ 792.642413] call_usermodehelper_setup+0x84/0x300 [ 792.647250] kobject_uevent_env+0xe83/0x1480 [ 792.651656] ? nbd_size_update+0x28a/0x660 [ 792.655896] ? queue_work_on+0x11a/0x1f0 [ 792.659955] nbd_start_device+0x811/0xd60 [ 792.664099] nbd_ioctl+0x62c/0xbe0 [ 792.667637] ? _copy_from_user+0xd2/0x130 [ 792.671784] ? nbd_disconnect_and_put+0x190/0x190 [ 792.676627] ? __lock_acquire+0x6de/0x3ff0 [ 792.680857] ? nbd_disconnect_and_put+0x190/0x190 [ 792.685694] blkdev_ioctl+0x5cb/0x1a80 [ 792.689576] ? blkpg_ioctl+0x9d0/0x9d0 [ 792.693462] ? get_pid_task+0xf4/0x190 [ 792.696372] block nbd0: shutting down sockets [ 792.697341] ? mark_held_locks+0xf0/0xf0 [ 792.697354] ? proc_fail_nth_write+0x95/0x1d0 [ 792.697369] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 792.715269] ? __fdget_pos+0x26f/0x310 [ 792.719152] block_ioctl+0xe9/0x130 [ 792.722767] ? blkdev_fallocate+0x3f0/0x3f0 [ 792.727079] do_vfs_ioctl+0xcdb/0x12e0 [ 792.730958] ? lock_downgrade+0x720/0x720 [ 792.735097] ? check_preemption_disabled+0x41/0x280 [ 792.740103] ? ioctl_preallocate+0x200/0x200 [ 792.744504] ? __fget+0x356/0x510 [ 792.747949] ? do_dup2+0x450/0x450 [ 792.751477] ? vfs_write+0x393/0x540 [ 792.755181] ? fput+0x2b/0x190 [ 792.758366] ksys_ioctl+0x9b/0xc0 [ 792.761813] __x64_sys_ioctl+0x6f/0xb0 [ 792.765692] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 792.770439] do_syscall_64+0xf9/0x620 [ 792.774237] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 792.779414] RIP: 0033:0x7f03750e1089 [ 792.783118] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 792.802007] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 792.809703] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 792.816960] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 792.824220] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 792.831479] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 792.838736] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 792.846012] CPU: 1 PID: 10084 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 792.853982] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 792.863333] Call Trace: [ 792.865930] dump_stack+0x1fc/0x2ef [ 792.869569] should_fail.cold+0xa/0xf [ 792.873374] ? setup_fault_attr+0x200/0x200 [ 792.877699] ? lock_acquire+0x170/0x3c0 [ 792.881685] __should_failslab+0x115/0x180 [ 792.885924] should_failslab+0x5/0x10 executing program [ 792.889726] kmem_cache_alloc_trace+0x284/0x380 [ 792.894399] ? wait_for_completion_io+0x10/0x10 [ 792.897875] block nbd1: shutting down sockets [ 792.899068] ? kobj_ns_initial+0x90/0x90 [ 792.899086] call_usermodehelper_setup+0x84/0x300 [ 792.899106] kobject_uevent_env+0xe83/0x1480 [ 792.899125] ? nbd_size_update+0x28a/0x660 [ 792.899139] ? queue_work_on+0x11a/0x1f0 [ 792.925154] nbd_start_device+0x811/0xd60 [ 792.929305] nbd_ioctl+0x62c/0xbe0 [ 792.932841] ? _copy_from_user+0xd2/0x130 [ 792.936987] ? nbd_disconnect_and_put+0x190/0x190 [ 792.941827] ? __lock_acquire+0x6de/0x3ff0 [ 792.946059] ? nbd_disconnect_and_put+0x190/0x190 [ 792.950890] blkdev_ioctl+0x5cb/0x1a80 [ 792.954771] ? blkpg_ioctl+0x9d0/0x9d0 [ 792.958648] ? get_pid_task+0xf4/0x190 [ 792.962519] ? mark_held_locks+0xf0/0xf0 [ 792.966563] ? proc_fail_nth_write+0x95/0x1d0 [ 792.971050] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 792.975971] ? __fdget_pos+0x26f/0x310 [ 792.979851] block_ioctl+0xe9/0x130 [ 792.983457] ? blkdev_fallocate+0x3f0/0x3f0 [ 792.987768] do_vfs_ioctl+0xcdb/0x12e0 [ 792.991641] ? lock_downgrade+0x720/0x720 [ 792.995773] ? check_preemption_disabled+0x41/0x280 [ 793.000777] ? ioctl_preallocate+0x200/0x200 [ 793.005176] ? __fget+0x356/0x510 [ 793.008621] ? do_dup2+0x450/0x450 [ 793.012150] ? vfs_write+0x393/0x540 [ 793.015850] ? fput+0x2b/0x190 [ 793.019031] ksys_ioctl+0x9b/0xc0 [ 793.022472] __x64_sys_ioctl+0x6f/0xb0 [ 793.026352] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 793.030933] do_syscall_64+0xf9/0x620 [ 793.034721] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 793.039890] RIP: 0033:0x7f03750e1089 [ 793.043585] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 793.062465] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 793.070160] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 793.077416] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 793.084682] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 executing program executing program [ 793.092049] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 793.099313] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 793.108047] block nbd4: shutting down sockets [ 793.140929] block nbd3: Device being setup by another task [ 793.141308] block nbd5: Device being setup by another task [ 793.146765] block nbd3: Could not allocate knbd recv work queue. [ 793.158590] block nbd2: Device being setup by another task [ 793.159454] block nbd5: Could not allocate knbd recv work queue. [ 793.164899] block nbd2: Could not allocate knbd recv work queue. [ 793.178003] block nbd5: shutting down sockets [ 793.178057] block nbd2: shutting down sockets executing program executing program executing program [ 793.187502] block nbd0: Device being setup by another task [ 793.188407] block nbd3: shutting down sockets [ 793.205644] FAULT_INJECTION: forcing a failure. [ 793.205644] name failslab, interval 1, probability 0, space 0, times 0 [ 793.206577] FAULT_INJECTION: forcing a failure. [ 793.206577] name failslab, interval 1, probability 0, space 0, times 0 [ 793.223903] CPU: 1 PID: 10119 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 793.236292] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 793.245639] Call Trace: [ 793.248233] dump_stack+0x1fc/0x2ef [ 793.251861] should_fail.cold+0xa/0xf [ 793.255660] ? setup_fault_attr+0x200/0x200 [ 793.260078] ? lock_acquire+0x170/0x3c0 [ 793.264058] __should_failslab+0x115/0x180 [ 793.268287] should_failslab+0x5/0x10 [ 793.272081] kmem_cache_alloc_trace+0x284/0x380 [ 793.276744] ? wait_for_completion_io+0x10/0x10 [ 793.281403] ? kobj_ns_initial+0x90/0x90 [ 793.285468] call_usermodehelper_setup+0x84/0x300 [ 793.290319] kobject_uevent_env+0xe83/0x1480 [ 793.294728] ? nbd_size_update+0x28a/0x660 [ 793.298965] ? queue_work_on+0x11a/0x1f0 [ 793.303024] nbd_start_device+0x811/0xd60 [ 793.307175] nbd_ioctl+0x62c/0xbe0 [ 793.310725] ? _copy_from_user+0xd2/0x130 [ 793.314866] ? nbd_disconnect_and_put+0x190/0x190 [ 793.319716] ? __lock_acquire+0x6de/0x3ff0 [ 793.323950] ? nbd_disconnect_and_put+0x190/0x190 [ 793.328789] blkdev_ioctl+0x5cb/0x1a80 [ 793.332669] ? blkpg_ioctl+0x9d0/0x9d0 [ 793.336553] ? get_pid_task+0xf4/0x190 [ 793.340432] ? mark_held_locks+0xf0/0xf0 [ 793.344494] ? proc_fail_nth_write+0x95/0x1d0 [ 793.348992] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 793.353917] ? __fdget_pos+0x26f/0x310 [ 793.357810] block_ioctl+0xe9/0x130 [ 793.361435] ? blkdev_fallocate+0x3f0/0x3f0 [ 793.365751] do_vfs_ioctl+0xcdb/0x12e0 [ 793.369638] ? lock_downgrade+0x720/0x720 [ 793.373780] ? check_preemption_disabled+0x41/0x280 [ 793.378787] ? ioctl_preallocate+0x200/0x200 [ 793.383188] ? __fget+0x356/0x510 [ 793.386635] ? do_dup2+0x450/0x450 [ 793.390165] ? vfs_write+0x393/0x540 [ 793.393872] ? fput+0x2b/0x190 [ 793.397061] ksys_ioctl+0x9b/0xc0 [ 793.400505] __x64_sys_ioctl+0x6f/0xb0 [ 793.404388] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 793.408962] do_syscall_64+0xf9/0x620 [ 793.412757] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 793.417934] RIP: 0033:0x7f03750e1089 [ 793.421637] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 793.440529] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 793.448234] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 793.455491] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 793.462747] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 793.470008] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 793.477266] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 793.484586] CPU: 0 PID: 10121 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 793.485391] block nbd1: shutting down sockets [ 793.492555] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 793.492560] Call Trace: [ 793.492579] dump_stack+0x1fc/0x2ef [ 793.492598] should_fail.cold+0xa/0xf [ 793.492614] ? setup_fault_attr+0x200/0x200 [ 793.492628] ? lock_acquire+0x170/0x3c0 [ 793.492647] __should_failslab+0x115/0x180 [ 793.492664] should_failslab+0x5/0x10 [ 793.492677] kmem_cache_alloc+0x277/0x370 [ 793.492691] skb_clone+0x151/0x3d0 [ 793.492709] netlink_broadcast_filtered+0x8e5/0xbc0 [ 793.492729] netlink_broadcast+0x35/0x40 [ 793.492748] kobject_uevent_env+0xa56/0x1480 [ 793.553843] ? nbd_size_update+0x28a/0x660 [ 793.558061] ? queue_work_on+0x11a/0x1f0 [ 793.562103] nbd_start_device+0x811/0xd60 [ 793.566239] nbd_ioctl+0x62c/0xbe0 [ 793.569767] ? _copy_from_user+0xd2/0x130 [ 793.573898] ? nbd_disconnect_and_put+0x190/0x190 [ 793.578732] ? __lock_acquire+0x6de/0x3ff0 [ 793.582948] ? nbd_disconnect_and_put+0x190/0x190 [ 793.587775] blkdev_ioctl+0x5cb/0x1a80 [ 793.591644] ? blkpg_ioctl+0x9d0/0x9d0 [ 793.595516] ? get_pid_task+0xf4/0x190 [ 793.599386] ? mark_held_locks+0xf0/0xf0 [ 793.603431] ? proc_fail_nth_write+0x95/0x1d0 [ 793.607905] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 793.612826] ? __fdget_pos+0x26f/0x310 [ 793.616705] block_ioctl+0xe9/0x130 [ 793.620328] ? blkdev_fallocate+0x3f0/0x3f0 [ 793.624634] do_vfs_ioctl+0xcdb/0x12e0 [ 793.628503] ? lock_downgrade+0x720/0x720 [ 793.632633] ? check_preemption_disabled+0x41/0x280 [ 793.637630] ? ioctl_preallocate+0x200/0x200 [ 793.642025] ? __fget+0x356/0x510 [ 793.645463] ? do_dup2+0x450/0x450 [ 793.648989] ? vfs_write+0x393/0x540 [ 793.652690] ? fput+0x2b/0x190 [ 793.655864] ksys_ioctl+0x9b/0xc0 [ 793.659300] __x64_sys_ioctl+0x6f/0xb0 [ 793.663179] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 793.667755] do_syscall_64+0xf9/0x620 [ 793.671547] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 793.676719] RIP: 0033:0x7f03750e1089 [ 793.680416] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 793.699299] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 793.706990] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 793.714240] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 793.721497] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 793.728747] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 793.735998] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 executing program executing program [ 793.744214] block nbd4: shutting down sockets [ 793.752985] FAULT_INJECTION: forcing a failure. [ 793.752985] name failslab, interval 1, probability 0, space 0, times 0 [ 793.765614] CPU: 1 PID: 10117 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 793.773589] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 793.782925] Call Trace: [ 793.785498] dump_stack+0x1fc/0x2ef [ 793.789114] should_fail.cold+0xa/0xf [ 793.792903] ? setup_fault_attr+0x200/0x200 [ 793.797208] ? lock_acquire+0x170/0x3c0 [ 793.801171] __should_failslab+0x115/0x180 [ 793.805393] should_failslab+0x5/0x10 [ 793.809174] __kmalloc_track_caller+0x2a6/0x3c0 [ 793.813825] ? kstrdup_const+0x53/0x80 [ 793.817699] kstrdup+0x36/0x70 [ 793.820891] kstrdup_const+0x53/0x80 [ 793.824600] __kernfs_new_node+0x9b/0x680 [ 793.828736] ? kfree+0xcc/0x210 [ 793.832014] ? kobject_add+0x10d/0x1c0 [ 793.835894] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 793.840633] ? nbd_start_device+0x1f2/0xd60 [ 793.844938] ? nbd_ioctl+0x62c/0xbe0 [ 793.848633] ? blkdev_ioctl+0x5cb/0x1a80 [ 793.852677] ? do_vfs_ioctl+0xcdb/0x12e0 [ 793.856717] ? __x64_sys_ioctl+0x6f/0xb0 [ 793.860759] ? do_syscall_64+0xf9/0x620 [ 793.864711] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 793.870057] ? debug_check_no_obj_freed+0x201/0x490 [ 793.875081] kernfs_create_dir_ns+0x9e/0x230 [ 793.879493] sysfs_create_dir_ns+0x127/0x280 [ 793.883888] ? sysfs_create_mount_point+0xb0/0xb0 [ 793.888719] ? mark_held_locks+0xa6/0xf0 [ 793.892763] ? kfree+0x110/0x210 [ 793.896118] ? kfree_const+0x51/0x60 [ 793.899816] kobject_add_internal+0x2a5/0x9c0 [ 793.904297] kobject_add+0x150/0x1c0 [ 793.907992] ? kset_create_and_add+0x1a0/0x1a0 [ 793.912563] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 793.917225] ? lock_downgrade+0x720/0x720 [ 793.921358] ? kernfs_put.part.0+0x225/0x590 [ 793.925764] blk_mq_register_hctx+0x23c/0x2c0 [ 793.930254] blk_mq_sysfs_register+0x143/0x1c0 [ 793.934820] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 793.939822] ? workqueue_sysfs_register+0x391/0x3e0 [ 793.944825] ? blk_mq_init_queue+0xa0/0xa0 [ 793.949050] nbd_start_device+0x1f2/0xd60 [ 793.953188] ? security_capable+0x8f/0xc0 [ 793.957329] nbd_ioctl+0x62c/0xbe0 [ 793.960853] ? _copy_from_user+0xd2/0x130 [ 793.964984] ? nbd_disconnect_and_put+0x190/0x190 [ 793.969824] ? __lock_acquire+0x6de/0x3ff0 [ 793.974051] ? nbd_disconnect_and_put+0x190/0x190 [ 793.978873] blkdev_ioctl+0x5cb/0x1a80 [ 793.982742] ? blkpg_ioctl+0x9d0/0x9d0 [ 793.986610] ? get_pid_task+0xf4/0x190 [ 793.990481] ? mark_held_locks+0xf0/0xf0 [ 793.994520] ? proc_fail_nth_write+0x95/0x1d0 [ 793.998997] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 794.003906] ? __fdget_pos+0x26f/0x310 [ 794.007779] block_ioctl+0xe9/0x130 [ 794.011387] ? blkdev_fallocate+0x3f0/0x3f0 [ 794.015689] do_vfs_ioctl+0xcdb/0x12e0 [ 794.019557] ? lock_downgrade+0x720/0x720 [ 794.023689] ? check_preemption_disabled+0x41/0x280 [ 794.028686] ? ioctl_preallocate+0x200/0x200 [ 794.033084] ? __fget+0x356/0x510 [ 794.036534] ? do_dup2+0x450/0x450 [ 794.040066] ? vfs_write+0x393/0x540 [ 794.043764] ? fput+0x2b/0x190 [ 794.046944] ksys_ioctl+0x9b/0xc0 [ 794.050386] __x64_sys_ioctl+0x6f/0xb0 [ 794.054260] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 794.058834] do_syscall_64+0xf9/0x620 [ 794.062631] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 794.067801] RIP: 0033:0x7f03750e1089 [ 794.071497] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 794.090377] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 794.098065] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 794.105324] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 794.112578] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 794.119828] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 794.127078] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 794.136166] kobject_add_internal failed for cpu1 (error: -12 parent: 0) executing program executing program executing program executing program [ 794.143312] block nbd5: Device being setup by another task [ 794.149020] block nbd2: Device being setup by another task [ 794.155554] block nbd5: Could not allocate knbd recv work queue. [ 794.160339] block nbd3: Device being setup by another task [ 794.164900] block nbd2: shutting down sockets [ 794.167539] block nbd3: Could not allocate knbd recv work queue. [ 794.174230] block nbd5: shutting down sockets [ 794.184292] block nbd0: shutting down sockets [ 794.191049] block nbd3: shutting down sockets executing program executing program [ 794.220402] block nbd4: Device being setup by another task [ 794.220615] block nbd1: Device being setup by another task [ 794.226267] block nbd4: Could not allocate knbd recv work queue. [ 794.232662] block nbd1: Could not allocate knbd recv work queue. [ 794.241022] block nbd4: shutting down sockets [ 794.247142] block nbd1: shutting down sockets [ 794.272002] FAULT_INJECTION: forcing a failure. [ 794.272002] name failslab, interval 1, probability 0, space 0, times 0 [ 794.283671] CPU: 0 PID: 10157 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 794.291634] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 794.300979] Call Trace: [ 794.303552] dump_stack+0x1fc/0x2ef [ 794.307270] should_fail.cold+0xa/0xf [ 794.311092] ? setup_fault_attr+0x200/0x200 [ 794.315397] ? lock_acquire+0x170/0x3c0 [ 794.319358] __should_failslab+0x115/0x180 [ 794.323590] should_failslab+0x5/0x10 [ 794.327380] kmem_cache_alloc+0x277/0x370 [ 794.331536] skb_clone+0x151/0x3d0 [ 794.335061] netlink_broadcast_filtered+0x8e5/0xbc0 [ 794.340075] netlink_broadcast+0x35/0x40 [ 794.344140] kobject_uevent_env+0xa56/0x1480 [ 794.348558] ? nbd_size_update+0x28a/0x660 [ 794.352786] ? queue_work_on+0x11a/0x1f0 [ 794.356856] nbd_start_device+0x811/0xd60 [ 794.360989] nbd_ioctl+0x62c/0xbe0 [ 794.364513] ? _copy_from_user+0xd2/0x130 [ 794.368656] ? nbd_disconnect_and_put+0x190/0x190 [ 794.373490] ? __lock_acquire+0x6de/0x3ff0 [ 794.377711] ? nbd_disconnect_and_put+0x190/0x190 [ 794.382538] blkdev_ioctl+0x5cb/0x1a80 [ 794.386430] ? blkpg_ioctl+0x9d0/0x9d0 [ 794.390311] ? get_pid_task+0xf4/0x190 [ 794.394194] ? mark_held_locks+0xf0/0xf0 [ 794.398240] ? proc_fail_nth_write+0x95/0x1d0 [ 794.402720] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 794.407639] ? __fdget_pos+0x26f/0x310 [ 794.411523] block_ioctl+0xe9/0x130 [ 794.415132] ? blkdev_fallocate+0x3f0/0x3f0 [ 794.419444] do_vfs_ioctl+0xcdb/0x12e0 [ 794.423332] ? lock_downgrade+0x720/0x720 [ 794.427476] ? check_preemption_disabled+0x41/0x280 [ 794.432483] ? ioctl_preallocate+0x200/0x200 [ 794.436872] ? __fget+0x356/0x510 [ 794.440307] ? do_dup2+0x450/0x450 [ 794.443834] ? vfs_write+0x393/0x540 [ 794.447532] ? fput+0x2b/0x190 [ 794.450712] ksys_ioctl+0x9b/0xc0 [ 794.454160] __x64_sys_ioctl+0x6f/0xb0 [ 794.458039] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 794.462608] do_syscall_64+0xf9/0x620 [ 794.466403] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 794.471574] RIP: 0033:0x7f03750e1089 [ 794.475270] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 794.494150] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 794.501843] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 794.509096] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 794.516356] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 794.523616] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 794.530872] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 794.542396] FAULT_INJECTION: forcing a failure. [ 794.542396] name failslab, interval 1, probability 0, space 0, times 0 [ 794.553971] CPU: 1 PID: 10162 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 794.554519] FAULT_INJECTION: forcing a failure. [ 794.554519] name failslab, interval 1, probability 0, space 0, times 0 [ 794.561937] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 794.561942] Call Trace: [ 794.561961] dump_stack+0x1fc/0x2ef [ 794.561978] should_fail.cold+0xa/0xf [ 794.561995] ? setup_fault_attr+0x200/0x200 [ 794.562014] ? lock_acquire+0x170/0x3c0 [ 794.562034] __should_failslab+0x115/0x180 [ 794.562053] should_failslab+0x5/0x10 [ 794.608784] kmem_cache_alloc+0x277/0x370 [ 794.612927] skb_clone+0x151/0x3d0 [ 794.616462] netlink_broadcast_filtered+0x8e5/0xbc0 [ 794.621475] netlink_broadcast+0x35/0x40 [ 794.625538] kobject_uevent_env+0xa56/0x1480 [ 794.629942] ? nbd_size_update+0x28a/0x660 [ 794.634169] ? queue_work_on+0x11a/0x1f0 [ 794.638223] nbd_start_device+0x811/0xd60 [ 794.642373] nbd_ioctl+0x62c/0xbe0 [ 794.645926] ? _copy_from_user+0xd2/0x130 [ 794.650070] ? nbd_disconnect_and_put+0x190/0x190 [ 794.654910] ? __lock_acquire+0x6de/0x3ff0 [ 794.659142] ? nbd_disconnect_and_put+0x190/0x190 [ 794.664006] blkdev_ioctl+0x5cb/0x1a80 [ 794.667900] ? blkpg_ioctl+0x9d0/0x9d0 [ 794.671790] ? get_pid_task+0xf4/0x190 [ 794.675676] ? mark_held_locks+0xf0/0xf0 [ 794.679731] ? proc_fail_nth_write+0x95/0x1d0 [ 794.684223] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 794.689144] ? __fdget_pos+0x26f/0x310 [ 794.693035] block_ioctl+0xe9/0x130 [ 794.696656] ? blkdev_fallocate+0x3f0/0x3f0 [ 794.700971] do_vfs_ioctl+0xcdb/0x12e0 [ 794.704891] ? lock_downgrade+0x720/0x720 [ 794.709031] ? check_preemption_disabled+0x41/0x280 [ 794.714052] ? ioctl_preallocate+0x200/0x200 [ 794.718465] ? __fget+0x356/0x510 [ 794.721919] ? do_dup2+0x450/0x450 [ 794.725455] ? vfs_write+0x393/0x540 [ 794.729163] ? fput+0x2b/0x190 [ 794.730379] block nbd2: shutting down sockets [ 794.732349] ksys_ioctl+0x9b/0xc0 [ 794.740264] __x64_sys_ioctl+0x6f/0xb0 [ 794.744160] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 794.748750] do_syscall_64+0xf9/0x620 [ 794.752564] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 794.757746] RIP: 0033:0x7f03750e1089 [ 794.761464] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 794.780391] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 794.788093] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 794.795353] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 794.802618] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 794.809878] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 794.817137] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 executing program [ 794.824417] CPU: 0 PID: 10160 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 794.825355] block nbd1: Could not allocate knbd recv work queue. [ 794.832383] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 794.832389] Call Trace: [ 794.832407] dump_stack+0x1fc/0x2ef [ 794.832426] should_fail.cold+0xa/0xf [ 794.832444] ? setup_fault_attr+0x200/0x200 [ 794.832458] ? lock_acquire+0x170/0x3c0 [ 794.832477] __should_failslab+0x115/0x180 [ 794.832492] should_failslab+0x5/0x10 executing program [ 794.832507] kmem_cache_alloc+0x277/0x370 [ 794.841093] block nbd1: shutting down sockets [ 794.847986] __d_alloc+0x2b/0xa10 [ 794.848001] ? __bpf_address_lookup+0x330/0x330 [ 794.848018] ? check_preemption_disabled+0x41/0x280 [ 794.848034] d_alloc+0x4a/0x230 [ 794.848055] d_alloc_parallel+0xeb/0x19e0 [ 794.851842] FAULT_INJECTION: forcing a failure. [ 794.851842] name failslab, interval 1, probability 0, space 0, times 0 [ 794.854248] ? mark_held_locks+0xf0/0xf0 [ 794.865894] block nbd3: shutting down sockets [ 794.866288] ? __d_lookup_rcu+0x6b0/0x6b0 [ 794.927170] ? mark_held_locks+0xf0/0xf0 [ 794.931229] ? __lockdep_init_map+0x100/0x5a0 [ 794.935724] ? __lockdep_init_map+0x100/0x5a0 [ 794.940221] __lookup_slow+0x18d/0x4a0 [ 794.944104] ? check_preemption_disabled+0x41/0x280 [ 794.949112] ? follow_dotdot_rcu+0x1040/0x1040 [ 794.953693] ? __d_lookup+0x411/0x710 [ 794.957492] ? d_lookup+0x18e/0x250 [ 794.961169] lookup_one_len+0x163/0x190 [ 794.965144] ? try_lookup_one_len+0x180/0x180 [ 794.969637] start_creating+0xc9/0x220 [ 794.973515] __debugfs_create_file+0x5e/0x480 [ 794.978005] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 794.983186] ? kvm_clock_get_cycles+0x14/0x30 [ 794.987670] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 794.992507] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 794.997428] ? init_srcu_struct_fields+0xca6/0x1190 [ 795.002437] ? srcu_reschedule+0x120/0x120 [ 795.006665] ? __raw_spin_lock_init+0x28/0x100 [ 795.011249] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 795.016019] ? nbd_clear_que+0x160/0x160 [ 795.020081] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 795.025095] ? workqueue_sysfs_register+0x391/0x3e0 [ 795.030117] ? blk_mq_init_queue+0xa0/0xa0 [ 795.034351] ? apparmor_sb_mount+0x970/0x970 [ 795.038752] nbd_start_device+0x1f2/0xd60 [ 795.042889] ? security_capable+0x8f/0xc0 [ 795.047039] nbd_ioctl+0x62c/0xbe0 [ 795.050570] ? _copy_from_user+0xd2/0x130 [ 795.054710] ? nbd_disconnect_and_put+0x190/0x190 [ 795.059545] ? __lock_acquire+0x6de/0x3ff0 [ 795.063767] ? nbd_disconnect_and_put+0x190/0x190 [ 795.068599] blkdev_ioctl+0x5cb/0x1a80 [ 795.072486] ? blkpg_ioctl+0x9d0/0x9d0 [ 795.076388] ? get_pid_task+0xf4/0x190 [ 795.080273] ? mark_held_locks+0xf0/0xf0 [ 795.084325] ? proc_fail_nth_write+0x95/0x1d0 [ 795.088827] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 795.093758] ? __fdget_pos+0x26f/0x310 [ 795.097644] block_ioctl+0xe9/0x130 [ 795.101264] ? blkdev_fallocate+0x3f0/0x3f0 [ 795.105576] do_vfs_ioctl+0xcdb/0x12e0 [ 795.109471] ? lock_downgrade+0x720/0x720 [ 795.113617] ? check_preemption_disabled+0x41/0x280 [ 795.118710] ? ioctl_preallocate+0x200/0x200 [ 795.123121] ? __fget+0x356/0x510 [ 795.126578] ? do_dup2+0x450/0x450 [ 795.130292] ? vfs_write+0x393/0x540 [ 795.134062] ? fput+0x2b/0x190 [ 795.137258] ksys_ioctl+0x9b/0xc0 [ 795.140718] __x64_sys_ioctl+0x6f/0xb0 [ 795.144604] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 795.149179] do_syscall_64+0xf9/0x620 [ 795.152997] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 795.158182] RIP: 0033:0x7f03750e1089 [ 795.161893] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 795.180788] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 795.188485] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 795.195746] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 795.203008] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 795.210265] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 795.217532] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 795.224809] CPU: 1 PID: 10174 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 795.231815] FAULT_INJECTION: forcing a failure. [ 795.231815] name failslab, interval 1, probability 0, space 0, times 0 [ 795.232788] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 795.253379] Call Trace: [ 795.255979] dump_stack+0x1fc/0x2ef [ 795.259611] should_fail.cold+0xa/0xf [ 795.263421] ? setup_fault_attr+0x200/0x200 [ 795.267747] ? lock_acquire+0x170/0x3c0 [ 795.271725] __should_failslab+0x115/0x180 [ 795.275965] should_failslab+0x5/0x10 [ 795.279765] kmem_cache_alloc_trace+0x284/0x380 [ 795.284430] ? wait_for_completion_io+0x10/0x10 [ 795.289090] ? kobj_ns_initial+0x90/0x90 [ 795.293149] call_usermodehelper_setup+0x84/0x300 [ 795.298001] kobject_uevent_env+0xe83/0x1480 [ 795.302417] ? nbd_size_update+0x28a/0x660 [ 795.306649] ? queue_work_on+0x11a/0x1f0 [ 795.310710] nbd_start_device+0x811/0xd60 [ 795.314964] nbd_ioctl+0x62c/0xbe0 [ 795.318502] ? _copy_from_user+0xd2/0x130 [ 795.322643] ? nbd_disconnect_and_put+0x190/0x190 [ 795.327495] ? __lock_acquire+0x6de/0x3ff0 [ 795.331728] ? nbd_disconnect_and_put+0x190/0x190 [ 795.336574] blkdev_ioctl+0x5cb/0x1a80 [ 795.340460] ? blkpg_ioctl+0x9d0/0x9d0 [ 795.344339] ? get_pid_task+0xf4/0x190 [ 795.348218] ? mark_held_locks+0xf0/0xf0 [ 795.352270] ? proc_fail_nth_write+0x95/0x1d0 [ 795.356777] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 795.361712] ? __fdget_pos+0x26f/0x310 [ 795.365602] block_ioctl+0xe9/0x130 [ 795.369219] ? blkdev_fallocate+0x3f0/0x3f0 [ 795.373530] do_vfs_ioctl+0xcdb/0x12e0 [ 795.377411] ? lock_downgrade+0x720/0x720 [ 795.381598] ? check_preemption_disabled+0x41/0x280 [ 795.386612] ? ioctl_preallocate+0x200/0x200 [ 795.391013] ? __fget+0x356/0x510 [ 795.394459] ? do_dup2+0x450/0x450 [ 795.397992] ? vfs_write+0x393/0x540 [ 795.401699] ? fput+0x2b/0x190 [ 795.404888] ksys_ioctl+0x9b/0xc0 [ 795.408336] __x64_sys_ioctl+0x6f/0xb0 [ 795.412215] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 795.416785] do_syscall_64+0xf9/0x620 [ 795.420577] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 795.426100] RIP: 0033:0x7f03750e1089 [ 795.429810] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 795.448694] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 795.456393] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 795.463821] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 executing program [ 795.471078] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 795.478334] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 795.485591] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 795.492865] CPU: 0 PID: 10159 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 795.494785] block nbd4: shutting down sockets [ 795.501012] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 795.501018] Call Trace: [ 795.501037] dump_stack+0x1fc/0x2ef [ 795.501056] should_fail.cold+0xa/0xf executing program [ 795.501073] ? setup_fault_attr+0x200/0x200 [ 795.501088] ? lock_acquire+0x170/0x3c0 [ 795.501105] __should_failslab+0x115/0x180 [ 795.501121] should_failslab+0x5/0x10 [ 795.501132] kmem_cache_alloc+0x277/0x370 [ 795.501148] __d_alloc+0x2b/0xa10 [ 795.521607] block nbd5: shutting down sockets [ 795.524924] ? __bpf_address_lookup+0x330/0x330 [ 795.524942] ? check_preemption_disabled+0x41/0x280 [ 795.524960] d_alloc+0x4a/0x230 [ 795.524975] d_alloc_parallel+0xeb/0x19e0 [ 795.524997] ? mark_held_locks+0xf0/0xf0 executing program [ 795.574653] ? __d_lookup_rcu+0x6b0/0x6b0 [ 795.578810] ? mark_held_locks+0xf0/0xf0 [ 795.582880] ? __lockdep_init_map+0x100/0x5a0 [ 795.587382] ? __lockdep_init_map+0x100/0x5a0 [ 795.592009] __lookup_slow+0x18d/0x4a0 [ 795.595893] ? check_preemption_disabled+0x41/0x280 [ 795.600913] ? follow_dotdot_rcu+0x1040/0x1040 [ 795.605497] ? __d_lookup+0x411/0x710 [ 795.609496] ? d_lookup+0x18e/0x250 [ 795.613108] lookup_one_len+0x163/0x190 [ 795.617062] ? try_lookup_one_len+0x180/0x180 [ 795.621545] start_creating+0xc9/0x220 [ 795.625413] __debugfs_create_file+0x5e/0x480 [ 795.630001] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 795.635181] ? kvm_clock_get_cycles+0x14/0x30 [ 795.639660] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 795.644497] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 795.649407] ? init_srcu_struct_fields+0xca6/0x1190 [ 795.654415] ? srcu_reschedule+0x120/0x120 [ 795.658731] ? __raw_spin_lock_init+0x28/0x100 [ 795.663305] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 795.668235] ? nbd_clear_que+0x160/0x160 [ 795.672288] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 795.677282] ? workqueue_sysfs_register+0x391/0x3e0 [ 795.682280] ? blk_mq_init_queue+0xa0/0xa0 [ 795.686514] ? apparmor_sb_mount+0x970/0x970 [ 795.690929] nbd_start_device+0x1f2/0xd60 [ 795.695066] ? security_capable+0x8f/0xc0 [ 795.699197] nbd_ioctl+0x62c/0xbe0 [ 795.702718] ? _copy_from_user+0xd2/0x130 [ 795.706849] ? nbd_disconnect_and_put+0x190/0x190 [ 795.711688] ? __lock_acquire+0x6de/0x3ff0 [ 795.716029] ? nbd_disconnect_and_put+0x190/0x190 [ 795.720864] blkdev_ioctl+0x5cb/0x1a80 [ 795.724743] ? blkpg_ioctl+0x9d0/0x9d0 [ 795.728613] ? get_pid_task+0xf4/0x190 [ 795.732491] ? mark_held_locks+0xf0/0xf0 [ 795.736543] ? proc_fail_nth_write+0x95/0x1d0 [ 795.741028] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 795.745946] ? __fdget_pos+0x26f/0x310 [ 795.749831] block_ioctl+0xe9/0x130 [ 795.753449] ? blkdev_fallocate+0x3f0/0x3f0 [ 795.757760] do_vfs_ioctl+0xcdb/0x12e0 [ 795.761639] ? lock_downgrade+0x720/0x720 [ 795.765855] ? check_preemption_disabled+0x41/0x280 [ 795.770860] ? ioctl_preallocate+0x200/0x200 [ 795.775273] ? __fget+0x356/0x510 [ 795.778723] ? do_dup2+0x450/0x450 [ 795.782252] ? vfs_write+0x393/0x540 [ 795.785963] ? fput+0x2b/0x190 [ 795.789138] ksys_ioctl+0x9b/0xc0 [ 795.792571] __x64_sys_ioctl+0x6f/0xb0 [ 795.796439] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 795.801012] do_syscall_64+0xf9/0x620 [ 795.804798] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 795.809967] RIP: 0033:0x7f03750e1089 [ 795.813666] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 795.832644] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 795.840692] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 795.847970] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 795.855229] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 795.862485] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 795.869731] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 795.885289] block nbd0: shutting down sockets [ 795.892286] block nbd1: Device being setup by another task [ 795.898111] block nbd1: Could not allocate knbd recv work queue. [ 795.904342] block nbd3: Device being setup by another task [ 795.910148] block nbd3: Could not allocate knbd recv work queue. [ 795.916338] block nbd4: Device being setup by another task [ 795.922007] block nbd5: Device being setup by another task [ 795.927817] block nbd5: Could not allocate knbd recv work queue. executing program executing program executing program executing program executing program executing program [ 795.930348] block nbd2: Device being setup by another task [ 795.937349] block nbd4: Could not allocate knbd recv work queue. [ 795.940037] block nbd2: Could not allocate knbd recv work queue. [ 795.948138] block nbd4: shutting down sockets [ 795.954865] block nbd3: shutting down sockets [ 795.960723] block nbd5: shutting down sockets [ 795.962646] block nbd1: shutting down sockets [ 795.979707] block nbd2: shutting down sockets [ 796.042550] FAULT_INJECTION: forcing a failure. [ 796.042550] name failslab, interval 1, probability 0, space 0, times 0 [ 796.054124] FAULT_INJECTION: forcing a failure. [ 796.054124] name failslab, interval 1, probability 0, space 0, times 0 [ 796.054678] CPU: 0 PID: 10214 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 796.073262] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 796.082607] Call Trace: [ 796.085191] dump_stack+0x1fc/0x2ef [ 796.088810] should_fail.cold+0xa/0xf [ 796.092602] ? setup_fault_attr+0x200/0x200 [ 796.096915] ? lock_acquire+0x170/0x3c0 [ 796.100892] __should_failslab+0x115/0x180 [ 796.105123] should_failslab+0x5/0x10 [ 796.108917] kmem_cache_alloc_trace+0x284/0x380 [ 796.113576] ? wait_for_completion_io+0x10/0x10 [ 796.118241] ? kobj_ns_initial+0x90/0x90 [ 796.122296] call_usermodehelper_setup+0x84/0x300 [ 796.127135] kobject_uevent_env+0xe83/0x1480 [ 796.131719] ? nbd_size_update+0x28a/0x660 [ 796.135944] ? queue_work_on+0x11a/0x1f0 [ 796.140007] nbd_start_device+0x811/0xd60 [ 796.144168] nbd_ioctl+0x62c/0xbe0 [ 796.147707] ? _copy_from_user+0xd2/0x130 [ 796.151858] ? nbd_disconnect_and_put+0x190/0x190 [ 796.156698] ? __lock_acquire+0x6de/0x3ff0 [ 796.160926] ? nbd_disconnect_and_put+0x190/0x190 [ 796.165766] blkdev_ioctl+0x5cb/0x1a80 [ 796.169654] ? blkpg_ioctl+0x9d0/0x9d0 [ 796.173533] ? get_pid_task+0xf4/0x190 [ 796.177413] ? mark_held_locks+0xf0/0xf0 [ 796.181467] ? proc_fail_nth_write+0x95/0x1d0 [ 796.185955] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 796.190874] ? __fdget_pos+0x26f/0x310 [ 796.194758] block_ioctl+0xe9/0x130 [ 796.198374] ? blkdev_fallocate+0x3f0/0x3f0 [ 796.202694] do_vfs_ioctl+0xcdb/0x12e0 [ 796.206574] ? lock_downgrade+0x720/0x720 [ 796.210888] ? check_preemption_disabled+0x41/0x280 [ 796.215898] ? ioctl_preallocate+0x200/0x200 [ 796.220300] ? __fget+0x356/0x510 [ 796.223751] ? do_dup2+0x450/0x450 [ 796.229713] ? vfs_write+0x393/0x540 [ 796.233420] ? fput+0x2b/0x190 [ 796.236612] ksys_ioctl+0x9b/0xc0 [ 796.240065] __x64_sys_ioctl+0x6f/0xb0 [ 796.243942] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 796.248513] do_syscall_64+0xf9/0x620 [ 796.252308] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 796.257488] RIP: 0033:0x7f03750e1089 [ 796.261194] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 796.280086] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 796.287794] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 796.295062] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 796.302330] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 796.309602] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 796.316868] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 796.324148] CPU: 1 PID: 10217 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 796.332125] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 796.341476] Call Trace: [ 796.344070] dump_stack+0x1fc/0x2ef [ 796.347702] should_fail.cold+0xa/0xf [ 796.351511] ? setup_fault_attr+0x200/0x200 [ 796.355828] ? lock_acquire+0x170/0x3c0 [ 796.359788] __should_failslab+0x115/0x180 [ 796.364008] should_failslab+0x5/0x10 [ 796.367791] kmem_cache_alloc+0x277/0x370 [ 796.371922] skb_clone+0x151/0x3d0 [ 796.375449] netlink_broadcast_filtered+0x8e5/0xbc0 [ 796.380467] netlink_broadcast+0x35/0x40 [ 796.384522] kobject_uevent_env+0xa56/0x1480 [ 796.388921] ? nbd_size_update+0x28a/0x660 [ 796.393149] ? queue_work_on+0x11a/0x1f0 [ 796.397196] nbd_start_device+0x811/0xd60 [ 796.401336] nbd_ioctl+0x62c/0xbe0 [ 796.404862] ? _copy_from_user+0xd2/0x130 [ 796.408992] ? nbd_disconnect_and_put+0x190/0x190 [ 796.413820] ? __lock_acquire+0x6de/0x3ff0 [ 796.418042] ? nbd_disconnect_and_put+0x190/0x190 [ 796.422972] blkdev_ioctl+0x5cb/0x1a80 [ 796.426849] ? blkpg_ioctl+0x9d0/0x9d0 [ 796.430718] ? get_pid_task+0xf4/0x190 [ 796.434587] ? mark_held_locks+0xf0/0xf0 [ 796.438628] ? proc_fail_nth_write+0x95/0x1d0 executing program [ 796.441917] block nbd4: shutting down sockets [ 796.443204] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 796.443218] ? __fdget_pos+0x26f/0x310 [ 796.443241] block_ioctl+0xe9/0x130 [ 796.460126] ? blkdev_fallocate+0x3f0/0x3f0 [ 796.464449] do_vfs_ioctl+0xcdb/0x12e0 [ 796.468329] ? lock_downgrade+0x720/0x720 [ 796.472465] ? check_preemption_disabled+0x41/0x280 [ 796.477469] ? ioctl_preallocate+0x200/0x200 [ 796.481868] ? __fget+0x356/0x510 [ 796.485311] ? do_dup2+0x450/0x450 [ 796.488845] ? vfs_write+0x393/0x540 [ 796.492546] ? fput+0x2b/0x190 [ 796.495730] ksys_ioctl+0x9b/0xc0 [ 796.499277] __x64_sys_ioctl+0x6f/0xb0 [ 796.503160] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 796.507730] do_syscall_64+0xf9/0x620 [ 796.511523] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 796.516704] RIP: 0033:0x7f03750e1089 [ 796.520487] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 796.539500] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 796.547206] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 796.554469] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 796.561727] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 796.568986] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 796.576244] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 796.584091] FAULT_INJECTION: forcing a failure. [ 796.584091] name failslab, interval 1, probability 0, space 0, times 0 [ 796.592908] block nbd5: shutting down sockets [ 796.595699] CPU: 1 PID: 10219 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 796.607728] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 796.617066] Call Trace: [ 796.619648] dump_stack+0x1fc/0x2ef [ 796.623264] should_fail.cold+0xa/0xf [ 796.627050] ? setup_fault_attr+0x200/0x200 [ 796.631356] ? lock_acquire+0x170/0x3c0 [ 796.635315] __should_failslab+0x115/0x180 [ 796.639535] should_failslab+0x5/0x10 [ 796.643317] kmem_cache_alloc+0x277/0x370 [ 796.647450] skb_clone+0x151/0x3d0 [ 796.650976] netlink_broadcast_filtered+0x8e5/0xbc0 [ 796.655982] netlink_broadcast+0x35/0x40 [ 796.660026] kobject_uevent_env+0xa56/0x1480 [ 796.664422] ? nbd_size_update+0x28a/0x660 [ 796.668638] ? queue_work_on+0x11a/0x1f0 [ 796.672684] nbd_start_device+0x811/0xd60 [ 796.676820] nbd_ioctl+0x62c/0xbe0 [ 796.680346] ? _copy_from_user+0xd2/0x130 [ 796.684491] ? nbd_disconnect_and_put+0x190/0x190 [ 796.689321] ? __lock_acquire+0x6de/0x3ff0 [ 796.693540] ? nbd_disconnect_and_put+0x190/0x190 [ 796.698365] blkdev_ioctl+0x5cb/0x1a80 [ 796.702263] ? blkpg_ioctl+0x9d0/0x9d0 [ 796.706135] ? get_pid_task+0xf4/0x190 [ 796.710007] ? mark_held_locks+0xf0/0xf0 [ 796.714052] ? proc_fail_nth_write+0x95/0x1d0 [ 796.718528] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 796.723437] ? __fdget_pos+0x26f/0x310 [ 796.727321] block_ioctl+0xe9/0x130 [ 796.730935] ? blkdev_fallocate+0x3f0/0x3f0 [ 796.735241] do_vfs_ioctl+0xcdb/0x12e0 [ 796.739109] ? lock_downgrade+0x720/0x720 [ 796.743243] ? check_preemption_disabled+0x41/0x280 [ 796.748240] ? ioctl_preallocate+0x200/0x200 [ 796.752632] ? __fget+0x356/0x510 [ 796.756066] ? do_dup2+0x450/0x450 [ 796.759585] ? vfs_write+0x393/0x540 [ 796.763281] ? fput+0x2b/0x190 [ 796.766462] ksys_ioctl+0x9b/0xc0 [ 796.769901] __x64_sys_ioctl+0x6f/0xb0 [ 796.773799] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 796.778382] do_syscall_64+0xf9/0x620 [ 796.782171] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 796.787345] RIP: 0033:0x7f03750e1089 [ 796.791040] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 796.809921] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 796.817618] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 796.824960] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 796.832215] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 executing program [ 796.839472] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 796.846720] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 796.855173] FAULT_INJECTION: forcing a failure. [ 796.855173] name failslab, interval 1, probability 0, space 0, times 0 [ 796.866874] block nbd1: shutting down sockets [ 796.873998] CPU: 1 PID: 10218 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 796.881996] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 796.891334] Call Trace: [ 796.893908] dump_stack+0x1fc/0x2ef [ 796.897521] should_fail.cold+0xa/0xf [ 796.901306] ? setup_fault_attr+0x200/0x200 [ 796.905611] ? lock_acquire+0x170/0x3c0 [ 796.909577] __should_failslab+0x115/0x180 [ 796.913795] should_failslab+0x5/0x10 [ 796.917579] kmem_cache_alloc+0x277/0x370 [ 796.921711] skb_clone+0x151/0x3d0 [ 796.925240] netlink_broadcast_filtered+0x8e5/0xbc0 [ 796.930250] netlink_broadcast+0x35/0x40 [ 796.934298] kobject_uevent_env+0xa56/0x1480 [ 796.938690] ? nbd_size_update+0x28a/0x660 [ 796.942915] ? queue_work_on+0x11a/0x1f0 [ 796.946967] nbd_start_device+0x811/0xd60 [ 796.951102] nbd_ioctl+0x62c/0xbe0 [ 796.954624] ? _copy_from_user+0xd2/0x130 [ 796.958751] ? nbd_disconnect_and_put+0x190/0x190 [ 796.963579] ? __lock_acquire+0x6de/0x3ff0 [ 796.967806] ? nbd_disconnect_and_put+0x190/0x190 [ 796.972633] blkdev_ioctl+0x5cb/0x1a80 [ 796.976501] ? blkpg_ioctl+0x9d0/0x9d0 [ 796.980372] ? get_pid_task+0xf4/0x190 [ 796.984240] ? mark_held_locks+0xf0/0xf0 [ 796.988289] ? proc_fail_nth_write+0x95/0x1d0 [ 796.992774] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 796.997695] ? __fdget_pos+0x26f/0x310 [ 797.001568] block_ioctl+0xe9/0x130 [ 797.005176] ? blkdev_fallocate+0x3f0/0x3f0 [ 797.009477] do_vfs_ioctl+0xcdb/0x12e0 [ 797.013346] ? lock_downgrade+0x720/0x720 [ 797.017474] ? check_preemption_disabled+0x41/0x280 [ 797.022472] ? ioctl_preallocate+0x200/0x200 [ 797.026879] ? __fget+0x356/0x510 [ 797.030322] ? do_dup2+0x450/0x450 [ 797.033848] ? vfs_write+0x393/0x540 [ 797.037543] ? fput+0x2b/0x190 [ 797.040719] ksys_ioctl+0x9b/0xc0 [ 797.044155] __x64_sys_ioctl+0x6f/0xb0 [ 797.048024] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 797.052590] do_syscall_64+0xf9/0x620 [ 797.056381] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 797.061553] RIP: 0033:0x7f03750e1089 [ 797.065257] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 797.084151] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 797.091843] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 797.099099] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 797.106353] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 797.113616] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 797.120876] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 797.131078] FAULT_INJECTION: forcing a failure. [ 797.131078] name failslab, interval 1, probability 0, space 0, times 0 [ 797.134466] block nbd3: shutting down sockets executing program executing program [ 797.142987] FAULT_INJECTION: forcing a failure. [ 797.142987] name failslab, interval 1, probability 0, space 0, times 0 [ 797.168447] CPU: 0 PID: 10221 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 797.176436] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 797.185788] Call Trace: [ 797.188381] dump_stack+0x1fc/0x2ef [ 797.192010] should_fail.cold+0xa/0xf [ 797.195813] ? setup_fault_attr+0x200/0x200 [ 797.200131] ? lock_acquire+0x170/0x3c0 [ 797.204101] __should_failslab+0x115/0x180 [ 797.208333] should_failslab+0x5/0x10 [ 797.212126] kmem_cache_alloc_trace+0x284/0x380 [ 797.216782] ? wait_for_completion_io+0x10/0x10 [ 797.221447] ? kobj_ns_initial+0x90/0x90 [ 797.225506] call_usermodehelper_setup+0x84/0x300 [ 797.230348] kobject_uevent_env+0xe83/0x1480 [ 797.234753] ? nbd_size_update+0x28a/0x660 [ 797.238980] ? queue_work_on+0x11a/0x1f0 [ 797.243046] nbd_start_device+0x811/0xd60 [ 797.247199] nbd_ioctl+0x62c/0xbe0 [ 797.250731] ? _copy_from_user+0xd2/0x130 [ 797.254878] ? nbd_disconnect_and_put+0x190/0x190 [ 797.259727] ? __lock_acquire+0x6de/0x3ff0 [ 797.263959] ? nbd_disconnect_and_put+0x190/0x190 [ 797.268803] blkdev_ioctl+0x5cb/0x1a80 [ 797.272684] ? blkpg_ioctl+0x9d0/0x9d0 [ 797.276573] ? get_pid_task+0xf4/0x190 [ 797.280458] ? mark_held_locks+0xf0/0xf0 [ 797.284517] ? proc_fail_nth_write+0x95/0x1d0 [ 797.289004] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 797.293930] ? __fdget_pos+0x26f/0x310 [ 797.297817] block_ioctl+0xe9/0x130 [ 797.301446] ? blkdev_fallocate+0x3f0/0x3f0 [ 797.305764] do_vfs_ioctl+0xcdb/0x12e0 [ 797.309646] ? lock_downgrade+0x720/0x720 [ 797.313783] ? check_preemption_disabled+0x41/0x280 [ 797.318793] ? ioctl_preallocate+0x200/0x200 [ 797.323206] ? __fget+0x356/0x510 [ 797.326673] ? do_dup2+0x450/0x450 [ 797.330203] ? vfs_write+0x393/0x540 [ 797.333916] ? fput+0x2b/0x190 [ 797.337109] ksys_ioctl+0x9b/0xc0 [ 797.340556] __x64_sys_ioctl+0x6f/0xb0 [ 797.344434] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 797.349007] do_syscall_64+0xf9/0x620 [ 797.352806] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 797.357988] RIP: 0033:0x7f03750e1089 [ 797.361697] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 797.380600] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 797.388305] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 797.395563] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 797.402823] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 797.410194] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 797.417460] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 797.424759] CPU: 1 PID: 10227 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 797.425704] block nbd4: Device being setup by another task [ 797.432813] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 executing program [ 797.432823] Call Trace: [ 797.432842] dump_stack+0x1fc/0x2ef [ 797.432860] should_fail.cold+0xa/0xf [ 797.432879] ? setup_fault_attr+0x200/0x200 [ 797.442488] block nbd4: Could not allocate knbd recv work queue. [ 797.447841] ? lock_acquire+0x170/0x3c0 [ 797.447860] __should_failslab+0x115/0x180 [ 797.447877] should_failslab+0x5/0x10 [ 797.456582] block nbd4: shutting down sockets [ 797.457923] kmem_cache_alloc_trace+0x284/0x380 [ 797.457936] ? wait_for_completion_io+0x10/0x10 [ 797.457953] ? kobj_ns_initial+0x90/0x90 [ 797.465531] block nbd2: shutting down sockets [ 797.468391] call_usermodehelper_setup+0x84/0x300 [ 797.468410] kobject_uevent_env+0xe83/0x1480 [ 797.468428] ? nbd_size_update+0x28a/0x660 [ 797.516121] ? queue_work_on+0x11a/0x1f0 [ 797.520177] nbd_start_device+0x811/0xd60 [ 797.524319] nbd_ioctl+0x62c/0xbe0 [ 797.527853] ? _copy_from_user+0xd2/0x130 [ 797.531991] ? nbd_disconnect_and_put+0x190/0x190 [ 797.536828] ? __lock_acquire+0x6de/0x3ff0 [ 797.541044] ? nbd_disconnect_and_put+0x190/0x190 [ 797.545872] blkdev_ioctl+0x5cb/0x1a80 [ 797.549742] ? blkpg_ioctl+0x9d0/0x9d0 [ 797.553612] ? get_pid_task+0xf4/0x190 [ 797.557480] ? mark_held_locks+0xf0/0xf0 [ 797.561522] ? proc_fail_nth_write+0x95/0x1d0 [ 797.565999] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 797.570910] ? __fdget_pos+0x26f/0x310 [ 797.574782] block_ioctl+0xe9/0x130 [ 797.578401] ? blkdev_fallocate+0x3f0/0x3f0 [ 797.582710] do_vfs_ioctl+0xcdb/0x12e0 [ 797.586584] ? lock_downgrade+0x720/0x720 [ 797.590713] ? check_preemption_disabled+0x41/0x280 [ 797.595710] ? ioctl_preallocate+0x200/0x200 [ 797.600112] ? __fget+0x356/0x510 [ 797.603555] ? do_dup2+0x450/0x450 [ 797.607097] ? vfs_write+0x393/0x540 [ 797.610794] ? fput+0x2b/0x190 [ 797.613974] ksys_ioctl+0x9b/0xc0 [ 797.617408] __x64_sys_ioctl+0x6f/0xb0 [ 797.621276] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 797.625835] do_syscall_64+0xf9/0x620 [ 797.629619] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 797.634790] RIP: 0033:0x7f03750e1089 [ 797.638488] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 797.657370] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 797.665060] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 797.672318] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 797.679569] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 797.686927] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc executing program executing program [ 797.694181] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 797.703299] block nbd0: shutting down sockets [ 797.720360] block nbd5: Device being setup by another task [ 797.726130] block nbd5: Could not allocate knbd recv work queue. [ 797.736858] block nbd5: shutting down sockets executing program executing program [ 797.750349] block nbd3: Device being setup by another task [ 797.756266] block nbd4: Device being setup by another task [ 797.761990] block nbd1: Device being setup by another task [ 797.768620] block nbd4: Could not allocate knbd recv work queue. [ 797.779810] block nbd4: shutting down sockets [ 797.791657] FAULT_INJECTION: forcing a failure. [ 797.791657] name failslab, interval 1, probability 0, space 0, times 0 [ 797.792613] FAULT_INJECTION: forcing a failure. [ 797.792613] name failslab, interval 1, probability 0, space 0, times 0 [ 797.803070] CPU: 0 PID: 10261 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 797.822016] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 797.831361] Call Trace: [ 797.833946] dump_stack+0x1fc/0x2ef [ 797.837567] should_fail.cold+0xa/0xf [ 797.841363] ? setup_fault_attr+0x200/0x200 [ 797.845679] ? lock_acquire+0x170/0x3c0 [ 797.849647] __should_failslab+0x115/0x180 [ 797.853889] should_failslab+0x5/0x10 [ 797.857692] kmem_cache_alloc+0x277/0x370 [ 797.861846] skb_clone+0x151/0x3d0 [ 797.865391] netlink_broadcast_filtered+0x8e5/0xbc0 [ 797.870414] netlink_broadcast+0x35/0x40 [ 797.874471] kobject_uevent_env+0xa56/0x1480 [ 797.878873] ? nbd_size_update+0x28a/0x660 [ 797.883099] ? queue_work_on+0x11a/0x1f0 [ 797.887151] nbd_start_device+0x811/0xd60 [ 797.891300] nbd_ioctl+0x62c/0xbe0 [ 797.894832] ? _copy_from_user+0xd2/0x130 [ 797.898968] ? nbd_disconnect_and_put+0x190/0x190 [ 797.903810] ? __lock_acquire+0x6de/0x3ff0 [ 797.908041] ? nbd_disconnect_and_put+0x190/0x190 [ 797.912876] blkdev_ioctl+0x5cb/0x1a80 [ 797.916754] ? blkpg_ioctl+0x9d0/0x9d0 [ 797.920632] ? get_pid_task+0xf4/0x190 [ 797.924512] ? mark_held_locks+0xf0/0xf0 [ 797.928562] ? proc_fail_nth_write+0x95/0x1d0 [ 797.933046] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 797.937962] ? __fdget_pos+0x26f/0x310 [ 797.941948] block_ioctl+0xe9/0x130 [ 797.945562] ? blkdev_fallocate+0x3f0/0x3f0 [ 797.949874] do_vfs_ioctl+0xcdb/0x12e0 [ 797.953754] ? lock_downgrade+0x720/0x720 [ 797.957896] ? check_preemption_disabled+0x41/0x280 [ 797.962904] ? ioctl_preallocate+0x200/0x200 [ 797.967307] ? __fget+0x356/0x510 [ 797.970753] ? do_dup2+0x450/0x450 [ 797.974284] ? vfs_write+0x393/0x540 [ 797.977990] ? fput+0x2b/0x190 [ 797.981176] ksys_ioctl+0x9b/0xc0 [ 797.984628] __x64_sys_ioctl+0x6f/0xb0 [ 797.988503] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 797.993075] do_syscall_64+0xf9/0x620 [ 797.996873] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 798.002055] RIP: 0033:0x7f03750e1089 [ 798.005760] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 798.024653] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 798.032349] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 798.039605] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 798.046860] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 798.054125] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 798.061384] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 798.068661] CPU: 1 PID: 10252 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 798.076645] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 798.086009] Call Trace: [ 798.088618] dump_stack+0x1fc/0x2ef [ 798.092272] should_fail.cold+0xa/0xf [ 798.094581] block nbd2: shutting down sockets [ 798.096084] ? setup_fault_attr+0x200/0x200 [ 798.096100] ? lock_acquire+0x170/0x3c0 [ 798.096125] __should_failslab+0x115/0x180 [ 798.113109] should_failslab+0x5/0x10 [ 798.116918] __kmalloc_track_caller+0x2a6/0x3c0 [ 798.120434] FAULT_INJECTION: forcing a failure. [ 798.120434] name failslab, interval 1, probability 0, space 0, times 0 [ 798.121595] ? kstrdup_const+0x53/0x80 [ 798.121614] kstrdup+0x36/0x70 [ 798.121629] kstrdup_const+0x53/0x80 [ 798.121644] __kernfs_new_node+0x9b/0x680 [ 798.121657] ? kfree+0xcc/0x210 [ 798.121673] ? kobject_add+0x10d/0x1c0 [ 798.121687] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 798.121702] ? nbd_start_device+0x1f2/0xd60 [ 798.121715] ? nbd_ioctl+0x62c/0xbe0 [ 798.121727] ? blkdev_ioctl+0x5cb/0x1a80 [ 798.121747] ? do_vfs_ioctl+0xcdb/0x12e0 [ 798.121759] ? __x64_sys_ioctl+0x6f/0xb0 [ 798.121771] ? do_syscall_64+0xf9/0x620 [ 798.121786] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 798.121801] ? debug_check_no_obj_freed+0x201/0x490 [ 798.121824] kernfs_create_dir_ns+0x9e/0x230 [ 798.121839] sysfs_create_dir_ns+0x127/0x280 [ 798.121857] ? sysfs_create_mount_point+0xb0/0xb0 [ 798.207893] ? mark_held_locks+0xa6/0xf0 [ 798.211950] ? kfree+0x110/0x210 [ 798.215309] ? kfree_const+0x51/0x60 [ 798.219021] kobject_add_internal+0x2a5/0x9c0 [ 798.223513] kobject_add+0x150/0x1c0 [ 798.227224] ? kset_create_and_add+0x1a0/0x1a0 [ 798.231824] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 798.236487] ? lock_downgrade+0x720/0x720 [ 798.240630] ? kernfs_put.part.0+0x225/0x590 [ 798.245036] blk_mq_register_hctx+0x23c/0x2c0 [ 798.249528] blk_mq_sysfs_register+0x143/0x1c0 [ 798.254107] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 798.259115] ? workqueue_sysfs_register+0x391/0x3e0 [ 798.264137] ? blk_mq_init_queue+0xa0/0xa0 [ 798.268390] nbd_start_device+0x1f2/0xd60 [ 798.272538] ? security_capable+0x8f/0xc0 [ 798.276698] nbd_ioctl+0x62c/0xbe0 [ 798.280249] ? _copy_from_user+0xd2/0x130 [ 798.284400] ? nbd_disconnect_and_put+0x190/0x190 [ 798.289248] ? __lock_acquire+0x6de/0x3ff0 [ 798.293482] ? nbd_disconnect_and_put+0x190/0x190 [ 798.298321] blkdev_ioctl+0x5cb/0x1a80 [ 798.302205] ? blkpg_ioctl+0x9d0/0x9d0 [ 798.306092] ? get_pid_task+0xf4/0x190 [ 798.309989] ? mark_held_locks+0xf0/0xf0 [ 798.314052] ? proc_fail_nth_write+0x95/0x1d0 [ 798.318541] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 798.323467] ? __fdget_pos+0x26f/0x310 [ 798.327358] block_ioctl+0xe9/0x130 [ 798.330978] ? blkdev_fallocate+0x3f0/0x3f0 [ 798.335294] do_vfs_ioctl+0xcdb/0x12e0 [ 798.339177] ? lock_downgrade+0x720/0x720 [ 798.343320] ? check_preemption_disabled+0x41/0x280 [ 798.348358] ? ioctl_preallocate+0x200/0x200 [ 798.352777] ? __fget+0x356/0x510 [ 798.356226] ? do_dup2+0x450/0x450 [ 798.359755] ? vfs_write+0x393/0x540 [ 798.363462] ? fput+0x2b/0x190 [ 798.366650] ksys_ioctl+0x9b/0xc0 [ 798.370098] __x64_sys_ioctl+0x6f/0xb0 [ 798.373979] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 798.378557] do_syscall_64+0xf9/0x620 [ 798.382350] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 798.387533] RIP: 0033:0x7f03750e1089 [ 798.391238] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 798.410130] RSP: 002b:00007f03750232e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 798.417824] RAX: ffffffffffffffda RBX: 00007f037515e4f0 RCX: 00007f03750e1089 [ 798.425088] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000006 [ 798.432355] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 798.439622] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4fc executing program [ 798.446905] R13: 00007f03750232f0 R14: 00007f037515e4f8 R15: 0000000000000002 [ 798.456736] kobject_add_internal failed for cpu1 (error: -12 parent: 0) [ 798.462069] FAULT_INJECTION: forcing a failure. [ 798.462069] name failslab, interval 1, probability 0, space 0, times 0 [ 798.468239] block nbd3: shutting down sockets [ 798.480630] block nbd5: Could not allocate knbd recv work queue. [ 798.482590] CPU: 0 PID: 10263 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 798.487977] block nbd5: shutting down sockets [ 798.494733] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 798.494738] Call Trace: [ 798.494755] dump_stack+0x1fc/0x2ef [ 798.494772] should_fail.cold+0xa/0xf [ 798.494788] ? setup_fault_attr+0x200/0x200 [ 798.494803] ? lock_acquire+0x170/0x3c0 [ 798.494821] __should_failslab+0x115/0x180 [ 798.531098] should_failslab+0x5/0x10 [ 798.534895] kmem_cache_alloc_trace+0x284/0x380 [ 798.539558] ? wait_for_completion_io+0x10/0x10 [ 798.544223] ? kobj_ns_initial+0x90/0x90 [ 798.548284] call_usermodehelper_setup+0x84/0x300 [ 798.553128] kobject_uevent_env+0xe83/0x1480 [ 798.557538] ? nbd_size_update+0x28a/0x660 [ 798.561773] ? queue_work_on+0x11a/0x1f0 [ 798.565833] nbd_start_device+0x811/0xd60 [ 798.569988] nbd_ioctl+0x62c/0xbe0 [ 798.573528] ? _copy_from_user+0xd2/0x130 [ 798.577675] ? nbd_disconnect_and_put+0x190/0x190 [ 798.582518] ? __lock_acquire+0x6de/0x3ff0 [ 798.586748] ? nbd_disconnect_and_put+0x190/0x190 [ 798.591583] blkdev_ioctl+0x5cb/0x1a80 [ 798.595460] ? blkpg_ioctl+0x9d0/0x9d0 [ 798.599430] ? get_pid_task+0xf4/0x190 [ 798.603318] ? mark_held_locks+0xf0/0xf0 [ 798.607369] ? proc_fail_nth_write+0x95/0x1d0 [ 798.611860] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 798.616778] ? __fdget_pos+0x26f/0x310 [ 798.620665] block_ioctl+0xe9/0x130 [ 798.624287] ? blkdev_fallocate+0x3f0/0x3f0 [ 798.628603] do_vfs_ioctl+0xcdb/0x12e0 [ 798.632480] ? lock_downgrade+0x720/0x720 [ 798.636618] ? check_preemption_disabled+0x41/0x280 [ 798.641625] ? ioctl_preallocate+0x200/0x200 [ 798.646029] ? __fget+0x356/0x510 [ 798.649476] ? do_dup2+0x450/0x450 [ 798.653010] ? vfs_write+0x393/0x540 [ 798.656721] ? fput+0x2b/0x190 [ 798.659913] ksys_ioctl+0x9b/0xc0 [ 798.663363] __x64_sys_ioctl+0x6f/0xb0 [ 798.667242] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 798.671822] do_syscall_64+0xf9/0x620 [ 798.675623] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 798.680804] RIP: 0033:0x7f03750e1089 [ 798.684510] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 executing program [ 798.703398] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 798.711098] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 798.718356] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 798.725614] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 798.732884] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 798.740145] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 executing program [ 798.747430] CPU: 1 PID: 10259 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 798.752087] block nbd4: Could not allocate knbd recv work queue. [ 798.755406] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 798.763334] block nbd4: shutting down sockets [ 798.770864] Call Trace: [ 798.770886] dump_stack+0x1fc/0x2ef [ 798.770903] should_fail.cold+0xa/0xf [ 798.770919] ? setup_fault_attr+0x200/0x200 [ 798.770933] ? lock_acquire+0x170/0x3c0 [ 798.770950] __should_failslab+0x115/0x180 [ 798.776011] block nbd0: shutting down sockets executing program [ 798.777997] should_failslab+0x5/0x10 [ 798.778012] __kmalloc_track_caller+0x2a6/0x3c0 [ 798.778024] ? kstrdup_const+0x53/0x80 [ 798.778040] kstrdup+0x36/0x70 [ 798.817926] kstrdup_const+0x53/0x80 [ 798.821632] __kernfs_new_node+0x9b/0x680 [ 798.825771] ? kfree+0xcc/0x210 [ 798.829053] ? kobject_add+0x10d/0x1c0 [ 798.832932] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 798.837676] ? nbd_start_device+0x1f2/0xd60 [ 798.841985] ? nbd_ioctl+0x62c/0xbe0 [ 798.845702] ? blkdev_ioctl+0x5cb/0x1a80 [ 798.849754] ? do_vfs_ioctl+0xcdb/0x12e0 [ 798.853797] ? __x64_sys_ioctl+0x6f/0xb0 [ 798.857845] ? do_syscall_64+0xf9/0x620 [ 798.861812] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 798.867160] ? debug_check_no_obj_freed+0x201/0x490 [ 798.872165] kernfs_create_dir_ns+0x9e/0x230 [ 798.876558] sysfs_create_dir_ns+0x127/0x280 [ 798.880948] ? sysfs_create_mount_point+0xb0/0xb0 [ 798.885774] ? mark_held_locks+0xa6/0xf0 [ 798.889823] ? kfree+0x110/0x210 [ 798.893180] ? kfree_const+0x51/0x60 [ 798.896878] kobject_add_internal+0x2a5/0x9c0 [ 798.901361] kobject_add+0x150/0x1c0 [ 798.905057] ? kset_create_and_add+0x1a0/0x1a0 [ 798.909617] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 798.914270] ? lock_downgrade+0x720/0x720 [ 798.918405] ? kernfs_put.part.0+0x225/0x590 [ 798.922801] blk_mq_register_hctx+0x23c/0x2c0 [ 798.927286] blk_mq_sysfs_register+0x143/0x1c0 [ 798.931852] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 798.936857] ? workqueue_sysfs_register+0x391/0x3e0 [ 798.941861] ? blk_mq_init_queue+0xa0/0xa0 [ 798.946084] nbd_start_device+0x1f2/0xd60 [ 798.950223] ? security_capable+0x8f/0xc0 [ 798.954354] nbd_ioctl+0x62c/0xbe0 [ 798.957889] ? _copy_from_user+0xd2/0x130 [ 798.962034] ? nbd_disconnect_and_put+0x190/0x190 [ 798.966878] ? __lock_acquire+0x6de/0x3ff0 [ 798.971126] ? nbd_disconnect_and_put+0x190/0x190 [ 798.975952] blkdev_ioctl+0x5cb/0x1a80 [ 798.979826] ? blkpg_ioctl+0x9d0/0x9d0 [ 798.983700] ? get_pid_task+0xf4/0x190 [ 798.987572] ? mark_held_locks+0xf0/0xf0 [ 798.991614] ? proc_fail_nth_write+0x95/0x1d0 [ 798.996090] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 799.001000] ? __fdget_pos+0x26f/0x310 [ 799.004874] block_ioctl+0xe9/0x130 [ 799.008481] ? blkdev_fallocate+0x3f0/0x3f0 [ 799.012787] do_vfs_ioctl+0xcdb/0x12e0 [ 799.016659] ? lock_downgrade+0x720/0x720 [ 799.020795] ? check_preemption_disabled+0x41/0x280 [ 799.025802] ? ioctl_preallocate+0x200/0x200 [ 799.030205] ? __fget+0x356/0x510 [ 799.033650] ? do_dup2+0x450/0x450 [ 799.037190] ? vfs_write+0x393/0x540 [ 799.040889] ? fput+0x2b/0x190 [ 799.044071] ksys_ioctl+0x9b/0xc0 [ 799.047512] __x64_sys_ioctl+0x6f/0xb0 [ 799.051383] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 799.055947] do_syscall_64+0xf9/0x620 [ 799.059742] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 799.064912] RIP: 0033:0x7f03750e1089 [ 799.068605] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 799.087486] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 799.095177] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 executing program executing program [ 799.102431] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 799.109689] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 799.116950] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 799.124205] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 799.134155] kobject_add_internal failed for cpu1 (error: -12 parent: 0) [ 799.147177] block nbd1: shutting down sockets [ 799.170177] block nbd2: Device being setup by another task [ 799.176481] block nbd2: Could not allocate knbd recv work queue. [ 799.182940] block nbd3: Device being setup by another task [ 799.188852] block nbd1: Device being setup by another task [ 799.189226] block nbd2: shutting down sockets [ 799.201249] block nbd3: shutting down sockets [ 799.205836] block nbd0: Device being setup by another task [ 799.211679] block nbd5: Device being setup by another task executing program executing program executing program [ 799.217497] block nbd5: Could not allocate knbd recv work queue. [ 799.225243] block nbd0: Could not allocate knbd recv work queue. [ 799.233833] block nbd5: shutting down sockets [ 799.234462] FAULT_INJECTION: forcing a failure. [ 799.234462] name failslab, interval 1, probability 0, space 0, times 0 [ 799.239741] block nbd0: shutting down sockets [ 799.254235] block nbd1: Device being setup by another task [ 799.261315] CPU: 0 PID: 10301 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 executing program executing program [ 799.269285] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 799.278621] Call Trace: [ 799.281208] dump_stack+0x1fc/0x2ef [ 799.284836] should_fail.cold+0xa/0xf [ 799.288634] ? setup_fault_attr+0x200/0x200 [ 799.292962] ? lock_acquire+0x170/0x3c0 [ 799.296926] __should_failslab+0x115/0x180 [ 799.301276] should_failslab+0x5/0x10 [ 799.305073] kmem_cache_alloc+0x277/0x370 [ 799.309216] skb_clone+0x151/0x3d0 [ 799.312746] netlink_broadcast_filtered+0x8e5/0xbc0 [ 799.317759] netlink_broadcast+0x35/0x40 [ 799.321815] kobject_uevent_env+0xa56/0x1480 [ 799.326212] ? nbd_size_update+0x28a/0x660 [ 799.330437] ? queue_work_on+0x11a/0x1f0 [ 799.334493] nbd_start_device+0x811/0xd60 [ 799.338634] nbd_ioctl+0x62c/0xbe0 [ 799.342165] ? _copy_from_user+0xd2/0x130 [ 799.346298] ? nbd_disconnect_and_put+0x190/0x190 [ 799.351144] ? __lock_acquire+0x6de/0x3ff0 [ 799.355381] ? nbd_disconnect_and_put+0x190/0x190 [ 799.360215] blkdev_ioctl+0x5cb/0x1a80 [ 799.364093] ? blkpg_ioctl+0x9d0/0x9d0 [ 799.367980] ? get_pid_task+0xf4/0x190 [ 799.371858] ? mark_held_locks+0xf0/0xf0 [ 799.375913] ? proc_fail_nth_write+0x95/0x1d0 [ 799.380408] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 799.385326] ? __fdget_pos+0x26f/0x310 [ 799.389325] block_ioctl+0xe9/0x130 [ 799.392946] ? blkdev_fallocate+0x3f0/0x3f0 [ 799.397256] do_vfs_ioctl+0xcdb/0x12e0 [ 799.401129] ? lock_downgrade+0x720/0x720 [ 799.405261] ? check_preemption_disabled+0x41/0x280 [ 799.410276] ? ioctl_preallocate+0x200/0x200 [ 799.414694] ? __fget+0x356/0x510 [ 799.418146] ? do_dup2+0x450/0x450 [ 799.421674] ? vfs_write+0x393/0x540 [ 799.425384] ? fput+0x2b/0x190 [ 799.428573] ksys_ioctl+0x9b/0xc0 [ 799.432025] __x64_sys_ioctl+0x6f/0xb0 [ 799.435908] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 799.440479] do_syscall_64+0xf9/0x620 [ 799.444274] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 799.449455] RIP: 0033:0x7f03750e1089 [ 799.457420] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 799.476655] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 799.484355] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 799.493007] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 799.500269] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 799.507528] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 799.514783] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 executing program [ 799.522852] block nbd4: shutting down sockets [ 799.560140] block nbd3: Device being setup by another task [ 799.560938] block nbd2: Device being setup by another task [ 799.565874] block nbd1: Device being setup by another task [ 799.572459] block nbd0: Device being setup by another task [ 799.577559] block nbd3: Could not allocate knbd recv work queue. [ 799.589279] block nbd5: Device being setup by another task [ 799.594694] FAULT_INJECTION: forcing a failure. [ 799.594694] name failslab, interval 1, probability 0, space 0, times 0 [ 799.595129] block nbd2: Could not allocate knbd recv work queue. [ 799.607633] block nbd0: Could not allocate knbd recv work queue. [ 799.612522] block nbd5: Could not allocate knbd recv work queue. [ 799.621779] block nbd0: shutting down sockets [ 799.626379] block nbd3: shutting down sockets [ 799.634046] block nbd1: Could not allocate knbd recv work queue. [ 799.634853] CPU: 0 PID: 10333 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 799.642455] block nbd1: shutting down sockets [ 799.648140] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 799.655274] block nbd5: shutting down sockets [ 799.661953] Call Trace: [ 799.661972] dump_stack+0x1fc/0x2ef [ 799.661991] should_fail.cold+0xa/0xf [ 799.662008] ? setup_fault_attr+0x200/0x200 [ 799.668722] block nbd2: shutting down sockets [ 799.669052] ? lock_acquire+0x170/0x3c0 [ 799.689173] __should_failslab+0x115/0x180 [ 799.693389] should_failslab+0x5/0x10 [ 799.697171] kmem_cache_alloc+0x277/0x370 [ 799.701298] skb_clone+0x151/0x3d0 [ 799.704822] netlink_broadcast_filtered+0x8e5/0xbc0 [ 799.709826] netlink_broadcast+0x35/0x40 [ 799.713970] kobject_uevent_env+0xa56/0x1480 [ 799.718375] ? nbd_size_update+0x28a/0x660 [ 799.722611] ? queue_work_on+0x11a/0x1f0 [ 799.726657] nbd_start_device+0x811/0xd60 [ 799.730792] nbd_ioctl+0x62c/0xbe0 [ 799.734314] ? _copy_from_user+0xd2/0x130 [ 799.738443] ? nbd_disconnect_and_put+0x190/0x190 [ 799.743268] ? __lock_acquire+0x6de/0x3ff0 [ 799.747488] ? nbd_disconnect_and_put+0x190/0x190 [ 799.752314] blkdev_ioctl+0x5cb/0x1a80 [ 799.756185] ? blkpg_ioctl+0x9d0/0x9d0 [ 799.760055] ? get_pid_task+0xf4/0x190 [ 799.763923] ? mark_held_locks+0xf0/0xf0 [ 799.767966] ? proc_fail_nth_write+0x95/0x1d0 [ 799.772443] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 799.777376] ? __fdget_pos+0x26f/0x310 [ 799.781251] block_ioctl+0xe9/0x130 [ 799.784857] ? blkdev_fallocate+0x3f0/0x3f0 [ 799.789162] do_vfs_ioctl+0xcdb/0x12e0 [ 799.793030] ? lock_downgrade+0x720/0x720 [ 799.797159] ? check_preemption_disabled+0x41/0x280 [ 799.802157] ? ioctl_preallocate+0x200/0x200 [ 799.806551] ? __fget+0x356/0x510 [ 799.809995] ? do_dup2+0x450/0x450 [ 799.813518] ? vfs_write+0x393/0x540 [ 799.817214] ? fput+0x2b/0x190 [ 799.820391] ksys_ioctl+0x9b/0xc0 [ 799.823829] __x64_sys_ioctl+0x6f/0xb0 [ 799.827697] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 799.832268] do_syscall_64+0xf9/0x620 [ 799.836051] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 799.841227] RIP: 0033:0x7f03750e1089 executing program executing program executing program executing program executing program [ 799.844935] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 799.863816] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 799.871504] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 799.878776] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 799.886026] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 799.893297] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 799.900545] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 799.971459] FAULT_INJECTION: forcing a failure. [ 799.971459] name failslab, interval 1, probability 0, space 0, times 0 [ 799.971497] FAULT_INJECTION: forcing a failure. [ 799.971497] name failslab, interval 1, probability 0, space 0, times 0 [ 799.986137] CPU: 1 PID: 10347 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 800.001945] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 800.011287] Call Trace: [ 800.013872] dump_stack+0x1fc/0x2ef [ 800.017492] should_fail.cold+0xa/0xf [ 800.021289] ? setup_fault_attr+0x200/0x200 [ 800.025607] ? lock_acquire+0x170/0x3c0 [ 800.029578] __should_failslab+0x115/0x180 [ 800.033805] should_failslab+0x5/0x10 [ 800.037600] kmem_cache_alloc_trace+0x284/0x380 [ 800.042257] ? wait_for_completion_io+0x10/0x10 [ 800.046915] ? kobj_ns_initial+0x90/0x90 [ 800.050972] call_usermodehelper_setup+0x84/0x300 [ 800.055811] kobject_uevent_env+0xe83/0x1480 [ 800.060214] ? nbd_size_update+0x28a/0x660 [ 800.064438] ? queue_work_on+0x11a/0x1f0 [ 800.068494] nbd_start_device+0x811/0xd60 [ 800.072643] nbd_ioctl+0x62c/0xbe0 [ 800.076179] ? _copy_from_user+0xd2/0x130 [ 800.080318] ? nbd_disconnect_and_put+0x190/0x190 [ 800.085160] ? __lock_acquire+0x6de/0x3ff0 [ 800.089386] ? nbd_disconnect_and_put+0x190/0x190 [ 800.094219] blkdev_ioctl+0x5cb/0x1a80 [ 800.098099] ? blkpg_ioctl+0x9d0/0x9d0 [ 800.101977] ? get_pid_task+0xf4/0x190 [ 800.105853] ? mark_held_locks+0xf0/0xf0 [ 800.109903] ? proc_fail_nth_write+0x95/0x1d0 [ 800.114393] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 800.119315] ? __fdget_pos+0x26f/0x310 [ 800.123202] block_ioctl+0xe9/0x130 [ 800.126825] ? blkdev_fallocate+0x3f0/0x3f0 [ 800.131150] do_vfs_ioctl+0xcdb/0x12e0 [ 800.135033] ? lock_downgrade+0x720/0x720 [ 800.139171] ? check_preemption_disabled+0x41/0x280 [ 800.144177] ? ioctl_preallocate+0x200/0x200 [ 800.148589] ? __fget+0x356/0x510 [ 800.152034] ? do_dup2+0x450/0x450 [ 800.155561] ? vfs_write+0x393/0x540 [ 800.159266] ? fput+0x2b/0x190 [ 800.162452] ksys_ioctl+0x9b/0xc0 [ 800.165900] __x64_sys_ioctl+0x6f/0xb0 [ 800.169782] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 800.174375] do_syscall_64+0xf9/0x620 [ 800.178170] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 800.183348] RIP: 0033:0x7f03750e1089 [ 800.187050] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 800.205937] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 800.213635] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 800.221070] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 800.228325] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 800.235606] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 800.242864] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 800.250158] CPU: 0 PID: 10348 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 800.258129] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 800.267481] Call Trace: executing program [ 800.270080] dump_stack+0x1fc/0x2ef [ 800.273803] should_fail.cold+0xa/0xf [ 800.277617] ? setup_fault_attr+0x200/0x200 [ 800.281935] ? lock_acquire+0x170/0x3c0 [ 800.283509] block nbd5: shutting down sockets [ 800.285918] __should_failslab+0x115/0x180 [ 800.285937] should_failslab+0x5/0x10 [ 800.285951] kmem_cache_alloc+0x277/0x370 [ 800.285969] skb_clone+0x151/0x3d0 [ 800.306119] netlink_broadcast_filtered+0x8e5/0xbc0 [ 800.311140] netlink_broadcast+0x35/0x40 [ 800.315197] kobject_uevent_env+0xa56/0x1480 [ 800.319595] ? nbd_size_update+0x28a/0x660 [ 800.323829] ? queue_work_on+0x11a/0x1f0 [ 800.327884] nbd_start_device+0x811/0xd60 [ 800.332031] nbd_ioctl+0x62c/0xbe0 [ 800.335578] ? _copy_from_user+0xd2/0x130 [ 800.339711] ? nbd_disconnect_and_put+0x190/0x190 [ 800.344542] ? __lock_acquire+0x6de/0x3ff0 [ 800.348775] ? nbd_disconnect_and_put+0x190/0x190 [ 800.353611] blkdev_ioctl+0x5cb/0x1a80 [ 800.357492] ? blkpg_ioctl+0x9d0/0x9d0 [ 800.361363] ? get_pid_task+0xf4/0x190 [ 800.365236] ? mark_held_locks+0xf0/0xf0 [ 800.369282] ? proc_fail_nth_write+0x95/0x1d0 [ 800.373768] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 800.378684] ? __fdget_pos+0x26f/0x310 [ 800.382557] block_ioctl+0xe9/0x130 [ 800.386167] ? blkdev_fallocate+0x3f0/0x3f0 [ 800.390474] do_vfs_ioctl+0xcdb/0x12e0 [ 800.394348] ? lock_downgrade+0x720/0x720 [ 800.398654] ? check_preemption_disabled+0x41/0x280 [ 800.403652] ? ioctl_preallocate+0x200/0x200 [ 800.408050] ? __fget+0x356/0x510 [ 800.411497] ? do_dup2+0x450/0x450 [ 800.415096] ? vfs_write+0x393/0x540 [ 800.418793] ? fput+0x2b/0x190 [ 800.421975] ksys_ioctl+0x9b/0xc0 [ 800.425411] __x64_sys_ioctl+0x6f/0xb0 [ 800.429282] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 800.433860] do_syscall_64+0xf9/0x620 [ 800.437645] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 800.442820] RIP: 0033:0x7f03750e1089 [ 800.446519] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 800.465413] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 800.473105] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 800.480354] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 800.487606] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 800.494875] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 800.502136] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 800.509640] block nbd4: shutting down sockets [ 800.514765] block nbd2: shutting down sockets executing program executing program [ 800.515753] block nbd0: Could not allocate knbd recv work queue. [ 800.525599] block nbd1: Could not allocate knbd recv work queue. [ 800.535095] FAULT_INJECTION: forcing a failure. [ 800.535095] name failslab, interval 1, probability 0, space 0, times 0 [ 800.549682] block nbd1: shutting down sockets [ 800.556274] block nbd0: shutting down sockets [ 800.558846] CPU: 0 PID: 10355 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 800.568735] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 800.578071] Call Trace: [ 800.580644] dump_stack+0x1fc/0x2ef [ 800.584252] should_fail.cold+0xa/0xf [ 800.588036] ? setup_fault_attr+0x200/0x200 [ 800.592340] ? lock_acquire+0x170/0x3c0 [ 800.596314] __should_failslab+0x115/0x180 [ 800.600543] should_failslab+0x5/0x10 [ 800.604323] kmem_cache_alloc+0x277/0x370 [ 800.608468] __d_alloc+0x2b/0xa10 [ 800.611913] ? __bpf_address_lookup+0x330/0x330 [ 800.616575] ? check_preemption_disabled+0x41/0x280 [ 800.621576] d_alloc+0x4a/0x230 [ 800.624838] d_alloc_parallel+0xeb/0x19e0 [ 800.628972] ? mark_held_locks+0xf0/0xf0 [ 800.633024] ? __d_lookup_rcu+0x6b0/0x6b0 [ 800.637166] ? mark_held_locks+0xf0/0xf0 [ 800.641209] ? __lockdep_init_map+0x100/0x5a0 [ 800.645698] ? __lockdep_init_map+0x100/0x5a0 [ 800.650183] __lookup_slow+0x18d/0x4a0 [ 800.654053] ? check_preemption_disabled+0x41/0x280 [ 800.659051] ? follow_dotdot_rcu+0x1040/0x1040 [ 800.663733] ? __d_lookup+0x411/0x710 [ 800.667542] ? d_lookup+0x18e/0x250 [ 800.671157] lookup_one_len+0x163/0x190 [ 800.675113] ? try_lookup_one_len+0x180/0x180 [ 800.679600] start_creating+0xc9/0x220 [ 800.683480] __debugfs_create_file+0x5e/0x480 [ 800.687978] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 800.693147] ? kvm_clock_get_cycles+0x14/0x30 [ 800.697625] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 800.702457] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 800.707369] ? init_srcu_struct_fields+0xca6/0x1190 [ 800.712370] ? srcu_reschedule+0x120/0x120 [ 800.716602] ? __raw_spin_lock_init+0x28/0x100 [ 800.721182] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 800.725927] ? nbd_clear_que+0x160/0x160 [ 800.729971] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 800.734971] ? workqueue_sysfs_register+0x391/0x3e0 [ 800.739980] ? blk_mq_init_queue+0xa0/0xa0 [ 800.744202] nbd_start_device+0x1f2/0xd60 [ 800.748341] ? security_capable+0x8f/0xc0 [ 800.752481] nbd_ioctl+0x62c/0xbe0 [ 800.756003] ? _copy_from_user+0xd2/0x130 [ 800.760151] ? nbd_disconnect_and_put+0x190/0x190 [ 800.764996] ? __lock_acquire+0x6de/0x3ff0 [ 800.769215] ? nbd_disconnect_and_put+0x190/0x190 [ 800.774042] blkdev_ioctl+0x5cb/0x1a80 [ 800.777912] ? blkpg_ioctl+0x9d0/0x9d0 [ 800.781781] ? get_pid_task+0xf4/0x190 [ 800.785652] ? mark_held_locks+0xf0/0xf0 [ 800.789698] ? proc_fail_nth_write+0x95/0x1d0 [ 800.794178] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 800.799088] ? __fdget_pos+0x26f/0x310 [ 800.802963] block_ioctl+0xe9/0x130 [ 800.806569] ? blkdev_fallocate+0x3f0/0x3f0 [ 800.810880] do_vfs_ioctl+0xcdb/0x12e0 [ 800.814753] ? lock_downgrade+0x720/0x720 [ 800.818883] ? check_preemption_disabled+0x41/0x280 [ 800.823887] ? ioctl_preallocate+0x200/0x200 [ 800.828286] ? __fget+0x356/0x510 [ 800.831723] ? do_dup2+0x450/0x450 [ 800.835245] ? vfs_write+0x393/0x540 [ 800.838940] ? fput+0x2b/0x190 [ 800.842124] ksys_ioctl+0x9b/0xc0 [ 800.845562] __x64_sys_ioctl+0x6f/0xb0 [ 800.849431] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 800.853993] do_syscall_64+0xf9/0x620 [ 800.857778] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 800.862949] RIP: 0033:0x7f03750e1089 [ 800.866642] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 800.885524] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 800.893216] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 800.900472] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 800.907740] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 800.914992] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc executing program executing program executing program [ 800.922242] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 800.936384] block nbd3: shutting down sockets [ 800.940130] block nbd5: Device being setup by another task [ 800.953986] FAULT_INJECTION: forcing a failure. [ 800.953986] name failslab, interval 1, probability 0, space 0, times 0 [ 800.970035] block nbd4: Device being setup by another task [ 800.976450] block nbd4: Could not allocate knbd recv work queue. [ 800.983413] CPU: 1 PID: 10364 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 800.991388] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 800.992943] block nbd4: shutting down sockets [ 801.000737] Call Trace: [ 801.000757] dump_stack+0x1fc/0x2ef [ 801.000774] should_fail.cold+0xa/0xf [ 801.000790] ? setup_fault_attr+0x200/0x200 [ 801.000804] ? lock_acquire+0x170/0x3c0 executing program [ 801.000822] __should_failslab+0x115/0x180 [ 801.000837] should_failslab+0x5/0x10 [ 801.000852] kmem_cache_alloc_trace+0x284/0x380 [ 801.036205] ? wait_for_completion_io+0x10/0x10 [ 801.040875] ? kobj_ns_initial+0x90/0x90 [ 801.044991] call_usermodehelper_setup+0x84/0x300 [ 801.049831] kobject_uevent_env+0xe83/0x1480 [ 801.054228] ? nbd_size_update+0x28a/0x660 [ 801.058446] ? queue_work_on+0x11a/0x1f0 [ 801.062495] nbd_start_device+0x811/0xd60 [ 801.066631] nbd_ioctl+0x62c/0xbe0 [ 801.070160] ? _copy_from_user+0xd2/0x130 [ 801.074292] ? nbd_disconnect_and_put+0x190/0x190 [ 801.079135] ? __lock_acquire+0x6de/0x3ff0 [ 801.083355] ? nbd_disconnect_and_put+0x190/0x190 [ 801.088187] blkdev_ioctl+0x5cb/0x1a80 [ 801.092236] ? blkpg_ioctl+0x9d0/0x9d0 [ 801.096113] ? get_pid_task+0xf4/0x190 [ 801.100085] ? mark_held_locks+0xf0/0xf0 [ 801.104143] ? proc_fail_nth_write+0x95/0x1d0 [ 801.108621] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 801.113531] ? __fdget_pos+0x26f/0x310 [ 801.117408] block_ioctl+0xe9/0x130 [ 801.121017] ? blkdev_fallocate+0x3f0/0x3f0 [ 801.125330] do_vfs_ioctl+0xcdb/0x12e0 [ 801.129200] ? lock_downgrade+0x720/0x720 [ 801.133332] ? check_preemption_disabled+0x41/0x280 [ 801.138338] ? ioctl_preallocate+0x200/0x200 [ 801.142756] ? __fget+0x356/0x510 [ 801.146195] ? do_dup2+0x450/0x450 [ 801.149716] ? vfs_write+0x393/0x540 [ 801.153411] ? fput+0x2b/0x190 [ 801.156602] ksys_ioctl+0x9b/0xc0 [ 801.160059] __x64_sys_ioctl+0x6f/0xb0 [ 801.163937] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 801.168500] do_syscall_64+0xf9/0x620 [ 801.172296] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 801.177477] RIP: 0033:0x7f03750e1089 [ 801.181183] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 801.200085] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 801.207784] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 801.215038] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 801.222296] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 801.229561] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 801.236821] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 801.247256] FAULT_INJECTION: forcing a failure. [ 801.247256] name failslab, interval 1, probability 0, space 0, times 0 [ 801.258706] CPU: 1 PID: 10361 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 801.260833] block nbd1: Could not allocate knbd recv work queue. executing program [ 801.269102] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 801.269107] Call Trace: [ 801.269132] dump_stack+0x1fc/0x2ef [ 801.269150] should_fail.cold+0xa/0xf [ 801.269166] ? setup_fault_attr+0x200/0x200 [ 801.275520] block nbd0: Could not allocate knbd recv work queue. [ 801.284645] ? lock_acquire+0x170/0x3c0 [ 801.284665] __should_failslab+0x115/0x180 [ 801.284680] should_failslab+0x5/0x10 [ 801.284692] __kmalloc_track_caller+0x2a6/0x3c0 [ 801.284705] ? kstrdup_const+0x53/0x80 [ 801.284720] kstrdup+0x36/0x70 [ 801.294231] block nbd0: shutting down sockets [ 801.294680] kstrdup_const+0x53/0x80 [ 801.306493] block nbd1: shutting down sockets [ 801.309069] __kernfs_new_node+0x9b/0x680 [ 801.309084] ? kfree+0xcc/0x210 [ 801.309099] ? kobject_add+0x10d/0x1c0 [ 801.309119] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 801.357365] ? nbd_start_device+0x1f2/0xd60 [ 801.361665] ? nbd_ioctl+0x62c/0xbe0 [ 801.365357] ? blkdev_ioctl+0x5cb/0x1a80 [ 801.369406] ? do_vfs_ioctl+0xcdb/0x12e0 [ 801.373447] ? __x64_sys_ioctl+0x6f/0xb0 [ 801.377563] ? do_syscall_64+0xf9/0x620 [ 801.381524] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 801.386867] ? debug_check_no_obj_freed+0x201/0x490 [ 801.391873] kernfs_create_dir_ns+0x9e/0x230 [ 801.396277] sysfs_create_dir_ns+0x127/0x280 [ 801.400680] ? sysfs_create_mount_point+0xb0/0xb0 [ 801.405514] ? mark_held_locks+0xa6/0xf0 [ 801.409566] ? kfree+0x110/0x210 [ 801.412921] ? kfree_const+0x51/0x60 [ 801.416618] kobject_add_internal+0x2a5/0x9c0 [ 801.421096] kobject_add+0x150/0x1c0 [ 801.424796] ? kset_create_and_add+0x1a0/0x1a0 [ 801.429371] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 801.434037] ? lock_downgrade+0x720/0x720 [ 801.438173] ? kernfs_put.part.0+0x225/0x590 [ 801.442571] blk_mq_register_hctx+0x23c/0x2c0 [ 801.447051] blk_mq_sysfs_register+0x143/0x1c0 [ 801.451618] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 801.456619] ? workqueue_sysfs_register+0x391/0x3e0 [ 801.461678] ? blk_mq_init_queue+0xa0/0xa0 [ 801.465899] nbd_start_device+0x1f2/0xd60 [ 801.470036] ? security_capable+0x8f/0xc0 [ 801.474175] nbd_ioctl+0x62c/0xbe0 [ 801.477697] ? _copy_from_user+0xd2/0x130 [ 801.481828] ? nbd_disconnect_and_put+0x190/0x190 [ 801.486656] ? __lock_acquire+0x6de/0x3ff0 [ 801.490872] ? nbd_disconnect_and_put+0x190/0x190 [ 801.495697] blkdev_ioctl+0x5cb/0x1a80 [ 801.499567] ? blkpg_ioctl+0x9d0/0x9d0 [ 801.503442] ? get_pid_task+0xf4/0x190 [ 801.507322] ? mark_held_locks+0xf0/0xf0 [ 801.511363] ? proc_fail_nth_write+0x95/0x1d0 [ 801.515836] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 801.520751] ? __fdget_pos+0x26f/0x310 [ 801.524625] block_ioctl+0xe9/0x130 [ 801.528234] ? blkdev_fallocate+0x3f0/0x3f0 [ 801.532538] do_vfs_ioctl+0xcdb/0x12e0 [ 801.536405] ? lock_downgrade+0x720/0x720 [ 801.540533] ? check_preemption_disabled+0x41/0x280 [ 801.545528] ? ioctl_preallocate+0x200/0x200 [ 801.549923] ? __fget+0x356/0x510 [ 801.553358] ? do_dup2+0x450/0x450 [ 801.556881] ? vfs_write+0x393/0x540 [ 801.560576] ? fput+0x2b/0x190 [ 801.563763] ksys_ioctl+0x9b/0xc0 [ 801.567205] __x64_sys_ioctl+0x6f/0xb0 [ 801.571072] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 801.575639] do_syscall_64+0xf9/0x620 [ 801.579420] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 801.584589] RIP: 0033:0x7f03750e1089 [ 801.588284] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 801.607167] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 801.614854] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 801.622106] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 executing program executing program [ 801.629353] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 801.636599] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 801.643845] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 801.652406] kobject_add_internal failed for cpu1 (error: -12 parent: 0) [ 801.662503] block nbd5: shutting down sockets [ 801.672494] block nbd3: Could not allocate knbd recv work queue. executing program executing program [ 801.682532] block nbd3: shutting down sockets [ 801.690767] block nbd4: Device being setup by another task [ 801.696579] block nbd4: Could not allocate knbd recv work queue. [ 801.706193] block nbd4: shutting down sockets executing program [ 801.730058] block nbd0: Device being setup by another task [ 801.736935] block nbd0: Could not allocate knbd recv work queue. [ 801.744900] block nbd0: shutting down sockets [ 801.771455] FAULT_INJECTION: forcing a failure. [ 801.771455] name failslab, interval 1, probability 0, space 0, times 0 [ 801.773431] FAULT_INJECTION: forcing a failure. [ 801.773431] name failslab, interval 1, probability 0, space 0, times 0 [ 801.783456] CPU: 1 PID: 10402 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 801.801838] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 801.811187] Call Trace: [ 801.813769] dump_stack+0x1fc/0x2ef [ 801.817397] should_fail.cold+0xa/0xf [ 801.821191] ? setup_fault_attr+0x200/0x200 [ 801.825511] ? lock_acquire+0x170/0x3c0 [ 801.829483] __should_failslab+0x115/0x180 [ 801.833708] should_failslab+0x5/0x10 [ 801.837504] kmem_cache_alloc+0x277/0x370 [ 801.841643] __d_alloc+0x2b/0xa10 [ 801.845092] ? __bpf_address_lookup+0x330/0x330 [ 801.849761] ? check_preemption_disabled+0x41/0x280 [ 801.854778] d_alloc+0x4a/0x230 [ 801.858061] d_alloc_parallel+0xeb/0x19e0 [ 801.862222] ? mark_held_locks+0xf0/0xf0 [ 801.866286] ? __d_lookup_rcu+0x6b0/0x6b0 [ 801.870432] ? mark_held_locks+0xf0/0xf0 [ 801.874488] ? __lockdep_init_map+0x100/0x5a0 [ 801.878971] ? __lockdep_init_map+0x100/0x5a0 [ 801.883465] __lookup_slow+0x18d/0x4a0 [ 801.887356] ? check_preemption_disabled+0x41/0x280 [ 801.892361] ? follow_dotdot_rcu+0x1040/0x1040 [ 801.896938] ? __d_lookup+0x411/0x710 [ 801.900737] ? d_lookup+0x18e/0x250 [ 801.904359] lookup_one_len+0x163/0x190 [ 801.908322] ? try_lookup_one_len+0x180/0x180 [ 801.912814] start_creating+0xc9/0x220 [ 801.916696] __debugfs_create_file+0x5e/0x480 [ 801.921186] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 801.926366] ? kvm_clock_get_cycles+0x14/0x30 [ 801.930854] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 801.935692] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 801.940607] ? init_srcu_struct_fields+0xca6/0x1190 [ 801.945616] ? srcu_reschedule+0x120/0x120 [ 801.949843] ? __raw_spin_lock_init+0x28/0x100 [ 801.954424] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 801.959178] ? nbd_clear_que+0x160/0x160 [ 801.963239] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 801.968243] ? workqueue_sysfs_register+0x391/0x3e0 [ 801.973251] ? blk_mq_init_queue+0xa0/0xa0 [ 801.977478] ? apparmor_sb_mount+0x970/0x970 [ 801.980466] FAULT_INJECTION: forcing a failure. [ 801.980466] name failslab, interval 1, probability 0, space 0, times 0 [ 801.981881] nbd_start_device+0x1f2/0xd60 [ 801.981895] ? security_capable+0x8f/0xc0 [ 801.981914] nbd_ioctl+0x62c/0xbe0 [ 802.004842] ? _copy_from_user+0xd2/0x130 [ 802.008982] ? nbd_disconnect_and_put+0x190/0x190 [ 802.013829] ? __lock_acquire+0x6de/0x3ff0 [ 802.018065] ? nbd_disconnect_and_put+0x190/0x190 [ 802.022911] blkdev_ioctl+0x5cb/0x1a80 [ 802.026791] ? blkpg_ioctl+0x9d0/0x9d0 [ 802.030671] ? get_pid_task+0xf4/0x190 [ 802.034558] ? mark_held_locks+0xf0/0xf0 [ 802.038610] ? proc_fail_nth_write+0x95/0x1d0 [ 802.043100] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 802.048027] ? __fdget_pos+0x26f/0x310 [ 802.051925] block_ioctl+0xe9/0x130 [ 802.055547] ? blkdev_fallocate+0x3f0/0x3f0 [ 802.059864] do_vfs_ioctl+0xcdb/0x12e0 [ 802.063750] ? lock_downgrade+0x720/0x720 [ 802.067910] ? check_preemption_disabled+0x41/0x280 [ 802.072919] ? ioctl_preallocate+0x200/0x200 [ 802.077324] ? __fget+0x356/0x510 [ 802.080768] ? do_dup2+0x450/0x450 [ 802.084298] ? vfs_write+0x393/0x540 [ 802.088017] ? fput+0x2b/0x190 [ 802.091210] ksys_ioctl+0x9b/0xc0 [ 802.094661] __x64_sys_ioctl+0x6f/0xb0 [ 802.098556] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 802.103126] do_syscall_64+0xf9/0x620 [ 802.106920] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 802.112096] RIP: 0033:0x7f03750e1089 [ 802.115822] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 802.134816] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 802.142539] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 802.149797] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 802.157053] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 802.164317] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 802.171581] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 802.178895] CPU: 0 PID: 10406 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 802.186860] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 802.190833] block nbd2: shutting down sockets [ 802.196194] Call Trace: [ 802.196214] dump_stack+0x1fc/0x2ef [ 802.196232] should_fail.cold+0xa/0xf [ 802.196249] ? setup_fault_attr+0x200/0x200 [ 802.214980] ? lock_acquire+0x170/0x3c0 [ 802.218952] __should_failslab+0x115/0x180 [ 802.223267] should_failslab+0x5/0x10 [ 802.227068] kmem_cache_alloc_trace+0x284/0x380 [ 802.231727] ? wait_for_completion_io+0x10/0x10 [ 802.236385] ? kobj_ns_initial+0x90/0x90 [ 802.240450] call_usermodehelper_setup+0x84/0x300 [ 802.245384] kobject_uevent_env+0xe83/0x1480 [ 802.249793] ? nbd_size_update+0x28a/0x660 [ 802.254019] ? queue_work_on+0x11a/0x1f0 [ 802.258071] nbd_start_device+0x811/0xd60 [ 802.262220] nbd_ioctl+0x62c/0xbe0 [ 802.265766] ? _copy_from_user+0xd2/0x130 [ 802.269908] ? nbd_disconnect_and_put+0x190/0x190 [ 802.274751] ? __lock_acquire+0x6de/0x3ff0 [ 802.278980] ? nbd_disconnect_and_put+0x190/0x190 [ 802.283821] blkdev_ioctl+0x5cb/0x1a80 [ 802.287702] ? blkpg_ioctl+0x9d0/0x9d0 [ 802.291584] ? get_pid_task+0xf4/0x190 [ 802.295464] ? mark_held_locks+0xf0/0xf0 [ 802.299526] ? proc_fail_nth_write+0x95/0x1d0 [ 802.304009] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 802.308940] ? __fdget_pos+0x26f/0x310 [ 802.312836] block_ioctl+0xe9/0x130 [ 802.316452] ? blkdev_fallocate+0x3f0/0x3f0 [ 802.320763] do_vfs_ioctl+0xcdb/0x12e0 [ 802.324643] ? lock_downgrade+0x720/0x720 [ 802.328781] ? check_preemption_disabled+0x41/0x280 [ 802.333789] ? ioctl_preallocate+0x200/0x200 [ 802.338193] ? __fget+0x356/0x510 [ 802.341639] ? do_dup2+0x450/0x450 [ 802.345170] ? vfs_write+0x393/0x540 [ 802.348878] ? fput+0x2b/0x190 [ 802.352068] ksys_ioctl+0x9b/0xc0 [ 802.355515] __x64_sys_ioctl+0x6f/0xb0 [ 802.359394] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 802.363964] do_syscall_64+0xf9/0x620 [ 802.367758] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 802.372936] RIP: 0033:0x7f03750e1089 [ 802.376639] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 802.395527] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 802.403222] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 802.410475] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 802.417729] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 802.424991] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc executing program [ 802.432257] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 802.439537] CPU: 1 PID: 10408 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 802.447511] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 802.456858] Call Trace: [ 802.459458] dump_stack+0x1fc/0x2ef [ 802.463094] should_fail.cold+0xa/0xf [ 802.466902] ? setup_fault_attr+0x200/0x200 [ 802.471227] ? lock_acquire+0x170/0x3c0 [ 802.474587] block nbd3: shutting down sockets [ 802.475210] __should_failslab+0x115/0x180 executing program [ 802.475226] should_failslab+0x5/0x10 [ 802.487706] kmem_cache_alloc+0x277/0x370 [ 802.491865] skb_clone+0x151/0x3d0 [ 802.495424] netlink_broadcast_filtered+0x8e5/0xbc0 [ 802.500437] netlink_broadcast+0x35/0x40 [ 802.504483] kobject_uevent_env+0xa56/0x1480 [ 802.508887] ? nbd_size_update+0x28a/0x660 [ 802.513107] ? queue_work_on+0x11a/0x1f0 [ 802.517159] nbd_start_device+0x811/0xd60 [ 802.521300] nbd_ioctl+0x62c/0xbe0 [ 802.524826] ? _copy_from_user+0xd2/0x130 [ 802.528957] ? nbd_disconnect_and_put+0x190/0x190 [ 802.533795] ? __lock_acquire+0x6de/0x3ff0 [ 802.538023] ? nbd_disconnect_and_put+0x190/0x190 [ 802.542854] blkdev_ioctl+0x5cb/0x1a80 [ 802.546727] ? blkpg_ioctl+0x9d0/0x9d0 [ 802.550596] ? get_pid_task+0xf4/0x190 [ 802.554465] ? mark_held_locks+0xf0/0xf0 [ 802.558505] ? proc_fail_nth_write+0x95/0x1d0 [ 802.563000] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 802.567911] ? __fdget_pos+0x26f/0x310 [ 802.571786] block_ioctl+0xe9/0x130 [ 802.575394] ? blkdev_fallocate+0x3f0/0x3f0 [ 802.579705] do_vfs_ioctl+0xcdb/0x12e0 [ 802.583574] ? lock_downgrade+0x720/0x720 [ 802.587706] ? check_preemption_disabled+0x41/0x280 [ 802.592708] ? ioctl_preallocate+0x200/0x200 [ 802.597112] ? __fget+0x356/0x510 [ 802.600558] ? do_dup2+0x450/0x450 [ 802.604089] ? vfs_write+0x393/0x540 [ 802.607789] ? fput+0x2b/0x190 [ 802.610966] ksys_ioctl+0x9b/0xc0 [ 802.614401] __x64_sys_ioctl+0x6f/0xb0 [ 802.618269] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 802.622833] do_syscall_64+0xf9/0x620 [ 802.626616] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 802.631797] RIP: 0033:0x7f03750e1089 [ 802.635502] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 802.654386] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 802.662076] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 802.669327] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 802.676582] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 802.683835] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 802.691085] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 802.699015] block nbd0: Could not allocate knbd recv work queue. [ 802.705510] block nbd5: shutting down sockets [ 802.709565] FAULT_INJECTION: forcing a failure. [ 802.709565] name failslab, interval 1, probability 0, space 0, times 0 [ 802.711841] block nbd4: shutting down sockets [ 802.727271] block nbd0: shutting down sockets executing program [ 802.734051] CPU: 0 PID: 10400 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 802.742025] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 802.751377] Call Trace: [ 802.753975] dump_stack+0x1fc/0x2ef [ 802.757599] should_fail.cold+0xa/0xf [ 802.761392] ? setup_fault_attr+0x200/0x200 [ 802.765693] ? lock_acquire+0x170/0x3c0 [ 802.769651] __should_failslab+0x115/0x180 [ 802.773866] should_failslab+0x5/0x10 [ 802.777672] kmem_cache_alloc+0x277/0x370 [ 802.781803] __d_alloc+0x2b/0xa10 [ 802.785237] ? __bpf_address_lookup+0x330/0x330 [ 802.789887] ? check_preemption_disabled+0x41/0x280 [ 802.794884] d_alloc+0x4a/0x230 [ 802.798158] d_alloc_parallel+0xeb/0x19e0 [ 802.802292] ? mark_held_locks+0xf0/0xf0 [ 802.806335] ? __d_lookup_rcu+0x6b0/0x6b0 [ 802.810469] ? mark_held_locks+0xf0/0xf0 [ 802.814511] ? __lockdep_init_map+0x100/0x5a0 [ 802.818985] ? __lockdep_init_map+0x100/0x5a0 [ 802.823463] __lookup_slow+0x18d/0x4a0 [ 802.827330] ? check_preemption_disabled+0x41/0x280 [ 802.832326] ? follow_dotdot_rcu+0x1040/0x1040 [ 802.836887] ? __d_lookup+0x411/0x710 [ 802.840669] ? d_lookup+0x18e/0x250 [ 802.844278] lookup_one_len+0x163/0x190 [ 802.848233] ? try_lookup_one_len+0x180/0x180 [ 802.852711] start_creating+0xc9/0x220 [ 802.856577] __debugfs_create_file+0x5e/0x480 [ 802.861056] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 802.866223] ? kvm_clock_get_cycles+0x14/0x30 [ 802.870701] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 802.875522] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 802.880429] ? init_srcu_struct_fields+0xca6/0x1190 [ 802.885426] ? srcu_reschedule+0x120/0x120 [ 802.889641] ? __raw_spin_lock_init+0x28/0x100 [ 802.894218] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 802.898966] ? nbd_clear_que+0x160/0x160 [ 802.903012] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 802.908010] ? workqueue_sysfs_register+0x391/0x3e0 [ 802.913015] ? blk_mq_init_queue+0xa0/0xa0 [ 802.917232] ? apparmor_sb_mount+0x970/0x970 [ 802.921714] nbd_start_device+0x1f2/0xd60 [ 802.925844] ? security_capable+0x8f/0xc0 [ 802.929978] nbd_ioctl+0x62c/0xbe0 [ 802.933500] ? _copy_from_user+0xd2/0x130 [ 802.937633] ? nbd_disconnect_and_put+0x190/0x190 [ 802.942547] ? __lock_acquire+0x6de/0x3ff0 [ 802.946767] ? nbd_disconnect_and_put+0x190/0x190 [ 802.951601] blkdev_ioctl+0x5cb/0x1a80 [ 802.955479] ? blkpg_ioctl+0x9d0/0x9d0 [ 802.959349] ? get_pid_task+0xf4/0x190 [ 802.963220] ? mark_held_locks+0xf0/0xf0 [ 802.967262] ? proc_fail_nth_write+0x95/0x1d0 [ 802.971740] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 802.976654] ? __fdget_pos+0x26f/0x310 [ 802.980537] block_ioctl+0xe9/0x130 [ 802.984143] ? blkdev_fallocate+0x3f0/0x3f0 [ 802.988444] do_vfs_ioctl+0xcdb/0x12e0 [ 802.992313] ? lock_downgrade+0x720/0x720 [ 802.996439] ? check_preemption_disabled+0x41/0x280 [ 803.001433] ? ioctl_preallocate+0x200/0x200 [ 803.005823] ? __fget+0x356/0x510 [ 803.009262] ? do_dup2+0x450/0x450 [ 803.012780] ? vfs_write+0x393/0x540 [ 803.016474] ? fput+0x2b/0x190 [ 803.019649] ksys_ioctl+0x9b/0xc0 [ 803.023081] __x64_sys_ioctl+0x6f/0xb0 [ 803.026952] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 803.031514] do_syscall_64+0xf9/0x620 [ 803.035295] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 803.040471] RIP: 0033:0x7f03750e1089 [ 803.044163] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 803.063038] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 803.070724] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 803.077973] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 executing program executing program [ 803.085221] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 803.092468] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 803.099717] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 803.125219] block nbd1: shutting down sockets [ 803.130141] block nbd2: Device being setup by another task executing program [ 803.135921] block nbd3: Device being setup by another task executing program [ 803.170008] block nbd5: Device being setup by another task [ 803.175793] block nbd5: Could not allocate knbd recv work queue. [ 803.184905] block nbd5: shutting down sockets [ 803.193227] FAULT_INJECTION: forcing a failure. [ 803.193227] name failslab, interval 1, probability 0, space 0, times 0 [ 803.199111] FAULT_INJECTION: forcing a failure. [ 803.199111] name failslab, interval 1, probability 0, space 0, times 0 [ 803.213481] CPU: 0 PID: 10425 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 803.218244] FAULT_INJECTION: forcing a failure. [ 803.218244] name failslab, interval 1, probability 0, space 0, times 0 [ 803.223837] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 803.223842] Call Trace: [ 803.223861] dump_stack+0x1fc/0x2ef [ 803.223878] should_fail.cold+0xa/0xf [ 803.223894] ? setup_fault_attr+0x200/0x200 [ 803.223914] ? lock_acquire+0x170/0x3c0 [ 803.262621] __should_failslab+0x115/0x180 [ 803.266859] should_failslab+0x5/0x10 [ 803.270666] __kmalloc_track_caller+0x2a6/0x3c0 [ 803.275337] ? kstrdup_const+0x53/0x80 [ 803.279230] kstrdup+0x36/0x70 [ 803.282514] kstrdup_const+0x53/0x80 [ 803.286230] __kernfs_new_node+0x9b/0x680 [ 803.290402] ? kfree+0xcc/0x210 [ 803.293686] ? kobject_add+0x10d/0x1c0 [ 803.297570] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 803.302319] ? nbd_start_device+0x1f2/0xd60 [ 803.306634] ? nbd_ioctl+0x62c/0xbe0 [ 803.310339] ? blkdev_ioctl+0x5cb/0x1a80 [ 803.314391] ? do_vfs_ioctl+0xcdb/0x12e0 [ 803.318448] ? __x64_sys_ioctl+0x6f/0xb0 [ 803.322507] ? do_syscall_64+0xf9/0x620 [ 803.326474] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 803.331949] ? debug_check_no_obj_freed+0x201/0x490 [ 803.336972] kernfs_create_dir_ns+0x9e/0x230 [ 803.341379] sysfs_create_dir_ns+0x127/0x280 [ 803.345776] ? sysfs_create_mount_point+0xb0/0xb0 [ 803.350616] ? mark_held_locks+0xa6/0xf0 [ 803.354675] ? kfree+0x110/0x210 [ 803.358035] ? kfree_const+0x51/0x60 [ 803.361742] kobject_add_internal+0x2a5/0x9c0 [ 803.366231] kobject_add+0x150/0x1c0 [ 803.369934] ? kset_create_and_add+0x1a0/0x1a0 [ 803.374505] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 803.379167] ? lock_downgrade+0x720/0x720 [ 803.383347] ? kernfs_put.part.0+0x225/0x590 [ 803.387752] blk_mq_register_hctx+0x23c/0x2c0 [ 803.392237] blk_mq_sysfs_register+0x143/0x1c0 [ 803.396812] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 803.401822] ? workqueue_sysfs_register+0x391/0x3e0 [ 803.406834] ? blk_mq_init_queue+0xa0/0xa0 [ 803.411064] nbd_start_device+0x1f2/0xd60 [ 803.415205] ? security_capable+0x8f/0xc0 [ 803.419351] nbd_ioctl+0x62c/0xbe0 [ 803.422881] ? _copy_from_user+0xd2/0x130 [ 803.427017] ? nbd_disconnect_and_put+0x190/0x190 [ 803.431857] ? __lock_acquire+0x6de/0x3ff0 [ 803.436099] ? nbd_disconnect_and_put+0x190/0x190 [ 803.440930] blkdev_ioctl+0x5cb/0x1a80 [ 803.444807] ? blkpg_ioctl+0x9d0/0x9d0 [ 803.448683] ? get_pid_task+0xf4/0x190 [ 803.452560] ? mark_held_locks+0xf0/0xf0 [ 803.456607] ? proc_fail_nth_write+0x95/0x1d0 [ 803.461093] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 803.466097] ? __fdget_pos+0x26f/0x310 [ 803.469988] block_ioctl+0xe9/0x130 [ 803.473601] ? blkdev_fallocate+0x3f0/0x3f0 [ 803.477914] do_vfs_ioctl+0xcdb/0x12e0 [ 803.481793] ? lock_downgrade+0x720/0x720 [ 803.485932] ? check_preemption_disabled+0x41/0x280 [ 803.490936] ? ioctl_preallocate+0x200/0x200 [ 803.495365] ? __fget+0x356/0x510 [ 803.498812] ? do_dup2+0x450/0x450 [ 803.502340] ? vfs_write+0x393/0x540 [ 803.506047] ? fput+0x2b/0x190 [ 803.509235] ksys_ioctl+0x9b/0xc0 [ 803.512690] __x64_sys_ioctl+0x6f/0xb0 [ 803.516574] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 803.521145] do_syscall_64+0xf9/0x620 [ 803.524938] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 803.530114] RIP: 0033:0x7f03750e1089 [ 803.533819] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 803.552723] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 803.560427] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 803.567687] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 803.574945] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 803.582200] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 803.589455] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 803.601059] block nbd0: shutting down sockets [ 803.605157] CPU: 1 PID: 10424 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 803.607673] kobject_add_internal failed for cpu1 (error: -12 parent: 0) [ 803.613505] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 803.613511] Call Trace: [ 803.613529] dump_stack+0x1fc/0x2ef [ 803.613547] should_fail.cold+0xa/0xf [ 803.613564] ? setup_fault_attr+0x200/0x200 [ 803.613578] ? lock_acquire+0x170/0x3c0 [ 803.613596] __should_failslab+0x115/0x180 [ 803.613611] should_failslab+0x5/0x10 [ 803.613624] __kmalloc_track_caller+0x2a6/0x3c0 [ 803.613639] ? kstrdup_const+0x53/0x80 [ 803.613655] kstrdup+0x36/0x70 [ 803.613670] kstrdup_const+0x53/0x80 [ 803.613684] __kernfs_new_node+0x9b/0x680 [ 803.613695] ? kfree+0xcc/0x210 [ 803.613725] ? kobject_add+0x10d/0x1c0 [ 803.613739] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 803.613753] ? nbd_start_device+0x1f2/0xd60 [ 803.613765] ? nbd_ioctl+0x62c/0xbe0 [ 803.613777] ? blkdev_ioctl+0x5cb/0x1a80 [ 803.613788] ? do_vfs_ioctl+0xcdb/0x12e0 [ 803.613804] ? __x64_sys_ioctl+0x6f/0xb0 [ 803.627016] block nbd3: shutting down sockets [ 803.629880] ? do_syscall_64+0xf9/0x620 [ 803.629894] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 803.629911] ? debug_check_no_obj_freed+0x201/0x490 [ 803.629932] kernfs_create_dir_ns+0x9e/0x230 [ 803.629947] sysfs_create_dir_ns+0x127/0x280 [ 803.629961] ? sysfs_create_mount_point+0xb0/0xb0 [ 803.740015] ? mark_held_locks+0xa6/0xf0 [ 803.744066] ? kfree+0x110/0x210 [ 803.747422] ? kfree_const+0x51/0x60 [ 803.751216] kobject_add_internal+0x2a5/0x9c0 [ 803.755704] kobject_add+0x150/0x1c0 [ 803.759409] ? kset_create_and_add+0x1a0/0x1a0 [ 803.763979] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 803.768638] ? lock_downgrade+0x720/0x720 [ 803.772773] ? kernfs_put.part.0+0x225/0x590 [ 803.777174] blk_mq_register_hctx+0x23c/0x2c0 [ 803.781661] blk_mq_sysfs_register+0x143/0x1c0 [ 803.786234] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 803.791237] ? workqueue_sysfs_register+0x391/0x3e0 [ 803.796246] ? blk_mq_init_queue+0xa0/0xa0 [ 803.800491] nbd_start_device+0x1f2/0xd60 [ 803.804634] ? security_capable+0x8f/0xc0 [ 803.808778] nbd_ioctl+0x62c/0xbe0 [ 803.812334] ? _copy_from_user+0xd2/0x130 [ 803.816476] ? nbd_disconnect_and_put+0x190/0x190 [ 803.821341] ? __lock_acquire+0x6de/0x3ff0 [ 803.825571] ? nbd_disconnect_and_put+0x190/0x190 [ 803.830403] blkdev_ioctl+0x5cb/0x1a80 [ 803.834278] ? blkpg_ioctl+0x9d0/0x9d0 [ 803.838154] ? get_pid_task+0xf4/0x190 [ 803.842032] ? mark_held_locks+0xf0/0xf0 [ 803.846079] ? proc_fail_nth_write+0x95/0x1d0 [ 803.850563] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 803.855482] ? __fdget_pos+0x26f/0x310 [ 803.859367] block_ioctl+0xe9/0x130 [ 803.862982] ? blkdev_fallocate+0x3f0/0x3f0 [ 803.867291] do_vfs_ioctl+0xcdb/0x12e0 [ 803.871203] ? lock_downgrade+0x720/0x720 [ 803.875343] ? check_preemption_disabled+0x41/0x280 [ 803.880346] ? ioctl_preallocate+0x200/0x200 [ 803.884746] ? __fget+0x356/0x510 [ 803.888187] ? do_dup2+0x450/0x450 [ 803.891718] ? vfs_write+0x393/0x540 [ 803.895420] ? fput+0x2b/0x190 [ 803.898609] ksys_ioctl+0x9b/0xc0 [ 803.902056] __x64_sys_ioctl+0x6f/0xb0 [ 803.905933] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 803.910593] do_syscall_64+0xf9/0x620 [ 803.914388] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 803.919564] RIP: 0033:0x7f03750e1089 [ 803.923279] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 803.942162] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 803.949855] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 803.957111] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 803.964373] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 executing program [ 803.971630] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 803.978885] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 803.986161] CPU: 0 PID: 10436 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 803.990704] kobject_add_internal failed for cpu1 (error: -12 parent: 0) [ 803.994127] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 803.994132] Call Trace: [ 803.994152] dump_stack+0x1fc/0x2ef [ 803.994172] should_fail.cold+0xa/0xf executing program executing program [ 803.994187] ? setup_fault_attr+0x200/0x200 [ 803.994203] ? lock_acquire+0x170/0x3c0 [ 804.006385] block nbd2: shutting down sockets [ 804.010280] __should_failslab+0x115/0x180 [ 804.010299] should_failslab+0x5/0x10 [ 804.010313] kmem_cache_alloc_trace+0x284/0x380 [ 804.010325] ? wait_for_completion_io+0x10/0x10 [ 804.010340] ? kobj_ns_initial+0x90/0x90 [ 804.010356] call_usermodehelper_setup+0x84/0x300 [ 804.050356] block nbd1: Could not allocate knbd recv work queue. [ 804.050464] kobject_uevent_env+0xe83/0x1480 executing program [ 804.056825] block nbd1: shutting down sockets [ 804.059331] ? nbd_size_update+0x28a/0x660 [ 804.059348] ? queue_work_on+0x11a/0x1f0 [ 804.059365] nbd_start_device+0x811/0xd60 [ 804.059386] nbd_ioctl+0x62c/0xbe0 [ 804.090545] ? _copy_from_user+0xd2/0x130 [ 804.094687] ? nbd_disconnect_and_put+0x190/0x190 [ 804.099519] ? __lock_acquire+0x6de/0x3ff0 [ 804.104105] ? nbd_disconnect_and_put+0x190/0x190 [ 804.108942] blkdev_ioctl+0x5cb/0x1a80 [ 804.112816] ? blkpg_ioctl+0x9d0/0x9d0 [ 804.116686] ? get_pid_task+0xf4/0x190 [ 804.120553] ? mark_held_locks+0xf0/0xf0 [ 804.124600] ? proc_fail_nth_write+0x95/0x1d0 [ 804.129082] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 804.134005] ? __fdget_pos+0x26f/0x310 [ 804.137905] block_ioctl+0xe9/0x130 [ 804.141522] ? blkdev_fallocate+0x3f0/0x3f0 [ 804.145823] do_vfs_ioctl+0xcdb/0x12e0 [ 804.149696] ? lock_downgrade+0x720/0x720 [ 804.153833] ? check_preemption_disabled+0x41/0x280 [ 804.158841] ? ioctl_preallocate+0x200/0x200 [ 804.163230] ? __fget+0x356/0x510 [ 804.166680] ? do_dup2+0x450/0x450 [ 804.170209] ? vfs_write+0x393/0x540 [ 804.173906] ? fput+0x2b/0x190 [ 804.177089] ksys_ioctl+0x9b/0xc0 [ 804.180549] __x64_sys_ioctl+0x6f/0xb0 [ 804.184445] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 804.189018] do_syscall_64+0xf9/0x620 [ 804.192819] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 804.197994] RIP: 0033:0x7f03750e1089 [ 804.201690] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 804.220585] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 804.228362] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 804.235620] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 804.242881] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 804.250228] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 804.257493] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 executing program [ 804.272110] block nbd4: shutting down sockets executing program [ 804.300444] block nbd5: Device being setup by another task [ 804.306450] block nbd0: Device being setup by another task [ 804.308868] block nbd5: shutting down sockets [ 804.316938] block nbd0: Could not allocate knbd recv work queue. [ 804.325196] block nbd0: shutting down sockets [ 804.330991] block nbd3: Device being setup by another task [ 804.336799] block nbd1: Device being setup by another task [ 804.336825] block nbd3: Could not allocate knbd recv work queue. executing program executing program [ 804.342611] block nbd2: Device being setup by another task [ 804.350229] block nbd3: shutting down sockets [ 804.362864] FAULT_INJECTION: forcing a failure. [ 804.362864] name failslab, interval 1, probability 0, space 0, times 0 [ 804.374956] FAULT_INJECTION: forcing a failure. [ 804.374956] name failslab, interval 1, probability 0, space 0, times 0 [ 804.381014] CPU: 1 PID: 10474 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 804.394108] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 804.403463] Call Trace: [ 804.406049] dump_stack+0x1fc/0x2ef [ 804.409681] should_fail.cold+0xa/0xf [ 804.413475] ? setup_fault_attr+0x200/0x200 [ 804.417793] ? lock_acquire+0x170/0x3c0 [ 804.421767] __should_failslab+0x115/0x180 [ 804.426004] should_failslab+0x5/0x10 [ 804.429805] kmem_cache_alloc_trace+0x284/0x380 [ 804.434466] ? wait_for_completion_io+0x10/0x10 [ 804.439129] ? kobj_ns_initial+0x90/0x90 [ 804.443207] call_usermodehelper_setup+0x84/0x300 [ 804.448073] kobject_uevent_env+0xe83/0x1480 [ 804.452483] ? nbd_size_update+0x28a/0x660 [ 804.456711] ? queue_work_on+0x11a/0x1f0 [ 804.460762] nbd_start_device+0x811/0xd60 [ 804.464924] nbd_ioctl+0x62c/0xbe0 [ 804.468455] ? _copy_from_user+0xd2/0x130 [ 804.472590] ? nbd_disconnect_and_put+0x190/0x190 [ 804.477428] ? __lock_acquire+0x6de/0x3ff0 [ 804.481659] ? nbd_disconnect_and_put+0x190/0x190 [ 804.486493] blkdev_ioctl+0x5cb/0x1a80 [ 804.490371] ? blkpg_ioctl+0x9d0/0x9d0 [ 804.494253] ? get_pid_task+0xf4/0x190 [ 804.498137] ? mark_held_locks+0xf0/0xf0 [ 804.502186] ? proc_fail_nth_write+0x95/0x1d0 [ 804.506671] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 804.511602] ? __fdget_pos+0x26f/0x310 [ 804.515491] block_ioctl+0xe9/0x130 [ 804.519104] ? blkdev_fallocate+0x3f0/0x3f0 [ 804.523418] do_vfs_ioctl+0xcdb/0x12e0 [ 804.527300] ? lock_downgrade+0x720/0x720 [ 804.531438] ? check_preemption_disabled+0x41/0x280 [ 804.536442] ? ioctl_preallocate+0x200/0x200 [ 804.540845] ? __fget+0x356/0x510 [ 804.544288] ? do_dup2+0x450/0x450 [ 804.547816] ? vfs_write+0x393/0x540 [ 804.551520] ? fput+0x2b/0x190 [ 804.554712] ksys_ioctl+0x9b/0xc0 [ 804.558160] __x64_sys_ioctl+0x6f/0xb0 [ 804.562122] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 804.566701] do_syscall_64+0xf9/0x620 [ 804.570493] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 804.575672] RIP: 0033:0x7f03750e1089 [ 804.579384] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 804.598276] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 804.605974] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 804.613238] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 804.620496] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 804.627755] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 804.635024] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 804.642301] CPU: 0 PID: 10486 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 804.643062] block nbd2: shutting down sockets [ 804.650282] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 804.650287] Call Trace: [ 804.650306] dump_stack+0x1fc/0x2ef [ 804.650323] should_fail.cold+0xa/0xf [ 804.650341] ? setup_fault_attr+0x200/0x200 [ 804.650355] ? lock_acquire+0x170/0x3c0 [ 804.650373] __should_failslab+0x115/0x180 [ 804.650387] should_failslab+0x5/0x10 [ 804.650399] kmem_cache_alloc+0x277/0x370 [ 804.650413] skb_clone+0x151/0x3d0 [ 804.650430] netlink_broadcast_filtered+0x8e5/0xbc0 [ 804.650452] netlink_broadcast+0x35/0x40 [ 804.650469] kobject_uevent_env+0xa56/0x1480 [ 804.650486] ? nbd_size_update+0x28a/0x660 [ 804.715706] ? queue_work_on+0x11a/0x1f0 [ 804.719754] nbd_start_device+0x811/0xd60 [ 804.723888] nbd_ioctl+0x62c/0xbe0 [ 804.727408] ? _copy_from_user+0xd2/0x130 [ 804.731535] ? nbd_disconnect_and_put+0x190/0x190 [ 804.736361] ? __lock_acquire+0x6de/0x3ff0 [ 804.740575] ? nbd_disconnect_and_put+0x190/0x190 [ 804.745398] blkdev_ioctl+0x5cb/0x1a80 [ 804.749283] ? blkpg_ioctl+0x9d0/0x9d0 [ 804.753154] ? get_pid_task+0xf4/0x190 [ 804.757022] ? mark_held_locks+0xf0/0xf0 [ 804.761064] ? proc_fail_nth_write+0x95/0x1d0 [ 804.765547] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 804.770468] ? __fdget_pos+0x26f/0x310 [ 804.774346] block_ioctl+0xe9/0x130 [ 804.777952] ? blkdev_fallocate+0x3f0/0x3f0 [ 804.782252] do_vfs_ioctl+0xcdb/0x12e0 [ 804.786123] ? lock_downgrade+0x720/0x720 [ 804.790248] ? check_preemption_disabled+0x41/0x280 [ 804.795248] ? ioctl_preallocate+0x200/0x200 [ 804.799641] ? __fget+0x356/0x510 [ 804.803079] ? do_dup2+0x450/0x450 [ 804.806596] ? vfs_write+0x393/0x540 [ 804.810290] ? fput+0x2b/0x190 [ 804.813467] ksys_ioctl+0x9b/0xc0 [ 804.816908] __x64_sys_ioctl+0x6f/0xb0 [ 804.820781] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 804.825352] do_syscall_64+0xf9/0x620 [ 804.829149] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 804.834329] RIP: 0033:0x7f03750e1089 [ 804.838023] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 804.856911] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 804.864596] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 804.871851] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 804.879097] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 804.886342] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 804.893674] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 executing program [ 804.903103] block nbd5: Could not allocate knbd recv work queue. [ 804.903582] FAULT_INJECTION: forcing a failure. [ 804.903582] name failslab, interval 1, probability 0, space 0, times 0 [ 804.911087] block nbd5: shutting down sockets [ 804.926586] block nbd4: shutting down sockets [ 804.929341] CPU: 0 PID: 10473 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 804.939041] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 804.948391] Call Trace: [ 804.950989] dump_stack+0x1fc/0x2ef [ 804.954685] should_fail.cold+0xa/0xf [ 804.958466] ? setup_fault_attr+0x200/0x200 [ 804.962767] ? lock_acquire+0x170/0x3c0 [ 804.966726] __should_failslab+0x115/0x180 [ 804.970941] should_failslab+0x5/0x10 [ 804.974720] __kmalloc_track_caller+0x2a6/0x3c0 [ 804.979369] ? kstrdup_const+0x53/0x80 [ 804.983237] kstrdup+0x36/0x70 [ 804.986411] kstrdup_const+0x53/0x80 [ 804.990122] __kernfs_new_node+0x9b/0x680 [ 804.994253] ? kfree+0xcc/0x210 [ 804.997516] ? kobject_add+0x10d/0x1c0 [ 805.001380] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 805.006118] ? nbd_start_device+0x1f2/0xd60 [ 805.010415] ? nbd_ioctl+0x62c/0xbe0 [ 805.014105] ? blkdev_ioctl+0x5cb/0x1a80 [ 805.018159] ? do_vfs_ioctl+0xcdb/0x12e0 [ 805.022199] ? __x64_sys_ioctl+0x6f/0xb0 [ 805.026244] ? do_syscall_64+0xf9/0x620 [ 805.030197] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 805.035539] ? debug_check_no_obj_freed+0x201/0x490 [ 805.040540] kernfs_create_dir_ns+0x9e/0x230 [ 805.044928] sysfs_create_dir_ns+0x127/0x280 [ 805.049321] ? sysfs_create_mount_point+0xb0/0xb0 [ 805.054142] ? mark_held_locks+0xa6/0xf0 [ 805.058204] ? kfree+0x110/0x210 [ 805.061549] ? kfree_const+0x51/0x60 [ 805.065247] kobject_add_internal+0x2a5/0x9c0 [ 805.069735] kobject_add+0x150/0x1c0 [ 805.073429] ? kset_create_and_add+0x1a0/0x1a0 [ 805.077989] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 805.082657] ? lock_downgrade+0x720/0x720 [ 805.086790] ? kernfs_put.part.0+0x225/0x590 [ 805.091181] blk_mq_register_hctx+0x23c/0x2c0 [ 805.095658] blk_mq_sysfs_register+0x143/0x1c0 [ 805.100218] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 805.105215] ? workqueue_sysfs_register+0x391/0x3e0 [ 805.110219] ? blk_mq_init_queue+0xa0/0xa0 [ 805.114439] nbd_start_device+0x1f2/0xd60 [ 805.118570] ? security_capable+0x8f/0xc0 [ 805.122698] nbd_ioctl+0x62c/0xbe0 [ 805.126220] ? _copy_from_user+0xd2/0x130 [ 805.130349] ? nbd_disconnect_and_put+0x190/0x190 [ 805.135213] ? __lock_acquire+0x6de/0x3ff0 [ 805.139442] ? nbd_disconnect_and_put+0x190/0x190 [ 805.144265] blkdev_ioctl+0x5cb/0x1a80 [ 805.148130] ? blkpg_ioctl+0x9d0/0x9d0 [ 805.151997] ? get_pid_task+0xf4/0x190 [ 805.155863] ? mark_held_locks+0xf0/0xf0 [ 805.159902] ? proc_fail_nth_write+0x95/0x1d0 [ 805.164374] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 805.169283] ? __fdget_pos+0x26f/0x310 [ 805.173155] block_ioctl+0xe9/0x130 [ 805.176757] ? blkdev_fallocate+0x3f0/0x3f0 [ 805.181072] do_vfs_ioctl+0xcdb/0x12e0 [ 805.184939] ? lock_downgrade+0x720/0x720 [ 805.189086] ? check_preemption_disabled+0x41/0x280 [ 805.194079] ? ioctl_preallocate+0x200/0x200 [ 805.198467] ? __fget+0x356/0x510 [ 805.201902] ? do_dup2+0x450/0x450 [ 805.205418] ? vfs_write+0x393/0x540 [ 805.209111] ? fput+0x2b/0x190 [ 805.212284] ksys_ioctl+0x9b/0xc0 [ 805.215716] __x64_sys_ioctl+0x6f/0xb0 [ 805.219582] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 805.224142] do_syscall_64+0xf9/0x620 [ 805.227924] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 805.233098] RIP: 0033:0x7f03750e1089 executing program [ 805.236791] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 805.255677] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 805.263369] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 805.270632] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 805.277878] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 805.285222] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 805.292468] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 executing program executing program executing program [ 805.303888] kobject_add_internal failed for cpu1 (error: -12 parent: 0) [ 805.309973] block nbd0: Device being setup by another task [ 805.317531] block nbd1: shutting down sockets [ 805.318448] block nbd0: Could not allocate knbd recv work queue. [ 805.322662] block nbd3: Device being setup by another task [ 805.331174] block nbd0: shutting down sockets [ 805.344598] block nbd3: Could not allocate knbd recv work queue. executing program [ 805.356761] block nbd3: shutting down sockets [ 805.380144] block nbd2: Device being setup by another task [ 805.386517] FAULT_INJECTION: forcing a failure. [ 805.386517] name failslab, interval 1, probability 0, space 0, times 0 [ 805.392703] block nbd1: Device being setup by another task [ 805.398684] CPU: 0 PID: 10496 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 805.411371] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 805.420721] Call Trace: [ 805.423310] dump_stack+0x1fc/0x2ef [ 805.426932] should_fail.cold+0xa/0xf [ 805.430727] ? setup_fault_attr+0x200/0x200 [ 805.435031] ? lock_acquire+0x170/0x3c0 [ 805.438990] __should_failslab+0x115/0x180 [ 805.443212] should_failslab+0x5/0x10 [ 805.447003] kmem_cache_alloc+0x277/0x370 [ 805.451145] skb_clone+0x151/0x3d0 [ 805.454680] netlink_broadcast_filtered+0x8e5/0xbc0 [ 805.459713] netlink_broadcast+0x35/0x40 [ 805.463768] kobject_uevent_env+0xa56/0x1480 [ 805.468165] ? nbd_size_update+0x28a/0x660 [ 805.472380] ? queue_work_on+0x11a/0x1f0 [ 805.476422] nbd_start_device+0x811/0xd60 [ 805.480641] nbd_ioctl+0x62c/0xbe0 [ 805.484165] ? _copy_from_user+0xd2/0x130 [ 805.488312] ? nbd_disconnect_and_put+0x190/0x190 [ 805.493144] ? __lock_acquire+0x6de/0x3ff0 [ 805.497370] ? nbd_disconnect_and_put+0x190/0x190 [ 805.502202] blkdev_ioctl+0x5cb/0x1a80 [ 805.506082] ? blkpg_ioctl+0x9d0/0x9d0 [ 805.509962] ? get_pid_task+0xf4/0x190 [ 805.513842] ? mark_held_locks+0xf0/0xf0 [ 805.517889] ? proc_fail_nth_write+0x95/0x1d0 [ 805.522366] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 805.527285] ? __fdget_pos+0x26f/0x310 [ 805.531163] block_ioctl+0xe9/0x130 [ 805.534788] ? blkdev_fallocate+0x3f0/0x3f0 [ 805.539098] do_vfs_ioctl+0xcdb/0x12e0 [ 805.542966] ? lock_downgrade+0x720/0x720 [ 805.547101] ? check_preemption_disabled+0x41/0x280 [ 805.552118] ? ioctl_preallocate+0x200/0x200 [ 805.556515] ? __fget+0x356/0x510 [ 805.559949] ? do_dup2+0x450/0x450 [ 805.563470] ? vfs_write+0x393/0x540 [ 805.567166] ? fput+0x2b/0x190 [ 805.570356] ksys_ioctl+0x9b/0xc0 [ 805.573800] __x64_sys_ioctl+0x6f/0xb0 [ 805.577666] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 805.582243] do_syscall_64+0xf9/0x620 [ 805.586045] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 805.591235] RIP: 0033:0x7f03750e1089 [ 805.594928] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 805.613810] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 805.621503] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 805.628762] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 805.636011] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 805.643268] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 805.650520] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 805.670133] block nbd1: Device being setup by another task [ 805.670516] FAULT_INJECTION: forcing a failure. [ 805.670516] name failslab, interval 1, probability 0, space 0, times 0 [ 805.677638] block nbd5: Could not allocate knbd recv work queue. [ 805.687530] CPU: 0 PID: 10517 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 805.701112] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 805.701516] block nbd5: shutting down sockets [ 805.710450] Call Trace: [ 805.710469] dump_stack+0x1fc/0x2ef [ 805.710487] should_fail.cold+0xa/0xf [ 805.710503] ? setup_fault_attr+0x200/0x200 [ 805.710519] ? lock_acquire+0x170/0x3c0 [ 805.733177] __should_failslab+0x115/0x180 [ 805.737411] should_failslab+0x5/0x10 [ 805.741190] kmem_cache_alloc_node_trace+0x244/0x3b0 [ 805.746273] __kmalloc_node_track_caller+0x38/0x70 [ 805.751192] __alloc_skb+0xae/0x560 [ 805.754803] alloc_uevent_skb+0x7b/0x210 [ 805.758843] kobject_uevent_env+0xa90/0x1480 [ 805.763234] ? nbd_size_update+0x28a/0x660 [ 805.767449] ? queue_work_on+0x11a/0x1f0 [ 805.771489] nbd_start_device+0x811/0xd60 [ 805.775628] nbd_ioctl+0x62c/0xbe0 [ 805.779209] ? _copy_from_user+0xd2/0x130 [ 805.783336] ? nbd_disconnect_and_put+0x190/0x190 [ 805.788165] ? __lock_acquire+0x6de/0x3ff0 [ 805.792378] ? nbd_disconnect_and_put+0x190/0x190 [ 805.797202] blkdev_ioctl+0x5cb/0x1a80 [ 805.801068] ? blkpg_ioctl+0x9d0/0x9d0 [ 805.804934] ? get_pid_task+0xf4/0x190 [ 805.808799] ? mark_held_locks+0xf0/0xf0 [ 805.812836] ? proc_fail_nth_write+0x95/0x1d0 [ 805.817309] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 805.822216] ? __fdget_pos+0x26f/0x310 [ 805.826087] block_ioctl+0xe9/0x130 [ 805.829704] ? blkdev_fallocate+0x3f0/0x3f0 [ 805.834007] do_vfs_ioctl+0xcdb/0x12e0 [ 805.837872] ? lock_downgrade+0x720/0x720 [ 805.842000] ? check_preemption_disabled+0x41/0x280 [ 805.846997] ? ioctl_preallocate+0x200/0x200 [ 805.851390] ? __fget+0x356/0x510 [ 805.854822] ? do_dup2+0x450/0x450 [ 805.858338] ? vfs_write+0x393/0x540 [ 805.862030] ? fput+0x2b/0x190 [ 805.865206] ksys_ioctl+0x9b/0xc0 [ 805.868640] __x64_sys_ioctl+0x6f/0xb0 [ 805.872511] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 805.877070] do_syscall_64+0xf9/0x620 [ 805.880856] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 805.886024] RIP: 0033:0x7f03750e1089 [ 805.889715] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 805.908594] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 805.916277] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 805.923524] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 executing program executing program [ 805.930859] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 805.938103] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 805.945354] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 805.956523] FAULT_INJECTION: forcing a failure. [ 805.956523] name failslab, interval 1, probability 0, space 0, times 0 [ 805.971370] FAULT_INJECTION: forcing a failure. [ 805.971370] name failslab, interval 1, probability 0, space 0, times 0 [ 805.983436] CPU: 1 PID: 10518 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 805.991408] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 806.000749] Call Trace: [ 806.003335] dump_stack+0x1fc/0x2ef [ 806.006966] should_fail.cold+0xa/0xf [ 806.010764] ? setup_fault_attr+0x200/0x200 [ 806.015074] ? lock_acquire+0x170/0x3c0 [ 806.019041] __should_failslab+0x115/0x180 [ 806.023265] should_failslab+0x5/0x10 [ 806.027055] kmem_cache_alloc_trace+0x284/0x380 [ 806.031711] ? wait_for_completion_io+0x10/0x10 [ 806.036372] ? kobj_ns_initial+0x90/0x90 [ 806.040430] call_usermodehelper_setup+0x84/0x300 [ 806.045269] kobject_uevent_env+0xe83/0x1480 [ 806.049709] ? nbd_size_update+0x28a/0x660 [ 806.053943] ? queue_work_on+0x11a/0x1f0 [ 806.057995] nbd_start_device+0x811/0xd60 [ 806.062141] nbd_ioctl+0x62c/0xbe0 [ 806.065537] block nbd2: shutting down sockets [ 806.065674] ? _copy_from_user+0xd2/0x130 [ 806.065689] ? nbd_disconnect_and_put+0x190/0x190 [ 806.065707] ? __lock_acquire+0x6de/0x3ff0 [ 806.083370] ? nbd_disconnect_and_put+0x190/0x190 [ 806.085751] block nbd4: shutting down sockets [ 806.088215] blkdev_ioctl+0x5cb/0x1a80 [ 806.088230] ? blkpg_ioctl+0x9d0/0x9d0 [ 806.088247] ? get_pid_task+0xf4/0x190 [ 806.088262] ? mark_held_locks+0xf0/0xf0 [ 806.088274] ? proc_fail_nth_write+0x95/0x1d0 [ 806.088289] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 806.117957] ? __fdget_pos+0x26f/0x310 [ 806.121852] block_ioctl+0xe9/0x130 [ 806.125476] ? blkdev_fallocate+0x3f0/0x3f0 [ 806.129804] do_vfs_ioctl+0xcdb/0x12e0 [ 806.133698] ? lock_downgrade+0x720/0x720 [ 806.137851] ? check_preemption_disabled+0x41/0x280 [ 806.142974] ? ioctl_preallocate+0x200/0x200 [ 806.147390] ? __fget+0x356/0x510 [ 806.150850] ? do_dup2+0x450/0x450 [ 806.154390] ? vfs_write+0x393/0x540 [ 806.158103] ? fput+0x2b/0x190 [ 806.161297] ksys_ioctl+0x9b/0xc0 [ 806.164759] __x64_sys_ioctl+0x6f/0xb0 [ 806.168738] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 806.173316] do_syscall_64+0xf9/0x620 [ 806.177139] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 806.182322] RIP: 0033:0x7f03750e1089 [ 806.186026] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 806.204917] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 806.212620] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 806.219878] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 806.227144] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 executing program executing program [ 806.234406] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 806.241667] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 806.248945] CPU: 0 PID: 10516 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 806.250848] block nbd0: shutting down sockets [ 806.256914] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 806.256924] Call Trace: [ 806.273318] dump_stack+0x1fc/0x2ef [ 806.276931] should_fail.cold+0xa/0xf [ 806.280714] ? setup_fault_attr+0x200/0x200 [ 806.285014] ? lock_acquire+0x170/0x3c0 [ 806.288970] __should_failslab+0x115/0x180 [ 806.293189] should_failslab+0x5/0x10 [ 806.296967] kmem_cache_alloc+0x277/0x370 [ 806.301097] __d_alloc+0x2b/0xa10 [ 806.304527] ? __bpf_address_lookup+0x330/0x330 [ 806.309178] ? check_preemption_disabled+0x41/0x280 [ 806.314178] d_alloc+0x4a/0x230 [ 806.317437] d_alloc_parallel+0xeb/0x19e0 [ 806.321577] ? mark_held_locks+0xf0/0xf0 [ 806.325624] ? __d_lookup_rcu+0x6b0/0x6b0 [ 806.329756] ? mark_held_locks+0xf0/0xf0 [ 806.333797] ? __lockdep_init_map+0x100/0x5a0 [ 806.338323] ? __lockdep_init_map+0x100/0x5a0 [ 806.342799] __lookup_slow+0x18d/0x4a0 [ 806.346666] ? check_preemption_disabled+0x41/0x280 [ 806.351662] ? follow_dotdot_rcu+0x1040/0x1040 [ 806.356224] ? __d_lookup+0x411/0x710 [ 806.360009] ? d_lookup+0x18e/0x250 [ 806.363620] lookup_one_len+0x163/0x190 [ 806.367572] ? try_lookup_one_len+0x180/0x180 [ 806.372064] start_creating+0xc9/0x220 [ 806.375946] __debugfs_create_file+0x5e/0x480 [ 806.380431] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 806.385606] ? kvm_clock_get_cycles+0x14/0x30 [ 806.390081] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 806.394921] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 806.399830] ? init_srcu_struct_fields+0xca6/0x1190 [ 806.404824] ? srcu_reschedule+0x120/0x120 [ 806.409037] ? __raw_spin_lock_init+0x28/0x100 [ 806.413600] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 806.418336] ? nbd_clear_que+0x160/0x160 [ 806.422391] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 806.427401] ? workqueue_sysfs_register+0x391/0x3e0 [ 806.432401] ? blk_mq_init_queue+0xa0/0xa0 [ 806.436614] ? apparmor_sb_mount+0x970/0x970 [ 806.441007] nbd_start_device+0x1f2/0xd60 [ 806.445140] ? security_capable+0x8f/0xc0 [ 806.449276] nbd_ioctl+0x62c/0xbe0 [ 806.452797] ? _copy_from_user+0xd2/0x130 [ 806.456926] ? nbd_disconnect_and_put+0x190/0x190 [ 806.461751] ? __lock_acquire+0x6de/0x3ff0 [ 806.465967] ? nbd_disconnect_and_put+0x190/0x190 [ 806.470792] blkdev_ioctl+0x5cb/0x1a80 [ 806.474660] ? blkpg_ioctl+0x9d0/0x9d0 [ 806.478529] ? get_pid_task+0xf4/0x190 [ 806.482399] ? mark_held_locks+0xf0/0xf0 [ 806.486439] ? proc_fail_nth_write+0x95/0x1d0 [ 806.490922] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 806.495837] ? __fdget_pos+0x26f/0x310 [ 806.499709] block_ioctl+0xe9/0x130 [ 806.503314] ? blkdev_fallocate+0x3f0/0x3f0 [ 806.507616] do_vfs_ioctl+0xcdb/0x12e0 [ 806.511483] ? lock_downgrade+0x720/0x720 [ 806.515609] ? check_preemption_disabled+0x41/0x280 [ 806.520605] ? ioctl_preallocate+0x200/0x200 [ 806.524997] ? __fget+0x356/0x510 [ 806.528429] ? do_dup2+0x450/0x450 [ 806.531954] ? vfs_write+0x393/0x540 [ 806.535656] ? fput+0x2b/0x190 [ 806.538830] ksys_ioctl+0x9b/0xc0 [ 806.542263] __x64_sys_ioctl+0x6f/0xb0 [ 806.546132] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 806.550699] do_syscall_64+0xf9/0x620 [ 806.554487] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 806.559659] RIP: 0033:0x7f03750e1089 [ 806.563614] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 executing program [ 806.582576] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 806.590262] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 806.597508] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 806.604757] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 806.612012] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 806.619257] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 executing program [ 806.651465] block nbd3: shutting down sockets [ 806.659943] block nbd1: Device being setup by another task [ 806.660899] block nbd5: Device being setup by another task [ 806.669335] FAULT_INJECTION: forcing a failure. [ 806.669335] name failslab, interval 1, probability 0, space 0, times 0 [ 806.676404] block nbd5: Could not allocate knbd recv work queue. [ 806.683647] CPU: 0 PID: 10540 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 806.693612] block nbd5: shutting down sockets [ 806.696723] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 806.709724] block nbd2: Device being setup by another task [ 806.710552] Call Trace: [ 806.718742] dump_stack+0x1fc/0x2ef [ 806.722370] should_fail.cold+0xa/0xf [ 806.726159] ? setup_fault_attr+0x200/0x200 [ 806.730460] ? lock_acquire+0x170/0x3c0 [ 806.734416] __should_failslab+0x115/0x180 [ 806.738630] should_failslab+0x5/0x10 [ 806.742410] kmem_cache_alloc+0x277/0x370 [ 806.746535] skb_clone+0x151/0x3d0 [ 806.750058] netlink_broadcast_filtered+0x8e5/0xbc0 [ 806.755058] netlink_broadcast+0x35/0x40 [ 806.759108] kobject_uevent_env+0xa56/0x1480 [ 806.763499] ? nbd_size_update+0x28a/0x660 [ 806.767715] ? queue_work_on+0x11a/0x1f0 [ 806.771759] nbd_start_device+0x811/0xd60 [ 806.775891] nbd_ioctl+0x62c/0xbe0 [ 806.779412] ? _copy_from_user+0xd2/0x130 [ 806.783539] ? nbd_disconnect_and_put+0x190/0x190 [ 806.788368] ? __lock_acquire+0x6de/0x3ff0 [ 806.792584] ? nbd_disconnect_and_put+0x190/0x190 [ 806.797406] blkdev_ioctl+0x5cb/0x1a80 [ 806.801443] ? blkpg_ioctl+0x9d0/0x9d0 [ 806.805312] ? get_pid_task+0xf4/0x190 [ 806.809188] ? mark_held_locks+0xf0/0xf0 [ 806.813237] ? proc_fail_nth_write+0x95/0x1d0 [ 806.817712] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 806.822620] ? __fdget_pos+0x26f/0x310 [ 806.826490] block_ioctl+0xe9/0x130 [ 806.830098] ? blkdev_fallocate+0x3f0/0x3f0 [ 806.834401] do_vfs_ioctl+0xcdb/0x12e0 [ 806.838270] ? lock_downgrade+0x720/0x720 [ 806.842399] ? check_preemption_disabled+0x41/0x280 [ 806.847398] ? ioctl_preallocate+0x200/0x200 [ 806.851804] ? __fget+0x356/0x510 [ 806.855248] ? do_dup2+0x450/0x450 [ 806.858766] ? vfs_write+0x393/0x540 [ 806.862462] ? fput+0x2b/0x190 [ 806.865636] ksys_ioctl+0x9b/0xc0 [ 806.869088] __x64_sys_ioctl+0x6f/0xb0 [ 806.872967] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 806.877532] do_syscall_64+0xf9/0x620 [ 806.881313] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 806.886488] RIP: 0033:0x7f03750e1089 [ 806.890180] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 806.909058] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 806.916745] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 806.923993] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 806.931240] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 806.938486] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 806.945734] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 806.956496] FAULT_INJECTION: forcing a failure. [ 806.956496] name failslab, interval 1, probability 0, space 0, times 0 [ 806.959841] block nbd4: Device being setup by another task [ 806.968131] CPU: 0 PID: 10553 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 806.981251] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 806.983893] block nbd4: Could not allocate knbd recv work queue. [ 806.990597] Call Trace: [ 806.990616] dump_stack+0x1fc/0x2ef [ 806.990642] should_fail.cold+0xa/0xf executing program [ 806.990659] ? setup_fault_attr+0x200/0x200 [ 807.008542] block nbd4: shutting down sockets [ 807.011044] ? lock_acquire+0x170/0x3c0 [ 807.011064] __should_failslab+0x115/0x180 [ 807.011080] should_failslab+0x5/0x10 [ 807.011095] kmem_cache_alloc_node_trace+0x244/0x3b0 [ 807.032682] __kmalloc_node_track_caller+0x38/0x70 [ 807.037605] __alloc_skb+0xae/0x560 [ 807.041220] alloc_uevent_skb+0x7b/0x210 [ 807.045261] kobject_uevent_env+0xa90/0x1480 [ 807.049653] ? nbd_size_update+0x28a/0x660 [ 807.053867] ? queue_work_on+0x11a/0x1f0 [ 807.057909] nbd_start_device+0x811/0xd60 [ 807.062043] nbd_ioctl+0x62c/0xbe0 [ 807.065565] ? _copy_from_user+0xd2/0x130 [ 807.069693] ? nbd_disconnect_and_put+0x190/0x190 [ 807.074517] ? __lock_acquire+0x6de/0x3ff0 [ 807.078731] ? nbd_disconnect_and_put+0x190/0x190 [ 807.083558] blkdev_ioctl+0x5cb/0x1a80 [ 807.087427] ? blkpg_ioctl+0x9d0/0x9d0 [ 807.091297] ? get_pid_task+0xf4/0x190 [ 807.095163] ? mark_held_locks+0xf0/0xf0 [ 807.099203] ? proc_fail_nth_write+0x95/0x1d0 [ 807.103683] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 807.108606] ? __fdget_pos+0x26f/0x310 [ 807.112576] block_ioctl+0xe9/0x130 [ 807.116194] ? blkdev_fallocate+0x3f0/0x3f0 [ 807.120498] do_vfs_ioctl+0xcdb/0x12e0 [ 807.124372] ? lock_downgrade+0x720/0x720 [ 807.128504] ? check_preemption_disabled+0x41/0x280 [ 807.133507] ? ioctl_preallocate+0x200/0x200 [ 807.137898] ? __fget+0x356/0x510 [ 807.141332] ? do_dup2+0x450/0x450 [ 807.144855] ? vfs_write+0x393/0x540 [ 807.148549] ? fput+0x2b/0x190 [ 807.151724] ksys_ioctl+0x9b/0xc0 [ 807.155157] __x64_sys_ioctl+0x6f/0xb0 [ 807.159026] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 807.163587] do_syscall_64+0xf9/0x620 [ 807.167368] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 807.172535] RIP: 0033:0x7f03750e1089 [ 807.176316] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 807.195196] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 executing program [ 807.202881] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 807.210130] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 807.217381] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 807.224902] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 807.232150] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 807.241319] FAULT_INJECTION: forcing a failure. [ 807.241319] name failslab, interval 1, probability 0, space 0, times 0 [ 807.257711] CPU: 0 PID: 10533 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 807.265688] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 807.275042] Call Trace: [ 807.277615] dump_stack+0x1fc/0x2ef [ 807.281253] should_fail.cold+0xa/0xf [ 807.285044] ? setup_fault_attr+0x200/0x200 [ 807.289348] ? lock_acquire+0x170/0x3c0 [ 807.293318] __should_failslab+0x115/0x180 [ 807.297627] should_failslab+0x5/0x10 [ 807.301416] kmem_cache_alloc_trace+0x284/0x380 [ 807.306075] ? wait_for_completion_io+0x10/0x10 [ 807.310727] ? kobj_ns_initial+0x90/0x90 [ 807.314771] call_usermodehelper_setup+0x84/0x300 [ 807.319612] kobject_uevent_env+0xe83/0x1480 [ 807.324010] ? nbd_size_update+0x28a/0x660 [ 807.328234] ? queue_work_on+0x11a/0x1f0 [ 807.332285] nbd_start_device+0x811/0xd60 [ 807.336417] nbd_ioctl+0x62c/0xbe0 [ 807.339940] ? _copy_from_user+0xd2/0x130 [ 807.344086] ? nbd_disconnect_and_put+0x190/0x190 [ 807.348922] ? __lock_acquire+0x6de/0x3ff0 [ 807.353137] ? nbd_disconnect_and_put+0x190/0x190 [ 807.357961] blkdev_ioctl+0x5cb/0x1a80 [ 807.361832] ? blkpg_ioctl+0x9d0/0x9d0 [ 807.365698] ? get_pid_task+0xf4/0x190 [ 807.369572] ? mark_held_locks+0xf0/0xf0 [ 807.373620] ? proc_fail_nth_write+0x95/0x1d0 [ 807.378095] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 807.383034] ? __fdget_pos+0x26f/0x310 [ 807.386905] block_ioctl+0xe9/0x130 [ 807.390508] ? blkdev_fallocate+0x3f0/0x3f0 [ 807.394809] do_vfs_ioctl+0xcdb/0x12e0 [ 807.398676] ? lock_downgrade+0x720/0x720 [ 807.402804] ? check_preemption_disabled+0x41/0x280 [ 807.407797] ? ioctl_preallocate+0x200/0x200 [ 807.412185] ? __fget+0x356/0x510 [ 807.415618] ? do_dup2+0x450/0x450 [ 807.419141] ? vfs_write+0x393/0x540 [ 807.422837] ? fput+0x2b/0x190 [ 807.426014] ksys_ioctl+0x9b/0xc0 [ 807.429449] __x64_sys_ioctl+0x6f/0xb0 [ 807.434444] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 807.439008] do_syscall_64+0xf9/0x620 [ 807.442789] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 807.448043] RIP: 0033:0x7f03750e1089 [ 807.451742] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 807.470624] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 807.478312] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 807.485568] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 807.492817] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 807.500076] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc executing program [ 807.507329] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 807.514945] block nbd2: shutting down sockets executing program [ 807.549767] block nbd3: Device being setup by another task [ 807.555560] block nbd3: Could not allocate knbd recv work queue. [ 807.565376] block nbd3: shutting down sockets [ 807.570155] block nbd5: Device being setup by another task [ 807.576160] block nbd5: Could not allocate knbd recv work queue. [ 807.583205] block nbd4: Device being setup by another task [ 807.589435] block nbd4: Could not allocate knbd recv work queue. executing program executing program executing program executing program [ 807.596260] block nbd5: shutting down sockets [ 807.597368] block nbd4: shutting down sockets [ 807.626201] block nbd1: shutting down sockets [ 807.636720] block nbd0: shutting down sockets [ 807.670793] FAULT_INJECTION: forcing a failure. [ 807.670793] name failslab, interval 1, probability 0, space 0, times 0 [ 807.671861] FAULT_INJECTION: forcing a failure. [ 807.671861] name failslab, interval 1, probability 0, space 0, times 0 [ 807.682278] CPU: 1 PID: 10568 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 807.697383] FAULT_INJECTION: forcing a failure. [ 807.697383] name failslab, interval 1, probability 0, space 0, times 0 [ 807.701208] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 807.701213] Call Trace: [ 807.701234] dump_stack+0x1fc/0x2ef [ 807.701252] should_fail.cold+0xa/0xf [ 807.701268] ? setup_fault_attr+0x200/0x200 [ 807.701281] ? lock_acquire+0x170/0x3c0 [ 807.701300] __should_failslab+0x115/0x180 [ 807.744352] should_failslab+0x5/0x10 [ 807.748142] kmem_cache_alloc+0x277/0x370 [ 807.752284] __d_alloc+0x2b/0xa10 [ 807.755730] ? __bpf_address_lookup+0x330/0x330 [ 807.760389] ? check_preemption_disabled+0x41/0x280 [ 807.765394] d_alloc+0x4a/0x230 [ 807.768755] d_alloc_parallel+0xeb/0x19e0 [ 807.772902] ? mark_held_locks+0xf0/0xf0 [ 807.776959] ? __d_lookup_rcu+0x6b0/0x6b0 [ 807.781102] ? mark_held_locks+0xf0/0xf0 [ 807.785159] ? __lockdep_init_map+0x100/0x5a0 [ 807.789648] ? __lockdep_init_map+0x100/0x5a0 [ 807.794138] __lookup_slow+0x18d/0x4a0 [ 807.798015] ? check_preemption_disabled+0x41/0x280 [ 807.803033] ? follow_dotdot_rcu+0x1040/0x1040 [ 807.807618] ? __d_lookup+0x411/0x710 [ 807.811421] ? d_lookup+0x18e/0x250 [ 807.815052] lookup_one_len+0x163/0x190 [ 807.819028] ? try_lookup_one_len+0x180/0x180 [ 807.823531] start_creating+0xc9/0x220 [ 807.827419] __debugfs_create_file+0x5e/0x480 [ 807.831916] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 807.837101] ? kvm_clock_get_cycles+0x14/0x30 [ 807.841595] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 807.846430] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 807.851347] ? init_srcu_struct_fields+0xca6/0x1190 [ 807.856358] ? srcu_reschedule+0x120/0x120 [ 807.860582] ? __raw_spin_lock_init+0x28/0x100 [ 807.865160] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 807.869910] ? nbd_clear_que+0x160/0x160 [ 807.873965] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 807.878974] ? workqueue_sysfs_register+0x391/0x3e0 [ 807.883984] ? blk_mq_init_queue+0xa0/0xa0 [ 807.888213] ? apparmor_sb_mount+0x970/0x970 [ 807.892615] nbd_start_device+0x1f2/0xd60 [ 807.896751] ? security_capable+0x8f/0xc0 [ 807.900900] nbd_ioctl+0x62c/0xbe0 [ 807.904435] ? _copy_from_user+0xd2/0x130 [ 807.908573] ? nbd_disconnect_and_put+0x190/0x190 [ 807.913408] ? __lock_acquire+0x6de/0x3ff0 [ 807.917635] ? nbd_disconnect_and_put+0x190/0x190 [ 807.922467] blkdev_ioctl+0x5cb/0x1a80 [ 807.926438] ? blkpg_ioctl+0x9d0/0x9d0 [ 807.930320] ? get_pid_task+0xf4/0x190 [ 807.934200] ? mark_held_locks+0xf0/0xf0 [ 807.938250] ? proc_fail_nth_write+0x95/0x1d0 [ 807.942734] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 807.947651] ? __fdget_pos+0x26f/0x310 [ 807.951540] block_ioctl+0xe9/0x130 [ 807.955158] ? blkdev_fallocate+0x3f0/0x3f0 [ 807.959470] do_vfs_ioctl+0xcdb/0x12e0 [ 807.963350] ? lock_downgrade+0x720/0x720 [ 807.967486] ? check_preemption_disabled+0x41/0x280 [ 807.972493] ? ioctl_preallocate+0x200/0x200 [ 807.976896] ? __fget+0x356/0x510 [ 807.980343] ? do_dup2+0x450/0x450 [ 807.983869] ? vfs_write+0x393/0x540 [ 807.987572] ? fput+0x2b/0x190 [ 807.990764] ksys_ioctl+0x9b/0xc0 [ 807.994207] __x64_sys_ioctl+0x6f/0xb0 [ 807.998092] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 808.002673] do_syscall_64+0xf9/0x620 [ 808.006472] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 808.011655] RIP: 0033:0x7f03750e1089 [ 808.015358] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 808.034254] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 808.041950] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 808.049216] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 808.056472] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 808.063727] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 808.070983] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 808.078264] CPU: 0 PID: 10575 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 808.086237] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 808.088459] block nbd2: shutting down sockets [ 808.095584] Call Trace: [ 808.095604] dump_stack+0x1fc/0x2ef [ 808.095622] should_fail.cold+0xa/0xf [ 808.095638] ? setup_fault_attr+0x200/0x200 [ 808.095655] ? lock_acquire+0x170/0x3c0 [ 808.118350] __should_failslab+0x115/0x180 [ 808.122577] should_failslab+0x5/0x10 [ 808.126367] kmem_cache_alloc_trace+0x284/0x380 [ 808.131071] ? wait_for_completion_io+0x10/0x10 [ 808.135745] ? kobj_ns_initial+0x90/0x90 [ 808.139807] call_usermodehelper_setup+0x84/0x300 [ 808.144652] kobject_uevent_env+0xe83/0x1480 [ 808.149240] ? nbd_size_update+0x28a/0x660 [ 808.153470] ? queue_work_on+0x11a/0x1f0 [ 808.157522] nbd_start_device+0x811/0xd60 [ 808.161667] nbd_ioctl+0x62c/0xbe0 [ 808.165211] ? _copy_from_user+0xd2/0x130 [ 808.169348] ? nbd_disconnect_and_put+0x190/0x190 [ 808.174185] ? __lock_acquire+0x6de/0x3ff0 [ 808.178412] ? nbd_disconnect_and_put+0x190/0x190 [ 808.183249] blkdev_ioctl+0x5cb/0x1a80 [ 808.187134] ? blkpg_ioctl+0x9d0/0x9d0 [ 808.191009] ? get_pid_task+0xf4/0x190 [ 808.194890] ? mark_held_locks+0xf0/0xf0 [ 808.199118] ? proc_fail_nth_write+0x95/0x1d0 [ 808.203605] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 808.208619] ? __fdget_pos+0x26f/0x310 [ 808.212502] block_ioctl+0xe9/0x130 [ 808.216118] ? blkdev_fallocate+0x3f0/0x3f0 [ 808.220429] do_vfs_ioctl+0xcdb/0x12e0 [ 808.224306] ? lock_downgrade+0x720/0x720 [ 808.228442] ? check_preemption_disabled+0x41/0x280 [ 808.233455] ? ioctl_preallocate+0x200/0x200 [ 808.237858] ? __fget+0x356/0x510 [ 808.239877] block nbd4: Could not allocate knbd recv work queue. [ 808.241302] ? do_dup2+0x450/0x450 [ 808.241315] ? vfs_write+0x393/0x540 [ 808.241329] ? fput+0x2b/0x190 [ 808.241347] ksys_ioctl+0x9b/0xc0 [ 808.248685] block nbd4: shutting down sockets [ 808.250997] __x64_sys_ioctl+0x6f/0xb0 [ 808.251010] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 808.251023] do_syscall_64+0xf9/0x620 [ 808.251041] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 808.283357] RIP: 0033:0x7f03750e1089 [ 808.287064] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 808.304019] block nbd1: Could not allocate knbd recv work queue. [ 808.305960] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 808.305974] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 808.305981] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 808.305989] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 808.305995] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 808.306006] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 808.356115] CPU: 1 PID: 10572 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 808.360848] block nbd1: shutting down sockets executing program executing program [ 808.364083] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 808.377995] Call Trace: [ 808.380600] dump_stack+0x1fc/0x2ef [ 808.384239] should_fail.cold+0xa/0xf [ 808.388047] ? setup_fault_attr+0x200/0x200 [ 808.392369] ? lock_acquire+0x170/0x3c0 [ 808.396348] __should_failslab+0x115/0x180 [ 808.400586] should_failslab+0x5/0x10 [ 808.404387] kmem_cache_alloc_trace+0x284/0x380 [ 808.409054] ? wait_for_completion_io+0x10/0x10 [ 808.413724] ? kobj_ns_initial+0x90/0x90 [ 808.417788] call_usermodehelper_setup+0x84/0x300 executing program [ 808.422640] kobject_uevent_env+0xe83/0x1480 [ 808.427063] ? nbd_size_update+0x28a/0x660 [ 808.431302] ? queue_work_on+0x11a/0x1f0 [ 808.435371] nbd_start_device+0x811/0xd60 [ 808.438785] block nbd5: shutting down sockets [ 808.439527] nbd_ioctl+0x62c/0xbe0 [ 808.439543] ? _copy_from_user+0xd2/0x130 [ 808.439558] ? nbd_disconnect_and_put+0x190/0x190 [ 808.439577] ? __lock_acquire+0x6de/0x3ff0 [ 808.460775] ? nbd_disconnect_and_put+0x190/0x190 [ 808.465599] blkdev_ioctl+0x5cb/0x1a80 [ 808.469466] ? blkpg_ioctl+0x9d0/0x9d0 [ 808.473343] ? get_pid_task+0xf4/0x190 [ 808.477219] ? mark_held_locks+0xf0/0xf0 [ 808.481265] ? proc_fail_nth_write+0x95/0x1d0 [ 808.485753] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 808.490670] ? __fdget_pos+0x26f/0x310 [ 808.494544] block_ioctl+0xe9/0x130 [ 808.498151] ? blkdev_fallocate+0x3f0/0x3f0 [ 808.502454] do_vfs_ioctl+0xcdb/0x12e0 [ 808.506323] ? lock_downgrade+0x720/0x720 [ 808.510457] ? check_preemption_disabled+0x41/0x280 [ 808.515452] ? ioctl_preallocate+0x200/0x200 [ 808.519843] ? __fget+0x356/0x510 [ 808.523279] ? do_dup2+0x450/0x450 [ 808.526798] ? vfs_write+0x393/0x540 [ 808.530494] ? fput+0x2b/0x190 [ 808.533668] ksys_ioctl+0x9b/0xc0 [ 808.537119] __x64_sys_ioctl+0x6f/0xb0 [ 808.540998] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 808.545576] do_syscall_64+0xf9/0x620 [ 808.549370] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 808.554540] RIP: 0033:0x7f03750e1089 [ 808.558238] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 808.577127] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 808.584831] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 808.592092] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 808.599341] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 808.606605] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 808.613852] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 executing program executing program executing program [ 808.622328] block nbd3: shutting down sockets [ 808.640172] block nbd0: Device being setup by another task [ 808.647339] block nbd0: Could not allocate knbd recv work queue. [ 808.655333] block nbd0: shutting down sockets [ 808.661773] block nbd1: Device being setup by another task [ 808.665271] block nbd4: Device being setup by another task [ 808.673779] block nbd5: Device being setup by another task [ 808.683083] block nbd1: shutting down sockets [ 808.687796] FAULT_INJECTION: forcing a failure. [ 808.687796] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 808.699787] CPU: 1 PID: 10603 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 808.707752] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 808.717132] Call Trace: [ 808.719707] dump_stack+0x1fc/0x2ef [ 808.723319] should_fail.cold+0xa/0xf [ 808.727105] ? setup_fault_attr+0x200/0x200 [ 808.731412] ? mark_held_locks+0xf0/0xf0 [ 808.735459] __alloc_pages_nodemask+0x239/0x2890 [ 808.740209] ? unmap_page_range+0xfd4/0x2c50 [ 808.744606] ? unmap_single_vma+0x198/0x300 [ 808.748922] ? __lock_acquire+0x6de/0x3ff0 [ 808.753168] ? gfp_pfmemalloc_allowed+0x150/0x150 [ 808.757998] ? mark_held_locks+0xf0/0xf0 [ 808.762045] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 808.767149] ? zap_huge_pmd+0x712/0xf30 [ 808.771121] ? unmap_page_range+0x1616/0x2c50 [ 808.775604] ? check_preemption_disabled+0x41/0x280 [ 808.780609] alloc_pages_current+0x193/0x2a0 [ 808.785005] __get_free_pages+0x8/0x40 [ 808.788876] __tlb_remove_page_size+0x2a2/0x470 [ 808.793528] unmap_page_range+0x14e7/0x2c50 [ 808.797838] ? lock_downgrade+0x720/0x720 [ 808.801971] ? vm_normal_page_pmd+0x4c0/0x4c0 [ 808.806449] ? _raw_spin_unlock_irqrestore+0x79/0xe0 [ 808.811548] unmap_single_vma+0x198/0x300 [ 808.815692] unmap_vmas+0xa9/0x180 [ 808.819227] exit_mmap+0x2b9/0x530 [ 808.822774] ? __ia32_sys_remap_file_pages+0x150/0x150 [ 808.828048] ? __khugepaged_exit+0x2a6/0x3e0 [ 808.832440] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 808.837444] ? kmem_cache_free+0x226/0x260 [ 808.841679] ? __khugepaged_exit+0x2c7/0x3e0 [ 808.846084] mmput+0x14e/0x4a0 [ 808.849270] do_exit+0xaec/0x2be0 [ 808.852718] ? mm_update_next_owner+0x650/0x650 [ 808.857377] ? get_signal+0x388/0x1f70 [ 808.861247] ? lock_downgrade+0x720/0x720 [ 808.865380] ? lock_acquire+0x170/0x3c0 [ 808.869341] do_group_exit+0x125/0x310 [ 808.873222] get_signal+0x3f2/0x1f70 [ 808.876918] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 808.881844] do_signal+0x8f/0x1670 [ 808.885363] ? block_ioctl+0xe9/0x130 [ 808.889142] ? blkdev_fallocate+0x3f0/0x3f0 [ 808.893464] ? do_vfs_ioctl+0x110/0x12e0 [ 808.897506] ? setup_sigcontext+0x820/0x820 [ 808.901910] ? ioctl_preallocate+0x200/0x200 [ 808.906315] ? __fget+0x356/0x510 [ 808.909753] ? do_dup2+0x450/0x450 [ 808.913277] ? vfs_write+0x393/0x540 [ 808.916970] ? fput+0x2b/0x190 [ 808.920147] ? exit_to_usermode_loop+0x36/0x2a0 [ 808.924804] exit_to_usermode_loop+0x204/0x2a0 [ 808.929378] do_syscall_64+0x538/0x620 [ 808.933260] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 808.938436] RIP: 0033:0x7f03750e1089 [ 808.942135] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 808.961018] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 808.968708] RAX: fffffffffffffe00 RBX: 00007f037515e4e0 RCX: 00007f03750e1089 executing program [ 808.975956] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 808.983206] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 808.990457] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 808.998141] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 809.009390] FAULT_INJECTION: forcing a failure. [ 809.009390] name failslab, interval 1, probability 0, space 0, times 0 [ 809.023052] CPU: 1 PID: 10621 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 809.030077] FAULT_INJECTION: forcing a failure. [ 809.030077] name failslab, interval 1, probability 0, space 0, times 0 [ 809.031026] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 809.031031] Call Trace: [ 809.031051] dump_stack+0x1fc/0x2ef [ 809.031070] should_fail.cold+0xa/0xf [ 809.031086] ? setup_fault_attr+0x200/0x200 [ 809.031105] ? lock_acquire+0x170/0x3c0 [ 809.069898] __should_failslab+0x115/0x180 [ 809.074133] should_failslab+0x5/0x10 [ 809.077928] kmem_cache_alloc_trace+0x284/0x380 [ 809.082595] ? wait_for_completion_io+0x10/0x10 [ 809.087255] ? kobj_ns_initial+0x90/0x90 [ 809.091320] call_usermodehelper_setup+0x84/0x300 [ 809.096181] kobject_uevent_env+0xe83/0x1480 [ 809.100589] ? nbd_size_update+0x28a/0x660 [ 809.104815] ? queue_work_on+0x11a/0x1f0 [ 809.108867] nbd_start_device+0x811/0xd60 [ 809.113012] nbd_ioctl+0x62c/0xbe0 [ 809.116549] ? _copy_from_user+0xd2/0x130 [ 809.120689] ? nbd_disconnect_and_put+0x190/0x190 [ 809.125535] ? __lock_acquire+0x6de/0x3ff0 [ 809.129763] ? nbd_disconnect_and_put+0x190/0x190 [ 809.134595] blkdev_ioctl+0x5cb/0x1a80 [ 809.138471] ? blkpg_ioctl+0x9d0/0x9d0 [ 809.142348] ? get_pid_task+0xf4/0x190 [ 809.146226] ? mark_held_locks+0xf0/0xf0 [ 809.150275] ? proc_fail_nth_write+0x95/0x1d0 [ 809.154760] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 809.159678] ? __fdget_pos+0x26f/0x310 [ 809.163563] block_ioctl+0xe9/0x130 [ 809.167178] ? blkdev_fallocate+0x3f0/0x3f0 [ 809.171494] do_vfs_ioctl+0xcdb/0x12e0 [ 809.175377] ? lock_downgrade+0x720/0x720 [ 809.179518] ? check_preemption_disabled+0x41/0x280 [ 809.184526] ? ioctl_preallocate+0x200/0x200 [ 809.188936] ? __fget+0x356/0x510 [ 809.192378] ? do_dup2+0x450/0x450 [ 809.195915] ? vfs_write+0x393/0x540 [ 809.199621] ? fput+0x2b/0x190 [ 809.202901] ksys_ioctl+0x9b/0xc0 [ 809.206356] __x64_sys_ioctl+0x6f/0xb0 [ 809.210247] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 809.214829] do_syscall_64+0xf9/0x620 [ 809.218635] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 809.223819] RIP: 0033:0x7f03750e1089 [ 809.227533] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 809.246428] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 809.254130] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 809.261385] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 809.268639] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 809.275896] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 809.283278] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 809.290566] CPU: 0 PID: 10620 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 809.298538] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 809.307896] Call Trace: [ 809.310486] dump_stack+0x1fc/0x2ef [ 809.314100] should_fail.cold+0xa/0xf [ 809.317887] ? setup_fault_attr+0x200/0x200 [ 809.322198] ? lock_acquire+0x170/0x3c0 [ 809.326162] __should_failslab+0x115/0x180 [ 809.330389] should_failslab+0x5/0x10 [ 809.334175] kmem_cache_alloc_trace+0x284/0x380 [ 809.338826] ? wait_for_completion_io+0x10/0x10 [ 809.343495] ? kobj_ns_initial+0x90/0x90 [ 809.347547] call_usermodehelper_setup+0x84/0x300 [ 809.352388] kobject_uevent_env+0xe83/0x1480 [ 809.356789] ? nbd_size_update+0x28a/0x660 [ 809.361007] ? queue_work_on+0x11a/0x1f0 [ 809.365052] nbd_start_device+0x811/0xd60 [ 809.369190] nbd_ioctl+0x62c/0xbe0 [ 809.372711] ? _copy_from_user+0xd2/0x130 [ 809.376841] ? nbd_disconnect_and_put+0x190/0x190 [ 809.381670] ? __lock_acquire+0x6de/0x3ff0 [ 809.385903] ? nbd_disconnect_and_put+0x190/0x190 [ 809.390730] blkdev_ioctl+0x5cb/0x1a80 [ 809.394599] ? blkpg_ioctl+0x9d0/0x9d0 [ 809.398466] ? get_pid_task+0xf4/0x190 [ 809.402335] ? mark_held_locks+0xf0/0xf0 [ 809.406378] ? proc_fail_nth_write+0x95/0x1d0 [ 809.409841] block nbd2: shutting down sockets [ 809.410865] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 809.410886] ? __fdget_pos+0x26f/0x310 [ 809.424158] block_ioctl+0xe9/0x130 [ 809.427779] ? blkdev_fallocate+0x3f0/0x3f0 [ 809.432097] do_vfs_ioctl+0xcdb/0x12e0 [ 809.435974] ? lock_downgrade+0x720/0x720 [ 809.440102] ? check_preemption_disabled+0x41/0x280 [ 809.445096] ? ioctl_preallocate+0x200/0x200 [ 809.449501] ? __fget+0x356/0x510 [ 809.452948] ? do_dup2+0x450/0x450 [ 809.456468] ? vfs_write+0x393/0x540 [ 809.460162] ? fput+0x2b/0x190 [ 809.463340] ksys_ioctl+0x9b/0xc0 [ 809.466784] __x64_sys_ioctl+0x6f/0xb0 [ 809.470654] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 809.475214] do_syscall_64+0xf9/0x620 [ 809.479003] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 809.484180] RIP: 0033:0x7f03750e1089 [ 809.487883] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 809.506774] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 809.514459] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 809.521706] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 809.528956] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 809.536205] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 809.543453] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 809.554882] FAULT_INJECTION: forcing a failure. [ 809.554882] name failslab, interval 1, probability 0, space 0, times 0 [ 809.559927] block nbd0: Could not allocate knbd recv work queue. executing program executing program executing program [ 809.566146] CPU: 0 PID: 10606 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 809.576936] block nbd0: shutting down sockets [ 809.580180] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 809.580186] Call Trace: [ 809.580205] dump_stack+0x1fc/0x2ef [ 809.580225] should_fail.cold+0xa/0xf [ 809.580241] ? setup_fault_attr+0x200/0x200 [ 809.580255] ? lock_acquire+0x170/0x3c0 [ 809.580274] __should_failslab+0x115/0x180 [ 809.580289] should_failslab+0x5/0x10 [ 809.580302] __kmalloc_track_caller+0x2a6/0x3c0 [ 809.580316] ? kstrdup_const+0x53/0x80 [ 809.580331] kstrdup+0x36/0x70 [ 809.580346] kstrdup_const+0x53/0x80 [ 809.580361] __kernfs_new_node+0x9b/0x680 [ 809.580372] ? kfree+0xcc/0x210 [ 809.580387] ? kobject_add+0x10d/0x1c0 [ 809.580401] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 809.580415] ? nbd_start_device+0x1f2/0xd60 [ 809.580427] ? nbd_ioctl+0x62c/0xbe0 [ 809.580439] ? blkdev_ioctl+0x5cb/0x1a80 [ 809.580451] ? do_vfs_ioctl+0xcdb/0x12e0 [ 809.580462] ? __x64_sys_ioctl+0x6f/0xb0 [ 809.580474] ? do_syscall_64+0xf9/0x620 [ 809.580486] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 809.580502] ? debug_check_no_obj_freed+0x201/0x490 [ 809.603866] block nbd3: shutting down sockets [ 809.604284] kernfs_create_dir_ns+0x9e/0x230 [ 809.604302] sysfs_create_dir_ns+0x127/0x280 [ 809.700086] ? sysfs_create_mount_point+0xb0/0xb0 [ 809.704922] ? mark_held_locks+0xa6/0xf0 [ 809.708970] ? kfree+0x110/0x210 [ 809.712316] ? kfree_const+0x51/0x60 [ 809.716012] kobject_add_internal+0x2a5/0x9c0 [ 809.720499] kobject_add+0x150/0x1c0 [ 809.724213] ? kset_create_and_add+0x1a0/0x1a0 [ 809.728790] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 809.733444] ? lock_downgrade+0x720/0x720 [ 809.737585] ? kernfs_put.part.0+0x225/0x590 [ 809.741997] blk_mq_register_hctx+0x23c/0x2c0 [ 809.746496] blk_mq_sysfs_register+0x143/0x1c0 [ 809.751064] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 809.756065] ? workqueue_sysfs_register+0x391/0x3e0 [ 809.761086] ? blk_mq_init_queue+0xa0/0xa0 [ 809.765317] nbd_start_device+0x1f2/0xd60 [ 809.769467] ? security_capable+0x8f/0xc0 [ 809.773606] nbd_ioctl+0x62c/0xbe0 [ 809.777138] ? _copy_from_user+0xd2/0x130 [ 809.781269] ? nbd_disconnect_and_put+0x190/0x190 [ 809.786097] ? __lock_acquire+0x6de/0x3ff0 [ 809.790313] ? nbd_disconnect_and_put+0x190/0x190 [ 809.795165] blkdev_ioctl+0x5cb/0x1a80 [ 809.799043] ? blkpg_ioctl+0x9d0/0x9d0 [ 809.802923] ? get_pid_task+0xf4/0x190 [ 809.806797] ? mark_held_locks+0xf0/0xf0 [ 809.810845] ? proc_fail_nth_write+0x95/0x1d0 [ 809.815318] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 809.820229] ? __fdget_pos+0x26f/0x310 [ 809.824118] block_ioctl+0xe9/0x130 [ 809.827731] ? blkdev_fallocate+0x3f0/0x3f0 [ 809.832044] do_vfs_ioctl+0xcdb/0x12e0 [ 809.835919] ? lock_downgrade+0x720/0x720 [ 809.840048] ? check_preemption_disabled+0x41/0x280 [ 809.845043] ? ioctl_preallocate+0x200/0x200 [ 809.849432] ? __fget+0x356/0x510 [ 809.852881] ? do_dup2+0x450/0x450 [ 809.856417] ? vfs_write+0x393/0x540 [ 809.860123] ? fput+0x2b/0x190 [ 809.863298] ksys_ioctl+0x9b/0xc0 [ 809.866734] __x64_sys_ioctl+0x6f/0xb0 [ 809.870602] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 809.875175] do_syscall_64+0xf9/0x620 [ 809.878960] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 809.884139] RIP: 0033:0x7f03750e1089 [ 809.887840] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 809.906735] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 809.914421] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 809.921671] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 809.928923] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 809.936261] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 809.943519] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 809.953441] FAULT_INJECTION: forcing a failure. [ 809.953441] name failslab, interval 1, probability 0, space 0, times 0 [ 809.953504] kobject_add_internal failed for cpu1 (error: -12 parent: 0) [ 809.978088] block nbd5: shutting down sockets [ 809.980058] block nbd1: Device being setup by another task [ 809.988755] CPU: 0 PID: 10605 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 809.991403] block nbd1: Could not allocate knbd recv work queue. [ 809.996722] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 809.996727] Call Trace: [ 809.996747] dump_stack+0x1fc/0x2ef [ 809.996767] should_fail.cold+0xa/0xf [ 810.017023] block nbd1: shutting down sockets [ 810.018413] ? setup_fault_attr+0x200/0x200 executing program executing program [ 810.018430] ? lock_acquire+0x170/0x3c0 [ 810.018450] __should_failslab+0x115/0x180 [ 810.018468] should_failslab+0x5/0x10 [ 810.042989] __kmalloc_track_caller+0x2a6/0x3c0 [ 810.047668] ? kstrdup_const+0x53/0x80 [ 810.051560] kstrdup+0x36/0x70 [ 810.054736] kstrdup_const+0x53/0x80 [ 810.058432] __kernfs_new_node+0x9b/0x680 [ 810.062565] ? kfree+0xcc/0x210 [ 810.065831] ? kobject_add+0x10d/0x1c0 [ 810.069703] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 810.074446] ? nbd_start_device+0x1f2/0xd60 [ 810.078756] ? nbd_ioctl+0x62c/0xbe0 [ 810.082458] ? blkdev_ioctl+0x5cb/0x1a80 [ 810.086505] ? do_vfs_ioctl+0xcdb/0x12e0 [ 810.090551] ? __x64_sys_ioctl+0x6f/0xb0 [ 810.094587] ? do_syscall_64+0xf9/0x620 [ 810.098541] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 810.103906] ? debug_check_no_obj_freed+0x201/0x490 [ 810.108946] kernfs_create_dir_ns+0x9e/0x230 [ 810.113354] sysfs_create_dir_ns+0x127/0x280 [ 810.117757] ? sysfs_create_mount_point+0xb0/0xb0 [ 810.122593] ? mark_held_locks+0xa6/0xf0 [ 810.126638] ? kfree+0x110/0x210 [ 810.129989] ? kfree_const+0x51/0x60 [ 810.133691] kobject_add_internal+0x2a5/0x9c0 [ 810.138172] kobject_add+0x150/0x1c0 [ 810.141867] ? kset_create_and_add+0x1a0/0x1a0 [ 810.146441] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 810.151112] ? lock_downgrade+0x720/0x720 [ 810.155263] ? kernfs_put.part.0+0x225/0x590 [ 810.159673] blk_mq_register_hctx+0x23c/0x2c0 [ 810.164152] blk_mq_sysfs_register+0x143/0x1c0 [ 810.168723] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 810.173720] ? workqueue_sysfs_register+0x391/0x3e0 [ 810.178737] ? blk_mq_init_queue+0xa0/0xa0 [ 810.182966] nbd_start_device+0x1f2/0xd60 [ 810.187096] ? security_capable+0x8f/0xc0 [ 810.191226] nbd_ioctl+0x62c/0xbe0 [ 810.194747] ? _copy_from_user+0xd2/0x130 [ 810.198887] ? nbd_disconnect_and_put+0x190/0x190 [ 810.203717] ? __lock_acquire+0x6de/0x3ff0 [ 810.207949] ? nbd_disconnect_and_put+0x190/0x190 [ 810.212782] blkdev_ioctl+0x5cb/0x1a80 [ 810.216654] ? blkpg_ioctl+0x9d0/0x9d0 [ 810.220523] ? get_pid_task+0xf4/0x190 [ 810.224391] ? mark_held_locks+0xf0/0xf0 [ 810.228430] ? proc_fail_nth_write+0x95/0x1d0 [ 810.232924] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 810.237843] ? __fdget_pos+0x26f/0x310 [ 810.241716] block_ioctl+0xe9/0x130 [ 810.245325] ? blkdev_fallocate+0x3f0/0x3f0 [ 810.249626] do_vfs_ioctl+0xcdb/0x12e0 [ 810.253493] ? lock_downgrade+0x720/0x720 [ 810.257628] ? check_preemption_disabled+0x41/0x280 [ 810.262631] ? ioctl_preallocate+0x200/0x200 [ 810.267021] ? __fget+0x356/0x510 [ 810.270455] ? do_dup2+0x450/0x450 [ 810.273974] ? vfs_write+0x393/0x540 [ 810.277679] ? fput+0x2b/0x190 [ 810.280865] ksys_ioctl+0x9b/0xc0 [ 810.284311] __x64_sys_ioctl+0x6f/0xb0 [ 810.288250] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 810.292826] do_syscall_64+0xf9/0x620 [ 810.296623] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 810.301803] RIP: 0033:0x7f03750e1089 [ 810.305505] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 810.324408] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 810.332111] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 810.339376] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 810.346631] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 810.353882] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 810.361134] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 [ 810.369280] kobject_add_internal failed for cpu1 (error: -12 parent: 0) executing program [ 810.378845] block nbd4: shutting down sockets [ 810.399571] block nbd2: Device being setup by another task [ 810.401784] block nbd0: Device being setup by another task [ 810.405312] block nbd3: Device being setup by another task [ 810.411093] block nbd0: Could not allocate knbd recv work queue. [ 810.418918] block nbd2: Could not allocate knbd recv work queue. executing program executing program executing program [ 810.424372] block nbd0: shutting down sockets [ 810.430596] block nbd3: Could not allocate knbd recv work queue. [ 810.441168] block nbd2: shutting down sockets [ 810.442511] block nbd3: shutting down sockets [ 810.459682] block nbd1: Device being setup by another task [ 810.463693] block nbd5: Device being setup by another task [ 810.465955] block nbd1: Could not allocate knbd recv work queue. [ 810.474130] block nbd5: Could not allocate knbd recv work queue. executing program executing program [ 810.479184] block nbd1: shutting down sockets [ 810.491077] block nbd5: shutting down sockets [ 810.531197] FAULT_INJECTION: forcing a failure. [ 810.531197] name failslab, interval 1, probability 0, space 0, times 0 [ 810.531640] FAULT_INJECTION: forcing a failure. [ 810.531640] name failslab, interval 1, probability 0, space 0, times 0 [ 810.546250] FAULT_INJECTION: forcing a failure. [ 810.546250] name failslab, interval 1, probability 0, space 0, times 0 [ 810.554114] CPU: 1 PID: 10665 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 810.572838] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 810.582182] Call Trace: [ 810.584765] dump_stack+0x1fc/0x2ef [ 810.588401] should_fail.cold+0xa/0xf [ 810.592196] ? setup_fault_attr+0x200/0x200 [ 810.596509] ? lock_acquire+0x170/0x3c0 [ 810.600477] __should_failslab+0x115/0x180 [ 810.604702] should_failslab+0x5/0x10 [ 810.608493] kmem_cache_alloc_trace+0x284/0x380 [ 810.613149] ? wait_for_completion_io+0x10/0x10 [ 810.617809] ? kobj_ns_initial+0x90/0x90 [ 810.621859] call_usermodehelper_setup+0x84/0x300 [ 810.626691] kobject_uevent_env+0xe83/0x1480 [ 810.631093] ? nbd_size_update+0x28a/0x660 [ 810.635315] ? queue_work_on+0x11a/0x1f0 [ 810.639366] nbd_start_device+0x811/0xd60 [ 810.643509] nbd_ioctl+0x62c/0xbe0 [ 810.647038] ? _copy_from_user+0xd2/0x130 [ 810.651175] ? nbd_disconnect_and_put+0x190/0x190 [ 810.656013] ? __lock_acquire+0x6de/0x3ff0 [ 810.660238] ? nbd_disconnect_and_put+0x190/0x190 [ 810.665072] blkdev_ioctl+0x5cb/0x1a80 [ 810.668948] ? blkpg_ioctl+0x9d0/0x9d0 [ 810.672827] ? get_pid_task+0xf4/0x190 [ 810.676707] ? mark_held_locks+0xf0/0xf0 [ 810.680757] ? proc_fail_nth_write+0x95/0x1d0 [ 810.685240] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 810.690161] ? __fdget_pos+0x26f/0x310 [ 810.694045] block_ioctl+0xe9/0x130 [ 810.697656] ? blkdev_fallocate+0x3f0/0x3f0 [ 810.701968] do_vfs_ioctl+0xcdb/0x12e0 [ 810.705848] ? lock_downgrade+0x720/0x720 [ 810.709989] ? check_preemption_disabled+0x41/0x280 [ 810.714995] ? ioctl_preallocate+0x200/0x200 [ 810.719395] ? __fget+0x356/0x510 [ 810.722843] ? do_dup2+0x450/0x450 [ 810.726372] ? vfs_write+0x393/0x540 [ 810.730079] ? fput+0x2b/0x190 [ 810.733265] ksys_ioctl+0x9b/0xc0 [ 810.736710] __x64_sys_ioctl+0x6f/0xb0 [ 810.740590] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 810.745163] do_syscall_64+0xf9/0x620 [ 810.748959] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 810.754144] RIP: 0033:0x7f03750e1089 [ 810.757851] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 810.776742] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 810.784439] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 810.791711] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 810.798971] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 810.806230] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 810.813485] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 810.820766] CPU: 0 PID: 10658 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 810.828738] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 810.838080] Call Trace: [ 810.840667] dump_stack+0x1fc/0x2ef [ 810.844294] should_fail.cold+0xa/0xf [ 810.848091] ? setup_fault_attr+0x200/0x200 [ 810.852405] ? lock_acquire+0x170/0x3c0 [ 810.856373] __should_failslab+0x115/0x180 [ 810.860603] should_failslab+0x5/0x10 [ 810.864395] kmem_cache_alloc+0x277/0x370 [ 810.868542] __d_alloc+0x2b/0xa10 [ 810.871996] ? __bpf_address_lookup+0x330/0x330 [ 810.876662] ? check_preemption_disabled+0x41/0x280 [ 810.881670] d_alloc+0x4a/0x230 [ 810.884945] d_alloc_parallel+0xeb/0x19e0 [ 810.889092] ? mark_held_locks+0xf0/0xf0 [ 810.893150] ? __d_lookup_rcu+0x6b0/0x6b0 [ 810.897293] ? mark_held_locks+0xf0/0xf0 [ 810.901344] ? __lockdep_init_map+0x100/0x5a0 [ 810.905836] ? __lockdep_init_map+0x100/0x5a0 [ 810.910333] __lookup_slow+0x18d/0x4a0 [ 810.914216] ? check_preemption_disabled+0x41/0x280 [ 810.919223] ? follow_dotdot_rcu+0x1040/0x1040 [ 810.923801] ? __d_lookup+0x411/0x710 [ 810.927604] ? d_lookup+0x18e/0x250 executing program [ 810.931237] lookup_one_len+0x163/0x190 [ 810.932456] block nbd3: shutting down sockets [ 810.935209] ? try_lookup_one_len+0x180/0x180 [ 810.935231] start_creating+0xc9/0x220 [ 810.935245] __debugfs_create_file+0x5e/0x480 [ 810.935265] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 810.935278] ? kvm_clock_get_cycles+0x14/0x30 [ 810.935296] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 810.967082] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 810.972007] ? init_srcu_struct_fields+0xca6/0x1190 [ 810.977027] ? srcu_reschedule+0x120/0x120 [ 810.981258] ? __raw_spin_lock_init+0x28/0x100 [ 810.985839] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 810.990602] ? nbd_clear_que+0x160/0x160 [ 810.994666] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 810.999676] ? workqueue_sysfs_register+0x391/0x3e0 [ 811.004688] ? blk_mq_init_queue+0xa0/0xa0 [ 811.008916] ? apparmor_sb_mount+0x970/0x970 [ 811.013321] nbd_start_device+0x1f2/0xd60 [ 811.017465] ? security_capable+0x8f/0xc0 [ 811.021607] nbd_ioctl+0x62c/0xbe0 [ 811.025143] ? _copy_from_user+0xd2/0x130 [ 811.029284] ? nbd_disconnect_and_put+0x190/0x190 [ 811.034125] ? __lock_acquire+0x6de/0x3ff0 [ 811.038364] ? nbd_disconnect_and_put+0x190/0x190 [ 811.043200] blkdev_ioctl+0x5cb/0x1a80 [ 811.047077] ? blkpg_ioctl+0x9d0/0x9d0 [ 811.050958] ? get_pid_task+0xf4/0x190 [ 811.054840] ? mark_held_locks+0xf0/0xf0 [ 811.058893] ? proc_fail_nth_write+0x95/0x1d0 [ 811.063377] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 811.068298] ? __fdget_pos+0x26f/0x310 [ 811.072186] block_ioctl+0xe9/0x130 [ 811.075893] ? blkdev_fallocate+0x3f0/0x3f0 [ 811.080207] do_vfs_ioctl+0xcdb/0x12e0 [ 811.084090] ? lock_downgrade+0x720/0x720 [ 811.088235] ? check_preemption_disabled+0x41/0x280 [ 811.093245] ? ioctl_preallocate+0x200/0x200 [ 811.097645] ? __fget+0x356/0x510 [ 811.101094] ? do_dup2+0x450/0x450 [ 811.104625] ? vfs_write+0x393/0x540 [ 811.108336] ? fput+0x2b/0x190 [ 811.111526] ksys_ioctl+0x9b/0xc0 [ 811.114977] __x64_sys_ioctl+0x6f/0xb0 [ 811.118861] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 811.123443] do_syscall_64+0xf9/0x620 [ 811.127243] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 811.132420] RIP: 0033:0x7f03750e1089 [ 811.136133] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 811.155025] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 811.162729] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 811.169998] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 811.177253] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 811.184508] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 811.191768] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 811.199044] CPU: 1 PID: 10667 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 811.207022] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 811.210665] block nbd1: shutting down sockets [ 811.216374] Call Trace: [ 811.223432] dump_stack+0x1fc/0x2ef [ 811.227069] should_fail.cold+0xa/0xf [ 811.230875] ? setup_fault_attr+0x200/0x200 [ 811.235198] ? lock_acquire+0x170/0x3c0 [ 811.239186] __should_failslab+0x115/0x180 [ 811.243435] should_failslab+0x5/0x10 [ 811.247235] kmem_cache_alloc+0x277/0x370 [ 811.251383] skb_clone+0x151/0x3d0 [ 811.254928] netlink_broadcast_filtered+0x8e5/0xbc0 [ 811.259958] netlink_broadcast+0x35/0x40 [ 811.264026] kobject_uevent_env+0xa56/0x1480 [ 811.268446] ? nbd_size_update+0x28a/0x660 [ 811.272678] ? queue_work_on+0x11a/0x1f0 [ 811.276731] nbd_start_device+0x811/0xd60 [ 811.280874] nbd_ioctl+0x62c/0xbe0 [ 811.284404] ? _copy_from_user+0xd2/0x130 [ 811.288538] ? nbd_disconnect_and_put+0x190/0x190 [ 811.293370] ? __lock_acquire+0x6de/0x3ff0 [ 811.297589] ? nbd_disconnect_and_put+0x190/0x190 [ 811.302420] blkdev_ioctl+0x5cb/0x1a80 [ 811.306293] ? blkpg_ioctl+0x9d0/0x9d0 [ 811.310160] ? get_pid_task+0xf4/0x190 [ 811.314030] ? mark_held_locks+0xf0/0xf0 [ 811.318071] ? proc_fail_nth_write+0x95/0x1d0 [ 811.322548] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 811.327567] ? __fdget_pos+0x26f/0x310 [ 811.331454] block_ioctl+0xe9/0x130 [ 811.335068] ? blkdev_fallocate+0x3f0/0x3f0 [ 811.339384] do_vfs_ioctl+0xcdb/0x12e0 [ 811.343266] ? lock_downgrade+0x720/0x720 [ 811.347403] ? check_preemption_disabled+0x41/0x280 [ 811.352405] ? ioctl_preallocate+0x200/0x200 [ 811.356796] ? __fget+0x356/0x510 [ 811.360264] ? do_dup2+0x450/0x450 [ 811.363788] ? vfs_write+0x393/0x540 [ 811.367485] ? fput+0x2b/0x190 [ 811.370661] ksys_ioctl+0x9b/0xc0 [ 811.374099] __x64_sys_ioctl+0x6f/0xb0 [ 811.377968] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 811.382530] do_syscall_64+0xf9/0x620 [ 811.386315] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 811.391486] RIP: 0033:0x7f03750e1089 [ 811.395182] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 811.414156] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 811.421847] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 executing program [ 811.429094] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 811.436342] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 811.443594] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 811.450841] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 811.460040] block nbd5: Could not allocate knbd recv work queue. [ 811.466780] FAULT_INJECTION: forcing a failure. [ 811.466780] name failslab, interval 1, probability 0, space 0, times 0 [ 811.468564] block nbd4: shutting down sockets [ 811.486557] block nbd0: shutting down sockets [ 811.493782] block nbd5: shutting down sockets [ 811.506691] CPU: 1 PID: 10678 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 811.514673] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 811.524025] Call Trace: [ 811.526644] dump_stack+0x1fc/0x2ef [ 811.530260] should_fail.cold+0xa/0xf [ 811.534052] ? setup_fault_attr+0x200/0x200 [ 811.538357] ? lock_acquire+0x170/0x3c0 [ 811.542318] __should_failslab+0x115/0x180 [ 811.546537] should_failslab+0x5/0x10 [ 811.550328] kmem_cache_alloc_trace+0x284/0x380 [ 811.554983] ? wait_for_completion_io+0x10/0x10 [ 811.559632] ? kobj_ns_initial+0x90/0x90 [ 811.563675] call_usermodehelper_setup+0x84/0x300 [ 811.568500] kobject_uevent_env+0xe83/0x1480 [ 811.572894] ? nbd_size_update+0x28a/0x660 [ 811.577115] ? queue_work_on+0x11a/0x1f0 [ 811.581285] nbd_start_device+0x811/0xd60 [ 811.585418] nbd_ioctl+0x62c/0xbe0 [ 811.588938] ? _copy_from_user+0xd2/0x130 [ 811.593067] ? nbd_disconnect_and_put+0x190/0x190 [ 811.597892] ? __lock_acquire+0x6de/0x3ff0 [ 811.602138] ? nbd_disconnect_and_put+0x190/0x190 [ 811.606970] blkdev_ioctl+0x5cb/0x1a80 [ 811.610838] ? blkpg_ioctl+0x9d0/0x9d0 [ 811.614736] ? get_pid_task+0xf4/0x190 [ 811.618667] ? mark_held_locks+0xf0/0xf0 [ 811.622710] ? proc_fail_nth_write+0x95/0x1d0 [ 811.627189] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 811.632099] ? __fdget_pos+0x26f/0x310 [ 811.635973] block_ioctl+0xe9/0x130 [ 811.639579] ? blkdev_fallocate+0x3f0/0x3f0 [ 811.643883] do_vfs_ioctl+0xcdb/0x12e0 [ 811.647754] ? lock_downgrade+0x720/0x720 [ 811.651905] ? check_preemption_disabled+0x41/0x280 [ 811.656903] ? ioctl_preallocate+0x200/0x200 [ 811.661309] ? __fget+0x356/0x510 [ 811.664748] ? do_dup2+0x450/0x450 [ 811.668273] ? vfs_write+0x393/0x540 [ 811.671968] ? fput+0x2b/0x190 [ 811.675143] ksys_ioctl+0x9b/0xc0 [ 811.678579] __x64_sys_ioctl+0x6f/0xb0 [ 811.682446] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 811.687008] do_syscall_64+0xf9/0x620 [ 811.690794] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 811.695961] RIP: 0033:0x7f03750e1089 [ 811.699656] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 811.718542] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 811.726229] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 executing program executing program executing program executing program [ 811.733479] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 811.740735] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 811.747984] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 811.755230] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 811.765361] block nbd2: shutting down sockets [ 811.770492] block nbd3: Device being setup by another task [ 811.800950] FAULT_INJECTION: forcing a failure. [ 811.800950] name failslab, interval 1, probability 0, space 0, times 0 [ 811.812393] block nbd1: Device being setup by another task [ 811.813440] CPU: 1 PID: 10685 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 811.818198] block nbd1: Could not allocate knbd recv work queue. [ 811.825962] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 811.825967] Call Trace: [ 811.825985] dump_stack+0x1fc/0x2ef [ 811.826003] should_fail.cold+0xa/0xf [ 811.826019] ? setup_fault_attr+0x200/0x200 [ 811.826033] ? lock_acquire+0x170/0x3c0 [ 811.826052] __should_failslab+0x115/0x180 [ 811.834422] block nbd1: shutting down sockets [ 811.841517] should_failslab+0x5/0x10 [ 811.841531] __kmalloc_track_caller+0x2a6/0x3c0 [ 811.841544] ? kstrdup_const+0x53/0x80 [ 811.841559] kstrdup+0x36/0x70 [ 811.883904] kstrdup_const+0x53/0x80 [ 811.887616] __kernfs_new_node+0x9b/0x680 [ 811.891747] ? kfree+0xcc/0x210 [ 811.895007] ? kobject_add+0x10d/0x1c0 [ 811.898878] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 811.903615] ? nbd_start_device+0x1f2/0xd60 [ 811.907922] ? nbd_ioctl+0x62c/0xbe0 [ 811.911618] ? blkdev_ioctl+0x5cb/0x1a80 [ 811.915663] ? do_vfs_ioctl+0xcdb/0x12e0 [ 811.919703] ? __x64_sys_ioctl+0x6f/0xb0 [ 811.923743] ? do_syscall_64+0xf9/0x620 [ 811.927700] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 811.933048] ? debug_check_no_obj_freed+0x201/0x490 [ 811.938050] kernfs_create_dir_ns+0x9e/0x230 [ 811.942442] sysfs_create_dir_ns+0x127/0x280 [ 811.946832] ? sysfs_create_mount_point+0xb0/0xb0 [ 811.951660] ? mark_held_locks+0xa6/0xf0 [ 811.955702] ? kfree+0x110/0x210 [ 811.959048] ? kfree_const+0x51/0x60 [ 811.962748] kobject_add_internal+0x2a5/0x9c0 [ 811.967229] kobject_add+0x150/0x1c0 [ 811.970955] ? kset_create_and_add+0x1a0/0x1a0 [ 811.975526] ? blk_mq_sysfs_register+0x2b/0x1c0 [ 811.980177] ? lock_downgrade+0x720/0x720 [ 811.984317] ? kernfs_put.part.0+0x225/0x590 [ 811.988730] blk_mq_register_hctx+0x23c/0x2c0 [ 811.993222] blk_mq_sysfs_register+0x143/0x1c0 [ 811.997793] blk_mq_update_nr_hw_queues+0x5c3/0xb50 [ 812.002797] ? workqueue_sysfs_register+0x391/0x3e0 [ 812.007802] ? blk_mq_init_queue+0xa0/0xa0 [ 812.012038] nbd_start_device+0x1f2/0xd60 [ 812.016168] ? security_capable+0x8f/0xc0 [ 812.020399] nbd_ioctl+0x62c/0xbe0 [ 812.023924] ? _copy_from_user+0xd2/0x130 [ 812.028053] ? nbd_disconnect_and_put+0x190/0x190 [ 812.032882] ? __lock_acquire+0x6de/0x3ff0 [ 812.037102] ? nbd_disconnect_and_put+0x190/0x190 [ 812.041941] blkdev_ioctl+0x5cb/0x1a80 [ 812.045823] ? blkpg_ioctl+0x9d0/0x9d0 [ 812.049695] ? get_pid_task+0xf4/0x190 [ 812.053567] ? mark_held_locks+0xf0/0xf0 [ 812.057611] ? proc_fail_nth_write+0x95/0x1d0 [ 812.062090] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 812.067001] ? __fdget_pos+0x26f/0x310 [ 812.070967] block_ioctl+0xe9/0x130 [ 812.074572] ? blkdev_fallocate+0x3f0/0x3f0 [ 812.078877] do_vfs_ioctl+0xcdb/0x12e0 [ 812.082751] ? lock_downgrade+0x720/0x720 [ 812.086884] ? check_preemption_disabled+0x41/0x280 [ 812.091884] ? ioctl_preallocate+0x200/0x200 [ 812.096276] ? __fget+0x356/0x510 [ 812.099737] ? do_dup2+0x450/0x450 [ 812.103258] ? vfs_write+0x393/0x540 [ 812.106961] ? fput+0x2b/0x190 [ 812.110137] ksys_ioctl+0x9b/0xc0 [ 812.113576] __x64_sys_ioctl+0x6f/0xb0 [ 812.117447] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 812.122011] do_syscall_64+0xf9/0x620 [ 812.125796] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 812.130968] RIP: 0033:0x7f03750e1089 [ 812.134665] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 812.153545] RSP: 002b:00007f03750442e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 812.161233] RAX: ffffffffffffffda RBX: 00007f037515e4e0 RCX: 00007f03750e1089 [ 812.168483] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 812.175731] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 812.182980] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4ec [ 812.190229] R13: 00007f03750442f0 R14: 00007f037515e4e8 R15: 0000000000000002 executing program executing program [ 812.199131] kobject_add_internal failed for cpu1 (error: -12 parent: 0) [ 812.208815] block nbd3: shutting down sockets [ 812.215743] block nbd0: Could not allocate knbd recv work queue. [ 812.222237] block nbd4: Could not allocate knbd recv work queue. [ 812.228750] block nbd2: Could not allocate knbd recv work queue. [ 812.237304] block nbd4: shutting down sockets [ 812.242540] block nbd5: Could not allocate knbd recv work queue. executing program executing program executing program executing program [ 812.250886] block nbd2: shutting down sockets [ 812.256735] block nbd0: shutting down sockets [ 812.263333] block nbd5: shutting down sockets [ 812.351176] FAULT_INJECTION: forcing a failure. [ 812.351176] name failslab, interval 1, probability 0, space 0, times 0 [ 812.351664] FAULT_INJECTION: forcing a failure. [ 812.351664] name failslab, interval 1, probability 0, space 0, times 0 [ 812.363783] FAULT_INJECTION: forcing a failure. [ 812.363783] name failslab, interval 1, probability 0, space 0, times 0 [ 812.374498] FAULT_INJECTION: forcing a failure. [ 812.374498] name failslab, interval 1, probability 0, space 0, times 0 [ 812.395964] CPU: 1 PID: 10715 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 812.404087] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 812.413434] Call Trace: [ 812.416016] dump_stack+0x1fc/0x2ef [ 812.419640] should_fail.cold+0xa/0xf [ 812.423437] ? setup_fault_attr+0x200/0x200 [ 812.427758] ? lock_acquire+0x170/0x3c0 [ 812.431731] __should_failslab+0x115/0x180 [ 812.435959] should_failslab+0x5/0x10 [ 812.439752] kmem_cache_alloc+0x277/0x370 [ 812.443894] __d_alloc+0x2b/0xa10 [ 812.447338] ? __bpf_address_lookup+0x330/0x330 [ 812.452007] ? check_preemption_disabled+0x41/0x280 [ 812.457022] d_alloc+0x4a/0x230 [ 812.460300] d_alloc_parallel+0xeb/0x19e0 [ 812.464449] ? mark_held_locks+0xf0/0xf0 [ 812.468504] ? __d_lookup_rcu+0x6b0/0x6b0 [ 812.472660] ? mark_held_locks+0xf0/0xf0 [ 812.476721] ? __lockdep_init_map+0x100/0x5a0 [ 812.481210] ? __lockdep_init_map+0x100/0x5a0 [ 812.485715] __lookup_slow+0x18d/0x4a0 [ 812.489601] ? check_preemption_disabled+0x41/0x280 [ 812.494613] ? follow_dotdot_rcu+0x1040/0x1040 [ 812.499285] ? __d_lookup+0x411/0x710 [ 812.503095] ? d_lookup+0x18e/0x250 [ 812.506725] lookup_one_len+0x163/0x190 [ 812.510702] ? try_lookup_one_len+0x180/0x180 [ 812.515195] start_creating+0xc9/0x220 [ 812.519076] __debugfs_create_file+0x5e/0x480 [ 812.523572] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 812.528756] ? kvm_clock_get_cycles+0x14/0x30 [ 812.533241] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 812.538076] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 812.542994] ? init_srcu_struct_fields+0xca6/0x1190 [ 812.548008] ? srcu_reschedule+0x120/0x120 [ 812.552234] ? __raw_spin_lock_init+0x28/0x100 [ 812.556815] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 812.561566] ? nbd_clear_que+0x160/0x160 [ 812.565622] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 812.570632] ? workqueue_sysfs_register+0x391/0x3e0 [ 812.575643] ? blk_mq_init_queue+0xa0/0xa0 [ 812.579873] ? apparmor_sb_mount+0x970/0x970 [ 812.584275] nbd_start_device+0x1f2/0xd60 [ 812.588420] ? security_capable+0x8f/0xc0 [ 812.592569] nbd_ioctl+0x62c/0xbe0 [ 812.596104] ? _copy_from_user+0xd2/0x130 [ 812.600248] ? nbd_disconnect_and_put+0x190/0x190 [ 812.605087] ? __lock_acquire+0x6de/0x3ff0 [ 812.609317] ? nbd_disconnect_and_put+0x190/0x190 [ 812.614158] blkdev_ioctl+0x5cb/0x1a80 [ 812.618036] ? blkpg_ioctl+0x9d0/0x9d0 [ 812.621922] ? get_pid_task+0xf4/0x190 [ 812.625812] ? mark_held_locks+0xf0/0xf0 [ 812.629868] ? proc_fail_nth_write+0x95/0x1d0 [ 812.634442] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 812.639368] ? __fdget_pos+0x26f/0x310 [ 812.643267] block_ioctl+0xe9/0x130 [ 812.646897] ? blkdev_fallocate+0x3f0/0x3f0 [ 812.651210] do_vfs_ioctl+0xcdb/0x12e0 [ 812.655091] ? lock_downgrade+0x720/0x720 [ 812.659233] ? check_preemption_disabled+0x41/0x280 [ 812.664244] ? ioctl_preallocate+0x200/0x200 [ 812.668650] ? __fget+0x356/0x510 [ 812.672103] ? do_dup2+0x450/0x450 [ 812.675641] ? vfs_write+0x393/0x540 [ 812.679356] ? fput+0x2b/0x190 [ 812.682551] ksys_ioctl+0x9b/0xc0 [ 812.686023] __x64_sys_ioctl+0x6f/0xb0 [ 812.689909] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 812.694491] do_syscall_64+0xf9/0x620 [ 812.698292] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 812.703476] RIP: 0033:0x7f03750e1089 [ 812.707186] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 812.726082] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 812.733789] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 812.741055] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 812.748325] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 812.755581] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 812.762840] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 812.770117] CPU: 0 PID: 10714 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 812.775420] FAULT_INJECTION: forcing a failure. [ 812.775420] name failslab, interval 1, probability 0, space 0, times 0 [ 812.778086] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 812.778091] Call Trace: [ 812.778109] dump_stack+0x1fc/0x2ef [ 812.778130] should_fail.cold+0xa/0xf [ 812.808591] ? setup_fault_attr+0x200/0x200 [ 812.812903] ? lock_acquire+0x170/0x3c0 [ 812.816879] __should_failslab+0x115/0x180 [ 812.821108] should_failslab+0x5/0x10 [ 812.824905] kmem_cache_alloc+0x277/0x370 [ 812.829049] __d_alloc+0x2b/0xa10 [ 812.832491] ? __bpf_address_lookup+0x330/0x330 [ 812.837150] ? check_preemption_disabled+0x41/0x280 [ 812.842162] d_alloc+0x4a/0x230 [ 812.845435] d_alloc_parallel+0xeb/0x19e0 [ 812.849583] ? mark_held_locks+0xf0/0xf0 [ 812.853644] ? __d_lookup_rcu+0x6b0/0x6b0 [ 812.857787] ? mark_held_locks+0xf0/0xf0 [ 812.861839] ? __lockdep_init_map+0x100/0x5a0 [ 812.866325] ? __lockdep_init_map+0x100/0x5a0 [ 812.870815] __lookup_slow+0x18d/0x4a0 [ 812.874697] ? check_preemption_disabled+0x41/0x280 [ 812.879761] ? follow_dotdot_rcu+0x1040/0x1040 [ 812.884337] ? __d_lookup+0x411/0x710 [ 812.888143] ? d_lookup+0x18e/0x250 [ 812.891773] lookup_one_len+0x163/0x190 [ 812.895744] ? try_lookup_one_len+0x180/0x180 [ 812.900237] start_creating+0xc9/0x220 [ 812.904119] __debugfs_create_file+0x5e/0x480 [ 812.908609] blk_mq_debugfs_register_hctx+0x241/0x6a0 [ 812.913794] ? kvm_clock_get_cycles+0x14/0x30 [ 812.918282] ? ktime_get_mono_fast_ns+0x168/0x1f0 [ 812.923123] ? blk_mq_debugfs_unregister+0xa0/0xa0 [ 812.928042] ? init_srcu_struct_fields+0xca6/0x1190 [ 812.933051] ? srcu_reschedule+0x120/0x120 [ 812.937282] ? __raw_spin_lock_init+0x28/0x100 [ 812.941878] blk_mq_realloc_hw_ctxs+0x8e9/0x1000 [ 812.946632] ? nbd_clear_que+0x160/0x160 [ 812.950689] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 812.955695] ? workqueue_sysfs_register+0x391/0x3e0 [ 812.960707] ? blk_mq_init_queue+0xa0/0xa0 [ 812.964934] ? apparmor_sb_mount+0x970/0x970 [ 812.969340] nbd_start_device+0x1f2/0xd60 [ 812.973485] ? security_capable+0x8f/0xc0 [ 812.977636] nbd_ioctl+0x62c/0xbe0 [ 812.981168] ? _copy_from_user+0xd2/0x130 [ 812.985311] ? nbd_disconnect_and_put+0x190/0x190 [ 812.990150] ? __lock_acquire+0x6de/0x3ff0 [ 812.994379] ? nbd_disconnect_and_put+0x190/0x190 [ 812.999305] blkdev_ioctl+0x5cb/0x1a80 [ 813.003185] ? blkpg_ioctl+0x9d0/0x9d0 [ 813.007065] ? get_pid_task+0xf4/0x190 [ 813.010945] ? mark_held_locks+0xf0/0xf0 [ 813.014995] ? proc_fail_nth_write+0x95/0x1d0 [ 813.019480] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 813.024397] ? __fdget_pos+0x26f/0x310 [ 813.028285] block_ioctl+0xe9/0x130 [ 813.031899] ? blkdev_fallocate+0x3f0/0x3f0 [ 813.036210] do_vfs_ioctl+0xcdb/0x12e0 [ 813.040088] ? lock_downgrade+0x720/0x720 [ 813.044227] ? check_preemption_disabled+0x41/0x280 [ 813.049234] ? ioctl_preallocate+0x200/0x200 [ 813.053638] ? __fget+0x356/0x510 [ 813.057081] ? do_dup2+0x450/0x450 [ 813.060616] ? vfs_write+0x393/0x540 [ 813.064325] ? fput+0x2b/0x190 [ 813.067512] ksys_ioctl+0x9b/0xc0 [ 813.070962] __x64_sys_ioctl+0x6f/0xb0 [ 813.074839] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 813.079412] do_syscall_64+0xf9/0x620 [ 813.083205] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 813.088382] RIP: 0033:0x7f03750e1089 [ 813.092090] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 813.110985] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 813.118682] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 813.125944] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 813.133204] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 813.140467] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 813.147727] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 813.155005] CPU: 1 PID: 10722 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 813.162983] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 813.172333] Call Trace: [ 813.174925] dump_stack+0x1fc/0x2ef [ 813.178560] should_fail.cold+0xa/0xf [ 813.182364] ? setup_fault_attr+0x200/0x200 [ 813.186734] ? lock_acquire+0x170/0x3c0 [ 813.190722] __should_failslab+0x115/0x180 [ 813.194961] should_failslab+0x5/0x10 [ 813.198762] kmem_cache_alloc_trace+0x284/0x380 [ 813.203429] ? wait_for_completion_io+0x10/0x10 [ 813.208109] ? kobj_ns_initial+0x90/0x90 [ 813.212187] call_usermodehelper_setup+0x84/0x300 [ 813.217039] kobject_uevent_env+0xe83/0x1480 [ 813.221462] ? nbd_size_update+0x28a/0x660 [ 813.225699] ? queue_work_on+0x11a/0x1f0 [ 813.229781] nbd_start_device+0x811/0xd60 [ 813.233947] nbd_ioctl+0x62c/0xbe0 [ 813.237488] ? _copy_from_user+0xd2/0x130 [ 813.241639] ? nbd_disconnect_and_put+0x190/0x190 [ 813.246494] ? __lock_acquire+0x6de/0x3ff0 [ 813.250836] ? nbd_disconnect_and_put+0x190/0x190 [ 813.255679] blkdev_ioctl+0x5cb/0x1a80 [ 813.259569] ? blkpg_ioctl+0x9d0/0x9d0 [ 813.263455] ? get_pid_task+0xf4/0x190 [ 813.267339] ? mark_held_locks+0xf0/0xf0 [ 813.271394] ? proc_fail_nth_write+0x95/0x1d0 [ 813.275884] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 813.280810] ? __fdget_pos+0x26f/0x310 [ 813.284700] block_ioctl+0xe9/0x130 [ 813.288318] ? blkdev_fallocate+0x3f0/0x3f0 [ 813.292630] do_vfs_ioctl+0xcdb/0x12e0 [ 813.296509] ? lock_downgrade+0x720/0x720 [ 813.300651] ? check_preemption_disabled+0x41/0x280 [ 813.305663] ? ioctl_preallocate+0x200/0x200 [ 813.310065] ? __fget+0x356/0x510 [ 813.313508] ? do_dup2+0x450/0x450 [ 813.317055] ? vfs_write+0x393/0x540 [ 813.320773] ? fput+0x2b/0x190 [ 813.323968] ksys_ioctl+0x9b/0xc0 [ 813.327420] __x64_sys_ioctl+0x6f/0xb0 [ 813.331308] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 813.335889] do_syscall_64+0xf9/0x620 [ 813.339690] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 813.344871] RIP: 0033:0x7f03750e1089 [ 813.348576] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 813.367465] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 813.375163] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 813.382427] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 813.389690] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 813.396947] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc executing program [ 813.404226] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 813.411505] CPU: 0 PID: 10727 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 813.415645] block nbd4: shutting down sockets [ 813.419472] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 813.419478] Call Trace: [ 813.419497] dump_stack+0x1fc/0x2ef [ 813.419515] should_fail.cold+0xa/0xf [ 813.419531] ? setup_fault_attr+0x200/0x200 [ 813.419545] ? lock_acquire+0x170/0x3c0 [ 813.419570] __should_failslab+0x115/0x180 [ 813.419586] should_failslab+0x5/0x10 [ 813.419600] kmem_cache_alloc_trace+0x284/0x380 [ 813.419611] ? wait_for_completion_io+0x10/0x10 [ 813.419628] ? kobj_ns_initial+0x90/0x90 [ 813.433894] block nbd3: shutting down sockets [ 813.436018] call_usermodehelper_setup+0x84/0x300 [ 813.436042] kobject_uevent_env+0xe83/0x1480 [ 813.462114] block nbd1: shutting down sockets [ 813.464369] ? nbd_size_update+0x28a/0x660 [ 813.464388] ? queue_work_on+0x11a/0x1f0 [ 813.499490] nbd_start_device+0x811/0xd60 [ 813.503639] nbd_ioctl+0x62c/0xbe0 [ 813.507176] ? _copy_from_user+0xd2/0x130 [ 813.511319] ? nbd_disconnect_and_put+0x190/0x190 [ 813.516161] ? __lock_acquire+0x6de/0x3ff0 [ 813.520388] ? nbd_disconnect_and_put+0x190/0x190 [ 813.525222] blkdev_ioctl+0x5cb/0x1a80 [ 813.529100] ? blkpg_ioctl+0x9d0/0x9d0 [ 813.532980] ? get_pid_task+0xf4/0x190 [ 813.536862] ? mark_held_locks+0xf0/0xf0 [ 813.540914] ? proc_fail_nth_write+0x95/0x1d0 [ 813.545399] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 813.550320] ? __fdget_pos+0x26f/0x310 [ 813.554212] block_ioctl+0xe9/0x130 [ 813.557830] ? blkdev_fallocate+0x3f0/0x3f0 [ 813.562144] do_vfs_ioctl+0xcdb/0x12e0 [ 813.566027] ? lock_downgrade+0x720/0x720 [ 813.570166] ? check_preemption_disabled+0x41/0x280 [ 813.575176] ? ioctl_preallocate+0x200/0x200 [ 813.579578] ? __fget+0x356/0x510 [ 813.583020] ? do_dup2+0x450/0x450 [ 813.586552] ? vfs_write+0x393/0x540 [ 813.590258] ? fput+0x2b/0x190 [ 813.593446] ksys_ioctl+0x9b/0xc0 [ 813.596888] __x64_sys_ioctl+0x6f/0xb0 [ 813.600765] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 813.605336] do_syscall_64+0xf9/0x620 [ 813.609130] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 813.614309] RIP: 0033:0x7f03750e1089 [ 813.618010] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 813.637589] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 813.645282] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 813.652557] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 813.659811] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 813.667324] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 813.674578] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 813.681850] CPU: 1 PID: 10732 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 813.689820] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 813.697054] FAULT_INJECTION: forcing a failure. executing program [ 813.697054] name failslab, interval 1, probability 0, space 0, times 0 [ 813.699160] Call Trace: [ 813.699181] dump_stack+0x1fc/0x2ef [ 813.699207] should_fail.cold+0xa/0xf [ 813.720434] ? setup_fault_attr+0x200/0x200 [ 813.724757] ? lock_acquire+0x170/0x3c0 [ 813.728737] __should_failslab+0x115/0x180 [ 813.732972] should_failslab+0x5/0x10 [ 813.736770] kmem_cache_alloc_trace+0x284/0x380 [ 813.741438] ? wait_for_completion_io+0x10/0x10 [ 813.746100] ? kobj_ns_initial+0x90/0x90 [ 813.750157] call_usermodehelper_setup+0x84/0x300 [ 813.754997] kobject_uevent_env+0xe83/0x1480 [ 813.759403] ? nbd_size_update+0x28a/0x660 [ 813.763631] ? queue_work_on+0x11a/0x1f0 [ 813.767698] nbd_start_device+0x811/0xd60 [ 813.771943] nbd_ioctl+0x62c/0xbe0 [ 813.775485] ? _copy_from_user+0xd2/0x130 [ 813.779626] ? nbd_disconnect_and_put+0x190/0x190 [ 813.784464] ? __lock_acquire+0x6de/0x3ff0 [ 813.788692] ? nbd_disconnect_and_put+0x190/0x190 [ 813.793532] blkdev_ioctl+0x5cb/0x1a80 [ 813.797412] ? blkpg_ioctl+0x9d0/0x9d0 [ 813.801291] ? get_pid_task+0xf4/0x190 [ 813.805172] ? mark_held_locks+0xf0/0xf0 [ 813.809219] ? proc_fail_nth_write+0x95/0x1d0 [ 813.813708] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 813.818627] ? __fdget_pos+0x26f/0x310 [ 813.822526] block_ioctl+0xe9/0x130 [ 813.826144] ? blkdev_fallocate+0x3f0/0x3f0 [ 813.830455] do_vfs_ioctl+0xcdb/0x12e0 [ 813.834338] ? lock_downgrade+0x720/0x720 [ 813.838476] ? check_preemption_disabled+0x41/0x280 [ 813.843485] ? ioctl_preallocate+0x200/0x200 [ 813.847883] ? __fget+0x356/0x510 [ 813.851328] ? do_dup2+0x450/0x450 [ 813.854853] ? vfs_write+0x393/0x540 [ 813.858558] ? fput+0x2b/0x190 [ 813.861746] ksys_ioctl+0x9b/0xc0 [ 813.865192] __x64_sys_ioctl+0x6f/0xb0 [ 813.869072] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 813.873642] do_syscall_64+0xf9/0x620 [ 813.877442] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 813.882621] RIP: 0033:0x7f03750e1089 [ 813.886324] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 813.905213] RSP: 002b:00007f03750652e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 813.912911] RAX: ffffffffffffffda RBX: 00007f037515e4d0 RCX: 00007f03750e1089 [ 813.920169] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 813.927422] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 813.934676] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4dc [ 813.941928] R13: 00007f03750652f0 R14: 00007f037515e4d8 R15: 0000000000000002 [ 813.949203] CPU: 0 PID: 10725 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 executing program executing program [ 813.957175] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 813.960981] block nbd2: shutting down sockets [ 813.966529] Call Trace: [ 813.966549] dump_stack+0x1fc/0x2ef [ 813.966567] should_fail.cold+0xa/0xf [ 813.966583] ? setup_fault_attr+0x200/0x200 [ 813.971301] block nbd0: shutting down sockets [ 813.973633] ? __debug_object_init+0x410/0x9b0 [ 813.973655] __should_failslab+0x115/0x180 [ 813.973675] should_failslab+0x5/0x10 [ 814.002426] kmem_cache_alloc_node_trace+0x244/0x3b0 [ 814.007571] __kmalloc_node+0x38/0x70 [ 814.011365] blk_mq_realloc_hw_ctxs+0x568/0x1000 [ 814.016118] ? blk_mq_update_queue_map+0x178/0x200 [ 814.021042] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 814.026044] ? workqueue_sysfs_register+0x391/0x3e0 [ 814.031047] ? blk_mq_init_queue+0xa0/0xa0 [ 814.035264] ? apparmor_sb_mount+0x970/0x970 [ 814.039660] nbd_start_device+0x1f2/0xd60 [ 814.043791] ? security_capable+0x8f/0xc0 [ 814.047920] nbd_ioctl+0x62c/0xbe0 [ 814.051442] ? _copy_from_user+0xd2/0x130 [ 814.055573] ? nbd_disconnect_and_put+0x190/0x190 [ 814.060401] ? __lock_acquire+0x6de/0x3ff0 [ 814.064621] ? nbd_disconnect_and_put+0x190/0x190 [ 814.069453] blkdev_ioctl+0x5cb/0x1a80 [ 814.073324] ? blkpg_ioctl+0x9d0/0x9d0 [ 814.077201] ? get_pid_task+0xf4/0x190 [ 814.081068] ? mark_held_locks+0xf0/0xf0 [ 814.085110] ? proc_fail_nth_write+0x95/0x1d0 [ 814.089586] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 814.094491] ? __fdget_pos+0x26f/0x310 [ 814.098366] block_ioctl+0xe9/0x130 [ 814.101970] ? blkdev_fallocate+0x3f0/0x3f0 [ 814.106274] do_vfs_ioctl+0xcdb/0x12e0 [ 814.110142] ? lock_downgrade+0x720/0x720 [ 814.114268] ? check_preemption_disabled+0x41/0x280 [ 814.119268] ? ioctl_preallocate+0x200/0x200 [ 814.123659] ? __fget+0x356/0x510 [ 814.127091] ? do_dup2+0x450/0x450 [ 814.130615] ? vfs_write+0x393/0x540 [ 814.134309] ? fput+0x2b/0x190 [ 814.137499] ksys_ioctl+0x9b/0xc0 [ 814.140958] __x64_sys_ioctl+0x6f/0xb0 [ 814.144829] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 814.149406] do_syscall_64+0xf9/0x620 [ 814.153196] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 814.158366] RIP: 0033:0x7f03750e1089 [ 814.162061] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 814.181321] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 814.189014] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 814.196263] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 executing program [ 814.203524] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 814.210781] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 814.218039] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 814.233292] BUG: unable to handle kernel NULL pointer dereference at 0000000000000118 [ 814.241268] PGD aa872067 P4D aa872067 PUD b527d067 PMD 0 [ 814.246812] Oops: 0002 [#1] PREEMPT SMP KASAN [ 814.251296] CPU: 0 PID: 10725 Comm: syz-executor386 Not tainted 4.19.211-syzkaller #0 [ 814.259243] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 814.268592] RIP: 0010:blk_mq_map_swqueue+0x287/0xa20 [ 814.273681] Code: c1 ea 03 80 3c 1a 00 0f 85 cf 06 00 00 89 ee bf 07 00 00 00 4d 8b 3f e8 47 04 fd fd 83 fd 07 0f 87 04 05 00 00 e8 c9 02 fd fd 4d 0f ab b7 18 01 00 00 49 8d bf 74 01 00 00 48 89 fa 48 c1 ea [ 814.292686] RSP: 0018:ffff8880b3537920 EFLAGS: 00010293 [ 814.298027] RAX: ffff888096e6a100 RBX: dffffc0000000000 RCX: ffffffff83658299 [ 814.305277] RDX: 0000000000000000 RSI: ffffffff836582a7 RDI: 0000000000000005 [ 814.312522] RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000007 [ 814.319769] R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880ae4fc040 [ 814.327016] R13: ffffe8ffffd3a6c0 R14: 0000000000000001 R15: 0000000000000000 [ 814.334262] FS: 00007f0375086700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 814.342472] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 814.348331] CR2: 0000000000000118 CR3: 00000000a9920000 CR4: 00000000003406f0 [ 814.355583] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 814.362828] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 814.370071] Call Trace: [ 814.372643] blk_mq_update_nr_hw_queues+0x5bb/0xb50 [ 814.377645] ? workqueue_sysfs_register+0x391/0x3e0 [ 814.382650] ? blk_mq_init_queue+0xa0/0xa0 [ 814.386868] ? apparmor_sb_mount+0x970/0x970 [ 814.391255] nbd_start_device+0x1f2/0xd60 [ 814.395381] ? security_capable+0x8f/0xc0 [ 814.399505] nbd_ioctl+0x62c/0xbe0 [ 814.403028] ? _copy_from_user+0xd2/0x130 [ 814.407414] ? nbd_disconnect_and_put+0x190/0x190 [ 814.412236] ? __lock_acquire+0x6de/0x3ff0 [ 814.416458] ? nbd_disconnect_and_put+0x190/0x190 [ 814.421289] blkdev_ioctl+0x5cb/0x1a80 [ 814.425153] ? blkpg_ioctl+0x9d0/0x9d0 [ 814.429020] ? get_pid_task+0xf4/0x190 [ 814.432893] ? mark_held_locks+0xf0/0xf0 [ 814.436942] ? proc_fail_nth_write+0x95/0x1d0 [ 814.441423] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 814.446329] ? __fdget_pos+0x26f/0x310 [ 814.450207] block_ioctl+0xe9/0x130 [ 814.453816] ? blkdev_fallocate+0x3f0/0x3f0 [ 814.458116] do_vfs_ioctl+0xcdb/0x12e0 [ 814.461991] ? lock_downgrade+0x720/0x720 [ 814.466123] ? check_preemption_disabled+0x41/0x280 [ 814.471121] ? ioctl_preallocate+0x200/0x200 [ 814.475509] ? __fget+0x356/0x510 [ 814.478941] ? do_dup2+0x450/0x450 [ 814.482459] ? vfs_write+0x393/0x540 [ 814.486158] ? fput+0x2b/0x190 [ 814.489330] ksys_ioctl+0x9b/0xc0 [ 814.492758] __x64_sys_ioctl+0x6f/0xb0 [ 814.496626] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 814.501198] do_syscall_64+0xf9/0x620 [ 814.504983] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 814.510149] RIP: 0033:0x7f03750e1089 [ 814.513842] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 01 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 814.532724] RSP: 002b:00007f03750862e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 814.540405] RAX: ffffffffffffffda RBX: 00007f037515e4c0 RCX: 00007f03750e1089 [ 814.547651] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 814.554896] RBP: 00007f037512b3bc R08: 0000000000000002 R09: 0000000000003932 [ 814.562145] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f037515e4cc [ 814.569912] R13: 00007f03750862f0 R14: 00007f037515e4c8 R15: 0000000000000002 [ 814.577157] Modules linked in: [ 814.580327] CR2: 0000000000000118 [ 814.583768] ---[ end trace 64bc7ae3f1c76c37 ]--- [ 814.588516] RIP: 0010:blk_mq_map_swqueue+0x287/0xa20 [ 814.593604] Code: c1 ea 03 80 3c 1a 00 0f 85 cf 06 00 00 89 ee bf 07 00 00 00 4d 8b 3f e8 47 04 fd fd 83 fd 07 0f 87 04 05 00 00 e8 c9 02 fd fd 4d 0f ab b7 18 01 00 00 49 8d bf 74 01 00 00 48 89 fa 48 c1 ea [ 814.612489] RSP: 0018:ffff8880b3537920 EFLAGS: 00010293 [ 814.617828] RAX: ffff888096e6a100 RBX: dffffc0000000000 RCX: ffffffff83658299 [ 814.625081] RDX: 0000000000000000 RSI: ffffffff836582a7 RDI: 0000000000000005 [ 814.632336] RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000007 [ 814.639581] R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880ae4fc040 [ 814.646836] R13: ffffe8ffffd3a6c0 R14: 0000000000000001 R15: 0000000000000000 [ 814.654090] FS: 00007f0375086700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 814.662292] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 814.668148] CR2: 0000000000000118 CR3: 00000000a9920000 CR4: 00000000003406f0 [ 814.675397] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 814.682644] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 814.689892] Kernel panic - not syncing: Fatal exception [ 814.695391] Kernel Offset: disabled [ 814.698997] Rebooting in 86400 seconds..