[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 17.330969] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 22.694600] random: sshd: uninitialized urandom read (32 bytes read) [ 22.992948] random: sshd: uninitialized urandom read (32 bytes read) [ 23.726590] random: sshd: uninitialized urandom read (32 bytes read) [ 852.091605] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.23' (ECDSA) to the list of known hosts. [ 857.615830] random: sshd: uninitialized urandom read (32 bytes read) 2018/07/31 01:28:34 parsed 1 programs [ 858.762881] random: cc1: uninitialized urandom read (8 bytes read) 2018/07/31 01:28:35 executed programs: 0 [ 859.900816] IPVS: ftp: loaded support on port[0] = 21 [ 860.040372] bridge0: port 1(bridge_slave_0) entered blocking state [ 860.046740] bridge0: port 1(bridge_slave_0) entered disabled state [ 860.053506] device bridge_slave_0 entered promiscuous mode [ 860.066693] bridge0: port 2(bridge_slave_1) entered blocking state [ 860.073155] bridge0: port 2(bridge_slave_1) entered disabled state [ 860.080036] device bridge_slave_1 entered promiscuous mode [ 860.092316] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 860.105800] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 860.136629] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 860.152463] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 860.197818] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 860.205306] team0: Port device team_slave_0 added [ 860.216675] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 860.223689] team0: Port device team_slave_1 added [ 860.235107] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 860.245833] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 860.254628] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 860.268340] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 860.344657] bridge0: port 2(bridge_slave_1) entered blocking state [ 860.351018] bridge0: port 2(bridge_slave_1) entered forwarding state [ 860.357592] bridge0: port 1(bridge_slave_0) entered blocking state [ 860.363920] bridge0: port 1(bridge_slave_0) entered forwarding state [ 860.647982] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 860.654118] 8021q: adding VLAN 0 to HW filter on device bond0 [ 860.685520] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 860.715938] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 860.722919] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 860.749295] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 860.755379] 8021q: adding VLAN 0 to HW filter on device team0 [ 861.002424] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready 2018/07/31 01:28:41 executed programs: 5 2018/07/31 01:28:46 executed programs: 11 [ 1145.290299] INFO: task syz-executor0:4749 blocked for more than 140 seconds. [ 1145.297672] Not tainted 4.18.0-rc6-next-20180725+ #18 [ 1145.303404] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1145.311379] syz-executor0 D25872 4749 4354 0x00000004 [ 1145.317103] Call Trace: [ 1145.319773] __schedule+0x87c/0x1ed0 [ 1145.323501] ? __sched_text_start+0x8/0x8 [ 1145.327674] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 1145.332389] ? kasan_check_write+0x14/0x20 [ 1145.336653] ? do_raw_spin_lock+0xc1/0x200 [ 1145.340912] ? trace_hardirqs_on+0xd/0x10 [ 1145.345077] ? prepare_to_wait_event+0x396/0xc70 [ 1145.349844] ? prepare_to_wait_exclusive+0x550/0x550 [ 1145.354962] ? send_sigio+0x340/0x340 [ 1145.358771] ? do_raw_spin_unlock+0xa7/0x2f0 [ 1145.363181] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 1145.367776] schedule+0xfb/0x450 [ 1145.371138] ? lock_downgrade+0x8f0/0x8f0 [ 1145.375288] ? __schedule+0x1ed0/0x1ed0 [ 1145.379264] ? check_same_owner+0x340/0x340 [ 1145.383593] ? do_raw_spin_unlock+0xa7/0x2f0 [ 1145.388129] ? replenish_dl_entity.cold.54+0x37/0x37 [ 1145.393246] request_wait_answer+0x4c8/0x920 [ 1145.397657] ? fuse_read_forget.isra.22+0xdc0/0xdc0 [ 1145.402689] ? finish_wait+0x430/0x430 [ 1145.406587] ? send_sigio+0x340/0x340 [ 1145.410406] ? lock_acquire+0x1e4/0x540 [ 1145.414399] ? finish_wait+0x430/0x430 [ 1145.418308] ? refcount_inc_not_zero_checked+0x1e5/0x2f0 [ 1145.423776] ? finish_wait+0x430/0x430 [ 1145.427681] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 1145.432267] ? fuse_dev_ioctl+0x430/0x430 [ 1145.436514] ? kasan_check_write+0x14/0x20 [ 1145.440756] ? do_raw_spin_lock+0xc1/0x200 [ 1145.445003] __fuse_request_send+0x12a/0x1d0 [ 1145.449428] fuse_request_send+0x62/0xa0 [ 1145.453586] fuse_simple_request+0x33d/0x730 [ 1145.458015] fuse_do_setattr+0xb03/0x1c90 [ 1145.462181] ? fuse_flush_times+0x6f0/0x6f0 [ 1145.466518] ? __x64_sys_chmod+0x5c/0x80 [ 1145.470585] ? do_syscall_64+0x1b9/0x820 [ 1145.474732] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1145.480103] ? ktime_get_coarse_real_ts64+0x243/0x3a0 [ 1145.485294] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1145.490871] ? timespec64_trunc+0xea/0x180 [ 1145.495114] ? current_time+0x131/0x1b0 [ 1145.499095] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 1145.504126] fuse_setattr+0x244/0x570 [ 1145.507936] ? fuse_do_setattr+0x1c90/0x1c90 [ 1145.512353] notify_change+0xc0c/0x10f0 [ 1145.516333] ? setattr_prepare+0x830/0x830 [ 1145.520580] ? down_read+0x1d0/0x1d0 [ 1145.524303] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1145.529948] chmod_common+0x2a0/0x590 [ 1145.533753] ? filp_close+0x250/0x250 [ 1145.537575] do_fchmodat+0xc3/0x160 [ 1145.541207] ? __ia32_sys_fchmod+0x80/0x80 [ 1145.545452] __x64_sys_chmod+0x5c/0x80 [ 1145.549358] do_syscall_64+0x1b9/0x820 [ 1145.553257] ? syscall_return_slowpath+0x5e0/0x5e0 [ 1145.558202] ? syscall_return_slowpath+0x31d/0x5e0 [ 1145.563128] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 1145.568148] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1145.573081] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1145.578269] RIP: 0033:0x456a09 [ 1145.581457] Code: 07 48 83 c7 10 0f 10 06 48 83 c6 10 0f 11 07 48 83 c7 10 0f 10 06 48 83 c6 10 0f 11 07 48 83 c7 10 0f 10 06 48 83 c6 10 0f 11 <07> 48 83 c7 10 0f 10 06 48 83 c6 10 0f 11 07 48 83 c7 10 0f 10 06 [ 1145.600372] RSP: 002b:00007f50b55dfc78 EFLAGS: 00000246 ORIG_RAX: 000000000000005a [ 1145.608091] RAX: ffffffffffffffda RBX: 00007f50b55e06d4 RCX: 0000000000456a09 [ 1145.615372] RDX: 0000000000000000 RSI: 0000000000000150 RDI: 0000000020000140 [ 1145.622640] RBP: 0000000000930140 R08: 0000000000000000 R09: 0000000000000000 [ 1145.629935] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 1145.637225] R13: 00000000004ca568 R14: 00000000004c1c78 R15: 0000000000000001 [ 1145.644519] INFO: task syz-executor0:4750 blocked for more than 140 seconds. [ 1145.651697] Not tainted 4.18.0-rc6-next-20180725+ #18 [ 1145.657410] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1145.665550] syz-executor0 D26224 4750 4354 0x00000004 [ 1145.671198] Call Trace: [ 1145.673786] __schedule+0x87c/0x1ed0 [ 1145.677501] ? __sched_text_start+0x8/0x8 [ 1145.681649] ? trace_hardirqs_on+0x10/0x10 [ 1145.685907] ? trace_hardirqs_on+0x10/0x10 [ 1145.690140] ? lookup_fast+0x429/0x12a0 [ 1145.694214] ? lock_downgrade+0x8f0/0x8f0 [ 1145.698382] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1145.703921] schedule+0xfb/0x450 [ 1145.707315] ? lock_downgrade+0x8f0/0x8f0 [ 1145.711492] ? __schedule+0x1ed0/0x1ed0 [ 1145.715579] ? kasan_check_read+0x11/0x20 [ 1145.719823] ? do_raw_spin_unlock+0xa7/0x2f0 [ 1145.724243] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 1145.728843] ? kasan_check_write+0x14/0x20 [ 1145.733084] ? do_raw_spin_lock+0xc1/0x200 [ 1145.737336] rwsem_down_read_failed+0x362/0x600 [ 1145.742093] ? rwsem_down_write_failed_killable+0x10/0x10 [ 1145.747647] ? lock_acquire+0x1e4/0x540 [ 1145.751633] ? lockref_get_not_dead+0x70/0x90 [ 1145.756152] ? lock_acquire+0x1e4/0x540 [ 1145.760133] ? lookup_slow+0x49/0x80 [ 1145.763854] ? lock_release+0xa30/0xa30 [ 1145.767848] ? check_same_owner+0x340/0x340 [ 1145.772192] call_rwsem_down_read_failed+0x18/0x30 [ 1145.777134] down_read+0xc3/0x1d0 [ 1145.780600] ? lookup_slow+0x49/0x80 [ 1145.784319] ? __down_interruptible+0x700/0x700 [ 1145.788991] ? lookup_fast+0x470/0x12a0 [ 1145.792968] ? __follow_mount_rcu.isra.35.part.36+0x890/0x890 [ 1145.798859] lookup_slow+0x49/0x80 [ 1145.802399] walk_component+0x94a/0x2630 [ 1145.806484] ? inode_permission+0xb2/0x560 [ 1145.810718] ? path_init+0x1fc0/0x1fc0 [ 1145.814620] ? walk_component+0x2630/0x2630 [ 1145.818940] ? save_stack+0xa9/0xd0 [ 1145.822654] ? save_stack+0x43/0xd0 [ 1145.826277] ? kmem_cache_alloc+0x12e/0x760 [ 1145.830599] ? getname_flags+0xd0/0x5a0 [ 1145.834569] ? user_path_at_empty+0x2d/0x50 [ 1145.838902] ? vfs_statx+0x129/0x210 [ 1145.842613] path_lookupat.isra.45+0x212/0xc00 [ 1145.847202] ? path_parentat.isra.43+0x160/0x160 [ 1145.851961] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 1145.857154] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 1145.862179] ? __check_object_size+0xa3/0x5d7 [ 1145.866682] ? usercopy_warn+0x120/0x120 [ 1145.870748] ? kasan_check_read+0x11/0x20 [ 1145.874903] ? do_raw_spin_unlock+0xa7/0x2f0 [ 1145.879338] filename_lookup+0x264/0x510 [ 1145.883412] ? filename_parentat.isra.58+0x570/0x570 [ 1145.888536] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1145.894091] ? mpi_free.cold.1+0x19/0x19 [ 1145.898164] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1145.903720] ? getname_flags+0x26e/0x5a0 [ 1145.907789] user_path_at_empty+0x40/0x50 [ 1145.911981] vfs_statx+0x129/0x210 [ 1145.915544] ? vfs_statx_fd+0xc0/0xc0 [ 1145.919354] __do_sys_newlstat+0x8f/0x110 [ 1145.923602] ? __do_sys_newstat+0x110/0x110 [ 1145.928036] ? finish_task_switch+0x18a/0x870 [ 1145.932622] ? kasan_check_read+0x11/0x20 [ 1145.936778] ? do_raw_spin_unlock+0xa7/0x2f0 [ 1145.941186] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 1145.945804] ? compat_start_thread+0x80/0x80 [ 1145.950225] __x64_sys_newlstat+0x54/0x80 [ 1145.954396] do_syscall_64+0x1b9/0x820 [ 1145.958294] ? syscall_return_slowpath+0x5e0/0x5e0 [ 1145.963225] ? syscall_return_slowpath+0x31d/0x5e0 [ 1145.968165] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 1145.973186] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1145.978035] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1145.983234] RIP: 0033:0x456a09 [ 1145.986420] Code: 07 48 83 c7 10 0f 10 06 48 83 c6 10 0f 11 07 48 83 c7 10 0f 10 06 48 83 c6 10 0f 11 07 48 83 c7 10 0f 10 06 48 83 c6 10 0f 11 <07> 48 83 c7 10 0f 10 06 48 83 c6 10 0f 11 07 48 83 c7 10 0f 10 06 [ 1146.005351] RSP: 002b:00007f50b55bec78 EFLAGS: 00000246 ORIG_RAX: 0000000000000006 [ 1146.013152] RAX: ffffffffffffffda RBX: 00007f50b55bf6d4 RCX: 0000000000456a09 [ 1146.020434] RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000020000000 [ 1146.027728] RBP: 00000000009301e0 R08: 0000000000000000 R09: 0000000000000000 [ 1146.035006] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 1146.042277] R13: 00000000004d14f8 R14: 00000000004c6d78 R15: 0000000000000002 [ 1146.049569] INFO: task syz-executor0:4751 blocked for more than 140 seconds. [ 1146.056757] Not tainted 4.18.0-rc6-next-20180725+ #18 [ 1146.062713] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1146.070679] syz-executor0 D25408 4751 4354 0x00000004 [ 1146.076315] Call Trace: [ 1146.078924] __schedule+0x87c/0x1ed0 [ 1146.082648] ? __sched_text_start+0x8/0x8 [ 1146.086803] ? trace_hardirqs_on+0x10/0x10 [ 1146.091048] ? rcu_note_context_switch+0x730/0x730 [ 1146.095978] ? lock_acquire+0x1e4/0x540 [ 1146.099993] ? trace_hardirqs_on+0x10/0x10 [ 1146.104260] schedule+0xfb/0x450 [ 1146.107646] ? lock_downgrade+0x8f0/0x8f0 [ 1146.111804] ? __schedule+0x1ed0/0x1ed0 [ 1146.115867] ? kasan_check_read+0x11/0x20 [ 1146.120120] ? do_raw_spin_unlock+0xa7/0x2f0 [ 1146.124709] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 1146.129297] ? kasan_check_write+0x14/0x20 [ 1146.133546] ? do_raw_spin_lock+0xc1/0x200 [ 1146.137783] __rwsem_down_write_failed_common+0x95d/0x1630 [ 1146.143417] ? rwsem_spin_on_owner+0xa40/0xa40 [ 1146.148004] ? lock_release+0xa30/0xa30 [ 1146.151988] ? trace_hardirqs_on+0x10/0x10 [ 1146.156237] ? trace_hardirqs_on+0x10/0x10 [ 1146.160485] ? kernel_text_address+0x79/0xf0 [ 1146.164919] ? unwind_get_return_address+0x61/0xa0 [ 1146.169857] ? __save_stack_trace+0x8d/0xf0 [ 1146.174184] ? save_stack+0xa9/0xd0 [ 1146.177813] ? save_stack+0x43/0xd0 [ 1146.181459] ? __kasan_slab_free+0x11a/0x170 [ 1146.185877] ? kasan_slab_free+0xe/0x10 [ 1146.189847] ? kmem_cache_free+0x86/0x2d0 [ 1146.194006] ? putname+0xf2/0x130 [ 1146.197461] ? filename_lookup+0x397/0x510 [ 1146.201885] ? user_path_at_empty+0x40/0x50 [ 1146.206416] ? do_fchmodat+0xa3/0x160 [ 1146.210451] ? __x64_sys_chmod+0x5c/0x80 [ 1146.214791] ? do_syscall_64+0x1b9/0x820 [ 1146.218948] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1146.225229] ? do_raw_spin_unlock+0xa7/0x2f0 [ 1146.229733] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 1146.234426] ? kasan_check_write+0x14/0x20 [ 1146.238930] ? do_raw_spin_lock+0xc1/0x200 [ 1146.243182] ? lock_acquire+0x1e4/0x540 [ 1146.247167] ? chmod_common+0x1b1/0x590 [ 1146.251142] ? mnt_want_write+0x3f/0xc0 [ 1146.255121] ? lock_release+0xa30/0xa30 [ 1146.259140] ? check_same_owner+0x340/0x340 [ 1146.263514] rwsem_down_write_failed+0xe/0x10 [ 1146.268012] ? rwsem_down_write_failed+0xe/0x10 [ 1146.272692] call_rwsem_down_write_failed+0x17/0x30 [ 1146.277710] down_write+0xaa/0x130 [ 1146.281257] ? chmod_common+0x1b1/0x590 [ 1146.285234] ? down_read+0x1d0/0x1d0 [ 1146.288970] ? __sb_start_write+0x17f/0x300 [ 1146.293307] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1146.298852] chmod_common+0x1b1/0x590 [ 1146.302676] ? filp_close+0x250/0x250 [ 1146.306494] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1146.312128] ? getname_flags+0x26e/0x5a0 [ 1146.316211] do_fchmodat+0xc3/0x160 [ 1146.319929] ? __ia32_sys_fchmod+0x80/0x80 [ 1146.324176] ? syscall_slow_exit_work+0x500/0x500 [ 1146.329035] __x64_sys_chmod+0x5c/0x80 [ 1146.333724] do_syscall_64+0x1b9/0x820 [ 1146.337622] ? syscall_return_slowpath+0x5e0/0x5e0 [ 1146.342592] ? syscall_return_slowpath+0x31d/0x5e0 [ 1146.347746] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 1146.352797] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1146.357655] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1146.362852] RIP: 0033:0x456a09 [ 1146.366046] Code: 07 48 83 c7 10 0f 10 06 48 83 c6 10 0f 11 07 48 83 c7 10 0f 10 06 48 83 c6 10 0f 11 07 48 83 c7 10 0f 10 06 48 83 c6 10 0f 11 <07> 48 83 c7 10 0f 10 06 48 83 c6 10 0f 11 07 48 83 c7 10 0f 10 06 [ 1146.385069] RSP: 002b:00007f50b559dc78 EFLAGS: 00000246 ORIG_RAX: 000000000000005a [ 1146.392781] RAX: ffffffffffffffda RBX: 00007f50b559e6d4 RCX: 0000000000456a09 [ 1146.400069] RDX: 0000000000000000 RSI: 0000000000000150 RDI: 0000000020000140 [ 1146.407356] RBP: 0000000000930280 R08: 0000000000000000 R09: 0000000000000000 [ 1146.414652] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 1146.421949] R13: 00000000004ca568 R14: 00000000004c1c78 R15: 0000000000000003 [ 1146.429262] INFO: task syz-executor0:4753 blocked for more than 140 seconds. [ 1146.436469] Not tainted 4.18.0-rc6-next-20180725+ #18 [ 1146.442210] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1146.450330] syz-executor0 D26224 4753 4354 0x00000004 [ 1146.455977] Call Trace: [ 1146.458604] __schedule+0x87c/0x1ed0 [ 1146.462454] ? __sched_text_start+0x8/0x8 [ 1146.466632] ? trace_hardirqs_on+0x10/0x10 [ 1146.470910] ? trace_hardirqs_on+0x10/0x10 [ 1146.475172] ? lookup_fast+0x429/0x12a0 [ 1146.479162] ? lock_downgrade+0x8f0/0x8f0 [ 1146.483305] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1146.488850] schedule+0xfb/0x450 [ 1146.492218] ? lock_downgrade+0x8f0/0x8f0 [ 1146.496369] ? __schedule+0x1ed0/0x1ed0 [ 1146.500339] ? kasan_check_read+0x11/0x20 [ 1146.504502] ? do_raw_spin_unlock+0xa7/0x2f0 [ 1146.508926] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 1146.513519] ? kasan_check_write+0x14/0x20 [ 1146.517759] ? do_raw_spin_lock+0xc1/0x200 [ 1146.522031] rwsem_down_read_failed+0x362/0x600 [ 1146.526740] ? rwsem_down_write_failed_killable+0x10/0x10 [ 1146.532294] ? lock_acquire+0x1e4/0x540 [ 1146.536278] ? lockref_get_not_dead+0x70/0x90 [ 1146.540789] ? lock_acquire+0x1e4/0x540 [ 1146.544776] ? lookup_slow+0x49/0x80 [ 1146.548493] ? lock_release+0xa30/0xa30 [ 1146.552463] ? check_same_owner+0x340/0x340 [ 1146.556801] call_rwsem_down_read_failed+0x18/0x30 [ 1146.561731] down_read+0xc3/0x1d0 [ 1146.565197] ? lookup_slow+0x49/0x80 [ 1146.568933] ? __down_interruptible+0x700/0x700 [ 1146.573618] ? lookup_fast+0x470/0x12a0 [ 1146.577601] ? __follow_mount_rcu.isra.35.part.36+0x890/0x890 [ 1146.583598] lookup_slow+0x49/0x80 [ 1146.587150] walk_component+0x94a/0x2630 [ 1146.591225] ? inode_permission+0xb2/0x560 [ 1146.595467] ? path_init+0x1fc0/0x1fc0 [ 1146.599360] ? walk_component+0x2630/0x2630 [ 1146.603682] ? save_stack+0xa9/0xd0 [ 1146.607306] ? save_stack+0x43/0xd0 [ 1146.610938] ? kmem_cache_alloc+0x12e/0x760 [ 1146.615260] ? getname_flags+0xd0/0x5a0 [ 1146.619236] ? user_path_at_empty+0x2d/0x50 [ 1146.623558] ? vfs_statx+0x129/0x210 [ 1146.627273] path_lookupat.isra.45+0x212/0xc00 [ 1146.631860] ? path_parentat.isra.43+0x160/0x160 [ 1146.636614] ? __sanitizer_cov_trace_switch+0x53/0x90 [ 1146.641810] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 1146.646824] ? __check_object_size+0xa3/0x5d7 [ 1146.651327] ? usercopy_warn+0x120/0x120 [ 1146.655386] ? kasan_check_read+0x11/0x20 [ 1146.659542] ? do_raw_spin_unlock+0xa7/0x2f0 [ 1146.663949] filename_lookup+0x264/0x510 [ 1146.668012] ? filename_parentat.isra.58+0x570/0x570 [ 1146.673111] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1146.678666] ? mpi_free.cold.1+0x19/0x19 [ 1146.682737] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1146.688277] ? getname_flags+0x26e/0x5a0 [ 1146.692338] user_path_at_empty+0x40/0x50 [ 1146.696502] vfs_statx+0x129/0x210 [ 1146.700043] ? vfs_statx_fd+0xc0/0xc0 [ 1146.703846] __do_sys_newlstat+0x8f/0x110 [ 1146.707984] ? __do_sys_newstat+0x110/0x110 [ 1146.713208] ? finish_task_switch+0x18a/0x870 [ 1146.717705] ? kasan_check_read+0x11/0x20 [ 1146.721962] ? do_raw_spin_unlock+0xa7/0x2f0 [ 1146.726372] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 1146.730959] ? compat_start_thread+0x80/0x80 [ 1146.735371] __x64_sys_newlstat+0x54/0x80 [ 1146.739529] do_syscall_64+0x1b9/0x820 [ 1146.743412] ? finish_task_switch+0x1d3/0x870 [ 1146.747911] ? syscall_return_slowpath+0x5e0/0x5e0 [ 1146.753104] ? syscall_return_slowpath+0x31d/0x5e0 [ 1146.758055] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 1146.763108] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 1146.767979] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 1146.773176] RIP: 0033:0x456a09 [ 1146.776385] Code: 07 48 83 c7 10 0f 10 06 48 83 c6 10 0f 11 07 48 83 c7 10 0f 10 06 48 83 c6 10 0f 11 07 48 83 c7 10 0f 10 06 48 83 c6 10 0f 11 <07> 48 83 c7 10 0f 10 06 48 83 c6 10 0f 11 07 48 83 c7 10 0f 10 06 [ 1146.795372] RSP: 002b:00007f50b555bc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000006 [ 1146.803120] RAX: ffffffffffffffda RBX: 00007f50b555c6d4 RCX: 0000000000456a09 [ 1146.810416] RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000020000000 [ 1146.817725] RBP: 00000000009303c0 R08: 0000000000000000 R09: 0000000000000000 [ 1146.825033] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff [ 1146.832322] R13: 00000000004d14f8 R14: 00000000004c6d78 R15: 0000000000000005 [ 1146.839599] INFO: lockdep is turned off. [ 1146.843662] NMI backtrace for cpu 1 [ 1146.847311] CPU: 1 PID: 775 Comm: khungtaskd Not tainted 4.18.0-rc6-next-20180725+ #18 [ 1146.855344] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1146.864689] Call Trace: [ 1146.867327] dump_stack+0x1c9/0x2b4 [ 1146.870937] ? dump_stack_print_info.cold.2+0x52/0x52 [ 1146.876105] ? vprintk_default+0x28/0x30 [ 1146.880157] ? lapic_can_unplug_cpu.cold.28+0x3f/0x3f [ 1146.885326] nmi_cpu_backtrace.cold.3+0x48/0x88 [ 1146.889973] ? lapic_can_unplug_cpu.cold.28+0x3f/0x3f [ 1146.895139] nmi_trigger_cpumask_backtrace+0x151/0x192 [ 1146.900392] arch_trigger_cpumask_backtrace+0x14/0x20 [ 1146.905568] watchdog+0xb39/0x10b0 [ 1146.909088] ? reset_hung_task_detector+0xd0/0xd0 [ 1146.913911] ? kasan_check_read+0x11/0x20 [ 1146.918033] ? do_raw_spin_unlock+0xa7/0x2f0 [ 1146.922514] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 1146.927608] ? __kthread_parkme+0x58/0x1b0 [ 1146.931828] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 1146.936823] ? trace_hardirqs_on+0xd/0x10 [ 1146.941037] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1146.946563] ? __kthread_parkme+0x106/0x1b0 [ 1146.950862] kthread+0x345/0x410 [ 1146.954209] ? reset_hung_task_detector+0xd0/0xd0 [ 1146.959026] ? kthread_bind+0x40/0x40 [ 1146.962804] ret_from_fork+0x3a/0x50 [ 1146.966648] Sending NMI from CPU 1 to CPUs 0: [ 1146.971188] NMI backtrace for cpu 0 skipped: idling at native_safe_halt+0x6/0x10 [ 1146.972152] Kernel panic - not syncing: hung_task: blocked tasks [ 1146.985044] CPU: 1 PID: 775 Comm: khungtaskd Not tainted 4.18.0-rc6-next-20180725+ #18 [ 1146.993084] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1147.002427] Call Trace: [ 1147.005004] dump_stack+0x1c9/0x2b4 [ 1147.008702] ? dump_stack_print_info.cold.2+0x52/0x52 [ 1147.013879] ? printk_safe_log_store+0x2f0/0x2f0 [ 1147.018630] panic+0x238/0x4e7 [ 1147.021810] ? add_taint.cold.5+0x16/0x16 [ 1147.025941] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 1147.031466] ? nmi_trigger_cpumask_backtrace+0x13a/0x192 [ 1147.036897] ? printk_safe_flush+0xd7/0x130 [ 1147.041289] watchdog+0xb4a/0x10b0 [ 1147.044819] ? reset_hung_task_detector+0xd0/0xd0 [ 1147.049646] ? kasan_check_read+0x11/0x20 [ 1147.053782] ? do_raw_spin_unlock+0xa7/0x2f0 [ 1147.058172] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 1147.063251] ? __kthread_parkme+0x58/0x1b0 [ 1147.067467] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 1147.072464] ? trace_hardirqs_on+0xd/0x10 [ 1147.076590] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 1147.082253] ? __kthread_parkme+0x106/0x1b0 [ 1147.086553] kthread+0x345/0x410 [ 1147.089898] ? reset_hung_task_detector+0xd0/0xd0 [ 1147.094717] ? kthread_bind+0x40/0x40 [ 1147.098496] ret_from_fork+0x3a/0x50 [ 1147.102630] Dumping ftrace buffer: [ 1147.106320] (ftrace buffer empty) [ 1147.110017] Kernel Offset: disabled [ 1147.113623] Rebooting in 86400 seconds..