Warning: Permanently added '10.128.0.166' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 35.115562] FAULT_INJECTION: forcing a failure. [ 35.115562] name failslab, interval 1, probability 0, space 0, times 1 [ 35.127438] CPU: 0 PID: 8108 Comm: syz-executor252 Not tainted 4.19.211-syzkaller #0 [ 35.135334] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 [ 35.144675] Call Trace: [ 35.147252] dump_stack+0x1fc/0x2ef [ 35.150878] should_fail.cold+0xa/0xf [ 35.154664] ? setup_fault_attr+0x200/0x200 [ 35.158967] ? lock_acquire+0x170/0x3c0 [ 35.162922] __should_failslab+0x115/0x180 [ 35.167136] should_failslab+0x5/0x10 [ 35.170920] kmem_cache_alloc+0x277/0x370 [ 35.175047] __kernfs_new_node+0xd2/0x680 [ 35.179175] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 35.183911] ? __mutex_unlock_slowpath+0xea/0x610 [ 35.188735] ? wait_for_completion_io+0x10/0x10 [ 35.193383] ? kernfs_next_descendant_post+0x19c/0x290 [ 35.198642] kernfs_new_node+0x92/0x120 [ 35.202608] __kernfs_create_file+0x51/0x340 [ 35.206999] sysfs_add_file_mode_ns+0x226/0x540 [ 35.211651] sysfs_merge_group+0x198/0x320 [ 35.215868] ? sysfs_update_group+0x30/0x30 [ 35.220171] ? kernfs_create_link+0x1b9/0x230 [ 35.224665] ? kernfs_put+0x31/0x50 [ 35.228291] dpm_sysfs_add+0x154/0x210 [ 35.232172] device_add+0xa43/0x16d0 [ 35.235882] ? device_check_offline+0x280/0x280 [ 35.240533] ? kfree_const+0x51/0x60 [ 35.244231] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 35.249229] ? kfree+0x1e2/0x210 [ 35.252577] device_create_groups_vargs+0x1f4/0x270 [ 35.257588] device_create+0xdf/0x120 [ 35.261371] ? device_create_vargs+0x50/0x50 [ 35.265766] ? pointer+0x850/0x850 [ 35.269299] bdi_register_va.part.0+0x4c/0x750 [ 35.273875] bdi_register+0x12a/0x140 [ 35.277681] ? bdi_register_va+0x80/0x80 [ 35.281735] ? vsnprintf+0x2cc/0x14f0 [ 35.285516] bdi_register_owner+0x59/0x100 [ 35.289742] __device_add_disk+0xd58/0x10c0 [ 35.294072] ? sprintf+0xc0/0x100 [ 35.297513] ? blk_alloc_devt+0x2d0/0x2d0 [ 35.301644] ? __raw_spin_lock_init+0x28/0x100 [ 35.306217] ? __lockdep_init_map+0x100/0x5a0 [ 35.310695] loop_add+0x628/0x8a0 [ 35.314144] loop_control_ioctl+0x16c/0x480 [ 35.318444] ? loop_lookup+0x1d0/0x1d0 [ 35.322310] ? __vfs_write+0xff/0x770 [ 35.326089] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 35.331001] ? common_file_perm+0x4e5/0x850 [ 35.335303] ? loop_lookup+0x1d0/0x1d0 [ 35.339172] do_vfs_ioctl+0xcdb/0x12e0 [ 35.343039] ? vfs_write+0x3d7/0x540 [ 35.346756] ? ioctl_preallocate+0x200/0x200 [ 35.351146] ? lock_downgrade+0x720/0x720 [ 35.355281] ? check_preemption_disabled+0x41/0x280 [ 35.360296] ? vfs_write+0x393/0x540 [ 35.363991] ? ksys_write+0x1c8/0x2a0 [ 35.367772] ksys_ioctl+0x9b/0xc0 [ 35.371205] __x64_sys_ioctl+0x6f/0xb0 [ 35.375074] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 35.379646] do_syscall_64+0xf9/0x620 [ 35.383454] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 35.388637] RIP: 0033:0x7f5d9a653079 [ 35.392343] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 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 c0 ff ff ff f7 d8 64 89 01 48 [ 35.411254] RSP: 002b:00007ffdeb563238 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 35.419045] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f5d9a653079 [ 35.426295] RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003 [ 35.433546] RBP: 00007ffdeb563250 R08: 0000000000000002 R09: 0000000000000001 [ 35.440795] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 35.448043] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 35.456405] ------------[ cut here ]------------ [ 35.461607] WARNING: CPU: 0 PID: 8108 at block/genhd.c:719 __device_add_disk.cold+0x69/0x188 [ 35.470186] Kernel panic - not syncing: panic_on_warn set ... [ 35.470186] [ 35.477560] CPU: 0 PID: 8108 Comm: syz-executor252 Not tainted 4.19.211-syzkaller #0 [ 35.485439] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 [ 35.494787] Call Trace: [ 35.497361] dump_stack+0x1fc/0x2ef [ 35.500995] panic+0x26a/0x50e [ 35.504168] ? __warn_printk+0xf3/0xf3 [ 35.508067] ? __device_add_disk.cold+0x69/0x188 [ 35.512812] ? __probe_kernel_read+0x130/0x1b0 [ 35.517378] ? __warn.cold+0x5/0x5a [ 35.520990] ? __warn+0xe4/0x200 [ 35.524339] ? __device_add_disk.cold+0x69/0x188 [ 35.529085] __warn.cold+0x20/0x5a [ 35.532622] ? io_schedule_timeout+0x140/0x140 [ 35.537183] ? __device_add_disk.cold+0x69/0x188 [ 35.541917] report_bug+0x262/0x2b0 [ 35.545526] do_error_trap+0x1d7/0x310 [ 35.549394] ? math_error+0x310/0x310 [ 35.553173] ? __irq_work_queue_local+0x101/0x160 [ 35.558173] ? irq_work_queue+0x29/0x80 [ 35.562174] ? error_entry+0x72/0xd0 [ 35.565878] ? trace_hardirqs_off_caller+0x6e/0x210 [ 35.570917] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.575745] invalid_op+0x14/0x20 [ 35.579177] RIP: 0010:__device_add_disk.cold+0x69/0x188 [ 35.584523] Code: 02 84 c0 74 08 3c 03 0f 8e a8 00 00 00 44 8b a5 f0 05 00 00 e9 67 ad 6a fb e8 05 45 66 f9 48 c7 c7 60 75 b2 88 e8 64 76 f7 ff <0f> 0b e9 8f b9 6a fb e8 ed 44 66 f9 48 c7 c7 60 75 b2 88 e8 4c 76 [ 35.603411] RSP: 0018:ffff888092767b38 EFLAGS: 00010286 [ 35.608872] RAX: 0000000000000024 RBX: 0000000000000001 RCX: 0000000000000000 [ 35.616127] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed10124ecf59 [ 35.623384] RBP: ffff888096a81580 R08: 0000000000000024 R09: 0000000000000000 [ 35.630636] R10: 0000000000000005 R11: 0000000000000000 R12: ffff888096a81610 [ 35.638097] R13: ffff888096a81c10 R14: 00000000fffffff4 R15: ffff888096a81584 [ 35.645358] ? vprintk_func+0x81/0x180 [ 35.649231] ? __device_add_disk.cold+0x69/0x188 [ 35.653973] ? sprintf+0xc0/0x100 [ 35.657492] ? blk_alloc_devt+0x2d0/0x2d0 [ 35.661621] ? __raw_spin_lock_init+0x28/0x100 [ 35.666180] ? __lockdep_init_map+0x100/0x5a0 [ 35.670657] loop_add+0x628/0x8a0 [ 35.674092] loop_control_ioctl+0x16c/0x480 [ 35.678391] ? loop_lookup+0x1d0/0x1d0 [ 35.682262] ? __vfs_write+0xff/0x770 [ 35.686042] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 35.690951] ? common_file_perm+0x4e5/0x850 [ 35.695255] ? loop_lookup+0x1d0/0x1d0 [ 35.699135] do_vfs_ioctl+0xcdb/0x12e0 [ 35.703001] ? vfs_write+0x3d7/0x540 [ 35.706696] ? ioctl_preallocate+0x200/0x200 [ 35.711084] ? lock_downgrade+0x720/0x720 [ 35.715212] ? check_preemption_disabled+0x41/0x280 [ 35.720209] ? vfs_write+0x393/0x540 [ 35.723926] ? ksys_write+0x1c8/0x2a0 [ 35.727708] ksys_ioctl+0x9b/0xc0 [ 35.731143] __x64_sys_ioctl+0x6f/0xb0 [ 35.735030] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 35.739589] do_syscall_64+0xf9/0x620 [ 35.743380] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 35.748561] RIP: 0033:0x7f5d9a653079 [ 35.752253] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 14 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 c0 ff ff ff f7 d8 64 89 01 48 [ 35.771133] RSP: 002b:00007ffdeb563238 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 35.778841] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f5d9a653079 [ 35.786090] RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003 [ 35.793351] RBP: 00007ffdeb563250 R08: 0000000000000002 R09: 0000000000000001 [ 35.800601] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 35.807860] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 35.815486] Kernel Offset: disabled [ 35.819178] Rebooting in 86400 seconds..