Warning: Permanently added '10.128.0.31' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 35.803057] FAULT_INJECTION: forcing a failure. [ 35.803057] name failslab, interval 1, probability 0, space 0, times 1 [ 35.815771] CPU: 0 PID: 8099 Comm: syz-executor331 Not tainted 4.19.211-syzkaller #0 [ 35.824045] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.833913] Call Trace: [ 35.836941] dump_stack+0x1fc/0x2ef [ 35.840662] should_fail.cold+0xa/0xf [ 35.844486] ? setup_fault_attr+0x200/0x200 [ 35.848879] ? should_fail+0x142/0x7b0 [ 35.852770] __should_failslab+0x115/0x180 [ 35.857010] should_failslab+0x5/0x10 [ 35.860822] kmem_cache_alloc_node_trace+0x244/0x3b0 [ 35.866730] __kmalloc_node+0x38/0x70 [ 35.870719] sbitmap_init_node+0x123/0x440 [ 35.875487] blk_mq_realloc_hw_ctxs+0x5db/0x1000 [ 35.880254] blk_mq_update_nr_hw_queues+0x557/0xb50 [ 35.885659] ? workqueue_sysfs_register+0x391/0x3e0 [ 35.890788] ? blk_mq_init_queue+0xa0/0xa0 [ 35.895017] ? apparmor_sb_mount+0x970/0x970 [ 35.899521] nbd_start_device+0x1f2/0xd60 [ 35.904545] ? security_capable+0x8f/0xc0 [ 35.908721] nbd_ioctl+0x62c/0xbe0 [ 35.912434] ? _copy_from_user+0xd2/0x130 [ 35.916674] ? nbd_disconnect_and_put+0x190/0x190 [ 35.921522] ? get_pid_task+0xcd/0x190 [ 35.925679] ? check_preemption_disabled+0x41/0x280 [ 35.930705] ? lock_downgrade+0x720/0x720 [ 35.934854] ? nbd_disconnect_and_put+0x190/0x190 [ 35.939733] blkdev_ioctl+0x5cb/0x1a80 [ 35.943677] ? blkpg_ioctl+0x9d0/0x9d0 [ 35.947570] ? get_pid_task+0xf4/0x190 [ 35.951463] ? proc_fail_nth_write+0x95/0x1d0 [ 35.956363] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 35.961736] ? debug_check_no_obj_freed+0x201/0x490 [ 35.967707] block_ioctl+0xe9/0x130 [ 35.973112] ? blkdev_fallocate+0x3f0/0x3f0 [ 35.977559] do_vfs_ioctl+0xcdb/0x12e0 [ 35.981732] ? vfs_write+0x3d7/0x540 [ 35.986700] ? ioctl_preallocate+0x200/0x200 [ 35.991208] ? lock_downgrade+0x720/0x720 [ 35.995565] ? check_preemption_disabled+0x41/0x280 [ 36.000723] ? vfs_write+0x393/0x540 [ 36.004962] ? ksys_write+0x1c8/0x2a0 [ 36.008768] ksys_ioctl+0x9b/0xc0 [ 36.012224] __x64_sys_ioctl+0x6f/0xb0 [ 36.016103] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 36.020688] do_syscall_64+0xf9/0x620 [ 36.024492] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 36.029852] RIP: 0033:0x7f0ba4546dd9 [ 36.033552] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48 [ 36.052817] RSP: 002b:00007fffa8781548 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 36.060511] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f0ba4546dd9 [ 36.068820] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 36.076431] RBP: 00007fffa8781550 R08: 0000000000000002 R09: 00007f0ba4003331 [ 36.084218] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008 [ 36.091901] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 36.102205] BUG: unable to handle kernel NULL pointer dereference at 0000000000000118 [ 36.110917] PGD 97424067 P4D 97424067 PUD 96482067 PMD 0 [ 36.116596] Oops: 0002 [#1] PREEMPT SMP KASAN [ 36.121083] CPU: 0 PID: 8099 Comm: syz-executor331 Not tainted 4.19.211-syzkaller #0 [ 36.129081] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.138777] RIP: 0010:blk_mq_map_swqueue+0x287/0xa20 [ 36.144559] 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 [ 36.163587] RSP: 0018:ffff8880a157f920 EFLAGS: 00010293 [ 36.169085] RAX: ffff8880916741c0 RBX: dffffc0000000000 RCX: ffffffff83658299 [ 36.176422] RDX: 0000000000000000 RSI: ffffffff836582a7 RDI: 0000000000000005 [ 36.183867] RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000007 [ 36.191725] R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880ae47a080 [ 36.198995] R13: ffffe8ffffd37f80 R14: 0000000000000001 R15: 0000000000000000 [ 36.206297] FS: 0000555556a17300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 36.214515] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.220387] CR2: 0000000000000118 CR3: 00000000b5073000 CR4: 00000000003406f0 [ 36.227790] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.235253] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.242613] Call Trace: [ 36.245320] blk_mq_update_nr_hw_queues+0x5bb/0xb50 [ 36.250557] ? workqueue_sysfs_register+0x391/0x3e0 [ 36.256018] ? blk_mq_init_queue+0xa0/0xa0 [ 36.260248] ? apparmor_sb_mount+0x970/0x970 [ 36.264713] nbd_start_device+0x1f2/0xd60 [ 36.272792] ? security_capable+0x8f/0xc0 [ 36.277163] nbd_ioctl+0x62c/0xbe0 [ 36.280699] ? _copy_from_user+0xd2/0x130 [ 36.284978] ? nbd_disconnect_and_put+0x190/0x190 [ 36.290075] ? get_pid_task+0xcd/0x190 [ 36.294622] ? check_preemption_disabled+0x41/0x280 [ 36.300282] ? lock_downgrade+0x720/0x720 [ 36.304620] ? nbd_disconnect_and_put+0x190/0x190 [ 36.309476] blkdev_ioctl+0x5cb/0x1a80 [ 36.313740] ? blkpg_ioctl+0x9d0/0x9d0 [ 36.317846] ? get_pid_task+0xf4/0x190 [ 36.321717] ? proc_fail_nth_write+0x95/0x1d0 [ 36.326390] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 36.331308] ? debug_check_no_obj_freed+0x201/0x490 [ 36.336340] block_ioctl+0xe9/0x130 [ 36.339964] ? blkdev_fallocate+0x3f0/0x3f0 [ 36.344567] do_vfs_ioctl+0xcdb/0x12e0 [ 36.348802] ? vfs_write+0x3d7/0x540 [ 36.353545] ? ioctl_preallocate+0x200/0x200 [ 36.359391] ? lock_downgrade+0x720/0x720 [ 36.363654] ? check_preemption_disabled+0x41/0x280 [ 36.368670] ? vfs_write+0x393/0x540 [ 36.372639] ? ksys_write+0x1c8/0x2a0 [ 36.376450] ksys_ioctl+0x9b/0xc0 [ 36.379976] __x64_sys_ioctl+0x6f/0xb0 [ 36.383848] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 36.388415] do_syscall_64+0xf9/0x620 [ 36.392218] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 36.397909] RIP: 0033:0x7f0ba4546dd9 [ 36.401687] Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 00 00 00 00 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 c0 ff ff ff f7 d8 64 89 01 48 [ 36.421301] RSP: 002b:00007fffa8781548 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 36.429129] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f0ba4546dd9 [ 36.436629] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 36.444533] RBP: 00007fffa8781550 R08: 0000000000000002 R09: 00007f0ba4003331 [ 36.453133] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008 [ 36.460907] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 36.468162] Modules linked in: [ 36.471363] CR2: 0000000000000118 [ 36.475177] ---[ end trace 567dfb4804030a99 ]--- [ 36.480421] RIP: 0010:blk_mq_map_swqueue+0x287/0xa20 [ 36.485558] 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 [ 36.504875] RSP: 0018:ffff8880a157f920 EFLAGS: 00010293 [ 36.510328] RAX: ffff8880916741c0 RBX: dffffc0000000000 RCX: ffffffff83658299 [ 36.518139] RDX: 0000000000000000 RSI: ffffffff836582a7 RDI: 0000000000000005 [ 36.525787] RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000007 [ 36.533313] R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880ae47a080 [ 36.540908] R13: ffffe8ffffd37f80 R14: 0000000000000001 R15: 0000000000000000 [ 36.548174] FS: 0000555556a17300(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 [ 36.556390] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.562607] CR2: 0000000000000118 CR3: 00000000b5073000 CR4: 00000000003406f0 [ 36.570225] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 36.577652] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 36.585026] Kernel panic - not syncing: Fatal exception [ 36.590512] Kernel Offset: disabled [ 36.594140] Rebooting in 86400 seconds..