INIT: Entering runlevel: 2 [info] Using makefile-style concurrent boot in runlevel 2. [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] 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 '10.128.0.21' (ECDSA) to the list of known hosts. 2018/04/16 02:04:16 parsed 1 programs 2018/04/16 02:04:16 executed programs: 0 syzkaller login: [ 189.186357] IPVS: ftp: loaded support on port[0] = 21 [ 189.196299] IPVS: ftp: loaded support on port[0] = 21 [ 189.196785] IPVS: ftp: loaded support on port[0] = 21 [ 189.207734] IPVS: ftp: loaded support on port[0] = 21 [ 189.217738] IPVS: ftp: loaded support on port[0] = 21 [ 189.221700] IPVS: ftp: loaded support on port[0] = 21 [ 189.225037] IPVS: ftp: loaded support on port[0] = 21 [ 189.237366] IPVS: ftp: loaded support on port[0] = 21 [ 189.444624] IPVS: ftp: loaded support on port[0] = 21 [ 189.465835] IPVS: ftp: loaded support on port[0] = 21 [ 189.472991] IPVS: ftp: loaded support on port[0] = 21 [ 189.501479] IPVS: ftp: loaded support on port[0] = 21 [ 189.514644] IPVS: ftp: loaded support on port[0] = 21 [ 189.521303] IPVS: ftp: loaded support on port[0] = 21 [ 189.524207] IPVS: ftp: loaded support on port[0] = 21 [ 189.528292] IPVS: ftp: loaded support on port[0] = 21 [ 189.698777] IPVS: ftp: loaded support on port[0] = 21 [ 189.724928] IPVS: ftp: loaded support on port[0] = 21 [ 189.730503] IPVS: ftp: loaded support on port[0] = 21 [ 189.754354] IPVS: ftp: loaded support on port[0] = 21 [ 189.757954] IPVS: ftp: loaded support on port[0] = 21 [ 189.769313] IPVS: ftp: loaded support on port[0] = 21 [ 189.780223] IPVS: ftp: loaded support on port[0] = 21 [ 189.810161] IPVS: ftp: loaded support on port[0] = 21 2018/04/16 02:04:16 result: failed=false hanged=false err=executor 1: failed to write control pipe: write |1: broken pipe lstat(./0/file0) failed (errno 107) loop exited with status 69 (errno 0) 2018/04/16 02:04:16 result: failed=false hanged=false err=executor 0: failed to write control pipe: write |1: broken pipe lstat(./0/file0) failed (errno 107) loop exited with status 69 (errno 0) [ 189.938272] IPVS: ftp: loaded support on port[0] = 21 [ 190.004652] IPVS: ftp: loaded support on port[0] = 21 [ 190.018341] IPVS: ftp: loaded support on port[0] = 21 [ 190.023223] IPVS: ftp: loaded support on port[0] = 21 [ 190.028222] IPVS: ftp: loaded support on port[0] = 21 [ 190.039547] IPVS: ftp: loaded support on port[0] = 21 [ 190.051706] IPVS: ftp: loaded support on port[0] = 21 [ 190.070686] IPVS: ftp: loaded support on port[0] = 21 [ 190.101676] IPVS: ftp: loaded support on port[0] = 21 2018/04/16 02:04:17 result: failed=false hanged=false err=executor 4: failed to write control pipe: write |1: broken pipe lstat(./0/file0) failed (errno 107) loop exited with status 69 (errno 0) [ 190.266167] IPVS: ftp: loaded support on port[0] = 21 [ 190.288805] IPVS: ftp: loaded support on port[0] = 21 [ 190.293041] IPVS: ftp: loaded support on port[0] = 21 [ 190.317921] IPVS: ftp: loaded support on port[0] = 21 [ 190.333444] IPVS: ftp: loaded support on port[0] = 21 [ 190.352157] IPVS: ftp: loaded support on port[0] = 21 [ 190.356323] IPVS: ftp: loaded support on port[0] = 21 [ 190.369973] IPVS: ftp: loaded support on port[0] = 21 [ 190.524727] IPVS: ftp: loaded support on port[0] = 21 [ 190.529536] IPVS: ftp: loaded support on port[0] = 21 [ 190.550357] IPVS: ftp: loaded support on port[0] = 21 [ 190.556157] IPVS: ftp: loaded support on port[0] = 21 [ 190.565488] IPVS: ftp: loaded support on port[0] = 21 [ 190.583257] IPVS: ftp: loaded support on port[0] = 21 [ 190.628813] IPVS: ftp: loaded support on port[0] = 21 [ 190.649783] IPVS: ftp: loaded support on port[0] = 21 2018/04/16 02:04:17 result: failed=false hanged=false err=executor 2: failed to write control pipe: write |1: broken pipe lstat(./0/file0) failed (errno 107) loop exited with status 69 (errno 0) [ 190.827657] IPVS: ftp: loaded support on port[0] = 21 [ 190.890200] IPVS: ftp: loaded support on port[0] = 21 [ 190.890520] IPVS: ftp: loaded support on port[0] = 21 [ 190.900770] IPVS: ftp: loaded support on port[0] = 21 [ 190.902244] IPVS: ftp: loaded support on port[0] = 21 [ 190.932407] IPVS: ftp: loaded support on port[0] = 21 [ 190.940553] IPVS: ftp: loaded support on port[0] = 21 [ 190.965507] IPVS: ftp: loaded support on port[0] = 21 [ 191.112218] IPVS: ftp: loaded support on port[0] = 21 [ 191.355735] IPVS: ftp: loaded support on port[0] = 21 [ 191.368092] IPVS: ftp: loaded support on port[0] = 21 [ 191.386340] IPVS: ftp: loaded support on port[0] = 21 [ 191.400353] IPVS: ftp: loaded support on port[0] = 21 [ 191.400647] IPVS: ftp: loaded support on port[0] = 21 [ 191.413168] IPVS: ftp: loaded support on port[0] = 21 [ 191.413976] IPVS: ftp: loaded support on port[0] = 21 [ 191.491933] IPVS: ftp: loaded support on port[0] = 21 [ 191.693899] IPVS: ftp: loaded support on port[0] = 21 [ 191.770689] IPVS: ftp: loaded support on port[0] = 21 [ 191.837964] IPVS: ftp: loaded support on port[0] = 21 [ 191.852402] IPVS: ftp: loaded support on port[0] = 21 [ 191.899183] IPVS: ftp: loaded support on port[0] = 21 [ 191.903785] IPVS: ftp: loaded support on port[0] = 21 [ 191.931596] IPVS: ftp: loaded support on port[0] = 21 [ 191.991520] IPVS: ftp: loaded support on port[0] = 21 [ 192.079202] IPVS: ftp: loaded support on port[0] = 21 [ 192.137188] IPVS: ftp: loaded support on port[0] = 21 [ 192.337951] IPVS: ftp: loaded support on port[0] = 21 [ 192.339789] IPVS: ftp: loaded support on port[0] = 21 [ 192.370400] sysfs: cannot create duplicate filename '/devices/virtual/bdi/7:199-fuseblk' [ 192.376082] IPVS: ftp: loaded support on port[0] = 21 [ 192.378882] CPU: 1 PID: 4802 Comm: syz-executor5 Not tainted 4.16.0+ #4 [ 192.385090] IPVS: ftp: loaded support on port[0] = 21 [ 192.390764] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 192.390770] Call Trace: [ 192.390788] dump_stack+0x1b9/0x294 [ 192.390805] ? dump_stack_print_info.cold.2+0x52/0x52 [ 192.416672] ? trace_hardirqs_on+0xd/0x10 [ 192.420826] sysfs_warn_dup.cold.3+0x1c/0x2b [ 192.425235] sysfs_create_dir_ns+0x184/0x1d0 [ 192.429646] kobject_add_internal+0x353/0xba0 [ 192.434143] ? kobj_ns_type_registered+0x60/0x60 [ 192.438891] ? lock_downgrade+0x8e0/0x8e0 [ 192.443038] ? refcount_add_not_zero+0x320/0x320 [ 192.446937] IPVS: ftp: loaded support on port[0] = 21 [ 192.447794] ? kasan_check_read+0x11/0x20 [ 192.447815] kobject_add+0x13a/0x190 [ 192.460822] ? kset_create_and_add+0x190/0x190 [ 192.465412] ? mutex_unlock+0xd/0x10 [ 192.469133] ? __mutex_unlock_slowpath+0x180/0x8a0 [ 192.474069] device_add+0x3a5/0x16d0 [ 192.477792] ? device_private_init+0x230/0x230 [ 192.482372] ? kfree+0x1e9/0x260 [ 192.485742] ? kfree_const+0x5e/0x70 [ 192.489461] device_create_groups_vargs+0x1ff/0x270 [ 192.494482] device_create_vargs+0x46/0x60 [ 192.498726] bdi_register_va.part.10+0xbb/0x970 [ 192.503400] ? cgwb_kill+0x630/0x630 [ 192.507117] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 192.512653] ? bdi_init+0x416/0x510 [ 192.516285] ? wb_init+0x9e0/0x9e0 [ 192.519838] ? bdi_alloc_node+0x67/0xe0 [ 192.523814] ? bdi_alloc_node+0x67/0xe0 [ 192.527788] ? rcu_read_lock_sched_held+0x108/0x120 [ 192.532807] ? kmem_cache_alloc_node_trace+0x34e/0x770 [ 192.538088] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 192.543631] ? refcount_sub_and_test+0x212/0x330 [ 192.548394] bdi_register_va+0x68/0x80 [ 192.552284] super_setup_bdi_name+0x123/0x220 [ 192.556784] ? kill_block_super+0x100/0x100 [ 192.561107] ? kmem_cache_alloc_trace+0x616/0x780 [ 192.565956] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 192.570981] fuse_fill_super+0xe6e/0x1e20 [ 192.575137] ? fuse_get_root_inode+0x190/0x190 [ 192.579724] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 192.585260] ? vsnprintf+0x242/0x1b40 [ 192.589064] ? pointer+0xa20/0xa20 [ 192.592617] ? vsprintf+0x40/0x40 [ 192.596077] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 192.601094] ? set_blocksize+0x2c4/0x350 [ 192.605159] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 192.610700] mount_bdev+0x30c/0x3e0 [ 192.614335] ? fuse_get_root_inode+0x190/0x190 [ 192.618926] fuse_mount_blk+0x34/0x40 [ 192.622730] mount_fs+0xae/0x328 [ 192.626105] vfs_kern_mount.part.34+0xd4/0x4d0 [ 192.630691] ? may_umount+0xb0/0xb0 [ 192.634322] ? _raw_read_unlock+0x22/0x30 [ 192.638473] ? __get_fs_type+0x97/0xc0 [ 192.642366] do_mount+0x564/0x3070 [ 192.645909] ? do_raw_spin_unlock+0x9e/0x2e0 [ 192.650328] ? copy_mount_string+0x40/0x40 [ 192.654563] ? rcu_pm_notify+0xc0/0xc0 [ 192.658458] ? copy_mount_options+0x5f/0x380 [ 192.662869] ? rcu_read_lock_sched_held+0x108/0x120 [ 192.667888] ? kmem_cache_alloc_trace+0x616/0x780 [ 192.672735] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 192.678283] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 192.683826] ? copy_mount_options+0x285/0x380 [ 192.688336] ksys_mount+0x12d/0x140 [ 192.692464] SyS_mount+0x35/0x50 [ 192.695832] ? ksys_mount+0x140/0x140 [ 192.699636] do_syscall_64+0x29e/0x9d0 [ 192.703525] ? vmalloc_sync_all+0x30/0x30 [ 192.707681] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 192.712447] ? syscall_return_slowpath+0x5c0/0x5c0 [ 192.717383] ? syscall_return_slowpath+0x30f/0x5c0 [ 192.722321] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 192.727858] ? retint_user+0x18/0x18 [ 192.731577] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 192.736427] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 192.741616] RIP: 0033:0x455319 [ 192.744802] RSP: 002b:00007ffe745a7ab8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 192.752511] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000455319 [ 192.759780] RDX: 00000000004b9c85 RSI: 00000000200000c0 RDI: 0000000020000040 [ 192.767048] RBP: 0000000020000040 R08: 00007ffe745a7ad0 R09: 00524f5252450040 [ 192.774324] R10: 0000000002200081 R11: 0000000000000246 R12: 0000000000000000 [ 192.781589] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 192.789350] ------------[ cut here ]------------ [ 192.794139] kobject_add_internal failed for 7:199-fuseblk with -EEXIST, don't try to register things with the same name in the same directory. [ 192.807420] WARNING: CPU: 1 PID: 4802 at lib/kobject.c:238 kobject_add_internal+0x8e0/0xba0 [ 192.815909] Kernel panic - not syncing: panic_on_warn set ... [ 192.815909] [ 192.823278] CPU: 1 PID: 4802 Comm: syz-executor5 Not tainted 4.16.0+ #4 [ 192.830031] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 192.839380] Call Trace: [ 192.841973] dump_stack+0x1b9/0x294 [ 192.845604] ? dump_stack_print_info.cold.2+0x52/0x52 [ 192.850804] ? kobject_add_internal+0x820/0xba0 [ 192.854825] IPVS: ftp: loaded support on port[0] = 21 [ 192.855467] panic+0x22f/0x4de [ 192.855481] ? add_taint.cold.5+0x16/0x16 [ 192.855500] ? __warn.cold.8+0x148/0x1b3 [ 192.855512] ? __warn.cold.8+0x117/0x1b3 [ 192.855528] ? kobject_add_internal+0x8e0/0xba0 [ 192.855544] __warn.cold.8+0x163/0x1b3 [ 192.884643] ? kobject_add_internal+0x8e0/0xba0 [ 192.889316] report_bug+0x252/0x2d0 [ 192.892960] do_error_trap+0x1de/0x490 [ 192.896860] ? math_error+0x420/0x420 [ 192.900664] ? vprintk_default+0x28/0x30 [ 192.904724] ? vprintk_func+0x81/0xe7 [ 192.908530] ? printk+0x9e/0xba [ 192.911819] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 192.916664] do_invalid_op+0x1b/0x20 [ 192.920380] invalid_op+0x1b/0x40 [ 192.923836] RIP: 0010:kobject_add_internal+0x8e0/0xba0 [ 192.929107] RSP: 0018:ffff8801a78a7250 EFLAGS: 00010286 [ 192.934470] RAX: 0000000000000082 RBX: ffff8801a798f4d0 RCX: ffffffff815f5b3d [ 192.941736] RDX: 0000000000000000 RSI: ffffffff815fa7f1 RDI: ffff8801a78a6db0 [ 192.949003] RBP: ffff8801a78a7348 R08: ffff8801a7898240 R09: 0000000000000006 [ 192.956272] R10: ffff8801a7898240 R11: 0000000000000000 R12: 00000000ffffffef [ 192.963551] R13: ffff8801d31e6f80 R14: 1ffff10034f14e54 R15: ffff8801d9fc8f00 [ 192.970835] ? console_unlock+0x8ad/0x1100 [ 192.975071] ? vprintk_func+0x81/0xe7 [ 192.978863] ? kobj_ns_type_registered+0x60/0x60 [ 192.983611] ? lock_downgrade+0x8e0/0x8e0 [ 192.987762] ? refcount_add_not_zero+0x320/0x320 [ 192.992520] ? kasan_check_read+0x11/0x20 [ 192.996669] kobject_add+0x13a/0x190 [ 193.000376] ? kset_create_and_add+0x190/0x190 [ 193.004944] ? mutex_unlock+0xd/0x10 [ 193.008641] ? __mutex_unlock_slowpath+0x180/0x8a0 [ 193.013566] device_add+0x3a5/0x16d0 [ 193.017280] ? device_private_init+0x230/0x230 [ 193.021844] ? kfree+0x1e9/0x260 [ 193.025192] ? kfree_const+0x5e/0x70 [ 193.028898] device_create_groups_vargs+0x1ff/0x270 [ 193.033906] device_create_vargs+0x46/0x60 [ 193.038126] bdi_register_va.part.10+0xbb/0x970 [ 193.042780] ? cgwb_kill+0x630/0x630 [ 193.046478] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 193.051999] ? bdi_init+0x416/0x510 [ 193.055621] ? wb_init+0x9e0/0x9e0 [ 193.059150] ? bdi_alloc_node+0x67/0xe0 [ 193.063118] ? bdi_alloc_node+0x67/0xe0 [ 193.067088] ? rcu_read_lock_sched_held+0x108/0x120 [ 193.072108] ? kmem_cache_alloc_node_trace+0x34e/0x770 [ 193.077376] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 193.082904] ? refcount_sub_and_test+0x212/0x330 [ 193.087654] bdi_register_va+0x68/0x80 [ 193.091536] super_setup_bdi_name+0x123/0x220 [ 193.096019] ? kill_block_super+0x100/0x100 [ 193.100334] ? kmem_cache_alloc_trace+0x616/0x780 [ 193.105166] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 193.110172] fuse_fill_super+0xe6e/0x1e20 [ 193.114307] ? fuse_get_root_inode+0x190/0x190 [ 193.118876] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 193.124407] ? vsnprintf+0x242/0x1b40 [ 193.128212] ? pointer+0xa20/0xa20 [ 193.131749] ? vsprintf+0x40/0x40 [ 193.135186] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 193.140182] ? set_blocksize+0x2c4/0x350 [ 193.144228] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 193.149749] mount_bdev+0x30c/0x3e0 [ 193.153359] ? fuse_get_root_inode+0x190/0x190 [ 193.157925] fuse_mount_blk+0x34/0x40 [ 193.161706] mount_fs+0xae/0x328 [ 193.165067] vfs_kern_mount.part.34+0xd4/0x4d0 [ 193.169632] ? may_umount+0xb0/0xb0 [ 193.173240] ? _raw_read_unlock+0x22/0x30 [ 193.177371] ? __get_fs_type+0x97/0xc0 [ 193.181263] do_mount+0x564/0x3070 [ 193.184798] ? do_raw_spin_unlock+0x9e/0x2e0 [ 193.189199] ? copy_mount_string+0x40/0x40 [ 193.193427] ? rcu_pm_notify+0xc0/0xc0 [ 193.197298] ? copy_mount_options+0x5f/0x380 [ 193.201686] ? rcu_read_lock_sched_held+0x108/0x120 [ 193.206691] ? kmem_cache_alloc_trace+0x616/0x780 [ 193.211518] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 193.217051] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 193.222580] ? copy_mount_options+0x285/0x380 [ 193.227066] ksys_mount+0x12d/0x140 [ 193.230675] SyS_mount+0x35/0x50 [ 193.234032] ? ksys_mount+0x140/0x140 [ 193.237834] do_syscall_64+0x29e/0x9d0 [ 193.241714] ? vmalloc_sync_all+0x30/0x30 [ 193.245853] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 193.250592] ? syscall_return_slowpath+0x5c0/0x5c0 [ 193.255511] ? syscall_return_slowpath+0x30f/0x5c0 [ 193.260431] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 193.265950] ? retint_user+0x18/0x18 [ 193.269647] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 193.274479] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 193.279650] RIP: 0033:0x455319 [ 193.282828] RSP: 002b:00007ffe745a7ab8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 [ 193.290536] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000455319 [ 193.297795] RDX: 00000000004b9c85 RSI: 00000000200000c0 RDI: 0000000020000040 [ 193.305051] RBP: 0000000020000040 R08: 00007ffe745a7ad0 R09: 00524f5252450040 [ 193.312312] R10: 0000000002200081 R11: 0000000000000246 R12: 0000000000000000 [ 193.319568] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 193.327475] Dumping ftrace buffer: [ 193.331123] (ftrace buffer empty) [ 193.334811] Kernel Offset: disabled [ 193.338417] Rebooting in 86400 seconds..