Warning: Permanently added '10.128.1.175' (ECDSA) to the list of known hosts. executing program executing program [ 28.892315] FAULT_INJECTION: forcing a failure. [ 28.892315] name failslab, interval 1, probability 0, space 0, times 1 [ 28.903761] CPU: 1 PID: 7980 Comm: syz-executor421 Not tainted 4.14.304-syzkaller #0 [ 28.911629] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 28.920965] Call Trace: [ 28.923537] dump_stack+0x1b2/0x281 [ 28.927154] should_fail.cold+0x10a/0x149 [ 28.931293] should_failslab+0xd6/0x130 [ 28.935248] kmem_cache_alloc+0x28e/0x3c0 [ 28.939375] __kernfs_new_node+0x6f/0x470 [ 28.943503] kernfs_new_node+0x7b/0xe0 [ 28.947384] __kernfs_create_file+0x3d/0x320 [ 28.951791] sysfs_add_file_mode_ns+0x1e1/0x450 [ 28.956461] sysfs_merge_group+0xdc/0x200 [ 28.960587] dpm_sysfs_add+0x122/0x1c0 [ 28.964450] device_add+0x977/0x15c0 [ 28.968145] ? device_is_dependent+0x2a0/0x2a0 [ 28.972713] ? kfree+0x1f0/0x250 [ 28.976054] device_create_groups_vargs+0x1dc/0x250 [ 28.981048] device_create_vargs+0x3a/0x50 [ 28.985260] bdi_register_va.part.0+0x35/0x650 [ 28.989816] bdi_register+0x101/0x110 [ 28.993597] ? bdi_register_va+0x80/0x80 [ 28.997640] ? vsnprintf+0x260/0x1340 [ 29.001416] bdi_register_owner+0x59/0xf0 [ 29.005559] device_add_disk+0x5bb/0xdc0 [ 29.009599] ? sprintf+0xa7/0xd0 [ 29.012951] ? blk_alloc_devt+0x310/0x310 [ 29.017075] ? __lockdep_init_map+0x100/0x560 [ 29.021552] ? __lockdep_init_map+0x100/0x560 [ 29.026048] loop_add+0x615/0x830 [ 29.029480] ? loop_queue_rq+0x280/0x280 [ 29.033516] ? loop_queue_work+0x21e0/0x21e0 [ 29.037928] ? do_fault_around+0x35e/0x620 [ 29.042145] loop_control_ioctl+0x11a/0x3f0 [ 29.046449] ? loop_lookup+0x190/0x190 [ 29.050349] ? loop_lookup+0x190/0x190 [ 29.054215] do_vfs_ioctl+0x75a/0xff0 [ 29.057997] ? ioctl_preallocate+0x1a0/0x1a0 [ 29.062394] ? vfs_write+0x319/0x4d0 [ 29.066110] ? SyS_write+0x14d/0x210 [ 29.069801] ? security_file_ioctl+0x83/0xb0 [ 29.074184] SyS_ioctl+0x7f/0xb0 [ 29.077544] ? do_vfs_ioctl+0xff0/0xff0 [ 29.081584] do_syscall_64+0x1d5/0x640 [ 29.085462] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 29.090652] RIP: 0033:0x7fcec3f70089 [ 29.094335] RSP: 002b:00007ffdb7d08248 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 29.102016] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fcec3f70089 [ 29.109277] RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003 [ 29.116529] RBP: 00007ffdb7d08260 R08: 0000000000000002 R09: 0000000000000001 [ 29.123775] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 29.131033] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 29.143247] kasan: CONFIG_KASAN_INLINE enabled [ 29.148093] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 29.155514] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 29.161737] Modules linked in: [ 29.164921] CPU: 1 PID: 7980 Comm: syz-executor421 Not tainted 4.14.304-syzkaller #0 [ 29.172788] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 [ 29.182129] task: ffff8880b32940c0 task.stack: ffff888098320000 [ 29.188166] RIP: 0010:sysfs_do_create_link_sd+0x56/0x120 [ 29.193589] RSP: 0018:ffff888098327b48 EFLAGS: 00010202 [ 29.198928] RAX: dffffc0000000000 RBX: 0000000000000010 RCX: 0000000000007f68 [ 29.206186] RDX: 0000000000000008 RSI: 0000000000000001 RDI: 0000000000000040 [ 29.213430] RBP: ffffffff87cbd760 R08: ffffffff8b9e4640 R09: 00000000000400ca [ 29.220677] R10: ffff8880b3294970 R11: ffff8880b32940c0 R12: ffff8880af3c81c0 [ 29.227937] R13: ffffffff87cbd760 R14: 0000000000000001 R15: ffff888095a64b5c [ 29.235181] FS: 0000555555cc7300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 29.243385] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.249240] CR2: 00007fcec3fc8144 CR3: 00000000a04bc000 CR4: 00000000003406e0 [ 29.256485] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.263818] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.271062] Call Trace: [ 29.273632] sysfs_create_link+0x5f/0xc0 [ 29.277668] device_add_disk+0x9f8/0xdc0 [ 29.281706] ? sprintf+0xa7/0xd0 [ 29.285043] ? blk_alloc_devt+0x310/0x310 [ 29.289164] ? __lockdep_init_map+0x100/0x560 [ 29.293632] ? __lockdep_init_map+0x100/0x560 [ 29.298104] loop_add+0x615/0x830 [ 29.301532] ? loop_queue_rq+0x280/0x280 [ 29.305577] ? loop_queue_work+0x21e0/0x21e0 [ 29.309957] ? do_fault_around+0x35e/0x620 [ 29.314165] loop_control_ioctl+0x11a/0x3f0 [ 29.318463] ? loop_lookup+0x190/0x190 [ 29.322339] ? loop_lookup+0x190/0x190 [ 29.326203] do_vfs_ioctl+0x75a/0xff0 [ 29.329976] ? ioctl_preallocate+0x1a0/0x1a0 [ 29.334361] ? vfs_write+0x319/0x4d0 [ 29.338060] ? SyS_write+0x14d/0x210 [ 29.341772] ? security_file_ioctl+0x83/0xb0 [ 29.346151] SyS_ioctl+0x7f/0xb0 [ 29.349490] ? do_vfs_ioctl+0xff0/0xff0 [ 29.353442] do_syscall_64+0x1d5/0x640 [ 29.357310] entry_SYSCALL_64_after_hwframe+0x5e/0xd3 [ 29.362471] RIP: 0033:0x7fcec3f70089 [ 29.366161] RSP: 002b:00007ffdb7d08248 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 29.373844] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fcec3f70089 [ 29.381182] RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003 [ 29.388524] RBP: 00007ffdb7d08260 R08: 0000000000000002 R09: 0000000000000001 [ 29.395772] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 29.403026] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 29.410274] Code: 84 a1 00 00 00 e8 db 49 b1 ff 48 c7 c7 00 d9 04 89 e8 1f e3 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 a2 [ 29.429347] RIP: sysfs_do_create_link_sd+0x56/0x120 RSP: ffff888098327b48 [ 29.436455] ---[ end trace a50a3f480294fbe7 ]--- [ 29.441198] Kernel panic - not syncing: Fatal exception [ 29.446747] Kernel Offset: disabled [ 29.450372] Rebooting in 86400 seconds..