[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.84' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 35.326059] FAULT_INJECTION: forcing a failure. [ 35.326059] name failslab, interval 1, probability 0, space 0, times 1 [ 35.337455] CPU: 1 PID: 8080 Comm: syz-executor219 Not tainted 4.19.211-syzkaller #0 [ 35.345442] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.354780] Call Trace: [ 35.357366] dump_stack+0x1fc/0x2ef [ 35.360981] should_fail.cold+0xa/0xf [ 35.364778] ? setup_fault_attr+0x200/0x200 [ 35.369207] ? lock_acquire+0x170/0x3c0 [ 35.373204] ? dev_uevent_filter+0xd0/0xd0 [ 35.377433] __should_failslab+0x115/0x180 [ 35.381661] should_failslab+0x5/0x10 [ 35.385456] kmem_cache_alloc_trace+0x284/0x380 [ 35.390116] ? dev_uevent_filter+0xd0/0xd0 [ 35.394341] kobject_uevent_env+0x236/0x1480 [ 35.398743] ? wait_for_completion_io+0x10/0x10 [ 35.403527] device_add+0xb2f/0x16d0 [ 35.407250] ? device_check_offline+0x280/0x280 [ 35.412053] ? kfree_const+0x51/0x60 [ 35.415762] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 35.420769] ? kfree+0x1e2/0x210 [ 35.424122] device_create_groups_vargs+0x1f4/0x270 [ 35.429134] device_create+0xdf/0x120 [ 35.432985] ? device_create_vargs+0x50/0x50 [ 35.437386] ? pointer+0x850/0x850 [ 35.440918] bdi_register_va.part.0+0x4c/0x750 [ 35.445487] bdi_register+0x12a/0x140 [ 35.449275] ? bdi_register_va+0x80/0x80 [ 35.453334] ? vsnprintf+0x2cc/0x14f0 [ 35.457120] bdi_register_owner+0x59/0x100 [ 35.461351] __device_add_disk+0xd58/0x10c0 [ 35.465668] ? sprintf+0xc0/0x100 [ 35.469104] ? blk_alloc_devt+0x2d0/0x2d0 [ 35.473234] ? __raw_spin_lock_init+0x28/0x100 [ 35.477803] ? __lockdep_init_map+0x100/0x5a0 [ 35.482283] loop_add+0x628/0x8a0 [ 35.485724] loop_control_ioctl+0x16c/0x480 [ 35.490027] ? loop_lookup+0x1d0/0x1d0 [ 35.493896] ? __vfs_write+0xff/0x770 [ 35.497680] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 35.502595] ? common_file_perm+0x4e5/0x850 [ 35.506898] ? loop_lookup+0x1d0/0x1d0 [ 35.510766] do_vfs_ioctl+0xcdb/0x12e0 [ 35.514639] ? vfs_write+0x3d7/0x540 [ 35.518336] ? ioctl_preallocate+0x200/0x200 [ 35.522728] ? lock_downgrade+0x720/0x720 [ 35.526868] ? check_preemption_disabled+0x41/0x280 [ 35.531894] ? vfs_write+0x393/0x540 [ 35.535591] ? ksys_write+0x1c8/0x2a0 [ 35.539375] ksys_ioctl+0x9b/0xc0 [ 35.542898] __x64_sys_ioctl+0x6f/0xb0 [ 35.546774] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 35.551512] do_syscall_64+0xf9/0x620 [ 35.555305] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 35.560487] RIP: 0033:0x7f5cf6f8d079 [ 35.564183] 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 [ 35.583070] RSP: 002b:00007fff7c97af88 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 35.590777] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f5cf6f8d079 [ 35.598026] RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003 [ 35.605277] RBP: 00007fff7c97afa0 R08: 0000000000000002 R09: 0000000000000001 [ 35.612619] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 35.619876] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 executing program [ 35.674637] FAULT_INJECTION: forcing a failure. [ 35.674637] name failslab, interval 1, probability 0, space 0, times 0 [ 35.685991] CPU: 0 PID: 8086 Comm: syz-executor219 Not tainted 4.19.211-syzkaller #0 [ 35.693862] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.703200] Call Trace: [ 35.705785] dump_stack+0x1fc/0x2ef [ 35.709397] should_fail.cold+0xa/0xf [ 35.713179] ? setup_fault_attr+0x200/0x200 [ 35.717481] ? lock_acquire+0x170/0x3c0 [ 35.721439] __should_failslab+0x115/0x180 [ 35.725658] should_failslab+0x5/0x10 [ 35.729451] kmem_cache_alloc+0x277/0x370 [ 35.733586] __kernfs_new_node+0xd2/0x680 [ 35.737715] ? kernfs_dop_revalidate+0x3a0/0x3a0 [ 35.742554] ? __mutex_unlock_slowpath+0xea/0x610 [ 35.747404] ? wait_for_completion_io+0x10/0x10 [ 35.752067] ? kernfs_next_descendant_post+0x19c/0x290 [ 35.757331] kernfs_new_node+0x92/0x120 [ 35.761297] __kernfs_create_file+0x51/0x340 [ 35.765693] sysfs_add_file_mode_ns+0x226/0x540 [ 35.770476] sysfs_merge_group+0x198/0x320 [ 35.774708] ? sysfs_update_group+0x30/0x30 [ 35.779027] ? kernfs_create_link+0x1b9/0x230 [ 35.783515] ? kernfs_put+0x31/0x50 [ 35.787147] dpm_sysfs_add+0x154/0x210 [ 35.791143] device_add+0xa43/0x16d0 [ 35.794846] ? device_check_offline+0x280/0x280 [ 35.799516] ? kfree_const+0x51/0x60 [ 35.803214] ? rcu_read_lock_sched_held+0x16c/0x1d0 [ 35.808212] ? kfree+0x1e2/0x210 [ 35.811568] device_create_groups_vargs+0x1f4/0x270 [ 35.816576] device_create+0xdf/0x120 [ 35.820364] ? device_create_vargs+0x50/0x50 [ 35.824759] ? pointer+0x850/0x850 [ 35.828288] bdi_register_va.part.0+0x4c/0x750 [ 35.832861] bdi_register+0x12a/0x140 [ 35.836646] ? bdi_register_va+0x80/0x80 [ 35.840695] ? vsnprintf+0x2cc/0x14f0 [ 35.844487] bdi_register_owner+0x59/0x100 [ 35.848710] __device_add_disk+0xd58/0x10c0 [ 35.853019] ? sprintf+0xc0/0x100 [ 35.856471] ? blk_alloc_devt+0x2d0/0x2d0 [ 35.860626] ? __raw_spin_lock_init+0x28/0x100 [ 35.865199] ? __lockdep_init_map+0x100/0x5a0 [ 35.869682] loop_add+0x628/0x8a0 [ 35.873118] loop_control_ioctl+0x16c/0x480 [ 35.877430] ? loop_lookup+0x1d0/0x1d0 [ 35.881307] ? __vfs_write+0xff/0x770 [ 35.885094] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 35.890010] ? common_file_perm+0x4e5/0x850 [ 35.894412] ? loop_lookup+0x1d0/0x1d0 [ 35.898289] do_vfs_ioctl+0xcdb/0x12e0 [ 35.902178] ? vfs_write+0x3d7/0x540 [ 35.905901] ? ioctl_preallocate+0x200/0x200 [ 35.910305] ? lock_downgrade+0x720/0x720 [ 35.914443] ? check_preemption_disabled+0x41/0x280 [ 35.919447] ? vfs_write+0x393/0x540 [ 35.923151] ? ksys_write+0x1c8/0x2a0 [ 35.926941] ksys_ioctl+0x9b/0xc0 [ 35.930383] __x64_sys_ioctl+0x6f/0xb0 [ 35.934256] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 35.938827] do_syscall_64+0xf9/0x620 [ 35.942623] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 35.947806] RIP: 0033:0x7f5cf6f8d079 [ 35.951509] 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 [ 35.970401] RSP: 002b:00007fff7c97af88 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 35.978102] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f5cf6f8d079 [ 35.985385] RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003 [ 35.992659] RBP: 00007fff7c97afa0 R08: 0000000000000002 R09: 0000000000000001 [ 35.999911] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 36.008465] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 36.023476] ------------[ cut here ]------------ [ 36.028573] WARNING: CPU: 0 PID: 8086 at block/genhd.c:719 __device_add_disk.cold+0x69/0x188 [ 36.037150] Kernel panic - not syncing: panic_on_warn set ... [ 36.037150] [ 36.044515] CPU: 0 PID: 8086 Comm: syz-executor219 Not tainted 4.19.211-syzkaller #0 [ 36.052389] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.061726] Call Trace: [ 36.064303] dump_stack+0x1fc/0x2ef [ 36.067918] panic+0x26a/0x50e [ 36.071183] ? __warn_printk+0xf3/0xf3 [ 36.075053] ? __device_add_disk.cold+0x69/0x188 [ 36.079797] ? __probe_kernel_read+0x130/0x1b0 [ 36.084365] ? __warn.cold+0x5/0x5a [ 36.087979] ? __warn+0xe4/0x200 [ 36.091328] ? __device_add_disk.cold+0x69/0x188 [ 36.096064] __warn.cold+0x20/0x5a [ 36.099585] ? __device_add_disk.cold+0x69/0x188 [ 36.104322] report_bug+0x262/0x2b0 [ 36.107932] do_error_trap+0x1d7/0x310 [ 36.111802] ? math_error+0x310/0x310 [ 36.115584] ? __irq_work_queue_local+0x101/0x160 [ 36.120411] ? irq_work_queue+0x29/0x80 [ 36.124374] ? error_entry+0x72/0xd0 [ 36.128079] ? trace_hardirqs_off_caller+0x6e/0x210 [ 36.133088] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 36.137927] invalid_op+0x14/0x20 [ 36.141369] RIP: 0010:__device_add_disk.cold+0x69/0x188 [ 36.146711] 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 [ 36.165591] RSP: 0018:ffff888093cdfb38 EFLAGS: 00010286 [ 36.170932] RAX: 0000000000000024 RBX: 0000000000000001 RCX: 0000000000000000 [ 36.178181] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed101279bf59 [ 36.185436] RBP: ffff8880975d32c0 R08: 0000000000000024 R09: 0000000000000000 [ 36.192684] R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880975d3350 [ 36.199934] R13: ffff8880975d3950 R14: 00000000fffffff4 R15: ffff8880975d32c4 [ 36.207368] ? vprintk_func+0x81/0x180 [ 36.211242] ? __device_add_disk.cold+0x69/0x188 [ 36.215982] ? sprintf+0xc0/0x100 [ 36.219416] ? blk_alloc_devt+0x2d0/0x2d0 [ 36.223547] ? __raw_spin_lock_init+0x28/0x100 [ 36.228111] ? __lockdep_init_map+0x100/0x5a0 [ 36.232588] loop_add+0x628/0x8a0 [ 36.236022] loop_control_ioctl+0x16c/0x480 [ 36.240343] ? loop_lookup+0x1d0/0x1d0 [ 36.244229] ? __vfs_write+0xff/0x770 [ 36.248010] ? proc_tgid_io_accounting+0x7f0/0x7f0 [ 36.252918] ? common_file_perm+0x4e5/0x850 [ 36.257224] ? loop_lookup+0x1d0/0x1d0 [ 36.261113] do_vfs_ioctl+0xcdb/0x12e0 [ 36.264982] ? vfs_write+0x3d7/0x540 [ 36.268676] ? ioctl_preallocate+0x200/0x200 [ 36.273066] ? lock_downgrade+0x720/0x720 [ 36.277195] ? check_preemption_disabled+0x41/0x280 [ 36.282206] ? vfs_write+0x393/0x540 [ 36.285908] ? ksys_write+0x1c8/0x2a0 [ 36.289690] ksys_ioctl+0x9b/0xc0 [ 36.293138] __x64_sys_ioctl+0x6f/0xb0 [ 36.297016] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 36.301577] do_syscall_64+0xf9/0x620 [ 36.305360] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 36.310554] RIP: 0033:0x7f5cf6f8d079 [ 36.314247] 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 [ 36.333215] RSP: 002b:00007fff7c97af88 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 36.340906] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f5cf6f8d079 [ 36.348156] RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003 [ 36.355410] RBP: 00007fff7c97afa0 R08: 0000000000000002 R09: 0000000000000001 [ 36.362669] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 36.369917] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 36.377558] Kernel Offset: disabled [ 36.381243] Rebooting in 86400 seconds..