[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.50' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 26.489891] FAULT_INJECTION: forcing a failure. [ 26.489891] name failslab, interval 1, probability 0, space 0, times 1 [ 26.501258] CPU: 0 PID: 7956 Comm: syz-executor460 Not tainted 4.14.280-syzkaller #0 [ 26.509124] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.518452] Call Trace: [ 26.521024] dump_stack+0x1b2/0x281 [ 26.524629] should_fail.cold+0x10a/0x149 [ 26.528763] should_failslab+0xd6/0x130 [ 26.532712] __kmalloc+0x2c1/0x400 [ 26.536226] ? kobject_get_path+0xb5/0x230 [ 26.540440] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 26.545879] kobject_get_path+0xb5/0x230 [ 26.549921] kobject_uevent_env+0x230/0xf30 [ 26.554220] ? wait_for_completion_io+0x10/0x10 [ 26.558867] device_add+0xa47/0x15c0 [ 26.562563] ? device_is_dependent+0x2a0/0x2a0 [ 26.567120] ? kfree+0x1f0/0x250 [ 26.570464] device_create_groups_vargs+0x1dc/0x250 [ 26.575456] device_create_vargs+0x3a/0x50 [ 26.579667] bdi_register_va.part.0+0x35/0x650 [ 26.584224] bdi_register+0x101/0x110 [ 26.588001] ? bdi_register_va+0x80/0x80 [ 26.592040] ? vsnprintf+0x260/0x1340 [ 26.595818] bdi_register_owner+0x59/0xf0 [ 26.599942] device_add_disk+0x5bb/0xdc0 [ 26.603981] ? sprintf+0xa7/0xd0 [ 26.607321] ? blk_alloc_devt+0x310/0x310 [ 26.611445] ? __lockdep_init_map+0x100/0x560 [ 26.615916] ? __lockdep_init_map+0x100/0x560 [ 26.620393] loop_add+0x615/0x830 [ 26.623822] ? loop_queue_rq+0x280/0x280 [ 26.627858] ? loop_queue_work+0x21e0/0x21e0 [ 26.632243] ? do_fault_around+0x35e/0x620 [ 26.636455] loop_control_ioctl+0x11a/0x3f0 [ 26.640753] ? loop_lookup+0x190/0x190 [ 26.644618] ? loop_lookup+0x190/0x190 [ 26.648485] do_vfs_ioctl+0x75a/0xff0 [ 26.652260] ? ioctl_preallocate+0x1a0/0x1a0 [ 26.656644] ? vfs_write+0x319/0x4d0 [ 26.660335] ? SyS_write+0x14d/0x210 [ 26.664023] ? security_file_ioctl+0x83/0xb0 [ 26.668404] SyS_ioctl+0x7f/0xb0 [ 26.671752] ? do_vfs_ioctl+0xff0/0xff0 [ 26.675702] do_syscall_64+0x1d5/0x640 [ 26.679566] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 26.684729] RIP: 0033:0x7f6eddf420c9 executing program [ 26.688415] RSP: 002b:00007ffd57253598 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 26.696099] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f6eddf420c9 [ 26.703343] RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003 [ 26.710587] RBP: 00007ffd572535b0 R08: 0000000000000002 R09: 0000000000000001 [ 26.717832] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 [ 26.725074] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 26.793816] FAULT_INJECTION: forcing a failure. [ 26.793816] name failslab, interval 1, probability 0, space 0, times 0 [ 26.805077] CPU: 1 PID: 7962 Comm: syz-executor460 Not tainted 4.14.280-syzkaller #0 [ 26.812941] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.822276] Call Trace: [ 26.824847] dump_stack+0x1b2/0x281 [ 26.828461] should_fail.cold+0x10a/0x149 [ 26.832597] should_failslab+0xd6/0x130 [ 26.836558] kmem_cache_alloc_trace+0x29a/0x3d0 [ 26.841212] ? dev_uevent_filter+0xd0/0xd0 [ 26.845427] kobject_uevent_env+0x20c/0xf30 [ 26.849755] ? wait_for_completion_io+0x10/0x10 [ 26.854405] device_add+0xa47/0x15c0 [ 26.858099] ? device_is_dependent+0x2a0/0x2a0 [ 26.862658] ? kfree+0x1f0/0x250 [ 26.866010] device_create_groups_vargs+0x1dc/0x250 [ 26.871005] device_create_vargs+0x3a/0x50 [ 26.875217] bdi_register_va.part.0+0x35/0x650 [ 26.879776] bdi_register+0x101/0x110 [ 26.883553] ? bdi_register_va+0x80/0x80 [ 26.887589] ? vsnprintf+0x260/0x1340 [ 26.891366] bdi_register_owner+0x59/0xf0 [ 26.895501] device_add_disk+0x5bb/0xdc0 [ 26.899546] ? sprintf+0xa7/0xd0 [ 26.902888] ? blk_alloc_devt+0x310/0x310 [ 26.907017] ? __lockdep_init_map+0x100/0x560 [ 26.911489] ? __lockdep_init_map+0x100/0x560 [ 26.915961] loop_add+0x615/0x830 [ 26.919392] ? loop_queue_rq+0x280/0x280 [ 26.923430] ? loop_queue_work+0x21e0/0x21e0 [ 26.927814] ? do_fault_around+0x35e/0x620 [ 26.932026] loop_control_ioctl+0x11a/0x3f0 [ 26.936324] ? loop_lookup+0x190/0x190 [ 26.940187] ? loop_lookup+0x190/0x190 [ 26.944051] do_vfs_ioctl+0x75a/0xff0 [ 26.947829] ? ioctl_preallocate+0x1a0/0x1a0 [ 26.952216] ? vfs_write+0x319/0x4d0 [ 26.955906] ? SyS_write+0x14d/0x210 [ 26.959596] ? security_file_ioctl+0x83/0xb0 [ 26.963985] SyS_ioctl+0x7f/0xb0 [ 26.967327] ? do_vfs_ioctl+0xff0/0xff0 [ 26.971280] do_syscall_64+0x1d5/0x640 [ 26.975144] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 26.980309] RIP: 0033:0x7f6eddf420c9 [ 26.984000] RSP: 002b:00007ffd57253598 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 executing program executing program [ 26.991691] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f6eddf420c9 [ 26.998936] RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003 [ 27.006185] RBP: 00007ffd572535b0 R08: 0000000000000002 R09: 0000000000000001 [ 27.013435] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 [ 27.020681] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 27.093648] FAULT_INJECTION: forcing a failure. [ 27.093648] name failslab, interval 1, probability 0, space 0, times 0 [ 27.105467] CPU: 1 PID: 7969 Comm: syz-executor460 Not tainted 4.14.280-syzkaller #0 [ 27.113348] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.122687] Call Trace: [ 27.125258] dump_stack+0x1b2/0x281 [ 27.128863] should_fail.cold+0x10a/0x149 [ 27.133010] should_failslab+0xd6/0x130 [ 27.136967] kmem_cache_alloc_node+0x263/0x410 [ 27.141545] __alloc_skb+0x5c/0x510 [ 27.145160] kobject_uevent_env+0x882/0xf30 [ 27.149468] device_add+0xa47/0x15c0 [ 27.153159] ? device_is_dependent+0x2a0/0x2a0 [ 27.157716] ? kfree+0x1f0/0x250 [ 27.161060] device_create_groups_vargs+0x1dc/0x250 [ 27.166053] device_create_vargs+0x3a/0x50 [ 27.170271] bdi_register_va.part.0+0x35/0x650 [ 27.174829] bdi_register+0x101/0x110 [ 27.178604] ? bdi_register_va+0x80/0x80 [ 27.182643] ? vsnprintf+0x260/0x1340 [ 27.186419] bdi_register_owner+0x59/0xf0 [ 27.190544] device_add_disk+0x5bb/0xdc0 [ 27.194580] ? sprintf+0xa7/0xd0 [ 27.197923] ? blk_alloc_devt+0x310/0x310 [ 27.202055] ? __lockdep_init_map+0x100/0x560 [ 27.206525] ? __lockdep_init_map+0x100/0x560 [ 27.211002] loop_add+0x615/0x830 [ 27.214438] ? loop_queue_rq+0x280/0x280 [ 27.218472] ? loop_queue_work+0x21e0/0x21e0 [ 27.222859] ? do_fault_around+0x35e/0x620 [ 27.227070] loop_control_ioctl+0x11a/0x3f0 [ 27.231368] ? loop_lookup+0x190/0x190 [ 27.235238] ? loop_lookup+0x190/0x190 [ 27.239106] do_vfs_ioctl+0x75a/0xff0 [ 27.242885] ? ioctl_preallocate+0x1a0/0x1a0 [ 27.247271] ? vfs_write+0x319/0x4d0 [ 27.250961] ? SyS_write+0x14d/0x210 [ 27.254649] ? security_file_ioctl+0x83/0xb0 [ 27.259035] SyS_ioctl+0x7f/0xb0 [ 27.262377] ? do_vfs_ioctl+0xff0/0xff0 [ 27.266331] do_syscall_64+0x1d5/0x640 [ 27.270205] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 27.275370] RIP: 0033:0x7f6eddf420c9 [ 27.279057] RSP: 002b:00007ffd57253598 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 27.286738] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f6eddf420c9 executing program [ 27.293981] RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003 [ 27.301231] RBP: 00007ffd572535b0 R08: 0000000000000002 R09: 0000000000000001 [ 27.308473] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 [ 27.315717] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 27.373249] FAULT_INJECTION: forcing a failure. [ 27.373249] name failslab, interval 1, probability 0, space 0, times 0 [ 27.385094] CPU: 0 PID: 7977 Comm: syz-executor460 Not tainted 4.14.280-syzkaller #0 [ 27.392963] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.402291] Call Trace: [ 27.404858] dump_stack+0x1b2/0x281 [ 27.408463] should_fail.cold+0x10a/0x149 [ 27.412591] should_failslab+0xd6/0x130 [ 27.416540] kmem_cache_alloc_node+0x263/0x410 [ 27.421101] __alloc_skb+0x5c/0x510 [ 27.424710] kobject_uevent_env+0x882/0xf30 [ 27.429008] device_add+0xa47/0x15c0 [ 27.432701] ? device_is_dependent+0x2a0/0x2a0 [ 27.437258] ? kfree+0x1f0/0x250 [ 27.440599] device_create_groups_vargs+0x1dc/0x250 [ 27.445591] device_create_vargs+0x3a/0x50 [ 27.449804] bdi_register_va.part.0+0x35/0x650 [ 27.454361] bdi_register+0x101/0x110 [ 27.458138] ? bdi_register_va+0x80/0x80 [ 27.462176] ? vsnprintf+0x260/0x1340 [ 27.465952] bdi_register_owner+0x59/0xf0 [ 27.470074] device_add_disk+0x5bb/0xdc0 [ 27.474110] ? sprintf+0xa7/0xd0 [ 27.477450] ? blk_alloc_devt+0x310/0x310 [ 27.481574] ? __lockdep_init_map+0x100/0x560 [ 27.486047] ? __lockdep_init_map+0x100/0x560 [ 27.490518] loop_add+0x615/0x830 [ 27.493946] ? loop_queue_rq+0x280/0x280 [ 27.497979] ? loop_queue_work+0x21e0/0x21e0 [ 27.502362] ? do_fault_around+0x35e/0x620 [ 27.506572] loop_control_ioctl+0x11a/0x3f0 [ 27.510866] ? loop_lookup+0x190/0x190 [ 27.514729] ? loop_lookup+0x190/0x190 [ 27.518593] do_vfs_ioctl+0x75a/0xff0 [ 27.522371] ? ioctl_preallocate+0x1a0/0x1a0 [ 27.526755] ? vfs_write+0x319/0x4d0 [ 27.530445] ? SyS_write+0x14d/0x210 [ 27.534132] ? security_file_ioctl+0x83/0xb0 [ 27.538512] SyS_ioctl+0x7f/0xb0 [ 27.541853] ? do_vfs_ioctl+0xff0/0xff0 [ 27.545802] do_syscall_64+0x1d5/0x640 [ 27.549669] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 27.554835] RIP: 0033:0x7f6eddf420c9 [ 27.558524] RSP: 002b:00007ffd57253598 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 27.566204] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f6eddf420c9 executing program [ 27.573449] RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003 [ 27.580697] RBP: 00007ffd572535b0 R08: 0000000000000002 R09: 0000000000000001 [ 27.587941] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 [ 27.595187] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 27.662756] FAULT_INJECTION: forcing a failure. [ 27.662756] name failslab, interval 1, probability 0, space 0, times 0 [ 27.673988] CPU: 1 PID: 7984 Comm: syz-executor460 Not tainted 4.14.280-syzkaller #0 [ 27.681843] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.691168] Call Trace: [ 27.693738] dump_stack+0x1b2/0x281 [ 27.697342] should_fail.cold+0x10a/0x149 [ 27.701468] should_failslab+0xd6/0x130 [ 27.705419] __kmalloc+0x2c1/0x400 [ 27.708934] ? kobject_get_path+0xb5/0x230 [ 27.713152] ? rcu_lockdep_current_cpu_online+0xed/0x140 [ 27.718584] kobject_get_path+0xb5/0x230 [ 27.722623] kobject_uevent_env+0x230/0xf30 [ 27.726919] ? wait_for_completion_io+0x10/0x10 [ 27.731567] device_add+0xa47/0x15c0 [ 27.735259] ? device_is_dependent+0x2a0/0x2a0 [ 27.739815] ? kfree+0x1f0/0x250 [ 27.743157] device_create_groups_vargs+0x1dc/0x250 [ 27.748147] device_create_vargs+0x3a/0x50 [ 27.752360] bdi_register_va.part.0+0x35/0x650 [ 27.756918] bdi_register+0x101/0x110 [ 27.760695] ? bdi_register_va+0x80/0x80 [ 27.764733] ? vsnprintf+0x260/0x1340 [ 27.768514] bdi_register_owner+0x59/0xf0 [ 27.772637] device_add_disk+0x5bb/0xdc0 [ 27.776674] ? sprintf+0xa7/0xd0 [ 27.780013] ? blk_alloc_devt+0x310/0x310 [ 27.784136] ? __lockdep_init_map+0x100/0x560 [ 27.788606] ? __lockdep_init_map+0x100/0x560 [ 27.793077] loop_add+0x615/0x830 [ 27.796507] ? loop_queue_rq+0x280/0x280 [ 27.800543] ? loop_queue_work+0x21e0/0x21e0 [ 27.804925] ? do_fault_around+0x35e/0x620 [ 27.809138] loop_control_ioctl+0x11a/0x3f0 [ 27.813435] ? loop_lookup+0x190/0x190 [ 27.817305] ? loop_lookup+0x190/0x190 [ 27.821167] do_vfs_ioctl+0x75a/0xff0 [ 27.824943] ? ioctl_preallocate+0x1a0/0x1a0 [ 27.829326] ? vfs_write+0x319/0x4d0 [ 27.833014] ? SyS_write+0x14d/0x210 [ 27.836716] ? security_file_ioctl+0x83/0xb0 [ 27.841105] SyS_ioctl+0x7f/0xb0 [ 27.844449] ? do_vfs_ioctl+0xff0/0xff0 [ 27.848405] do_syscall_64+0x1d5/0x640 [ 27.852282] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 27.857457] RIP: 0033:0x7f6eddf420c9 executing program executing program [ 27.861148] RSP: 002b:00007ffd57253598 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 27.868958] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f6eddf420c9 [ 27.876210] RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003 [ 27.883457] RBP: 00007ffd572535b0 R08: 0000000000000002 R09: 0000000000000001 [ 27.890701] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 [ 27.897948] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 27.962047] FAULT_INJECTION: forcing a failure. [ 27.962047] name failslab, interval 1, probability 0, space 0, times 0 [ 27.973352] CPU: 1 PID: 7991 Comm: syz-executor460 Not tainted 4.14.280-syzkaller #0 [ 27.981225] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.990557] Call Trace: [ 27.993129] dump_stack+0x1b2/0x281 [ 27.996735] should_fail.cold+0x10a/0x149 [ 28.000863] should_failslab+0xd6/0x130 [ 28.004813] kmem_cache_alloc_trace+0x29a/0x3d0 [ 28.009457] ? dev_uevent_filter+0xd0/0xd0 [ 28.013667] kobject_uevent_env+0x20c/0xf30 [ 28.017968] ? wait_for_completion_io+0x10/0x10 [ 28.022613] device_add+0xa47/0x15c0 [ 28.026303] ? device_is_dependent+0x2a0/0x2a0 [ 28.030993] ? kfree+0x1f0/0x250 [ 28.034341] device_create_groups_vargs+0x1dc/0x250 [ 28.039336] device_create_vargs+0x3a/0x50 [ 28.043553] bdi_register_va.part.0+0x35/0x650 [ 28.048113] bdi_register+0x101/0x110 [ 28.051891] ? bdi_register_va+0x80/0x80 [ 28.055931] ? vsnprintf+0x260/0x1340 [ 28.059711] bdi_register_owner+0x59/0xf0 [ 28.063834] device_add_disk+0x5bb/0xdc0 [ 28.067876] ? sprintf+0xa7/0xd0 [ 28.071218] ? blk_alloc_devt+0x310/0x310 [ 28.075341] ? __lockdep_init_map+0x100/0x560 [ 28.079831] ? __lockdep_init_map+0x100/0x560 [ 28.084316] loop_add+0x615/0x830 [ 28.087754] ? loop_queue_rq+0x280/0x280 [ 28.091823] ? loop_queue_work+0x21e0/0x21e0 [ 28.096240] ? do_fault_around+0x35e/0x620 [ 28.100459] loop_control_ioctl+0x11a/0x3f0 [ 28.104778] ? loop_lookup+0x190/0x190 [ 28.108655] ? loop_lookup+0x190/0x190 [ 28.112532] do_vfs_ioctl+0x75a/0xff0 [ 28.116314] ? ioctl_preallocate+0x1a0/0x1a0 [ 28.120706] ? vfs_write+0x319/0x4d0 [ 28.124401] ? SyS_write+0x14d/0x210 [ 28.128096] ? security_file_ioctl+0x83/0xb0 [ 28.132488] SyS_ioctl+0x7f/0xb0 [ 28.135832] ? do_vfs_ioctl+0xff0/0xff0 [ 28.139787] do_syscall_64+0x1d5/0x640 [ 28.143654] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.148820] RIP: 0033:0x7f6eddf420c9 [ 28.152505] RSP: 002b:00007ffd57253598 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 executing program executing program [ 28.160187] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f6eddf420c9 [ 28.167431] RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003 [ 28.174677] RBP: 00007ffd572535b0 R08: 0000000000000002 R09: 0000000000000001 [ 28.181922] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 [ 28.189166] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 28.242916] FAULT_INJECTION: forcing a failure. [ 28.242916] name failslab, interval 1, probability 0, space 0, times 0 [ 28.254224] CPU: 1 PID: 7999 Comm: syz-executor460 Not tainted 4.14.280-syzkaller #0 [ 28.262098] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.271429] Call Trace: [ 28.274003] dump_stack+0x1b2/0x281 [ 28.277614] should_fail.cold+0x10a/0x149 [ 28.281742] should_failslab+0xd6/0x130 [ 28.285707] kmem_cache_alloc+0x28e/0x3c0 [ 28.289842] __kernfs_new_node+0x6f/0x470 [ 28.293973] kernfs_new_node+0x7b/0xe0 [ 28.297848] __kernfs_create_file+0x3d/0x320 [ 28.302234] sysfs_add_file_mode_ns+0x1e1/0x450 [ 28.306885] sysfs_merge_group+0xdc/0x200 [ 28.311018] dpm_sysfs_add+0x122/0x1c0 [ 28.314884] device_add+0x977/0x15c0 [ 28.318593] ? device_is_dependent+0x2a0/0x2a0 [ 28.323160] ? kfree+0x1f0/0x250 [ 28.326522] device_create_groups_vargs+0x1dc/0x250 [ 28.331521] device_create_vargs+0x3a/0x50 [ 28.335737] bdi_register_va.part.0+0x35/0x650 [ 28.340297] bdi_register+0x101/0x110 [ 28.344073] ? bdi_register_va+0x80/0x80 [ 28.348113] ? vsnprintf+0x260/0x1340 [ 28.351892] bdi_register_owner+0x59/0xf0 [ 28.356015] device_add_disk+0x5bb/0xdc0 [ 28.360052] ? sprintf+0xa7/0xd0 [ 28.363393] ? blk_alloc_devt+0x310/0x310 [ 28.367517] ? __lockdep_init_map+0x100/0x560 [ 28.371990] ? __lockdep_init_map+0x100/0x560 [ 28.376468] loop_add+0x615/0x830 [ 28.379900] ? loop_queue_rq+0x280/0x280 [ 28.383934] ? loop_queue_work+0x21e0/0x21e0 [ 28.388319] ? do_fault_around+0x35e/0x620 [ 28.392529] loop_control_ioctl+0x11a/0x3f0 [ 28.396823] ? loop_lookup+0x190/0x190 [ 28.400687] ? loop_lookup+0x190/0x190 [ 28.404550] do_vfs_ioctl+0x75a/0xff0 [ 28.408326] ? ioctl_preallocate+0x1a0/0x1a0 [ 28.412710] ? vfs_write+0x319/0x4d0 [ 28.416397] ? SyS_write+0x14d/0x210 [ 28.420092] ? security_file_ioctl+0x83/0xb0 [ 28.424475] SyS_ioctl+0x7f/0xb0 [ 28.427819] ? do_vfs_ioctl+0xff0/0xff0 [ 28.431771] do_syscall_64+0x1d5/0x640 [ 28.435637] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.440801] RIP: 0033:0x7f6eddf420c9 [ 28.444485] RSP: 002b:00007ffd57253598 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 28.452169] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f6eddf420c9 [ 28.459413] RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003 [ 28.466657] RBP: 00007ffd572535b0 R08: 0000000000000002 R09: 0000000000000001 [ 28.473902] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 [ 28.481145] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 28.505164] kasan: CONFIG_KASAN_INLINE enabled [ 28.509976] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 28.517436] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 28.523646] Modules linked in: [ 28.526815] CPU: 1 PID: 7999 Comm: syz-executor460 Not tainted 4.14.280-syzkaller #0 [ 28.534665] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.543993] task: ffff888097f08540 task.stack: ffff888095750000 [ 28.550028] RIP: 0010:sysfs_do_create_link_sd+0x56/0x120 [ 28.555450] RSP: 0018:ffff888095757b48 EFLAGS: 00010202 [ 28.560795] RAX: dffffc0000000000 RBX: 0000000000000010 RCX: 0000000000001c9a [ 28.568041] RDX: 0000000000000008 RSI: 0000000000000001 RDI: 0000000000000040 [ 28.575285] RBP: ffffffff87cbc3e0 R08: ffffffff8b9b3f90 R09: 00000000000400c7 [ 28.582530] R10: ffff888097f08df0 R11: ffff888097f08540 R12: ffff8880a492b540 [ 28.589772] R13: ffffffff87cbc3e0 R14: 0000000000000001 R15: ffff88809576e95c [ 28.597017] FS: 000055555692f300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 28.605218] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.611074] CR2: 000055d3a71518f8 CR3: 00000000a4822000 CR4: 00000000003406e0 [ 28.618318] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.625562] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.632811] Call Trace: [ 28.635379] sysfs_create_link+0x5f/0xc0 [ 28.639414] device_add_disk+0x9f8/0xdc0 [ 28.643455] ? sprintf+0xa7/0xd0 [ 28.646795] ? blk_alloc_devt+0x310/0x310 [ 28.650920] ? __lockdep_init_map+0x100/0x560 [ 28.655388] ? __lockdep_init_map+0x100/0x560 [ 28.659858] loop_add+0x615/0x830 [ 28.663287] ? loop_queue_rq+0x280/0x280 [ 28.667340] ? loop_queue_work+0x21e0/0x21e0 [ 28.671723] ? do_fault_around+0x35e/0x620 [ 28.675931] loop_control_ioctl+0x11a/0x3f0 [ 28.680226] ? loop_lookup+0x190/0x190 [ 28.684087] ? loop_lookup+0x190/0x190 [ 28.687948] do_vfs_ioctl+0x75a/0xff0 [ 28.691723] ? ioctl_preallocate+0x1a0/0x1a0 [ 28.696104] ? vfs_write+0x319/0x4d0 [ 28.699789] ? SyS_write+0x14d/0x210 [ 28.703475] ? security_file_ioctl+0x83/0xb0 [ 28.707856] SyS_ioctl+0x7f/0xb0 [ 28.711194] ? do_vfs_ioctl+0xff0/0xff0 [ 28.715143] do_syscall_64+0x1d5/0x640 [ 28.719005] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 28.724167] RIP: 0033:0x7f6eddf420c9 [ 28.727851] RSP: 002b:00007ffd57253598 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 28.735532] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007f6eddf420c9 [ 28.742774] RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003 [ 28.750016] RBP: 00007ffd572535b0 R08: 0000000000000002 R09: 0000000000000001 [ 28.757261] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005 [ 28.764525] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 28.771770] Code: 84 a1 00 00 00 e8 eb 63 b1 ff 48 c7 c7 40 ce 04 89 e8 ff 90 80 05 48 8d 7b 30 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 a7 00 00 00 4c 8b 6b 30 4d 85 ed 74 4f e8 b2 [ 28.790832] RIP: sysfs_do_create_link_sd+0x56/0x120 RSP: ffff888095757b48 [ 28.797794] ---[ end trace 1cada1a88fe8097d ]--- [ 28.802537] Kernel panic - not syncing: Fatal exception [ 28.808049] Kernel Offset: disabled [ 28.811658] Rebooting in 86400 seconds..