Warning: Permanently added '10.128.10.3' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 51.826356] FAULT_INJECTION: forcing a failure. [ 51.826356] name failslab, interval 1, probability 0, space 0, times 1 [ 51.837683] CPU: 1 PID: 7996 Comm: syz-executor241 Not tainted 4.14.295-syzkaller #0 [ 51.845550] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 51.854886] Call Trace: [ 51.857457] dump_stack+0x1b2/0x281 [ 51.861065] should_fail.cold+0x10a/0x149 [ 51.865193] should_failslab+0xd6/0x130 [ 51.869147] kmem_cache_alloc+0x28e/0x3c0 [ 51.873279] __kernfs_new_node+0x6f/0x470 [ 51.877410] kernfs_new_node+0x7b/0xe0 [ 51.881274] __kernfs_create_file+0x3d/0x320 [ 51.885659] sysfs_add_file_mode_ns+0x1e1/0x450 [ 51.890315] sysfs_merge_group+0xdc/0x200 [ 51.894449] dpm_sysfs_add+0x122/0x1c0 [ 51.898339] device_add+0x977/0x15c0 [ 51.902039] ? device_is_dependent+0x2a0/0x2a0 [ 51.906605] ? kfree+0x1f0/0x250 [ 51.909949] device_create_groups_vargs+0x1dc/0x250 [ 51.914942] device_create_vargs+0x3a/0x50 [ 51.919153] bdi_register_va.part.0+0x35/0x650 [ 51.923713] bdi_register+0x101/0x110 [ 51.927488] ? bdi_register_va+0x80/0x80 [ 51.931527] ? vsnprintf+0x260/0x1340 [ 51.935310] bdi_register_owner+0x59/0xf0 [ 51.939437] device_add_disk+0x5bb/0xdc0 [ 51.943477] ? sprintf+0xa7/0xd0 [ 51.946826] ? blk_alloc_devt+0x310/0x310 [ 51.950952] ? __lockdep_init_map+0x100/0x560 [ 51.955422] ? __lockdep_init_map+0x100/0x560 [ 51.959896] loop_add+0x615/0x830 [ 51.963324] ? loop_queue_rq+0x280/0x280 [ 51.967363] ? loop_queue_work+0x21e0/0x21e0 [ 51.971755] ? do_fault_around+0x35e/0x620 [ 51.975970] loop_control_ioctl+0x11a/0x3f0 [ 51.980268] ? loop_lookup+0x190/0x190 [ 51.984135] ? loop_lookup+0x190/0x190 [ 51.988000] do_vfs_ioctl+0x75a/0xff0 [ 51.991784] ? ioctl_preallocate+0x1a0/0x1a0 [ 51.996170] ? vfs_write+0x319/0x4d0 [ 51.999861] ? SyS_write+0x14d/0x210 [ 52.003555] ? security_file_ioctl+0x83/0xb0 [ 52.007939] SyS_ioctl+0x7f/0xb0 [ 52.011282] ? do_vfs_ioctl+0xff0/0xff0 [ 52.015239] do_syscall_64+0x1d5/0x640 [ 52.019112] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 52.024280] RIP: 0033:0x7fdef129c079 [ 52.027967] RSP: 002b:00007fff23992fa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 52.035648] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fdef129c079 [ 52.042892] RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003 [ 52.050138] RBP: 00007fff23992fc0 R08: 0000000000000002 R09: 0000000000000001 [ 52.057384] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 52.064634] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 52.075597] kasan: CONFIG_KASAN_INLINE enabled [ 52.080498] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 52.087856] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 52.094073] Modules linked in: [ 52.097257] CPU: 1 PID: 7996 Comm: syz-executor241 Not tainted 4.14.295-syzkaller #0 [ 52.105119] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 [ 52.114448] task: ffff8880b3128200 task.stack: ffff8880b3750000 [ 52.120482] RIP: 0010:sysfs_do_create_link_sd+0x56/0x120 [ 52.125903] RSP: 0018:ffff8880b3757b48 EFLAGS: 00010202 [ 52.131245] RAX: dffffc0000000000 RBX: 0000000000000010 RCX: 0000000000001e2c [ 52.138491] RDX: 0000000000000008 RSI: 0000000000000001 RDI: 0000000000000040 [ 52.145740] RBP: ffffffff87cbcae0 R08: ffffffff8b9b0c60 R09: 00000000000400cc [ 52.152985] R10: ffff8880b3128ab0 R11: ffff8880b3128200 R12: ffff8880af314c40 [ 52.160227] R13: ffffffff87cbcae0 R14: 0000000000000001 R15: ffff888095f2e11c [ 52.167472] FS: 000055555681c300(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 [ 52.175671] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 52.181526] CR2: 00005573b97fd230 CR3: 00000000b57f4000 CR4: 00000000003406e0 [ 52.188774] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 52.196017] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 52.203260] Call Trace: [ 52.205830] sysfs_create_link+0x5f/0xc0 [ 52.209869] device_add_disk+0x9f8/0xdc0 [ 52.213904] ? sprintf+0xa7/0xd0 [ 52.217244] ? blk_alloc_devt+0x310/0x310 [ 52.221365] ? __lockdep_init_map+0x100/0x560 [ 52.225833] ? __lockdep_init_map+0x100/0x560 [ 52.230304] loop_add+0x615/0x830 [ 52.233735] ? loop_queue_rq+0x280/0x280 [ 52.237774] ? loop_queue_work+0x21e0/0x21e0 [ 52.242159] ? do_fault_around+0x35e/0x620 [ 52.246366] loop_control_ioctl+0x11a/0x3f0 [ 52.250663] ? loop_lookup+0x190/0x190 [ 52.254524] ? loop_lookup+0x190/0x190 [ 52.258387] do_vfs_ioctl+0x75a/0xff0 [ 52.262167] ? ioctl_preallocate+0x1a0/0x1a0 [ 52.266549] ? vfs_write+0x319/0x4d0 [ 52.270238] ? SyS_write+0x14d/0x210 [ 52.273925] ? security_file_ioctl+0x83/0xb0 [ 52.278308] SyS_ioctl+0x7f/0xb0 [ 52.281650] ? do_vfs_ioctl+0xff0/0xff0 [ 52.285599] do_syscall_64+0x1d5/0x640 [ 52.289463] entry_SYSCALL_64_after_hwframe+0x46/0xbb [ 52.294631] RIP: 0033:0x7fdef129c079 [ 52.298314] RSP: 002b:00007fff23992fa8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 52.305997] RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fdef129c079 [ 52.313251] RDX: 0000000000000000 RSI: 0000000000004c80 RDI: 0000000000000003 [ 52.320494] RBP: 00007fff23992fc0 R08: 0000000000000002 R09: 0000000000000001 [ 52.327739] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 52.334982] R13: 431bde82d7b634db R14: 0000000000000000 R15: 0000000000000000 [ 52.342229] Code: 84 a1 00 00 00 e8 eb 55 b1 ff 48 c7 c7 20 d3 04 89 e8 0f 6c 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 [ 52.361288] RIP: sysfs_do_create_link_sd+0x56/0x120 RSP: ffff8880b3757b48 [ 52.368239] ---[ end trace 0696be299da0dfe9 ]--- [ 52.373010] Kernel panic - not syncing: Fatal exception [ 52.378609] Kernel Offset: disabled [ 52.382217] Rebooting in 86400 seconds..