Warning: Permanently added '10.128.0.103' (ECDSA) to the list of known hosts. executing program [ 29.150315] FAULT_INJECTION: forcing a failure. [ 29.150315] name failslab, interval 1, probability 0, space 0, times 1 [ 29.161776] CPU: 1 PID: 7960 Comm: syz-executor615 Not tainted 4.14.267-syzkaller #0 [ 29.169649] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.179109] Call Trace: [ 29.181686] dump_stack+0x1b2/0x281 [ 29.185386] should_fail.cold+0x10a/0x149 [ 29.189535] should_failslab+0xd6/0x130 [ 29.193498] kmem_cache_alloc_node_trace+0x25a/0x400 [ 29.198582] sbitmap_queue_init_node+0x27f/0x5d0 [ 29.203329] ? kmem_cache_alloc_node_trace+0x383/0x400 [ 29.208602] blk_mq_init_tags+0x14b/0x280 [ 29.212747] blk_mq_alloc_rq_map+0x90/0x220 [ 29.217048] blk_mq_sched_alloc_tags+0xaa/0x240 [ 29.221702] blk_mq_sched_init_hctx+0x5e/0x200 [ 29.226267] blk_mq_realloc_hw_ctxs+0x64e/0xe00 [ 29.230921] ? blk_mq_update_queue_map+0x158/0x1f0 [ 29.235832] blk_mq_update_nr_hw_queues+0x1f3/0x3e0 [ 29.240842] nbd_start_device+0x1d7/0xca0 [ 29.244967] nbd_ioctl+0x3a8/0xa80 [ 29.248484] ? get_pid_task+0x91/0x130 [ 29.252357] ? nbd_disconnect_and_put+0x140/0x140 [ 29.257181] ? lock_downgrade+0x740/0x740 [ 29.261305] ? nbd_disconnect_and_put+0x140/0x140 [ 29.266127] blkdev_ioctl+0x540/0x1830 [ 29.270250] ? proc_fail_nth_write+0x7b/0x180 [ 29.274719] ? blkpg_ioctl+0x8d0/0x8d0 [ 29.278586] ? fsnotify+0x974/0x11b0 [ 29.282275] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 29.287182] ? debug_check_no_obj_freed+0x2c0/0x680 [ 29.292178] block_ioctl+0xd9/0x120 [ 29.295795] ? blkdev_fallocate+0x3a0/0x3a0 [ 29.300094] do_vfs_ioctl+0x75a/0xff0 [ 29.303873] ? ioctl_preallocate+0x1a0/0x1a0 [ 29.308258] ? vfs_write+0x319/0x4d0 [ 29.311949] ? SyS_write+0x14d/0x210 [ 29.315638] ? security_file_ioctl+0x83/0xb0 [ 29.320021] SyS_ioctl+0x7f/0xb0 [ 29.323363] ? do_vfs_ioctl+0xff0/0xff0 [ 29.327313] do_syscall_64+0x1d5/0x640 [ 29.331179] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.336345] RIP: 0033:0x7f09794d9dd9 [ 29.340034] RSP: 002b:00007ffcb0c44a48 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 29.347822] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f09794d9dd9 [ 29.355068] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 29.362319] RBP: 00007ffcb0c44a50 R08: 0000000000000002 R09: 00007f0979003631 [ 29.369562] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008 [ 29.376807] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 29.391669] BUG: unable to handle kernel NULL pointer dereference at 0000000000000120 [ 29.399656] IP: blk_mq_map_swqueue+0x253/0x990 [ 29.404210] PGD ab03b067 P4D ab03b067 PUD a5170067 PMD 0 [ 29.409727] Oops: 0002 [#1] PREEMPT SMP KASAN [ 29.414193] Modules linked in: [ 29.417364] CPU: 0 PID: 7960 Comm: syz-executor615 Not tainted 4.14.267-syzkaller #0 [ 29.425217] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.434635] task: ffff8880b280e000 task.stack: ffff888094608000 [ 29.440684] RIP: 0010:blk_mq_map_swqueue+0x253/0x990 [ 29.445761] RSP: 0018:ffff88809460fa80 EFLAGS: 00010297 [ 29.451099] RAX: ffff8880b280e000 RBX: ffff8880ae9030b0 RCX: 1ffff11015d0a3b9 [ 29.458343] RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff88cc7d68 [ 29.465585] RBP: 0000000000000001 R08: ffff8880ae851dc0 R09: 0000000000000000 [ 29.472826] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000001 [ 29.480070] R13: ffff8880ae84d5c0 R14: 0000000000000000 R15: dffffc0000000000 [ 29.487315] FS: 00005555573d7300(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 [ 29.495511] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.501365] CR2: 0000000000000120 CR3: 00000000b08f3000 CR4: 00000000003406f0 [ 29.508616] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.515879] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.523121] Call Trace: [ 29.525686] blk_mq_update_nr_hw_queues+0x246/0x3e0 [ 29.530678] nbd_start_device+0x1d7/0xca0 [ 29.534805] nbd_ioctl+0x3a8/0xa80 [ 29.538321] ? get_pid_task+0x91/0x130 [ 29.542181] ? nbd_disconnect_and_put+0x140/0x140 [ 29.546997] ? lock_downgrade+0x740/0x740 [ 29.551121] ? nbd_disconnect_and_put+0x140/0x140 [ 29.555940] blkdev_ioctl+0x540/0x1830 [ 29.559800] ? proc_fail_nth_write+0x7b/0x180 [ 29.564267] ? blkpg_ioctl+0x8d0/0x8d0 [ 29.568131] ? fsnotify+0x974/0x11b0 [ 29.571821] ? proc_tgid_io_accounting+0x7a0/0x7a0 [ 29.576725] ? debug_check_no_obj_freed+0x2c0/0x680 [ 29.581718] block_ioctl+0xd9/0x120 [ 29.585321] ? blkdev_fallocate+0x3a0/0x3a0 [ 29.589619] do_vfs_ioctl+0x75a/0xff0 [ 29.593396] ? ioctl_preallocate+0x1a0/0x1a0 [ 29.597783] ? vfs_write+0x319/0x4d0 [ 29.601468] ? SyS_write+0x14d/0x210 [ 29.605156] ? security_file_ioctl+0x83/0xb0 [ 29.609538] SyS_ioctl+0x7f/0xb0 [ 29.612881] ? do_vfs_ioctl+0xff0/0xff0 [ 29.616835] do_syscall_64+0x1d5/0x640 [ 29.620702] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 29.625870] RIP: 0033:0x7f09794d9dd9 [ 29.629552] RSP: 002b:00007ffcb0c44a48 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 29.637239] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f09794d9dd9 [ 29.644499] RDX: 0000000000000000 RSI: 000000000000ab03 RDI: 0000000000000007 [ 29.651744] RBP: 00007ffcb0c44a50 R08: 0000000000000002 R09: 00007f0979003631 [ 29.658987] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000008 [ 29.666232] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 29.673480] Code: 4d 8d 34 c8 4c 89 f1 48 c1 e9 03 42 80 3c 39 00 0f 85 37 05 00 00 83 fd 07 4d 8b 36 0f 87 42 04 00 00 48 89 04 24 e8 9d 59 4a fe 4d 0f ab a6 20 01 00 00 49 8d be 78 01 00 00 48 8b 04 24 48 [ 29.692542] RIP: blk_mq_map_swqueue+0x253/0x990 RSP: ffff88809460fa80 [ 29.699092] CR2: 0000000000000120 [ 29.702520] ---[ end trace 39015e6fdb16f65f ]--- [ 29.707249] Kernel panic - not syncing: Fatal exception [ 29.712765] Kernel Offset: disabled [ 29.716380] Rebooting in 86400 seconds..