[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 41.989453][ T26] audit: type=1800 audit(1553294903.898:25): pid=7884 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 42.029981][ T26] audit: type=1800 audit(1553294903.898:26): pid=7884 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 42.068584][ T26] audit: type=1800 audit(1553294903.898:27): pid=7884 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.126' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 50.855139][ T8035] FAULT_INJECTION: forcing a failure. [ 50.855139][ T8035] name failslab, interval 1, probability 0, space 0, times 1 [ 50.869174][ T8035] CPU: 1 PID: 8035 Comm: syz-executor344 Not tainted 5.1.0-rc1-next-20190322 #9 [ 50.878269][ T8035] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 50.888334][ T8035] Call Trace: [ 50.891654][ T8035] dump_stack+0x172/0x1f0 [ 50.896023][ T8035] should_fail.cold+0xa/0x15 [ 50.900641][ T8035] ? fault_create_debugfs_attr+0x1e0/0x1e0 [ 50.906593][ T8035] ? ___might_sleep+0x163/0x280 [ 50.911460][ T8035] __should_failslab+0x121/0x190 [ 50.916519][ T8035] should_failslab+0x9/0x14 [ 50.921053][ T8035] __kmalloc_track_caller+0x2d8/0x740 [ 50.926461][ T8035] ? lockdep_hardirqs_on+0x418/0x5d0 [ 50.931783][ T8035] ? trace_hardirqs_on+0x67/0x230 [ 50.936842][ T8035] ? kasan_check_read+0x11/0x20 [ 50.941710][ T8035] ? kstrdup_const+0x66/0x80 [ 50.946335][ T8035] kstrdup+0x3a/0x70 [ 50.950276][ T8035] kstrdup_const+0x66/0x80 [ 50.955069][ T8035] kvasprintf_const+0x10e/0x190 [ 50.959932][ T8035] kobject_set_name_vargs+0x5b/0x150 [ 50.965224][ T8035] dev_set_name+0xbd/0xf0 [ 50.969710][ T8035] ? device_initialize+0x440/0x440 [ 50.974875][ T8035] ? __init_waitqueue_head+0x36/0x90 [ 50.980186][ T8035] ? pm_runtime_init+0x311/0x3b0 [ 50.985132][ T8035] netdev_register_kobject+0xc3/0x3c0 [ 50.990544][ T8035] register_netdevice+0x878/0xff0 [ 50.995595][ T8035] ? netdev_change_features+0xb0/0xb0 [ 51.000998][ T8035] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 51.007549][ T8035] ? kasan_check_read+0x11/0x20 [ 51.012431][ T8035] ip6_tnl_create2+0x1c2/0x350 [ 51.017229][ T8035] ip6_tnl_locate+0x63f/0x8d0 [ 51.022098][ T8035] ? ip6_tnl_create2+0x350/0x350 [ 51.027055][ T8035] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 51.033305][ T8035] ? _copy_from_user+0xdd/0x150 [ 51.038195][ T8035] ip6_tnl_ioctl+0x490/0xab0 [ 51.042819][ T8035] ? ip6_tnl_locate+0x8d0/0x8d0 [ 51.047698][ T8035] ? rtnl_lock+0x17/0x20 [ 51.051982][ T8035] ? find_held_lock+0x35/0x130 [ 51.056754][ T8035] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 51.063002][ T8035] ? full_name_hash+0xc0/0x100 [ 51.069344][ T8035] ? ip6_tnl_locate+0x8d0/0x8d0 [ 51.074363][ T8035] dev_ifsioc+0x257/0x990 [ 51.078716][ T8035] ? ip6_tnl_locate+0x8d0/0x8d0 [ 51.083574][ T8035] ? dev_ifsioc+0x257/0x990 [ 51.088101][ T8035] ? register_gifconf+0x70/0x70 [ 51.092961][ T8035] dev_ioctl+0x286/0xc90 [ 51.097347][ T8035] sock_ioctl+0x48b/0x610 [ 51.101696][ T8035] ? dlci_ioctl_set+0x40/0x40 [ 51.106480][ T8035] ? vfs_write+0x2f0/0x580 [ 51.110907][ T8035] ? dlci_ioctl_set+0x40/0x40 [ 51.115591][ T8035] do_vfs_ioctl+0xd6e/0x1390 [ 51.121184][ T8035] ? ioctl_preallocate+0x210/0x210 [ 51.126335][ T8035] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 51.132585][ T8035] ? __sb_end_write+0xd9/0x110 [ 51.137380][ T8035] ? vfs_write+0x160/0x580 [ 51.141837][ T8035] ? tomoyo_file_ioctl+0x23/0x30 [ 51.146802][ T8035] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 51.153085][ T8035] ? security_file_ioctl+0x93/0xc0 [ 51.158387][ T8035] ksys_ioctl+0xab/0xd0 [ 51.162583][ T8035] __x64_sys_ioctl+0x73/0xb0 [ 51.169947][ T8035] do_syscall_64+0x103/0x610 [ 51.174588][ T8035] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 51.180478][ T8035] RIP: 0033:0x441399 [ 51.184388][ T8035] Code: e8 5c ae 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 0f 83 bb 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 51.204015][ T8035] RSP: 002b:00007ffcd20666b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 51.212716][ T8035] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441399 [ 51.221131][ T8035] RDX: 0000000020000080 RSI: 00000000000089f1 RDI: 0000000000000006 [ 51.229099][ T8035] RBP: 00007ffcd20666d0 R08: 0000000000000001 R09: 0000000000000000 [ 51.237085][ T8035] R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff [ 51.245069][ T8035] R13: 0000000000000007 R14: 0000000000000000 R15: 0000000000000000 [ 51.254106][ T8035] ------------[ cut here ]------------ [ 51.259601][ T8035] kernel BUG at net/core/net-sysfs.c:1631! [ 51.265569][ T8035] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 51.272437][ T8035] CPU: 1 PID: 8035 Comm: syz-executor344 Not tainted 5.1.0-rc1-next-20190322 #9 [ 51.281466][ T8035] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.291534][ T8035] RIP: 0010:netdev_release+0x92/0xb0 [ 51.296829][ T8035] Code: 48 c1 ea 03 80 3c 02 00 75 29 48 8b bb 80 fa ff ff e8 12 77 20 fc 4c 89 ef e8 7a cc f5 ff 5b 41 5c 41 5d 5d c3 e8 9e 9b e8 fb <0f> 0b e8 27 b1 20 fc eb 9c e8 80 b1 20 fc eb d0 0f 1f 40 00 66 2e [ 51.326752][ T8035] RSP: 0018:ffff88808d6af718 EFLAGS: 00010293 [ 51.332828][ T8035] RAX: ffff8880a87902c0 RBX: ffff88808e3612a0 RCX: ffffffff8587fc89 [ 51.340802][ T8035] RDX: 0000000000000000 RSI: ffffffff8587fcd2 RDI: 0000000000000001 [ 51.348770][ T8035] RBP: ffff88808d6af730 R08: ffff8880a87902c0 R09: ffff8880a8790b60 [ 51.356751][ T8035] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 51.364736][ T8035] R13: ffff88808e360d00 R14: 0000000000000000 R15: 0000000000000000 [ 51.373710][ T8035] FS: 0000000001752880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 51.382647][ T8035] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 51.389245][ T8035] CR2: 0000000000000000 CR3: 0000000098da2000 CR4: 00000000001406e0 [ 51.397300][ T8035] Call Trace: [ 51.400615][ T8035] ? xps_cpus_store+0x2b0/0x2b0 [ 51.405576][ T8035] device_release+0x7d/0x210 [ 51.410207][ T8035] kobject_put.cold+0x28f/0x2ec [ 51.415091][ T8035] put_device+0x20/0x30 [ 51.419265][ T8035] netdev_register_kobject+0x1a1/0x3c0 [ 51.424753][ T8035] register_netdevice+0x878/0xff0 [ 51.429867][ T8035] ? netdev_change_features+0xb0/0xb0 [ 51.435234][ T8035] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 51.441494][ T8035] ? kasan_check_read+0x11/0x20 [ 51.446375][ T8035] ip6_tnl_create2+0x1c2/0x350 [ 51.451273][ T8035] ip6_tnl_locate+0x63f/0x8d0 [ 51.455957][ T8035] ? ip6_tnl_create2+0x350/0x350 [ 51.461110][ T8035] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 51.467438][ T8035] ? _copy_from_user+0xdd/0x150 [ 51.472780][ T8035] ip6_tnl_ioctl+0x490/0xab0 [ 51.477373][ T8035] ? ip6_tnl_locate+0x8d0/0x8d0 [ 51.482220][ T8035] ? rtnl_lock+0x17/0x20 [ 51.486456][ T8035] ? find_held_lock+0x35/0x130 [ 51.491242][ T8035] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 51.497571][ T8035] ? full_name_hash+0xc0/0x100 [ 51.502440][ T8035] ? ip6_tnl_locate+0x8d0/0x8d0 [ 51.508862][ T8035] dev_ifsioc+0x257/0x990 [ 51.513193][ T8035] ? ip6_tnl_locate+0x8d0/0x8d0 [ 51.519442][ T8035] ? dev_ifsioc+0x257/0x990 [ 51.523970][ T8035] ? register_gifconf+0x70/0x70 [ 51.528849][ T8035] dev_ioctl+0x286/0xc90 [ 51.533093][ T8035] sock_ioctl+0x48b/0x610 [ 51.537446][ T8035] ? dlci_ioctl_set+0x40/0x40 [ 51.542125][ T8035] ? vfs_write+0x2f0/0x580 [ 51.546567][ T8035] ? dlci_ioctl_set+0x40/0x40 [ 51.551246][ T8035] do_vfs_ioctl+0xd6e/0x1390 [ 51.557169][ T8035] ? ioctl_preallocate+0x210/0x210 [ 51.562348][ T8035] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 51.569156][ T8035] ? __sb_end_write+0xd9/0x110 [ 51.573951][ T8035] ? vfs_write+0x160/0x580 [ 51.578375][ T8035] ? tomoyo_file_ioctl+0x23/0x30 [ 51.583338][ T8035] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 51.589611][ T8035] ? security_file_ioctl+0x93/0xc0 [ 51.594752][ T8035] ksys_ioctl+0xab/0xd0 [ 51.598940][ T8035] __x64_sys_ioctl+0x73/0xb0 [ 51.603553][ T8035] do_syscall_64+0x103/0x610 [ 51.608711][ T8035] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 51.614693][ T8035] RIP: 0033:0x441399 [ 51.618592][ T8035] Code: e8 5c ae 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 0f 83 bb 0a fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 51.638200][ T8035] RSP: 002b:00007ffcd20666b8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 [ 51.646609][ T8035] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441399 [ 51.654611][ T8035] RDX: 0000000020000080 RSI: 00000000000089f1 RDI: 0000000000000006 [ 51.662601][ T8035] RBP: 00007ffcd20666d0 R08: 0000000000000001 R09: 0000000000000000 [ 51.670597][ T8035] R10: 0000000000000000 R11: 0000000000000246 R12: ffffffffffffffff [ 51.678650][ T8035] R13: 0000000000000007 R14: 0000000000000000 R15: 0000000000000000 [ 51.686617][ T8035] Modules linked in: [ 51.690745][ T8035] ---[ end trace 0dbf190846958075 ]--- [ 51.696374][ T8035] RIP: 0010:netdev_release+0x92/0xb0 [ 51.701690][ T8035] Code: 48 c1 ea 03 80 3c 02 00 75 29 48 8b bb 80 fa ff ff e8 12 77 20 fc 4c 89 ef e8 7a cc f5 ff 5b 41 5c 41 5d 5d c3 e8 9e 9b e8 fb <0f> 0b e8 27 b1 20 fc eb 9c e8 80 b1 20 fc eb d0 0f 1f 40 00 66 2e [ 51.721788][ T8035] RSP: 0018:ffff88808d6af718 EFLAGS: 00010293 [ 51.727920][ T8035] RAX: ffff8880a87902c0 RBX: ffff88808e3612a0 RCX: ffffffff8587fc89 [ 51.735951][ T8035] RDX: 0000000000000000 RSI: ffffffff8587fcd2 RDI: 0000000000000001 [ 51.743998][ T8035] RBP: ffff88808d6af730 R08: ffff8880a87902c0 R09: ffff8880a8790b60 [ 51.752740][ T8035] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 51.760945][ T8035] R13: ffff88808e360d00 R14: 0000000000000000 R15: 0000000000000000 [ 51.769102][ T8035] FS: 0000000001752880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 51.778096][ T8035] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 51.784737][ T8035] CR2: 0000000000000000 CR3: 0000000098da2000 CR4: 00000000001406e0 [ 51.792721][ T8035] Kernel panic - not syncing: Fatal exception [ 51.799545][ T8035] Kernel Offset: disabled [ 51.804136][ T8035] Rebooting in 86400 seconds..