[ 54.670090] bridge0: port 2(bridge_slave_1) entered disabled state [ 54.686210] device bridge_slave_0 left promiscuous mode [ 54.691810] bridge0: port 1(bridge_slave_0) entered disabled state [ 54.731163] team0 (unregistering): Port device team_slave_1 removed [ 54.742914] team0 (unregistering): Port device team_slave_0 removed [ 54.754941] bond0 (unregistering): Releasing backup interface bond_slave_1 [ 54.771333] bond0 (unregistering): Releasing backup interface bond_slave_0 [ 54.802936] bond0 (unregistering): Released all slaves [ 55.620012] random: sshd: uninitialized urandom read (32 bytes read) [ 55.811535] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.1.8' (ECDSA) to the list of known hosts. 2019/11/25 02:23:12 parsed 1 programs 2019/11/25 02:23:12 executed programs: 0 [ 61.870157] IPVS: ftp: loaded support on port[0] = 21 [ 61.877537] IPVS: ftp: loaded support on port[0] = 21 [ 61.882235] IPVS: ftp: loaded support on port[0] = 21 [ 61.889560] IPVS: ftp: loaded support on port[0] = 21 [ 61.905211] IPVS: ftp: loaded support on port[0] = 21 [ 61.917249] IPVS: ftp: loaded support on port[0] = 21 [ 62.406523] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.412968] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.427268] device bridge_slave_0 entered promiscuous mode [ 62.453371] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.459817] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.469303] device bridge_slave_0 entered promiscuous mode [ 62.478797] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.485214] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.492714] device bridge_slave_0 entered promiscuous mode [ 62.501446] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.508066] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.515376] device bridge_slave_0 entered promiscuous mode [ 62.524007] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.530475] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.538630] device bridge_slave_1 entered promiscuous mode [ 62.545880] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.552551] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.564073] device bridge_slave_0 entered promiscuous mode [ 62.572968] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.582851] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.590728] device bridge_slave_1 entered promiscuous mode [ 62.597379] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.604758] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.611982] device bridge_slave_0 entered promiscuous mode [ 62.620180] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.626746] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.634866] device bridge_slave_1 entered promiscuous mode [ 62.642674] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 62.651502] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 62.660122] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.667377] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.678844] device bridge_slave_1 entered promiscuous mode [ 62.685721] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.692137] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.699833] device bridge_slave_1 entered promiscuous mode [ 62.714950] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 62.723714] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 62.734571] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 62.747314] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 62.765116] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 62.773656] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 62.781809] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.788218] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.806368] device bridge_slave_1 entered promiscuous mode [ 62.813355] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 62.822148] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 62.843672] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 62.893583] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 62.921362] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 62.951124] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 62.961923] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 62.972271] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 62.983072] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 62.993506] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 63.005503] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 63.045259] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 63.055595] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 63.068410] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 63.121489] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 63.152895] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 63.160878] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 63.169834] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 63.177378] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 63.195527] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 63.202565] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 63.219504] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 63.274717] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready [ 63.281756] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 63.299699] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 63.307522] team0: Port device team_slave_0 added [ 63.315124] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 63.323616] team0: Port device team_slave_0 added [ 63.330122] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready [ 63.356469] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 63.367648] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 63.375942] team0: Port device team_slave_0 added [ 63.388473] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 63.396151] team0: Port device team_slave_1 added [ 63.401893] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 63.412196] team0: Port device team_slave_1 added [ 63.417810] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 63.425785] team0: Port device team_slave_0 added [ 63.433256] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 63.441462] team0: Port device team_slave_1 added [ 63.447795] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 63.455816] team0: Port device team_slave_0 added [ 63.467856] IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready [ 63.477534] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 63.489979] team0: Port device team_slave_1 added [ 63.497165] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 63.505857] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 63.518471] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 63.530368] team0: Port device team_slave_1 added [ 63.547717] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 63.562489] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 63.572843] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 63.580574] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 63.591256] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 63.598896] team0: Port device team_slave_0 added [ 63.609763] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 63.619440] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 63.634488] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 63.646775] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 63.654527] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 63.662250] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 63.670204] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 63.679867] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 63.687006] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 63.694872] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 63.708645] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 63.717742] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 63.725519] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 63.733647] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 63.742307] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 63.751172] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 63.759147] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 63.767778] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 63.775279] team0: Port device team_slave_1 added [ 63.780873] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 63.788540] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 63.796446] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 63.806652] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 63.814932] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 63.822468] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 63.833137] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 63.841190] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 63.849113] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 63.863049] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 63.880113] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 63.888260] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 63.895307] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 63.906193] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 63.921755] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 63.930439] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 63.951885] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 63.967978] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 63.975693] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 63.989729] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 64.014264] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 64.021732] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 64.033490] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 64.092657] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 64.100078] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 64.109242] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 64.337765] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.344230] bridge0: port 2(bridge_slave_1) entered forwarding state [ 64.350870] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.357343] bridge0: port 1(bridge_slave_0) entered forwarding state [ 64.368707] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 64.377891] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.384480] bridge0: port 2(bridge_slave_1) entered forwarding state [ 64.391116] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.397469] bridge0: port 1(bridge_slave_0) entered forwarding state [ 64.405778] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 64.453408] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.459827] bridge0: port 2(bridge_slave_1) entered forwarding state [ 64.466967] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.473312] bridge0: port 1(bridge_slave_0) entered forwarding state [ 64.481880] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 64.489939] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.496318] bridge0: port 2(bridge_slave_1) entered forwarding state [ 64.503001] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.509400] bridge0: port 1(bridge_slave_0) entered forwarding state [ 64.516937] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 64.554297] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.560720] bridge0: port 2(bridge_slave_1) entered forwarding state [ 64.567352] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.573743] bridge0: port 1(bridge_slave_0) entered forwarding state [ 64.580967] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 64.646954] bridge0: port 2(bridge_slave_1) entered blocking state [ 64.653915] bridge0: port 2(bridge_slave_1) entered forwarding state [ 64.660560] bridge0: port 1(bridge_slave_0) entered blocking state [ 64.666962] bridge0: port 1(bridge_slave_0) entered forwarding state [ 64.676778] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready [ 65.184156] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 65.195498] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 65.206960] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 65.214238] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 65.221673] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 65.229466] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready [ 66.165471] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.207132] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.226813] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.236645] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.302969] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 66.342910] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.363645] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 66.387612] 8021q: adding VLAN 0 to HW filter on device bond0 [ 66.395321] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 66.405838] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 66.469522] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 66.475955] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 66.486756] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 66.529886] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 66.536143] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 66.546924] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 66.561570] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 66.596729] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 66.602987] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 66.614488] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 66.624804] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 66.637040] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 66.645976] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 66.657603] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 66.679655] 8021q: adding VLAN 0 to HW filter on device team0 [ 66.695133] 8021q: adding VLAN 0 to HW filter on device team0 [ 66.754559] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 66.760799] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 66.768187] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 66.787983] 8021q: adding VLAN 0 to HW filter on device team0 [ 66.804085] 8021q: adding VLAN 0 to HW filter on device team0 [ 66.840431] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 66.846718] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 66.855959] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 66.948806] 8021q: adding VLAN 0 to HW filter on device team0 [ 67.030386] 8021q: adding VLAN 0 to HW filter on device team0 [ 68.724882] FAULT_INJECTION: forcing a failure. [ 68.724882] name fail_page_alloc, interval 1, probability 0, space 0, times 1 [ 68.737085] CPU: 1 PID: 5747 Comm: syz-executor2 Not tainted 4.17.0-rc3-syzkaller #0 [ 68.745078] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 68.754445] Call Trace: [ 68.757141] dump_stack+0x162/0x21a [ 68.760763] ? dump_stack_print_info.cold.2+0x48/0x48 [ 68.765956] should_fail.cold.4+0x5/0xd [ 68.769936] ? graph_lock+0x170/0x170 [ 68.773733] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 68.779008] ? __lock_acquire+0x7f5/0x5140 [ 68.783299] ? lock_acquire+0x1dc/0x520 [ 68.787266] ? find_held_lock+0x36/0x1c0 [ 68.792387] ? lock_downgrade+0x8e0/0x8e0 [ 68.796549] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 68.801588] ? kasan_check_read+0x11/0x20 [ 68.806957] ? rcu_is_watching+0x85/0x140 [ 68.809325] FAULT_INJECTION: forcing a failure. [ 68.809325] name failslab, interval 1, probability 0, space 0, times 1 [ 68.811100] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 68.828077] ? rcu_read_lock+0x70/0x70 [ 68.831971] __alloc_pages_nodemask+0x34e/0xd70 [ 68.836643] ? page_remove_rmap+0x4eb/0xe00 [ 68.840955] ? __alloc_pages_slowpath+0x2db0/0x2db0 [ 68.845970] ? debug_check_no_locks_freed+0x310/0x310 [ 68.851283] ? find_held_lock+0x36/0x1c0 [ 68.855443] ? lock_acquire+0x1dc/0x520 [ 68.859433] ? lock_release+0xa10/0xa10 [ 68.863401] ? graph_lock+0x170/0x170 [ 68.867190] alloc_pages_current+0xd6/0x1b0 [ 68.871501] __get_free_pages+0xf/0x40 [ 68.875377] __tlb_remove_page_size+0x26b/0x4d0 [ 68.880059] unmap_page_range+0xc2c/0x1ff0 [ 68.884278] ? __activate_page+0x13b0/0x13b0 [ 68.888681] ? vm_normal_page_pmd+0x330/0x330 [ 68.893164] ? lock_downgrade+0x8e0/0x8e0 [ 68.897487] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 68.901984] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 68.906999] ? graph_lock+0x170/0x170 [ 68.910789] ? trace_hardirqs_off+0xd/0x10 [ 68.915020] ? _raw_spin_unlock_irqrestore+0x63/0xc0 [ 68.920123] ? depot_save_stack+0x26b/0x450 [ 68.924457] ? find_held_lock+0x36/0x1c0 [ 68.928530] ? lock_downgrade+0x8e0/0x8e0 [ 68.932661] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 68.937163] ? uprobe_mmap+0xc10/0xc10 [ 68.941032] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 68.945617] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 68.950721] unmap_single_vma+0x121/0x300 [ 68.954856] unmap_vmas+0xe2/0x190 [ 68.958383] exit_mmap+0x209/0x430 [ 68.961909] ? __ia32_sys_munmap+0x70/0x70 [ 68.966128] ? __khugepaged_exit+0x3a8/0x630 [ 68.970542] ? __might_sleep+0x95/0x190 [ 68.974529] mmput+0x1f4/0x550 [ 68.977709] ? lock_downgrade+0x8e0/0x8e0 [ 68.982312] ? set_mm_exe_file+0x1f0/0x1f0 [ 68.986542] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 68.991140] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 68.995742] ? kasan_check_write+0x14/0x20 [ 68.999976] ? do_raw_spin_lock+0xc1/0x200 [ 69.004205] do_exit+0xd0f/0x22f0 [ 69.007749] ? mm_update_next_owner+0xbd0/0xbd0 [ 69.012405] ? print_usage_bug+0xc0/0xc0 [ 69.016452] ? free_unref_page+0x9d0/0x9d0 [ 69.020675] ? trace_hardirqs_on+0xd/0x10 [ 69.024832] ? kasan_check_write+0x14/0x20 [ 69.029054] ? finish_task_switch+0x59e/0x810 [ 69.033550] ? __lock_acquire+0x7f5/0x5140 [ 69.037917] ? lock_repin_lock+0x410/0x410 [ 69.042276] ? pci_mmcfg_check_reserved+0x120/0x120 [ 69.047822] ? graph_lock+0x170/0x170 [ 69.052232] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 69.056803] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 69.062196] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 69.067814] ? trace_hardirqs_on+0xd/0x10 [ 69.071964] ? find_held_lock+0x36/0x1c0 [ 69.076068] ? graph_lock+0x170/0x170 [ 69.079892] ? memset+0x31/0x40 [ 69.083155] ? find_held_lock+0x36/0x1c0 [ 69.087203] ? recalc_sigpending+0x6a/0x150 [ 69.091510] ? lock_downgrade+0x8e0/0x8e0 [ 69.095661] ? do_signal_stop+0x37a/0x8e0 [ 69.099840] do_group_exit+0x135/0x3b0 [ 69.103779] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 69.108461] ? __ia32_sys_exit+0x50/0x50 [ 69.112511] ? _raw_spin_unlock_irq+0x27/0x70 [ 69.117793] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 69.122801] get_signal+0x6a9/0x1480 [ 69.126509] ? ptrace_notify+0x110/0x110 [ 69.130651] ? kasan_check_write+0x14/0x20 [ 69.134869] ? ldsem_up_read+0x27/0x50 [ 69.138744] ? tty_ldisc_deref+0x30/0x40 [ 69.142808] ? kasan_check_read+0x11/0x20 [ 69.146947] ? rcu_is_watching+0x85/0x140 [ 69.151080] ? rcu_pm_notify+0xc0/0xc0 [ 69.154969] do_signal+0x98/0x2040 [ 69.158497] ? vfs_writev+0x1e9/0x320 [ 69.162284] ? setup_sigcontext+0x7d0/0x7d0 [ 69.166591] ? wait_for_completion+0x870/0x870 [ 69.171205] ? exit_to_usermode_loop+0x8a/0x2a0 [ 69.175866] exit_to_usermode_loop+0x1bf/0x2a0 [ 69.180523] ? vfs_writev+0x320/0x320 [ 69.184307] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 69.189139] do_syscall_64+0x573/0x6e0 [ 69.193015] ? finish_task_switch+0x1ca/0x810 [ 69.197498] ? syscall_return_slowpath+0x4c0/0x4c0 [ 69.202498] ? syscall_return_slowpath+0x20c/0x4c0 [ 69.207417] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 69.212790] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 69.217720] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 69.222896] RIP: 0033:0x455b59 [ 69.226165] RSP: 002b:00007f15bba38c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 69.233860] RAX: fffffffffffffe00 RBX: 00007f15bba396d4 RCX: 0000000000455b59 [ 69.241115] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 69.248369] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 69.255631] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 69.263408] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 69.270688] CPU: 0 PID: 5749 Comm: syz-executor Not tainted 4.17.0-rc3-syzkaller #0 [ 69.275556] FAULT_INJECTION: forcing a failure. [ 69.275556] name fail_futex, interval 1, probability 0, space 0, times 1 [ 69.278492] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.278496] Call Trace: [ 69.278509] dump_stack+0x162/0x21a [ 69.278519] ? dump_stack_print_info.cold.2+0x48/0x48 [ 69.310889] should_fail.cold.4+0x5/0xd [ 69.314854] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 69.320550] ? graph_lock+0x170/0x170 [ 69.324333] ? debug_check_no_locks_freed+0x310/0x310 [ 69.329525] ? debug_check_no_locks_freed+0x310/0x310 [ 69.334713] ? task_numa_work+0xef0/0xef0 [ 69.338850] ? find_held_lock+0x36/0x1c0 [ 69.342909] ? check_same_owner+0x320/0x320 [ 69.347230] ? rcu_note_context_switch+0x710/0x710 [ 69.352150] __should_failslab+0xba/0xf0 [ 69.356204] should_failslab+0x9/0x14 [ 69.360009] kmem_cache_alloc+0x2af/0x760 [ 69.364158] ? find_held_lock+0x36/0x1c0 [ 69.368211] taskstats_exit+0x6fd/0x1040 [ 69.372262] ? taskstats_user_cmd+0x11d0/0x11d0 [ 69.376921] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 69.381403] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 69.385987] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 69.391005] ? trace_hardirqs_on+0xd/0x10 [ 69.395161] ? _raw_spin_unlock_irq+0x27/0x70 [ 69.399996] ? acct_collect+0x64f/0x7c0 [ 69.403958] ? trace_hardirqs_on+0xd/0x10 [ 69.409136] do_exit+0x47a/0x22f0 [ 69.414054] ? lock_downgrade+0x8e0/0x8e0 [ 69.418195] ? finish_task_switch+0x182/0x810 [ 69.422675] ? mm_update_next_owner+0xbd0/0xbd0 [ 69.427344] ? print_usage_bug+0xc0/0xc0 [ 69.431403] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 69.435886] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 69.440453] ? compat_start_thread+0x80/0x80 [ 69.444843] ? _raw_spin_unlock_irq+0x27/0x70 [ 69.449325] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 69.454327] ? trace_hardirqs_on+0xd/0x10 [ 69.458466] ? _raw_spin_unlock_irq+0x27/0x70 [ 69.462946] ? finish_task_switch+0x1ca/0x810 [ 69.467424] ? finish_task_switch+0x182/0x810 [ 69.472017] ? __lock_acquire+0x7f5/0x5140 [ 69.476939] ? lock_repin_lock+0x410/0x410 [ 69.481167] ? debug_check_no_locks_freed+0x310/0x310 [ 69.486347] ? pci_mmcfg_check_reserved+0x120/0x120 [ 69.491344] ? graph_lock+0x170/0x170 [ 69.495143] ? graph_lock+0x170/0x170 [ 69.498932] ? graph_lock+0x170/0x170 [ 69.502716] ? __mutex_lock+0x95d/0x17f0 [ 69.507109] ? graph_lock+0x170/0x170 [ 69.510915] ? find_held_lock+0x36/0x1c0 [ 69.515397] ? graph_lock+0x170/0x170 [ 69.519188] ? memset+0x31/0x40 [ 69.522453] ? find_held_lock+0x36/0x1c0 [ 69.526502] ? recalc_sigpending+0x6a/0x150 [ 69.530829] ? lock_downgrade+0x8e0/0x8e0 [ 69.534968] ? do_signal_stop+0x37a/0x8e0 [ 69.539132] do_group_exit+0x135/0x3b0 [ 69.543012] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 69.547670] ? __ia32_sys_exit+0x50/0x50 [ 69.551716] ? _raw_spin_unlock_irq+0x27/0x70 [ 69.556196] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 69.561985] get_signal+0x6a9/0x1480 [ 69.565691] ? ptrace_notify+0x110/0x110 [ 69.570011] ? kasan_check_write+0x14/0x20 [ 69.574333] ? ldsem_up_read+0x27/0x50 [ 69.578215] ? tty_ldisc_deref+0x30/0x40 [ 69.582263] ? kasan_check_read+0x11/0x20 [ 69.586833] ? rcu_is_watching+0x85/0x140 [ 69.590964] ? rcu_pm_notify+0xc0/0xc0 [ 69.594946] do_signal+0x98/0x2040 [ 69.598505] ? vfs_writev+0x1e9/0x320 [ 69.602295] ? setup_sigcontext+0x7d0/0x7d0 [ 69.606603] ? wait_for_completion+0x870/0x870 [ 69.611195] ? exit_to_usermode_loop+0x8a/0x2a0 [ 69.615941] exit_to_usermode_loop+0x1bf/0x2a0 [ 69.620510] ? vfs_writev+0x320/0x320 [ 69.624293] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 69.629124] do_syscall_64+0x573/0x6e0 [ 69.632995] ? syscall_return_slowpath+0x4c0/0x4c0 [ 69.637911] ? syscall_return_slowpath+0x20c/0x4c0 [ 69.642834] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 69.648183] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 69.653023] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 69.658199] RIP: 0033:0x455b59 [ 69.661372] RSP: 002b:00007f4020685c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 69.669074] RAX: fffffffffffffe00 RBX: 00007f40206866d4 RCX: 0000000000455b59 2019/11/25 02:23:20 executed programs: 6 [ 69.676332] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 69.683595] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 69.690869] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 69.698131] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 69.705405] CPU: 1 PID: 5751 Comm: syz-executor5 Not tainted 4.17.0-rc3-syzkaller #0 [ 69.713382] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.716212] FAULT_INJECTION: forcing a failure. [ 69.716212] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 69.723348] Call Trace: [ 69.723362] dump_stack+0x162/0x21a [ 69.723369] ? dump_stack_print_info.cold.2+0x48/0x48 [ 69.723378] ? graph_lock+0x170/0x170 [ 69.723392] should_fail.cold.4+0x5/0xd [ 69.754283] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 69.759380] ? __lock_acquire+0x7f5/0x5140 [ 69.763617] ? debug_check_no_locks_freed+0x310/0x310 [ 69.768802] ? print_usage_bug+0xc0/0xc0 [ 69.772855] ? __lock_acquire+0x7f5/0x5140 [ 69.777098] ? update_nohz_stats+0x136/0x200 [ 69.781501] ? update_blocked_averages+0x1750/0x1750 [ 69.787659] ? task_prio+0x50/0x50 [ 69.791192] get_futex_key+0x2c3/0x1d10 [ 69.795151] ? update_sd_lb_stats+0x44e/0x2c30 [ 69.799736] ? futex_lock_pi_atomic+0x2a0/0x2a0 [ 69.804563] ? rb_erase_cached+0xc6a/0x32a0 [ 69.808962] ? rb_next+0x140/0x140 [ 69.812574] ? update_group_capacity+0xd20/0xd20 [ 69.817316] ? attach_entity_load_avg+0x850/0x850 [ 69.822151] ? debug_check_no_locks_freed+0x310/0x310 [ 69.827326] ? __lock_acquire+0x7f5/0x5140 [ 69.831570] ? __lock_acquire+0x7f5/0x5140 [ 69.835885] ? check_noncircular+0x20/0x20 [ 69.840113] ? print_usage_bug+0xc0/0xc0 [ 69.844354] ? find_busiest_group+0xf8/0x1c60 [ 69.848832] ? update_load_avg+0x2d9/0x2570 [ 69.853137] ? print_usage_bug+0xc0/0xc0 [ 69.857186] ? print_usage_bug+0xc0/0xc0 [ 69.861234] ? __lock_acquire+0x7f5/0x5140 [ 69.865453] ? graph_lock+0x170/0x170 [ 69.869240] ? graph_lock+0x170/0x170 [ 69.873045] ? graph_lock+0x170/0x170 [ 69.876834] ? __lock_acquire+0x7f5/0x5140 [ 69.881093] ? debug_check_no_locks_freed+0x310/0x310 [ 69.886276] ? print_usage_bug+0xc0/0xc0 [ 69.890332] ? __update_load_avg_blocked_se.isra.33+0x460/0x460 [ 69.896423] ? print_usage_bug+0xc0/0xc0 [ 69.900478] ? print_usage_bug+0xc0/0xc0 [ 69.904529] ? print_usage_bug+0xc0/0xc0 [ 69.908589] ? update_load_avg+0x2d9/0x2570 [ 69.912897] ? update_load_avg+0x2d9/0x2570 [ 69.917226] futex_wake+0x15c/0x890 [ 69.920845] ? get_futex_key+0x1d10/0x1d10 [ 69.925063] ? __lock_acquire+0x7f5/0x5140 [ 69.929298] ? __lock_acquire+0x7f5/0x5140 [ 69.933536] do_futex+0x890/0x2620 [ 69.941575] ? debug_check_no_locks_freed+0x310/0x310 [ 69.946763] ? __lock_acquire+0x7f5/0x5140 [ 69.950997] ? exit_robust_list+0x1b0/0x1b0 [ 69.955395] ? debug_check_no_locks_freed+0x310/0x310 [ 69.960589] ? graph_lock+0x170/0x170 [ 69.964707] ? debug_check_no_locks_freed+0x310/0x310 [ 69.969884] ? graph_lock+0x170/0x170 [ 69.973670] ? task_numa_work+0xef0/0xef0 [ 69.979034] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 69.984386] ? graph_lock+0x170/0x170 [ 69.988523] ? find_held_lock+0x36/0x1c0 [ 69.992769] ? graph_lock+0x170/0x170 [ 69.996562] ? find_held_lock+0x36/0x1c0 [ 70.000624] ? find_held_lock+0x36/0x1c0 [ 70.004689] ? find_held_lock+0x36/0x1c0 [ 70.008745] ? lock_downgrade+0x8e0/0x8e0 [ 70.012900] ? lock_release+0xa10/0xa10 [ 70.016861] ? check_same_owner+0x320/0x320 [ 70.021255] ? __might_sleep+0x95/0x190 [ 70.025219] ? native_load_gs_index+0x2d/0x30 [ 70.029707] ? __might_sleep+0x95/0x190 [ 70.033679] mm_release+0x3ec/0x540 [ 70.037293] ? mm_access+0x120/0x120 [ 70.040996] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 70.046001] ? trace_hardirqs_on+0xd/0x10 [ 70.050148] ? _raw_spin_unlock_irq+0x27/0x70 [ 70.054631] ? acct_collect+0x64f/0x7c0 [ 70.059321] ? trace_hardirqs_on+0xd/0x10 [ 70.063466] do_exit+0x4b5/0x22f0 [ 70.066942] ? lock_downgrade+0x8e0/0x8e0 [ 70.071599] ? finish_task_switch+0x182/0x810 [ 70.076118] ? mm_update_next_owner+0xbd0/0xbd0 [ 70.080776] ? print_usage_bug+0xc0/0xc0 [ 70.084840] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 70.089345] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 70.093930] ? compat_start_thread+0x80/0x80 [ 70.098334] ? _raw_spin_unlock_irq+0x27/0x70 [ 70.102815] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 70.107922] ? trace_hardirqs_on+0xd/0x10 [ 70.112677] ? _raw_spin_unlock_irq+0x27/0x70 [ 70.117156] ? finish_task_switch+0x1ca/0x810 [ 70.121669] ? finish_task_switch+0x182/0x810 [ 70.126183] ? __lock_acquire+0x7f5/0x5140 [ 70.131207] ? lock_repin_lock+0x410/0x410 [ 70.135444] ? debug_check_no_locks_freed+0x310/0x310 [ 70.140712] ? pci_mmcfg_check_reserved+0x120/0x120 [ 70.145722] ? graph_lock+0x170/0x170 [ 70.149517] ? set_next_entity+0x2ae/0xaf0 [ 70.153742] ? debug_check_no_locks_freed+0x310/0x310 [ 70.158929] ? __mutex_lock+0x95d/0x17f0 [ 70.163001] ? update_load_avg+0x2570/0x2570 [ 70.167401] ? __enqueue_entity+0x10d/0x1f0 [ 70.171806] ? find_held_lock+0x36/0x1c0 [ 70.175876] ? graph_lock+0x170/0x170 [ 70.179697] ? memset+0x31/0x40 [ 70.182980] ? find_held_lock+0x36/0x1c0 [ 70.187041] ? recalc_sigpending+0x6a/0x150 [ 70.191352] ? lock_downgrade+0x8e0/0x8e0 [ 70.196118] ? do_signal_stop+0x37a/0x8e0 [ 70.200272] do_group_exit+0x135/0x3b0 [ 70.204145] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 70.208714] ? __ia32_sys_exit+0x50/0x50 [ 70.213283] ? _raw_spin_unlock_irq+0x27/0x70 [ 70.217763] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 70.222770] get_signal+0x6a9/0x1480 [ 70.226474] ? ptrace_notify+0x110/0x110 [ 70.230546] ? __schedule+0x809/0x1e30 [ 70.234433] ? pci_mmcfg_check_reserved+0x120/0x120 [ 70.239448] do_signal+0x98/0x2040 [ 70.242982] ? vfs_writev+0x1e9/0x320 [ 70.246772] ? setup_sigcontext+0x7d0/0x7d0 [ 70.251194] ? wait_for_completion+0x870/0x870 [ 70.255776] ? schedule+0xef/0x430 [ 70.259393] ? __schedule+0x1e30/0x1e30 [ 70.263364] ? exit_to_usermode_loop+0x8a/0x2a0 [ 70.268023] exit_to_usermode_loop+0x1bf/0x2a0 [ 70.272596] ? vfs_writev+0x320/0x320 [ 70.276386] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 70.281239] do_syscall_64+0x573/0x6e0 [ 70.285115] ? syscall_return_slowpath+0x4c0/0x4c0 [ 70.290133] ? syscall_return_slowpath+0x20c/0x4c0 [ 70.295068] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 70.300506] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 70.305374] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 70.310553] RIP: 0033:0x455b59 [ 70.313731] RSP: 002b:00007f7244173c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 70.321451] RAX: fffffffffffffe00 RBX: 00007f72441746d4 RCX: 0000000000455b59 [ 70.328714] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 70.335973] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 70.343242] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 70.350498] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 70.357790] CPU: 0 PID: 5753 Comm: syz-executor4 Not tainted 4.17.0-rc3-syzkaller #0 [ 70.358150] FAULT_INJECTION: forcing a failure. [ 70.358150] name fail_futex, interval 1, probability 0, space 0, times 0 [ 70.365702] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.365707] Call Trace: [ 70.365725] dump_stack+0x162/0x21a [ 70.365733] ? dump_stack_print_info.cold.2+0x48/0x48 [ 70.365740] ? graph_lock+0x170/0x170 [ 70.365750] should_fail.cold.4+0x5/0xd [ 70.365753] ? graph_lock+0x170/0x170 [ 70.365759] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 70.365764] ? __lock_acquire+0x7f5/0x5140 [ 70.365772] ? lock_acquire+0x1dc/0x520 [ 70.422805] ? find_held_lock+0x36/0x1c0 [ 70.426861] ? lock_downgrade+0x8e0/0x8e0 [ 70.430998] ? kasan_check_read+0x11/0x20 [ 70.435134] ? rcu_is_watching+0x85/0x140 [ 70.439276] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 70.444453] ? rcu_read_lock+0x70/0x70 [ 70.448340] __alloc_pages_nodemask+0x34e/0xd70 [ 70.453004] ? page_remove_rmap+0x4eb/0xe00 [ 70.457317] ? __alloc_pages_slowpath+0x2db0/0x2db0 [ 70.462335] ? __lock_acquire+0x7f5/0x5140 [ 70.466553] ? __lock_acquire+0x7f5/0x5140 [ 70.470773] ? update_load_avg+0x2d9/0x2570 [ 70.475080] ? print_usage_bug+0xc0/0xc0 [ 70.480783] ? lock_acquire+0x1dc/0x520 [ 70.484745] ? lock_release+0xa10/0xa10 [ 70.488708] alloc_pages_current+0xd6/0x1b0 [ 70.493018] __get_free_pages+0xf/0x40 [ 70.496893] __tlb_remove_page_size+0x26b/0x4d0 [ 70.501547] unmap_page_range+0xc2c/0x1ff0 [ 70.505794] ? vm_normal_page_pmd+0x330/0x330 [ 70.510273] ? kasan_check_read+0x11/0x20 [ 70.514409] ? rcu_is_watching+0x85/0x140 [ 70.518543] ? kasan_check_read+0x11/0x20 [ 70.522692] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 70.527867] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 70.533127] ? __lock_acquire+0x7f5/0x5140 [ 70.537624] ? is_bpf_text_address+0x81/0xe0 [ 70.542019] ? kernel_text_address+0x79/0xf0 [ 70.546411] ? __unwind_start+0x166/0x330 [ 70.550545] ? unwind_get_return_address+0x61/0xa0 [ 70.555461] ? __save_stack_trace+0x7e/0xd0 [ 70.559773] ? save_stack+0xa9/0xd0 [ 70.563383] ? save_stack+0x43/0xd0 [ 70.566992] ? __kasan_slab_free+0x11a/0x170 [ 70.571473] ? kmem_cache_free+0x86/0x2d0 [ 70.575622] ? __khugepaged_exit+0x39a/0x630 [ 70.580058] ? mmput+0x429/0x550 [ 70.583427] ? do_exit+0xd0f/0x22f0 [ 70.587650] ? do_group_exit+0x135/0x3b0 [ 70.591698] ? get_signal+0x6a9/0x1480 [ 70.595570] ? do_signal+0x98/0x2040 [ 70.599277] ? exit_to_usermode_loop+0x1bf/0x2a0 [ 70.604030] ? do_syscall_64+0x573/0x6e0 [ 70.608087] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 70.613439] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 70.617932] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 70.622504] ? kasan_check_write+0x14/0x20 [ 70.626721] ? do_raw_spin_lock+0xc1/0x200 [ 70.630959] ? uprobe_mmap+0xc10/0xc10 [ 70.634835] ? trace_hardirqs_off+0xd/0x10 [ 70.639060] ? _raw_spin_unlock_irqrestore+0x63/0xc0 [ 70.644151] ? debug_check_no_obj_freed+0x2ff/0x584 [ 70.649157] ? kasan_check_read+0x11/0x20 [ 70.653296] unmap_single_vma+0x121/0x300 [ 70.657608] unmap_vmas+0xe2/0x190 [ 70.661136] exit_mmap+0x209/0x430 [ 70.664673] ? __ia32_sys_munmap+0x70/0x70 [ 70.668891] ? __khugepaged_exit+0x3a8/0x630 [ 70.673296] ? __might_sleep+0x95/0x190 [ 70.677257] mmput+0x1f4/0x550 [ 70.680608] ? lock_downgrade+0x8e0/0x8e0 [ 70.684738] ? set_mm_exe_file+0x1f0/0x1f0 [ 70.688960] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 70.693440] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 70.698011] ? kasan_check_write+0x14/0x20 [ 70.702232] ? do_raw_spin_lock+0xc1/0x200 [ 70.706456] do_exit+0xd0f/0x22f0 [ 70.709902] ? mm_update_next_owner+0xbd0/0xbd0 [ 70.714649] ? print_usage_bug+0xc0/0xc0 [ 70.718712] ? __lock_acquire+0x7f5/0x5140 [ 70.722941] ? print_usage_bug+0xc0/0xc0 [ 70.726992] ? __lock_acquire+0x7f5/0x5140 [ 70.731211] ? debug_check_no_locks_freed+0x310/0x310 [ 70.736399] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 70.740878] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 70.745449] ? graph_lock+0x170/0x170 [ 70.749519] ? graph_lock+0x170/0x170 [ 70.753315] ? graph_lock+0x170/0x170 [ 70.757098] ? _raw_spin_unlock+0x22/0x30 [ 70.761249] ? __mutex_lock+0x95d/0x17f0 [ 70.765299] ? graph_lock+0x170/0x170 [ 70.769087] ? graph_lock+0x170/0x170 [ 70.772879] ? graph_lock+0x170/0x170 [ 70.776666] ? graph_lock+0x170/0x170 [ 70.780456] ? print_usage_bug+0xc0/0xc0 [ 70.784505] ? memset+0x31/0x40 [ 70.787770] ? find_held_lock+0x36/0x1c0 [ 70.791818] ? recalc_sigpending+0x6a/0x150 [ 70.796136] ? lock_downgrade+0x8e0/0x8e0 [ 70.800274] do_group_exit+0x135/0x3b0 [ 70.804147] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 70.808732] ? __ia32_sys_exit+0x50/0x50 [ 70.812777] ? _raw_spin_unlock_irq+0x27/0x70 [ 70.817259] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 70.822263] get_signal+0x6a9/0x1480 [ 70.825968] ? ptrace_notify+0x110/0x110 [ 70.830015] ? kasan_check_write+0x14/0x20 [ 70.834234] ? ldsem_up_read+0x27/0x50 [ 70.838129] ? tty_ldisc_deref+0x30/0x40 [ 70.842193] ? kasan_check_read+0x11/0x20 [ 70.846338] ? rcu_is_watching+0x85/0x140 [ 70.850474] ? rcu_pm_notify+0xc0/0xc0 [ 70.854375] do_signal+0x98/0x2040 [ 70.857909] ? vfs_writev+0x1e9/0x320 [ 70.861701] ? setup_sigcontext+0x7d0/0x7d0 [ 70.866633] ? wait_for_completion+0x870/0x870 [ 70.871222] ? exit_to_usermode_loop+0x8a/0x2a0 [ 70.875878] exit_to_usermode_loop+0x1bf/0x2a0 [ 70.880803] ? vfs_writev+0x320/0x320 [ 70.885291] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 70.890123] do_syscall_64+0x573/0x6e0 [ 70.893995] ? finish_task_switch+0x1ca/0x810 [ 70.898478] ? syscall_return_slowpath+0x4c0/0x4c0 [ 70.903391] ? syscall_return_slowpath+0x20c/0x4c0 [ 70.908319] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 70.913671] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 70.918501] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 70.923678] RIP: 0033:0x455b59 [ 70.926853] RSP: 002b:00007f6347782c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 70.934637] RAX: fffffffffffffe00 RBX: 00007f63477836d4 RCX: 0000000000455b59 [ 70.941916] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 70.949197] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 70.956452] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 70.963724] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 70.971012] CPU: 1 PID: 5745 Comm: syz-executor3 Not tainted 4.17.0-rc3-syzkaller #0 [ 70.978997] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.988618] Call Trace: [ 70.991210] dump_stack+0x162/0x21a [ 70.994856] ? dump_stack_print_info.cold.2+0x48/0x48 [ 71.000044] ? graph_lock+0x170/0x170 [ 71.003889] should_fail.cold.4+0x5/0xd [ 71.007871] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 71.012984] ? __lock_acquire+0x7f5/0x5140 [ 71.017234] ? print_usage_bug+0xc0/0xc0 [ 71.021332] ? rb_erase_cached+0xc6a/0x32a0 [ 71.025647] ? __lock_acquire+0x7f5/0x5140 [ 71.030034] ? rb_next+0x140/0x140 [ 71.033572] ? __lock_acquire+0x7f5/0x5140 [ 71.037819] ? check_noncircular+0x20/0x20 [ 71.042060] ? __lock_acquire+0x7f5/0x5140 [ 71.046314] get_futex_key+0x2c3/0x1d10 [ 71.050290] ? graph_lock+0x170/0x170 [ 71.054094] ? __lock_acquire+0x7f5/0x5140 [ 71.058327] ? __lock_acquire+0x7f5/0x5140 [ 71.062571] ? futex_lock_pi_atomic+0x2a0/0x2a0 [ 71.067247] ? print_usage_bug+0xc0/0xc0 [ 71.071318] ? debug_check_no_locks_freed+0x310/0x310 [ 71.076625] ? graph_lock+0x170/0x170 [ 71.080435] ? print_usage_bug+0xc0/0xc0 [ 71.084491] ? lock_downgrade+0x8e0/0x8e0 [ 71.088639] ? graph_lock+0x170/0x170 [ 71.092437] ? find_held_lock+0x36/0x1c0 [ 71.096502] ? check_noncircular+0x20/0x20 [ 71.100763] ? graph_lock+0x170/0x170 [ 71.104566] ? lock_downgrade+0x8e0/0x8e0 [ 71.108717] ? find_held_lock+0x36/0x1c0 [ 71.113037] ? lock_downgrade+0x8e0/0x8e0 [ 71.117198] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 71.121706] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 71.126300] ? kasan_check_write+0x14/0x20 [ 71.130544] ? __free_pages_ok+0x1b70/0x2bd0 [ 71.134968] ? print_usage_bug+0xc0/0xc0 [ 71.139049] ? trace_hardirqs_on+0xd/0x10 [ 71.143199] ? print_usage_bug+0xc0/0xc0 [ 71.147288] ? print_usage_bug+0xc0/0xc0 [ 71.151352] ? print_usage_bug+0xc0/0xc0 [ 71.155504] futex_wake+0x15c/0x890 [ 71.159138] ? get_futex_key+0x1d10/0x1d10 [ 71.163375] ? __lock_acquire+0x7f5/0x5140 [ 71.167639] ? __lock_acquire+0x7f5/0x5140 [ 71.171889] do_futex+0x890/0x2620 [ 71.175428] ? debug_check_no_locks_freed+0x310/0x310 [ 71.180617] ? __lock_acquire+0x7f5/0x5140 [ 71.184848] ? find_held_lock+0x36/0x1c0 [ 71.188926] ? exit_robust_list+0x1b0/0x1b0 [ 71.193258] ? debug_check_no_locks_freed+0x310/0x310 [ 71.198450] ? graph_lock+0x170/0x170 [ 71.202250] ? debug_check_no_locks_freed+0x310/0x310 [ 71.207440] ? graph_lock+0x170/0x170 [ 71.211235] ? __lock_acquire+0x7f5/0x5140 [ 71.215464] ? __lock_is_held+0xb5/0x140 [ 71.219522] ? graph_lock+0x170/0x170 [ 71.223317] ? find_held_lock+0x36/0x1c0 [ 71.227374] ? graph_lock+0x170/0x170 [ 71.231180] ? find_held_lock+0x36/0x1c0 [ 71.235258] ? find_held_lock+0x36/0x1c0 [ 71.239492] ? find_held_lock+0x36/0x1c0 [ 71.243664] ? lock_downgrade+0x8e0/0x8e0 [ 71.247833] ? lock_release+0xa10/0xa10 [ 71.252090] ? check_same_owner+0x320/0x320 [ 71.256427] ? __might_sleep+0x95/0x190 [ 71.261016] ? native_load_gs_index+0x2d/0x30 [ 71.265516] ? __might_sleep+0x95/0x190 [ 71.269489] mm_release+0x3ec/0x540 [ 71.273117] ? mm_access+0x120/0x120 [ 71.276830] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 71.281840] ? trace_hardirqs_on+0xd/0x10 [ 71.285983] ? _raw_spin_unlock_irq+0x27/0x70 [ 71.290476] ? acct_collect+0x64f/0x7c0 [ 71.294451] ? trace_hardirqs_on+0xd/0x10 [ 71.298615] do_exit+0x4b5/0x22f0 [ 71.302075] ? mm_update_next_owner+0xbd0/0xbd0 [ 71.306745] ? print_usage_bug+0xc0/0xc0 [ 71.310822] ? free_unref_page+0x9d0/0x9d0 [ 71.315061] ? trace_hardirqs_on+0xd/0x10 [ 71.319225] ? kasan_check_write+0x14/0x20 [ 71.323460] ? finish_task_switch+0x59e/0x810 [ 71.327962] ? __lock_acquire+0x7f5/0x5140 [ 71.332283] ? lock_repin_lock+0x410/0x410 [ 71.336542] ? debug_check_no_locks_freed+0x310/0x310 [ 71.341736] ? pci_mmcfg_check_reserved+0x120/0x120 [ 71.346747] ? graph_lock+0x170/0x170 [ 71.350539] ? graph_lock+0x170/0x170 [ 71.354334] ? graph_lock+0x170/0x170 [ 71.358129] ? __mutex_lock+0x95d/0x17f0 [ 71.362194] ? graph_lock+0x170/0x170 [ 71.365998] ? find_held_lock+0x36/0x1c0 [ 71.370700] ? graph_lock+0x170/0x170 [ 71.374504] ? memset+0x31/0x40 [ 71.377778] ? find_held_lock+0x36/0x1c0 [ 71.381838] ? recalc_sigpending+0x6a/0x150 [ 71.386158] ? lock_downgrade+0x8e0/0x8e0 [ 71.390325] ? do_signal_stop+0x37a/0x8e0 [ 71.394499] do_group_exit+0x135/0x3b0 [ 71.398388] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 71.402977] ? __ia32_sys_exit+0x50/0x50 [ 71.407047] ? _raw_spin_unlock_irq+0x27/0x70 [ 71.411554] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 71.416588] get_signal+0x6a9/0x1480 [ 71.420310] ? ptrace_notify+0x110/0x110 [ 71.424391] ? kasan_check_write+0x14/0x20 [ 71.428618] ? ldsem_up_read+0x27/0x50 [ 71.432499] ? tty_ldisc_deref+0x30/0x40 [ 71.436554] ? kasan_check_read+0x11/0x20 [ 71.440701] ? rcu_is_watching+0x85/0x140 [ 71.444849] ? rcu_pm_notify+0xc0/0xc0 [ 71.448754] do_signal+0x98/0x2040 [ 71.452294] ? vfs_writev+0x1e9/0x320 [ 71.456091] ? setup_sigcontext+0x7d0/0x7d0 [ 71.460404] ? wait_for_completion+0x870/0x870 [ 71.465000] ? schedule+0xef/0x430 [ 71.468551] ? exit_to_usermode_loop+0x8a/0x2a0 [ 71.473395] exit_to_usermode_loop+0x1bf/0x2a0 [ 71.477973] ? vfs_writev+0x320/0x320 [ 71.481789] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 71.486637] do_syscall_64+0x573/0x6e0 [ 71.490556] ? syscall_return_slowpath+0x4c0/0x4c0 [ 71.495491] ? syscall_return_slowpath+0x20c/0x4c0 [ 71.500436] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 71.505941] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 71.511094] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 71.516292] RIP: 0033:0x455b59 [ 71.519487] RSP: 002b:00007efee9daec68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 71.527298] RAX: fffffffffffffe00 RBX: 00007efee9daf6d4 RCX: 0000000000455b59 [ 71.535185] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 71.542469] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 71.549747] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 71.557276] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 71.982372] FAULT_INJECTION: forcing a failure. [ 71.982372] name fail_futex, interval 1, probability 0, space 0, times 0 [ 71.993897] CPU: 0 PID: 5772 Comm: syz-executor2 Not tainted 4.17.0-rc3-syzkaller #0 [ 72.001990] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.011342] Call Trace: [ 72.013991] dump_stack+0x162/0x21a [ 72.017634] ? dump_stack_print_info.cold.2+0x48/0x48 [ 72.022844] should_fail.cold.4+0x5/0xd [ 72.026815] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 72.031973] ? __lock_acquire+0x7f5/0x5140 [ 72.036221] ? debug_check_no_locks_freed+0x310/0x310 [ 72.041409] ? kasan_unpoison_shadow+0x35/0x50 [ 72.046007] ? kasan_alloc_pages+0x38/0x40 [ 72.050244] ? get_page_from_freelist+0x10ff/0x4f00 [ 72.055259] ? check_noncircular+0x20/0x20 [ 72.059509] ? print_usage_bug+0xc0/0xc0 [ 72.064313] get_futex_key+0x2c3/0x1d10 [ 72.068286] ? __isolate_free_page+0x7c0/0x7c0 [ 72.072884] ? __lock_acquire+0x7f5/0x5140 [ 72.077241] ? futex_lock_pi_atomic+0x2a0/0x2a0 [ 72.081912] ? rb_erase_cached+0xc6a/0x32a0 [ 72.086241] ? rb_next+0x140/0x140 [ 72.089866] ? print_usage_bug+0xc0/0xc0 [ 72.093921] ? graph_lock+0x170/0x170 [ 72.097711] ? __lock_acquire+0x7f5/0x5140 [ 72.102030] ? __lock_is_held+0xb5/0x140 [ 72.106086] ? check_noncircular+0x20/0x20 [ 72.110313] ? rcu_read_lock_sched_held+0x108/0x120 [ 72.115344] ? update_cfs_rq_load_avg.part.67+0x241/0x2c0 [ 72.120986] ? tg_unthrottle_up+0x220/0x220 [ 72.125402] ? print_usage_bug+0xc0/0xc0 [ 72.129560] ? __update_load_avg_cfs_rq.isra.35+0x435/0x590 [ 72.135356] ? update_load_avg+0x1303/0x2570 [ 72.139751] ? print_usage_bug+0xc0/0xc0 [ 72.143813] ? print_usage_bug+0xc0/0xc0 [ 72.148380] ? __lock_acquire+0x7f5/0x5140 [ 72.152599] ? graph_lock+0x170/0x170 [ 72.156524] ? print_usage_bug+0xc0/0xc0 [ 72.160591] ? graph_lock+0x170/0x170 [ 72.164413] ? graph_lock+0x170/0x170 [ 72.168217] ? __lock_acquire+0x7f5/0x5140 [ 72.172442] ? debug_check_no_locks_freed+0x310/0x310 [ 72.177908] ? graph_lock+0x170/0x170 [ 72.181698] ? find_held_lock+0x36/0x1c0 [ 72.185746] ? print_usage_bug+0xc0/0xc0 [ 72.189793] ? __update_load_avg_blocked_se.isra.33+0x460/0x460 [ 72.195858] ? print_usage_bug+0xc0/0xc0 [ 72.199955] ? print_usage_bug+0xc0/0xc0 [ 72.204020] ? print_usage_bug+0xc0/0xc0 [ 72.208087] ? update_load_avg+0x2d9/0x2570 [ 72.213340] ? update_load_avg+0x2d9/0x2570 [ 72.217875] futex_wake+0x15c/0x890 [ 72.221491] ? get_futex_key+0x1d10/0x1d10 [ 72.225822] ? __lock_acquire+0x7f5/0x5140 [ 72.230051] ? __lock_acquire+0x7f5/0x5140 [ 72.234292] do_futex+0x890/0x2620 [ 72.237828] ? debug_check_no_locks_freed+0x310/0x310 [ 72.243026] ? __lock_acquire+0x7f5/0x5140 [ 72.247335] ? exit_robust_list+0x1b0/0x1b0 [ 72.251678] ? debug_check_no_locks_freed+0x310/0x310 [ 72.256858] ? graph_lock+0x170/0x170 [ 72.260641] ? debug_check_no_locks_freed+0x310/0x310 [ 72.265905] ? graph_lock+0x170/0x170 [ 72.269712] ? task_numa_work+0xef0/0xef0 [ 72.273846] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 72.279029] ? graph_lock+0x170/0x170 [ 72.282825] ? find_held_lock+0x36/0x1c0 [ 72.286871] ? graph_lock+0x170/0x170 [ 72.290670] ? find_held_lock+0x36/0x1c0 [ 72.294740] ? find_held_lock+0x36/0x1c0 [ 72.298808] ? find_held_lock+0x36/0x1c0 [ 72.302968] ? lock_downgrade+0x8e0/0x8e0 [ 72.307161] ? lock_release+0xa10/0xa10 [ 72.311156] ? check_same_owner+0x320/0x320 [ 72.315742] ? __might_sleep+0x95/0x190 [ 72.319864] ? native_load_gs_index+0x2d/0x30 [ 72.324363] ? __might_sleep+0x95/0x190 [ 72.328502] mm_release+0x3ec/0x540 [ 72.332176] ? mm_access+0x120/0x120 [ 72.335884] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 72.340887] ? trace_hardirqs_on+0xd/0x10 [ 72.345024] ? _raw_spin_unlock_irq+0x27/0x70 [ 72.349563] ? acct_collect+0x64f/0x7c0 [ 72.353523] ? trace_hardirqs_on+0xd/0x10 [ 72.357669] do_exit+0x4b5/0x22f0 [ 72.361113] ? lock_downgrade+0x8e0/0x8e0 [ 72.365241] ? finish_task_switch+0x182/0x810 [ 72.369724] ? mm_update_next_owner+0xbd0/0xbd0 [ 72.374377] ? print_usage_bug+0xc0/0xc0 [ 72.378433] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 72.381503] FAULT_INJECTION: forcing a failure. [ 72.381503] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 72.382925] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 72.382934] ? compat_start_thread+0x80/0x80 [ 72.382942] ? _raw_spin_unlock_irq+0x27/0x70 [ 72.382949] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 72.382954] ? trace_hardirqs_on+0xd/0x10 [ 72.382963] ? _raw_spin_unlock_irq+0x27/0x70 [ 72.423637] ? finish_task_switch+0x1ca/0x810 [ 72.428117] ? finish_task_switch+0x182/0x810 [ 72.432601] ? __lock_acquire+0x7f5/0x5140 [ 72.436843] ? lock_repin_lock+0x410/0x410 [ 72.441077] ? debug_check_no_locks_freed+0x310/0x310 [ 72.446362] ? pci_mmcfg_check_reserved+0x120/0x120 [ 72.451383] ? graph_lock+0x170/0x170 [ 72.455190] ? graph_lock+0x170/0x170 [ 72.458984] ? graph_lock+0x170/0x170 [ 72.462771] ? __mutex_lock+0x95d/0x17f0 [ 72.466819] ? graph_lock+0x170/0x170 [ 72.470621] ? find_held_lock+0x36/0x1c0 [ 72.474671] ? graph_lock+0x170/0x170 [ 72.478463] ? memset+0x31/0x40 [ 72.481991] ? find_held_lock+0x36/0x1c0 [ 72.486043] ? recalc_sigpending+0x6a/0x150 [ 72.490352] ? lock_downgrade+0x8e0/0x8e0 [ 72.494485] ? do_signal_stop+0x37a/0x8e0 [ 72.498623] do_group_exit+0x135/0x3b0 [ 72.502500] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 72.507176] ? __ia32_sys_exit+0x50/0x50 [ 72.511232] ? _raw_spin_unlock_irq+0x27/0x70 [ 72.515716] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 72.520721] get_signal+0x6a9/0x1480 [ 72.524426] ? ptrace_notify+0x110/0x110 [ 72.528471] ? kasan_check_write+0x14/0x20 [ 72.532691] ? ldsem_up_read+0x27/0x50 [ 72.536563] ? tty_ldisc_deref+0x30/0x40 [ 72.540611] ? kasan_check_read+0x11/0x20 [ 72.544742] ? rcu_is_watching+0x85/0x140 [ 72.548874] ? rcu_pm_notify+0xc0/0xc0 [ 72.552754] do_signal+0x98/0x2040 [ 72.556282] ? vfs_writev+0x1e9/0x320 [ 72.560070] ? setup_sigcontext+0x7d0/0x7d0 [ 72.564380] ? wait_for_completion+0x870/0x870 [ 72.568970] ? exit_to_usermode_loop+0x8a/0x2a0 [ 72.573976] exit_to_usermode_loop+0x1bf/0x2a0 [ 72.579412] ? vfs_writev+0x320/0x320 [ 72.583199] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 72.588033] do_syscall_64+0x573/0x6e0 [ 72.591910] ? syscall_return_slowpath+0x4c0/0x4c0 [ 72.596827] ? syscall_return_slowpath+0x20c/0x4c0 [ 72.601750] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 72.607535] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 72.613434] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 72.618609] RIP: 0033:0x455b59 [ 72.621784] RSP: 002b:00007f15bba38c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 72.629523] RAX: fffffffffffffe00 RBX: 00007f15bba396d4 RCX: 0000000000455b59 [ 72.636781] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 72.644123] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 72.651379] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 72.658651] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 72.665959] CPU: 1 PID: 5774 Comm: syz-executor1 Not tainted 4.17.0-rc3-syzkaller #0 [ 72.668733] FAULT_INJECTION: forcing a failure. [ 72.668733] name fail_futex, interval 1, probability 0, space 0, times 0 [ 72.673959] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 72.673963] Call Trace: [ 72.673976] dump_stack+0x162/0x21a [ 72.673983] ? dump_stack_print_info.cold.2+0x48/0x48 [ 72.673998] should_fail.cold.4+0x5/0xd [ 72.710217] ? graph_lock+0x170/0x170 [ 72.714032] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 72.719126] ? __lock_acquire+0x7f5/0x5140 [ 72.723345] ? lock_acquire+0x1dc/0x520 [ 72.727305] ? find_held_lock+0x36/0x1c0 [ 72.731366] ? lock_downgrade+0x8e0/0x8e0 [ 72.735502] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 72.740507] ? kasan_check_read+0x11/0x20 [ 72.744656] ? rcu_is_watching+0x85/0x140 [ 72.748797] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 72.753981] ? rcu_read_lock+0x70/0x70 [ 72.757874] __alloc_pages_nodemask+0x34e/0xd70 [ 72.762544] ? page_remove_rmap+0x4eb/0xe00 [ 72.766862] ? __alloc_pages_slowpath+0x2db0/0x2db0 [ 72.771865] ? lock_downgrade+0x8e0/0x8e0 [ 72.776016] ? __lock_acquire+0x7f5/0x5140 [ 72.780247] ? find_held_lock+0x36/0x1c0 [ 72.784296] ? lock_acquire+0x1dc/0x520 [ 72.788258] ? lock_release+0xa10/0xa10 [ 72.792216] ? graph_lock+0x170/0x170 [ 72.796007] alloc_pages_current+0xd6/0x1b0 [ 72.800336] __get_free_pages+0xf/0x40 [ 72.804234] __tlb_remove_page_size+0x26b/0x4d0 [ 72.808903] unmap_page_range+0xc2c/0x1ff0 [ 72.813133] ? __activate_page+0x13b0/0x13b0 [ 72.817541] ? vm_normal_page_pmd+0x330/0x330 [ 72.822026] ? kasan_check_read+0x11/0x20 [ 72.826166] ? kasan_check_read+0x11/0x20 [ 72.830316] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 72.835516] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 72.840701] ? is_bpf_text_address+0x81/0xe0 [ 72.845097] ? kernel_text_address+0x79/0xf0 [ 72.849497] ? unwind_get_return_address+0x61/0xa0 [ 72.854412] ? graph_lock+0x170/0x170 [ 72.858197] ? __save_stack_trace+0x7e/0xd0 [ 72.862510] ? find_held_lock+0x36/0x1c0 [ 72.866581] ? lock_downgrade+0x8e0/0x8e0 [ 72.870729] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 72.875217] ? uprobe_mmap+0xc10/0xc10 [ 72.879088] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 72.883658] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 72.888768] unmap_single_vma+0x121/0x300 [ 72.892908] unmap_vmas+0xe2/0x190 [ 72.896438] exit_mmap+0x209/0x430 [ 72.899965] ? __ia32_sys_munmap+0x70/0x70 [ 72.904195] ? __khugepaged_exit+0x3a8/0x630 [ 72.908696] ? __might_sleep+0x95/0x190 [ 72.912677] mmput+0x1f4/0x550 [ 72.915857] ? lock_downgrade+0x8e0/0x8e0 [ 72.919992] ? set_mm_exe_file+0x1f0/0x1f0 [ 72.924215] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 72.928697] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 72.933273] ? kasan_check_write+0x14/0x20 [ 72.937505] ? do_raw_spin_lock+0xc1/0x200 [ 72.941738] do_exit+0xd0f/0x22f0 [ 72.945184] ? mm_update_next_owner+0xbd0/0xbd0 [ 72.949835] ? print_usage_bug+0xc0/0xc0 [ 72.953881] ? free_unref_page+0x9d0/0x9d0 [ 72.958102] ? trace_hardirqs_on+0xd/0x10 [ 72.962243] ? kasan_check_write+0x14/0x20 [ 72.966463] ? finish_task_switch+0x59e/0x810 [ 72.970944] ? __lock_acquire+0x7f5/0x5140 [ 72.975170] ? lock_repin_lock+0x410/0x410 [ 72.979401] ? pci_mmcfg_check_reserved+0x120/0x120 [ 72.984417] ? graph_lock+0x170/0x170 [ 72.988218] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 72.992800] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 72.997885] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 73.002885] ? trace_hardirqs_on+0xd/0x10 [ 73.007024] ? find_held_lock+0x36/0x1c0 [ 73.011071] ? graph_lock+0x170/0x170 [ 73.014864] ? memset+0x31/0x40 [ 73.018131] ? find_held_lock+0x36/0x1c0 [ 73.022182] ? recalc_sigpending+0x6a/0x150 [ 73.026492] ? lock_downgrade+0x8e0/0x8e0 [ 73.030622] ? do_signal_stop+0x37a/0x8e0 [ 73.034759] do_group_exit+0x135/0x3b0 [ 73.038633] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 73.043197] ? __ia32_sys_exit+0x50/0x50 [ 73.047242] ? _raw_spin_unlock_irq+0x27/0x70 [ 73.051723] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 73.056725] get_signal+0x6a9/0x1480 [ 73.060445] ? ptrace_notify+0x110/0x110 [ 73.064509] ? kasan_check_write+0x14/0x20 [ 73.068731] ? ldsem_up_read+0x27/0x50 [ 73.072607] ? tty_ldisc_deref+0x30/0x40 [ 73.076656] ? kasan_check_read+0x11/0x20 [ 73.080790] ? rcu_is_watching+0x85/0x140 [ 73.084924] ? rcu_pm_notify+0xc0/0xc0 [ 73.088812] do_signal+0x98/0x2040 [ 73.092336] ? vfs_writev+0x1e9/0x320 [ 73.096124] ? setup_sigcontext+0x7d0/0x7d0 [ 73.100429] ? wait_for_completion+0x870/0x870 [ 73.105903] ? exit_to_usermode_loop+0x8a/0x2a0 [ 73.110559] exit_to_usermode_loop+0x1bf/0x2a0 [ 73.115216] ? vfs_writev+0x320/0x320 [ 73.119003] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 73.123856] do_syscall_64+0x573/0x6e0 [ 73.127744] ? syscall_return_slowpath+0x4c0/0x4c0 [ 73.132660] ? syscall_return_slowpath+0x20c/0x4c0 [ 73.137574] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 73.143028] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 73.148392] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 73.153567] RIP: 0033:0x455b59 [ 73.156747] RSP: 002b:00007f4f3cfeec68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 73.164443] RAX: fffffffffffffe00 RBX: 00007f4f3cfef6d4 RCX: 0000000000455b59 [ 73.171713] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 73.178965] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 73.186221] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 73.193477] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 73.200747] CPU: 0 PID: 5776 Comm: syz-executor Not tainted 4.17.0-rc3-syzkaller #0 [ 73.206187] FAULT_INJECTION: forcing a failure. [ 73.206187] name fail_futex, interval 1, probability 0, space 0, times 0 [ 73.208552] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.208556] Call Trace: [ 73.208569] dump_stack+0x162/0x21a [ 73.208577] ? dump_stack_print_info.cold.2+0x48/0x48 [ 73.208589] should_fail.cold.4+0x5/0xd [ 73.244774] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 73.249887] ? __lock_acquire+0x7f5/0x5140 [ 73.254110] ? print_usage_bug+0xc0/0xc0 [ 73.258153] ? debug_check_no_locks_freed+0x310/0x310 [ 73.263333] ? __lock_acquire+0x7f5/0x5140 [ 73.267552] ? kasan_unpoison_shadow+0x35/0x50 [ 73.272204] ? kasan_alloc_pages+0x38/0x40 [ 73.276423] ? get_page_from_freelist+0x10ff/0x4f00 [ 73.281445] ? check_noncircular+0x20/0x20 [ 73.285675] get_futex_key+0x2c3/0x1d10 [ 73.289634] ? __isolate_free_page+0x7c0/0x7c0 [ 73.294200] ? __lock_acquire+0x7f5/0x5140 [ 73.298421] ? __lock_acquire+0x7f5/0x5140 [ 73.302639] ? futex_lock_pi_atomic+0x2a0/0x2a0 [ 73.307296] ? rb_erase_cached+0xc6a/0x32a0 [ 73.311821] ? debug_check_no_locks_freed+0x310/0x310 [ 73.316996] ? graph_lock+0x170/0x170 [ 73.320790] ? print_usage_bug+0xc0/0xc0 [ 73.324835] ? lock_downgrade+0x8e0/0x8e0 [ 73.328968] ? graph_lock+0x170/0x170 [ 73.332755] ? find_held_lock+0x36/0x1c0 [ 73.336819] ? check_noncircular+0x20/0x20 [ 73.341047] ? graph_lock+0x170/0x170 [ 73.344838] ? lock_downgrade+0x8e0/0x8e0 [ 73.348976] ? find_held_lock+0x36/0x1c0 [ 73.353028] ? lock_downgrade+0x8e0/0x8e0 [ 73.357167] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 73.361659] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 73.366229] ? kasan_check_write+0x14/0x20 [ 73.370454] ? __free_pages_ok+0x1b70/0x2bd0 [ 73.374848] ? print_usage_bug+0xc0/0xc0 [ 73.378893] ? trace_hardirqs_on+0xd/0x10 [ 73.383027] ? print_usage_bug+0xc0/0xc0 [ 73.387095] ? print_usage_bug+0xc0/0xc0 [ 73.391158] ? print_usage_bug+0xc0/0xc0 [ 73.395346] ? update_load_avg+0x2d9/0x2570 [ 73.399753] futex_wake+0x15c/0x890 [ 73.403735] ? get_futex_key+0x1d10/0x1d10 [ 73.407976] ? __lock_acquire+0x7f5/0x5140 [ 73.412397] ? __lock_acquire+0x7f5/0x5140 [ 73.417155] do_futex+0x890/0x2620 [ 73.420718] ? debug_check_no_locks_freed+0x310/0x310 [ 73.425897] ? __lock_acquire+0x7f5/0x5140 [ 73.430118] ? exit_robust_list+0x1b0/0x1b0 [ 73.434426] ? debug_check_no_locks_freed+0x310/0x310 [ 73.439626] ? graph_lock+0x170/0x170 [ 73.443413] ? debug_check_no_locks_freed+0x310/0x310 [ 73.448589] ? graph_lock+0x170/0x170 [ 73.452375] ? __lock_acquire+0x7f5/0x5140 [ 73.456598] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 73.461774] ? graph_lock+0x170/0x170 [ 73.465562] ? find_held_lock+0x36/0x1c0 [ 73.469615] ? graph_lock+0x170/0x170 [ 73.473400] ? find_held_lock+0x36/0x1c0 [ 73.477444] ? find_held_lock+0x36/0x1c0 [ 73.481497] ? find_held_lock+0x36/0x1c0 [ 73.485574] ? lock_downgrade+0x8e0/0x8e0 [ 73.489709] ? lock_release+0xa10/0xa10 [ 73.493669] ? check_same_owner+0x320/0x320 [ 73.497972] ? __might_sleep+0x95/0x190 [ 73.501929] ? native_load_gs_index+0x2d/0x30 [ 73.506425] ? __might_sleep+0x95/0x190 [ 73.510390] mm_release+0x3ec/0x540 [ 73.514019] ? mm_access+0x120/0x120 [ 73.517735] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 73.522741] ? trace_hardirqs_on+0xd/0x10 [ 73.526885] ? _raw_spin_unlock_irq+0x27/0x70 [ 73.531379] ? acct_collect+0x64f/0x7c0 [ 73.535335] ? trace_hardirqs_on+0xd/0x10 [ 73.539471] do_exit+0x4b5/0x22f0 [ 73.542912] ? mm_update_next_owner+0xbd0/0xbd0 [ 73.547567] ? print_usage_bug+0xc0/0xc0 [ 73.551613] ? free_unref_page+0x9d0/0x9d0 [ 73.555834] ? trace_hardirqs_on+0xd/0x10 [ 73.559984] ? kasan_check_write+0x14/0x20 [ 73.564206] ? finish_task_switch+0x59e/0x810 [ 73.568703] ? __lock_acquire+0x7f5/0x5140 [ 73.572924] ? lock_repin_lock+0x410/0x410 [ 73.577238] ? debug_check_no_locks_freed+0x310/0x310 [ 73.582430] ? pci_mmcfg_check_reserved+0x120/0x120 [ 73.587449] ? graph_lock+0x170/0x170 [ 73.591236] ? set_next_entity+0x2ae/0xaf0 [ 73.595461] ? debug_check_no_locks_freed+0x310/0x310 [ 73.600648] ? __mutex_lock+0x95d/0x17f0 [ 73.604696] ? update_load_avg+0x2570/0x2570 [ 73.609101] ? __enqueue_entity+0x10d/0x1f0 [ 73.613412] ? find_held_lock+0x36/0x1c0 [ 73.617459] ? graph_lock+0x170/0x170 [ 73.621261] ? memset+0x31/0x40 [ 73.624526] ? find_held_lock+0x36/0x1c0 [ 73.628589] ? recalc_sigpending+0x6a/0x150 [ 73.632895] ? lock_downgrade+0x8e0/0x8e0 [ 73.637034] ? do_signal_stop+0x37a/0x8e0 [ 73.641173] do_group_exit+0x135/0x3b0 [ 73.645146] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 73.649717] ? __ia32_sys_exit+0x50/0x50 [ 73.653762] ? _raw_spin_unlock_irq+0x27/0x70 [ 73.658241] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 73.663250] get_signal+0x6a9/0x1480 [ 73.667477] ? ptrace_notify+0x110/0x110 [ 73.671528] ? __schedule+0x809/0x1e30 [ 73.675406] ? pci_mmcfg_check_reserved+0x120/0x120 [ 73.680430] do_signal+0x98/0x2040 [ 73.683969] ? vfs_writev+0x1e9/0x320 [ 73.688020] ? setup_sigcontext+0x7d0/0x7d0 [ 73.692327] ? wait_for_completion+0x870/0x870 [ 73.696899] ? schedule+0xef/0x430 [ 73.700424] ? __schedule+0x1e30/0x1e30 [ 73.704395] ? exit_to_usermode_loop+0x8a/0x2a0 [ 73.709053] exit_to_usermode_loop+0x1bf/0x2a0 [ 73.713631] ? vfs_writev+0x320/0x320 [ 73.717438] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 73.722272] do_syscall_64+0x573/0x6e0 [ 73.726147] ? syscall_return_slowpath+0x4c0/0x4c0 [ 73.731063] ? syscall_return_slowpath+0x20c/0x4c0 [ 73.735981] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 73.741330] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 73.746775] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 73.751951] RIP: 0033:0x455b59 [ 73.755136] RSP: 002b:00007f4020685c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 73.762852] RAX: fffffffffffffe00 RBX: 00007f40206866d4 RCX: 0000000000455b59 [ 73.770113] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 73.777380] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 73.784633] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 73.791887] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 73.799160] CPU: 1 PID: 5778 Comm: syz-executor5 Not tainted 4.17.0-rc3-syzkaller #0 [ 73.806476] FAULT_INJECTION: forcing a failure. [ 73.806476] name fail_futex, interval 1, probability 0, space 0, times 0 [ 73.807053] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 73.807056] Call Trace: [ 73.807069] dump_stack+0x162/0x21a [ 73.807078] ? dump_stack_print_info.cold.2+0x48/0x48 [ 73.839153] should_fail.cold.4+0x5/0xd [ 73.843114] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 73.848203] ? __lock_acquire+0x7f5/0x5140 [ 73.852441] ? print_usage_bug+0xc0/0xc0 [ 73.856487] ? rb_erase_cached+0xc6a/0x32a0 [ 73.860797] ? __lock_acquire+0x7f5/0x5140 [ 73.865030] ? rb_next+0x140/0x140 [ 73.868556] ? kasan_alloc_pages+0x38/0x40 [ 73.872773] ? get_page_from_freelist+0x10ff/0x4f00 [ 73.877886] ? check_noncircular+0x20/0x20 [ 73.882133] get_futex_key+0x2c3/0x1d10 [ 73.886102] ? __isolate_free_page+0x7c0/0x7c0 [ 73.890673] ? __lock_acquire+0x7f5/0x5140 [ 73.894892] ? __lock_acquire+0x7f5/0x5140 [ 73.899113] ? futex_lock_pi_atomic+0x2a0/0x2a0 [ 73.903767] ? rb_erase_cached+0xc6a/0x32a0 [ 73.908091] ? debug_check_no_locks_freed+0x310/0x310 [ 73.913265] ? graph_lock+0x170/0x170 [ 73.917056] ? print_usage_bug+0xc0/0xc0 [ 73.921102] ? lock_downgrade+0x8e0/0x8e0 [ 73.925254] ? graph_lock+0x170/0x170 [ 73.929043] ? find_held_lock+0x36/0x1c0 [ 73.933102] ? check_noncircular+0x20/0x20 [ 73.937331] ? graph_lock+0x170/0x170 [ 73.941571] ? lock_downgrade+0x8e0/0x8e0 [ 73.945711] ? find_held_lock+0x36/0x1c0 [ 73.949776] ? lock_downgrade+0x8e0/0x8e0 [ 73.953916] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 73.958400] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 73.963101] ? __free_pages_ok+0x1b70/0x2bd0 [ 73.967496] ? print_usage_bug+0xc0/0xc0 [ 73.971553] ? trace_hardirqs_on+0xd/0x10 [ 73.975686] ? print_usage_bug+0xc0/0xc0 [ 73.979733] ? print_usage_bug+0xc0/0xc0 [ 73.984911] ? print_usage_bug+0xc0/0xc0 [ 73.988965] ? update_load_avg+0x2d9/0x2570 [ 73.993294] futex_wake+0x15c/0x890 [ 73.996910] ? get_futex_key+0x1d10/0x1d10 [ 74.001131] ? __lock_acquire+0x7f5/0x5140 [ 74.005355] ? __lock_acquire+0x7f5/0x5140 [ 74.009798] do_futex+0x890/0x2620 [ 74.013331] ? debug_check_no_locks_freed+0x310/0x310 [ 74.018504] ? __lock_acquire+0x7f5/0x5140 [ 74.022734] ? exit_robust_list+0x1b0/0x1b0 [ 74.027042] ? debug_check_no_locks_freed+0x310/0x310 [ 74.032768] ? graph_lock+0x170/0x170 [ 74.036561] ? debug_check_no_locks_freed+0x310/0x310 [ 74.041743] ? graph_lock+0x170/0x170 [ 74.045528] ? __lock_acquire+0x7f5/0x5140 [ 74.049753] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 74.054929] ? graph_lock+0x170/0x170 [ 74.058714] ? find_held_lock+0x36/0x1c0 [ 74.062810] ? graph_lock+0x170/0x170 [ 74.066606] ? find_held_lock+0x36/0x1c0 [ 74.070672] ? find_held_lock+0x36/0x1c0 [ 74.074743] ? find_held_lock+0x36/0x1c0 [ 74.078802] ? lock_downgrade+0x8e0/0x8e0 [ 74.082938] ? lock_release+0xa10/0xa10 [ 74.087157] ? check_same_owner+0x320/0x320 [ 74.091461] ? __might_sleep+0x95/0x190 [ 74.095420] ? native_load_gs_index+0x2d/0x30 [ 74.099902] ? __might_sleep+0x95/0x190 [ 74.103878] mm_release+0x3ec/0x540 [ 74.107492] ? mm_access+0x120/0x120 [ 74.111193] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 74.116195] ? trace_hardirqs_on+0xd/0x10 [ 74.120330] ? _raw_spin_unlock_irq+0x27/0x70 [ 74.124814] ? acct_collect+0x64f/0x7c0 [ 74.128769] ? trace_hardirqs_on+0xd/0x10 [ 74.132918] do_exit+0x4b5/0x22f0 [ 74.136358] ? mm_update_next_owner+0xbd0/0xbd0 [ 74.141010] ? print_usage_bug+0xc0/0xc0 [ 74.145058] ? free_unref_page+0x9d0/0x9d0 [ 74.149277] ? trace_hardirqs_on+0xd/0x10 [ 74.153415] ? kasan_check_write+0x14/0x20 [ 74.157661] ? finish_task_switch+0x59e/0x810 [ 74.162151] ? __lock_acquire+0x7f5/0x5140 [ 74.166980] ? lock_repin_lock+0x410/0x410 [ 74.171219] ? debug_check_no_locks_freed+0x310/0x310 [ 74.176413] ? pci_mmcfg_check_reserved+0x120/0x120 [ 74.181416] ? graph_lock+0x170/0x170 [ 74.185213] ? graph_lock+0x170/0x170 [ 74.189020] ? graph_lock+0x170/0x170 [ 74.192838] ? __mutex_lock+0x95d/0x17f0 [ 74.196910] ? graph_lock+0x170/0x170 [ 74.200705] ? find_held_lock+0x36/0x1c0 [ 74.204763] ? graph_lock+0x170/0x170 [ 74.208556] ? memset+0x31/0x40 [ 74.211819] ? find_held_lock+0x36/0x1c0 [ 74.215871] ? recalc_sigpending+0x6a/0x150 [ 74.220207] ? lock_downgrade+0x8e0/0x8e0 [ 74.224350] ? do_signal_stop+0x37a/0x8e0 [ 74.228495] do_group_exit+0x135/0x3b0 [ 74.232397] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 74.236994] ? __ia32_sys_exit+0x50/0x50 [ 74.241048] ? _raw_spin_unlock_irq+0x27/0x70 [ 74.245534] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 74.250556] get_signal+0x6a9/0x1480 [ 74.254282] ? ptrace_notify+0x110/0x110 [ 74.258338] ? kasan_check_write+0x14/0x20 [ 74.262556] ? ldsem_up_read+0x27/0x50 [ 74.266429] ? tty_ldisc_deref+0x30/0x40 [ 74.270477] ? kasan_check_read+0x11/0x20 [ 74.274623] ? rcu_is_watching+0x85/0x140 [ 74.278756] ? rcu_pm_notify+0xc0/0xc0 [ 74.282635] do_signal+0x98/0x2040 [ 74.286161] ? vfs_writev+0x1e9/0x320 [ 74.289949] ? setup_sigcontext+0x7d0/0x7d0 [ 74.294286] ? wait_for_completion+0x870/0x870 [ 74.298989] ? exit_to_usermode_loop+0x8a/0x2a0 [ 74.303657] exit_to_usermode_loop+0x1bf/0x2a0 [ 74.308251] ? vfs_writev+0x320/0x320 [ 74.312150] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 74.316984] do_syscall_64+0x573/0x6e0 [ 74.320874] ? finish_task_switch+0x1ca/0x810 [ 74.325358] ? syscall_return_slowpath+0x4c0/0x4c0 [ 74.330283] ? syscall_return_slowpath+0x20c/0x4c0 [ 74.335202] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 74.340556] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 74.345409] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 74.350586] RIP: 0033:0x455b59 [ 74.353778] RSP: 002b:00007f7244173c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 74.361488] RAX: fffffffffffffe00 RBX: 00007f72441746d4 RCX: 0000000000455b59 [ 74.369266] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 74.377303] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 74.384562] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 74.391820] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 74.399088] CPU: 0 PID: 5780 Comm: syz-executor4 Not tainted 4.17.0-rc3-syzkaller #0 [ 74.406988] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 74.416349] Call Trace: [ 74.418947] dump_stack+0x162/0x21a [ 74.422590] ? dump_stack_print_info.cold.2+0x48/0x48 [ 74.427886] should_fail.cold.4+0x5/0xd [ 74.431872] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 74.437100] ? __lock_acquire+0x7f5/0x5140 [ 74.441346] ? print_usage_bug+0xc0/0xc0 [ 74.445419] ? rb_erase_cached+0xc6a/0x32a0 [ 74.455680] ? __lock_acquire+0x7f5/0x5140 [ 74.459914] ? rb_next+0x140/0x140 [ 74.463584] ? kasan_alloc_pages+0x38/0x40 [ 74.467828] ? get_page_from_freelist+0x10ff/0x4f00 [ 74.472868] ? check_noncircular+0x20/0x20 [ 74.477121] get_futex_key+0x2c3/0x1d10 [ 74.481627] ? __isolate_free_page+0x7c0/0x7c0 [ 74.486216] ? __lock_acquire+0x7f5/0x5140 [ 74.490451] ? __lock_acquire+0x7f5/0x5140 [ 74.495656] ? futex_lock_pi_atomic+0x2a0/0x2a0 [ 74.497202] FAULT_INJECTION: forcing a failure. [ 74.497202] name fail_futex, interval 1, probability 0, space 0, times 0 [ 74.500588] ? rb_erase_cached+0xc6a/0x32a0 [ 74.500600] ? debug_check_no_locks_freed+0x310/0x310 [ 74.500604] ? graph_lock+0x170/0x170 [ 74.500611] ? print_usage_bug+0xc0/0xc0 [ 74.500616] ? lock_downgrade+0x8e0/0x8e0 [ 74.500626] ? graph_lock+0x170/0x170 [ 74.537182] ? find_held_lock+0x36/0x1c0 [ 74.541258] ? check_noncircular+0x20/0x20 [ 74.545498] ? graph_lock+0x170/0x170 [ 74.549295] ? lock_downgrade+0x8e0/0x8e0 [ 74.553439] ? find_held_lock+0x36/0x1c0 [ 74.557489] ? lock_downgrade+0x8e0/0x8e0 [ 74.561646] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 74.566413] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 74.570990] ? kasan_check_write+0x14/0x20 [ 74.575210] ? __free_pages_ok+0x1b70/0x2bd0 [ 74.579617] ? print_usage_bug+0xc0/0xc0 [ 74.583663] ? trace_hardirqs_on+0xd/0x10 [ 74.587822] ? print_usage_bug+0xc0/0xc0 [ 74.592135] ? print_usage_bug+0xc0/0xc0 [ 74.596181] ? print_usage_bug+0xc0/0xc0 [ 74.600229] ? update_load_avg+0x2d9/0x2570 [ 74.604579] futex_wake+0x15c/0x890 [ 74.608201] ? get_futex_key+0x1d10/0x1d10 [ 74.613722] ? __lock_acquire+0x7f5/0x5140 [ 74.617945] ? __lock_acquire+0x7f5/0x5140 [ 74.622169] do_futex+0x890/0x2620 [ 74.625707] ? debug_check_no_locks_freed+0x310/0x310 [ 74.631401] ? __lock_acquire+0x7f5/0x5140 [ 74.635620] ? exit_robust_list+0x1b0/0x1b0 [ 74.639928] ? debug_check_no_locks_freed+0x310/0x310 [ 74.645105] ? graph_lock+0x170/0x170 [ 74.648889] ? debug_check_no_locks_freed+0x310/0x310 [ 74.654062] ? graph_lock+0x170/0x170 [ 74.657848] ? __lock_acquire+0x7f5/0x5140 [ 74.662079] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 74.667252] ? graph_lock+0x170/0x170 [ 74.671049] ? find_held_lock+0x36/0x1c0 [ 74.675095] ? graph_lock+0x170/0x170 [ 74.678882] ? find_held_lock+0x36/0x1c0 [ 74.682944] ? find_held_lock+0x36/0x1c0 [ 74.686993] ? find_held_lock+0x36/0x1c0 [ 74.691046] ? lock_downgrade+0x8e0/0x8e0 [ 74.695179] ? lock_release+0xa10/0xa10 [ 74.699138] ? check_same_owner+0x320/0x320 [ 74.703530] ? __might_sleep+0x95/0x190 [ 74.707488] ? native_load_gs_index+0x2d/0x30 [ 74.711971] ? __might_sleep+0x95/0x190 [ 74.716022] mm_release+0x3ec/0x540 [ 74.719636] ? mm_access+0x120/0x120 [ 74.723338] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 74.728340] ? trace_hardirqs_on+0xd/0x10 [ 74.732493] ? _raw_spin_unlock_irq+0x27/0x70 [ 74.736986] ? acct_collect+0x64f/0x7c0 [ 74.740945] ? trace_hardirqs_on+0xd/0x10 [ 74.745078] do_exit+0x4b5/0x22f0 [ 74.748519] ? mm_update_next_owner+0xbd0/0xbd0 [ 74.753170] ? print_usage_bug+0xc0/0xc0 [ 74.757216] ? free_unref_page+0x9d0/0x9d0 [ 74.761435] ? trace_hardirqs_on+0xd/0x10 [ 74.765572] ? kasan_check_write+0x14/0x20 [ 74.769878] ? finish_task_switch+0x59e/0x810 [ 74.774360] ? __lock_acquire+0x7f5/0x5140 [ 74.778581] ? lock_repin_lock+0x410/0x410 [ 74.782819] ? debug_check_no_locks_freed+0x310/0x310 [ 74.787998] ? pci_mmcfg_check_reserved+0x120/0x120 [ 74.792998] ? graph_lock+0x170/0x170 [ 74.796786] ? graph_lock+0x170/0x170 [ 74.800579] ? graph_lock+0x170/0x170 [ 74.804401] ? __mutex_lock+0x95d/0x17f0 [ 74.808446] ? graph_lock+0x170/0x170 [ 74.812240] ? find_held_lock+0x36/0x1c0 [ 74.816304] ? graph_lock+0x170/0x170 [ 74.820986] ? memset+0x31/0x40 [ 74.824773] ? find_held_lock+0x36/0x1c0 [ 74.828840] ? recalc_sigpending+0x6a/0x150 [ 74.833167] ? lock_downgrade+0x8e0/0x8e0 [ 74.837302] ? do_signal_stop+0x37a/0x8e0 [ 74.841712] do_group_exit+0x135/0x3b0 [ 74.845595] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 74.850179] ? __ia32_sys_exit+0x50/0x50 [ 74.854227] ? _raw_spin_unlock_irq+0x27/0x70 [ 74.858709] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 74.863716] get_signal+0x6a9/0x1480 [ 74.867419] ? ptrace_notify+0x110/0x110 [ 74.871467] ? kasan_check_write+0x14/0x20 [ 74.875685] ? ldsem_up_read+0x27/0x50 [ 74.879571] ? tty_ldisc_deref+0x30/0x40 [ 74.883644] ? kasan_check_read+0x11/0x20 [ 74.887812] ? rcu_is_watching+0x85/0x140 [ 74.891953] ? rcu_pm_notify+0xc0/0xc0 [ 74.895859] do_signal+0x98/0x2040 [ 74.899389] ? vfs_writev+0x1e9/0x320 [ 74.903179] ? setup_sigcontext+0x7d0/0x7d0 [ 74.907674] ? wait_for_completion+0x870/0x870 [ 74.912263] ? exit_to_usermode_loop+0x8a/0x2a0 [ 74.916949] exit_to_usermode_loop+0x1bf/0x2a0 [ 74.921529] ? vfs_writev+0x320/0x320 [ 74.925322] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 74.930157] do_syscall_64+0x573/0x6e0 [ 74.934033] ? finish_task_switch+0x1ca/0x810 [ 74.938513] ? syscall_return_slowpath+0x4c0/0x4c0 [ 74.943426] ? syscall_return_slowpath+0x20c/0x4c0 [ 74.948343] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 74.953693] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 74.958523] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 74.963698] RIP: 0033:0x455b59 [ 74.966878] RSP: 002b:00007f6347782c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 74.974582] RAX: fffffffffffffe00 RBX: 00007f63477836d4 RCX: 0000000000455b59 [ 74.981839] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 2019/11/25 02:23:26 executed programs: 15 [ 74.989094] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 74.996349] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 75.004042] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 75.011323] CPU: 1 PID: 5782 Comm: syz-executor3 Not tainted 4.17.0-rc3-syzkaller #0 [ 75.019224] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.028589] Call Trace: [ 75.031179] dump_stack+0x162/0x21a [ 75.034808] ? dump_stack_print_info.cold.2+0x48/0x48 [ 75.040014] ? rb_next+0x140/0x140 [ 75.043555] should_fail.cold.4+0x5/0xd [ 75.047522] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 75.052791] ? __lock_acquire+0x7f5/0x5140 [ 75.057024] ? debug_check_no_locks_freed+0x310/0x310 [ 75.062217] ? kasan_unpoison_shadow+0x35/0x50 [ 75.066793] ? kasan_alloc_pages+0x38/0x40 [ 75.071017] ? get_page_from_freelist+0x10ff/0x4f00 [ 75.077107] ? check_noncircular+0x20/0x20 [ 75.081362] get_futex_key+0x2c3/0x1d10 [ 75.085350] ? __isolate_free_page+0x7c0/0x7c0 [ 75.090463] ? __lock_acquire+0x7f5/0x5140 [ 75.094696] ? futex_lock_pi_atomic+0x2a0/0x2a0 [ 75.099358] ? print_usage_bug+0xc0/0xc0 [ 75.103417] ? print_usage_bug+0xc0/0xc0 [ 75.107471] ? print_usage_bug+0xc0/0xc0 [ 75.111532] ? print_usage_bug+0xc0/0xc0 [ 75.115611] ? lock_downgrade+0x8e0/0x8e0 [ 75.119757] ? __lock_acquire+0x7f5/0x5140 [ 75.123995] ? __lock_acquire+0x7f5/0x5140 [ 75.128247] ? graph_lock+0x170/0x170 [ 75.132054] ? __lock_acquire+0x7f5/0x5140 [ 75.136286] ? debug_check_no_locks_freed+0x310/0x310 [ 75.141480] ? check_noncircular+0x20/0x20 [ 75.145734] ? print_usage_bug+0xc0/0xc0 [ 75.149796] ? __update_load_avg_blocked_se.isra.33+0x460/0x460 [ 75.155872] ? update_load_avg+0x2d9/0x2570 [ 75.160188] ? print_usage_bug+0xc0/0xc0 [ 75.164249] ? print_usage_bug+0xc0/0xc0 [ 75.168308] ? attach_entity_load_avg+0x850/0x850 [ 75.173150] ? graph_lock+0x170/0x170 [ 75.176944] ? print_usage_bug+0xc0/0xc0 [ 75.181005] ? __lock_acquire+0x7f5/0x5140 [ 75.185242] ? graph_lock+0x170/0x170 [ 75.189036] ? find_held_lock+0x36/0x1c0 [ 75.193089] ? print_usage_bug+0xc0/0xc0 [ 75.197170] ? print_usage_bug+0xc0/0xc0 [ 75.201236] ? print_usage_bug+0xc0/0xc0 [ 75.205299] ? print_usage_bug+0xc0/0xc0 [ 75.209360] ? print_usage_bug+0xc0/0xc0 [ 75.213424] futex_wake+0x15c/0x890 [ 75.217050] ? get_futex_key+0x1d10/0x1d10 [ 75.221276] ? __lock_acquire+0x7f5/0x5140 [ 75.225515] ? __lock_acquire+0x7f5/0x5140 [ 75.229752] do_futex+0x890/0x2620 [ 75.233287] ? debug_check_no_locks_freed+0x310/0x310 [ 75.238473] ? __lock_acquire+0x7f5/0x5140 [ 75.243411] ? exit_robust_list+0x1b0/0x1b0 [ 75.247755] ? debug_check_no_locks_freed+0x310/0x310 [ 75.252954] ? graph_lock+0x170/0x170 [ 75.256752] ? debug_check_no_locks_freed+0x310/0x310 [ 75.261943] ? print_usage_bug+0xc0/0xc0 [ 75.266008] ? graph_lock+0x170/0x170 [ 75.269809] ? graph_lock+0x170/0x170 [ 75.273614] ? find_held_lock+0x36/0x1c0 [ 75.277683] ? graph_lock+0x170/0x170 [ 75.281489] ? find_held_lock+0x36/0x1c0 [ 75.285561] ? find_held_lock+0x36/0x1c0 [ 75.289642] ? find_held_lock+0x36/0x1c0 [ 75.293719] ? lock_downgrade+0x8e0/0x8e0 [ 75.297877] ? lock_release+0xa10/0xa10 [ 75.302643] ? check_same_owner+0x320/0x320 [ 75.306967] ? __might_sleep+0x95/0x190 [ 75.310937] ? native_load_gs_index+0x2d/0x30 [ 75.315431] ? __might_sleep+0x95/0x190 [ 75.319411] mm_release+0x3ec/0x540 [ 75.323031] ? mm_access+0x120/0x120 [ 75.326914] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 75.331952] ? trace_hardirqs_on+0xd/0x10 [ 75.336094] ? _raw_spin_unlock_irq+0x27/0x70 [ 75.340581] ? acct_collect+0x64f/0x7c0 [ 75.344543] ? trace_hardirqs_on+0xd/0x10 [ 75.348691] do_exit+0x4b5/0x22f0 [ 75.352144] ? find_held_lock+0x36/0x1c0 [ 75.356202] ? mm_update_next_owner+0xbd0/0xbd0 [ 75.360866] ? print_usage_bug+0xc0/0xc0 [ 75.364941] ? graph_lock+0x170/0x170 [ 75.368736] ? graph_lock+0x170/0x170 [ 75.372537] ? kasan_check_read+0x11/0x20 [ 75.376677] ? rcu_is_watching+0x85/0x140 [ 75.378200] FAULT_INJECTION: forcing a failure. [ 75.378200] name fail_futex, interval 1, probability 0, space 0, times 0 [ 75.380821] ? __lock_acquire+0x7f5/0x5140 [ 75.380839] ? debug_check_no_locks_freed+0x310/0x310 [ 75.380845] ? memset+0x31/0x40 [ 75.380851] ? debug_mutex_free_waiter+0xfe/0x1b0 [ 75.380856] ? debug_mutex_wake_waiter+0x620/0x620 [ 75.380862] ? kasan_check_write+0x14/0x20 [ 75.380867] ? do_raw_spin_lock+0xc1/0x200 [ 75.380879] ? __mutex_lock+0x787/0x17f0 [ 75.427078] ? tty_write_lock+0x2c/0x50 [ 75.431045] ? mutex_trylock+0x2a0/0x2a0 [ 75.435110] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 75.440292] ? graph_lock+0x170/0x170 [ 75.444165] ? lock_acquire+0x1dc/0x520 [ 75.448125] ? ldsem_down_read+0x32/0x40 [ 75.452177] ? memset+0x31/0x40 [ 75.455441] ? find_held_lock+0x36/0x1c0 [ 75.459577] ? recalc_sigpending+0x6a/0x150 [ 75.463972] ? lock_downgrade+0x8e0/0x8e0 [ 75.468108] do_group_exit+0x135/0x3b0 [ 75.471981] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 75.476548] ? __ia32_sys_exit+0x50/0x50 [ 75.480594] ? _raw_spin_unlock_irq+0x27/0x70 [ 75.485075] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 75.490080] get_signal+0x6a9/0x1480 [ 75.493788] ? ptrace_notify+0x110/0x110 [ 75.497837] ? kasan_check_write+0x14/0x20 [ 75.502318] ? ldsem_up_read+0x27/0x50 [ 75.506217] ? tty_ldisc_deref+0x30/0x40 [ 75.510263] ? kasan_check_read+0x11/0x20 [ 75.514410] ? rcu_is_watching+0x85/0x140 [ 75.518575] ? rw_verify_area+0xb8/0x2b0 [ 75.522641] ? rcu_pm_notify+0xc0/0xc0 [ 75.526531] do_signal+0x98/0x2040 [ 75.530940] ? vfs_writev+0x1e9/0x320 [ 75.534766] ? setup_sigcontext+0x7d0/0x7d0 [ 75.539120] ? wait_for_completion+0x870/0x870 [ 75.543712] ? exit_to_usermode_loop+0x8a/0x2a0 [ 75.548389] exit_to_usermode_loop+0x1bf/0x2a0 [ 75.553002] ? vfs_writev+0x320/0x320 [ 75.556807] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 75.561640] do_syscall_64+0x573/0x6e0 [ 75.565517] ? finish_task_switch+0x1ca/0x810 [ 75.570011] ? syscall_return_slowpath+0x4c0/0x4c0 [ 75.574927] ? syscall_return_slowpath+0x20c/0x4c0 [ 75.579844] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 75.585201] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 75.590031] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 75.595224] RIP: 0033:0x455b59 [ 75.598420] RSP: 002b:00007efee9daec68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 75.606132] RAX: fffffffffffffe00 RBX: 00007efee9daf6d4 RCX: 0000000000455b59 [ 75.613563] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 75.620820] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 75.628077] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 75.635331] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 75.642601] CPU: 0 PID: 5797 Comm: syz-executor5 Not tainted 4.17.0-rc3-syzkaller #0 [ 75.650500] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 75.659861] Call Trace: [ 75.662494] dump_stack+0x162/0x21a [ 75.666131] ? dump_stack_print_info.cold.2+0x48/0x48 [ 75.671332] should_fail.cold.4+0x5/0xd [ 75.675316] ? debug_check_no_locks_freed+0x310/0x310 [ 75.680600] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 75.685714] ? __lock_acquire+0x29b6/0x5140 [ 75.690042] ? debug_check_no_locks_freed+0x310/0x310 [ 75.695224] ? graph_lock+0x170/0x170 [ 75.699022] ? kasan_alloc_pages+0x38/0x40 [ 75.703256] ? get_page_from_freelist+0x10ff/0x4f00 [ 75.708285] ? graph_lock+0x170/0x170 [ 75.712082] ? find_held_lock+0x36/0x1c0 [ 75.716177] get_futex_key+0x2c3/0x1d10 [ 75.720155] ? graph_lock+0x170/0x170 [ 75.723954] ? futex_lock_pi_atomic+0x2a0/0x2a0 [ 75.728624] ? lock_downgrade+0x8e0/0x8e0 [ 75.732861] ? find_held_lock+0x36/0x1c0 [ 75.737092] ? print_usage_bug+0xc0/0xc0 [ 75.741155] ? lock_downgrade+0x8e0/0x8e0 [ 75.745304] ? mark_held_locks+0xc9/0x160 [ 75.749538] ? check_noncircular+0x20/0x20 [ 75.753768] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 75.758786] ? trace_hardirqs_on+0xd/0x10 [ 75.762953] ? free_unref_page_commit.isra.91+0x5f0/0x5f0 [ 75.768680] ? attach_entity_load_avg+0x850/0x850 [ 75.773521] ? attach_entity_load_avg+0x850/0x850 [ 75.778369] ? graph_lock+0x170/0x170 [ 75.782170] ? __lock_acquire+0x7f5/0x5140 [ 75.786420] ? print_usage_bug+0xc0/0xc0 [ 75.790477] ? print_usage_bug+0xc0/0xc0 [ 75.794539] ? print_usage_bug+0xc0/0xc0 [ 75.798600] ? print_usage_bug+0xc0/0xc0 [ 75.802684] futex_wake+0x15c/0x890 [ 75.806323] ? get_futex_key+0x1d10/0x1d10 [ 75.810692] ? __lock_acquire+0x7f5/0x5140 [ 75.814940] ? __lock_acquire+0x7f5/0x5140 [ 75.819192] do_futex+0x890/0x2620 [ 75.822820] ? debug_check_no_locks_freed+0x310/0x310 [ 75.828015] ? __lock_acquire+0x7f5/0x5140 [ 75.832259] ? exit_robust_list+0x1b0/0x1b0 [ 75.836601] ? debug_check_no_locks_freed+0x310/0x310 [ 75.841805] ? graph_lock+0x170/0x170 [ 75.845612] ? debug_check_no_locks_freed+0x310/0x310 [ 75.850809] ? print_usage_bug+0xc0/0xc0 [ 75.854868] ? graph_lock+0x170/0x170 [ 75.858672] ? graph_lock+0x170/0x170 [ 75.862489] ? find_held_lock+0x36/0x1c0 [ 75.866559] ? graph_lock+0x170/0x170 [ 75.870361] ? find_held_lock+0x36/0x1c0 [ 75.874427] ? find_held_lock+0x36/0x1c0 [ 75.878499] ? find_held_lock+0x36/0x1c0 [ 75.882572] ? lock_downgrade+0x8e0/0x8e0 [ 75.886725] ? lock_release+0xa10/0xa10 [ 75.890696] ? check_same_owner+0x320/0x320 [ 75.895099] ? __might_sleep+0x95/0x190 [ 75.899066] ? native_load_gs_index+0x2d/0x30 [ 75.903566] ? __might_sleep+0x95/0x190 [ 75.907540] mm_release+0x3ec/0x540 [ 75.911167] ? mm_access+0x120/0x120 [ 75.914881] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 75.919896] ? trace_hardirqs_on+0xd/0x10 [ 75.924041] ? _raw_spin_unlock_irq+0x27/0x70 [ 75.928533] ? acct_collect+0x64f/0x7c0 [ 75.932509] ? trace_hardirqs_on+0xd/0x10 [ 75.936671] do_exit+0x4b5/0x22f0 [ 75.940127] ? find_held_lock+0x36/0x1c0 [ 75.944190] ? mm_update_next_owner+0xbd0/0xbd0 [ 75.948862] ? print_usage_bug+0xc0/0xc0 [ 75.952919] ? graph_lock+0x170/0x170 [ 75.956716] ? graph_lock+0x170/0x170 [ 75.960608] ? kasan_check_read+0x11/0x20 [ 75.964931] ? rcu_is_watching+0x85/0x140 [ 75.969120] ? __lock_acquire+0x7f5/0x5140 [ 75.973388] ? debug_check_no_locks_freed+0x310/0x310 [ 75.980094] ? memset+0x31/0x40 [ 75.983463] ? debug_mutex_free_waiter+0xfe/0x1b0 [ 75.988308] ? debug_mutex_wake_waiter+0x620/0x620 [ 75.993234] ? kasan_check_write+0x14/0x20 [ 75.997588] ? do_raw_spin_lock+0xc1/0x200 [ 76.001848] ? __mutex_lock+0x787/0x17f0 [ 76.005911] ? tty_write_lock+0x2c/0x50 [ 76.009890] ? mutex_trylock+0x2a0/0x2a0 [ 76.013957] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 76.019147] ? graph_lock+0x170/0x170 [ 76.022947] ? lock_acquire+0x1dc/0x520 [ 76.026924] ? ldsem_down_read+0x32/0x40 [ 76.027376] FAULT_INJECTION: forcing a failure. [ 76.027376] name fail_futex, interval 1, probability 0, space 0, times 0 [ 76.031069] ? memset+0x31/0x40 [ 76.031079] ? find_held_lock+0x36/0x1c0 [ 76.031090] ? recalc_sigpending+0xad/0x150 [ 76.031098] ? lock_downgrade+0x8e0/0x8e0 [ 76.031110] do_group_exit+0x135/0x3b0 [ 76.031118] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 76.031123] ? __ia32_sys_exit+0x50/0x50 [ 76.031130] ? _raw_spin_unlock_irq+0x27/0x70 [ 76.031136] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 76.031144] get_signal+0x6a9/0x1480 [ 76.031156] ? ptrace_notify+0x110/0x110 [ 76.031161] ? kasan_check_write+0x14/0x20 [ 76.031166] ? ldsem_up_read+0x27/0x50 [ 76.031172] ? tty_ldisc_deref+0x30/0x40 [ 76.031180] ? kasan_check_read+0x11/0x20 [ 76.111876] ? rcu_is_watching+0x85/0x140 [ 76.116274] ? rw_verify_area+0xb8/0x2b0 [ 76.120322] ? rcu_pm_notify+0xc0/0xc0 [ 76.124208] do_signal+0x98/0x2040 [ 76.127749] ? vfs_writev+0x1e9/0x320 [ 76.131540] ? setup_sigcontext+0x7d0/0x7d0 [ 76.135881] ? wait_for_completion+0x870/0x870 [ 76.140467] ? exit_to_usermode_loop+0x8a/0x2a0 [ 76.145209] exit_to_usermode_loop+0x1bf/0x2a0 [ 76.149778] ? vfs_writev+0x320/0x320 [ 76.153569] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 76.158400] do_syscall_64+0x573/0x6e0 [ 76.162299] ? finish_task_switch+0x1ca/0x810 [ 76.166780] ? syscall_return_slowpath+0x4c0/0x4c0 [ 76.171820] ? syscall_return_slowpath+0x20c/0x4c0 [ 76.176761] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 76.182135] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 76.186978] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 76.192152] RIP: 0033:0x455b59 [ 76.195371] RSP: 002b:00007f7244173c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 76.203063] RAX: fffffffffffffe00 RBX: 00007f72441746d4 RCX: 0000000000455b59 [ 76.210320] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 76.217578] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 76.224835] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 76.232105] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 76.239384] CPU: 1 PID: 5808 Comm: syz-executor Not tainted 4.17.0-rc3-syzkaller #0 [ 76.247363] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.256725] Call Trace: [ 76.259322] dump_stack+0x162/0x21a [ 76.262958] ? dump_stack_print_info.cold.2+0x48/0x48 [ 76.268153] should_fail.cold.4+0x5/0xd [ 76.272126] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 76.277223] ? __lock_acquire+0x7f5/0x5140 [ 76.281458] ? print_usage_bug+0xc0/0xc0 [ 76.285513] ? rb_erase_cached+0xc6a/0x32a0 [ 76.289842] ? __lock_acquire+0x7f5/0x5140 [ 76.294126] ? rb_next+0x140/0x140 [ 76.298654] ? __lock_acquire+0x7f5/0x5140 [ 76.302897] ? check_noncircular+0x20/0x20 [ 76.307146] ? __lock_acquire+0x7f5/0x5140 [ 76.311400] get_futex_key+0x2c3/0x1d10 [ 76.315390] ? graph_lock+0x170/0x170 [ 76.319213] ? __lock_acquire+0x7f5/0x5140 [ 76.323457] ? __lock_acquire+0x7f5/0x5140 [ 76.327702] ? futex_lock_pi_atomic+0x2a0/0x2a0 [ 76.332506] ? rb_erase_cached+0xc6a/0x32a0 [ 76.336836] ? debug_check_no_locks_freed+0x310/0x310 [ 76.342020] ? graph_lock+0x170/0x170 [ 76.345959] ? print_usage_bug+0xc0/0xc0 [ 76.350023] ? lock_downgrade+0x8e0/0x8e0 [ 76.354171] ? graph_lock+0x170/0x170 [ 76.357979] ? find_held_lock+0x36/0x1c0 [ 76.362059] ? check_noncircular+0x20/0x20 [ 76.366299] ? graph_lock+0x170/0x170 [ 76.370102] ? lock_downgrade+0x8e0/0x8e0 [ 76.374271] ? find_held_lock+0x36/0x1c0 [ 76.378340] ? lock_downgrade+0x8e0/0x8e0 [ 76.382489] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 76.387080] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 76.391668] ? kasan_check_write+0x14/0x20 [ 76.395907] ? __free_pages_ok+0x1b70/0x2bd0 [ 76.400411] ? print_usage_bug+0xc0/0xc0 [ 76.404499] ? trace_hardirqs_on+0xd/0x10 [ 76.408647] ? print_usage_bug+0xc0/0xc0 [ 76.412992] ? print_usage_bug+0xc0/0xc0 [ 76.417071] ? print_usage_bug+0xc0/0xc0 [ 76.421242] ? update_load_avg+0x2d9/0x2570 [ 76.425622] futex_wake+0x15c/0x890 [ 76.429255] ? get_futex_key+0x1d10/0x1d10 [ 76.433917] ? __lock_acquire+0x7f5/0x5140 [ 76.438194] ? __lock_acquire+0x7f5/0x5140 [ 76.442442] do_futex+0x890/0x2620 [ 76.445992] ? debug_check_no_locks_freed+0x310/0x310 [ 76.451201] ? __lock_acquire+0x7f5/0x5140 [ 76.454334] FAULT_INJECTION: forcing a failure. [ 76.454334] name fail_futex, interval 1, probability 0, space 0, times 0 [ 76.455453] ? exit_robust_list+0x1b0/0x1b0 [ 76.455463] ? debug_check_no_locks_freed+0x310/0x310 [ 76.455469] ? graph_lock+0x170/0x170 [ 76.455474] ? debug_check_no_locks_freed+0x310/0x310 [ 76.455481] ? graph_lock+0x170/0x170 [ 76.455485] ? __lock_acquire+0x7f5/0x5140 [ 76.455493] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 76.455498] ? graph_lock+0x170/0x170 [ 76.455504] ? find_held_lock+0x36/0x1c0 [ 76.455510] ? graph_lock+0x170/0x170 [ 76.455514] ? find_held_lock+0x36/0x1c0 [ 76.455522] ? find_held_lock+0x36/0x1c0 [ 76.518992] ? find_held_lock+0x36/0x1c0 [ 76.523051] ? lock_downgrade+0x8e0/0x8e0 [ 76.527205] ? lock_release+0xa10/0xa10 [ 76.531194] ? check_same_owner+0x320/0x320 [ 76.535609] ? __might_sleep+0x95/0x190 [ 76.539580] ? native_load_gs_index+0x2d/0x30 [ 76.544185] ? __might_sleep+0x95/0x190 [ 76.548161] mm_release+0x3ec/0x540 [ 76.551803] ? mm_access+0x120/0x120 [ 76.555591] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 76.560612] ? trace_hardirqs_on+0xd/0x10 [ 76.564776] ? _raw_spin_unlock_irq+0x27/0x70 [ 76.569277] ? acct_collect+0x64f/0x7c0 [ 76.573240] ? trace_hardirqs_on+0xd/0x10 [ 76.577389] do_exit+0x4b5/0x22f0 [ 76.580829] ? mm_update_next_owner+0xbd0/0xbd0 [ 76.585483] ? print_usage_bug+0xc0/0xc0 [ 76.589529] ? free_unref_page+0x9d0/0x9d0 [ 76.593746] ? trace_hardirqs_on+0xd/0x10 [ 76.597882] ? kasan_check_write+0x14/0x20 [ 76.602097] ? finish_task_switch+0x59e/0x810 [ 76.606584] ? __lock_acquire+0x7f5/0x5140 [ 76.610817] ? lock_repin_lock+0x410/0x410 [ 76.615948] ? debug_check_no_locks_freed+0x310/0x310 [ 76.621131] ? pci_mmcfg_check_reserved+0x120/0x120 [ 76.626153] ? graph_lock+0x170/0x170 [ 76.629947] ? graph_lock+0x170/0x170 [ 76.633999] ? graph_lock+0x170/0x170 [ 76.637793] ? __mutex_lock+0x95d/0x17f0 [ 76.641839] ? graph_lock+0x170/0x170 [ 76.645628] ? find_held_lock+0x36/0x1c0 [ 76.649934] ? graph_lock+0x170/0x170 [ 76.653736] ? memset+0x31/0x40 [ 76.657025] ? find_held_lock+0x36/0x1c0 [ 76.661085] ? recalc_sigpending+0x6a/0x150 [ 76.665391] ? lock_downgrade+0x8e0/0x8e0 [ 76.669521] ? do_signal_stop+0x37a/0x8e0 [ 76.673658] do_group_exit+0x135/0x3b0 [ 76.677531] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 76.682099] ? __ia32_sys_exit+0x50/0x50 [ 76.686142] ? _raw_spin_unlock_irq+0x27/0x70 [ 76.690636] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 76.695638] get_signal+0x6a9/0x1480 [ 76.699337] ? ptrace_notify+0x110/0x110 [ 76.703379] ? kasan_check_write+0x14/0x20 [ 76.707598] ? ldsem_up_read+0x27/0x50 [ 76.711469] ? tty_ldisc_deref+0x30/0x40 [ 76.715515] ? kasan_check_read+0x11/0x20 [ 76.719669] ? rcu_is_watching+0x85/0x140 [ 76.723812] ? rcu_pm_notify+0xc0/0xc0 [ 76.727693] do_signal+0x98/0x2040 [ 76.731438] ? vfs_writev+0x1e9/0x320 [ 76.735223] ? setup_sigcontext+0x7d0/0x7d0 [ 76.739535] ? wait_for_completion+0x870/0x870 [ 76.744123] ? exit_to_usermode_loop+0x8a/0x2a0 [ 76.748782] exit_to_usermode_loop+0x1bf/0x2a0 [ 76.753348] ? vfs_writev+0x320/0x320 [ 76.757132] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 76.761974] do_syscall_64+0x573/0x6e0 [ 76.765843] ? finish_task_switch+0x1ca/0x810 [ 76.770320] ? syscall_return_slowpath+0x4c0/0x4c0 [ 76.775246] ? syscall_return_slowpath+0x20c/0x4c0 [ 76.780180] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 76.785543] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 76.790371] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 76.795552] RIP: 0033:0x455b59 [ 76.798724] RSP: 002b:00007f4020685c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 76.806427] RAX: fffffffffffffe00 RBX: 00007f40206866d4 RCX: 0000000000455b59 [ 76.813697] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 76.820951] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 76.828201] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 76.835892] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 76.843161] CPU: 0 PID: 5810 Comm: syz-executor4 Not tainted 4.17.0-rc3-syzkaller #0 [ 76.851061] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 76.860415] Call Trace: [ 76.863006] dump_stack+0x162/0x21a [ 76.866639] ? dump_stack_print_info.cold.2+0x48/0x48 [ 76.871824] should_fail.cold.4+0x5/0xd [ 76.875790] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 76.880896] ? print_usage_bug+0xc0/0xc0 [ 76.884960] ? rb_erase_cached+0xc6a/0x32a0 [ 76.889282] ? __lock_acquire+0x7f5/0x5140 [ 76.893514] ? rb_next+0x140/0x140 [ 76.897050] ? __lock_acquire+0x7f5/0x5140 [ 76.901291] ? check_noncircular+0x20/0x20 [ 76.905522] ? __lock_acquire+0x7f5/0x5140 [ 76.909758] get_futex_key+0x2c3/0x1d10 [ 76.913727] ? graph_lock+0x170/0x170 [ 76.917528] ? __lock_acquire+0x7f5/0x5140 [ 76.921755] ? __lock_acquire+0x7f5/0x5140 [ 76.925995] ? futex_lock_pi_atomic+0x2a0/0x2a0 [ 76.930691] ? rb_erase_cached+0xc6a/0x32a0 [ 76.935022] ? debug_check_no_locks_freed+0x310/0x310 [ 76.940210] ? graph_lock+0x170/0x170 [ 76.944007] ? print_usage_bug+0xc0/0xc0 [ 76.948068] ? graph_lock+0x170/0x170 [ 76.951865] ? graph_lock+0x170/0x170 [ 76.955652] ? find_held_lock+0x36/0x1c0 [ 76.959719] ? check_noncircular+0x20/0x20 [ 76.964047] ? graph_lock+0x170/0x170 [ 76.967931] ? lock_downgrade+0x8e0/0x8e0 [ 76.972082] ? find_held_lock+0x36/0x1c0 [ 76.976145] ? lock_downgrade+0x8e0/0x8e0 [ 76.980294] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 76.984794] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 76.989380] ? kasan_check_write+0x14/0x20 [ 76.993634] ? __free_pages_ok+0x1b70/0x2bd0 [ 76.998089] ? print_usage_bug+0xc0/0xc0 [ 77.002146] ? trace_hardirqs_on+0xd/0x10 [ 77.006299] ? print_usage_bug+0xc0/0xc0 [ 77.010462] ? print_usage_bug+0xc0/0xc0 [ 77.014521] ? print_usage_bug+0xc0/0xc0 [ 77.018579] ? update_load_avg+0x2d9/0x2570 [ 77.022914] futex_wake+0x15c/0x890 [ 77.026543] ? get_futex_key+0x1d10/0x1d10 [ 77.030771] ? __lock_acquire+0x7f5/0x5140 [ 77.035006] ? __lock_acquire+0x7f5/0x5140 [ 77.039243] do_futex+0x890/0x2620 [ 77.042782] ? debug_check_no_locks_freed+0x310/0x310 [ 77.047968] ? __lock_acquire+0x7f5/0x5140 [ 77.052211] ? exit_robust_list+0x1b0/0x1b0 [ 77.056533] ? debug_check_no_locks_freed+0x310/0x310 [ 77.061825] ? graph_lock+0x170/0x170 [ 77.065620] ? debug_check_no_locks_freed+0x310/0x310 [ 77.071500] ? graph_lock+0x170/0x170 [ 77.075318] ? __lock_acquire+0x7f5/0x5140 [ 77.079559] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 77.084760] ? graph_lock+0x170/0x170 [ 77.088564] ? find_held_lock+0x36/0x1c0 [ 77.092626] ? graph_lock+0x170/0x170 [ 77.096425] ? find_held_lock+0x36/0x1c0 [ 77.100480] ? find_held_lock+0x36/0x1c0 [ 77.104540] ? find_held_lock+0x36/0x1c0 [ 77.108601] ? lock_downgrade+0x8e0/0x8e0 [ 77.112746] ? lock_release+0xa10/0xa10 [ 77.116710] ? check_same_owner+0x320/0x320 [ 77.121109] ? __might_sleep+0x95/0x190 [ 77.125080] ? native_load_gs_index+0x2d/0x30 [ 77.129576] ? __might_sleep+0x95/0x190 [ 77.133552] mm_release+0x3ec/0x540 [ 77.137168] ? mm_access+0x120/0x120 [ 77.140875] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 77.145890] ? trace_hardirqs_on+0xd/0x10 [ 77.150125] ? _raw_spin_unlock_irq+0x27/0x70 [ 77.154618] ? acct_collect+0x64f/0x7c0 [ 77.158595] ? trace_hardirqs_on+0xd/0x10 [ 77.162779] do_exit+0x4b5/0x22f0 [ 77.166230] ? mm_update_next_owner+0xbd0/0xbd0 [ 77.170984] ? print_usage_bug+0xc0/0xc0 [ 77.175040] ? free_unref_page+0x9d0/0x9d0 [ 77.179294] ? trace_hardirqs_on+0xd/0x10 [ 77.183444] ? kasan_check_write+0x14/0x20 [ 77.188379] ? finish_task_switch+0x59e/0x810 [ 77.192884] ? __lock_acquire+0x7f5/0x5140 [ 77.197115] ? lock_repin_lock+0x410/0x410 [ 77.201354] ? debug_check_no_locks_freed+0x310/0x310 [ 77.206548] ? pci_mmcfg_check_reserved+0x120/0x120 [ 77.211745] ? graph_lock+0x170/0x170 [ 77.215532] ? graph_lock+0x170/0x170 [ 77.219323] ? graph_lock+0x170/0x170 [ 77.223120] ? __mutex_lock+0x95d/0x17f0 [ 77.227186] ? graph_lock+0x170/0x170 [ 77.230990] ? find_held_lock+0x36/0x1c0 [ 77.235056] ? graph_lock+0x170/0x170 [ 77.238854] ? memset+0x31/0x40 [ 77.242122] ? find_held_lock+0x36/0x1c0 [ 77.246178] ? recalc_sigpending+0x6a/0x150 [ 77.250496] ? lock_downgrade+0x8e0/0x8e0 [ 77.254637] ? do_signal_stop+0x37a/0x8e0 [ 77.258770] do_group_exit+0x135/0x3b0 [ 77.262649] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 77.267220] ? __ia32_sys_exit+0x50/0x50 [ 77.271269] ? _raw_spin_unlock_irq+0x27/0x70 [ 77.275772] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 77.280799] get_signal+0x6a9/0x1480 [ 77.284532] ? ptrace_notify+0x110/0x110 [ 77.288603] ? kasan_check_write+0x14/0x20 [ 77.292839] ? ldsem_up_read+0x27/0x50 [ 77.298068] ? tty_ldisc_deref+0x30/0x40 [ 77.302137] ? kasan_check_read+0x11/0x20 [ 77.306383] ? rcu_is_watching+0x85/0x140 [ 77.310549] ? rcu_pm_notify+0xc0/0xc0 [ 77.314460] do_signal+0x98/0x2040 [ 77.317993] ? vfs_writev+0x1e9/0x320 [ 77.321783] ? setup_sigcontext+0x7d0/0x7d0 [ 77.326097] ? wait_for_completion+0x870/0x870 [ 77.330779] ? exit_to_usermode_loop+0x8a/0x2a0 [ 77.335437] exit_to_usermode_loop+0x1bf/0x2a0 [ 77.340005] ? vfs_writev+0x320/0x320 [ 77.343797] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 77.348630] do_syscall_64+0x573/0x6e0 [ 77.352523] ? finish_task_switch+0x1ca/0x810 [ 77.357026] ? syscall_return_slowpath+0x4c0/0x4c0 [ 77.361959] ? syscall_return_slowpath+0x20c/0x4c0 [ 77.366883] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 77.372305] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 77.377229] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 77.382426] RIP: 0033:0x455b59 [ 77.385613] RSP: 002b:00007f6347782c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 77.393336] RAX: fffffffffffffe00 RBX: 00007f63477836d4 RCX: 0000000000455b59 [ 77.400684] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 77.408084] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 77.415456] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 77.422712] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 77.695698] FAULT_INJECTION: forcing a failure. [ 77.695698] name fail_futex, interval 1, probability 0, space 0, times 0 [ 77.707859] CPU: 1 PID: 5830 Comm: syz-executor5 Not tainted 4.17.0-rc3-syzkaller #0 [ 77.716649] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 77.726003] Call Trace: [ 77.728644] dump_stack+0x162/0x21a [ 77.732281] ? dump_stack_print_info.cold.2+0x48/0x48 [ 77.737497] should_fail.cold.4+0x5/0xd [ 77.741483] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 77.746586] ? __lock_acquire+0x7f5/0x5140 [ 77.750899] ? print_usage_bug+0xc0/0xc0 [ 77.754953] ? rb_erase_cached+0xc6a/0x32a0 [ 77.759263] ? __lock_acquire+0x7f5/0x5140 [ 77.763602] ? rb_next+0x140/0x140 [ 77.767153] ? __lock_acquire+0x7f5/0x5140 [ 77.771507] ? check_noncircular+0x20/0x20 [ 77.775751] ? __lock_acquire+0x7f5/0x5140 [ 77.779977] get_futex_key+0x2c3/0x1d10 [ 77.784204] ? graph_lock+0x170/0x170 [ 77.788116] ? __lock_acquire+0x7f5/0x5140 [ 77.792483] ? __lock_acquire+0x7f5/0x5140 [ 77.796723] ? futex_lock_pi_atomic+0x2a0/0x2a0 [ 77.801520] ? rb_erase_cached+0xc6a/0x32a0 [ 77.805937] ? debug_check_no_locks_freed+0x310/0x310 [ 77.811127] ? graph_lock+0x170/0x170 [ 77.814920] ? print_usage_bug+0xc0/0xc0 [ 77.819151] ? lock_downgrade+0x8e0/0x8e0 [ 77.823305] ? graph_lock+0x170/0x170 [ 77.827102] ? find_held_lock+0x36/0x1c0 [ 77.831274] ? check_noncircular+0x20/0x20 [ 77.835556] ? graph_lock+0x170/0x170 [ 77.839352] ? lock_downgrade+0x8e0/0x8e0 [ 77.843553] ? find_held_lock+0x36/0x1c0 [ 77.847625] ? lock_downgrade+0x8e0/0x8e0 [ 77.851869] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 77.856428] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 77.861003] ? kasan_check_write+0x14/0x20 [ 77.865233] ? __free_pages_ok+0x1b70/0x2bd0 [ 77.869635] ? print_usage_bug+0xc0/0xc0 [ 77.873694] ? trace_hardirqs_on+0xd/0x10 [ 77.878096] ? print_usage_bug+0xc0/0xc0 [ 77.882157] ? print_usage_bug+0xc0/0xc0 [ 77.886223] ? print_usage_bug+0xc0/0xc0 [ 77.890281] ? update_load_avg+0x2d9/0x2570 [ 77.894703] futex_wake+0x15c/0x890 [ 77.898523] ? get_futex_key+0x1d10/0x1d10 [ 77.902752] ? __lock_acquire+0x7f5/0x5140 [ 77.906984] ? __lock_acquire+0x7f5/0x5140 [ 77.911227] do_futex+0x890/0x2620 [ 77.914892] ? debug_check_no_locks_freed+0x310/0x310 [ 77.920143] ? __lock_acquire+0x7f5/0x5140 [ 77.924402] ? exit_robust_list+0x1b0/0x1b0 [ 77.928736] ? debug_check_no_locks_freed+0x310/0x310 [ 77.933932] ? graph_lock+0x170/0x170 [ 77.937716] ? debug_check_no_locks_freed+0x310/0x310 [ 77.942891] ? graph_lock+0x170/0x170 [ 77.946792] ? __lock_acquire+0x7f5/0x5140 [ 77.951114] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 77.956310] ? graph_lock+0x170/0x170 [ 77.960207] ? find_held_lock+0x36/0x1c0 [ 77.964261] ? graph_lock+0x170/0x170 [ 77.968057] ? find_held_lock+0x36/0x1c0 [ 77.972132] ? find_held_lock+0x36/0x1c0 [ 77.976189] ? find_held_lock+0x36/0x1c0 [ 77.980240] ? lock_downgrade+0x8e0/0x8e0 [ 77.984552] ? lock_release+0xa10/0xa10 [ 77.988524] ? check_same_owner+0x320/0x320 [ 77.992842] ? __might_sleep+0x95/0x190 [ 77.996803] ? native_load_gs_index+0x2d/0x30 [ 78.001289] ? __might_sleep+0x95/0x190 [ 78.005267] mm_release+0x3ec/0x540 [ 78.008920] ? mm_access+0x120/0x120 [ 78.012630] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 78.018077] ? trace_hardirqs_on+0xd/0x10 [ 78.022237] ? _raw_spin_unlock_irq+0x27/0x70 [ 78.026796] ? acct_collect+0x64f/0x7c0 [ 78.030760] ? trace_hardirqs_on+0xd/0x10 [ 78.035033] do_exit+0x4b5/0x22f0 [ 78.038487] ? mm_update_next_owner+0xbd0/0xbd0 [ 78.043153] ? print_usage_bug+0xc0/0xc0 [ 78.047204] ? free_unref_page+0x9d0/0x9d0 [ 78.051430] ? trace_hardirqs_on+0xd/0x10 [ 78.055577] ? kasan_check_write+0x14/0x20 [ 78.059938] ? finish_task_switch+0x59e/0x810 [ 78.064442] ? __lock_acquire+0x7f5/0x5140 [ 78.068749] ? lock_repin_lock+0x410/0x410 [ 78.073649] ? debug_check_no_locks_freed+0x310/0x310 [ 78.078840] ? pci_mmcfg_check_reserved+0x120/0x120 [ 78.084031] ? graph_lock+0x170/0x170 [ 78.087824] ? graph_lock+0x170/0x170 [ 78.091689] ? graph_lock+0x170/0x170 [ 78.095533] ? __mutex_lock+0x95d/0x17f0 [ 78.099937] ? graph_lock+0x170/0x170 [ 78.103728] ? find_held_lock+0x36/0x1c0 [ 78.107782] ? graph_lock+0x170/0x170 [ 78.111595] ? memset+0x31/0x40 [ 78.114945] ? find_held_lock+0x36/0x1c0 [ 78.119002] ? recalc_sigpending+0x6a/0x150 [ 78.123315] ? lock_downgrade+0x8e0/0x8e0 [ 78.127455] ? do_signal_stop+0x37a/0x8e0 [ 78.131595] do_group_exit+0x135/0x3b0 [ 78.135474] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 78.140043] ? __ia32_sys_exit+0x50/0x50 [ 78.144087] ? _raw_spin_unlock_irq+0x27/0x70 [ 78.148576] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 78.153709] get_signal+0x6a9/0x1480 [ 78.157492] ? ptrace_notify+0x110/0x110 [ 78.161549] ? kasan_check_write+0x14/0x20 [ 78.165772] ? ldsem_up_read+0x27/0x50 [ 78.169733] ? tty_ldisc_deref+0x30/0x40 [ 78.173781] ? kasan_check_read+0x11/0x20 [ 78.177912] ? rcu_is_watching+0x85/0x140 [ 78.182047] ? rcu_pm_notify+0xc0/0xc0 [ 78.185935] do_signal+0x98/0x2040 [ 78.189468] ? vfs_writev+0x1e9/0x320 [ 78.193256] ? setup_sigcontext+0x7d0/0x7d0 [ 78.197571] ? wait_for_completion+0x870/0x870 [ 78.202333] ? exit_to_usermode_loop+0x8a/0x2a0 [ 78.207548] exit_to_usermode_loop+0x1bf/0x2a0 [ 78.212135] ? vfs_writev+0x320/0x320 [ 78.215931] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 78.220784] do_syscall_64+0x573/0x6e0 [ 78.224679] ? syscall_return_slowpath+0x4c0/0x4c0 [ 78.229610] ? syscall_return_slowpath+0x20c/0x4c0 [ 78.234540] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 78.239903] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 78.242960] FAULT_INJECTION: forcing a failure. [ 78.242960] name fail_futex, interval 1, probability 0, space 0, times 0 [ 78.244746] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 78.244752] RIP: 0033:0x455b59 [ 78.244755] RSP: 002b:00007f7244173c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 78.244762] RAX: fffffffffffffe00 RBX: 00007f72441746d4 RCX: 0000000000455b59 [ 78.244766] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 78.244768] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 78.244772] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 78.244775] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 78.250133] FAULT_INJECTION: forcing a failure. [ 78.250133] name failslab, interval 1, probability 0, space 0, times 0 [ 78.256221] CPU: 0 PID: 5835 Comm: syz-executor Not tainted 4.17.0-rc3-syzkaller #0 [ 78.328271] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.337618] Call Trace: [ 78.340199] dump_stack+0x162/0x21a [ 78.343824] ? dump_stack_print_info.cold.2+0x48/0x48 [ 78.349523] should_fail.cold.4+0x5/0xd [ 78.353495] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 78.358584] ? __lock_acquire+0x7f5/0x5140 [ 78.362814] ? print_usage_bug+0xc0/0xc0 [ 78.366864] ? rb_erase_cached+0xc6a/0x32a0 [ 78.371169] ? __lock_acquire+0x7f5/0x5140 [ 78.375386] ? rb_next+0x140/0x140 [ 78.378915] ? kasan_alloc_pages+0x38/0x40 [ 78.383231] ? get_page_from_freelist+0x10ff/0x4f00 [ 78.388240] ? check_noncircular+0x20/0x20 [ 78.392474] get_futex_key+0x2c3/0x1d10 [ 78.396434] ? __isolate_free_page+0x7c0/0x7c0 [ 78.401014] ? __lock_acquire+0x7f5/0x5140 [ 78.405236] ? __lock_acquire+0x7f5/0x5140 [ 78.409460] ? futex_lock_pi_atomic+0x2a0/0x2a0 [ 78.414288] ? rb_erase_cached+0xc6a/0x32a0 [ 78.418597] ? debug_check_no_locks_freed+0x310/0x310 [ 78.423782] ? graph_lock+0x170/0x170 [ 78.427565] ? print_usage_bug+0xc0/0xc0 [ 78.431648] ? lock_downgrade+0x8e0/0x8e0 [ 78.435794] ? graph_lock+0x170/0x170 [ 78.439583] ? find_held_lock+0x36/0x1c0 [ 78.443641] ? check_noncircular+0x20/0x20 [ 78.447882] ? graph_lock+0x170/0x170 [ 78.451671] ? lock_downgrade+0x8e0/0x8e0 [ 78.455819] ? find_held_lock+0x36/0x1c0 [ 78.459876] ? lock_downgrade+0x8e0/0x8e0 [ 78.464016] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 78.468499] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 78.473414] ? kasan_check_write+0x14/0x20 [ 78.477633] ? __free_pages_ok+0x1b70/0x2bd0 [ 78.482035] ? print_usage_bug+0xc0/0xc0 [ 78.486080] ? trace_hardirqs_on+0xd/0x10 [ 78.490314] ? print_usage_bug+0xc0/0xc0 [ 78.494369] ? print_usage_bug+0xc0/0xc0 [ 78.498502] ? print_usage_bug+0xc0/0xc0 [ 78.502546] ? update_load_avg+0x2d9/0x2570 [ 78.506876] futex_wake+0x15c/0x890 [ 78.510583] ? get_futex_key+0x1d10/0x1d10 [ 78.514803] ? __lock_acquire+0x7f5/0x5140 [ 78.519025] ? __lock_acquire+0x7f5/0x5140 [ 78.523255] do_futex+0x890/0x2620 [ 78.526781] ? debug_check_no_locks_freed+0x310/0x310 [ 78.531959] ? __lock_acquire+0x7f5/0x5140 [ 78.536180] ? exit_robust_list+0x1b0/0x1b0 [ 78.540488] ? debug_check_no_locks_freed+0x310/0x310 [ 78.545681] ? graph_lock+0x170/0x170 [ 78.549462] ? debug_check_no_locks_freed+0x310/0x310 [ 78.554633] ? graph_lock+0x170/0x170 [ 78.558421] ? __lock_acquire+0x7f5/0x5140 [ 78.562641] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 78.567813] ? graph_lock+0x170/0x170 [ 78.571600] ? find_held_lock+0x36/0x1c0 [ 78.575732] ? graph_lock+0x170/0x170 [ 78.579519] ? find_held_lock+0x36/0x1c0 [ 78.583575] ? find_held_lock+0x36/0x1c0 [ 78.587621] ? find_held_lock+0x36/0x1c0 [ 78.591692] ? lock_downgrade+0x8e0/0x8e0 [ 78.595822] ? lock_release+0xa10/0xa10 [ 78.599780] ? check_same_owner+0x320/0x320 [ 78.604084] ? __might_sleep+0x95/0x190 [ 78.608046] ? native_load_gs_index+0x2d/0x30 [ 78.612529] ? __might_sleep+0x95/0x190 [ 78.616492] mm_release+0x3ec/0x540 [ 78.620106] ? mm_access+0x120/0x120 [ 78.623815] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 78.628828] ? trace_hardirqs_on+0xd/0x10 [ 78.632962] ? _raw_spin_unlock_irq+0x27/0x70 [ 78.637455] ? acct_collect+0x64f/0x7c0 [ 78.641417] ? trace_hardirqs_on+0xd/0x10 [ 78.645728] do_exit+0x4b5/0x22f0 [ 78.649172] ? mm_update_next_owner+0xbd0/0xbd0 [ 78.653837] ? print_usage_bug+0xc0/0xc0 [ 78.657885] ? free_unref_page+0x9d0/0x9d0 [ 78.662120] ? trace_hardirqs_on+0xd/0x10 [ 78.666256] ? kasan_check_write+0x14/0x20 [ 78.670476] ? finish_task_switch+0x59e/0x810 [ 78.674958] ? __lock_acquire+0x7f5/0x5140 [ 78.679176] ? lock_repin_lock+0x410/0x410 [ 78.683751] ? debug_check_no_locks_freed+0x310/0x310 [ 78.689808] ? pci_mmcfg_check_reserved+0x120/0x120 [ 78.694842] ? graph_lock+0x170/0x170 [ 78.698637] ? graph_lock+0x170/0x170 [ 78.702448] ? graph_lock+0x170/0x170 [ 78.706250] ? print_usage_bug+0xc0/0xc0 [ 78.710313] ? graph_lock+0x170/0x170 [ 78.714245] ? find_held_lock+0x36/0x1c0 [ 78.718320] ? graph_lock+0x170/0x170 [ 78.722124] ? memset+0x31/0x40 [ 78.725389] ? find_held_lock+0x36/0x1c0 [ 78.729544] ? recalc_sigpending+0x6a/0x150 [ 78.733859] ? lock_downgrade+0x8e0/0x8e0 [ 78.738123] ? do_signal_stop+0x37a/0x8e0 [ 78.742284] do_group_exit+0x135/0x3b0 [ 78.746176] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 78.750740] ? __ia32_sys_exit+0x50/0x50 [ 78.754792] ? _raw_spin_unlock_irq+0x27/0x70 [ 78.759283] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 78.764303] get_signal+0x6a9/0x1480 [ 78.768130] ? ptrace_notify+0x110/0x110 [ 78.772188] ? kasan_check_write+0x14/0x20 [ 78.776415] ? ldsem_up_read+0x27/0x50 [ 78.780306] ? tty_ldisc_deref+0x30/0x40 [ 78.784364] ? kasan_check_read+0x11/0x20 [ 78.788528] ? rcu_is_watching+0x85/0x140 [ 78.792669] ? rcu_pm_notify+0xc0/0xc0 [ 78.796569] do_signal+0x98/0x2040 [ 78.800106] ? vfs_writev+0x1e9/0x320 [ 78.803903] ? setup_sigcontext+0x7d0/0x7d0 [ 78.808209] ? wait_for_completion+0x870/0x870 [ 78.812791] ? exit_to_usermode_loop+0x8a/0x2a0 [ 78.817814] exit_to_usermode_loop+0x1bf/0x2a0 [ 78.822378] ? vfs_writev+0x320/0x320 [ 78.826167] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 78.831010] do_syscall_64+0x573/0x6e0 [ 78.834894] ? finish_task_switch+0x1ca/0x810 [ 78.839372] ? syscall_return_slowpath+0x4c0/0x4c0 [ 78.844295] ? syscall_return_slowpath+0x20c/0x4c0 [ 78.849647] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 78.854997] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 78.859837] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 78.865366] RIP: 0033:0x455b59 [ 78.868564] RSP: 002b:00007f4020685c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 78.876276] RAX: fffffffffffffe00 RBX: 00007f40206866d4 RCX: 0000000000455b59 [ 78.883549] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 78.891644] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 78.898903] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 78.906157] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 78.913635] CPU: 1 PID: 5836 Comm: syz-executor1 Not tainted 4.17.0-rc3-syzkaller #0 [ 78.917755] FAULT_INJECTION: forcing a failure. [ 78.917755] name fail_futex, interval 1, probability 0, space 0, times 0 [ 78.921532] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 78.921536] Call Trace: [ 78.921549] dump_stack+0x162/0x21a [ 78.921557] ? dump_stack_print_info.cold.2+0x48/0x48 [ 78.921569] should_fail.cold.4+0x5/0xd [ 78.921577] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 78.962702] ? graph_lock+0x170/0x170 [ 78.966498] ? debug_check_no_locks_freed+0x310/0x310 [ 78.971770] ? debug_check_no_locks_freed+0x310/0x310 [ 78.976963] ? task_numa_work+0xef0/0xef0 [ 78.981109] ? find_held_lock+0x36/0x1c0 [ 78.985170] ? check_same_owner+0x320/0x320 [ 78.989476] ? rcu_note_context_switch+0x710/0x710 [ 78.994500] __should_failslab+0xba/0xf0 [ 78.998558] should_failslab+0x9/0x14 [ 79.002690] kmem_cache_alloc+0x2af/0x760 [ 79.006820] ? find_held_lock+0x36/0x1c0 [ 79.010876] taskstats_exit+0x6fd/0x1040 [ 79.014923] ? taskstats_user_cmd+0x11d0/0x11d0 [ 79.019605] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 79.024083] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 79.028653] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 79.033743] ? trace_hardirqs_on+0xd/0x10 [ 79.037881] ? _raw_spin_unlock_irq+0x27/0x70 [ 79.042359] ? acct_collect+0x64f/0x7c0 [ 79.046325] ? trace_hardirqs_on+0xd/0x10 [ 79.050460] do_exit+0x47a/0x22f0 [ 79.054348] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 79.059097] ? mm_update_next_owner+0xbd0/0xbd0 [ 79.063749] ? print_usage_bug+0xc0/0xc0 [ 79.067800] ? _raw_spin_unlock_irq+0x56/0x70 [ 79.072303] ? finish_task_switch+0x1ca/0x810 [ 79.076780] ? finish_task_switch+0x182/0x810 [ 79.081290] ? __lock_acquire+0x7f5/0x5140 [ 79.085516] ? lock_repin_lock+0x410/0x410 [ 79.089753] ? debug_check_no_locks_freed+0x310/0x310 [ 79.094938] ? pci_mmcfg_check_reserved+0x120/0x120 [ 79.099937] ? graph_lock+0x170/0x170 [ 79.103730] ? graph_lock+0x170/0x170 [ 79.107687] ? graph_lock+0x170/0x170 [ 79.111496] ? __mutex_lock+0x95d/0x17f0 [ 79.115546] ? graph_lock+0x170/0x170 [ 79.119423] ? find_held_lock+0x36/0x1c0 [ 79.123467] ? graph_lock+0x170/0x170 [ 79.127257] ? memset+0x31/0x40 [ 79.130519] ? find_held_lock+0x36/0x1c0 [ 79.134574] ? recalc_sigpending+0x6a/0x150 [ 79.138879] ? lock_downgrade+0x8e0/0x8e0 [ 79.143107] ? do_signal_stop+0x37a/0x8e0 [ 79.147242] do_group_exit+0x135/0x3b0 [ 79.151120] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 79.155685] ? __ia32_sys_exit+0x50/0x50 [ 79.159729] ? _raw_spin_unlock_irq+0x27/0x70 [ 79.164217] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 79.169228] get_signal+0x6a9/0x1480 [ 79.172934] ? ptrace_notify+0x110/0x110 [ 79.177860] ? kasan_check_write+0x14/0x20 [ 79.182105] ? ldsem_up_read+0x27/0x50 [ 79.185975] ? tty_ldisc_deref+0x30/0x40 [ 79.190021] ? kasan_check_read+0x11/0x20 [ 79.194182] ? rcu_is_watching+0x85/0x140 [ 79.198328] ? rcu_pm_notify+0xc0/0xc0 [ 79.202219] do_signal+0x98/0x2040 [ 79.205746] ? vfs_writev+0x1e9/0x320 [ 79.209538] ? setup_sigcontext+0x7d0/0x7d0 [ 79.213854] ? wait_for_completion+0x870/0x870 [ 79.218447] ? exit_to_usermode_loop+0x8a/0x2a0 [ 79.223154] exit_to_usermode_loop+0x1bf/0x2a0 [ 79.227732] ? vfs_writev+0x320/0x320 [ 79.231516] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 79.236351] do_syscall_64+0x573/0x6e0 [ 79.240325] ? finish_task_switch+0x1ca/0x810 [ 79.245428] ? syscall_return_slowpath+0x4c0/0x4c0 [ 79.250344] ? syscall_return_slowpath+0x20c/0x4c0 [ 79.255261] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 79.260610] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 79.265440] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 79.270617] RIP: 0033:0x455b59 [ 79.273792] RSP: 002b:00007f4f3cfeec68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 79.281493] RAX: fffffffffffffe00 RBX: 00007f4f3cfef6d4 RCX: 0000000000455b59 [ 79.288751] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 79.296092] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 79.303344] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 79.310719] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 79.318009] CPU: 0 PID: 5841 Comm: syz-executor2 Not tainted 4.17.0-rc3-syzkaller #0 [ 79.318470] FAULT_INJECTION: forcing a failure. [ 79.318470] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 79.325899] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 79.325903] Call Trace: [ 79.325916] dump_stack+0x162/0x21a [ 79.325923] ? dump_stack_print_info.cold.2+0x48/0x48 [ 79.325935] should_fail.cold.4+0x5/0xd [ 79.325943] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 79.367473] ? __lock_acquire+0x7f5/0x5140 [ 79.371694] ? print_usage_bug+0xc0/0xc0 [ 79.375747] ? rb_erase_cached+0xc6a/0x32a0 [ 79.380055] ? __lock_acquire+0x7f5/0x5140 [ 79.384281] ? rb_next+0x140/0x140 [ 79.387817] ? __lock_acquire+0x7f5/0x5140 [ 79.392134] ? check_noncircular+0x20/0x20 [ 79.396352] ? __lock_acquire+0x7f5/0x5140 [ 79.400587] get_futex_key+0x2c3/0x1d10 [ 79.404547] ? graph_lock+0x170/0x170 [ 79.408345] ? __lock_acquire+0x7f5/0x5140 [ 79.412567] ? __lock_acquire+0x7f5/0x5140 [ 79.416805] ? futex_lock_pi_atomic+0x2a0/0x2a0 [ 79.421474] ? rb_erase_cached+0xc6a/0x32a0 [ 79.425828] ? debug_check_no_locks_freed+0x310/0x310 [ 79.431027] ? graph_lock+0x170/0x170 [ 79.434992] ? print_usage_bug+0xc0/0xc0 [ 79.439041] ? lock_downgrade+0x8e0/0x8e0 [ 79.443179] ? graph_lock+0x170/0x170 [ 79.446963] ? find_held_lock+0x36/0x1c0 [ 79.451022] ? check_noncircular+0x20/0x20 [ 79.455244] ? graph_lock+0x170/0x170 [ 79.459030] ? lock_downgrade+0x8e0/0x8e0 [ 79.463170] ? find_held_lock+0x36/0x1c0 [ 79.467223] ? lock_downgrade+0x8e0/0x8e0 [ 79.471370] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 79.475850] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 79.480421] ? __free_pages_ok+0x1b70/0x2bd0 [ 79.484838] ? print_usage_bug+0xc0/0xc0 [ 79.488884] ? trace_hardirqs_on+0xd/0x10 [ 79.493017] ? print_usage_bug+0xc0/0xc0 [ 79.497071] ? print_usage_bug+0xc0/0xc0 [ 79.501116] ? print_usage_bug+0xc0/0xc0 [ 79.505160] ? update_load_avg+0x2d9/0x2570 [ 79.509474] futex_wake+0x15c/0x890 [ 79.513094] ? get_futex_key+0x1d10/0x1d10 [ 79.517310] ? __lock_acquire+0x7f5/0x5140 [ 79.521542] ? __lock_acquire+0x7f5/0x5140 [ 79.525769] do_futex+0x890/0x2620 [ 79.529507] ? debug_check_no_locks_freed+0x310/0x310 [ 79.534684] ? __lock_acquire+0x7f5/0x5140 [ 79.538916] ? exit_robust_list+0x1b0/0x1b0 [ 79.543225] ? debug_check_no_locks_freed+0x310/0x310 [ 79.548472] ? graph_lock+0x170/0x170 [ 79.552436] ? debug_check_no_locks_freed+0x310/0x310 [ 79.557619] ? graph_lock+0x170/0x170 [ 79.561404] ? __lock_acquire+0x7f5/0x5140 [ 79.565636] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 79.570809] ? graph_lock+0x170/0x170 [ 79.574595] ? find_held_lock+0x36/0x1c0 [ 79.578731] ? graph_lock+0x170/0x170 [ 79.582513] ? find_held_lock+0x36/0x1c0 [ 79.586599] ? find_held_lock+0x36/0x1c0 [ 79.591531] ? find_held_lock+0x36/0x1c0 [ 79.595591] ? lock_downgrade+0x8e0/0x8e0 [ 79.599727] ? lock_release+0xa10/0xa10 [ 79.604235] ? check_same_owner+0x320/0x320 [ 79.608543] ? __might_sleep+0x95/0x190 [ 79.612507] ? native_load_gs_index+0x2d/0x30 [ 79.617000] ? __might_sleep+0x95/0x190 [ 79.620967] mm_release+0x3ec/0x540 [ 79.624590] ? mm_access+0x120/0x120 [ 79.628293] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 79.633297] ? trace_hardirqs_on+0xd/0x10 [ 79.637453] ? _raw_spin_unlock_irq+0x27/0x70 [ 79.641956] ? acct_collect+0x64f/0x7c0 [ 79.645917] ? trace_hardirqs_on+0xd/0x10 [ 79.650052] do_exit+0x4b5/0x22f0 [ 79.653498] ? mm_update_next_owner+0xbd0/0xbd0 [ 79.658152] ? print_usage_bug+0xc0/0xc0 [ 79.662197] ? free_unref_page+0x9d0/0x9d0 [ 79.666423] ? trace_hardirqs_on+0xd/0x10 [ 79.670558] ? kasan_check_write+0x14/0x20 [ 79.674794] ? finish_task_switch+0x59e/0x810 [ 79.679277] ? __lock_acquire+0x7f5/0x5140 [ 79.683497] ? lock_repin_lock+0x410/0x410 [ 79.687722] ? debug_check_no_locks_freed+0x310/0x310 [ 79.692899] ? pci_mmcfg_check_reserved+0x120/0x120 [ 79.697900] ? graph_lock+0x170/0x170 [ 79.701681] ? graph_lock+0x170/0x170 [ 79.705470] ? graph_lock+0x170/0x170 [ 79.709253] ? __mutex_lock+0x95d/0x17f0 [ 79.713300] ? graph_lock+0x170/0x170 [ 79.717087] ? find_held_lock+0x36/0x1c0 [ 79.721143] ? graph_lock+0x170/0x170 [ 79.724934] ? memset+0x31/0x40 [ 79.728199] ? find_held_lock+0x36/0x1c0 [ 79.732603] ? recalc_sigpending+0x6a/0x150 [ 79.736911] ? lock_downgrade+0x8e0/0x8e0 [ 79.741040] ? do_signal_stop+0x37a/0x8e0 [ 79.745177] do_group_exit+0x135/0x3b0 [ 79.749051] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 79.753621] ? __ia32_sys_exit+0x50/0x50 [ 79.757684] ? _raw_spin_unlock_irq+0x27/0x70 [ 79.762162] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 79.767177] get_signal+0x6a9/0x1480 [ 79.770883] ? ptrace_notify+0x110/0x110 [ 79.774928] ? kasan_check_write+0x14/0x20 [ 79.779250] ? ldsem_up_read+0x27/0x50 [ 79.783126] ? tty_ldisc_deref+0x30/0x40 [ 79.787175] ? kasan_check_read+0x11/0x20 [ 79.791318] ? rcu_is_watching+0x85/0x140 [ 79.795449] ? rcu_pm_notify+0xc0/0xc0 [ 79.799337] do_signal+0x98/0x2040 [ 79.803127] ? vfs_writev+0x1e9/0x320 [ 79.806918] ? setup_sigcontext+0x7d0/0x7d0 [ 79.811228] ? wait_for_completion+0x870/0x870 [ 79.815811] ? exit_to_usermode_loop+0x8a/0x2a0 [ 79.820473] exit_to_usermode_loop+0x1bf/0x2a0 [ 79.825128] ? vfs_writev+0x320/0x320 [ 79.828924] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 79.833770] do_syscall_64+0x573/0x6e0 [ 79.837643] ? syscall_return_slowpath+0x4c0/0x4c0 [ 79.842559] ? syscall_return_slowpath+0x20c/0x4c0 [ 79.847494] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 79.852873] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 79.857729] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 79.863100] RIP: 0033:0x455b59 [ 79.866307] RSP: 002b:00007f15bba38c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 79.874095] RAX: fffffffffffffe00 RBX: 00007f15bba396d4 RCX: 0000000000455b59 [ 79.881379] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 79.888644] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 79.896092] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 79.903347] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 79.910636] CPU: 1 PID: 5843 Comm: syz-executor4 Not tainted 4.17.0-rc3-syzkaller #0 [ 79.918531] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 79.927893] Call Trace: [ 79.930480] dump_stack+0x162/0x21a [ 79.934099] ? dump_stack_print_info.cold.2+0x48/0x48 [ 79.939284] ? __account_cfs_rq_runtime+0x600/0x600 [ 79.944483] ? reweight_entity+0x7d2/0x10e0 [ 79.948820] should_fail.cold.4+0x5/0xd [ 79.952796] ? graph_lock+0x170/0x170 [ 79.956595] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 79.961703] ? lock_acquire+0x1dc/0x520 [ 79.965712] ? find_held_lock+0x36/0x1c0 [ 79.969947] ? lock_downgrade+0x8e0/0x8e0 [ 79.974119] ? kasan_check_read+0x11/0x20 [ 79.978264] ? rcu_is_watching+0x85/0x140 [ 79.982414] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 79.987610] ? rcu_read_lock+0x70/0x70 [ 79.991518] __alloc_pages_nodemask+0x34e/0xd70 [ 79.996184] ? page_remove_rmap+0x4eb/0xe00 [ 80.000504] ? __alloc_pages_slowpath+0x2db0/0x2db0 [ 80.005531] ? __lock_acquire+0x7f5/0x5140 [ 80.009764] ? __lock_acquire+0x7f5/0x5140 [ 80.014125] ? print_usage_bug+0xc0/0xc0 [ 80.018188] ? lock_acquire+0x1dc/0x520 [ 80.022164] ? lock_release+0xa10/0xa10 [ 80.026155] alloc_pages_current+0xd6/0x1b0 [ 80.030475] __get_free_pages+0xf/0x40 [ 80.034356] __tlb_remove_page_size+0x26b/0x4d0 [ 80.039021] unmap_page_range+0xc2c/0x1ff0 [ 80.043261] ? vm_normal_page_pmd+0x330/0x330 [ 80.044462] FAULT_INJECTION: forcing a failure. [ 80.044462] name fail_futex, interval 1, probability 0, space 0, times 0 [ 80.047757] ? kasan_check_read+0x11/0x20 [ 80.047765] ? rcu_is_watching+0x85/0x140 [ 80.047769] ? kasan_check_read+0x11/0x20 [ 80.047774] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 80.047780] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 80.047786] ? __lock_acquire+0x7f5/0x5140 [ 80.047796] ? is_bpf_text_address+0x81/0xe0 [ 80.047804] ? kernel_text_address+0x79/0xf0 [ 80.095235] ? __unwind_start+0x166/0x330 [ 80.099372] ? unwind_get_return_address+0x61/0xa0 [ 80.105073] ? __save_stack_trace+0x7e/0xd0 [ 80.109403] ? save_stack+0xa9/0xd0 [ 80.113105] ? save_stack+0x43/0xd0 [ 80.116719] ? __kasan_slab_free+0x11a/0x170 [ 80.121137] ? kmem_cache_free+0x86/0x2d0 [ 80.125271] ? __khugepaged_exit+0x39a/0x630 [ 80.129680] ? mmput+0x429/0x550 [ 80.133035] ? do_exit+0xd0f/0x22f0 [ 80.136649] ? do_group_exit+0x135/0x3b0 [ 80.140697] ? get_signal+0x6a9/0x1480 [ 80.144567] ? do_signal+0x98/0x2040 [ 80.148283] ? exit_to_usermode_loop+0x1bf/0x2a0 [ 80.153155] ? do_syscall_64+0x573/0x6e0 [ 80.157209] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 80.162563] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 80.167045] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 80.171615] ? kasan_check_write+0x14/0x20 [ 80.175859] ? do_raw_spin_lock+0xc1/0x200 [ 80.180083] ? uprobe_mmap+0xc10/0xc10 [ 80.183954] ? trace_hardirqs_off+0xd/0x10 [ 80.188176] ? _raw_spin_unlock_irqrestore+0x63/0xc0 [ 80.193268] ? debug_check_no_obj_freed+0x2ff/0x584 [ 80.198294] ? kasan_check_read+0x11/0x20 [ 80.202444] unmap_single_vma+0x121/0x300 [ 80.206767] unmap_vmas+0xe2/0x190 [ 80.210298] exit_mmap+0x209/0x430 [ 80.213825] ? __ia32_sys_munmap+0x70/0x70 [ 80.218057] ? __khugepaged_exit+0x3a8/0x630 [ 80.222485] ? __might_sleep+0x95/0x190 [ 80.226452] mmput+0x1f4/0x550 [ 80.229633] ? lock_downgrade+0x8e0/0x8e0 [ 80.233915] ? set_mm_exe_file+0x1f0/0x1f0 [ 80.238161] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 80.242650] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 80.247223] ? kasan_check_write+0x14/0x20 [ 80.251446] ? do_raw_spin_lock+0xc1/0x200 [ 80.255680] do_exit+0xd0f/0x22f0 [ 80.259125] ? mm_update_next_owner+0xbd0/0xbd0 [ 80.263780] ? print_usage_bug+0xc0/0xc0 [ 80.267853] ? __lock_acquire+0x7f5/0x5140 [ 80.272073] ? print_usage_bug+0xc0/0xc0 [ 80.276122] ? __lock_acquire+0x7f5/0x5140 [ 80.280435] ? debug_check_no_locks_freed+0x310/0x310 [ 80.285615] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 80.290093] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 80.294660] ? graph_lock+0x170/0x170 [ 80.298444] ? graph_lock+0x170/0x170 [ 80.302230] ? graph_lock+0x170/0x170 [ 80.306022] ? _raw_spin_unlock+0x22/0x30 [ 80.310174] ? __mutex_lock+0x95d/0x17f0 [ 80.314221] ? graph_lock+0x170/0x170 [ 80.318108] ? graph_lock+0x170/0x170 [ 80.321895] ? graph_lock+0x170/0x170 [ 80.325787] ? graph_lock+0x170/0x170 [ 80.329588] ? print_usage_bug+0xc0/0xc0 [ 80.333641] ? memset+0x31/0x40 [ 80.336903] ? find_held_lock+0x36/0x1c0 [ 80.340953] ? recalc_sigpending+0x6a/0x150 [ 80.345260] ? lock_downgrade+0x8e0/0x8e0 [ 80.349414] do_group_exit+0x135/0x3b0 [ 80.353289] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 80.357858] ? __ia32_sys_exit+0x50/0x50 [ 80.361921] ? _raw_spin_unlock_irq+0x27/0x70 [ 80.366403] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 80.371419] get_signal+0x6a9/0x1480 [ 80.375151] ? ptrace_notify+0x110/0x110 [ 80.379217] ? kasan_check_write+0x14/0x20 [ 80.383448] ? ldsem_up_read+0x27/0x50 [ 80.387326] ? tty_ldisc_deref+0x30/0x40 [ 80.391646] ? kasan_check_read+0x11/0x20 [ 80.395783] ? rcu_is_watching+0x85/0x140 [ 80.399915] ? rcu_pm_notify+0xc0/0xc0 [ 80.403902] do_signal+0x98/0x2040 [ 80.407476] ? vfs_writev+0x1e9/0x320 [ 80.411295] ? setup_sigcontext+0x7d0/0x7d0 [ 80.415691] ? wait_for_completion+0x870/0x870 [ 80.420274] ? exit_to_usermode_loop+0x8a/0x2a0 [ 80.424930] exit_to_usermode_loop+0x1bf/0x2a0 [ 80.429507] ? vfs_writev+0x320/0x320 [ 80.433298] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 80.438139] do_syscall_64+0x573/0x6e0 [ 80.442016] ? finish_task_switch+0x1ca/0x810 [ 80.447643] ? syscall_return_slowpath+0x4c0/0x4c0 [ 80.452753] ? syscall_return_slowpath+0x20c/0x4c0 [ 80.457783] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 80.463159] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 80.468001] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 80.473197] RIP: 0033:0x455b59 [ 80.476371] RSP: 002b:00007f6347782c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 80.484071] RAX: fffffffffffffe00 RBX: 00007f63477836d4 RCX: 0000000000455b59 [ 80.491674] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 80.498928] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 80.506185] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 80.513611] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 80.520896] CPU: 0 PID: 5837 Comm: syz-executor3 Not tainted 4.17.0-rc3-syzkaller #0 [ 80.529309] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 80.538682] Call Trace: [ 80.541278] dump_stack+0x162/0x21a [ 80.545009] ? dump_stack_print_info.cold.2+0x48/0x48 [ 80.551365] should_fail.cold.4+0x5/0xd [ 80.555439] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 80.560553] ? __lock_acquire+0x7f5/0x5140 [ 80.564799] ? print_usage_bug+0xc0/0xc0 [ 80.568869] ? debug_check_no_locks_freed+0x310/0x310 [ 80.574069] ? __lock_acquire+0x7f5/0x5140 [ 80.578311] ? print_usage_bug+0xc0/0xc0 [ 80.582385] ? __lock_acquire+0x7f5/0x5140 [ 80.586640] ? check_noncircular+0x20/0x20 [ 80.590904] ? __lock_acquire+0x7f5/0x5140 [ 80.595153] get_futex_key+0x2c3/0x1d10 [ 80.599159] ? graph_lock+0x170/0x170 [ 80.602960] ? __lock_acquire+0x7f5/0x5140 [ 80.607196] ? __lock_acquire+0x7f5/0x5140 [ 80.611433] ? futex_lock_pi_atomic+0x2a0/0x2a0 [ 80.616194] ? rb_erase_cached+0xc6a/0x32a0 [ 80.620527] ? debug_check_no_locks_freed+0x310/0x310 [ 80.625729] ? graph_lock+0x170/0x170 [ 80.629538] ? print_usage_bug+0xc0/0xc0 [ 80.633607] ? lock_downgrade+0x8e0/0x8e0 [ 80.637755] ? graph_lock+0x170/0x170 [ 80.641556] ? find_held_lock+0x36/0x1c0 [ 80.645623] ? check_noncircular+0x20/0x20 [ 80.649853] ? graph_lock+0x170/0x170 [ 80.653655] ? lock_downgrade+0x8e0/0x8e0 [ 80.658330] ? find_held_lock+0x36/0x1c0 [ 80.662418] ? lock_downgrade+0x8e0/0x8e0 [ 80.666563] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 80.671050] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 80.675627] ? kasan_check_write+0x14/0x20 [ 80.679852] ? __free_pages_ok+0x1b70/0x2bd0 [ 80.684273] ? print_usage_bug+0xc0/0xc0 [ 80.688446] ? trace_hardirqs_on+0xd/0x10 [ 80.692585] ? print_usage_bug+0xc0/0xc0 [ 80.696638] ? print_usage_bug+0xc0/0xc0 [ 80.700776] ? print_usage_bug+0xc0/0xc0 [ 80.704831] ? update_load_avg+0x2d9/0x2570 2019/11/25 02:23:31 executed programs: 28 [ 80.709153] futex_wake+0x15c/0x890 [ 80.712776] ? get_futex_key+0x1d10/0x1d10 [ 80.716999] ? __lock_acquire+0x7f5/0x5140 [ 80.721229] ? __lock_acquire+0x7f5/0x5140 [ 80.725470] do_futex+0x890/0x2620 [ 80.729017] ? debug_check_no_locks_freed+0x310/0x310 [ 80.734215] ? __lock_acquire+0x7f5/0x5140 [ 80.738456] ? exit_robust_list+0x1b0/0x1b0 [ 80.742781] ? debug_check_no_locks_freed+0x310/0x310 [ 80.747974] ? graph_lock+0x170/0x170 [ 80.751766] ? debug_check_no_locks_freed+0x310/0x310 [ 80.756954] ? graph_lock+0x170/0x170 [ 80.760750] ? __lock_acquire+0x7f5/0x5140 [ 80.764983] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 80.770163] ? graph_lock+0x170/0x170 [ 80.773957] ? find_held_lock+0x36/0x1c0 [ 80.778009] ? graph_lock+0x170/0x170 [ 80.781802] ? find_held_lock+0x36/0x1c0 [ 80.785857] ? find_held_lock+0x36/0x1c0 [ 80.789917] ? find_held_lock+0x36/0x1c0 [ 80.794067] ? lock_downgrade+0x8e0/0x8e0 [ 80.798209] ? lock_release+0xa10/0xa10 [ 80.802780] ? check_same_owner+0x320/0x320 [ 80.807102] ? __might_sleep+0x95/0x190 [ 80.811066] ? native_load_gs_index+0x2d/0x30 [ 80.815566] ? __might_sleep+0x95/0x190 [ 80.819547] mm_release+0x3ec/0x540 [ 80.823170] ? mm_access+0x120/0x120 [ 80.826881] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 80.832266] ? trace_hardirqs_on+0xd/0x10 [ 80.836416] ? _raw_spin_unlock_irq+0x27/0x70 [ 80.840914] ? acct_collect+0x64f/0x7c0 [ 80.844891] ? trace_hardirqs_on+0xd/0x10 [ 80.849041] do_exit+0x4b5/0x22f0 [ 80.852496] ? mm_update_next_owner+0xbd0/0xbd0 [ 80.857162] ? print_usage_bug+0xc0/0xc0 [ 80.857364] FAULT_INJECTION: forcing a failure. [ 80.857364] name fail_futex, interval 1, probability 0, space 0, times 0 [ 80.861217] ? free_unref_page+0x9d0/0x9d0 [ 80.861226] ? trace_hardirqs_on+0xd/0x10 [ 80.861238] ? kasan_check_write+0x14/0x20 [ 80.861245] ? finish_task_switch+0x59e/0x810 [ 80.861253] ? __lock_acquire+0x7f5/0x5140 [ 80.861259] ? lock_repin_lock+0x410/0x410 [ 80.861271] ? debug_check_no_locks_freed+0x310/0x310 [ 80.861283] ? pci_mmcfg_check_reserved+0x120/0x120 [ 80.861290] ? graph_lock+0x170/0x170 [ 80.912088] ? graph_lock+0x170/0x170 [ 80.915896] ? graph_lock+0x170/0x170 [ 80.919704] ? __mutex_lock+0x95d/0x17f0 [ 80.923764] ? graph_lock+0x170/0x170 [ 80.927709] ? find_held_lock+0x36/0x1c0 [ 80.932390] ? graph_lock+0x170/0x170 [ 80.936196] ? memset+0x31/0x40 [ 80.939463] ? find_held_lock+0x36/0x1c0 [ 80.943525] ? recalc_sigpending+0x6a/0x150 [ 80.947847] ? lock_downgrade+0x8e0/0x8e0 [ 80.951991] ? do_signal_stop+0x37a/0x8e0 [ 80.956129] do_group_exit+0x135/0x3b0 [ 80.960001] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 80.964570] ? __ia32_sys_exit+0x50/0x50 [ 80.968614] ? _raw_spin_unlock_irq+0x27/0x70 [ 80.973095] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 80.978112] get_signal+0x6a9/0x1480 [ 80.981822] ? ptrace_notify+0x110/0x110 [ 80.985876] ? kasan_check_write+0x14/0x20 [ 80.990095] ? ldsem_up_read+0x27/0x50 [ 80.993975] ? tty_ldisc_deref+0x30/0x40 [ 80.998026] ? kasan_check_read+0x11/0x20 [ 81.002172] ? rcu_is_watching+0x85/0x140 [ 81.006303] ? rcu_pm_notify+0xc0/0xc0 [ 81.010183] do_signal+0x98/0x2040 [ 81.013708] ? vfs_writev+0x1e9/0x320 [ 81.017522] ? setup_sigcontext+0x7d0/0x7d0 [ 81.021850] ? wait_for_completion+0x870/0x870 [ 81.026448] ? exit_to_usermode_loop+0x8a/0x2a0 [ 81.031104] exit_to_usermode_loop+0x1bf/0x2a0 [ 81.035697] ? vfs_writev+0x320/0x320 [ 81.039493] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 81.045557] do_syscall_64+0x573/0x6e0 [ 81.049432] ? syscall_return_slowpath+0x4c0/0x4c0 [ 81.054360] ? syscall_return_slowpath+0x20c/0x4c0 [ 81.059282] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 81.064722] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 81.069683] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 81.074919] RIP: 0033:0x455b59 [ 81.078094] RSP: 002b:00007efee9daec68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 81.085790] RAX: fffffffffffffe00 RBX: 00007efee9daf6d4 RCX: 0000000000455b59 [ 81.093046] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 81.100299] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 81.107667] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 81.115017] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 81.122313] CPU: 1 PID: 5859 Comm: syz-executor5 Not tainted 4.17.0-rc3-syzkaller #0 [ 81.130201] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 81.139556] Call Trace: [ 81.142145] dump_stack+0x162/0x21a [ 81.146208] ? dump_stack_print_info.cold.2+0x48/0x48 [ 81.151411] should_fail.cold.4+0x5/0xd [ 81.155407] ? debug_check_no_locks_freed+0x310/0x310 [ 81.160606] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 81.165709] ? __lock_acquire+0x7f5/0x5140 [ 81.169950] ? debug_check_no_locks_freed+0x310/0x310 [ 81.175135] ? graph_lock+0x170/0x170 [ 81.179033] ? graph_lock+0x170/0x170 [ 81.183002] ? find_held_lock+0x36/0x1c0 [ 81.187068] get_futex_key+0x2c3/0x1d10 [ 81.191041] ? graph_lock+0x170/0x170 [ 81.194833] ? futex_lock_pi_atomic+0x2a0/0x2a0 [ 81.199494] ? lock_downgrade+0x8e0/0x8e0 [ 81.203644] ? find_held_lock+0x36/0x1c0 [ 81.207696] ? print_usage_bug+0xc0/0xc0 [ 81.211757] ? lock_downgrade+0x8e0/0x8e0 [ 81.215901] ? mark_held_locks+0xc9/0x160 [ 81.220075] ? check_noncircular+0x20/0x20 [ 81.224408] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 81.229443] ? trace_hardirqs_on+0xd/0x10 [ 81.233600] ? update_load_avg+0x2d9/0x2570 [ 81.237949] ? free_unref_page_commit.isra.91+0x5f0/0x5f0 [ 81.243578] ? attach_entity_load_avg+0x850/0x850 [ 81.248431] ? attach_entity_load_avg+0x850/0x850 [ 81.253304] ? graph_lock+0x170/0x170 [ 81.257100] ? print_usage_bug+0xc0/0xc0 [ 81.261176] ? __lock_acquire+0x7f5/0x5140 [ 81.265415] ? graph_lock+0x170/0x170 [ 81.269226] ? find_held_lock+0x36/0x1c0 [ 81.273301] ? print_usage_bug+0xc0/0xc0 [ 81.277366] ? print_usage_bug+0xc0/0xc0 [ 81.281424] ? print_usage_bug+0xc0/0xc0 [ 81.285482] ? print_usage_bug+0xc0/0xc0 [ 81.289544] futex_wake+0x15c/0x890 [ 81.293345] ? get_futex_key+0x1d10/0x1d10 [ 81.297570] ? __lock_acquire+0x7f5/0x5140 [ 81.301804] ? __lock_acquire+0x7f5/0x5140 [ 81.306040] do_futex+0x890/0x2620 [ 81.309578] ? debug_check_no_locks_freed+0x310/0x310 [ 81.314763] ? __lock_acquire+0x7f5/0x5140 [ 81.317369] FAULT_INJECTION: forcing a failure. [ 81.317369] name fail_futex, interval 1, probability 0, space 0, times 0 [ 81.319014] ? exit_robust_list+0x1b0/0x1b0 [ 81.319025] ? debug_check_no_locks_freed+0x310/0x310 [ 81.319032] ? graph_lock+0x170/0x170 [ 81.319037] ? debug_check_no_locks_freed+0x310/0x310 [ 81.319043] ? print_usage_bug+0xc0/0xc0 [ 81.319048] ? graph_lock+0x170/0x170 [ 81.319054] ? graph_lock+0x170/0x170 [ 81.319061] ? find_held_lock+0x36/0x1c0 [ 81.319067] ? graph_lock+0x170/0x170 [ 81.319071] ? find_held_lock+0x36/0x1c0 [ 81.319078] ? find_held_lock+0x36/0x1c0 [ 81.319089] ? find_held_lock+0x36/0x1c0 [ 81.319100] ? lock_downgrade+0x8e0/0x8e0 [ 81.319107] ? lock_release+0xa10/0xa10 [ 81.319114] ? check_same_owner+0x320/0x320 [ 81.319121] ? __might_sleep+0x95/0x190 [ 81.397703] ? native_load_gs_index+0x2d/0x30 [ 81.402190] ? __might_sleep+0x95/0x190 [ 81.406155] mm_release+0x3ec/0x540 [ 81.409768] ? mm_access+0x120/0x120 [ 81.413470] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 81.418475] ? trace_hardirqs_on+0xd/0x10 [ 81.422609] ? _raw_spin_unlock_irq+0x27/0x70 [ 81.427093] ? acct_collect+0x64f/0x7c0 [ 81.431050] ? trace_hardirqs_on+0xd/0x10 [ 81.435186] do_exit+0x4b5/0x22f0 [ 81.438627] ? find_held_lock+0x36/0x1c0 [ 81.442676] ? mm_update_next_owner+0xbd0/0xbd0 [ 81.447336] ? print_usage_bug+0xc0/0xc0 [ 81.451380] ? graph_lock+0x170/0x170 [ 81.455162] ? graph_lock+0x170/0x170 [ 81.459039] ? kasan_check_read+0x11/0x20 [ 81.463174] ? rcu_is_watching+0x85/0x140 [ 81.467311] ? __lock_acquire+0x7f5/0x5140 [ 81.471822] ? debug_check_no_locks_freed+0x310/0x310 [ 81.476992] ? memset+0x31/0x40 [ 81.480259] ? debug_mutex_free_waiter+0xfe/0x1b0 [ 81.485084] ? debug_mutex_wake_waiter+0x620/0x620 [ 81.489999] ? kasan_check_write+0x14/0x20 [ 81.494235] ? do_raw_spin_lock+0xc1/0x200 [ 81.498462] ? __mutex_lock+0x787/0x17f0 [ 81.502507] ? tty_write_lock+0x2c/0x50 [ 81.506469] ? mutex_trylock+0x2a0/0x2a0 [ 81.510532] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 81.515725] ? graph_lock+0x170/0x170 [ 81.519514] ? lock_acquire+0x1dc/0x520 [ 81.523475] ? ldsem_down_read+0x32/0x40 [ 81.527526] ? memset+0x31/0x40 [ 81.530792] ? find_held_lock+0x36/0x1c0 [ 81.534842] ? recalc_sigpending+0xad/0x150 [ 81.539148] ? lock_downgrade+0x8e0/0x8e0 [ 81.543286] do_group_exit+0x135/0x3b0 [ 81.547161] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 81.551732] ? __ia32_sys_exit+0x50/0x50 [ 81.555789] ? _raw_spin_unlock_irq+0x27/0x70 [ 81.560271] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 81.565279] get_signal+0x6a9/0x1480 [ 81.569000] ? ptrace_notify+0x110/0x110 [ 81.573050] ? kasan_check_write+0x14/0x20 [ 81.577361] ? ldsem_up_read+0x27/0x50 [ 81.581232] ? tty_ldisc_deref+0x30/0x40 [ 81.585279] ? kasan_check_read+0x11/0x20 [ 81.589411] ? rcu_is_watching+0x85/0x140 [ 81.593558] ? rw_verify_area+0xb8/0x2b0 [ 81.597625] ? rcu_pm_notify+0xc0/0xc0 [ 81.601506] do_signal+0x98/0x2040 [ 81.605035] ? vfs_writev+0x1e9/0x320 [ 81.608821] ? setup_sigcontext+0x7d0/0x7d0 [ 81.613131] ? wait_for_completion+0x870/0x870 [ 81.617719] ? exit_to_usermode_loop+0x8a/0x2a0 [ 81.622400] exit_to_usermode_loop+0x1bf/0x2a0 [ 81.626967] ? vfs_writev+0x320/0x320 [ 81.631019] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 81.635859] do_syscall_64+0x573/0x6e0 [ 81.639731] ? finish_task_switch+0x1ca/0x810 [ 81.644242] ? syscall_return_slowpath+0x4c0/0x4c0 [ 81.649171] ? syscall_return_slowpath+0x20c/0x4c0 [ 81.654087] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 81.659459] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 81.664291] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 81.669463] RIP: 0033:0x455b59 [ 81.672636] RSP: 002b:00007f7244173c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 81.681284] RAX: fffffffffffffe00 RBX: 00007f72441746d4 RCX: 0000000000455b59 [ 81.688548] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 81.695805] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 81.703614] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 81.710884] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 81.718152] CPU: 0 PID: 5861 Comm: syz-executor1 Not tainted 4.17.0-rc3-syzkaller #0 [ 81.728778] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 81.738139] Call Trace: [ 81.740735] dump_stack+0x162/0x21a [ 81.744371] ? dump_stack_print_info.cold.2+0x48/0x48 [ 81.749753] should_fail.cold.4+0x5/0xd [ 81.754193] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 81.759469] ? __lock_acquire+0x7f5/0x5140 [ 81.763873] ? print_usage_bug+0xc0/0xc0 [ 81.767925] ? rb_erase_cached+0xc6a/0x32a0 [ 81.772240] ? __lock_acquire+0x7f5/0x5140 [ 81.776470] ? rb_next+0x140/0x140 [ 81.780522] ? kasan_alloc_pages+0x38/0x40 [ 81.784745] ? get_page_from_freelist+0x10ff/0x4f00 [ 81.789762] ? check_noncircular+0x20/0x20 [ 81.793997] get_futex_key+0x2c3/0x1d10 [ 81.797972] ? __isolate_free_page+0x7c0/0x7c0 [ 81.802564] ? __lock_acquire+0x7f5/0x5140 [ 81.806810] ? __lock_acquire+0x7f5/0x5140 [ 81.811576] ? futex_lock_pi_atomic+0x2a0/0x2a0 [ 81.816257] ? rb_erase_cached+0xc6a/0x32a0 [ 81.820647] ? debug_check_no_locks_freed+0x310/0x310 [ 81.825843] ? graph_lock+0x170/0x170 [ 81.829655] ? print_usage_bug+0xc0/0xc0 [ 81.833722] ? lock_downgrade+0x8e0/0x8e0 [ 81.837881] ? graph_lock+0x170/0x170 [ 81.841688] ? find_held_lock+0x36/0x1c0 [ 81.845753] ? check_noncircular+0x20/0x20 [ 81.849988] ? graph_lock+0x170/0x170 [ 81.853804] ? lock_downgrade+0x8e0/0x8e0 [ 81.857961] ? find_held_lock+0x36/0x1c0 [ 81.862034] ? lock_downgrade+0x8e0/0x8e0 [ 81.866194] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 81.870785] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 81.875375] ? kasan_check_write+0x14/0x20 [ 81.879616] ? __free_pages_ok+0x1b70/0x2bd0 [ 81.884037] ? print_usage_bug+0xc0/0xc0 [ 81.888110] ? trace_hardirqs_on+0xd/0x10 [ 81.892258] ? print_usage_bug+0xc0/0xc0 [ 81.896313] ? print_usage_bug+0xc0/0xc0 [ 81.900365] ? print_usage_bug+0xc0/0xc0 [ 81.904428] ? update_load_avg+0x2d9/0x2570 [ 81.908747] futex_wake+0x15c/0x890 [ 81.912547] ? get_futex_key+0x1d10/0x1d10 [ 81.916776] ? __lock_acquire+0x7f5/0x5140 [ 81.921009] ? __lock_acquire+0x7f5/0x5140 [ 81.925249] do_futex+0x890/0x2620 [ 81.928786] ? debug_check_no_locks_freed+0x310/0x310 [ 81.933969] ? __lock_acquire+0x7f5/0x5140 [ 81.938203] ? exit_robust_list+0x1b0/0x1b0 [ 81.942612] ? debug_check_no_locks_freed+0x310/0x310 [ 81.947803] ? graph_lock+0x170/0x170 [ 81.951770] ? debug_check_no_locks_freed+0x310/0x310 [ 81.956954] ? graph_lock+0x170/0x170 [ 81.960741] ? __lock_acquire+0x7f5/0x5140 [ 81.965065] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 81.970261] ? graph_lock+0x170/0x170 [ 81.974087] ? find_held_lock+0x36/0x1c0 [ 81.978142] ? graph_lock+0x170/0x170 [ 81.981937] ? find_held_lock+0x36/0x1c0 [ 81.986013] ? find_held_lock+0x36/0x1c0 [ 81.990082] ? find_held_lock+0x36/0x1c0 [ 81.994155] ? lock_downgrade+0x8e0/0x8e0 [ 81.998411] ? lock_release+0xa10/0xa10 [ 82.002393] ? check_same_owner+0x320/0x320 [ 82.006711] ? __might_sleep+0x95/0x190 [ 82.010682] ? native_load_gs_index+0x2d/0x30 [ 82.015179] ? __might_sleep+0x95/0x190 [ 82.019154] mm_release+0x3ec/0x540 [ 82.022782] ? mm_access+0x120/0x120 [ 82.026494] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 82.031507] ? trace_hardirqs_on+0xd/0x10 [ 82.035655] ? _raw_spin_unlock_irq+0x27/0x70 [ 82.040181] ? acct_collect+0x64f/0x7c0 [ 82.044149] ? trace_hardirqs_on+0xd/0x10 [ 82.048311] do_exit+0x4b5/0x22f0 [ 82.051923] ? mm_update_next_owner+0xbd0/0xbd0 [ 82.056609] ? print_usage_bug+0xc0/0xc0 [ 82.060674] ? free_unref_page+0x9d0/0x9d0 [ 82.064911] ? trace_hardirqs_on+0xd/0x10 [ 82.069063] ? kasan_check_write+0x14/0x20 [ 82.073297] ? finish_task_switch+0x59e/0x810 [ 82.077794] ? __lock_acquire+0x7f5/0x5140 [ 82.082031] ? lock_repin_lock+0x410/0x410 [ 82.086270] ? debug_check_no_locks_freed+0x310/0x310 [ 82.091461] ? pci_mmcfg_check_reserved+0x120/0x120 [ 82.096497] ? graph_lock+0x170/0x170 [ 82.100303] ? graph_lock+0x170/0x170 [ 82.104143] ? graph_lock+0x170/0x170 [ 82.107956] ? __mutex_lock+0x95d/0x17f0 [ 82.112016] ? graph_lock+0x170/0x170 [ 82.115825] ? find_held_lock+0x36/0x1c0 [ 82.119898] ? graph_lock+0x170/0x170 [ 82.123705] ? memset+0x31/0x40 [ 82.126986] ? find_held_lock+0x36/0x1c0 [ 82.131044] ? recalc_sigpending+0x6a/0x150 [ 82.135622] ? lock_downgrade+0x8e0/0x8e0 [ 82.139761] ? do_signal_stop+0x37a/0x8e0 [ 82.144044] do_group_exit+0x135/0x3b0 [ 82.147938] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 82.152535] ? __ia32_sys_exit+0x50/0x50 [ 82.156592] ? _raw_spin_unlock_irq+0x27/0x70 [ 82.161082] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 82.166087] get_signal+0x6a9/0x1480 [ 82.169798] ? ptrace_notify+0x110/0x110 [ 82.173871] ? kasan_check_write+0x14/0x20 [ 82.178119] ? ldsem_up_read+0x27/0x50 [ 82.182001] ? tty_ldisc_deref+0x30/0x40 [ 82.186059] ? kasan_check_read+0x11/0x20 [ 82.190208] ? rcu_is_watching+0x85/0x140 [ 82.194347] ? rcu_pm_notify+0xc0/0xc0 [ 82.198254] do_signal+0x98/0x2040 [ 82.201781] ? vfs_writev+0x1e9/0x320 [ 82.205580] ? setup_sigcontext+0x7d0/0x7d0 [ 82.210030] ? wait_for_completion+0x870/0x870 [ 82.214643] ? exit_to_usermode_loop+0x8a/0x2a0 [ 82.219315] exit_to_usermode_loop+0x1bf/0x2a0 [ 82.223897] ? vfs_writev+0x320/0x320 [ 82.227720] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 82.232781] do_syscall_64+0x573/0x6e0 [ 82.236662] ? finish_task_switch+0x1ca/0x810 [ 82.241153] ? syscall_return_slowpath+0x4c0/0x4c0 [ 82.246093] ? syscall_return_slowpath+0x20c/0x4c0 [ 82.251040] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 82.256429] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 82.261267] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 82.266445] RIP: 0033:0x455b59 [ 82.269715] RSP: 002b:00007f4f3cfeec68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 82.277529] RAX: fffffffffffffe00 RBX: 00007f4f3cfef6d4 RCX: 0000000000455b59 [ 82.284815] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 82.292090] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 82.299460] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 82.306721] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 82.812668] FAULT_INJECTION: forcing a failure. [ 82.812668] name fail_futex, interval 1, probability 0, space 0, times 0 [ 82.813929] FAULT_INJECTION: forcing a failure. [ 82.813929] name fail_futex, interval 1, probability 0, space 0, times 0 [ 82.824200] CPU: 0 PID: 5891 Comm: syz-executor Not tainted 4.17.0-rc3-syzkaller #0 [ 82.824208] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 82.852691] Call Trace: [ 82.855273] dump_stack+0x162/0x21a [ 82.858891] ? dump_stack_print_info.cold.2+0x48/0x48 [ 82.864081] should_fail.cold.4+0x5/0xd [ 82.868050] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 82.873257] ? debug_check_no_locks_freed+0x310/0x310 [ 82.878445] ? kasan_unpoison_shadow+0x35/0x50 [ 82.883039] ? kasan_alloc_pages+0x38/0x40 [ 82.887265] ? get_page_from_freelist+0x10ff/0x4f00 [ 82.892273] ? print_usage_bug+0xc0/0xc0 [ 82.896325] get_futex_key+0x2c3/0x1d10 [ 82.900296] ? __isolate_free_page+0x7c0/0x7c0 [ 82.904881] ? futex_lock_pi_atomic+0x2a0/0x2a0 [ 82.909534] ? rb_erase_cached+0xc6a/0x32a0 [ 82.913839] ? rb_next+0x140/0x140 [ 82.917385] ? print_usage_bug+0xc0/0xc0 [ 82.921440] ? __lock_acquire+0x7f5/0x5140 [ 82.925665] ? __lock_acquire+0x7f5/0x5140 [ 82.929900] ? graph_lock+0x170/0x170 [ 82.934640] ? __lock_acquire+0x7f5/0x5140 [ 82.938858] ? debug_check_no_locks_freed+0x310/0x310 [ 82.944034] ? check_noncircular+0x20/0x20 [ 82.948250] ? print_usage_bug+0xc0/0xc0 [ 82.952298] ? __update_load_avg_blocked_se.isra.33+0x460/0x460 [ 82.958426] ? print_usage_bug+0xc0/0xc0 [ 82.962482] ? update_load_avg+0x2d9/0x2570 [ 82.966802] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 82.971802] ? print_usage_bug+0xc0/0xc0 [ 82.975857] ? __lock_acquire+0x7f5/0x5140 [ 82.980075] ? graph_lock+0x170/0x170 [ 82.983954] ? print_usage_bug+0xc0/0xc0 [ 82.988013] ? graph_lock+0x170/0x170 [ 82.991797] ? graph_lock+0x170/0x170 [ 82.995583] ? __lock_acquire+0x7f5/0x5140 [ 82.999800] ? debug_check_no_locks_freed+0x310/0x310 [ 83.004972] ? graph_lock+0x170/0x170 [ 83.008754] ? find_held_lock+0x36/0x1c0 [ 83.012798] ? print_usage_bug+0xc0/0xc0 [ 83.016844] ? __update_load_avg_blocked_se.isra.33+0x460/0x460 [ 83.022884] ? print_usage_bug+0xc0/0xc0 [ 83.026934] ? print_usage_bug+0xc0/0xc0 [ 83.030980] ? print_usage_bug+0xc0/0xc0 [ 83.035025] ? update_load_avg+0x2d9/0x2570 [ 83.041325] ? update_load_avg+0x2d9/0x2570 [ 83.045633] futex_wake+0x15c/0x890 [ 83.049263] ? get_futex_key+0x1d10/0x1d10 [ 83.053503] ? __lock_acquire+0x7f5/0x5140 [ 83.057736] ? __lock_acquire+0x7f5/0x5140 [ 83.062002] do_futex+0x890/0x2620 [ 83.065562] ? debug_check_no_locks_freed+0x310/0x310 [ 83.070755] ? __lock_acquire+0x7f5/0x5140 [ 83.074981] ? exit_robust_list+0x1b0/0x1b0 [ 83.079311] ? debug_check_no_locks_freed+0x310/0x310 [ 83.084492] ? graph_lock+0x170/0x170 [ 83.088295] ? debug_check_no_locks_freed+0x310/0x310 [ 83.093482] ? graph_lock+0x170/0x170 [ 83.097264] ? task_numa_work+0xef0/0xef0 [ 83.101399] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 83.106570] ? graph_lock+0x170/0x170 [ 83.110358] ? find_held_lock+0x36/0x1c0 [ 83.114403] ? graph_lock+0x170/0x170 [ 83.118183] ? find_held_lock+0x36/0x1c0 [ 83.122254] ? find_held_lock+0x36/0x1c0 [ 83.126301] ? find_held_lock+0x36/0x1c0 [ 83.130355] ? lock_downgrade+0x8e0/0x8e0 [ 83.134488] ? lock_release+0xa10/0xa10 [ 83.138450] ? check_same_owner+0x320/0x320 [ 83.142769] ? __might_sleep+0x95/0x190 [ 83.147770] ? native_load_gs_index+0x2d/0x30 [ 83.152255] ? __might_sleep+0x95/0x190 [ 83.156220] mm_release+0x3ec/0x540 [ 83.159837] ? mm_access+0x120/0x120 [ 83.163536] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 83.168652] ? trace_hardirqs_on+0xd/0x10 [ 83.172796] ? _raw_spin_unlock_irq+0x27/0x70 [ 83.177477] ? acct_collect+0x64f/0x7c0 [ 83.181440] ? trace_hardirqs_on+0xd/0x10 [ 83.186539] do_exit+0x4b5/0x22f0 [ 83.190065] ? lock_downgrade+0x8e0/0x8e0 [ 83.194199] ? finish_task_switch+0x182/0x810 [ 83.198679] ? mm_update_next_owner+0xbd0/0xbd0 [ 83.203357] ? print_usage_bug+0xc0/0xc0 [ 83.207412] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 83.211917] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 83.217102] ? compat_start_thread+0x80/0x80 [ 83.221499] ? _raw_spin_unlock_irq+0x27/0x70 [ 83.227372] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 83.232478] ? trace_hardirqs_on+0xd/0x10 [ 83.236627] ? _raw_spin_unlock_irq+0x27/0x70 [ 83.241117] ? finish_task_switch+0x1ca/0x810 [ 83.245663] ? finish_task_switch+0x182/0x810 [ 83.250158] ? __lock_acquire+0x7f5/0x5140 [ 83.254380] ? lock_repin_lock+0x410/0x410 [ 83.258605] ? debug_check_no_locks_freed+0x310/0x310 [ 83.264225] ? pci_mmcfg_check_reserved+0x120/0x120 [ 83.269235] ? graph_lock+0x170/0x170 [ 83.273037] ? graph_lock+0x170/0x170 [ 83.276836] ? graph_lock+0x170/0x170 [ 83.280718] ? __mutex_lock+0x95d/0x17f0 [ 83.284762] ? graph_lock+0x170/0x170 [ 83.288561] ? find_held_lock+0x36/0x1c0 [ 83.292608] ? graph_lock+0x170/0x170 [ 83.296403] ? memset+0x31/0x40 [ 83.299667] ? find_held_lock+0x36/0x1c0 [ 83.305193] ? recalc_sigpending+0x6a/0x150 [ 83.309502] ? lock_downgrade+0x8e0/0x8e0 [ 83.313636] ? do_signal_stop+0x37a/0x8e0 [ 83.317869] do_group_exit+0x135/0x3b0 [ 83.321745] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 83.326308] ? __ia32_sys_exit+0x50/0x50 [ 83.330356] ? _raw_spin_unlock_irq+0x27/0x70 [ 83.334833] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 83.339838] get_signal+0x6a9/0x1480 [ 83.343549] ? ptrace_notify+0x110/0x110 [ 83.347593] ? kasan_check_write+0x14/0x20 [ 83.351811] ? ldsem_up_read+0x27/0x50 [ 83.355684] ? tty_ldisc_deref+0x30/0x40 [ 83.359749] ? kasan_check_read+0x11/0x20 [ 83.363880] ? rcu_is_watching+0x85/0x140 [ 83.368012] ? rcu_pm_notify+0xc0/0xc0 [ 83.371910] do_signal+0x98/0x2040 [ 83.375438] ? vfs_writev+0x1e9/0x320 [ 83.379228] ? setup_sigcontext+0x7d0/0x7d0 [ 83.383561] ? wait_for_completion+0x870/0x870 [ 83.388147] ? exit_to_usermode_loop+0x8a/0x2a0 [ 83.392801] exit_to_usermode_loop+0x1bf/0x2a0 [ 83.397396] ? vfs_writev+0x320/0x320 [ 83.401217] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 83.406071] do_syscall_64+0x573/0x6e0 [ 83.409946] ? syscall_return_slowpath+0x4c0/0x4c0 [ 83.414861] ? syscall_return_slowpath+0x20c/0x4c0 [ 83.421974] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 83.427327] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 83.432158] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 83.437338] RIP: 0033:0x455b59 [ 83.440511] RSP: 002b:00007f4020685c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 83.448388] RAX: fffffffffffffe00 RBX: 00007f40206866d4 RCX: 0000000000455b59 [ 83.455676] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 83.462945] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 83.470214] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 83.477491] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 83.484767] CPU: 1 PID: 5890 Comm: syz-executor4 Not tainted 4.17.0-rc3-syzkaller #0 [ 83.492673] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 83.496514] FAULT_INJECTION: forcing a failure. [ 83.496514] name fail_futex, interval 1, probability 0, space 0, times 0 [ 83.502027] Call Trace: [ 83.502041] dump_stack+0x162/0x21a [ 83.502049] ? dump_stack_print_info.cold.2+0x48/0x48 [ 83.502061] should_fail.cold.4+0x5/0xd [ 83.502068] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 83.502075] ? __lock_acquire+0x7f5/0x5140 [ 83.502084] ? debug_check_no_locks_freed+0x310/0x310 [ 83.543554] ? print_usage_bug+0xc0/0xc0 [ 83.547599] ? __lock_acquire+0x7f5/0x5140 [ 83.551830] ? check_noncircular+0x20/0x20 [ 83.556048] ? __lock_acquire+0x7f5/0x5140 [ 83.560287] get_futex_key+0x2c3/0x1d10 [ 83.564592] ? graph_lock+0x170/0x170 [ 83.568379] ? __lock_acquire+0x7f5/0x5140 [ 83.572598] ? futex_lock_pi_atomic+0x2a0/0x2a0 [ 83.577256] ? rb_erase_cached+0xc6a/0x32a0 [ 83.581571] ? rb_next+0x140/0x140 [ 83.585118] ? print_usage_bug+0xc0/0xc0 [ 83.589167] ? lock_downgrade+0x8e0/0x8e0 [ 83.593303] ? __lock_acquire+0x7f5/0x5140 [ 83.597521] ? __lock_acquire+0x7f5/0x5140 [ 83.601739] ? graph_lock+0x170/0x170 [ 83.605541] ? __lock_acquire+0x7f5/0x5140 [ 83.609767] ? debug_check_no_locks_freed+0x310/0x310 [ 83.615202] ? check_noncircular+0x20/0x20 [ 83.619424] ? print_usage_bug+0xc0/0xc0 [ 83.623474] ? __update_load_avg_blocked_se.isra.33+0x460/0x460 [ 83.629610] ? print_usage_bug+0xc0/0xc0 [ 83.633680] ? update_load_avg+0x2d9/0x2570 [ 83.637988] ? print_usage_bug+0xc0/0xc0 [ 83.642034] ? print_usage_bug+0xc0/0xc0 [ 83.646081] ? __lock_acquire+0x7f5/0x5140 [ 83.650303] ? graph_lock+0x170/0x170 [ 83.654103] ? print_usage_bug+0xc0/0xc0 [ 83.658153] ? graph_lock+0x170/0x170 [ 83.661961] ? graph_lock+0x170/0x170 [ 83.665747] ? __lock_acquire+0x7f5/0x5140 [ 83.669966] ? debug_check_no_locks_freed+0x310/0x310 [ 83.675140] ? graph_lock+0x170/0x170 [ 83.678938] ? find_held_lock+0x36/0x1c0 [ 83.682982] ? print_usage_bug+0xc0/0xc0 [ 83.687139] ? __update_load_avg_blocked_se.isra.33+0x460/0x460 [ 83.693184] ? print_usage_bug+0xc0/0xc0 [ 83.697244] ? print_usage_bug+0xc0/0xc0 [ 83.701286] ? print_usage_bug+0xc0/0xc0 [ 83.705356] ? update_load_avg+0x2d9/0x2570 [ 83.709663] ? update_load_avg+0x2d9/0x2570 [ 83.713981] futex_wake+0x15c/0x890 [ 83.717596] ? get_futex_key+0x1d10/0x1d10 [ 83.721829] ? __lock_acquire+0x7f5/0x5140 [ 83.726053] ? __lock_acquire+0x7f5/0x5140 [ 83.730292] do_futex+0x890/0x2620 [ 83.733821] ? debug_check_no_locks_freed+0x310/0x310 [ 83.738996] ? __lock_acquire+0x7f5/0x5140 [ 83.743216] ? exit_robust_list+0x1b0/0x1b0 [ 83.747522] ? debug_check_no_locks_freed+0x310/0x310 [ 83.752697] ? graph_lock+0x170/0x170 [ 83.756493] ? debug_check_no_locks_freed+0x310/0x310 [ 83.762017] ? graph_lock+0x170/0x170 [ 83.765890] ? task_numa_work+0xef0/0xef0 [ 83.770026] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 83.775201] ? graph_lock+0x170/0x170 [ 83.778989] ? find_held_lock+0x36/0x1c0 [ 83.783057] ? graph_lock+0x170/0x170 [ 83.786844] ? find_held_lock+0x36/0x1c0 [ 83.790891] ? find_held_lock+0x36/0x1c0 [ 83.794941] ? find_held_lock+0x36/0x1c0 [ 83.798993] ? lock_downgrade+0x8e0/0x8e0 [ 83.803126] ? lock_release+0xa10/0xa10 [ 83.807102] ? check_same_owner+0x320/0x320 [ 83.811592] ? __might_sleep+0x95/0x190 [ 83.815556] ? native_load_gs_index+0x2d/0x30 [ 83.820040] ? __might_sleep+0x95/0x190 [ 83.824002] mm_release+0x3ec/0x540 [ 83.827615] ? mm_access+0x120/0x120 [ 83.831315] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 83.836317] ? trace_hardirqs_on+0xd/0x10 [ 83.840451] ? _raw_spin_unlock_irq+0x27/0x70 [ 83.844939] ? acct_collect+0x64f/0x7c0 [ 83.848896] ? trace_hardirqs_on+0xd/0x10 [ 83.853043] do_exit+0x4b5/0x22f0 [ 83.856481] ? lock_downgrade+0x8e0/0x8e0 [ 83.860612] ? finish_task_switch+0x182/0x810 [ 83.865191] ? mm_update_next_owner+0xbd0/0xbd0 [ 83.869843] ? print_usage_bug+0xc0/0xc0 [ 83.873905] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 83.878383] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 83.882953] ? compat_start_thread+0x80/0x80 [ 83.887347] ? _raw_spin_unlock_irq+0x27/0x70 [ 83.891829] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 83.896921] ? trace_hardirqs_on+0xd/0x10 [ 83.901055] ? _raw_spin_unlock_irq+0x27/0x70 [ 83.905558] ? finish_task_switch+0x1ca/0x810 [ 83.910036] ? finish_task_switch+0x182/0x810 [ 83.914524] ? __lock_acquire+0x7f5/0x5140 [ 83.918769] ? lock_repin_lock+0x410/0x410 [ 83.923026] ? debug_check_no_locks_freed+0x310/0x310 [ 83.928214] ? pci_mmcfg_check_reserved+0x120/0x120 [ 83.933220] ? graph_lock+0x170/0x170 [ 83.937003] ? graph_lock+0x170/0x170 [ 83.940803] ? graph_lock+0x170/0x170 [ 83.944592] ? __mutex_lock+0x95d/0x17f0 [ 83.948658] ? graph_lock+0x170/0x170 [ 83.952475] ? find_held_lock+0x36/0x1c0 [ 83.956526] ? graph_lock+0x170/0x170 [ 83.960334] ? memset+0x31/0x40 [ 83.963601] ? find_held_lock+0x36/0x1c0 [ 83.967650] ? recalc_sigpending+0x6a/0x150 [ 83.971973] ? lock_downgrade+0x8e0/0x8e0 [ 83.976107] ? do_signal_stop+0x37a/0x8e0 [ 83.980246] do_group_exit+0x135/0x3b0 [ 83.984127] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 83.988956] ? __ia32_sys_exit+0x50/0x50 [ 83.993002] ? _raw_spin_unlock_irq+0x27/0x70 [ 83.997747] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 84.002752] get_signal+0x6a9/0x1480 [ 84.006456] ? ptrace_notify+0x110/0x110 [ 84.010688] ? kasan_check_write+0x14/0x20 [ 84.014906] ? ldsem_up_read+0x27/0x50 [ 84.018778] ? tty_ldisc_deref+0x30/0x40 [ 84.022825] ? kasan_check_read+0x11/0x20 [ 84.026959] ? rcu_is_watching+0x85/0x140 [ 84.031090] ? rcu_pm_notify+0xc0/0xc0 [ 84.034971] do_signal+0x98/0x2040 [ 84.038505] ? vfs_writev+0x1e9/0x320 [ 84.042294] ? setup_sigcontext+0x7d0/0x7d0 [ 84.046601] ? wait_for_completion+0x870/0x870 [ 84.051185] ? exit_to_usermode_loop+0x8a/0x2a0 [ 84.055845] exit_to_usermode_loop+0x1bf/0x2a0 [ 84.060419] ? vfs_writev+0x320/0x320 [ 84.064205] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 84.069038] do_syscall_64+0x573/0x6e0 [ 84.072933] ? finish_task_switch+0x1ca/0x810 [ 84.077445] ? syscall_return_slowpath+0x4c0/0x4c0 [ 84.083410] ? syscall_return_slowpath+0x20c/0x4c0 [ 84.088333] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 84.093683] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 84.098521] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 84.103695] RIP: 0033:0x455b59 [ 84.106878] RSP: 002b:00007f6347782c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 84.115179] RAX: fffffffffffffe00 RBX: 00007f63477836d4 RCX: 0000000000455b59 [ 84.122653] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 84.129934] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 84.137303] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 84.144582] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 84.151881] CPU: 0 PID: 5887 Comm: syz-executor5 Not tainted 4.17.0-rc3-syzkaller #0 [ 84.153571] FAULT_INJECTION: forcing a failure. [ 84.153571] name fail_futex, interval 1, probability 0, space 0, times 0 [ 84.159769] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 84.159773] Call Trace: [ 84.159787] dump_stack+0x162/0x21a [ 84.159795] ? dump_stack_print_info.cold.2+0x48/0x48 [ 84.159807] should_fail.cold.4+0x5/0xd [ 84.159815] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 84.200896] ? __lock_acquire+0x7f5/0x5140 [ 84.205130] ? print_usage_bug+0xc0/0xc0 [ 84.209178] ? rb_erase_cached+0xc6a/0x32a0 [ 84.213505] ? __lock_acquire+0x7f5/0x5140 [ 84.217740] ? rb_next+0x140/0x140 [ 84.221269] ? __lock_acquire+0x7f5/0x5140 [ 84.225503] ? check_noncircular+0x20/0x20 [ 84.229811] ? __lock_acquire+0x7f5/0x5140 [ 84.234037] get_futex_key+0x2c3/0x1d10 [ 84.237995] ? graph_lock+0x170/0x170 [ 84.241787] ? __lock_acquire+0x7f5/0x5140 [ 84.246114] ? __lock_acquire+0x7f5/0x5140 [ 84.250365] ? futex_lock_pi_atomic+0x2a0/0x2a0 [ 84.255025] ? rb_erase_cached+0xc6a/0x32a0 [ 84.259353] ? debug_check_no_locks_freed+0x310/0x310 [ 84.264529] ? graph_lock+0x170/0x170 [ 84.268313] ? print_usage_bug+0xc0/0xc0 [ 84.272356] ? lock_downgrade+0x8e0/0x8e0 [ 84.276493] ? graph_lock+0x170/0x170 [ 84.280283] ? find_held_lock+0x36/0x1c0 [ 84.284354] ? check_noncircular+0x20/0x20 [ 84.288592] ? graph_lock+0x170/0x170 [ 84.292377] ? lock_downgrade+0x8e0/0x8e0 [ 84.296513] ? find_held_lock+0x36/0x1c0 [ 84.300568] ? lock_downgrade+0x8e0/0x8e0 [ 84.305054] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 84.309580] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 84.314368] ? kasan_check_write+0x14/0x20 [ 84.318595] ? __free_pages_ok+0x1b70/0x2bd0 [ 84.323019] ? print_usage_bug+0xc0/0xc0 [ 84.327620] ? trace_hardirqs_on+0xd/0x10 [ 84.332975] ? print_usage_bug+0xc0/0xc0 [ 84.337021] ? print_usage_bug+0xc0/0xc0 [ 84.341076] ? print_usage_bug+0xc0/0xc0 [ 84.345125] ? update_load_avg+0x2d9/0x2570 [ 84.349466] futex_wake+0x15c/0x890 [ 84.353087] ? get_futex_key+0x1d10/0x1d10 [ 84.357306] ? __lock_acquire+0x7f5/0x5140 [ 84.361531] ? __lock_acquire+0x7f5/0x5140 [ 84.365770] do_futex+0x890/0x2620 [ 84.369299] ? debug_check_no_locks_freed+0x310/0x310 [ 84.374585] ? __lock_acquire+0x7f5/0x5140 [ 84.378806] ? exit_robust_list+0x1b0/0x1b0 [ 84.383115] ? debug_check_no_locks_freed+0x310/0x310 [ 84.388289] ? graph_lock+0x170/0x170 [ 84.392086] ? debug_check_no_locks_freed+0x310/0x310 [ 84.397260] ? graph_lock+0x170/0x170 [ 84.401085] ? __lock_acquire+0x7f5/0x5140 [ 84.405317] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 84.410500] ? graph_lock+0x170/0x170 [ 84.414291] ? find_held_lock+0x36/0x1c0 [ 84.418341] ? graph_lock+0x170/0x170 [ 84.422128] ? find_held_lock+0x36/0x1c0 [ 84.426177] ? find_held_lock+0x36/0x1c0 [ 84.430230] ? find_held_lock+0x36/0x1c0 [ 84.434316] ? lock_downgrade+0x8e0/0x8e0 [ 84.438454] ? lock_release+0xa10/0xa10 [ 84.442413] ? check_same_owner+0x320/0x320 [ 84.446724] ? __might_sleep+0x95/0x190 [ 84.450690] ? native_load_gs_index+0x2d/0x30 [ 84.455175] ? __might_sleep+0x95/0x190 [ 84.459157] mm_release+0x3ec/0x540 [ 84.462772] ? mm_access+0x120/0x120 [ 84.466477] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 84.471477] ? trace_hardirqs_on+0xd/0x10 [ 84.475637] ? _raw_spin_unlock_irq+0x27/0x70 [ 84.480131] ? acct_collect+0x64f/0x7c0 [ 84.484118] ? trace_hardirqs_on+0xd/0x10 [ 84.488260] do_exit+0x4b5/0x22f0 [ 84.491725] ? mm_update_next_owner+0xbd0/0xbd0 [ 84.496383] ? print_usage_bug+0xc0/0xc0 [ 84.500434] ? free_unref_page+0x9d0/0x9d0 [ 84.504656] ? trace_hardirqs_on+0xd/0x10 [ 84.508793] ? kasan_check_write+0x14/0x20 [ 84.513023] ? finish_task_switch+0x59e/0x810 [ 84.517506] ? __lock_acquire+0x7f5/0x5140 [ 84.521729] ? lock_repin_lock+0x410/0x410 [ 84.525956] ? debug_check_no_locks_freed+0x310/0x310 [ 84.531138] ? pci_mmcfg_check_reserved+0x120/0x120 [ 84.536156] ? graph_lock+0x170/0x170 [ 84.539938] ? graph_lock+0x170/0x170 [ 84.543723] ? graph_lock+0x170/0x170 [ 84.547507] ? __mutex_lock+0x95d/0x17f0 [ 84.551554] ? graph_lock+0x170/0x170 [ 84.555344] ? find_held_lock+0x36/0x1c0 [ 84.559399] ? graph_lock+0x170/0x170 [ 84.563196] ? memset+0x31/0x40 [ 84.566460] ? find_held_lock+0x36/0x1c0 [ 84.570507] ? recalc_sigpending+0x6a/0x150 [ 84.574816] ? lock_downgrade+0x8e0/0x8e0 [ 84.578950] ? do_signal_stop+0x37a/0x8e0 [ 84.583089] do_group_exit+0x135/0x3b0 [ 84.586974] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 84.593016] ? __ia32_sys_exit+0x50/0x50 [ 84.597078] ? _raw_spin_unlock_irq+0x27/0x70 [ 84.601573] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 84.606578] get_signal+0x6a9/0x1480 [ 84.610296] ? ptrace_notify+0x110/0x110 [ 84.614356] ? kasan_check_write+0x14/0x20 [ 84.618579] ? ldsem_up_read+0x27/0x50 [ 84.622464] ? tty_ldisc_deref+0x30/0x40 [ 84.626512] ? kasan_check_read+0x11/0x20 [ 84.630676] ? rcu_is_watching+0x85/0x140 [ 84.635115] ? rcu_pm_notify+0xc0/0xc0 [ 84.638997] do_signal+0x98/0x2040 [ 84.642552] ? vfs_writev+0x1e9/0x320 [ 84.646342] ? setup_sigcontext+0x7d0/0x7d0 [ 84.650646] ? wait_for_completion+0x870/0x870 [ 84.655230] ? exit_to_usermode_loop+0x8a/0x2a0 [ 84.659908] exit_to_usermode_loop+0x1bf/0x2a0 [ 84.664499] ? vfs_writev+0x320/0x320 [ 84.668291] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 84.673151] do_syscall_64+0x573/0x6e0 [ 84.677029] ? syscall_return_slowpath+0x4c0/0x4c0 [ 84.681943] ? syscall_return_slowpath+0x20c/0x4c0 [ 84.686873] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 84.692226] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 84.697064] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 84.702241] RIP: 0033:0x455b59 [ 84.705418] RSP: 002b:00007f7244173c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 84.713221] RAX: fffffffffffffe00 RBX: 00007f72441746d4 RCX: 0000000000455b59 [ 84.720502] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 84.727759] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 84.735013] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 84.742373] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 84.749992] CPU: 1 PID: 5889 Comm: syz-executor2 Not tainted 4.17.0-rc3-syzkaller #0 [ 84.750538] FAULT_INJECTION: forcing a failure. [ 84.750538] name fail_futex, interval 1, probability 0, space 0, times 0 [ 84.757882] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 84.757886] Call Trace: [ 84.757899] dump_stack+0x162/0x21a [ 84.757906] ? dump_stack_print_info.cold.2+0x48/0x48 [ 84.757918] should_fail.cold.4+0x5/0xd [ 84.757926] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 84.801545] ? __lock_acquire+0x7f5/0x5140 [ 84.805782] ? print_usage_bug+0xc0/0xc0 [ 84.809827] ? debug_check_no_locks_freed+0x310/0x310 [ 84.815101] ? __lock_acquire+0x7f5/0x5140 [ 84.819318] ? print_usage_bug+0xc0/0xc0 [ 84.823364] ? __lock_acquire+0x7f5/0x5140 [ 84.827678] ? check_noncircular+0x20/0x20 [ 84.831906] ? __lock_acquire+0x7f5/0x5140 [ 84.836128] get_futex_key+0x2c3/0x1d10 [ 84.840104] ? graph_lock+0x170/0x170 [ 84.843892] ? __lock_acquire+0x7f5/0x5140 [ 84.848139] ? __lock_acquire+0x7f5/0x5140 [ 84.852357] ? futex_lock_pi_atomic+0x2a0/0x2a0 [ 84.857029] ? rb_erase_cached+0xc6a/0x32a0 [ 84.861340] ? debug_check_no_locks_freed+0x310/0x310 [ 84.866524] ? graph_lock+0x170/0x170 [ 84.870311] ? print_usage_bug+0xc0/0xc0 [ 84.874457] ? lock_downgrade+0x8e0/0x8e0 [ 84.878592] ? graph_lock+0x170/0x170 [ 84.882381] ? find_held_lock+0x36/0x1c0 [ 84.886435] ? check_noncircular+0x20/0x20 [ 84.890653] ? graph_lock+0x170/0x170 [ 84.894439] ? lock_downgrade+0x8e0/0x8e0 [ 84.898576] ? find_held_lock+0x36/0x1c0 [ 84.902656] ? lock_downgrade+0x8e0/0x8e0 [ 84.906794] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 84.911272] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 84.915840] ? kasan_check_write+0x14/0x20 [ 84.920059] ? __free_pages_ok+0x1b70/0x2bd0 [ 84.924454] ? print_usage_bug+0xc0/0xc0 [ 84.928498] ? trace_hardirqs_on+0xd/0x10 [ 84.932630] ? print_usage_bug+0xc0/0xc0 [ 84.936675] ? print_usage_bug+0xc0/0xc0 [ 84.940722] ? print_usage_bug+0xc0/0xc0 [ 84.944772] futex_wake+0x15c/0x890 [ 84.948386] ? get_futex_key+0x1d10/0x1d10 [ 84.952610] ? __lock_acquire+0x7f5/0x5140 [ 84.956829] ? __lock_acquire+0x7f5/0x5140 [ 84.961055] do_futex+0x890/0x2620 [ 84.964582] ? debug_check_no_locks_freed+0x310/0x310 [ 84.970474] ? __lock_acquire+0x7f5/0x5140 [ 84.974739] ? exit_robust_list+0x1b0/0x1b0 [ 84.979052] ? debug_check_no_locks_freed+0x310/0x310 [ 84.984231] ? graph_lock+0x170/0x170 [ 84.988016] ? debug_check_no_locks_freed+0x310/0x310 [ 84.993207] ? graph_lock+0x170/0x170 [ 84.996995] ? __lock_acquire+0x7f5/0x5140 [ 85.001215] ? graph_lock+0x170/0x170 [ 85.005019] ? find_held_lock+0x36/0x1c0 [ 85.009084] ? graph_lock+0x170/0x170 [ 85.012887] ? find_held_lock+0x36/0x1c0 [ 85.016943] ? find_held_lock+0x36/0x1c0 [ 85.021012] ? find_held_lock+0x36/0x1c0 [ 85.025070] ? lock_downgrade+0x8e0/0x8e0 [ 85.029214] ? lock_release+0xa10/0xa10 [ 85.033172] ? check_same_owner+0x320/0x320 [ 85.037477] ? __might_sleep+0x95/0x190 [ 85.041437] ? native_load_gs_index+0x2d/0x30 [ 85.045940] ? __might_sleep+0x95/0x190 [ 85.049916] mm_release+0x3ec/0x540 [ 85.053541] ? mm_access+0x120/0x120 [ 85.057423] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 85.062627] ? trace_hardirqs_on+0xd/0x10 [ 85.066787] ? _raw_spin_unlock_irq+0x27/0x70 [ 85.071266] ? acct_collect+0x64f/0x7c0 [ 85.075223] ? trace_hardirqs_on+0xd/0x10 [ 85.079360] do_exit+0x4b5/0x22f0 [ 85.082804] ? mm_update_next_owner+0xbd0/0xbd0 [ 85.087455] ? print_usage_bug+0xc0/0xc0 [ 85.091589] ? free_unref_page+0x9d0/0x9d0 [ 85.096335] ? trace_hardirqs_on+0xd/0x10 [ 85.100474] ? kasan_check_write+0x14/0x20 [ 85.104718] ? finish_task_switch+0x59e/0x810 [ 85.109199] ? __lock_acquire+0x7f5/0x5140 [ 85.113451] ? lock_repin_lock+0x410/0x410 [ 85.117675] ? debug_check_no_locks_freed+0x310/0x310 [ 85.122854] ? pci_mmcfg_check_reserved+0x120/0x120 [ 85.128121] ? graph_lock+0x170/0x170 [ 85.131909] ? graph_lock+0x170/0x170 [ 85.135697] ? graph_lock+0x170/0x170 [ 85.139484] ? __mutex_lock+0x95d/0x17f0 [ 85.143559] ? graph_lock+0x170/0x170 [ 85.147349] ? find_held_lock+0x36/0x1c0 [ 85.151486] ? graph_lock+0x170/0x170 [ 85.155304] ? memset+0x31/0x40 [ 85.158577] ? find_held_lock+0x36/0x1c0 [ 85.162713] ? recalc_sigpending+0x6a/0x150 [ 85.167022] ? lock_downgrade+0x8e0/0x8e0 [ 85.171159] ? do_signal_stop+0x37a/0x8e0 [ 85.175298] do_group_exit+0x135/0x3b0 [ 85.179173] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 85.183742] ? __ia32_sys_exit+0x50/0x50 [ 85.187806] ? _raw_spin_unlock_irq+0x27/0x70 [ 85.192290] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 85.197320] get_signal+0x6a9/0x1480 [ 85.201051] ? ptrace_notify+0x110/0x110 [ 85.205120] ? kasan_check_write+0x14/0x20 [ 85.209350] ? ldsem_up_read+0x27/0x50 [ 85.213244] ? tty_ldisc_deref+0x30/0x40 [ 85.217298] ? kasan_check_read+0x11/0x20 [ 85.221434] ? rcu_is_watching+0x85/0x140 [ 85.225766] ? rcu_pm_notify+0xc0/0xc0 [ 85.229677] do_signal+0x98/0x2040 [ 85.233211] ? vfs_writev+0x1e9/0x320 [ 85.237003] ? setup_sigcontext+0x7d0/0x7d0 [ 85.241405] ? wait_for_completion+0x870/0x870 [ 85.256026] ? exit_to_usermode_loop+0x8a/0x2a0 [ 85.260687] exit_to_usermode_loop+0x1bf/0x2a0 [ 85.265259] ? vfs_writev+0x320/0x320 [ 85.269053] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 85.273887] do_syscall_64+0x573/0x6e0 [ 85.277763] ? syscall_return_slowpath+0x4c0/0x4c0 [ 85.282677] ? syscall_return_slowpath+0x20c/0x4c0 [ 85.287598] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 85.293010] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 85.298125] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 85.303317] RIP: 0033:0x455b59 [ 85.306502] RSP: 002b:00007f15bba38c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 85.314214] RAX: fffffffffffffe00 RBX: 00007f15bba396d4 RCX: 0000000000455b59 [ 85.321496] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 85.329217] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 85.336583] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 85.343842] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 85.351118] CPU: 0 PID: 5896 Comm: syz-executor3 Not tainted 4.17.0-rc3-syzkaller #0 [ 85.359025] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 85.369689] Call Trace: [ 85.372291] dump_stack+0x162/0x21a [ 85.375931] ? dump_stack_print_info.cold.2+0x48/0x48 [ 85.381146] should_fail.cold.4+0x5/0xd [ 85.385141] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 85.390268] ? __lock_acquire+0x7f5/0x5140 [ 85.394509] ? rb_erase_cached+0xc6a/0x32a0 [ 85.398858] ? rb_next+0x140/0x140 [ 85.402397] ? __lock_acquire+0x7f5/0x5140 [ 85.406642] ? check_noncircular+0x20/0x20 [ 85.410879] ? __lock_acquire+0x7f5/0x5140 [ 85.415215] get_futex_key+0x2c3/0x1d10 [ 85.419225] ? graph_lock+0x170/0x170 [ 85.423033] ? __lock_acquire+0x7f5/0x5140 [ 85.427362] ? futex_lock_pi_atomic+0x2a0/0x2a0 [ 85.432031] ? print_usage_bug+0xc0/0xc0 [ 85.441598] ? print_usage_bug+0xc0/0xc0 [ 85.445669] ? print_usage_bug+0xc0/0xc0 [ 85.449760] ? print_usage_bug+0xc0/0xc0 [ 85.453835] ? lock_downgrade+0x8e0/0x8e0 [ 85.457992] ? __lock_acquire+0x7f5/0x5140 [ 85.462242] ? __lock_acquire+0x7f5/0x5140 [ 85.466491] ? graph_lock+0x170/0x170 [ 85.470647] ? graph_lock+0x170/0x170 [ 85.474457] ? __lock_acquire+0x7f5/0x5140 [ 85.478730] ? debug_check_no_locks_freed+0x310/0x310 [ 85.483950] ? check_noncircular+0x20/0x20 [ 85.488195] ? __update_load_avg_blocked_se.isra.33+0x460/0x460 [ 85.494524] ? update_load_avg+0x2d9/0x2570 [ 85.498852] ? update_load_avg+0x2d9/0x2570 [ 85.503182] ? print_usage_bug+0xc0/0xc0 [ 85.507247] ? attach_entity_load_avg+0x850/0x850 [ 85.512096] ? attach_entity_load_avg+0x850/0x850 [ 85.517035] ? graph_lock+0x170/0x170 [ 85.523534] ? print_usage_bug+0xc0/0xc0 [ 85.527608] ? __lock_acquire+0x7f5/0x5140 [ 85.531850] ? print_usage_bug+0xc0/0xc0 [ 85.535921] ? graph_lock+0x170/0x170 [ 85.539738] ? find_held_lock+0x36/0x1c0 [ 85.543809] ? print_usage_bug+0xc0/0xc0 [ 85.547884] ? print_usage_bug+0xc0/0xc0 [ 85.551953] ? print_usage_bug+0xc0/0xc0 [ 85.556120] ? print_usage_bug+0xc0/0xc0 [ 85.560488] futex_wake+0x15c/0x890 [ 85.564167] ? get_futex_key+0x1d10/0x1d10 [ 85.568403] ? __lock_acquire+0x7f5/0x5140 [ 85.572648] ? __lock_acquire+0x7f5/0x5140 [ 85.578377] do_futex+0x890/0x2620 [ 85.581922] ? debug_check_no_locks_freed+0x310/0x310 [ 85.587209] ? __lock_acquire+0x7f5/0x5140 [ 85.591455] ? exit_robust_list+0x1b0/0x1b0 [ 85.595784] ? debug_check_no_locks_freed+0x310/0x310 [ 85.600981] ? graph_lock+0x170/0x170 [ 85.604793] ? debug_check_no_locks_freed+0x310/0x310 [ 85.609996] ? print_usage_bug+0xc0/0xc0 [ 85.614064] ? graph_lock+0x170/0x170 [ 85.617864] ? graph_lock+0x170/0x170 [ 85.621663] ? find_held_lock+0x36/0x1c0 [ 85.625719] ? graph_lock+0x170/0x170 [ 85.629688] ? find_held_lock+0x36/0x1c0 [ 85.633745] ? find_held_lock+0x36/0x1c0 [ 85.637812] ? find_held_lock+0x36/0x1c0 [ 85.641885] ? lock_downgrade+0x8e0/0x8e0 [ 85.646041] ? lock_release+0xa10/0xa10 [ 85.650010] ? check_same_owner+0x320/0x320 [ 85.655055] ? __might_sleep+0x95/0x190 [ 85.659045] ? native_load_gs_index+0x2d/0x30 [ 85.663542] ? __might_sleep+0x95/0x190 [ 85.667515] mm_release+0x3ec/0x540 [ 85.671139] ? mm_access+0x120/0x120 [ 85.674854] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 85.679890] ? trace_hardirqs_on+0xd/0x10 [ 85.684049] ? _raw_spin_unlock_irq+0x27/0x70 [ 85.688540] ? acct_collect+0x64f/0x7c0 [ 85.692505] ? trace_hardirqs_on+0xd/0x10 [ 85.696652] do_exit+0x4b5/0x22f0 [ 85.700101] ? find_held_lock+0x36/0x1c0 [ 85.704160] ? mm_update_next_owner+0xbd0/0xbd0 [ 85.708821] ? print_usage_bug+0xc0/0xc0 [ 85.713136] ? graph_lock+0x170/0x170 [ 85.716930] ? graph_lock+0x170/0x170 [ 85.720730] ? kasan_check_read+0x11/0x20 [ 85.724869] ? rcu_is_watching+0x85/0x140 [ 85.729016] ? __lock_acquire+0x7f5/0x5140 [ 85.733256] ? debug_check_no_locks_freed+0x310/0x310 [ 85.738448] ? memset+0x31/0x40 [ 85.741722] ? debug_mutex_free_waiter+0xfe/0x1b0 [ 85.746560] ? debug_mutex_wake_waiter+0x620/0x620 [ 85.751480] ? kasan_check_write+0x14/0x20 [ 85.755707] ? do_raw_spin_lock+0xc1/0x200 [ 85.759945] ? __mutex_lock+0x787/0x17f0 [ 85.764019] ? tty_write_lock+0x2c/0x50 [ 85.767999] ? mutex_trylock+0x2a0/0x2a0 [ 85.772062] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 85.777252] ? graph_lock+0x170/0x170 [ 85.781049] ? lock_acquire+0x1dc/0x520 [ 85.785017] ? ldsem_down_read+0x32/0x40 [ 85.789078] ? memset+0x31/0x40 [ 85.792389] ? find_held_lock+0x36/0x1c0 [ 85.796460] ? recalc_sigpending+0x6a/0x150 [ 85.800788] ? lock_downgrade+0x8e0/0x8e0 [ 85.805724] do_group_exit+0x135/0x3b0 [ 85.809611] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 85.814189] ? __ia32_sys_exit+0x50/0x50 [ 85.818244] ? _raw_spin_unlock_irq+0x27/0x70 [ 85.822832] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 85.827903] get_signal+0x6a9/0x1480 [ 85.831615] ? ptrace_notify+0x110/0x110 [ 85.835734] ? kasan_check_write+0x14/0x20 [ 85.840008] ? ldsem_up_read+0x27/0x50 [ 85.844169] ? tty_ldisc_deref+0x30/0x40 [ 85.848225] ? kasan_check_read+0x11/0x20 [ 85.852369] ? rcu_is_watching+0x85/0x140 [ 85.856508] ? rw_verify_area+0xb8/0x2b0 [ 85.860594] ? rcu_pm_notify+0xc0/0xc0 [ 85.864491] do_signal+0x98/0x2040 [ 85.868548] ? vfs_writev+0x1e9/0x320 [ 85.872349] ? setup_sigcontext+0x7d0/0x7d0 [ 85.876734] ? wait_for_completion+0x870/0x870 [ 85.881316] ? exit_to_usermode_loop+0x8a/0x2a0 [ 85.887372] exit_to_usermode_loop+0x1bf/0x2a0 [ 85.891950] ? vfs_writev+0x320/0x320 [ 85.895895] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 85.900730] do_syscall_64+0x573/0x6e0 [ 85.904699] ? finish_task_switch+0x1ca/0x810 [ 85.909190] ? syscall_return_slowpath+0x4c0/0x4c0 [ 85.914151] ? syscall_return_slowpath+0x20c/0x4c0 [ 85.919076] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 85.924530] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 85.929465] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 85.934643] RIP: 0033:0x455b59 [ 85.937822] RSP: 002b:00007efee9daec68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 85.945539] RAX: fffffffffffffe00 RBX: 00007efee9daf6d4 RCX: 0000000000455b59 [ 85.952891] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 85.960236] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 85.967512] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 2019/11/25 02:23:37 executed programs: 43 [ 85.974776] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 86.384960] FAULT_INJECTION: forcing a failure. [ 86.384960] name failslab, interval 1, probability 0, space 0, times 0 [ 86.396500] CPU: 1 PID: 5916 Comm: syz-executor1 Not tainted 4.17.0-rc3-syzkaller #0 [ 86.405149] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 86.414601] Call Trace: [ 86.417182] dump_stack+0x162/0x21a [ 86.420905] ? dump_stack_print_info.cold.2+0x48/0x48 [ 86.426095] should_fail.cold.4+0x5/0xd [ 86.430066] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 86.435165] ? graph_lock+0x170/0x170 [ 86.438971] ? debug_check_no_locks_freed+0x310/0x310 [ 86.444303] ? debug_check_no_locks_freed+0x310/0x310 [ 86.449499] ? task_numa_work+0xef0/0xef0 [ 86.453653] ? find_held_lock+0x36/0x1c0 [ 86.458084] ? check_same_owner+0x320/0x320 [ 86.462438] ? rcu_note_context_switch+0x710/0x710 [ 86.464909] FAULT_INJECTION: forcing a failure. [ 86.464909] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 86.467375] __should_failslab+0xba/0xf0 [ 86.467384] should_failslab+0x9/0x14 [ 86.467389] kmem_cache_alloc+0x2af/0x760 [ 86.467398] ? find_held_lock+0x36/0x1c0 [ 86.467407] taskstats_exit+0x6fd/0x1040 [ 86.467416] ? taskstats_user_cmd+0x11d0/0x11d0 [ 86.467428] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 86.467433] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 86.467443] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 86.467448] ? trace_hardirqs_on+0xd/0x10 [ 86.467455] ? _raw_spin_unlock_irq+0x27/0x70 [ 86.467461] ? acct_collect+0x64f/0x7c0 [ 86.467466] ? trace_hardirqs_on+0xd/0x10 [ 86.467475] do_exit+0x47a/0x22f0 [ 86.467483] ? lock_downgrade+0x8e0/0x8e0 [ 86.544555] ? finish_task_switch+0x182/0x810 [ 86.549056] ? mm_update_next_owner+0xbd0/0xbd0 [ 86.553724] ? print_usage_bug+0xc0/0xc0 [ 86.557768] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 86.562337] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 86.566905] ? compat_start_thread+0x80/0x80 [ 86.571300] ? _raw_spin_unlock_irq+0x27/0x70 [ 86.575780] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 86.580782] ? trace_hardirqs_on+0xd/0x10 [ 86.584913] ? _raw_spin_unlock_irq+0x27/0x70 [ 86.589404] ? finish_task_switch+0x1ca/0x810 [ 86.593886] ? finish_task_switch+0x182/0x810 [ 86.598372] ? __lock_acquire+0x7f5/0x5140 [ 86.602682] ? lock_repin_lock+0x410/0x410 [ 86.606911] ? debug_check_no_locks_freed+0x310/0x310 [ 86.612092] ? pci_mmcfg_check_reserved+0x120/0x120 [ 86.617179] ? graph_lock+0x170/0x170 [ 86.620975] ? graph_lock+0x170/0x170 [ 86.624766] ? graph_lock+0x170/0x170 [ 86.628553] ? __mutex_lock+0x95d/0x17f0 [ 86.632602] ? graph_lock+0x170/0x170 [ 86.636391] ? find_held_lock+0x36/0x1c0 [ 86.640457] ? graph_lock+0x170/0x170 [ 86.644254] ? memset+0x31/0x40 [ 86.647522] ? find_held_lock+0x36/0x1c0 [ 86.651591] ? recalc_sigpending+0x6a/0x150 [ 86.655900] ? lock_downgrade+0x8e0/0x8e0 [ 86.660037] ? do_signal_stop+0x37a/0x8e0 [ 86.664177] do_group_exit+0x135/0x3b0 [ 86.668069] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 86.672639] ? __ia32_sys_exit+0x50/0x50 [ 86.676882] ? _raw_spin_unlock_irq+0x27/0x70 [ 86.681380] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 86.686385] get_signal+0x6a9/0x1480 [ 86.690089] ? ptrace_notify+0x110/0x110 [ 86.694155] ? kasan_check_write+0x14/0x20 [ 86.698375] ? ldsem_up_read+0x27/0x50 [ 86.702276] ? tty_ldisc_deref+0x30/0x40 [ 86.706335] ? kasan_check_read+0x11/0x20 [ 86.710487] ? rcu_is_watching+0x85/0x140 [ 86.714623] ? rcu_pm_notify+0xc0/0xc0 [ 86.718853] do_signal+0x98/0x2040 [ 86.722387] ? vfs_writev+0x1e9/0x320 [ 86.726190] ? setup_sigcontext+0x7d0/0x7d0 [ 86.730502] ? wait_for_completion+0x870/0x870 [ 86.735084] ? exit_to_usermode_loop+0x8a/0x2a0 [ 86.739742] exit_to_usermode_loop+0x1bf/0x2a0 [ 86.744322] ? vfs_writev+0x320/0x320 [ 86.748124] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 86.752958] do_syscall_64+0x573/0x6e0 [ 86.756840] ? syscall_return_slowpath+0x4c0/0x4c0 [ 86.761781] ? syscall_return_slowpath+0x20c/0x4c0 [ 86.766714] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 86.772173] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 86.777010] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 86.782188] RIP: 0033:0x455b59 [ 86.785363] RSP: 002b:00007f4f3cfeec68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 86.793060] RAX: fffffffffffffe00 RBX: 00007f4f3cfef6d4 RCX: 0000000000455b59 [ 86.800317] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 86.807584] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 86.814928] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 86.822186] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 86.829458] CPU: 0 PID: 5923 Comm: syz-executor5 Not tainted 4.17.0-rc3-syzkaller #0 [ 86.831047] FAULT_INJECTION: forcing a failure. [ 86.831047] name fail_futex, interval 1, probability 0, space 0, times 0 [ 86.837454] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 86.837458] Call Trace: [ 86.837472] dump_stack+0x162/0x21a [ 86.837480] ? dump_stack_print_info.cold.2+0x48/0x48 [ 86.837493] should_fail.cold.4+0x5/0xd [ 86.837499] ? graph_lock+0x170/0x170 [ 86.837507] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 86.882986] ? graph_lock+0x170/0x170 [ 86.886773] ? lock_acquire+0x1dc/0x520 [ 86.890735] ? find_held_lock+0x36/0x1c0 [ 86.894785] ? lock_downgrade+0x8e0/0x8e0 [ 86.898925] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 86.904111] ? kasan_check_read+0x11/0x20 [ 86.908246] ? rcu_is_watching+0x85/0x140 [ 86.912379] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 86.917558] ? rcu_read_lock+0x70/0x70 [ 86.921444] __alloc_pages_nodemask+0x34e/0xd70 [ 86.926111] ? page_remove_rmap+0x4eb/0xe00 [ 86.930430] ? __alloc_pages_slowpath+0x2db0/0x2db0 [ 86.936402] ? __lock_acquire+0x7f5/0x5140 [ 86.940626] ? find_held_lock+0x36/0x1c0 [ 86.944673] ? lock_acquire+0x1dc/0x520 [ 86.948635] ? lock_release+0xa10/0xa10 [ 86.952594] ? graph_lock+0x170/0x170 [ 86.956392] alloc_pages_current+0xd6/0x1b0 [ 86.962282] __get_free_pages+0xf/0x40 [ 86.966159] __tlb_remove_page_size+0x26b/0x4d0 [ 86.971000] unmap_page_range+0xc2c/0x1ff0 [ 86.975222] ? __activate_page+0x13b0/0x13b0 [ 86.979800] ? vm_normal_page_pmd+0x330/0x330 [ 86.984293] ? kasan_check_read+0x11/0x20 [ 86.988430] ? kasan_check_read+0x11/0x20 [ 86.992653] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 86.997828] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 87.003008] ? is_bpf_text_address+0x81/0xe0 [ 87.007423] ? kernel_text_address+0x79/0xf0 [ 87.011823] ? unwind_get_return_address+0x61/0xa0 [ 87.016736] ? graph_lock+0x170/0x170 [ 87.020522] ? __save_stack_trace+0x7e/0xd0 [ 87.024838] ? find_held_lock+0x36/0x1c0 [ 87.028913] ? lock_downgrade+0x8e0/0x8e0 [ 87.033135] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 87.037639] ? uprobe_mmap+0xc10/0xc10 [ 87.041537] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 87.046146] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 87.051244] unmap_single_vma+0x121/0x300 [ 87.055403] unmap_vmas+0xe2/0x190 [ 87.058958] exit_mmap+0x209/0x430 [ 87.062494] ? __ia32_sys_munmap+0x70/0x70 [ 87.066739] ? __khugepaged_exit+0x3a8/0x630 [ 87.071165] ? __might_sleep+0x95/0x190 [ 87.075253] mmput+0x1f4/0x550 [ 87.078435] ? lock_downgrade+0x8e0/0x8e0 [ 87.082571] ? set_mm_exe_file+0x1f0/0x1f0 [ 87.086807] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 87.091283] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 87.095851] ? kasan_check_write+0x14/0x20 [ 87.100074] ? do_raw_spin_lock+0xc1/0x200 [ 87.104303] do_exit+0xd0f/0x22f0 [ 87.107759] ? mm_update_next_owner+0xbd0/0xbd0 [ 87.112413] ? print_usage_bug+0xc0/0xc0 [ 87.116476] ? __lock_acquire+0x7f5/0x5140 [ 87.120695] ? print_usage_bug+0xc0/0xc0 [ 87.124746] ? __lock_acquire+0x7f5/0x5140 [ 87.128965] ? debug_check_no_locks_freed+0x310/0x310 [ 87.134146] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 87.138809] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 87.143382] ? graph_lock+0x170/0x170 [ 87.147257] ? graph_lock+0x170/0x170 [ 87.151053] ? graph_lock+0x170/0x170 [ 87.155275] ? _raw_spin_unlock+0x22/0x30 [ 87.159405] ? __mutex_lock+0x95d/0x17f0 [ 87.163463] ? graph_lock+0x170/0x170 [ 87.168204] ? graph_lock+0x170/0x170 [ 87.172003] ? graph_lock+0x170/0x170 [ 87.175793] ? graph_lock+0x170/0x170 [ 87.179590] ? print_usage_bug+0xc0/0xc0 [ 87.183636] ? memset+0x31/0x40 [ 87.186903] ? find_held_lock+0x36/0x1c0 [ 87.191038] ? recalc_sigpending+0x6a/0x150 [ 87.195351] ? lock_downgrade+0x8e0/0x8e0 [ 87.199537] do_group_exit+0x135/0x3b0 [ 87.203429] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 87.208023] ? __ia32_sys_exit+0x50/0x50 [ 87.212089] ? _raw_spin_unlock_irq+0x27/0x70 [ 87.216582] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 87.221589] get_signal+0x6a9/0x1480 [ 87.225293] ? ptrace_notify+0x110/0x110 [ 87.229340] ? kasan_check_write+0x14/0x20 [ 87.233709] ? ldsem_up_read+0x27/0x50 [ 87.237588] ? tty_ldisc_deref+0x30/0x40 [ 87.241901] ? kasan_check_read+0x11/0x20 [ 87.246039] ? rcu_is_watching+0x85/0x140 [ 87.250180] ? rcu_pm_notify+0xc0/0xc0 [ 87.254084] do_signal+0x98/0x2040 [ 87.257648] ? vfs_writev+0x1e9/0x320 [ 87.261441] ? setup_sigcontext+0x7d0/0x7d0 [ 87.265749] ? wait_for_completion+0x870/0x870 [ 87.270339] ? exit_to_usermode_loop+0x8a/0x2a0 [ 87.275007] exit_to_usermode_loop+0x1bf/0x2a0 [ 87.279574] ? vfs_writev+0x320/0x320 [ 87.283364] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 87.288213] do_syscall_64+0x573/0x6e0 [ 87.292091] ? syscall_return_slowpath+0x4c0/0x4c0 [ 87.297014] ? syscall_return_slowpath+0x20c/0x4c0 [ 87.301934] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 87.307286] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 87.312122] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 87.317302] RIP: 0033:0x455b59 [ 87.320635] RSP: 002b:00007f7244173c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 87.328353] RAX: fffffffffffffe00 RBX: 00007f72441746d4 RCX: 0000000000455b59 [ 87.335824] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 87.343380] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 87.350643] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 87.357917] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 87.365196] CPU: 1 PID: 5919 Comm: syz-executor2 Not tainted 4.17.0-rc3-syzkaller #0 [ 87.367499] FAULT_INJECTION: forcing a failure. [ 87.367499] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 87.373082] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 87.373087] Call Trace: [ 87.373102] dump_stack+0x162/0x21a [ 87.373110] ? dump_stack_print_info.cold.2+0x48/0x48 [ 87.373122] should_fail.cold.4+0x5/0xd [ 87.373129] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 87.373139] ? __lock_acquire+0x7f5/0x5140 [ 87.419007] ? debug_check_no_locks_freed+0x310/0x310 [ 87.424197] ? kasan_unpoison_shadow+0x35/0x50 [ 87.428773] ? kasan_alloc_pages+0x38/0x40 [ 87.432994] ? get_page_from_freelist+0x10ff/0x4f00 [ 87.438008] ? check_noncircular+0x20/0x20 [ 87.442246] ? print_usage_bug+0xc0/0xc0 [ 87.446294] get_futex_key+0x2c3/0x1d10 [ 87.450272] ? __isolate_free_page+0x7c0/0x7c0 [ 87.454841] ? __lock_acquire+0x7f5/0x5140 [ 87.459061] ? futex_lock_pi_atomic+0x2a0/0x2a0 [ 87.463718] ? rb_erase_cached+0xc6a/0x32a0 [ 87.468058] ? rb_next+0x140/0x140 [ 87.471608] ? print_usage_bug+0xc0/0xc0 [ 87.475744] ? lock_downgrade+0x8e0/0x8e0 [ 87.479890] ? __lock_acquire+0x7f5/0x5140 [ 87.484137] ? __lock_acquire+0x7f5/0x5140 [ 87.488359] ? graph_lock+0x170/0x170 [ 87.492146] ? __lock_acquire+0x7f5/0x5140 [ 87.496367] ? debug_check_no_locks_freed+0x310/0x310 [ 87.501547] ? check_noncircular+0x20/0x20 [ 87.505769] ? print_usage_bug+0xc0/0xc0 [ 87.509837] ? __update_load_avg_blocked_se.isra.33+0x460/0x460 [ 87.516500] ? print_usage_bug+0xc0/0xc0 [ 87.520551] ? update_load_avg+0x2d9/0x2570 [ 87.524883] ? print_usage_bug+0xc0/0xc0 [ 87.528932] ? print_usage_bug+0xc0/0xc0 [ 87.532980] ? __lock_acquire+0x7f5/0x5140 [ 87.537205] ? graph_lock+0x170/0x170 [ 87.540993] ? print_usage_bug+0xc0/0xc0 [ 87.545157] ? graph_lock+0x170/0x170 [ 87.548944] ? graph_lock+0x170/0x170 [ 87.552735] ? __lock_acquire+0x7f5/0x5140 [ 87.556951] ? debug_check_no_locks_freed+0x310/0x310 [ 87.562129] ? graph_lock+0x170/0x170 [ 87.565916] ? find_held_lock+0x36/0x1c0 [ 87.569982] ? print_usage_bug+0xc0/0xc0 [ 87.574028] ? __update_load_avg_blocked_se.isra.33+0x460/0x460 [ 87.580073] ? print_usage_bug+0xc0/0xc0 [ 87.584120] ? print_usage_bug+0xc0/0xc0 [ 87.588170] ? print_usage_bug+0xc0/0xc0 [ 87.592217] ? update_load_avg+0x2d9/0x2570 [ 87.596525] ? update_load_avg+0x2d9/0x2570 [ 87.600832] futex_wake+0x15c/0x890 [ 87.604450] ? get_futex_key+0x1d10/0x1d10 [ 87.608671] ? __lock_acquire+0x7f5/0x5140 [ 87.612897] ? __lock_acquire+0x7f5/0x5140 [ 87.617250] do_futex+0x890/0x2620 [ 87.620779] ? debug_check_no_locks_freed+0x310/0x310 [ 87.625961] ? __lock_acquire+0x7f5/0x5140 [ 87.630197] ? exit_robust_list+0x1b0/0x1b0 [ 87.634511] ? debug_check_no_locks_freed+0x310/0x310 [ 87.639700] ? graph_lock+0x170/0x170 [ 87.643487] ? debug_check_no_locks_freed+0x310/0x310 [ 87.648855] ? graph_lock+0x170/0x170 [ 87.652649] ? task_numa_work+0xef0/0xef0 [ 87.656790] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 87.662001] ? graph_lock+0x170/0x170 [ 87.665797] ? find_held_lock+0x36/0x1c0 [ 87.669927] ? graph_lock+0x170/0x170 [ 87.673851] ? find_held_lock+0x36/0x1c0 [ 87.677904] ? find_held_lock+0x36/0x1c0 [ 87.682564] ? find_held_lock+0x36/0x1c0 [ 87.686643] ? lock_downgrade+0x8e0/0x8e0 [ 87.690819] ? lock_release+0xa10/0xa10 [ 87.694783] ? check_same_owner+0x320/0x320 [ 87.699108] ? __might_sleep+0x95/0x190 [ 87.703067] ? native_load_gs_index+0x2d/0x30 [ 87.707814] ? __might_sleep+0x95/0x190 [ 87.711801] mm_release+0x3ec/0x540 [ 87.715422] ? mm_access+0x120/0x120 [ 87.719399] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 87.724409] ? trace_hardirqs_on+0xd/0x10 [ 87.728565] ? _raw_spin_unlock_irq+0x27/0x70 [ 87.733053] ? acct_collect+0x64f/0x7c0 [ 87.737014] ? trace_hardirqs_on+0xd/0x10 [ 87.741163] do_exit+0x4b5/0x22f0 [ 87.744629] ? lock_downgrade+0x8e0/0x8e0 [ 87.748769] ? finish_task_switch+0x182/0x810 [ 87.753255] ? mm_update_next_owner+0xbd0/0xbd0 [ 87.757907] ? print_usage_bug+0xc0/0xc0 [ 87.761982] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 87.766480] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 87.771064] ? compat_start_thread+0x80/0x80 [ 87.775467] ? _raw_spin_unlock_irq+0x27/0x70 [ 87.779950] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 87.784975] ? trace_hardirqs_on+0xd/0x10 [ 87.789127] ? _raw_spin_unlock_irq+0x27/0x70 [ 87.793631] ? finish_task_switch+0x1ca/0x810 [ 87.798208] ? finish_task_switch+0x182/0x810 [ 87.802719] ? __lock_acquire+0x7f5/0x5140 [ 87.806947] ? lock_repin_lock+0x410/0x410 [ 87.811173] ? debug_check_no_locks_freed+0x310/0x310 [ 87.816355] ? pci_mmcfg_check_reserved+0x120/0x120 [ 87.821355] ? graph_lock+0x170/0x170 [ 87.825195] ? graph_lock+0x170/0x170 [ 87.829623] ? graph_lock+0x170/0x170 [ 87.833468] ? __mutex_lock+0x95d/0x17f0 [ 87.837535] ? graph_lock+0x170/0x170 [ 87.841334] ? find_held_lock+0x36/0x1c0 [ 87.845405] ? graph_lock+0x170/0x170 [ 87.849341] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 87.854505] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 87.859256] ? memset+0x31/0x40 [ 87.862548] ? find_held_lock+0x36/0x1c0 [ 87.866617] ? recalc_sigpending+0x6a/0x150 [ 87.870934] ? lock_downgrade+0x8e0/0x8e0 [ 87.875087] ? do_signal_stop+0x37a/0x8e0 [ 87.879268] do_group_exit+0x135/0x3b0 [ 87.883148] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 87.887717] ? __ia32_sys_exit+0x50/0x50 [ 87.891911] ? _raw_spin_unlock_irq+0x27/0x70 [ 87.896418] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 87.901460] get_signal+0x6a9/0x1480 [ 87.905212] ? ptrace_notify+0x110/0x110 [ 87.909421] ? retint_kernel+0x10/0x10 [ 87.913318] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 87.918433] ? kasan_check_read+0x11/0x20 [ 87.922582] ? rcu_is_watching+0x85/0x140 [ 87.926718] ? rcu_pm_notify+0xc0/0xc0 [ 87.930705] do_signal+0x98/0x2040 [ 87.934249] ? vfs_writev+0x1e9/0x320 [ 87.938039] ? setup_sigcontext+0x7d0/0x7d0 [ 87.942361] ? wait_for_completion+0x870/0x870 [ 87.946972] ? exit_to_usermode_loop+0x8a/0x2a0 [ 87.951651] exit_to_usermode_loop+0x1bf/0x2a0 [ 87.956262] ? vfs_writev+0x320/0x320 [ 87.960070] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 87.964903] do_syscall_64+0x573/0x6e0 [ 87.968780] ? syscall_return_slowpath+0x4c0/0x4c0 [ 87.973716] ? syscall_return_slowpath+0x20c/0x4c0 [ 87.978645] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 87.984002] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 87.988938] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 87.994113] RIP: 0033:0x455b59 [ 87.997292] RSP: 002b:00007f15bba38c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 88.005097] RAX: fffffffffffffe00 RBX: 00007f15bba396d4 RCX: 0000000000455b59 [ 88.012702] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 88.019962] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 88.027235] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 88.034579] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 88.041850] CPU: 0 PID: 5915 Comm: syz-executor4 Not tainted 4.17.0-rc3-syzkaller #0 [ 88.042453] FAULT_INJECTION: forcing a failure. [ 88.042453] name fail_futex, interval 1, probability 0, space 0, times 0 [ 88.049750] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 88.049754] Call Trace: [ 88.049766] dump_stack+0x162/0x21a [ 88.049773] ? dump_stack_print_info.cold.2+0x48/0x48 [ 88.049785] should_fail.cold.4+0x5/0xd [ 88.049794] ? graph_lock+0x170/0x170 [ 88.089828] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 88.094942] ? __lock_acquire+0x7f5/0x5140 [ 88.099180] ? lock_acquire+0x1dc/0x520 [ 88.103154] ? find_held_lock+0x36/0x1c0 [ 88.107217] ? lock_downgrade+0x8e0/0x8e0 [ 88.111461] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 88.116468] ? kasan_check_read+0x11/0x20 [ 88.120604] ? rcu_is_watching+0x85/0x140 [ 88.124738] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 88.129916] ? rcu_read_lock+0x70/0x70 [ 88.133807] __alloc_pages_nodemask+0x34e/0xd70 [ 88.138466] ? page_remove_rmap+0x4eb/0xe00 [ 88.142783] ? __alloc_pages_slowpath+0x2db0/0x2db0 [ 88.147796] ? lock_downgrade+0x8e0/0x8e0 [ 88.151931] ? __lock_acquire+0x7f5/0x5140 [ 88.156168] ? find_held_lock+0x36/0x1c0 [ 88.160228] ? lock_acquire+0x1dc/0x520 [ 88.164205] ? lock_release+0xa10/0xa10 [ 88.168164] ? graph_lock+0x170/0x170 [ 88.171967] alloc_pages_current+0xd6/0x1b0 [ 88.176279] __get_free_pages+0xf/0x40 [ 88.180152] __tlb_remove_page_size+0x26b/0x4d0 [ 88.184805] unmap_page_range+0xc2c/0x1ff0 [ 88.189043] ? __activate_page+0x13b0/0x13b0 [ 88.193449] ? vm_normal_page_pmd+0x330/0x330 [ 88.197944] ? kasan_check_read+0x11/0x20 [ 88.202075] ? kasan_check_read+0x11/0x20 [ 88.206225] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 88.211407] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 88.216598] ? is_bpf_text_address+0x81/0xe0 [ 88.221012] ? kernel_text_address+0x79/0xf0 [ 88.225429] ? unwind_get_return_address+0x61/0xa0 [ 88.230353] ? graph_lock+0x170/0x170 [ 88.234143] ? __save_stack_trace+0x7e/0xd0 [ 88.238566] ? find_held_lock+0x36/0x1c0 [ 88.242624] ? lock_downgrade+0x8e0/0x8e0 [ 88.246760] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 88.251270] ? uprobe_mmap+0xc10/0xc10 [ 88.255140] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 88.259721] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 88.264829] unmap_single_vma+0x121/0x300 [ 88.268963] unmap_vmas+0xe2/0x190 [ 88.272493] exit_mmap+0x209/0x430 [ 88.276028] ? __ia32_sys_munmap+0x70/0x70 [ 88.280250] ? __khugepaged_exit+0x3a8/0x630 [ 88.284663] ? __might_sleep+0x95/0x190 [ 88.288709] mmput+0x1f4/0x550 [ 88.291883] ? lock_downgrade+0x8e0/0x8e0 [ 88.296035] ? set_mm_exe_file+0x1f0/0x1f0 [ 88.300266] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 88.304835] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 88.310191] ? kasan_check_write+0x14/0x20 [ 88.314421] ? do_raw_spin_lock+0xc1/0x200 [ 88.318758] do_exit+0xd0f/0x22f0 [ 88.322299] ? mm_update_next_owner+0xbd0/0xbd0 [ 88.326967] ? print_usage_bug+0xc0/0xc0 [ 88.331025] ? free_unref_page+0x9d0/0x9d0 [ 88.335244] ? trace_hardirqs_on+0xd/0x10 [ 88.339379] ? kasan_check_write+0x14/0x20 [ 88.343606] ? finish_task_switch+0x59e/0x810 [ 88.348084] ? __lock_acquire+0x7f5/0x5140 [ 88.352319] ? lock_repin_lock+0x410/0x410 [ 88.356560] ? pci_mmcfg_check_reserved+0x120/0x120 [ 88.361557] ? graph_lock+0x170/0x170 [ 88.365338] ? graph_lock+0x170/0x170 [ 88.369124] ? graph_lock+0x170/0x170 [ 88.372909] ? __mutex_lock+0x95d/0x17f0 [ 88.377522] ? graph_lock+0x170/0x170 [ 88.381311] ? find_held_lock+0x36/0x1c0 [ 88.385360] ? graph_lock+0x170/0x170 [ 88.389175] ? memset+0x31/0x40 [ 88.392440] ? find_held_lock+0x36/0x1c0 [ 88.396487] ? recalc_sigpending+0x6a/0x150 [ 88.400805] ? lock_downgrade+0x8e0/0x8e0 [ 88.404943] ? do_signal_stop+0x37a/0x8e0 [ 88.409235] do_group_exit+0x135/0x3b0 [ 88.413122] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 88.417713] ? __ia32_sys_exit+0x50/0x50 [ 88.421924] ? _raw_spin_unlock_irq+0x27/0x70 [ 88.426416] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 88.431420] get_signal+0x6a9/0x1480 [ 88.435126] ? ptrace_notify+0x110/0x110 [ 88.439172] ? kasan_check_write+0x14/0x20 [ 88.443408] ? ldsem_up_read+0x27/0x50 [ 88.447282] ? tty_ldisc_deref+0x30/0x40 [ 88.451329] ? kasan_check_read+0x11/0x20 [ 88.455813] ? rcu_is_watching+0x85/0x140 [ 88.459957] ? rcu_pm_notify+0xc0/0xc0 [ 88.463868] do_signal+0x98/0x2040 [ 88.467415] ? vfs_writev+0x1e9/0x320 [ 88.471203] ? setup_sigcontext+0x7d0/0x7d0 [ 88.475528] ? wait_for_completion+0x870/0x870 [ 88.480113] ? exit_to_usermode_loop+0x8a/0x2a0 [ 88.484789] exit_to_usermode_loop+0x1bf/0x2a0 [ 88.489357] ? vfs_writev+0x320/0x320 [ 88.493142] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 88.497989] do_syscall_64+0x573/0x6e0 [ 88.501866] ? syscall_return_slowpath+0x4c0/0x4c0 [ 88.506787] ? syscall_return_slowpath+0x20c/0x4c0 [ 88.511707] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 88.517058] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 88.521909] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 88.527083] RIP: 0033:0x455b59 [ 88.530256] RSP: 002b:00007f6347782c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 88.537952] RAX: fffffffffffffe00 RBX: 00007f63477836d4 RCX: 0000000000455b59 [ 88.545221] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 88.552482] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 88.559835] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 88.567108] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 88.574385] CPU: 1 PID: 5921 Comm: syz-executor Not tainted 4.17.0-rc3-syzkaller #0 [ 88.582288] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 88.591648] Call Trace: [ 88.594245] dump_stack+0x162/0x21a [ 88.597888] ? dump_stack_print_info.cold.2+0x48/0x48 [ 88.603102] should_fail.cold.4+0x5/0xd [ 88.607191] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 88.612308] ? __lock_acquire+0x7f5/0x5140 [ 88.616822] ? debug_check_no_locks_freed+0x310/0x310 [ 88.622023] ? kasan_unpoison_shadow+0x35/0x50 [ 88.626618] ? kasan_alloc_pages+0x38/0x40 [ 88.630863] ? get_page_from_freelist+0x10ff/0x4f00 [ 88.635893] ? check_noncircular+0x20/0x20 [ 88.640142] get_futex_key+0x2c3/0x1d10 [ 88.644127] ? __isolate_free_page+0x7c0/0x7c0 [ 88.648719] ? __lock_acquire+0x7f5/0x5140 [ 88.652960] ? futex_lock_pi_atomic+0x2a0/0x2a0 [ 88.657642] ? rb_erase_cached+0xc6a/0x32a0 [ 88.661968] ? rb_next+0x140/0x140 [ 88.665521] ? print_usage_bug+0xc0/0xc0 [ 88.669590] ? graph_lock+0x170/0x170 [ 88.673399] ? __lock_acquire+0x7f5/0x5140 [ 88.677645] ? __lock_is_held+0xb5/0x140 [ 88.681721] ? check_noncircular+0x20/0x20 [ 88.686114] ? rcu_read_lock_sched_held+0x108/0x120 [ 88.691140] ? update_cfs_rq_load_avg.part.67+0x241/0x2c0 [ 88.696683] ? tg_unthrottle_up+0x220/0x220 [ 88.701011] ? print_usage_bug+0xc0/0xc0 [ 88.705080] ? __update_load_avg_cfs_rq.isra.35+0x435/0x590 [ 88.710997] ? update_load_avg+0x1303/0x2570 [ 88.715842] ? print_usage_bug+0xc0/0xc0 [ 88.719905] ? print_usage_bug+0xc0/0xc0 [ 88.723970] ? __lock_acquire+0x7f5/0x5140 [ 88.728211] ? graph_lock+0x170/0x170 [ 88.732018] ? print_usage_bug+0xc0/0xc0 [ 88.736080] ? graph_lock+0x170/0x170 [ 88.740020] ? graph_lock+0x170/0x170 [ 88.743845] ? __lock_acquire+0x7f5/0x5140 [ 88.748103] ? debug_check_no_locks_freed+0x310/0x310 [ 88.753294] ? graph_lock+0x170/0x170 [ 88.757106] ? __update_load_avg_se.isra.34+0x61e/0x980 [ 88.762482] ? print_usage_bug+0xc0/0xc0 [ 88.766558] ? __update_load_avg_blocked_se.isra.33+0x460/0x460 [ 88.772621] ? print_usage_bug+0xc0/0xc0 [ 88.776686] ? print_usage_bug+0xc0/0xc0 [ 88.780748] ? print_usage_bug+0xc0/0xc0 [ 88.784811] ? update_load_avg+0x2d9/0x2570 [ 88.789144] ? update_load_avg+0x2d9/0x2570 [ 88.793473] futex_wake+0x15c/0x890 [ 88.797107] ? get_futex_key+0x1d10/0x1d10 [ 88.802426] ? __lock_acquire+0x7f5/0x5140 [ 88.806842] ? __lock_acquire+0x7f5/0x5140 [ 88.811089] do_futex+0x890/0x2620 [ 88.814919] ? debug_check_no_locks_freed+0x310/0x310 [ 88.820118] ? __lock_acquire+0x7f5/0x5140 [ 88.824364] ? find_held_lock+0x36/0x1c0 [ 88.828435] ? exit_robust_list+0x1b0/0x1b0 [ 88.832786] ? debug_check_no_locks_freed+0x310/0x310 [ 88.838116] ? graph_lock+0x170/0x170 [ 88.841921] ? debug_check_no_locks_freed+0x310/0x310 [ 88.847126] ? graph_lock+0x170/0x170 [ 88.850926] ? __lock_is_held+0xb5/0x140 [ 88.854984] ? graph_lock+0x170/0x170 [ 88.858785] ? find_held_lock+0x36/0x1c0 [ 88.862840] ? graph_lock+0x170/0x170 [ 88.866641] ? find_held_lock+0x36/0x1c0 [ 88.870697] ? find_held_lock+0x36/0x1c0 [ 88.874761] ? find_held_lock+0x36/0x1c0 [ 88.880052] ? lock_downgrade+0x8e0/0x8e0 [ 88.884208] ? lock_release+0xa10/0xa10 [ 88.888181] ? check_same_owner+0x320/0x320 [ 88.892505] ? __might_sleep+0x95/0x190 [ 88.896501] ? native_load_gs_index+0x2d/0x30 [ 88.901757] ? __might_sleep+0x95/0x190 [ 88.906603] mm_release+0x3ec/0x540 [ 88.910311] ? mm_access+0x120/0x120 [ 88.914033] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 88.919044] ? trace_hardirqs_on+0xd/0x10 [ 88.923209] ? _raw_spin_unlock_irq+0x27/0x70 [ 88.927705] ? acct_collect+0x64f/0x7c0 [ 88.931677] ? trace_hardirqs_on+0xd/0x10 [ 88.935823] do_exit+0x4b5/0x22f0 [ 88.939269] ? lock_downgrade+0x8e0/0x8e0 [ 88.943408] ? finish_task_switch+0x182/0x810 [ 88.947902] ? mm_update_next_owner+0xbd0/0xbd0 [ 88.952568] ? print_usage_bug+0xc0/0xc0 [ 88.956623] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 88.961115] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 88.965694] ? compat_start_thread+0x80/0x80 [ 88.970101] ? _raw_spin_unlock_irq+0x27/0x70 [ 88.974591] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 88.979602] ? trace_hardirqs_on+0xd/0x10 [ 88.983746] ? _raw_spin_unlock_irq+0x27/0x70 [ 88.988238] ? finish_task_switch+0x1ca/0x810 [ 88.992722] ? finish_task_switch+0x182/0x810 [ 88.997307] ? __lock_acquire+0x7f5/0x5140 [ 89.001571] ? lock_repin_lock+0x410/0x410 [ 89.005807] ? debug_check_no_locks_freed+0x310/0x310 [ 89.010997] ? pci_mmcfg_check_reserved+0x120/0x120 [ 89.016012] ? graph_lock+0x170/0x170 [ 89.019806] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 89.024560] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 89.029663] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 89.034812] ? trace_hardirqs_on+0xd/0x10 [ 89.039594] ? find_held_lock+0x36/0x1c0 [ 89.043762] ? graph_lock+0x170/0x170 [ 89.047618] ? memset+0x31/0x40 [ 89.050955] ? find_held_lock+0x36/0x1c0 [ 89.055017] ? recalc_sigpending+0x6a/0x150 [ 89.059429] ? lock_downgrade+0x8e0/0x8e0 [ 89.064105] ? do_signal_stop+0x37a/0x8e0 [ 89.068270] do_group_exit+0x135/0x3b0 [ 89.072164] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 89.077177] ? __ia32_sys_exit+0x50/0x50 [ 89.081239] ? _raw_spin_unlock_irq+0x27/0x70 [ 89.085755] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 89.090798] get_signal+0x6a9/0x1480 [ 89.094507] ? ptrace_notify+0x110/0x110 [ 89.098562] ? kasan_check_write+0x14/0x20 [ 89.102781] ? ldsem_up_read+0x27/0x50 [ 89.106770] ? tty_ldisc_deref+0x30/0x40 [ 89.110830] ? kasan_check_read+0x11/0x20 [ 89.114982] ? rcu_is_watching+0x85/0x140 [ 89.119117] ? rcu_pm_notify+0xc0/0xc0 [ 89.122997] do_signal+0x98/0x2040 [ 89.126550] ? vfs_writev+0x1e9/0x320 [ 89.130342] ? setup_sigcontext+0x7d0/0x7d0 [ 89.134651] ? wait_for_completion+0x870/0x870 [ 89.139591] ? exit_to_usermode_loop+0x8a/0x2a0 [ 89.144251] exit_to_usermode_loop+0x1bf/0x2a0 [ 89.148839] ? vfs_writev+0x320/0x320 [ 89.152628] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 89.157492] do_syscall_64+0x573/0x6e0 [ 89.161637] ? syscall_return_slowpath+0x4c0/0x4c0 [ 89.166659] ? syscall_return_slowpath+0x20c/0x4c0 [ 89.171585] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 89.176947] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 89.181862] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 89.187042] RIP: 0033:0x455b59 [ 89.190219] RSP: 002b:00007f4020685c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 89.197943] RAX: fffffffffffffe00 RBX: 00007f40206866d4 RCX: 0000000000455b59 [ 89.205206] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 89.212475] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 89.221269] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 89.228539] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 89.595647] FAULT_INJECTION: forcing a failure. [ 89.595647] name failslab, interval 1, probability 0, space 0, times 0 [ 89.607108] CPU: 1 PID: 5943 Comm: syz-executor1 Not tainted 4.17.0-rc3-syzkaller #0 [ 89.615377] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 89.624736] Call Trace: [ 89.627391] dump_stack+0x162/0x21a [ 89.631042] ? dump_stack_print_info.cold.2+0x48/0x48 [ 89.636346] should_fail.cold.4+0x5/0xd [ 89.640318] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 89.645499] ? graph_lock+0x170/0x170 [ 89.649295] ? debug_check_no_locks_freed+0x310/0x310 [ 89.654497] ? debug_check_no_locks_freed+0x310/0x310 [ 89.659698] ? task_numa_work+0xef0/0xef0 [ 89.659989] FAULT_INJECTION: forcing a failure. [ 89.659989] name fail_futex, interval 1, probability 0, space 0, times 0 [ 89.663845] ? find_held_lock+0x36/0x1c0 [ 89.663865] ? check_same_owner+0x320/0x320 [ 89.663875] ? rcu_note_context_switch+0x710/0x710 [ 89.663888] __should_failslab+0xba/0xf0 [ 89.663896] should_failslab+0x9/0x14 [ 89.663901] kmem_cache_alloc+0x2af/0x760 [ 89.663907] ? find_held_lock+0x36/0x1c0 [ 89.663917] taskstats_exit+0x6fd/0x1040 [ 89.663926] ? taskstats_user_cmd+0x11d0/0x11d0 [ 89.663936] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 89.717733] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 89.722303] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 89.727311] ? trace_hardirqs_on+0xd/0x10 [ 89.731444] ? _raw_spin_unlock_irq+0x27/0x70 [ 89.735928] ? acct_collect+0x64f/0x7c0 [ 89.739886] ? trace_hardirqs_on+0xd/0x10 [ 89.744024] do_exit+0x47a/0x22f0 [ 89.747462] ? lock_downgrade+0x8e0/0x8e0 [ 89.751788] ? finish_task_switch+0x182/0x810 [ 89.756278] ? mm_update_next_owner+0xbd0/0xbd0 [ 89.761624] ? print_usage_bug+0xc0/0xc0 [ 89.766119] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 89.770599] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 89.775177] ? compat_start_thread+0x80/0x80 [ 89.779741] ? _raw_spin_unlock_irq+0x27/0x70 [ 89.784833] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 89.789835] ? trace_hardirqs_on+0xd/0x10 [ 89.793969] ? _raw_spin_unlock_irq+0x27/0x70 [ 89.798448] ? finish_task_switch+0x1ca/0x810 [ 89.802924] ? finish_task_switch+0x182/0x810 [ 89.807418] ? __lock_acquire+0x7f5/0x5140 [ 89.811728] ? lock_repin_lock+0x410/0x410 [ 89.815956] ? debug_check_no_locks_freed+0x310/0x310 [ 89.821135] ? pci_mmcfg_check_reserved+0x120/0x120 [ 89.826137] ? graph_lock+0x170/0x170 [ 89.829929] ? graph_lock+0x170/0x170 [ 89.834249] ? graph_lock+0x170/0x170 [ 89.838044] ? __mutex_lock+0x95d/0x17f0 [ 89.842092] ? graph_lock+0x170/0x170 [ 89.845883] ? find_held_lock+0x36/0x1c0 [ 89.850365] ? graph_lock+0x170/0x170 [ 89.854162] ? memset+0x31/0x40 [ 89.857513] ? find_held_lock+0x36/0x1c0 [ 89.861561] ? recalc_sigpending+0x6a/0x150 [ 89.865872] ? lock_downgrade+0x8e0/0x8e0 [ 89.870001] ? do_signal_stop+0x37a/0x8e0 [ 89.874152] do_group_exit+0x135/0x3b0 [ 89.878023] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 89.882592] ? __ia32_sys_exit+0x50/0x50 [ 89.886642] ? _raw_spin_unlock_irq+0x27/0x70 [ 89.891120] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 89.896123] get_signal+0x6a9/0x1480 [ 89.899867] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 89.904869] ? ptrace_notify+0x110/0x110 [ 89.908926] ? retint_kernel+0x10/0x10 [ 89.913409] ? kasan_check_read+0x11/0x20 [ 89.917542] ? rcu_is_watching+0x85/0x140 [ 89.921688] ? rcu_pm_notify+0xc0/0xc0 [ 89.925558] ? do_iter_write+0x374/0x550 [ 89.929611] do_signal+0x98/0x2040 [ 89.933136] ? vfs_writev+0x1e9/0x320 [ 89.936922] ? setup_sigcontext+0x7d0/0x7d0 [ 89.941232] ? wait_for_completion+0x870/0x870 [ 89.945823] ? exit_to_usermode_loop+0x8a/0x2a0 [ 89.950478] exit_to_usermode_loop+0x1bf/0x2a0 [ 89.955058] ? vfs_writev+0x320/0x320 [ 89.958844] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 89.963683] do_syscall_64+0x573/0x6e0 [ 89.967575] ? syscall_return_slowpath+0x4c0/0x4c0 [ 89.972489] ? syscall_return_slowpath+0x20c/0x4c0 [ 89.977409] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 89.982759] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 89.987605] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 89.992792] RIP: 0033:0x455b59 [ 89.995971] RSP: 002b:00007f4f3cfeec68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 90.003678] RAX: fffffffffffffe00 RBX: 00007f4f3cfef6d4 RCX: 0000000000455b59 [ 90.010954] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 90.018233] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 90.025497] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 90.032757] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 90.040051] CPU: 0 PID: 5949 Comm: syz-executor5 Not tainted 4.17.0-rc3-syzkaller #0 [ 90.040989] FAULT_INJECTION: forcing a failure. [ 90.040989] name fail_futex, interval 1, probability 0, space 0, times 0 [ 90.047937] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 90.047941] Call Trace: [ 90.047954] dump_stack+0x162/0x21a [ 90.047961] ? dump_stack_print_info.cold.2+0x48/0x48 [ 90.047972] should_fail.cold.4+0x5/0xd [ 90.047979] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 90.047986] ? __lock_acquire+0x7f5/0x5140 [ 90.047995] ? print_usage_bug+0xc0/0xc0 [ 90.100096] ? debug_check_no_locks_freed+0x310/0x310 [ 90.105283] ? __lock_acquire+0x7f5/0x5140 [ 90.109510] ? kasan_unpoison_shadow+0x35/0x50 [ 90.114081] ? update_group_capacity+0xfe/0xd20 [ 90.118823] ? get_page_from_freelist+0x10ff/0x4f00 [ 90.123835] ? update_blocked_averages+0x1750/0x1750 [ 90.128928] get_futex_key+0x2c3/0x1d10 [ 90.132899] ? update_sd_lb_stats+0x44e/0x2c30 [ 90.137471] ? __lock_acquire+0x7f5/0x5140 [ 90.141693] ? futex_lock_pi_atomic+0x2a0/0x2a0 [ 90.146351] ? rb_erase_cached+0xc6a/0x32a0 [ 90.150660] ? debug_check_no_locks_freed+0x310/0x310 [ 90.155835] ? graph_lock+0x170/0x170 [ 90.159626] ? attach_entity_load_avg+0x850/0x850 [ 90.164469] ? graph_lock+0x170/0x170 [ 90.168257] ? find_held_lock+0x36/0x1c0 [ 90.172427] ? check_noncircular+0x20/0x20 [ 90.176646] ? graph_lock+0x170/0x170 [ 90.180435] ? lock_downgrade+0x8e0/0x8e0 [ 90.184593] ? find_held_lock+0x36/0x1c0 [ 90.188669] ? lock_downgrade+0x8e0/0x8e0 [ 90.192813] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 90.197302] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 90.201875] ? kasan_check_write+0x14/0x20 [ 90.206098] ? __free_pages_ok+0x1b70/0x2bd0 [ 90.210490] ? print_usage_bug+0xc0/0xc0 [ 90.214535] ? trace_hardirqs_on+0xd/0x10 [ 90.218666] ? print_usage_bug+0xc0/0xc0 [ 90.222711] ? print_usage_bug+0xc0/0xc0 [ 90.226755] ? print_usage_bug+0xc0/0xc0 [ 90.230804] ? update_load_avg+0x2d9/0x2570 [ 90.235116] futex_wake+0x15c/0x890 [ 90.238733] ? get_futex_key+0x1d10/0x1d10 [ 90.242977] ? __lock_acquire+0x7f5/0x5140 [ 90.247212] ? __lock_acquire+0x7f5/0x5140 [ 90.251617] do_futex+0x890/0x2620 [ 90.255176] ? debug_check_no_locks_freed+0x310/0x310 [ 90.260357] ? __lock_acquire+0x7f5/0x5140 [ 90.264577] ? exit_robust_list+0x1b0/0x1b0 [ 90.268891] ? debug_check_no_locks_freed+0x310/0x310 [ 90.274066] ? graph_lock+0x170/0x170 [ 90.277852] ? debug_check_no_locks_freed+0x310/0x310 [ 90.283029] ? graph_lock+0x170/0x170 [ 90.286816] ? __lock_acquire+0x7f5/0x5140 [ 90.291038] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 90.296212] ? graph_lock+0x170/0x170 [ 90.300032] ? find_held_lock+0x36/0x1c0 [ 90.304096] ? graph_lock+0x170/0x170 [ 90.307889] ? find_held_lock+0x36/0x1c0 [ 90.311945] ? find_held_lock+0x36/0x1c0 [ 90.315999] ? find_held_lock+0x36/0x1c0 [ 90.320067] ? lock_downgrade+0x8e0/0x8e0 [ 90.324208] ? lock_release+0xa10/0xa10 [ 90.328166] ? check_same_owner+0x320/0x320 [ 90.332489] ? __might_sleep+0x95/0x190 [ 90.336451] ? native_load_gs_index+0x2d/0x30 [ 90.340934] ? __might_sleep+0x95/0x190 [ 90.344897] mm_release+0x3ec/0x540 [ 90.348521] ? mm_access+0x120/0x120 [ 90.352396] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 90.357405] ? trace_hardirqs_on+0xd/0x10 [ 90.362082] ? _raw_spin_unlock_irq+0x27/0x70 [ 90.366588] ? acct_collect+0x64f/0x7c0 [ 90.370826] ? trace_hardirqs_on+0xd/0x10 [ 90.374963] do_exit+0x4b5/0x22f0 [ 90.378411] ? mm_update_next_owner+0xbd0/0xbd0 [ 90.383065] ? print_usage_bug+0xc0/0xc0 [ 90.387111] ? free_unref_page+0x9d0/0x9d0 [ 90.391507] ? trace_hardirqs_on+0xd/0x10 [ 90.395651] ? kasan_check_write+0x14/0x20 [ 90.399869] ? finish_task_switch+0x59e/0x810 [ 90.405134] ? __lock_acquire+0x7f5/0x5140 [ 90.409359] ? lock_repin_lock+0x410/0x410 [ 90.413583] ? debug_check_no_locks_freed+0x310/0x310 [ 90.418771] ? pci_mmcfg_check_reserved+0x120/0x120 [ 90.423788] ? graph_lock+0x170/0x170 [ 90.427570] ? graph_lock+0x170/0x170 [ 90.431360] ? graph_lock+0x170/0x170 [ 90.435149] ? __mutex_lock+0x95d/0x17f0 [ 90.439199] ? graph_lock+0x170/0x170 [ 90.442988] ? find_held_lock+0x36/0x1c0 [ 90.447040] ? graph_lock+0x170/0x170 [ 90.450830] ? memset+0x31/0x40 [ 90.454096] ? find_held_lock+0x36/0x1c0 [ 90.458146] ? recalc_sigpending+0x6a/0x150 [ 90.462459] ? lock_downgrade+0x8e0/0x8e0 [ 90.466616] ? do_signal_stop+0x37a/0x8e0 [ 90.470754] do_group_exit+0x135/0x3b0 [ 90.474631] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 90.479197] ? __ia32_sys_exit+0x50/0x50 [ 90.483250] ? _raw_spin_unlock_irq+0x27/0x70 [ 90.487731] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 90.492734] get_signal+0x6a9/0x1480 [ 90.496453] ? ptrace_notify+0x110/0x110 [ 90.500497] ? kasan_check_write+0x14/0x20 [ 90.504733] ? ldsem_up_read+0x27/0x50 [ 90.508693] ? tty_ldisc_deref+0x30/0x40 [ 90.512738] ? kasan_check_read+0x11/0x20 [ 90.516869] ? rcu_is_watching+0x85/0x140 [ 90.521001] ? rcu_pm_notify+0xc0/0xc0 [ 90.524882] do_signal+0x98/0x2040 [ 90.528407] ? vfs_writev+0x1e9/0x320 [ 90.532202] ? setup_sigcontext+0x7d0/0x7d0 [ 90.536596] ? wait_for_completion+0x870/0x870 [ 90.541202] ? exit_to_usermode_loop+0x8a/0x2a0 [ 90.545872] exit_to_usermode_loop+0x1bf/0x2a0 [ 90.550447] ? vfs_writev+0x320/0x320 [ 90.554233] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 90.559087] do_syscall_64+0x573/0x6e0 [ 90.562976] ? finish_task_switch+0x1ca/0x810 [ 90.567464] ? syscall_return_slowpath+0x4c0/0x4c0 [ 90.572384] ? syscall_return_slowpath+0x20c/0x4c0 [ 90.577321] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 90.582760] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 90.587593] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 90.592768] RIP: 0033:0x455b59 [ 90.595941] RSP: 002b:00007f7244173c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 90.603634] RAX: fffffffffffffe00 RBX: 00007f72441746d4 RCX: 0000000000455b59 [ 90.611772] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 90.619028] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 90.626283] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 90.633535] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 90.640817] CPU: 1 PID: 5944 Comm: syz-executor3 Not tainted 4.17.0-rc3-syzkaller #0 [ 90.644590] FAULT_INJECTION: forcing a failure. [ 90.644590] name fail_futex, interval 1, probability 0, space 0, times 0 [ 90.648791] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 90.648795] Call Trace: [ 90.648808] dump_stack+0x162/0x21a [ 90.648815] ? dump_stack_print_info.cold.2+0x48/0x48 [ 90.648823] ? find_held_lock+0x36/0x1c0 [ 90.648834] should_fail.cold.4+0x5/0xd [ 90.648842] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 90.694953] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 90.699438] ? rb_erase_cached+0xc6a/0x32a0 [ 90.703749] ? rb_next+0x140/0x140 [ 90.707648] ? kasan_alloc_pages+0x38/0x40 [ 90.711867] ? get_page_from_freelist+0x10ff/0x4f00 [ 90.716883] get_futex_key+0x2c3/0x1d10 [ 90.720845] ? __isolate_free_page+0x7c0/0x7c0 [ 90.725418] ? __lock_acquire+0x7f5/0x5140 [ 90.729661] ? futex_lock_pi_atomic+0x2a0/0x2a0 [ 90.734314] ? print_usage_bug+0xc0/0xc0 [ 90.738376] ? print_usage_bug+0xc0/0xc0 [ 90.742427] ? print_usage_bug+0xc0/0xc0 [ 90.746486] ? graph_lock+0x170/0x170 [ 90.750288] ? __lock_acquire+0x7f5/0x5140 [ 90.754512] ? graph_lock+0x170/0x170 [ 90.758296] ? __lock_is_held+0xb5/0x140 [ 90.762343] ? check_noncircular+0x20/0x20 [ 90.766564] ? __update_load_avg_se.isra.34+0x61e/0x980 [ 90.771914] ? __update_load_avg_blocked_se.isra.33+0x460/0x460 [ 90.777977] ? print_usage_bug+0xc0/0xc0 [ 90.782031] ? update_load_avg+0x2d9/0x2570 [ 90.786357] ? update_load_avg+0x1303/0x2570 [ 90.790792] ? print_usage_bug+0xc0/0xc0 [ 90.795533] ? print_usage_bug+0xc0/0xc0 [ 90.799578] ? attach_entity_load_avg+0x850/0x850 [ 90.804408] ? __lock_acquire+0x7f5/0x5140 [ 90.808724] ? graph_lock+0x170/0x170 [ 90.812508] ? print_usage_bug+0xc0/0xc0 [ 90.816570] ? graph_lock+0x170/0x170 [ 90.820355] ? __lock_acquire+0x7f5/0x5140 [ 90.824572] ? debug_check_no_locks_freed+0x310/0x310 [ 90.829747] ? graph_lock+0x170/0x170 [ 90.833531] ? find_held_lock+0x36/0x1c0 [ 90.837576] ? print_usage_bug+0xc0/0xc0 [ 90.841630] ? print_usage_bug+0xc0/0xc0 [ 90.845676] ? print_usage_bug+0xc0/0xc0 [ 90.849721] ? print_usage_bug+0xc0/0xc0 [ 90.853769] ? update_load_avg+0x2d9/0x2570 [ 90.858078] futex_wake+0x15c/0x890 [ 90.861703] ? get_futex_key+0x1d10/0x1d10 [ 90.865927] ? __lock_acquire+0x7f5/0x5140 [ 90.870148] ? __lock_acquire+0x7f5/0x5140 [ 90.874370] do_futex+0x890/0x2620 [ 90.877894] ? debug_check_no_locks_freed+0x310/0x310 [ 90.883078] ? __lock_acquire+0x7f5/0x5140 [ 90.887296] ? find_held_lock+0x36/0x1c0 [ 90.891343] ? exit_robust_list+0x1b0/0x1b0 [ 90.895657] ? debug_check_no_locks_freed+0x310/0x310 [ 90.900848] ? graph_lock+0x170/0x170 [ 90.904639] ? debug_check_no_locks_freed+0x310/0x310 [ 90.909821] ? graph_lock+0x170/0x170 [ 90.913626] ? __lock_is_held+0xb5/0x140 [ 90.917674] ? graph_lock+0x170/0x170 [ 90.921460] ? find_held_lock+0x36/0x1c0 [ 90.925504] ? graph_lock+0x170/0x170 [ 90.929302] ? find_held_lock+0x36/0x1c0 [ 90.933348] ? find_held_lock+0x36/0x1c0 [ 90.937397] ? find_held_lock+0x36/0x1c0 [ 90.941451] ? lock_downgrade+0x8e0/0x8e0 [ 90.945591] ? lock_release+0xa10/0xa10 [ 90.949559] ? check_same_owner+0x320/0x320 [ 90.953879] ? __might_sleep+0x95/0x190 [ 90.957838] ? native_load_gs_index+0x2d/0x30 [ 90.962323] ? __might_sleep+0x95/0x190 [ 90.966289] mm_release+0x3ec/0x540 [ 90.969903] ? mm_access+0x120/0x120 [ 90.973604] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 90.978607] ? trace_hardirqs_on+0xd/0x10 [ 90.982764] ? _raw_spin_unlock_irq+0x27/0x70 [ 90.987243] ? acct_collect+0x64f/0x7c0 [ 90.991200] ? trace_hardirqs_on+0xd/0x10 [ 90.995337] do_exit+0x4b5/0x22f0 [ 90.998784] ? lock_downgrade+0x8e0/0x8e0 [ 91.002915] ? finish_task_switch+0x182/0x810 [ 91.007396] ? mm_update_next_owner+0xbd0/0xbd0 [ 91.012138] ? print_usage_bug+0xc0/0xc0 [ 91.016184] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 91.020664] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 91.025233] ? compat_start_thread+0x80/0x80 [ 91.029632] ? _raw_spin_unlock_irq+0x27/0x70 [ 91.034116] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 91.039130] ? trace_hardirqs_on+0xd/0x10 [ 91.043263] ? _raw_spin_unlock_irq+0x27/0x70 [ 91.047745] ? finish_task_switch+0x1ca/0x810 [ 91.052229] ? finish_task_switch+0x182/0x810 [ 91.056800] ? __lock_acquire+0x7f5/0x5140 [ 91.061039] ? lock_repin_lock+0x410/0x410 [ 91.065275] ? debug_check_no_locks_freed+0x310/0x310 [ 91.070460] ? pci_mmcfg_check_reserved+0x120/0x120 [ 91.075466] ? graph_lock+0x170/0x170 [ 91.079268] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 91.083841] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 91.088931] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 91.093934] ? trace_hardirqs_on+0xd/0x10 [ 91.098069] ? find_held_lock+0x36/0x1c0 [ 91.102120] ? graph_lock+0x170/0x170 [ 91.105912] ? memset+0x31/0x40 [ 91.109180] ? find_held_lock+0x36/0x1c0 [ 91.113238] ? recalc_sigpending+0x6a/0x150 [ 91.117545] ? lock_downgrade+0x8e0/0x8e0 [ 91.121685] ? do_signal_stop+0x37a/0x8e0 [ 91.125819] do_group_exit+0x135/0x3b0 [ 91.129692] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 91.134258] ? __ia32_sys_exit+0x50/0x50 [ 91.138305] ? _raw_spin_unlock_irq+0x27/0x70 [ 91.143480] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 91.148487] get_signal+0x6a9/0x1480 [ 91.152195] ? ptrace_notify+0x110/0x110 [ 91.156241] ? kasan_check_write+0x14/0x20 [ 91.160467] ? ldsem_up_read+0x27/0x50 [ 91.164359] ? tty_ldisc_deref+0x30/0x40 [ 91.168411] ? kasan_check_read+0x11/0x20 [ 91.172542] ? rcu_is_watching+0x85/0x140 [ 91.176676] ? rcu_pm_notify+0xc0/0xc0 [ 91.180568] do_signal+0x98/0x2040 [ 91.184094] ? vfs_writev+0x1e9/0x320 [ 91.187883] ? setup_sigcontext+0x7d0/0x7d0 [ 91.192189] ? wait_for_completion+0x870/0x870 [ 91.196772] ? exit_to_usermode_loop+0x8a/0x2a0 [ 91.201432] exit_to_usermode_loop+0x1bf/0x2a0 [ 91.206002] ? vfs_writev+0x320/0x320 [ 91.209799] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 91.214711] do_syscall_64+0x573/0x6e0 [ 91.218608] ? syscall_return_slowpath+0x4c0/0x4c0 [ 91.224158] ? syscall_return_slowpath+0x20c/0x4c0 [ 91.229094] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 91.234464] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 91.239299] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 91.244490] RIP: 0033:0x455b59 2019/11/25 02:23:42 executed programs: 50 [ 91.247766] RSP: 002b:00007efee9daec68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 91.255464] RAX: fffffffffffffe00 RBX: 00007efee9daf6d4 RCX: 0000000000455b59 [ 91.262725] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 91.269996] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 91.277258] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 91.284601] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 91.292050] CPU: 0 PID: 5945 Comm: syz-executor4 Not tainted 4.17.0-rc3-syzkaller #0 [ 91.299951] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 91.309310] Call Trace: [ 91.311907] dump_stack+0x162/0x21a [ 91.315567] ? dump_stack_print_info.cold.2+0x48/0x48 [ 91.320776] should_fail.cold.4+0x5/0xd [ 91.325102] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 91.331770] ? __lock_acquire+0x7f5/0x5140 [ 91.336006] ? print_usage_bug+0xc0/0xc0 [ 91.340060] ? rb_erase_cached+0xc6a/0x32a0 [ 91.344395] ? __lock_acquire+0x7f5/0x5140 [ 91.348623] ? rb_next+0x140/0x140 [ 91.352163] ? kasan_alloc_pages+0x38/0x40 [ 91.356476] ? get_page_from_freelist+0x10ff/0x4f00 [ 91.361496] ? check_noncircular+0x20/0x20 [ 91.365827] get_futex_key+0x2c3/0x1d10 [ 91.369795] ? __isolate_free_page+0x7c0/0x7c0 [ 91.374371] ? __lock_acquire+0x7f5/0x5140 [ 91.378600] ? __lock_acquire+0x7f5/0x5140 [ 91.383264] ? futex_lock_pi_atomic+0x2a0/0x2a0 [ 91.387927] ? rb_erase_cached+0xc6a/0x32a0 [ 91.392245] ? debug_check_no_locks_freed+0x310/0x310 [ 91.397424] ? graph_lock+0x170/0x170 [ 91.401301] ? print_usage_bug+0xc0/0xc0 [ 91.403810] FAULT_INJECTION: forcing a failure. [ 91.403810] name fail_futex, interval 1, probability 0, space 0, times 0 [ 91.405352] ? graph_lock+0x170/0x170 [ 91.405361] ? graph_lock+0x170/0x170 [ 91.405366] ? find_held_lock+0x36/0x1c0 [ 91.405382] ? check_noncircular+0x20/0x20 [ 91.405391] ? graph_lock+0x170/0x170 [ 91.436333] ? lock_downgrade+0x8e0/0x8e0 [ 91.440471] ? find_held_lock+0x36/0x1c0 [ 91.444525] ? lock_downgrade+0x8e0/0x8e0 [ 91.448675] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 91.453157] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 91.457724] ? kasan_check_write+0x14/0x20 [ 91.461946] ? __free_pages_ok+0x1b70/0x2bd0 [ 91.466340] ? print_usage_bug+0xc0/0xc0 [ 91.470385] ? trace_hardirqs_on+0xd/0x10 [ 91.474518] ? print_usage_bug+0xc0/0xc0 [ 91.478569] ? print_usage_bug+0xc0/0xc0 [ 91.482617] ? print_usage_bug+0xc0/0xc0 [ 91.486662] ? update_load_avg+0x2d9/0x2570 [ 91.490972] futex_wake+0x15c/0x890 [ 91.494590] ? get_futex_key+0x1d10/0x1d10 [ 91.498825] ? __lock_acquire+0x7f5/0x5140 [ 91.503073] ? __lock_acquire+0x7f5/0x5140 [ 91.507305] do_futex+0x890/0x2620 [ 91.510844] ? debug_check_no_locks_freed+0x310/0x310 [ 91.516029] ? __lock_acquire+0x7f5/0x5140 [ 91.520265] ? find_held_lock+0x36/0x1c0 [ 91.524325] ? exit_robust_list+0x1b0/0x1b0 [ 91.528635] ? debug_check_no_locks_freed+0x310/0x310 [ 91.533824] ? graph_lock+0x170/0x170 [ 91.537609] ? debug_check_no_locks_freed+0x310/0x310 [ 91.542795] ? graph_lock+0x170/0x170 [ 91.546581] ? __lock_acquire+0x7f5/0x5140 [ 91.550802] ? __lock_is_held+0xb5/0x140 [ 91.554851] ? graph_lock+0x170/0x170 [ 91.558640] ? find_held_lock+0x36/0x1c0 [ 91.562685] ? graph_lock+0x170/0x170 [ 91.566468] ? find_held_lock+0x36/0x1c0 [ 91.570538] ? find_held_lock+0x36/0x1c0 [ 91.574600] ? find_held_lock+0x36/0x1c0 [ 91.578652] ? lock_downgrade+0x8e0/0x8e0 [ 91.582784] ? lock_release+0xa10/0xa10 [ 91.586745] ? check_same_owner+0x320/0x320 [ 91.591052] ? __might_sleep+0x95/0x190 [ 91.595012] ? native_load_gs_index+0x2d/0x30 [ 91.599497] ? __might_sleep+0x95/0x190 [ 91.603464] mm_release+0x3ec/0x540 [ 91.607074] ? mm_access+0x120/0x120 [ 91.610774] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 91.615807] ? trace_hardirqs_on+0xd/0x10 [ 91.619966] ? _raw_spin_unlock_irq+0x27/0x70 [ 91.624459] ? acct_collect+0x64f/0x7c0 [ 91.628443] ? trace_hardirqs_on+0xd/0x10 [ 91.632589] do_exit+0x4b5/0x22f0 [ 91.636039] ? mm_update_next_owner+0xbd0/0xbd0 [ 91.640696] ? print_usage_bug+0xc0/0xc0 [ 91.644742] ? free_unref_page+0x9d0/0x9d0 [ 91.648969] ? trace_hardirqs_on+0xd/0x10 [ 91.653106] ? kasan_check_write+0x14/0x20 [ 91.657418] ? finish_task_switch+0x59e/0x810 [ 91.661899] ? __lock_acquire+0x7f5/0x5140 [ 91.666117] ? lock_repin_lock+0x410/0x410 [ 91.670426] ? debug_check_no_locks_freed+0x310/0x310 [ 91.675605] ? pci_mmcfg_check_reserved+0x120/0x120 [ 91.680617] ? graph_lock+0x170/0x170 [ 91.684412] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 91.688979] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 91.694075] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 91.699080] ? trace_hardirqs_on+0xd/0x10 [ 91.703219] ? find_held_lock+0x36/0x1c0 [ 91.707369] ? graph_lock+0x170/0x170 [ 91.711162] ? memset+0x31/0x40 [ 91.714425] ? find_held_lock+0x36/0x1c0 [ 91.718471] ? recalc_sigpending+0x6a/0x150 [ 91.722785] ? lock_downgrade+0x8e0/0x8e0 [ 91.726933] ? do_signal_stop+0x37a/0x8e0 [ 91.731069] do_group_exit+0x135/0x3b0 [ 91.734959] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 91.739538] ? __ia32_sys_exit+0x50/0x50 [ 91.743598] ? _raw_spin_unlock_irq+0x27/0x70 [ 91.748090] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 91.753101] get_signal+0x6a9/0x1480 [ 91.756829] ? ptrace_notify+0x110/0x110 [ 91.760878] ? kasan_check_write+0x14/0x20 [ 91.765109] ? ldsem_up_read+0x27/0x50 [ 91.768979] ? tty_ldisc_deref+0x30/0x40 [ 91.773025] ? kasan_check_read+0x11/0x20 [ 91.777161] ? rcu_is_watching+0x85/0x140 [ 91.781298] ? rcu_pm_notify+0xc0/0xc0 [ 91.785182] do_signal+0x98/0x2040 [ 91.788713] ? vfs_writev+0x1e9/0x320 [ 91.792500] ? setup_sigcontext+0x7d0/0x7d0 [ 91.796803] ? wait_for_completion+0x870/0x870 [ 91.801385] ? exit_to_usermode_loop+0x8a/0x2a0 [ 91.806042] exit_to_usermode_loop+0x1bf/0x2a0 [ 91.810608] ? vfs_writev+0x320/0x320 [ 91.814400] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 91.819228] do_syscall_64+0x573/0x6e0 [ 91.823121] ? finish_task_switch+0x1ca/0x810 [ 91.828052] ? syscall_return_slowpath+0x4c0/0x4c0 [ 91.832964] ? syscall_return_slowpath+0x20c/0x4c0 [ 91.837890] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 91.843764] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 91.848591] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 91.853765] RIP: 0033:0x455b59 [ 91.856950] RSP: 002b:00007f6347782c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 91.864644] RAX: fffffffffffffe00 RBX: 00007f63477836d4 RCX: 0000000000455b59 [ 91.872007] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 91.879350] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 91.886614] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 91.893867] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 91.901136] CPU: 1 PID: 5951 Comm: syz-executor2 Not tainted 4.17.0-rc3-syzkaller #0 [ 91.909036] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 91.918835] Call Trace: [ 91.921434] dump_stack+0x162/0x21a [ 91.925069] ? dump_stack_print_info.cold.2+0x48/0x48 [ 91.930264] should_fail.cold.4+0x5/0xd [ 91.934242] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 91.939971] ? print_usage_bug+0xc0/0xc0 [ 91.944052] ? debug_check_no_locks_freed+0x310/0x310 [ 91.949262] ? __lock_acquire+0x7f5/0x5140 [ 91.953518] ? kasan_unpoison_shadow+0x35/0x50 [ 91.958106] ? kasan_alloc_pages+0x38/0x40 [ 91.962346] ? get_page_from_freelist+0x10ff/0x4f00 [ 91.967379] ? update_blocked_averages+0x1750/0x1750 [ 91.972494] get_futex_key+0x2c3/0x1d10 [ 91.976467] ? update_sd_lb_stats+0x44e/0x2c30 [ 91.981841] ? __lock_acquire+0x7f5/0x5140 [ 91.986179] ? futex_lock_pi_atomic+0x2a0/0x2a0 [ 91.990856] ? rb_erase_cached+0xc6a/0x32a0 [ 91.995199] ? debug_check_no_locks_freed+0x310/0x310 [ 92.000390] ? graph_lock+0x170/0x170 [ 92.004363] ? attach_entity_load_avg+0x850/0x850 [ 92.009208] ? graph_lock+0x170/0x170 [ 92.013022] ? find_held_lock+0x36/0x1c0 [ 92.017092] ? check_noncircular+0x20/0x20 [ 92.021323] ? graph_lock+0x170/0x170 [ 92.025122] ? lock_downgrade+0x8e0/0x8e0 [ 92.029288] ? find_held_lock+0x36/0x1c0 [ 92.033359] ? lock_downgrade+0x8e0/0x8e0 [ 92.037543] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 92.042091] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 92.046681] ? kasan_check_write+0x14/0x20 [ 92.050926] ? __free_pages_ok+0x1b70/0x2bd0 [ 92.055340] ? print_usage_bug+0xc0/0xc0 [ 92.059404] ? trace_hardirqs_on+0xd/0x10 [ 92.063715] ? print_usage_bug+0xc0/0xc0 [ 92.067788] ? print_usage_bug+0xc0/0xc0 [ 92.072113] ? print_usage_bug+0xc0/0xc0 [ 92.076174] ? update_load_avg+0x2d9/0x2570 [ 92.080499] futex_wake+0x15c/0x890 [ 92.084129] ? get_futex_key+0x1d10/0x1d10 [ 92.088362] ? __lock_acquire+0x7f5/0x5140 [ 92.092604] ? __lock_acquire+0x7f5/0x5140 [ 92.096843] do_futex+0x890/0x2620 [ 92.100380] ? debug_check_no_locks_freed+0x310/0x310 [ 92.105571] ? __lock_acquire+0x7f5/0x5140 [ 92.109812] ? exit_robust_list+0x1b0/0x1b0 [ 92.114153] ? debug_check_no_locks_freed+0x310/0x310 [ 92.119342] ? graph_lock+0x170/0x170 [ 92.123573] ? debug_check_no_locks_freed+0x310/0x310 [ 92.128767] ? graph_lock+0x170/0x170 [ 92.132566] ? __lock_acquire+0x7f5/0x5140 [ 92.136803] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 92.141998] ? graph_lock+0x170/0x170 [ 92.145799] ? find_held_lock+0x36/0x1c0 [ 92.149855] ? graph_lock+0x170/0x170 [ 92.153650] ? find_held_lock+0x36/0x1c0 [ 92.157720] ? find_held_lock+0x36/0x1c0 [ 92.161793] ? find_held_lock+0x36/0x1c0 [ 92.166131] ? lock_downgrade+0x8e0/0x8e0 [ 92.170289] ? lock_release+0xa10/0xa10 [ 92.174480] ? check_same_owner+0x320/0x320 [ 92.178818] ? __might_sleep+0x95/0x190 [ 92.182897] ? native_load_gs_index+0x2d/0x30 [ 92.189835] ? __might_sleep+0x95/0x190 [ 92.193912] mm_release+0x3ec/0x540 [ 92.197547] ? mm_access+0x120/0x120 [ 92.201262] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 92.206281] ? trace_hardirqs_on+0xd/0x10 [ 92.210437] ? _raw_spin_unlock_irq+0x27/0x70 [ 92.215019] ? acct_collect+0x64f/0x7c0 [ 92.218997] ? trace_hardirqs_on+0xd/0x10 [ 92.223151] do_exit+0x4b5/0x22f0 [ 92.226616] ? mm_update_next_owner+0xbd0/0xbd0 [ 92.231303] ? print_usage_bug+0xc0/0xc0 [ 92.235368] ? free_unref_page+0x9d0/0x9d0 [ 92.239608] ? trace_hardirqs_on+0xd/0x10 [ 92.243767] ? kasan_check_write+0x14/0x20 [ 92.248105] ? finish_task_switch+0x59e/0x810 [ 92.252700] ? __lock_acquire+0x7f5/0x5140 [ 92.257030] ? lock_repin_lock+0x410/0x410 [ 92.261284] ? debug_check_no_locks_freed+0x310/0x310 [ 92.266481] ? pci_mmcfg_check_reserved+0x120/0x120 [ 92.271678] ? graph_lock+0x170/0x170 [ 92.275481] ? graph_lock+0x170/0x170 [ 92.279451] ? graph_lock+0x170/0x170 [ 92.283410] ? __mutex_lock+0x95d/0x17f0 [ 92.287479] ? graph_lock+0x170/0x170 [ 92.291300] ? find_held_lock+0x36/0x1c0 [ 92.295364] ? graph_lock+0x170/0x170 [ 92.299175] ? memset+0x31/0x40 [ 92.302656] ? find_held_lock+0x36/0x1c0 [ 92.306719] ? recalc_sigpending+0x6a/0x150 [ 92.311127] ? lock_downgrade+0x8e0/0x8e0 [ 92.315356] ? do_signal_stop+0x37a/0x8e0 [ 92.319506] do_group_exit+0x135/0x3b0 [ 92.323400] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 92.327978] ? __ia32_sys_exit+0x50/0x50 [ 92.332087] ? _raw_spin_unlock_irq+0x27/0x70 [ 92.336582] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 92.341595] get_signal+0x6a9/0x1480 [ 92.345307] ? ptrace_notify+0x110/0x110 [ 92.349360] ? kasan_check_write+0x14/0x20 [ 92.353595] ? ldsem_up_read+0x27/0x50 [ 92.357471] ? tty_ldisc_deref+0x30/0x40 [ 92.361647] ? kasan_check_read+0x11/0x20 [ 92.365791] ? rcu_is_watching+0x85/0x140 [ 92.371096] ? rcu_pm_notify+0xc0/0xc0 [ 92.374980] do_signal+0x98/0x2040 [ 92.378568] ? vfs_writev+0x1e9/0x320 [ 92.382357] ? setup_sigcontext+0x7d0/0x7d0 [ 92.386700] ? wait_for_completion+0x870/0x870 [ 92.391308] ? exit_to_usermode_loop+0x8a/0x2a0 [ 92.395990] exit_to_usermode_loop+0x1bf/0x2a0 [ 92.403095] ? vfs_writev+0x320/0x320 [ 92.406897] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 92.411762] do_syscall_64+0x573/0x6e0 [ 92.415657] ? finish_task_switch+0x1ca/0x810 [ 92.420234] ? syscall_return_slowpath+0x4c0/0x4c0 [ 92.425184] ? syscall_return_slowpath+0x20c/0x4c0 [ 92.430216] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 92.435619] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 92.440475] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 92.445661] RIP: 0033:0x455b59 [ 92.448844] RSP: 002b:00007f15bba38c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 92.456547] RAX: fffffffffffffe00 RBX: 00007f15bba396d4 RCX: 0000000000455b59 [ 92.463804] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 92.471070] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 92.478352] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 92.485643] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 92.858831] FAULT_INJECTION: forcing a failure. [ 92.858831] name failslab, interval 1, probability 0, space 0, times 0 [ 92.871419] CPU: 1 PID: 5983 Comm: syz-executor5 Not tainted 4.17.0-rc3-syzkaller #0 [ 92.879281] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 92.888635] Call Trace: [ 92.891218] dump_stack+0x162/0x21a [ 92.894836] ? dump_stack_print_info.cold.2+0x48/0x48 [ 92.900009] ? __lock_acquire+0x7f5/0x5140 [ 92.904228] should_fail.cold.4+0x5/0xd [ 92.908196] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 92.913283] ? lock_release+0xa10/0xa10 [ 92.917679] ? debug_check_no_locks_freed+0x310/0x310 [ 92.922866] ? __might_sleep+0x95/0x190 [ 92.926929] ? kasan_check_write+0x14/0x20 [ 92.931171] ? __mutex_lock+0x7d9/0x17f0 [ 92.935227] ? __lock_acquire+0x7f5/0x5140 [ 92.939449] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 92.944032] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 92.947806] FAULT_INJECTION: forcing a failure. [ 92.947806] name fail_futex, interval 1, probability 0, space 0, times 0 [ 92.948600] ? graph_lock+0x170/0x170 [ 92.948610] __should_failslab+0xba/0xf0 [ 92.948619] should_failslab+0x9/0x14 [ 92.971576] __kmalloc+0x63/0x760 [ 92.975017] ? __tty_buffer_request_room+0x27d/0x7d0 [ 92.980708] __tty_buffer_request_room+0x27d/0x7d0 [ 92.985617] ? flush_to_ldisc+0x650/0x650 [ 92.989745] ? lock_acquire+0x1dc/0x520 [ 92.993697] ? pty_write+0xcd/0x1d0 [ 92.997316] ? lock_release+0xa10/0xa10 [ 93.001272] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 93.006354] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 93.011791] tty_insert_flip_string_fixed_flag+0x78/0x200 [ 93.017318] ? kasan_check_write+0x14/0x20 [ 93.021549] ? do_raw_spin_lock+0xc1/0x200 [ 93.025761] pty_write+0x100/0x1d0 [ 93.029284] n_tty_write+0x964/0x1110 [ 93.033060] ? lock_downgrade+0x8e0/0x8e0 [ 93.037197] ? process_echoes+0x130/0x130 [ 93.041325] ? __might_sleep+0x95/0x190 [ 93.045278] ? __init_waitqueue_head+0x140/0x140 [ 93.050016] ? kasan_check_write+0x14/0x20 [ 93.054234] tty_write+0x346/0x770 [ 93.057755] ? process_echoes+0x130/0x130 [ 93.061916] do_iter_write+0x36b/0x550 [ 93.065792] ? dup_iter+0x250/0x250 [ 93.069409] vfs_writev+0x16b/0x320 [ 93.073020] ? vfs_iter_write+0xb0/0xb0 [ 93.076976] ? wait_for_completion+0x870/0x870 [ 93.081557] ? __fdget_pos+0x63/0x1b0 [ 93.085449] ? __fdget_raw+0x10/0x10 [ 93.089151] ? __sb_end_write+0x8a/0xb0 [ 93.093105] do_writev+0xf3/0x340 [ 93.097148] ? vfs_writev+0x320/0x320 [ 93.101116] __x64_sys_writev+0x70/0xb0 [ 93.105608] do_syscall_64+0x17b/0x6e0 [ 93.109477] ? syscall_return_slowpath+0x4c0/0x4c0 [ 93.114394] ? syscall_return_slowpath+0x20c/0x4c0 [ 93.119317] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 93.124678] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 93.129631] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 93.134805] RIP: 0033:0x455b59 [ 93.137974] RSP: 002b:00007f7244173c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 93.145671] RAX: ffffffffffffffda RBX: 00007f72441746d4 RCX: 0000000000455b59 [ 93.152925] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 93.160180] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 93.167430] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 93.174691] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 93.181957] CPU: 0 PID: 5978 Comm: syz-executor Not tainted 4.17.0-rc3-syzkaller #0 [ 93.181961] [ 93.181963] ====================================================== [ 93.181964] WARNING: possible circular locking dependency detected [ 93.181965] 4.17.0-rc3-syzkaller #0 Not tainted [ 93.181966] ------------------------------------------------------ [ 93.181967] syz-executor5/5983 is trying to acquire lock: [ 93.181969] (ptrval) (console_owner){-...}, at: console_unlock+0x417/0xf60 [ 93.181973] [ 93.181974] but task is already holding lock: [ 93.181974] (ptrval) (&(&port->lock)->rlock){-.-.}, at: pty_write+0xcd/0x1d0 [ 93.181978] [ 93.181979] which lock already depends on the new lock. [ 93.181980] [ 93.181980] [ 93.181982] the existing dependency chain (in reverse order) is: [ 93.181982] [ 93.181983] -> #2 (&(&port->lock)->rlock){-.-.}: [ 93.181987] _raw_spin_lock_irqsave+0x96/0xc0 [ 93.181988] tty_port_tty_get+0x1b/0x70 [ 93.181989] tty_port_default_wakeup+0xa/0x30 [ 93.181990] tty_port_tty_wakeup+0x58/0x70 [ 93.181991] uart_write_wakeup+0x37/0x50 [ 93.181993] serial8250_tx_chars+0x3d4/0x9c0 [ 93.181994] serial8250_handle_irq.part.25+0x157/0x1e0 [ 93.181995] serial8250_default_handle_irq+0x82/0xe0 [ 93.181996] serial8250_interrupt+0xd8/0x170 [ 93.181998] __handle_irq_event_percpu+0x185/0x8e0 [ 93.181999] handle_irq_event_percpu+0x8e/0x190 [ 93.182000] handle_irq_event+0xa2/0x130 [ 93.182001] handle_edge_irq+0x1c1/0x740 [ 93.182002] handle_irq+0x18c/0x2e7 [ 93.182003] do_IRQ+0x78/0x190 [ 93.182004] ret_from_intr+0x0/0x1e [ 93.182005] _raw_spin_unlock_irqrestore+0xa1/0xc0 [ 93.182006] uart_write+0x33b/0x530 [ 93.182007] n_tty_write+0x565/0x1110 [ 93.182008] tty_write+0x346/0x770 [ 93.182009] redirected_tty_write+0x9b/0xb0 [ 93.182010] __vfs_write+0xde/0xd10 [ 93.182011] vfs_write+0x155/0x480 [ 93.182012] ksys_write+0xef/0x240 [ 93.182013] __x64_sys_write+0x6e/0xb0 [ 93.182014] do_syscall_64+0x17b/0x6e0 [ 93.182015] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 93.182016] [ 93.182017] -> #1 (&port_lock_key){-.-.}: [ 93.182021] _raw_spin_lock_irqsave+0x96/0xc0 [ 93.182022] serial8250_console_write+0x781/0x9a0 [ 93.182023] univ8250_console_write+0x4e/0x70 [ 93.182025] console_unlock+0x864/0xf60 [ 93.182026] vprintk_emit+0x3a7/0xab0 [ 93.182027] vprintk_default+0x1a/0x20 [ 93.182028] vprintk_func+0x22/0x53 [ 93.182029] printk+0x91/0xab [ 93.182030] register_console+0x5e7/0x9a0 [ 93.182031] univ8250_console_init+0x1e/0x28 [ 93.182032] console_init+0x525/0x797 [ 93.182033] start_kernel+0x51c/0x7a0 [ 93.182034] x86_64_start_reservations+0x29/0x2b [ 93.182035] x86_64_start_kernel+0x76/0x79 [ 93.182036] secondary_startup_64+0xa5/0xb0 [ 93.182037] [ 93.182038] -> #0 (console_owner){-...}: [ 93.182042] lock_acquire+0x1dc/0x520 [ 93.182043] console_unlock+0x479/0xf60 [ 93.182044] vprintk_emit+0x3a7/0xab0 [ 93.182045] vprintk_default+0x1a/0x20 [ 93.182046] vprintk_func+0x22/0x53 [ 93.182047] printk+0x91/0xab [ 93.182048] should_fail+0x7e5/0x9e0 [ 93.182049] __should_failslab+0xba/0xf0 [ 93.182050] should_failslab+0x9/0x14 [ 93.182051] __kmalloc+0x63/0x760 [ 93.182052] __tty_buffer_request_room+0x27d/0x7d0 [ 93.182054] tty_insert_flip_string_fixed_flag+0x78/0x200 [ 93.182055] pty_write+0x100/0x1d0 [ 93.182056] n_tty_write+0x964/0x1110 [ 93.182057] tty_write+0x346/0x770 [ 93.182058] do_iter_write+0x36b/0x550 [ 93.182059] vfs_writev+0x16b/0x320 [ 93.182060] do_writev+0xf3/0x340 [ 93.182061] __x64_sys_writev+0x70/0xb0 [ 93.182062] do_syscall_64+0x17b/0x6e0 [ 93.182063] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 93.182064] [ 93.182065] other info that might help us debug this: [ 93.182066] [ 93.182067] Chain exists of: [ 93.182068] console_owner --> &port_lock_key --> &(&port->lock)->rlock [ 93.182073] [ 93.182074] Possible unsafe locking scenario: [ 93.182075] [ 93.182076] CPU0 CPU1 [ 93.182077] ---- ---- [ 93.182078] lock(&(&port->lock)->rlock); [ 93.182080] lock(&port_lock_key); [ 93.182083] lock(&(&port->lock)->rlock); [ 93.182085] lock(console_owner); [ 93.182088] [ 93.182088] *** DEADLOCK *** [ 93.182089] [ 93.182090] 6 locks held by syz-executor5/5983: [ 93.182091] #0: (ptrval) (&tty->ldisc_sem){++++}, at: ldsem_down_read+0x32/0x40 [ 93.182095] #1: (ptrval) (&tty->atomic_write_lock){+.+.}, at: tty_write_lock+0x2c/0x50 [ 93.182100] #2: (ptrval) (&tty->termios_rwsem){++++}, at: n_tty_write+0x22b/0x1110 [ 93.182105] #3: (ptrval) (&ldata->output_lock){+.+.}, at: n_tty_write+0x928/0x1110 [ 93.182109] #4: (ptrval) (&(&port->lock)->rlock){-.-.}, at: pty_write+0xcd/0x1d0 [ 93.182114] #5: (ptrval) (console_lock){+.+.}, at: vprintk_emit+0x39a/0xab0 [ 93.182119] [ 93.182120] stack backtrace: [ 93.182121] CPU: 1 PID: 5983 Comm: syz-executor5 Not tainted 4.17.0-rc3-syzkaller #0 [ 93.182123] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 93.182124] Call Trace: [ 93.182125] dump_stack+0x162/0x21a [ 93.182126] ? dump_stack_print_info.cold.2+0x48/0x48 [ 93.182127] ? print_lock+0xd1/0xd6 [ 93.182128] print_circular_bug.isra.36.cold.54+0x1bd/0x27d [ 93.182129] ? save_trace+0xe0/0x290 [ 93.182130] __lock_acquire+0x343e/0x5140 [ 93.182132] ? debug_check_no_locks_freed+0x310/0x310 [ 93.182133] ? __lock_acquire+0x29b6/0x5140 [ 93.182134] ? put_dec+0x1c/0xb0 [ 93.182135] ? number+0x775/0xa30 [ 93.182136] ? put_dec+0xb0/0xb0 [ 93.182137] ? format_decode+0x2d3/0x730 [ 93.182138] ? format_decode+0x730/0x730 [ 93.182139] ? set_precision+0xa0/0xa0 [ 93.182140] ? graph_lock+0x170/0x170 [ 93.182141] ? memcpy+0x45/0x50 [ 93.182142] lock_acquire+0x1dc/0x520 [ 93.182143] ? console_unlock+0x417/0xf60 [ 93.182144] ? lock_release+0xa10/0xa10 [ 93.182145] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 93.182146] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 93.182147] ? kasan_check_write+0x14/0x20 [ 93.182148] ? do_raw_spin_lock+0xc1/0x200 [ 93.182149] console_unlock+0x479/0xf60 [ 93.182151] ? console_unlock+0x417/0xf60 [ 93.182152] ? lock_acquire+0x1dc/0x520 [ 93.182153] ? vprintk_emit+0x39a/0xab0 [ 93.182154] ? wake_up_klogd+0xf0/0xf0 [ 93.182155] ? kasan_check_write+0x14/0x20 [ 93.182156] ? do_raw_spin_lock+0xc1/0x200 [ 93.182157] ? vprintk_emit+0x39a/0xab0 [ 93.182158] ? trace_hardirqs_off+0xd/0x10 [ 93.182160] ? _raw_spin_unlock_irqrestore+0x63/0xc0 [ 93.182161] ? vprintk_emit+0x39a/0xab0 [ 93.182162] ? __down_trylock_console_sem+0x104/0x190 [ 93.182163] ? vprintk_emit+0x39a/0xab0 [ 93.182164] vprintk_emit+0x3a7/0xab0 [ 93.182165] ? console_unlock+0xf60/0xf60 [ 93.182166] ? debug_check_no_locks_freed+0x310/0x310 [ 93.182167] ? finish_task_switch+0x1ca/0x810 [ 93.182168] ? finish_task_switch+0x182/0x810 [ 93.182169] ? print_usage_bug+0xc0/0xc0 [ 93.182171] ? lock_repin_lock+0x410/0x410 [ 93.182171] vprintk_default+0x1a/0x20 [ 93.182172] vprintk_func+0x22/0x53 [ 93.182174] printk+0x91/0xab [ 93.182175] ? kmsg_dump_rewind_nolock+0xdf/0xdf [ 93.182176] ? __lock_acquire+0x7f5/0x5140 [ 93.182177] should_fail+0x7e5/0x9e0 [ 93.182178] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 93.182179] ? lock_release+0xa10/0xa10 [ 93.182181] ? debug_check_no_locks_freed+0x310/0x310 [ 93.182182] ? __might_sleep+0x95/0x190 [ 93.182183] ? kasan_check_write+0x14/0x20 [ 93.182184] ? __mutex_lock+0x7d9/0x17f0 [ 93.182185] ? __lock_acquire+0x7f5/0x5140 [ 93.182186] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 93.182187] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 93.182188] ? graph_lock+0x170/0x170 [ 93.182189] __should_failslab+0xba/0xf0 [ 93.182190] should_failslab+0x9/0x14 [ 93.182191] __kmalloc+0x63/0x760 [ 93.182192] ? __tty_buffer_request_room+0x27d/0x7d0 [ 93.182194] __tty_buffer_request_room+0x27d/0x7d0 [ 93.182195] ? flush_to_ldisc+0x650/0x650 [ 93.182196] ? lock_acquire+0x1dc/0x520 [ 93.182197] ? pty_write+0xcd/0x1d0 [ 93.182198] ? lock_release+0xa10/0xa10 [ 93.182199] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 93.182200] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 93.182201] tty_insert_flip_string_fixed_flag+0x78/0x200 [ 93.182202] ? kasan_check_write+0x14/0x20 [ 93.182203] ? do_raw_spin_lock+0xc1/0x200 [ 93.182204] pty_write+0x100/0x1d0 [ 93.182205] n_tty_write+0x964/0x1110 [ 93.182206] ? lock_downgrade+0x8e0/0x8e0 [ 93.182207] ? process_echoes+0x130/0x130 [ 93.182208] ? __might_sleep+0x95/0x190 [ 93.182210] ? __init_waitqueue_head+0x140/0x140 [ 93.182211] ? kasan_check_write+0x14/0x20 [ 93.182212] tty_write+0x346/0x770 [ 93.182213] ? process_echoes+0x130/0x130 [ 93.182214] do_iter_write+0x36b/0x550 [ 93.182215] ? dup_iter+0x250/0x250 [ 93.182216] vfs_writev+0x16b/0x320 [ 93.182217] ? vfs_iter_write+0xb0/0xb0 [ 93.182218] ? wait_for_completion+0x870/0x870 [ 93.182219] ? __fdget_pos+0x63/0x1b0 [ 93.182220] ? __fdget_raw+0x10/0x10 [ 93.182221] ? __sb_end_write+0x8a/0xb0 [ 93.182222] do_writev+0xf3/0x340 [ 93.182223] ? vfs_writev+0x320/0x320 [ 93.182224] __x64_sys_writev+0x70/0xb0 [ 93.182225] do_syscall_64+0x17b/0x6e0 [ 93.182226] ? syscall_return_slowpath+0x4c0/0x4c0 [ 93.182227] ? syscall_return_slowpath+0x20c/0x4c0 [ 93.182228] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 93.182230] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 93.182231] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 93.182232] RIP: 0033:0x455b59 [ 93.182233] RSP: 002b:00007f7244173c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 93.182235] RAX: ffffffffffffffda RBX: 00007f72441746d4 RCX: 0000000000455b59 [ 93.182237] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 93.182238] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 93.182239] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 93.182240] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 93.183204] FAULT_INJECTION: forcing a failure. [ 93.183204] name fail_futex, interval 1, probability 0, space 0, times 0 [ 93.189758] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 93.189761] Call Trace: [ 93.189774] dump_stack+0x162/0x21a [ 93.189779] ? dump_stack_print_info.cold.2+0x48/0x48 [ 93.189787] should_fail.cold.4+0x5/0xd [ 93.189791] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 93.189800] ? debug_check_no_locks_freed+0x310/0x310 [ 93.189808] ? kasan_unpoison_shadow+0x35/0x50 [ 94.224293] ? kasan_alloc_pages+0x38/0x40 [ 94.228519] ? get_page_from_freelist+0x10ff/0x4f00 [ 94.233566] ? debug_check_no_locks_freed+0x310/0x310 [ 94.238759] ? print_usage_bug+0xc0/0xc0 [ 94.242809] get_futex_key+0x2c3/0x1d10 [ 94.246774] ? __isolate_free_page+0x7c0/0x7c0 [ 94.251347] ? futex_lock_pi_atomic+0x2a0/0x2a0 [ 94.256037] ? rb_erase_cached+0xc6a/0x32a0 [ 94.260339] ? debug_check_no_locks_freed+0x310/0x310 [ 94.265513] ? print_usage_bug+0xc0/0xc0 [ 94.270163] ? __lock_acquire+0x7f5/0x5140 [ 94.274401] ? __lock_acquire+0x7f5/0x5140 [ 94.278636] ? lock_acquire+0x1dc/0x520 [ 94.282591] ? percpu_ref_put_many+0x11a/0x230 [ 94.287152] ? lock_downgrade+0x8e0/0x8e0 [ 94.291302] ? lock_release+0xa10/0xa10 [ 94.295789] ? print_usage_bug+0xc0/0xc0 [ 94.299835] ? lock_acquire+0x1dc/0x520 [ 94.303802] ? debug_check_no_obj_freed+0x2ff/0x584 [ 94.308810] ? lock_downgrade+0x8e0/0x8e0 [ 94.312942] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 94.317416] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 94.321979] ? kasan_check_write+0x14/0x20 [ 94.326282] ? lock_acquire+0x1dc/0x520 [ 94.330234] ? __free_pages_ok+0xd23/0x2bd0 [ 94.334536] ? lock_downgrade+0x8e0/0x8e0 [ 94.338668] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 94.343227] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 94.347805] ? kasan_check_write+0x14/0x20 [ 94.352019] ? do_raw_spin_lock+0xc1/0x200 [ 94.356240] ? trace_hardirqs_on+0xd/0x10 [ 94.360394] ? update_load_avg+0x2d9/0x2570 [ 94.364710] futex_wake+0x15c/0x890 [ 94.368320] ? attach_entity_load_avg+0x850/0x850 [ 94.373236] ? __lock_acquire+0x7f5/0x5140 [ 94.377453] ? get_futex_key+0x1d10/0x1d10 [ 94.381669] ? graph_lock+0x170/0x170 [ 94.385447] ? graph_lock+0x170/0x170 [ 94.389235] ? __lock_acquire+0x7f5/0x5140 [ 94.393446] ? debug_check_no_locks_freed+0x310/0x310 [ 94.398614] ? debug_check_no_locks_freed+0x310/0x310 [ 94.403784] do_futex+0x890/0x2620 [ 94.407306] ? debug_check_no_locks_freed+0x310/0x310 [ 94.412563] ? debug_check_no_locks_freed+0x310/0x310 [ 94.417736] ? exit_robust_list+0x1b0/0x1b0 [ 94.422037] ? debug_check_no_locks_freed+0x310/0x310 [ 94.427224] ? attach_entity_load_avg+0x850/0x850 [ 94.432045] ? debug_check_no_locks_freed+0x310/0x310 [ 94.437219] ? task_numa_work+0xef0/0xef0 [ 94.441348] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 94.446608] ? graph_lock+0x170/0x170 [ 94.450392] ? lock_acquire+0x1dc/0x520 [ 94.454354] ? __delayacct_add_tsk+0x49d/0x650 [ 94.458918] ? lock_acquire+0x1dc/0x520 [ 94.462874] ? __might_fault+0xf1/0x1b0 [ 94.466828] ? lock_downgrade+0x8e0/0x8e0 [ 94.471128] ? lock_acquire+0x1dc/0x520 [ 94.475079] ? __might_fault+0xf1/0x1b0 [ 94.479033] ? lock_downgrade+0x8e0/0x8e0 [ 94.483178] ? trace_hardirqs_off+0xd/0x10 [ 94.487392] ? lock_release+0xa10/0xa10 [ 94.491346] ? check_same_owner+0x320/0x320 [ 94.495661] ? __might_sleep+0x95/0x190 [ 94.499616] ? __might_sleep+0x95/0x190 [ 94.503577] mm_release+0x3ec/0x540 [ 94.507183] ? mm_access+0x120/0x120 [ 94.510894] ? kasan_check_write+0x14/0x20 [ 94.515108] ? do_raw_spin_lock+0xc1/0x200 [ 94.519335] ? trace_hardirqs_on+0xd/0x10 [ 94.523463] ? _raw_spin_unlock_irq+0x27/0x70 [ 94.527941] ? acct_collect+0x64f/0x7c0 [ 94.531894] ? trace_hardirqs_on+0xd/0x10 [ 94.536022] do_exit+0x4b5/0x22f0 [ 94.539478] ? mm_update_next_owner+0xbd0/0xbd0 [ 94.544135] ? __free_pages+0x13e/0x180 [ 94.548089] ? free_unref_page+0x9d0/0x9d0 [ 94.552304] ? mod_zone_page_state+0xb5/0xe0 [ 94.556714] ? trace_hardirqs_on+0xd/0x10 [ 94.560849] ? kasan_check_write+0x14/0x20 [ 94.565064] ? finish_task_switch+0x59e/0x810 [ 94.569545] ? preempt_notifier_register+0x1e0/0x1e0 [ 94.574888] ? lock_repin_lock+0x410/0x410 [ 94.579104] ? debug_check_no_locks_freed+0x310/0x310 [ 94.584362] ? pci_mmcfg_check_reserved+0x120/0x120 [ 94.589360] ? graph_lock+0x170/0x170 [ 94.593140] ? graph_lock+0x170/0x170 [ 94.596922] ? graph_lock+0x170/0x170 [ 94.600715] ? __mutex_lock+0x95d/0x17f0 [ 94.604774] ? graph_lock+0x170/0x170 [ 94.608556] ? find_held_lock+0x36/0x1c0 [ 94.612596] ? schedule+0xef/0x430 [ 94.616127] ? lock_downgrade+0x8e0/0x8e0 [ 94.620253] ? __schedule+0x1e30/0x1e30 [ 94.624209] ? memset+0x31/0x40 [ 94.627473] ? __dequeue_signal+0x467/0x8e0 [ 94.632122] ? rcu_note_context_switch+0x710/0x710 [ 94.637032] ? lock_downgrade+0x8e0/0x8e0 [ 94.641159] ? __flush_itimer_signals+0x710/0x710 [ 94.645980] ? recalc_sigpending+0x6a/0x150 [ 94.650294] ? get_signal+0x704/0x1480 [ 94.654164] ? lock_downgrade+0x8e0/0x8e0 [ 94.658308] ? do_signal_stop+0x37a/0x8e0 [ 94.662457] do_group_exit+0x135/0x3b0 [ 94.666367] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 94.671454] ? __ia32_sys_exit+0x50/0x50 [ 94.675511] ? kasan_check_write+0x14/0x20 [ 94.679724] ? do_raw_spin_lock+0xc1/0x200 [ 94.683947] get_signal+0x6a9/0x1480 [ 94.687906] ? ptrace_notify+0x110/0x110 [ 94.691946] ? kasan_check_write+0x14/0x20 [ 94.696158] ? ldsem_up_read+0x27/0x50 [ 94.700024] ? tty_ldisc_deref+0x30/0x40 [ 94.704064] ? kasan_check_read+0x11/0x20 [ 94.708196] ? rcu_is_watching+0x85/0x140 [ 94.712324] ? rcu_pm_notify+0xc0/0xc0 [ 94.716196] do_signal+0x98/0x2040 [ 94.719723] ? vfs_writev+0x1e9/0x320 [ 94.723519] ? setup_sigcontext+0x7d0/0x7d0 [ 94.727831] ? wait_for_completion+0x870/0x870 [ 94.732422] ? exit_to_usermode_loop+0x8a/0x2a0 [ 94.737074] exit_to_usermode_loop+0x1bf/0x2a0 [ 94.741645] ? vfs_writev+0x320/0x320 [ 94.745424] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 94.750259] do_syscall_64+0x573/0x6e0 [ 94.754126] ? finish_task_switch+0x1ca/0x810 [ 94.758609] ? syscall_return_slowpath+0x4c0/0x4c0 [ 94.763519] ? syscall_return_slowpath+0x20c/0x4c0 [ 94.768430] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 94.773772] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 94.778593] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 94.783761] RIP: 0033:0x455b59 [ 94.786932] RSP: 002b:00007f4020685c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 94.794631] RAX: fffffffffffffe00 RBX: 00007f40206866d4 RCX: 0000000000455b59 [ 94.801883] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 94.809137] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 94.816388] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 94.823638] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 94.830900] CPU: 1 PID: 5979 Comm: syz-executor1 Not tainted 4.17.0-rc3-syzkaller #0 [ 94.832594] FAULT_INJECTION: forcing a failure. [ 94.832594] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 94.838784] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 94.838787] Call Trace: [ 94.838798] dump_stack+0x162/0x21a [ 94.838804] ? dump_stack_print_info.cold.2+0x48/0x48 [ 94.838812] should_fail.cold.4+0x5/0xd [ 94.838817] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 94.838823] ? __lock_acquire+0x7f5/0x5140 [ 94.838831] ? debug_check_no_locks_freed+0x310/0x310 [ 94.889871] ? print_usage_bug+0xc0/0xc0 [ 94.894522] ? __lock_acquire+0x7f5/0x5140 [ 94.898739] ? debug_check_no_locks_freed+0x310/0x310 [ 94.903911] ? check_noncircular+0x20/0x20 [ 94.908123] ? __lock_acquire+0x7f5/0x5140 [ 94.912339] get_futex_key+0x2c3/0x1d10 [ 94.916294] ? graph_lock+0x170/0x170 [ 94.920075] ? __lock_acquire+0x7f5/0x5140 [ 94.924300] ? futex_lock_pi_atomic+0x2a0/0x2a0 [ 94.928950] ? print_usage_bug+0xc0/0xc0 [ 94.933001] ? print_usage_bug+0xc0/0xc0 [ 94.941558] ? debug_check_no_locks_freed+0x310/0x310 [ 94.946742] ? print_usage_bug+0xc0/0xc0 [ 94.950793] ? lock_downgrade+0x8e0/0x8e0 [ 94.954920] ? __lock_acquire+0x7f5/0x5140 [ 94.959137] ? __lock_acquire+0x7f5/0x5140 [ 94.963354] ? lock_acquire+0x1dc/0x520 [ 94.967312] ? percpu_ref_put_many+0x11a/0x230 [ 94.971871] ? lock_downgrade+0x8e0/0x8e0 [ 94.976000] ? lock_release+0xa10/0xa10 [ 94.979967] ? print_usage_bug+0xc0/0xc0 [ 94.984010] ? lock_acquire+0x1dc/0x520 [ 94.987978] ? debug_check_no_obj_freed+0x2ff/0x584 [ 94.992972] ? lock_downgrade+0x8e0/0x8e0 [ 94.997099] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 95.001574] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 95.006136] ? kasan_check_write+0x14/0x20 [ 95.010350] ? lock_acquire+0x1dc/0x520 [ 95.014318] ? __free_pages_ok+0xd23/0x2bd0 [ 95.018619] ? lock_downgrade+0x8e0/0x8e0 [ 95.022748] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 95.027236] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 95.031809] ? kasan_check_write+0x14/0x20 [ 95.036042] ? do_raw_spin_lock+0xc1/0x200 [ 95.040285] ? trace_hardirqs_on+0xd/0x10 [ 95.044416] ? __update_load_avg_blocked_se.isra.33+0x460/0x460 [ 95.050462] futex_wake+0x15c/0x890 [ 95.054127] ? attach_entity_load_avg+0x850/0x850 [ 95.058978] ? __lock_acquire+0x7f5/0x5140 [ 95.063205] ? get_futex_key+0x1d10/0x1d10 [ 95.067424] ? graph_lock+0x170/0x170 [ 95.071210] ? debug_check_no_locks_freed+0x310/0x310 [ 95.077425] do_futex+0x890/0x2620 [ 95.080948] ? debug_check_no_locks_freed+0x310/0x310 [ 95.086119] ? debug_check_no_locks_freed+0x310/0x310 [ 95.091287] ? find_held_lock+0x36/0x1c0 [ 95.095338] ? exit_robust_list+0x1b0/0x1b0 [ 95.099648] ? graph_lock+0x170/0x170 [ 95.103427] ? debug_check_no_locks_freed+0x310/0x310 [ 95.108596] ? debug_check_no_locks_freed+0x310/0x310 [ 95.113775] ? __lock_is_held+0xb5/0x140 [ 95.117819] ? debug_check_no_locks_freed+0x310/0x310 [ 95.122987] ? lock_acquire+0x1dc/0x520 [ 95.126952] ? __delayacct_add_tsk+0x49d/0x650 [ 95.131526] ? lock_acquire+0x1dc/0x520 [ 95.135486] ? __might_fault+0xf1/0x1b0 [ 95.139440] ? lock_downgrade+0x8e0/0x8e0 [ 95.143567] ? lock_acquire+0x1dc/0x520 [ 95.147538] ? __might_fault+0xf1/0x1b0 [ 95.151489] ? lock_downgrade+0x8e0/0x8e0 [ 95.156135] ? trace_hardirqs_off+0xd/0x10 [ 95.160389] ? lock_release+0xa10/0xa10 [ 95.164348] ? check_same_owner+0x320/0x320 [ 95.170174] ? __might_sleep+0x95/0x190 [ 95.174604] ? __might_sleep+0x95/0x190 [ 95.178704] mm_release+0x3ec/0x540 [ 95.182337] ? mm_access+0x120/0x120 [ 95.186039] ? kasan_check_write+0x14/0x20 [ 95.190273] ? do_raw_spin_lock+0xc1/0x200 [ 95.194485] ? trace_hardirqs_on+0xd/0x10 [ 95.198613] ? _raw_spin_unlock_irq+0x27/0x70 [ 95.203090] ? acct_collect+0x64f/0x7c0 [ 95.207056] ? trace_hardirqs_on+0xd/0x10 [ 95.211200] do_exit+0x4b5/0x22f0 [ 95.214637] ? mm_update_next_owner+0xbd0/0xbd0 [ 95.219287] ? __free_pages+0x13e/0x180 [ 95.223346] ? free_unref_page+0x9d0/0x9d0 [ 95.227573] ? mod_zone_page_state+0xb5/0xe0 [ 95.231973] ? trace_hardirqs_on+0xd/0x10 [ 95.236205] ? kasan_check_write+0x14/0x20 [ 95.240448] ? finish_task_switch+0x59e/0x810 [ 95.244949] ? preempt_notifier_register+0x1e0/0x1e0 [ 95.250041] ? lock_repin_lock+0x410/0x410 [ 95.254258] ? debug_check_no_locks_freed+0x310/0x310 [ 95.259434] ? pci_mmcfg_check_reserved+0x120/0x120 [ 95.264515] ? graph_lock+0x170/0x170 [ 95.268297] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 95.272860] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 95.277944] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 95.282953] ? trace_hardirqs_on+0xd/0x10 [ 95.287092] ? find_held_lock+0x36/0x1c0 [ 95.291136] ? schedule+0xef/0x430 [ 95.294653] ? lock_downgrade+0x8e0/0x8e0 [ 95.298780] ? __schedule+0x1e30/0x1e30 [ 95.302738] ? memset+0x31/0x40 [ 95.305999] ? __dequeue_signal+0x467/0x8e0 [ 95.310340] ? rcu_note_context_switch+0x710/0x710 [ 95.315264] ? __flush_itimer_signals+0x710/0x710 [ 95.320084] ? recalc_sigpending+0x6a/0x150 [ 95.324394] ? get_signal+0x704/0x1480 [ 95.328258] ? lock_downgrade+0x8e0/0x8e0 [ 95.332382] ? do_signal_stop+0x37a/0x8e0 [ 95.336509] do_group_exit+0x135/0x3b0 [ 95.340408] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 95.344985] ? __ia32_sys_exit+0x50/0x50 [ 95.349051] ? kasan_check_write+0x14/0x20 [ 95.353295] ? do_raw_spin_lock+0xc1/0x200 [ 95.357552] get_signal+0x6a9/0x1480 [ 95.361278] ? ptrace_notify+0x110/0x110 [ 95.365324] ? kasan_check_write+0x14/0x20 [ 95.369556] ? ldsem_up_read+0x27/0x50 [ 95.373430] ? tty_ldisc_deref+0x30/0x40 [ 95.377484] ? kasan_check_read+0x11/0x20 [ 95.381980] ? rcu_is_watching+0x85/0x140 [ 95.386105] ? rcu_pm_notify+0xc0/0xc0 [ 95.389992] do_signal+0x98/0x2040 [ 95.393516] ? vfs_writev+0x1e9/0x320 [ 95.397294] ? setup_sigcontext+0x7d0/0x7d0 [ 95.401629] ? wait_for_completion+0x870/0x870 [ 95.406208] ? exit_to_usermode_loop+0x8a/0x2a0 [ 95.410881] exit_to_usermode_loop+0x1bf/0x2a0 [ 95.415451] ? vfs_writev+0x320/0x320 [ 95.419243] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 95.424067] do_syscall_64+0x573/0x6e0 [ 95.428453] ? syscall_return_slowpath+0x4c0/0x4c0 [ 95.433365] ? syscall_return_slowpath+0x20c/0x4c0 [ 95.438424] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 95.444203] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 95.449033] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 95.454203] RIP: 0033:0x455b59 [ 95.457379] RSP: 002b:00007f4f3cfeec68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 95.465082] RAX: fffffffffffffe00 RBX: 00007f4f3cfef6d4 RCX: 0000000000455b59 [ 95.472334] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 95.479589] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 95.486841] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 95.494094] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 95.501361] CPU: 0 PID: 5977 Comm: syz-executor4 Not tainted 4.17.0-rc3-syzkaller #0 [ 95.509258] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 95.518616] Call Trace: [ 95.522504] dump_stack+0x162/0x21a [ 95.526123] ? dump_stack_print_info.cold.2+0x48/0x48 [ 95.531311] should_fail.cold.4+0x5/0xd [ 95.535286] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 95.540381] ? lock_acquire+0x1dc/0x520 [ 95.544345] ? mem_cgroup_id_get_many+0x150/0x150 [ 95.549265] ? lock_release+0xa10/0xa10 [ 95.553232] ? print_usage_bug+0xc0/0xc0 [ 95.557282] ? __unlock_page_memcg+0x53/0x100 [ 95.561769] ? lock_downgrade+0x8e0/0x8e0 [ 95.565924] ? kasan_check_read+0x11/0x20 [ 95.570084] ? vma_kernel_pagesize+0x80/0x80 [ 95.574503] ? rcu_read_lock+0x70/0x70 [ 95.578397] __alloc_pages_nodemask+0x34e/0xd70 [ 95.583060] ? page_remove_rmap+0x4eb/0xe00 [ 95.587389] ? __alloc_pages_slowpath+0x2db0/0x2db0 [ 95.592400] ? lock_downgrade+0x8e0/0x8e0 [ 95.596547] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 95.601039] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 95.605535] FAULT_INJECTION: forcing a failure. [ 95.605535] name fail_futex, interval 1, probability 0, space 0, times 0 [ 95.605623] ? lock_acquire+0x1dc/0x520 [ 95.620986] ? lock_release+0xa10/0xa10 [ 95.624947] alloc_pages_current+0xd6/0x1b0 [ 95.629254] __get_free_pages+0xf/0x40 [ 95.633121] __tlb_remove_page_size+0x26b/0x4d0 [ 95.637770] unmap_page_range+0xc2c/0x1ff0 [ 95.642001] ? __activate_page+0x13b0/0x13b0 [ 95.646401] ? vm_normal_page_pmd+0x330/0x330 [ 95.650881] ? debug_check_no_locks_freed+0x310/0x310 [ 95.656068] ? __unwind_start+0x166/0x330 [ 95.660195] ? debug_check_no_locks_freed+0x310/0x310 [ 95.665384] ? debug_check_no_locks_freed+0x310/0x310 [ 95.670556] ? debug_check_no_locks_freed+0x310/0x310 [ 95.675727] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 95.680199] ? debug_check_no_locks_freed+0x310/0x310 [ 95.685375] ? debug_check_no_locks_freed+0x310/0x310 [ 95.690545] ? trace_hardirqs_on+0xd/0x10 [ 95.694673] ? debug_object_active_state+0x2e7/0x4e0 [ 95.699764] ? lock_acquire+0x1dc/0x520 [ 95.703719] ? pagevec_lru_move_fn+0x15e/0x230 [ 95.708281] ? lock_downgrade+0x8e0/0x8e0 [ 95.712518] ? uprobe_mmap+0xc10/0xc10 [ 95.716386] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 95.720946] ? do_raw_spin_lock+0xc1/0x200 [ 95.725161] unmap_single_vma+0x121/0x300 [ 95.729292] unmap_vmas+0xe2/0x190 [ 95.732816] exit_mmap+0x209/0x430 [ 95.736334] ? __ia32_sys_munmap+0x70/0x70 [ 95.740575] ? __khugepaged_exit+0x409/0x630 [ 95.744968] ? __might_sleep+0x95/0x190 [ 95.748924] mmput+0x1f4/0x550 [ 95.752099] ? lock_downgrade+0x8e0/0x8e0 [ 95.756235] ? set_mm_exe_file+0x1f0/0x1f0 [ 95.760468] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 95.764943] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 95.769520] ? kasan_check_write+0x14/0x20 [ 95.773734] ? do_raw_spin_lock+0xc1/0x200 [ 95.777950] do_exit+0xd0f/0x22f0 [ 95.781394] ? mm_update_next_owner+0xbd0/0xbd0 [ 95.786046] ? __free_pages+0x13e/0x180 [ 95.790087] ? free_unref_page+0x9d0/0x9d0 [ 95.794377] ? mod_zone_page_state+0xb5/0xe0 [ 95.798766] ? trace_hardirqs_on+0xd/0x10 [ 95.802892] ? kasan_check_write+0x14/0x20 [ 95.807109] ? finish_task_switch+0x59e/0x810 [ 95.811682] ? preempt_notifier_register+0x1e0/0x1e0 [ 95.816768] ? lock_repin_lock+0x410/0x410 [ 95.821003] ? pci_mmcfg_check_reserved+0x120/0x120 [ 95.826000] ? graph_lock+0x170/0x170 [ 95.829782] ? graph_lock+0x170/0x170 [ 95.833562] ? graph_lock+0x170/0x170 [ 95.837347] ? __mutex_lock+0x95d/0x17f0 [ 95.841470] ? graph_lock+0x170/0x170 [ 95.845263] ? find_held_lock+0x36/0x1c0 [ 95.849316] ? schedule+0xef/0x430 [ 95.852838] ? lock_downgrade+0x8e0/0x8e0 [ 95.856965] ? __schedule+0x1e30/0x1e30 [ 95.860922] ? memset+0x31/0x40 [ 95.864184] ? __dequeue_signal+0x467/0x8e0 [ 95.868486] ? rcu_note_context_switch+0x710/0x710 [ 95.873396] ? lock_downgrade+0x8e0/0x8e0 [ 95.877525] ? __flush_itimer_signals+0x710/0x710 [ 95.882351] ? recalc_sigpending+0x6a/0x150 [ 95.886744] ? get_signal+0x704/0x1480 [ 95.890623] ? lock_downgrade+0x8e0/0x8e0 [ 95.894750] ? do_signal_stop+0x37a/0x8e0 [ 95.898884] do_group_exit+0x135/0x3b0 [ 95.902754] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 95.907328] ? __ia32_sys_exit+0x50/0x50 [ 95.911373] ? kasan_check_write+0x14/0x20 [ 95.915586] ? do_raw_spin_lock+0xc1/0x200 [ 95.919820] get_signal+0x6a9/0x1480 [ 95.923534] ? ptrace_notify+0x110/0x110 [ 95.927582] ? kasan_check_write+0x14/0x20 [ 95.931959] ? ldsem_up_read+0x27/0x50 [ 95.936114] ? tty_ldisc_deref+0x30/0x40 [ 95.940275] ? kasan_check_read+0x11/0x20 [ 95.944405] ? rcu_is_watching+0x85/0x140 [ 95.948535] ? rcu_pm_notify+0xc0/0xc0 [ 95.952408] do_signal+0x98/0x2040 [ 95.955932] ? vfs_writev+0x1e9/0x320 [ 95.959723] ? setup_sigcontext+0x7d0/0x7d0 [ 95.964025] ? wait_for_completion+0x870/0x870 [ 95.968597] ? exit_to_usermode_loop+0x8a/0x2a0 [ 95.973247] exit_to_usermode_loop+0x1bf/0x2a0 [ 95.977812] ? vfs_writev+0x320/0x320 [ 95.981599] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 95.986424] do_syscall_64+0x573/0x6e0 [ 95.990297] ? syscall_return_slowpath+0x4c0/0x4c0 [ 95.995294] ? syscall_return_slowpath+0x20c/0x4c0 [ 96.000229] ? entry_SYSCALL_64_after_hwframe+0x59/0xbe [ 96.005593] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 96.010434] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 96.015606] RIP: 0033:0x455b59 [ 96.018790] RSP: 002b:00007f6347782c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 96.026492] RAX: fffffffffffffe00 RBX: 00007f63477836d4 RCX: 0000000000455b59 [ 96.033754] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 96.041018] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 96.048427] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 96.055711] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 96.062988] CPU: 1 PID: 5985 Comm: syz-executor2 Not tainted 4.17.0-rc3-syzkaller #0 [ 96.070886] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 96.080242] Call Trace: [ 96.082834] dump_stack+0x162/0x21a [ 96.086482] ? dump_stack_print_info.cold.2+0x48/0x48 [ 96.091677] should_fail.cold.4+0x5/0xd [ 96.095657] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 96.100771] ? rb_erase_cached+0xc6a/0x32a0 [ 96.105098] ? rb_next+0x140/0x140 [ 96.108647] ? debug_check_no_locks_freed+0x310/0x310 [ 96.114053] ? debug_check_no_locks_freed+0x310/0x310 [ 96.119252] get_futex_key+0x2c3/0x1d10 [ 96.123255] ? futex_lock_pi_atomic+0x2a0/0x2a0 [ 96.127956] ? rb_erase_cached+0xc6a/0x32a0 [ 96.132292] ? debug_check_no_locks_freed+0x310/0x310 [ 96.137485] ? lock_acquire+0x1dc/0x520 [ 96.141631] ? is_bpf_text_address+0x62/0xe0 [ 96.146040] ? lock_downgrade+0x8e0/0x8e0 [ 96.150298] ? lock_release+0xa10/0xa10 [ 96.154296] ? kasan_check_read+0x11/0x20 [ 96.158446] ? rcu_is_watching+0x85/0x140 [ 96.162597] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 96.167781] ? lock_acquire+0x1dc/0x520 [ 96.171767] ? percpu_ref_put_many+0x11a/0x230 [ 96.176339] ? lock_downgrade+0x8e0/0x8e0 [ 96.180479] ? lock_release+0xa10/0xa10 [ 96.184445] ? lock_acquire+0x1dc/0x520 [ 96.188437] ? debug_check_no_obj_freed+0x2ff/0x584 [ 96.196050] ? lock_downgrade+0x8e0/0x8e0 [ 96.200190] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 96.204776] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 96.209392] ? kasan_check_write+0x14/0x20 [ 96.213715] ? lock_acquire+0x1dc/0x520 [ 96.217770] ? __free_pages_ok+0xd23/0x2bd0 [ 96.222221] ? lock_downgrade+0x8e0/0x8e0 [ 96.226554] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 96.231390] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 96.237217] ? kasan_check_write+0x14/0x20 [ 96.241541] ? do_raw_spin_lock+0xc1/0x200 [ 96.245763] ? trace_hardirqs_on+0xd/0x10 [ 96.249902] ? __update_load_avg_blocked_se.isra.33+0x460/0x460 [ 96.255960] ? update_load_avg+0x2d9/0x2570 [ 96.260279] futex_wake+0x15c/0x890 [ 96.263897] ? attach_entity_load_avg+0x850/0x850 [ 96.268734] ? get_futex_key+0x1d10/0x1d10 [ 96.272955] ? cpuacct_css_alloc+0x160/0x160 [ 96.277382] ? debug_check_no_locks_freed+0x310/0x310 [ 96.282561] do_futex+0x890/0x2620 [ 96.286089] ? debug_check_no_locks_freed+0x310/0x310 [ 96.291270] ? debug_check_no_locks_freed+0x310/0x310 [ 96.296569] ? reweight_entity+0x10e0/0x10e0 [ 96.300969] ? exit_robust_list+0x1b0/0x1b0 [ 96.305291] ? debug_check_no_locks_freed+0x310/0x310 [ 96.310481] ? attach_entity_load_avg+0x850/0x850 [ 96.315785] ? debug_check_no_locks_freed+0x310/0x310 [ 96.321053] ? task_numa_work+0xef0/0xef0 [ 96.325294] ? cpuacct_css_alloc+0x160/0x160 [ 96.329697] ? pick_next_entity+0x390/0x390 [ 96.334024] ? lock_acquire+0x1dc/0x520 [ 96.337992] ? __delayacct_add_tsk+0x49d/0x650 [ 96.342566] ? lock_acquire+0x1dc/0x520 [ 96.345596] FAULT_INJECTION: forcing a failure. [ 96.345596] name failslab, interval 1, probability 0, space 0, times 0 [ 96.346544] ? __might_fault+0xf1/0x1b0 [ 96.361670] ? lock_downgrade+0x8e0/0x8e0 [ 96.365807] ? lock_acquire+0x1dc/0x520 [ 96.369794] ? __might_fault+0xf1/0x1b0 [ 96.373779] ? lock_downgrade+0x8e0/0x8e0 [ 96.377918] ? trace_hardirqs_off+0xd/0x10 [ 96.382138] ? lock_release+0xa10/0xa10 [ 96.386102] ? check_same_owner+0x320/0x320 [ 96.390497] ? __might_sleep+0x95/0x190 [ 96.394549] ? __might_sleep+0x95/0x190 [ 96.398702] mm_release+0x3ec/0x540 [ 96.402490] ? mm_access+0x120/0x120 [ 96.406193] ? kasan_check_write+0x14/0x20 [ 96.410417] ? do_raw_spin_lock+0xc1/0x200 [ 96.414718] ? trace_hardirqs_on+0xd/0x10 [ 96.418850] ? _raw_spin_unlock_irq+0x27/0x70 [ 96.423413] ? acct_collect+0x64f/0x7c0 [ 96.427367] ? trace_hardirqs_on+0xd/0x10 [ 96.431498] do_exit+0x4b5/0x22f0 [ 96.434936] ? mm_update_next_owner+0xbd0/0xbd0 [ 96.439586] ? __free_pages+0x13e/0x180 [ 96.443565] ? free_unref_page+0x9d0/0x9d0 [ 96.447873] ? mod_zone_page_state+0xb5/0xe0 [ 96.452288] ? trace_hardirqs_on+0xd/0x10 [ 96.456619] ? kasan_check_write+0x14/0x20 [ 96.460858] ? finish_task_switch+0x59e/0x810 [ 96.465337] ? preempt_notifier_register+0x1e0/0x1e0 [ 96.470441] ? kvm_sched_clock_read+0x9/0x20 [ 96.474829] ? lock_repin_lock+0x410/0x410 [ 96.479048] ? deactivate_task+0xf3/0x330 [ 96.483261] ? debug_check_no_locks_freed+0x310/0x310 [ 96.488460] ? pci_mmcfg_check_reserved+0x120/0x120 [ 96.493460] ? do_raw_spin_lock+0xc1/0x200 [ 96.497684] ? debug_check_no_locks_freed+0x310/0x310 [ 96.502855] ? _raw_spin_unlock+0x22/0x30 [ 96.506980] ? __mutex_lock+0x95d/0x17f0 [ 96.511033] ? tty_write_lock+0x2c/0x50 [ 96.516377] ? mutex_trylock+0x2a0/0x2a0 [ 96.520430] ? lock_acquire+0x1dc/0x520 [ 96.524384] ? remove_wait_queue+0x1a5/0x350 [ 96.528794] ? schedule+0xef/0x430 [ 96.532331] ? lock_downgrade+0x8e0/0x8e0 [ 96.536465] ? __schedule+0x1e30/0x1e30 [ 96.540512] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 96.544993] ? memset+0x31/0x40 [ 96.548262] ? __dequeue_signal+0x467/0x8e0 [ 96.552568] ? rcu_note_context_switch+0x710/0x710 [ 96.557503] ? lock_downgrade+0x8e0/0x8e0 [ 96.561630] ? __flush_itimer_signals+0x710/0x710 [ 96.566452] ? recalc_sigpending+0x6a/0x150 [ 96.570749] ? get_signal+0x704/0x1480 [ 96.574618] ? lock_downgrade+0x8e0/0x8e0 [ 96.578742] ? do_signal_stop+0x37a/0x8e0 [ 96.582877] do_group_exit+0x135/0x3b0 [ 96.586789] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 96.591880] ? __ia32_sys_exit+0x50/0x50 [ 96.595931] ? kasan_check_write+0x14/0x20 [ 96.600143] ? do_raw_spin_lock+0xc1/0x200 [ 96.604359] get_signal+0x6a9/0x1480 [ 96.608058] ? ptrace_notify+0x110/0x110 [ 96.612967] ? kasan_check_write+0x14/0x20 [ 96.617181] ? ldsem_up_read+0x27/0x50 [ 96.621056] ? tty_ldisc_deref+0x30/0x40 [ 96.625236] ? tty_write+0x423/0x770 [ 96.628934] ? process_echoes+0x130/0x130 [ 96.633849] ? do_iter_write+0x36b/0x550 [ 96.637895] ? dup_iter+0x250/0x250 [ 96.641512] do_signal+0x98/0x2040 [ 96.645036] ? vfs_writev+0x1e9/0x320 [ 96.648828] ? setup_sigcontext+0x7d0/0x7d0 [ 96.653132] ? wait_for_completion+0x870/0x870 [ 96.657710] ? check_same_owner+0x320/0x320 [ 96.662030] ? kasan_check_write+0x14/0x20 [ 96.666369] ? fput+0x18/0x120 [ 96.669560] exit_to_usermode_loop+0x1bf/0x2a0 [ 96.674124] ? vfs_writev+0x320/0x320 [ 96.677907] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 96.682729] do_syscall_64+0x573/0x6e0 [ 96.686690] ? finish_task_switch+0x1ca/0x810 [ 96.691516] ? finish_task_switch+0x182/0x810 [ 96.695994] ? syscall_return_slowpath+0x4c0/0x4c0 [ 96.701599] ? syscall_return_slowpath+0x20c/0x4c0 [ 96.706508] ? prepare_exit_to_usermode+0x2f0/0x2f0 [ 96.711515] ? prepare_exit_to_usermode+0x19e/0x2f0 [ 96.716519] ? perf_trace_sys_enter+0x10f0/0x10f0 [ 96.721343] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 96.726169] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 96.731339] RIP: 0033:0x455b59 [ 96.735213] RSP: 002b:00007f15bba38c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 96.742906] RAX: fffffffffffffe00 RBX: 00007f15bba396d4 RCX: 0000000000455b59 [ 96.750175] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 96.757523] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 96.764775] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 96.772024] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 96.780692] CPU: 0 PID: 6002 Comm: syz-executor3 Not tainted 4.17.0-rc3-syzkaller #0 [ 96.788598] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 96.798027] Call Trace: [ 96.800604] dump_stack+0x162/0x21a [ 96.804219] ? dump_stack_print_info.cold.2+0x48/0x48 [ 96.809410] ? pci_mmcfg_check_reserved+0x120/0x120 [ 96.814406] should_fail.cold.4+0x5/0xd [ 96.818380] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 96.823584] ? lock_release+0xa10/0xa10 [ 96.827691] ? rcu_note_context_switch+0x710/0x710 [ 96.832725] ? debug_check_no_locks_freed+0x310/0x310 [ 96.837909] ? __might_sleep+0x95/0x190 [ 96.841877] ? kasan_check_write+0x14/0x20 [ 96.846210] ? __mutex_lock+0x7d9/0x17f0 [ 96.850259] ? __mutex_lock+0x95d/0x17f0 [ 96.854302] ? n_tty_write+0x928/0x1110 [ 96.858258] ? debug_mutex_add_waiter+0x220/0x220 [ 96.863082] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 96.867569] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 96.872292] ? debug_mutex_wake_waiter+0x620/0x620 [ 96.877219] ? kasan_check_write+0x14/0x20 [ 96.881445] ? do_raw_spin_lock+0xc1/0x200 [ 96.885678] __should_failslab+0xba/0xf0 [ 96.889726] should_failslab+0x9/0x14 [ 96.893517] __kmalloc+0x63/0x760 [ 96.896979] ? __tty_buffer_request_room+0x27d/0x7d0 [ 96.902067] __tty_buffer_request_room+0x27d/0x7d0 [ 96.906984] ? flush_to_ldisc+0x650/0x650 [ 96.911114] ? lock_acquire+0x1dc/0x520 [ 96.915065] ? pty_write+0xcd/0x1d0 [ 96.918674] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 96.923149] ? lock_release+0xa10/0xa10 [ 96.927108] ? kasan_check_write+0x14/0x20 [ 96.931325] ? do_raw_spin_lock+0xc1/0x200 [ 96.935540] tty_insert_flip_string_fixed_flag+0x78/0x200 [ 96.941085] ? kasan_check_write+0x14/0x20 [ 96.946364] ? do_raw_spin_lock+0xc1/0x200 [ 96.950606] pty_write+0x100/0x1d0 [ 96.954135] n_tty_write+0x964/0x1110 [ 96.957946] ? lock_downgrade+0x8e0/0x8e0 [ 96.962176] ? process_echoes+0x130/0x130 [ 96.966318] ? __might_sleep+0x95/0x190 [ 96.970373] ? __init_waitqueue_head+0x140/0x140 [ 96.975118] ? kasan_check_write+0x14/0x20 [ 96.979338] tty_write+0x346/0x770 [ 96.982869] ? process_echoes+0x130/0x130 [ 96.987016] do_iter_write+0x36b/0x550 [ 96.990906] ? dup_iter+0x250/0x250 [ 96.994536] vfs_writev+0x16b/0x320 [ 96.998334] ? vfs_iter_write+0xb0/0xb0 [ 97.002391] ? wait_for_completion+0x870/0x870 [ 97.007160] ? check_same_owner+0x320/0x320 [ 97.011464] ? __fdget_pos+0x63/0x1b0 [ 97.015245] ? __fdget_raw+0x10/0x10 [ 97.019110] ? __sb_end_write+0x8a/0xb0 [ 97.023078] do_writev+0xf3/0x340 [ 97.026528] ? vfs_writev+0x320/0x320 [ 97.030583] __x64_sys_writev+0x70/0xb0 [ 97.034546] do_syscall_64+0x17b/0x6e0 [ 97.038884] ? finish_task_switch+0x1ca/0x810 [ 97.043365] ? finish_task_switch+0x182/0x810 [ 97.047844] ? syscall_return_slowpath+0x4c0/0x4c0 [ 97.052765] ? syscall_return_slowpath+0x20c/0x4c0 [ 97.057687] ? prepare_exit_to_usermode+0x2f0/0x2f0 [ 97.062714] ? prepare_exit_to_usermode+0x19e/0x2f0 [ 97.067729] ? perf_trace_sys_enter+0x10f0/0x10f0 [ 97.072572] ? trace_hardirqs_off_thunk+0x1a/0x1c 2019/11/25 02:23:48 executed programs: 62 [ 97.077496] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 97.082765] RIP: 0033:0x455b59 [ 97.086077] RSP: 002b:00007efee9daec68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 97.093774] RAX: ffffffffffffffda RBX: 00007efee9daf6d4 RCX: 0000000000455b59 [ 97.101057] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 97.108320] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 97.115593] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 97.122894] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 97.132542] FAULT_INJECTION: forcing a failure. [ 97.132542] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 97.144523] CPU: 1 PID: 6003 Comm: syz-executor Not tainted 4.17.0-rc3-syzkaller #0 [ 97.152314] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 97.161857] Call Trace: [ 97.164448] dump_stack+0x162/0x21a [ 97.168082] ? dump_stack_print_info.cold.2+0x48/0x48 [ 97.173279] ? lock_acquire+0x1dc/0x520 [ 97.177260] should_fail.cold.4+0x5/0xd [ 97.181225] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 97.186318] ? lock_acquire+0x1dc/0x520 [ 97.190283] ? mem_cgroup_id_get_many+0x150/0x150 [ 97.195127] ? lock_release+0xa10/0xa10 [ 97.199223] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 97.203720] ? __unlock_page_memcg+0x53/0x100 [ 97.208215] ? lock_downgrade+0x8e0/0x8e0 [ 97.212371] ? kasan_check_read+0x11/0x20 [ 97.216513] ? vma_kernel_pagesize+0x80/0x80 [ 97.220917] ? rcu_read_lock+0x70/0x70 [ 97.224797] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 97.229371] __alloc_pages_nodemask+0x34e/0xd70 [ 97.234040] ? page_remove_rmap+0x4eb/0xe00 [ 97.238367] ? __alloc_pages_slowpath+0x2db0/0x2db0 [ 97.243447] ? update_load_avg+0x2d9/0x2570 [ 97.247799] ? free_unref_page_commit.isra.91+0x5f0/0x5f0 [ 97.253695] ? lock_acquire+0x1dc/0x520 [ 97.257673] ? lock_release+0xa10/0xa10 [ 97.261661] alloc_pages_current+0xd6/0x1b0 [ 97.265991] __get_free_pages+0xf/0x40 [ 97.269867] __tlb_remove_page_size+0x26b/0x4d0 [ 97.274529] unmap_page_range+0xc2c/0x1ff0 [ 97.278765] ? __activate_page+0x13b0/0x13b0 [ 97.283162] ? vm_normal_page_pmd+0x330/0x330 [ 97.287692] ? kasan_check_read+0x11/0x20 [ 97.291828] ? rcu_is_watching+0x85/0x140 [ 97.296030] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 97.301221] ? is_bpf_text_address+0x81/0xe0 [ 97.305620] ? kernel_text_address+0x79/0xf0 [ 97.310019] ? unwind_get_return_address+0x61/0xa0 [ 97.314950] ? __save_stack_trace+0x7e/0xd0 [ 97.319275] ? save_stack+0xa9/0xd0 [ 97.322899] ? save_stack+0x43/0xd0 [ 97.326519] ? __kasan_slab_free+0x11a/0x170 [ 97.330934] ? kmem_cache_free+0x86/0x2d0 [ 97.335070] ? __khugepaged_exit+0x39a/0x630 [ 97.339464] ? mmput+0x429/0x550 [ 97.342827] ? lock_acquire+0x1dc/0x520 [ 97.346791] ? pagevec_lru_move_fn+0x15e/0x230 [ 97.351362] ? lock_downgrade+0x8e0/0x8e0 [ 97.355503] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 97.360017] ? uprobe_mmap+0xc10/0xc10 [ 97.363916] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 97.368501] ? do_raw_spin_lock+0xc1/0x200 [ 97.372728] unmap_single_vma+0x121/0x300 [ 97.376935] unmap_vmas+0xe2/0x190 [ 97.380484] exit_mmap+0x209/0x430 [ 97.384012] ? __ia32_sys_munmap+0x70/0x70 [ 97.388236] ? __khugepaged_exit+0x3a8/0x630 [ 97.392658] ? __might_sleep+0x95/0x190 [ 97.396722] mmput+0x1f4/0x550 [ 97.399921] ? lock_downgrade+0x8e0/0x8e0 [ 97.404157] ? set_mm_exe_file+0x1f0/0x1f0 [ 97.408664] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 97.413153] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 97.417724] ? kasan_check_write+0x14/0x20 [ 97.421955] ? do_raw_spin_lock+0xc1/0x200 [ 97.426178] do_exit+0xd0f/0x22f0 [ 97.429615] ? mm_update_next_owner+0xbd0/0xbd0 [ 97.434278] ? alloc_set_pte+0x7f8/0x17d0 [ 97.438406] ? debug_check_no_locks_freed+0x310/0x310 [ 97.443752] ? debug_check_no_locks_freed+0x310/0x310 [ 97.448936] ? debug_check_no_locks_freed+0x310/0x310 [ 97.454205] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 97.458789] ? debug_check_no_locks_freed+0x310/0x310 [ 97.463965] ? __mutex_lock+0x95d/0x17f0 [ 97.468012] ? lock_downgrade+0x8e0/0x8e0 [ 97.472161] ? debug_mutex_add_waiter+0x220/0x220 [ 97.476989] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 97.481806] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 97.486394] ? debug_mutex_wake_waiter+0x620/0x620 [ 97.491325] ? kasan_check_write+0x14/0x20 [ 97.495546] ? do_raw_spin_lock+0xc1/0x200 [ 97.499776] ? debug_check_no_locks_freed+0x310/0x310 [ 97.505074] ? _raw_spin_unlock+0x22/0x30 [ 97.509245] ? __mutex_lock+0x95d/0x17f0 [ 97.513293] ? tty_write_lock+0x2c/0x50 [ 97.517248] ? mutex_trylock+0x2a0/0x2a0 [ 97.521321] ? lock_acquire+0x1dc/0x520 [ 97.525276] ? remove_wait_queue+0x1a5/0x350 [ 97.529684] ? lock_downgrade+0x8e0/0x8e0 [ 97.533823] ? lock_downgrade+0x8e0/0x8e0 [ 97.537971] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 97.542457] ? memset+0x31/0x40 [ 97.545744] ? __dequeue_signal+0x467/0x8e0 [ 97.550060] ? __wake_up_common_lock+0x1c2/0x300 [ 97.554891] ? lock_downgrade+0x8e0/0x8e0 [ 97.559028] ? __flush_itimer_signals+0x710/0x710 [ 97.563866] ? recalc_sigpending+0x6a/0x150 [ 97.568187] ? get_signal+0x704/0x1480 [ 97.572058] ? lock_downgrade+0x8e0/0x8e0 [ 97.576195] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 97.580775] do_group_exit+0x135/0x3b0 [ 97.584649] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 97.589215] ? __ia32_sys_exit+0x50/0x50 [ 97.593260] ? kasan_check_write+0x14/0x20 [ 97.597550] ? do_raw_spin_lock+0xc1/0x200 [ 97.602230] get_signal+0x6a9/0x1480 [ 97.605931] ? ptrace_notify+0x110/0x110 [ 97.610048] ? kasan_check_write+0x14/0x20 [ 97.614336] ? ldsem_up_read+0x27/0x50 [ 97.618228] ? tty_ldisc_deref+0x30/0x40 [ 97.622268] ? tty_write+0x423/0x770 [ 97.626095] ? process_echoes+0x130/0x130 [ 97.630780] ? do_iter_write+0x36b/0x550 [ 97.634834] ? dup_iter+0x250/0x250 [ 97.638480] do_signal+0x98/0x2040 [ 97.642031] ? vfs_writev+0x1e9/0x320 [ 97.645832] ? setup_sigcontext+0x7d0/0x7d0 [ 97.650926] ? wait_for_completion+0x870/0x870 [ 97.655501] ? check_same_owner+0x320/0x320 [ 97.659825] ? kasan_check_write+0x14/0x20 [ 97.664069] ? fput+0x18/0x120 [ 97.667260] exit_to_usermode_loop+0x1bf/0x2a0 [ 97.672064] ? vfs_writev+0x320/0x320 [ 97.675875] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 97.680709] do_syscall_64+0x573/0x6e0 [ 97.684597] ? finish_task_switch+0x1ca/0x810 [ 97.689090] ? finish_task_switch+0x182/0x810 [ 97.693578] ? syscall_return_slowpath+0x4c0/0x4c0 [ 97.698505] ? syscall_return_slowpath+0x20c/0x4c0 [ 97.703418] ? prepare_exit_to_usermode+0x2f0/0x2f0 [ 97.708434] ? prepare_exit_to_usermode+0x19e/0x2f0 [ 97.713447] ? perf_trace_sys_enter+0x10f0/0x10f0 [ 97.718273] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 97.723115] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 97.728300] RIP: 0033:0x455b59 [ 97.731471] RSP: 002b:00007f4020685c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 97.739175] RAX: fffffffffffffe00 RBX: 00007f40206866d4 RCX: 0000000000455b59 [ 97.746430] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 97.753688] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 97.761033] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 97.768297] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 98.109852] FAULT_INJECTION: forcing a failure. [ 98.109852] name failslab, interval 1, probability 0, space 0, times 0 [ 98.121135] CPU: 1 PID: 6024 Comm: syz-executor4 Not tainted 4.17.0-rc3-syzkaller #0 [ 98.129009] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 98.138360] Call Trace: [ 98.140736] FAULT_INJECTION: forcing a failure. [ 98.140736] name fail_futex, interval 1, probability 0, space 0, times 0 [ 98.140947] dump_stack+0x162/0x21a [ 98.155910] ? dump_stack_print_info.cold.2+0x48/0x48 [ 98.161085] ? debug_check_no_locks_freed+0x310/0x310 [ 98.166255] ? reweight_entity+0x10e0/0x10e0 [ 98.170643] should_fail.cold.4+0x5/0xd [ 98.174599] ? update_curr+0x1f8/0xbe0 [ 98.178465] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 98.183546] ? debug_check_no_locks_freed+0x310/0x310 [ 98.188712] ? attach_entity_load_avg+0x850/0x850 [ 98.193558] ? debug_check_no_locks_freed+0x310/0x310 [ 98.198726] ? lock_release+0xa10/0xa10 [ 98.202682] ? task_numa_work+0xef0/0xef0 [ 98.206810] ? cpuacct_css_alloc+0x160/0x160 [ 98.211215] ? pick_next_entity+0x390/0x390 [ 98.215542] ? lock_acquire+0x1dc/0x520 [ 98.219500] ? fs_reclaim_acquire+0x20/0x20 [ 98.223803] ? lock_release+0xa10/0xa10 [ 98.227768] ? check_same_owner+0x320/0x320 [ 98.232070] ? lock_acquire+0x1dc/0x520 [ 98.236046] ? rcu_note_context_switch+0x710/0x710 [ 98.240961] ? lock_downgrade+0x8e0/0x8e0 [ 98.245103] __should_failslab+0xba/0xf0 [ 98.249155] should_failslab+0x9/0x14 [ 98.252961] kmem_cache_alloc+0x2af/0x760 [ 98.257092] ? do_exit+0x339/0x22f0 [ 98.260701] ? lock_downgrade+0x8e0/0x8e0 [ 98.264829] taskstats_exit+0x6fd/0x1040 [ 98.268869] ? lock_acquire+0x1dc/0x520 [ 98.272840] ? acct_collect+0x64f/0x7c0 [ 98.276811] ? taskstats_user_cmd+0x11d0/0x11d0 [ 98.281469] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 98.285943] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 98.290633] ? kasan_check_write+0x14/0x20 [ 98.294853] ? do_raw_spin_lock+0xc1/0x200 [ 98.299069] ? trace_hardirqs_on+0xd/0x10 [ 98.303312] ? _raw_spin_unlock_irq+0x27/0x70 [ 98.307812] ? acct_collect+0x64f/0x7c0 [ 98.311769] ? trace_hardirqs_on+0xd/0x10 [ 98.315901] do_exit+0x47a/0x22f0 [ 98.319353] ? finish_task_switch+0x1ca/0x810 [ 98.323852] ? mm_update_next_owner+0xbd0/0xbd0 [ 98.328664] ? pv_hash+0x1c0/0x1c0 [ 98.332228] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 98.336745] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 98.341336] ? compat_start_thread+0x80/0x80 [ 98.345734] ? dequeue_entity+0x15c0/0x15c0 [ 98.350042] ? trace_hardirqs_on+0xd/0x10 [ 98.354291] ? _raw_spin_unlock_irq+0x27/0x70 [ 98.358799] ? finish_task_switch+0x1ca/0x810 [ 98.363365] ? finish_task_switch+0x182/0x810 [ 98.367845] ? preempt_notifier_register+0x1e0/0x1e0 [ 98.373091] ? kvm_sched_clock_read+0x9/0x20 [ 98.377600] ? lock_repin_lock+0x410/0x410 [ 98.381935] ? deactivate_task+0xf3/0x330 [ 98.386084] ? debug_check_no_locks_freed+0x310/0x310 [ 98.391288] ? pci_mmcfg_check_reserved+0x120/0x120 [ 98.396312] ? do_raw_spin_lock+0xc1/0x200 [ 98.400572] ? debug_check_no_locks_freed+0x310/0x310 [ 98.405758] ? _raw_spin_unlock+0x22/0x30 [ 98.409903] ? __mutex_lock+0x95d/0x17f0 [ 98.414070] ? tty_write_lock+0x2c/0x50 [ 98.418051] ? mutex_trylock+0x2a0/0x2a0 [ 98.422115] ? lock_acquire+0x1dc/0x520 [ 98.426099] ? remove_wait_queue+0x1a5/0x350 [ 98.430495] ? schedule+0xef/0x430 [ 98.434037] ? lock_downgrade+0x8e0/0x8e0 [ 98.438208] ? __schedule+0x1e30/0x1e30 [ 98.442184] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 98.446682] ? memset+0x31/0x40 [ 98.449947] ? __dequeue_signal+0x467/0x8e0 [ 98.454265] ? rcu_note_context_switch+0x710/0x710 [ 98.459199] ? lock_downgrade+0x8e0/0x8e0 [ 98.463335] ? __flush_itimer_signals+0x710/0x710 [ 98.468278] ? recalc_sigpending+0x6a/0x150 [ 98.472586] ? get_signal+0x704/0x1480 [ 98.476457] ? lock_downgrade+0x8e0/0x8e0 [ 98.480601] ? do_signal_stop+0x37a/0x8e0 [ 98.485958] do_group_exit+0x135/0x3b0 [ 98.489846] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 98.494427] ? __ia32_sys_exit+0x50/0x50 [ 98.501356] ? do_raw_spin_lock+0x1a7/0x200 [ 98.506651] get_signal+0x6a9/0x1480 [ 98.510451] ? ptrace_notify+0x110/0x110 [ 98.514499] ? kasan_check_write+0x14/0x20 [ 98.518729] ? ldsem_up_read+0x27/0x50 [ 98.522619] ? tty_ldisc_deref+0x30/0x40 [ 98.526672] ? tty_write+0x423/0x770 [ 98.530375] ? process_echoes+0x130/0x130 [ 98.535138] ? do_iter_write+0x36b/0x550 [ 98.539190] ? dup_iter+0x250/0x250 [ 98.542806] do_signal+0x98/0x2040 [ 98.546661] ? vfs_writev+0x1e9/0x320 [ 98.550827] ? setup_sigcontext+0x7d0/0x7d0 [ 98.555141] ? wait_for_completion+0x870/0x870 [ 98.559721] ? check_same_owner+0x320/0x320 [ 98.564373] ? kasan_check_write+0x14/0x20 [ 98.568595] ? fput+0x18/0x120 [ 98.571773] exit_to_usermode_loop+0x1bf/0x2a0 [ 98.576339] ? vfs_writev+0x320/0x320 [ 98.580125] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 98.584959] do_syscall_64+0x573/0x6e0 [ 98.588826] ? finish_task_switch+0x28b/0x810 [ 98.594194] ? syscall_return_slowpath+0x4c0/0x4c0 [ 98.599112] ? syscall_return_slowpath+0x20c/0x4c0 [ 98.604214] ? prepare_exit_to_usermode+0x2f0/0x2f0 [ 98.609913] ? prepare_exit_to_usermode+0x19e/0x2f0 [ 98.615371] ? perf_trace_sys_enter+0x10f0/0x10f0 [ 98.620203] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 98.625033] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 98.630207] RIP: 0033:0x455b59 [ 98.633394] RSP: 002b:00007f6347782c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 98.641083] RAX: fffffffffffffe00 RBX: 00007f63477836d4 RCX: 0000000000455b59 [ 98.648345] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 98.656219] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 98.663483] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 98.670733] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 98.677996] CPU: 0 PID: 6027 Comm: syz-executor5 Not tainted 4.17.0-rc3-syzkaller #0 [ 98.679237] FAULT_INJECTION: forcing a failure. [ 98.679237] name fail_futex, interval 1, probability 0, space 0, times 0 [ 98.685899] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 98.685903] Call Trace: [ 98.685918] dump_stack+0x162/0x21a [ 98.685923] ? dump_stack_print_info.cold.2+0x48/0x48 [ 98.685931] should_fail.cold.4+0x5/0xd [ 98.685936] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 98.685948] ? debug_check_no_locks_freed+0x310/0x310 [ 98.732449] ? debug_check_no_locks_freed+0x310/0x310 [ 98.737629] ? debug_check_no_locks_freed+0x310/0x310 [ 98.742944] ? update_blocked_averages+0x1750/0x1750 [ 98.748056] ? task_prio+0x50/0x50 [ 98.751586] get_futex_key+0x2c3/0x1d10 [ 98.755544] ? update_sd_lb_stats+0x44e/0x2c30 [ 98.760108] ? futex_lock_pi_atomic+0x2a0/0x2a0 [ 98.764771] ? rb_erase_cached+0xc6a/0x32a0 [ 98.769073] ? rb_next+0x140/0x140 [ 98.772597] ? update_group_capacity+0xd20/0xd20 [ 98.777348] ? attach_entity_load_avg+0x850/0x850 [ 98.782173] ? lock_release+0xa10/0xa10 [ 98.786149] ? debug_check_no_locks_freed+0x310/0x310 [ 98.791329] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 98.796506] ? kernel_text_address+0x79/0xf0 [ 98.800897] ? __unwind_start+0x166/0x330 [ 98.805114] ? debug_check_no_locks_freed+0x310/0x310 [ 98.810299] ? find_busiest_group+0xf8/0x1c60 [ 98.814776] ? update_load_avg+0x2d9/0x2570 [ 98.819076] ? debug_check_no_locks_freed+0x310/0x310 [ 98.824248] ? save_stack+0x43/0xd0 [ 98.827877] ? update_sd_lb_stats+0x2c30/0x2c30 [ 98.833142] ? attach_entity_load_avg+0x850/0x850 [ 98.838055] ? walk_component+0x815/0x2630 [ 98.842290] ? link_path_walk+0x58c/0x1900 [ 98.846876] ? path_openat+0x1f5/0x4870 [ 98.850858] ? do_filp_open+0x227/0x340 [ 98.854827] ? do_sys_open+0x3cc/0x690 [ 98.858717] ? debug_check_no_locks_freed+0x310/0x310 [ 98.863894] ? percpu_ref_put_many+0x11a/0x230 [ 98.868485] ? debug_check_no_locks_freed+0x310/0x310 [ 98.873773] ? __update_load_avg_blocked_se.isra.33+0x460/0x460 [ 98.879961] ? __update_load_avg_blocked_se.isra.33+0x460/0x460 [ 98.886795] ? debug_check_no_locks_freed+0x310/0x310 [ 98.892159] ? load_balance+0x62f/0x3580 [ 98.896346] ? update_load_avg+0x2d9/0x2570 [ 98.900654] ? update_load_avg+0x2d9/0x2570 [ 98.904968] futex_wake+0x15c/0x890 [ 98.908599] ? attach_entity_load_avg+0x850/0x850 [ 98.913432] ? find_busiest_group+0x1c60/0x1c60 [ 98.918098] ? get_futex_key+0x1d10/0x1d10 [ 98.922338] ? debug_check_no_locks_freed+0x310/0x310 [ 98.927651] ? debug_check_no_locks_freed+0x310/0x310 [ 98.932945] do_futex+0x890/0x2620 [ 98.936490] ? debug_check_no_locks_freed+0x310/0x310 [ 98.941684] ? debug_check_no_locks_freed+0x310/0x310 [ 98.946858] ? reweight_entity+0x10e0/0x10e0 [ 98.951627] ? exit_robust_list+0x1b0/0x1b0 [ 98.955951] ? debug_check_no_locks_freed+0x310/0x310 [ 98.961153] ? attach_entity_load_avg+0x850/0x850 [ 98.965988] ? debug_check_no_locks_freed+0x310/0x310 [ 98.971425] ? task_numa_work+0xef0/0xef0 [ 98.975556] ? cpuacct_css_alloc+0x160/0x160 [ 98.979956] ? pick_next_entity+0x390/0x390 [ 98.984381] ? lock_acquire+0x1dc/0x520 [ 98.988353] ? __delayacct_add_tsk+0x49d/0x650 [ 98.992921] ? lock_acquire+0x1dc/0x520 [ 98.996878] ? __might_fault+0xf1/0x1b0 [ 99.000928] ? lock_downgrade+0x8e0/0x8e0 [ 99.005066] ? lock_acquire+0x1dc/0x520 [ 99.009024] ? __might_fault+0xf1/0x1b0 [ 99.013040] ? lock_downgrade+0x8e0/0x8e0 [ 99.017180] ? trace_hardirqs_off+0xd/0x10 [ 99.021417] ? lock_release+0xa10/0xa10 [ 99.025495] ? check_same_owner+0x320/0x320 [ 99.029916] ? __might_sleep+0x95/0x190 [ 99.033879] ? __might_sleep+0x95/0x190 [ 99.037860] mm_release+0x3ec/0x540 [ 99.041471] ? mm_access+0x120/0x120 [ 99.045184] ? kasan_check_write+0x14/0x20 [ 99.049399] ? do_raw_spin_lock+0xc1/0x200 [ 99.053617] ? trace_hardirqs_on+0xd/0x10 [ 99.057746] ? _raw_spin_unlock_irq+0x27/0x70 [ 99.062222] ? acct_collect+0x64f/0x7c0 [ 99.066185] ? trace_hardirqs_on+0xd/0x10 [ 99.070356] do_exit+0x4b5/0x22f0 [ 99.073811] ? finish_task_switch+0x1ca/0x810 [ 99.078293] ? lock_downgrade+0x8e0/0x8e0 [ 99.082508] ? finish_task_switch+0x182/0x810 [ 99.086987] ? mm_update_next_owner+0xbd0/0xbd0 [ 99.091729] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 99.096245] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 99.100807] ? compat_start_thread+0x80/0x80 [ 99.105208] ? dequeue_entity+0x15c0/0x15c0 [ 99.109511] ? trace_hardirqs_on+0xd/0x10 [ 99.113649] ? _raw_spin_unlock_irq+0x27/0x70 [ 99.118129] ? finish_task_switch+0x1ca/0x810 [ 99.123509] ? finish_task_switch+0x182/0x810 [ 99.127985] ? preempt_notifier_register+0x1e0/0x1e0 [ 99.133069] ? kvm_sched_clock_read+0x9/0x20 [ 99.137465] ? lock_repin_lock+0x410/0x410 [ 99.141689] ? deactivate_task+0xf3/0x330 [ 99.145852] ? debug_check_no_locks_freed+0x310/0x310 [ 99.151055] ? pci_mmcfg_check_reserved+0x120/0x120 [ 99.156059] ? do_raw_spin_lock+0xc1/0x200 [ 99.160397] ? debug_check_no_locks_freed+0x310/0x310 [ 99.165587] ? _raw_spin_unlock+0x22/0x30 [ 99.169720] ? __mutex_lock+0x95d/0x17f0 [ 99.173781] ? tty_write_lock+0x2c/0x50 [ 99.177735] ? mutex_trylock+0x2a0/0x2a0 [ 99.181776] ? lock_acquire+0x1dc/0x520 [ 99.185729] ? remove_wait_queue+0x1a5/0x350 [ 99.190120] ? schedule+0xef/0x430 [ 99.193647] ? lock_downgrade+0x8e0/0x8e0 [ 99.197783] ? __schedule+0x1e30/0x1e30 [ 99.201735] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 99.206212] ? memset+0x31/0x40 [ 99.209474] ? __dequeue_signal+0x467/0x8e0 [ 99.213806] ? rcu_note_context_switch+0x710/0x710 [ 99.218723] ? lock_downgrade+0x8e0/0x8e0 [ 99.222859] ? __flush_itimer_signals+0x710/0x710 [ 99.228149] ? recalc_sigpending+0x6a/0x150 [ 99.232457] ? get_signal+0x704/0x1480 [ 99.236324] ? lock_downgrade+0x8e0/0x8e0 [ 99.240452] ? do_signal_stop+0x37a/0x8e0 [ 99.244583] do_group_exit+0x135/0x3b0 [ 99.248451] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 99.253023] ? __ia32_sys_exit+0x50/0x50 [ 99.257062] ? kasan_check_write+0x14/0x20 [ 99.261295] ? do_raw_spin_lock+0xc1/0x200 [ 99.265510] get_signal+0x6a9/0x1480 [ 99.269209] ? ptrace_notify+0x110/0x110 [ 99.273296] ? kasan_check_write+0x14/0x20 [ 99.277511] ? ldsem_up_read+0x27/0x50 [ 99.281378] ? tty_ldisc_deref+0x30/0x40 [ 99.285429] ? tty_write+0x423/0x770 [ 99.289122] ? process_echoes+0x130/0x130 [ 99.293260] ? do_iter_write+0x36b/0x550 [ 99.297303] ? dup_iter+0x250/0x250 [ 99.300914] do_signal+0x98/0x2040 [ 99.305157] ? vfs_writev+0x1e9/0x320 [ 99.308946] ? setup_sigcontext+0x7d0/0x7d0 [ 99.313335] ? wait_for_completion+0x870/0x870 [ 99.317900] ? check_same_owner+0x320/0x320 [ 99.322213] ? kasan_check_write+0x14/0x20 [ 99.326437] ? fput+0x18/0x120 [ 99.329632] exit_to_usermode_loop+0x1bf/0x2a0 [ 99.334193] ? vfs_writev+0x320/0x320 [ 99.337995] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 99.342820] do_syscall_64+0x573/0x6e0 [ 99.346693] ? finish_task_switch+0x1ca/0x810 [ 99.351168] ? finish_task_switch+0x182/0x810 [ 99.355740] ? syscall_return_slowpath+0x4c0/0x4c0 [ 99.360656] ? syscall_return_slowpath+0x20c/0x4c0 [ 99.365585] ? prepare_exit_to_usermode+0x2f0/0x2f0 [ 99.370600] ? prepare_exit_to_usermode+0x19e/0x2f0 [ 99.375603] ? perf_trace_sys_enter+0x10f0/0x10f0 [ 99.380430] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 99.385256] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 99.390424] RIP: 0033:0x455b59 [ 99.393608] RSP: 002b:00007f7244173c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 99.401299] RAX: fffffffffffffe00 RBX: 00007f72441746d4 RCX: 0000000000455b59 [ 99.408550] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 99.415800] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 99.423058] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 99.430310] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 99.437580] CPU: 1 PID: 6030 Comm: syz-executor1 Not tainted 4.17.0-rc3-syzkaller #0 [ 99.443392] FAULT_INJECTION: forcing a failure. [ 99.443392] name fail_futex, interval 1, probability 0, space 0, times 0 [ 99.445465] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 99.445468] Call Trace: [ 99.445481] dump_stack+0x162/0x21a [ 99.445487] ? dump_stack_print_info.cold.2+0x48/0x48 [ 99.445495] should_fail.cold.4+0x5/0xd [ 99.445502] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 99.486652] ? debug_check_no_locks_freed+0x310/0x310 [ 99.491910] ? debug_check_no_locks_freed+0x310/0x310 [ 99.497095] ? debug_check_no_locks_freed+0x310/0x310 [ 99.502267] ? debug_check_no_locks_freed+0x310/0x310 [ 99.507455] get_futex_key+0x2c3/0x1d10 [ 99.511411] ? futex_lock_pi_atomic+0x2a0/0x2a0 [ 99.516058] ? rb_erase_cached+0xc6a/0x32a0 [ 99.520372] ? debug_check_no_locks_freed+0x310/0x310 [ 99.525549] ? lock_acquire+0x1dc/0x520 [ 99.529505] ? is_bpf_text_address+0x62/0xe0 [ 99.533891] ? lock_downgrade+0x8e0/0x8e0 [ 99.538025] ? debug_check_no_locks_freed+0x310/0x310 [ 99.543192] ? lock_release+0xa10/0xa10 [ 99.547147] ? kasan_check_read+0x11/0x20 [ 99.551272] ? rcu_is_watching+0x85/0x140 [ 99.555409] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 99.560587] ? lock_acquire+0x1dc/0x520 [ 99.564537] ? percpu_ref_put_many+0x11a/0x230 [ 99.569123] ? lock_downgrade+0x8e0/0x8e0 [ 99.573261] ? lock_release+0xa10/0xa10 [ 99.577227] ? debug_check_no_locks_freed+0x310/0x310 [ 99.582400] ? lock_acquire+0x1dc/0x520 [ 99.586354] ? debug_check_no_obj_freed+0x2ff/0x584 [ 99.591434] ? lock_downgrade+0x8e0/0x8e0 [ 99.595563] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 99.600038] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 99.604681] ? kasan_check_write+0x14/0x20 [ 99.608894] ? lock_acquire+0x1dc/0x520 [ 99.612847] ? __free_pages_ok+0xd23/0x2bd0 [ 99.617147] ? lock_downgrade+0x8e0/0x8e0 [ 99.621277] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 99.625749] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 99.630324] ? kasan_check_write+0x14/0x20 [ 99.634555] ? do_raw_spin_lock+0xc1/0x200 [ 99.638808] ? trace_hardirqs_on+0xd/0x10 [ 99.642947] ? tg_unthrottle_up+0x220/0x220 [ 99.647261] ? kasan_check_write+0x14/0x20 [ 99.651483] ? update_load_avg+0x2d9/0x2570 [ 99.655919] futex_wake+0x15c/0x890 [ 99.659708] ? attach_entity_load_avg+0x850/0x850 [ 99.664535] ? get_futex_key+0x1d10/0x1d10 [ 99.668759] ? cpuacct_css_alloc+0x160/0x160 [ 99.673148] ? debug_check_no_locks_freed+0x310/0x310 [ 99.678337] ? debug_check_no_locks_freed+0x310/0x310 [ 99.683505] do_futex+0x890/0x2620 [ 99.687025] ? debug_check_no_locks_freed+0x310/0x310 [ 99.692194] ? debug_check_no_locks_freed+0x310/0x310 [ 99.697371] ? reweight_entity+0x10e0/0x10e0 [ 99.701767] ? exit_robust_list+0x1b0/0x1b0 [ 99.706069] ? debug_check_no_locks_freed+0x310/0x310 [ 99.711238] ? attach_entity_load_avg+0x850/0x850 [ 99.716071] ? debug_check_no_locks_freed+0x310/0x310 [ 99.721249] ? task_numa_work+0xef0/0xef0 [ 99.725377] ? cpuacct_css_alloc+0x160/0x160 [ 99.729761] ? pick_next_entity+0x390/0x390 [ 99.734757] ? lock_acquire+0x1dc/0x520 [ 99.738721] ? __delayacct_add_tsk+0x49d/0x650 [ 99.743284] ? lock_acquire+0x1dc/0x520 [ 99.747238] ? __might_fault+0xf1/0x1b0 [ 99.751201] ? lock_downgrade+0x8e0/0x8e0 [ 99.755328] ? lock_acquire+0x1dc/0x520 [ 99.759279] ? __might_fault+0xf1/0x1b0 [ 99.763239] ? lock_downgrade+0x8e0/0x8e0 [ 99.767363] ? trace_hardirqs_off+0xd/0x10 [ 99.771573] ? lock_release+0xa10/0xa10 [ 99.775526] ? check_same_owner+0x320/0x320 [ 99.779832] ? __might_sleep+0x95/0x190 [ 99.783787] ? __might_sleep+0x95/0x190 [ 99.787742] mm_release+0x3ec/0x540 [ 99.791356] ? mm_access+0x120/0x120 [ 99.795062] ? kasan_check_write+0x14/0x20 [ 99.799274] ? do_raw_spin_lock+0xc1/0x200 [ 99.803491] ? trace_hardirqs_on+0xd/0x10 [ 99.807619] ? _raw_spin_unlock_irq+0x27/0x70 [ 99.812092] ? acct_collect+0x64f/0x7c0 [ 99.816047] ? trace_hardirqs_on+0xd/0x10 [ 99.820183] do_exit+0x4b5/0x22f0 [ 99.823628] ? mm_update_next_owner+0xbd0/0xbd0 [ 99.828277] ? __free_pages+0x13e/0x180 [ 99.832314] ? free_unref_page+0x9d0/0x9d0 [ 99.836613] ? mod_zone_page_state+0xb5/0xe0 [ 99.841015] ? trace_hardirqs_on+0xd/0x10 [ 99.845155] ? kasan_check_write+0x14/0x20 [ 99.849374] ? finish_task_switch+0x59e/0x810 [ 99.853852] ? preempt_notifier_register+0x1e0/0x1e0 [ 99.858945] ? kvm_sched_clock_read+0x9/0x20 [ 99.863418] ? lock_repin_lock+0x410/0x410 [ 99.867633] ? deactivate_task+0xf3/0x330 [ 99.871761] ? debug_check_no_locks_freed+0x310/0x310 [ 99.876933] ? pci_mmcfg_check_reserved+0x120/0x120 [ 99.881927] ? do_raw_spin_lock+0xc1/0x200 [ 99.886160] ? debug_check_no_locks_freed+0x310/0x310 [ 99.891424] ? _raw_spin_unlock+0x22/0x30 [ 99.895559] ? __mutex_lock+0x95d/0x17f0 [ 99.899612] ? tty_write_lock+0x2c/0x50 [ 99.903579] ? mutex_trylock+0x2a0/0x2a0 [ 99.907619] ? lock_acquire+0x1dc/0x520 [ 99.911582] ? remove_wait_queue+0x1a5/0x350 [ 99.915980] ? schedule+0xef/0x430 [ 99.919499] ? lock_downgrade+0x8e0/0x8e0 [ 99.923626] ? __schedule+0x1e30/0x1e30 [ 99.927580] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 99.932063] ? memset+0x31/0x40 [ 99.935322] ? __dequeue_signal+0x467/0x8e0 [ 99.940143] ? rcu_note_context_switch+0x710/0x710 [ 99.945058] ? lock_downgrade+0x8e0/0x8e0 [ 99.949186] ? __flush_itimer_signals+0x710/0x710 [ 99.954019] ? recalc_sigpending+0x6a/0x150 [ 99.958330] ? get_signal+0x704/0x1480 [ 99.962215] ? lock_downgrade+0x8e0/0x8e0 [ 99.966966] ? do_signal_stop+0x37a/0x8e0 [ 99.971135] do_group_exit+0x135/0x3b0 [ 99.975015] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 99.979580] ? __ia32_sys_exit+0x50/0x50 [ 99.983630] ? kasan_check_write+0x14/0x20 [ 99.987877] ? do_raw_spin_lock+0xc1/0x200 [ 99.992206] get_signal+0x6a9/0x1480 [ 99.995910] ? ptrace_notify+0x110/0x110 [ 100.000131] ? kasan_check_write+0x14/0x20 [ 100.004432] ? ldsem_up_read+0x27/0x50 [ 100.008296] ? tty_ldisc_deref+0x30/0x40 [ 100.012361] ? tty_write+0x423/0x770 [ 100.016063] ? process_echoes+0x130/0x130 [ 100.020201] ? do_iter_write+0x36b/0x550 [ 100.024251] ? dup_iter+0x250/0x250 [ 100.027866] do_signal+0x98/0x2040 [ 100.031400] ? vfs_writev+0x1e9/0x320 [ 100.035196] ? setup_sigcontext+0x7d0/0x7d0 [ 100.039497] ? wait_for_completion+0x870/0x870 [ 100.044168] ? check_same_owner+0x320/0x320 [ 100.048476] ? kasan_check_write+0x14/0x20 [ 100.052701] ? fput+0x18/0x120 [ 100.055875] exit_to_usermode_loop+0x1bf/0x2a0 [ 100.060436] ? vfs_writev+0x320/0x320 [ 100.064229] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 100.069069] do_syscall_64+0x573/0x6e0 [ 100.072936] ? finish_task_switch+0x28b/0x810 [ 100.077456] ? syscall_return_slowpath+0x4c0/0x4c0 [ 100.082383] ? syscall_return_slowpath+0x20c/0x4c0 [ 100.087311] ? prepare_exit_to_usermode+0x2f0/0x2f0 [ 100.092316] ? prepare_exit_to_usermode+0x19e/0x2f0 [ 100.097313] ? perf_trace_sys_enter+0x10f0/0x10f0 [ 100.102140] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 100.106985] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 100.112159] RIP: 0033:0x455b59 [ 100.115467] RSP: 002b:00007f4f3cfeec68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 100.123171] RAX: fffffffffffffe00 RBX: 00007f4f3cfef6d4 RCX: 0000000000455b59 [ 100.130537] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 100.137792] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 100.145045] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 100.152302] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 100.159838] CPU: 0 PID: 6025 Comm: syz-executor2 Not tainted 4.17.0-rc3-syzkaller #0 [ 100.167724] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 100.177075] Call Trace: [ 100.179663] dump_stack+0x162/0x21a [ 100.183289] ? dump_stack_print_info.cold.2+0x48/0x48 [ 100.189098] should_fail.cold.4+0x5/0xd [ 100.193100] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 100.198207] ? debug_check_no_locks_freed+0x310/0x310 [ 100.203407] ? debug_check_no_locks_freed+0x310/0x310 [ 100.210245] ? kasan_unpoison_shadow+0x35/0x50 [ 100.214929] ? kasan_alloc_pages+0x38/0x40 [ 100.219300] ? get_page_from_freelist+0x10ff/0x4f00 [ 100.224330] ? debug_check_no_locks_freed+0x310/0x310 [ 100.229525] ? update_blocked_averages+0x1750/0x1750 [ 100.234644] ? task_prio+0x50/0x50 [ 100.238314] get_futex_key+0x2c3/0x1d10 [ 100.242301] ? update_sd_lb_stats+0x44e/0x2c30 [ 100.246903] ? __isolate_free_page+0x7c0/0x7c0 [ 100.251582] ? futex_lock_pi_atomic+0x2a0/0x2a0 [ 100.256263] ? update_group_capacity+0xd20/0xd20 [ 100.261136] ? attach_entity_load_avg+0x850/0x850 [ 100.265896] FAULT_INJECTION: forcing a failure. [ 100.265896] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 100.265977] ? lock_release+0xa10/0xa10 [ 100.281727] ? debug_check_no_locks_freed+0x310/0x310 [ 100.286897] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 100.292512] ? kernel_text_address+0x79/0xf0 [ 100.298590] ? __unwind_start+0x166/0x330 [ 100.303251] ? debug_check_no_locks_freed+0x310/0x310 [ 100.308425] ? find_busiest_group+0xf8/0x1c60 [ 100.312908] ? update_load_avg+0x2d9/0x2570 [ 100.317736] ? debug_check_no_locks_freed+0x310/0x310 [ 100.323013] ? save_stack+0x43/0xd0 [ 100.326624] ? update_sd_lb_stats+0x2c30/0x2c30 [ 100.331295] ? attach_entity_load_avg+0x850/0x850 [ 100.336476] ? walk_component+0x815/0x2630 [ 100.340691] ? link_path_walk+0x58c/0x1900 [ 100.344901] ? path_openat+0x1f5/0x4870 [ 100.348852] ? do_filp_open+0x227/0x340 [ 100.352821] ? do_sys_open+0x3cc/0x690 [ 100.356884] ? debug_check_no_locks_freed+0x310/0x310 [ 100.362063] ? percpu_ref_put_many+0x11a/0x230 [ 100.366638] ? debug_check_no_locks_freed+0x310/0x310 [ 100.371807] ? __update_load_avg_blocked_se.isra.33+0x460/0x460 [ 100.377843] ? debug_check_no_locks_freed+0x310/0x310 [ 100.383021] ? load_balance+0x62f/0x3580 [ 100.387091] ? update_load_avg+0x2d9/0x2570 [ 100.391394] futex_wake+0x15c/0x890 [ 100.395005] ? attach_entity_load_avg+0x850/0x850 [ 100.399842] ? find_busiest_group+0x1c60/0x1c60 [ 100.404490] ? get_futex_key+0x1d10/0x1d10 [ 100.408714] ? debug_check_no_locks_freed+0x310/0x310 [ 100.413884] ? debug_check_no_locks_freed+0x310/0x310 [ 100.419057] do_futex+0x890/0x2620 [ 100.422583] ? debug_check_no_locks_freed+0x310/0x310 [ 100.427761] ? debug_check_no_locks_freed+0x310/0x310 [ 100.432930] ? reweight_entity+0x10e0/0x10e0 [ 100.437329] ? exit_robust_list+0x1b0/0x1b0 [ 100.442411] ? debug_check_no_locks_freed+0x310/0x310 [ 100.447581] ? lock_downgrade+0x8e0/0x8e0 [ 100.451709] ? debug_check_no_locks_freed+0x310/0x310 [ 100.456884] ? cpuacct_charge+0x302/0x5b0 [ 100.461101] ? cpuacct_css_alloc+0x160/0x160 [ 100.465491] ? kasan_check_write+0x14/0x20 [ 100.469707] ? debug_check_no_locks_freed+0x310/0x310 [ 100.475034] ? update_curr+0x1f8/0xbe0 [ 100.478941] ? lock_acquire+0x1dc/0x520 [ 100.482900] ? __delayacct_add_tsk+0x49d/0x650 [ 100.487475] ? lock_acquire+0x1dc/0x520 [ 100.491430] ? __might_fault+0xf1/0x1b0 [ 100.495386] ? lock_downgrade+0x8e0/0x8e0 [ 100.499526] ? lock_acquire+0x1dc/0x520 [ 100.503487] ? __might_fault+0xf1/0x1b0 [ 100.507443] ? lock_downgrade+0x8e0/0x8e0 [ 100.511576] ? trace_hardirqs_off+0xd/0x10 [ 100.516308] ? lock_release+0xa10/0xa10 [ 100.520262] ? check_same_owner+0x320/0x320 [ 100.524559] ? __might_sleep+0x95/0x190 [ 100.528520] ? __might_sleep+0x95/0x190 [ 100.532479] mm_release+0x3ec/0x540 [ 100.536085] ? mm_access+0x120/0x120 [ 100.539788] ? kasan_check_write+0x14/0x20 [ 100.544003] ? do_raw_spin_lock+0xc1/0x200 [ 100.548651] ? trace_hardirqs_on+0xd/0x10 [ 100.552776] ? _raw_spin_unlock_irq+0x27/0x70 [ 100.557259] ? acct_collect+0x64f/0x7c0 [ 100.561218] ? trace_hardirqs_on+0xd/0x10 [ 100.565346] do_exit+0x4b5/0x22f0 [ 100.568779] ? finish_task_switch+0x1ca/0x810 [ 100.573253] ? lock_downgrade+0x8e0/0x8e0 [ 100.577377] ? finish_task_switch+0x182/0x810 [ 100.581854] ? mm_update_next_owner+0xbd0/0xbd0 [ 100.586605] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 100.591084] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 100.595645] ? compat_start_thread+0x80/0x80 [ 100.600031] ? cpu_load_update_active+0x2b0/0x2b0 [ 100.604853] ? trace_hardirqs_on+0xd/0x10 [ 100.609064] ? _raw_spin_unlock_irq+0x27/0x70 [ 100.613537] ? finish_task_switch+0x1ca/0x810 [ 100.618020] ? finish_task_switch+0x182/0x810 [ 100.622494] ? preempt_notifier_register+0x1e0/0x1e0 [ 100.627841] ? kvm_sched_clock_read+0x9/0x20 [ 100.632234] ? lock_repin_lock+0x410/0x410 [ 100.636457] ? debug_check_no_locks_freed+0x310/0x310 [ 100.641626] ? __wake_up_common_lock+0x1c2/0x300 [ 100.646362] ? pci_mmcfg_check_reserved+0x120/0x120 [ 100.651795] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 100.656292] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 100.660872] ? kasan_check_write+0x14/0x20 [ 100.665091] ? trace_hardirqs_on+0xd/0x10 [ 100.669250] ? do_notify_parent_cldstop+0x64f/0xb50 [ 100.674254] ? send_signal+0xa0/0xa0 [ 100.677959] ? schedule+0xef/0x430 [ 100.681478] ? lock_downgrade+0x8e0/0x8e0 [ 100.685603] ? __schedule+0x1e30/0x1e30 [ 100.689555] ? memset+0x31/0x40 [ 100.692810] ? __dequeue_signal+0x467/0x8e0 [ 100.697112] ? rcu_note_context_switch+0x710/0x710 [ 100.702034] ? __flush_itimer_signals+0x710/0x710 [ 100.706855] ? recalc_sigpending+0x6a/0x150 [ 100.711168] ? get_signal+0x704/0x1480 [ 100.715036] ? lock_downgrade+0x8e0/0x8e0 [ 100.719170] ? do_signal_stop+0x37a/0x8e0 [ 100.726858] do_group_exit+0x135/0x3b0 [ 100.730735] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 100.735293] ? __ia32_sys_exit+0x50/0x50 [ 100.739331] ? kasan_check_write+0x14/0x20 [ 100.743543] ? do_raw_spin_lock+0xc1/0x200 [ 100.747757] get_signal+0x6a9/0x1480 [ 100.751452] ? ptrace_notify+0x110/0x110 [ 100.755506] ? __schedule+0x809/0x1e30 [ 100.759373] ? tty_write+0x423/0x770 [ 100.763078] ? pci_mmcfg_check_reserved+0x120/0x120 [ 100.768075] ? do_iter_write+0x36b/0x550 [ 100.772377] ? dup_iter+0x250/0x250 [ 100.775987] do_signal+0x98/0x2040 [ 100.781453] ? vfs_writev+0x1e9/0x320 [ 100.785233] ? setup_sigcontext+0x7d0/0x7d0 [ 100.789621] ? wait_for_completion+0x870/0x870 [ 100.794187] ? check_same_owner+0x320/0x320 [ 100.798492] ? schedule+0xef/0x430 [ 100.802023] ? __schedule+0x1e30/0x1e30 [ 100.805984] ? kasan_check_write+0x14/0x20 [ 100.810199] ? fput+0x18/0x120 [ 100.813461] exit_to_usermode_loop+0x1bf/0x2a0 [ 100.818110] ? vfs_writev+0x320/0x320 [ 100.821891] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 100.826715] do_syscall_64+0x573/0x6e0 [ 100.830583] ? finish_task_switch+0x1ca/0x810 [ 100.835056] ? finish_task_switch+0x182/0x810 [ 100.839532] ? syscall_return_slowpath+0x4c0/0x4c0 [ 100.844440] ? syscall_return_slowpath+0x20c/0x4c0 [ 100.849371] ? prepare_exit_to_usermode+0x2f0/0x2f0 [ 100.854368] ? prepare_exit_to_usermode+0x19e/0x2f0 [ 100.859362] ? perf_trace_sys_enter+0x10f0/0x10f0 [ 100.864185] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 100.869016] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 100.874185] RIP: 0033:0x455b59 [ 100.877367] RSP: 002b:00007f15bba38c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 100.885077] RAX: fffffffffffffe00 RBX: 00007f15bba396d4 RCX: 0000000000455b59 [ 100.892416] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 100.899676] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 100.906926] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 100.914196] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 100.921458] CPU: 1 PID: 6032 Comm: syz-executor3 Not tainted 4.17.0-rc3-syzkaller #0 [ 100.929351] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 100.938708] Call Trace: [ 100.941328] dump_stack+0x162/0x21a [ 100.944991] ? dump_stack_print_info.cold.2+0x48/0x48 [ 100.950176] ? lock_acquire+0x1dc/0x520 [ 100.954148] should_fail.cold.4+0x5/0xd [ 100.958111] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 100.963209] ? lock_acquire+0x1dc/0x520 [ 100.967175] ? mem_cgroup_id_get_many+0x150/0x150 [ 100.972011] ? lock_release+0xa10/0xa10 [ 100.976679] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 100.981169] ? __unlock_page_memcg+0x53/0x100 [ 100.985651] ? lock_downgrade+0x8e0/0x8e0 [ 100.989777] ? lock_acquire+0x1dc/0x520 [ 100.993734] ? kasan_check_read+0x11/0x20 [ 100.997865] ? vma_kernel_pagesize+0x80/0x80 [ 101.002258] ? rcu_read_lock+0x70/0x70 [ 101.006135] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 101.010077] FAULT_INJECTION: forcing a failure. [ 101.010077] name failslab, interval 1, probability 0, space 0, times 0 [ 101.010709] __alloc_pages_nodemask+0x34e/0xd70 [ 101.026529] ? page_remove_rmap+0x4eb/0xe00 [ 101.030831] ? __alloc_pages_slowpath+0x2db0/0x2db0 [ 101.035830] ? update_load_avg+0x2d9/0x2570 [ 101.040171] ? free_unref_page_commit.isra.91+0x5f0/0x5f0 [ 101.045700] ? lock_acquire+0x1dc/0x520 [ 101.049663] ? lock_release+0xa10/0xa10 [ 101.053621] alloc_pages_current+0xd6/0x1b0 [ 101.057924] __get_free_pages+0xf/0x40 [ 101.061930] __tlb_remove_page_size+0x26b/0x4d0 [ 101.066609] unmap_page_range+0xc2c/0x1ff0 [ 101.070834] ? vm_normal_page_pmd+0x330/0x330 [ 101.075312] ? kasan_check_read+0x11/0x20 [ 101.079441] ? rcu_is_watching+0x85/0x140 [ 101.083570] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 101.088740] ? kernel_text_address+0x79/0xf0 [ 101.093129] ? is_bpf_text_address+0x81/0xe0 [ 101.097650] ? kernel_text_address+0x79/0xf0 [ 101.102055] ? __unwind_start+0x166/0x330 [ 101.106191] ? unwind_get_return_address+0x61/0xa0 [ 101.111103] ? __save_stack_trace+0x7e/0xd0 [ 101.115406] ? save_stack+0xa9/0xd0 [ 101.119012] ? save_stack+0x43/0xd0 [ 101.122620] ? __kasan_slab_free+0x11a/0x170 [ 101.127011] ? kmem_cache_free+0x86/0x2d0 [ 101.131150] ? __khugepaged_exit+0x39a/0x630 [ 101.135627] ? mmput+0x429/0x550 [ 101.138985] ? do_exit+0xd0f/0x22f0 [ 101.142593] ? do_group_exit+0x135/0x3b0 [ 101.146636] ? get_signal+0x6a9/0x1480 [ 101.150519] ? do_signal+0x98/0x2040 [ 101.154300] ? exit_to_usermode_loop+0x1bf/0x2a0 [ 101.159036] ? do_syscall_64+0x573/0x6e0 [ 101.163082] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 101.168459] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 101.172956] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 101.177522] ? kasan_check_write+0x14/0x20 [ 101.182090] ? do_raw_spin_lock+0xc1/0x200 [ 101.186344] ? uprobe_mmap+0xc10/0xc10 [ 101.190220] ? trace_hardirqs_off+0xd/0x10 [ 101.194446] ? _raw_spin_unlock_irqrestore+0x63/0xc0 [ 101.199532] ? debug_check_no_obj_freed+0x2ff/0x584 [ 101.204534] unmap_single_vma+0x121/0x300 [ 101.208666] unmap_vmas+0xe2/0x190 [ 101.212190] exit_mmap+0x209/0x430 [ 101.215711] ? __ia32_sys_munmap+0x70/0x70 [ 101.219927] ? __khugepaged_exit+0x3a8/0x630 [ 101.224321] ? __might_sleep+0x95/0x190 [ 101.228300] mmput+0x1f4/0x550 [ 101.231486] ? lock_downgrade+0x8e0/0x8e0 [ 101.235635] ? set_mm_exe_file+0x1f0/0x1f0 [ 101.239853] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 101.244326] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 101.248890] ? kasan_check_write+0x14/0x20 [ 101.253107] ? do_raw_spin_lock+0xc1/0x200 [ 101.257325] do_exit+0xd0f/0x22f0 [ 101.260763] ? mm_update_next_owner+0xbd0/0xbd0 [ 101.265586] ? alloc_set_pte+0x7f8/0x17d0 [ 101.269713] ? debug_check_no_locks_freed+0x310/0x310 [ 101.274881] ? debug_check_no_locks_freed+0x310/0x310 [ 101.280069] ? debug_check_no_locks_freed+0x310/0x310 [ 101.285240] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 101.289801] ? debug_check_no_locks_freed+0x310/0x310 [ 101.294974] ? __mutex_lock+0x95d/0x17f0 [ 101.299148] ? lock_downgrade+0x8e0/0x8e0 [ 101.303291] ? debug_mutex_add_waiter+0x220/0x220 [ 101.308753] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 101.313370] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 101.317955] ? debug_mutex_wake_waiter+0x620/0x620 [ 101.322888] ? kasan_check_write+0x14/0x20 [ 101.327101] ? do_raw_spin_lock+0xc1/0x200 [ 101.331317] ? debug_check_no_locks_freed+0x310/0x310 [ 101.336493] ? _raw_spin_unlock+0x22/0x30 [ 101.340621] ? __mutex_lock+0x95d/0x17f0 [ 101.344687] ? tty_write_lock+0x2c/0x50 [ 101.348658] ? mutex_trylock+0x2a0/0x2a0 [ 101.352701] ? lock_acquire+0x1dc/0x520 [ 101.356653] ? remove_wait_queue+0x1a5/0x350 [ 101.361037] ? lock_downgrade+0x8e0/0x8e0 [ 101.365169] ? lock_downgrade+0x8e0/0x8e0 [ 101.369305] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 101.373780] ? memset+0x31/0x40 [ 101.377042] ? __dequeue_signal+0x467/0x8e0 [ 101.381349] ? __wake_up_common_lock+0x1c2/0x300 [ 101.386085] ? lock_downgrade+0x8e0/0x8e0 [ 101.390226] ? __flush_itimer_signals+0x710/0x710 [ 101.395050] ? recalc_sigpending+0x6a/0x150 [ 101.399349] ? get_signal+0x704/0x1480 [ 101.403215] ? lock_downgrade+0x8e0/0x8e0 [ 101.407343] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 101.411915] do_group_exit+0x135/0x3b0 [ 101.415783] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 101.420376] ? __ia32_sys_exit+0x50/0x50 [ 101.424419] ? kasan_check_write+0x14/0x20 [ 101.428633] ? do_raw_spin_lock+0xc1/0x200 [ 101.432849] get_signal+0x6a9/0x1480 [ 101.436545] ? ptrace_notify+0x110/0x110 [ 101.440589] ? kasan_check_write+0x14/0x20 [ 101.444804] ? ldsem_up_read+0x27/0x50 [ 101.448670] ? tty_ldisc_deref+0x30/0x40 [ 101.452710] ? tty_write+0x423/0x770 [ 101.456404] ? process_echoes+0x130/0x130 [ 101.460541] ? do_iter_write+0x36b/0x550 [ 101.464591] ? dup_iter+0x250/0x250 [ 101.468200] do_signal+0x98/0x2040 [ 101.471722] ? vfs_writev+0x1e9/0x320 [ 101.475507] ? setup_sigcontext+0x7d0/0x7d0 [ 101.479824] ? wait_for_completion+0x870/0x870 [ 101.484390] ? check_same_owner+0x320/0x320 [ 101.488701] ? kasan_check_write+0x14/0x20 [ 101.492916] ? fput+0x18/0x120 [ 101.496094] exit_to_usermode_loop+0x1bf/0x2a0 [ 101.501095] ? vfs_writev+0x320/0x320 [ 101.504891] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 101.509717] do_syscall_64+0x573/0x6e0 [ 101.513610] ? finish_task_switch+0x1ca/0x810 [ 101.518105] ? finish_task_switch+0x182/0x810 [ 101.522598] ? syscall_return_slowpath+0x4c0/0x4c0 [ 101.527510] ? syscall_return_slowpath+0x20c/0x4c0 [ 101.532418] ? prepare_exit_to_usermode+0x2f0/0x2f0 [ 101.537425] ? prepare_exit_to_usermode+0x19e/0x2f0 [ 101.542434] ? perf_trace_sys_enter+0x10f0/0x10f0 [ 101.547258] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 101.552086] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 101.557428] RIP: 0033:0x455b59 [ 101.560605] RSP: 002b:00007efee9daec68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 101.568302] RAX: fffffffffffffe00 RBX: 00007efee9daf6d4 RCX: 0000000000455b59 [ 101.575569] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 101.583256] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 101.590607] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 101.597864] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 101.605136] CPU: 0 PID: 6049 Comm: syz-executor1 Not tainted 4.17.0-rc3-syzkaller #0 [ 101.613462] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 101.622823] Call Trace: [ 101.625418] dump_stack+0x162/0x21a [ 101.629039] ? dump_stack_print_info.cold.2+0x48/0x48 [ 101.634252] ? pci_mmcfg_check_reserved+0x120/0x120 [ 101.639283] should_fail.cold.4+0x5/0xd [ 101.643248] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 101.648333] ? lock_release+0xa10/0xa10 [ 101.652298] ? rcu_note_context_switch+0x710/0x710 [ 101.657223] ? debug_check_no_locks_freed+0x310/0x310 [ 101.662401] ? __might_sleep+0x95/0x190 [ 101.666357] ? kasan_check_write+0x14/0x20 [ 101.670569] ? __mutex_lock+0x7d9/0x17f0 [ 101.674791] ? __mutex_lock+0x95d/0x17f0 [ 101.678907] ? n_tty_write+0x928/0x1110 [ 101.682883] ? debug_mutex_add_waiter+0x220/0x220 [ 101.687714] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 101.692194] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 101.696758] ? debug_mutex_wake_waiter+0x620/0x620 [ 101.701663] ? kasan_check_write+0x14/0x20 [ 101.705948] ? do_raw_spin_lock+0xc1/0x200 [ 101.711049] __should_failslab+0xba/0xf0 [ 101.715206] should_failslab+0x9/0x14 [ 101.719016] __kmalloc+0x63/0x760 [ 101.722471] ? __tty_buffer_request_room+0x27d/0x7d0 [ 101.727568] __tty_buffer_request_room+0x27d/0x7d0 [ 101.732479] ? flush_to_ldisc+0x650/0x650 [ 101.736640] ? lock_acquire+0x1dc/0x520 [ 101.740612] ? pty_write+0xcd/0x1d0 [ 101.744222] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 101.748708] ? lock_release+0xa10/0xa10 [ 101.752660] ? kasan_check_write+0x14/0x20 [ 101.756875] ? do_raw_spin_lock+0xc1/0x200 [ 101.761090] tty_insert_flip_string_fixed_flag+0x78/0x200 [ 101.766620] ? kasan_check_write+0x14/0x20 [ 101.770841] ? do_raw_spin_lock+0xc1/0x200 [ 101.775207] pty_write+0x100/0x1d0 [ 101.778739] n_tty_write+0x964/0x1110 [ 101.782538] ? lock_downgrade+0x8e0/0x8e0 [ 101.786672] ? process_echoes+0x130/0x130 [ 101.790799] ? __might_sleep+0x95/0x190 [ 101.794763] ? __init_waitqueue_head+0x140/0x140 [ 101.799506] ? kasan_check_write+0x14/0x20 [ 101.803730] tty_write+0x346/0x770 [ 101.807278] ? process_echoes+0x130/0x130 [ 101.811421] do_iter_write+0x36b/0x550 [ 101.815306] ? dup_iter+0x250/0x250 [ 101.818967] vfs_writev+0x16b/0x320 [ 101.822580] ? vfs_iter_write+0xb0/0xb0 [ 101.826549] ? wait_for_completion+0x870/0x870 [ 101.831302] ? check_same_owner+0x320/0x320 [ 101.835618] ? __fdget_pos+0x63/0x1b0 [ 101.839426] ? __fdget_raw+0x10/0x10 [ 101.843130] ? __sb_end_write+0x8a/0xb0 [ 101.847529] do_writev+0xf3/0x340 [ 101.851075] ? vfs_writev+0x320/0x320 [ 101.854887] __x64_sys_writev+0x70/0xb0 [ 101.858853] do_syscall_64+0x17b/0x6e0 [ 101.862721] ? finish_task_switch+0x28b/0x810 [ 101.867193] ? syscall_return_slowpath+0x4c0/0x4c0 [ 101.872106] ? syscall_return_slowpath+0x20c/0x4c0 [ 101.877045] ? prepare_exit_to_usermode+0x2f0/0x2f0 [ 101.882051] ? prepare_exit_to_usermode+0x19e/0x2f0 [ 101.887055] ? perf_trace_sys_enter+0x10f0/0x10f0 [ 101.891884] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 101.897579] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 101.902748] RIP: 0033:0x455b59 [ 101.905937] RSP: 002b:00007f4f3cfeec68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 101.913642] RAX: ffffffffffffffda RBX: 00007f4f3cfef6d4 RCX: 0000000000455b59 [ 101.920894] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 101.928153] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 101.935546] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 101.942800] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 101.950605] FAULT_INJECTION: forcing a failure. [ 101.950605] name fail_futex, interval 1, probability 0, space 0, times 0 [ 101.952288] FAULT_INJECTION: forcing a failure. [ 101.952288] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 101.962027] CPU: 0 PID: 6050 Comm: syz-executor5 Not tainted 4.17.0-rc3-syzkaller #0 [ 101.962031] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 101.962033] Call Trace: [ 101.962046] dump_stack+0x162/0x21a [ 101.997210] ? dump_stack_print_info.cold.2+0x48/0x48 [ 102.002386] should_fail.cold.4+0x5/0xd [ 102.006342] ? debug_check_no_locks_freed+0x310/0x310 [ 102.011513] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 102.016631] ? rb_erase_cached+0xc6a/0x32a0 [ 102.020941] ? debug_check_no_locks_freed+0x310/0x310 [ 102.026111] ? kasan_alloc_pages+0x38/0x40 [ 102.030326] ? get_page_from_freelist+0x10ff/0x4f00 [ 102.035330] ? debug_check_no_locks_freed+0x310/0x310 [ 102.040514] get_futex_key+0x2c3/0x1d10 [ 102.044472] ? futex_lock_pi_atomic+0x2a0/0x2a0 [ 102.049134] ? debug_check_no_obj_freed+0x2ff/0x584 [ 102.054150] ? lock_downgrade+0x8e0/0x8e0 [ 102.058306] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 102.062780] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 102.067345] ? kasan_check_write+0x14/0x20 [ 102.071583] ? lock_acquire+0x1dc/0x520 [ 102.075544] ? __free_pages_ok+0xd23/0x2bd0 [ 102.079848] ? lock_downgrade+0x8e0/0x8e0 [ 102.083997] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 102.088499] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 102.093090] ? kasan_check_write+0x14/0x20 [ 102.097308] ? do_raw_spin_lock+0xc1/0x200 [ 102.101542] ? trace_hardirqs_on+0xd/0x10 [ 102.105670] ? __update_load_avg_blocked_se.isra.33+0x460/0x460 [ 102.111711] ? update_load_avg+0x2d9/0x2570 [ 102.116015] ? free_unref_page_commit.isra.91+0x5f0/0x5f0 [ 102.121552] ? attach_entity_load_avg+0x850/0x850 [ 102.126396] ? attach_entity_load_avg+0x850/0x850 [ 102.131218] ? walk_component+0x815/0x2630 [ 102.135433] ? link_path_walk+0x58c/0x1900 [ 102.139643] ? path_openat+0x1f5/0x4870 [ 102.143595] ? do_filp_open+0x227/0x340 [ 102.147550] ? do_sys_open+0x3cc/0x690 [ 102.151420] ? debug_check_no_locks_freed+0x310/0x310 [ 102.156632] ? percpu_ref_put_many+0x11a/0x230 [ 102.161204] ? lock_downgrade+0x8e0/0x8e0 [ 102.165352] ? debug_check_no_locks_freed+0x310/0x310 [ 102.170523] ? lock_release+0xa10/0xa10 [ 102.174476] ? memcg_kmem_get_cache+0x3f1/0x870 [ 102.179157] ? modules_open+0xa0/0xa0 [ 102.183031] ? task_fork_fair+0x660/0x660 [ 102.187163] ? lock_release+0xa10/0xa10 [ 102.191118] futex_wake+0x15c/0x890 [ 102.194738] ? get_futex_key+0x1d10/0x1d10 [ 102.198972] ? cpuacct_css_alloc+0x160/0x160 [ 102.203365] ? debug_check_no_locks_freed+0x310/0x310 [ 102.208540] do_futex+0x890/0x2620 [ 102.212068] ? debug_check_no_locks_freed+0x310/0x310 [ 102.217249] ? debug_check_no_locks_freed+0x310/0x310 [ 102.222420] ? reweight_entity+0x10e0/0x10e0 [ 102.226808] ? do_filp_open+0x227/0x340 [ 102.230782] ? __x64_sys_open+0x79/0xb0 [ 102.234744] ? exit_robust_list+0x1b0/0x1b0 [ 102.239050] ? percpu_ref_put_many+0x11a/0x230 [ 102.243617] ? debug_check_no_locks_freed+0x310/0x310 [ 102.248787] ? set_next_entity+0x2e6/0xaf0 [ 102.253011] ? debug_check_no_locks_freed+0x310/0x310 [ 102.258182] ? update_load_avg+0x2570/0x2570 [ 102.262569] ? reweight_task+0x130/0x130 [ 102.266621] ? put_prev_entity+0x49/0x2a0 [ 102.270753] ? lock_acquire+0x1dc/0x520 [ 102.274705] ? __delayacct_add_tsk+0x49d/0x650 [ 102.279267] ? lock_acquire+0x1dc/0x520 [ 102.283220] ? __might_fault+0xf1/0x1b0 [ 102.287260] ? lock_downgrade+0x8e0/0x8e0 [ 102.291390] ? lock_acquire+0x1dc/0x520 [ 102.295451] ? __might_fault+0xf1/0x1b0 [ 102.299407] ? lock_downgrade+0x8e0/0x8e0 [ 102.303535] ? trace_hardirqs_off+0xd/0x10 [ 102.307757] ? lock_release+0xa10/0xa10 [ 102.311713] ? check_same_owner+0x320/0x320 [ 102.316013] ? __might_sleep+0x95/0x190 [ 102.320077] ? __might_sleep+0x95/0x190 [ 102.324035] mm_release+0x3ec/0x540 [ 102.332072] ? mm_access+0x120/0x120 [ 102.335773] ? kasan_check_write+0x14/0x20 [ 102.339990] ? do_raw_spin_lock+0xc1/0x200 [ 102.344217] ? trace_hardirqs_on+0xd/0x10 [ 102.348345] ? _raw_spin_unlock_irq+0x27/0x70 [ 102.352819] ? acct_collect+0x64f/0x7c0 [ 102.356770] ? trace_hardirqs_on+0xd/0x10 [ 102.360901] do_exit+0x4b5/0x22f0 [ 102.364351] ? mm_update_next_owner+0xbd0/0xbd0 [ 102.373533] ? lock_acquire+0x1dc/0x520 [ 102.377686] ? mutex_spin_on_owner+0x2e6/0x530 [ 102.382280] ? lock_downgrade+0x8e0/0x8e0 [ 102.386424] ? lock_release+0xa10/0xa10 [ 102.390429] ? debug_check_no_locks_freed+0x310/0x310 [ 102.395625] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 102.401255] ? __mutex_lock+0x767/0x17f0 [ 102.405327] ? tty_write_lock+0x2c/0x50 [ 102.409290] ? lock_downgrade+0x8e0/0x8e0 [ 102.413421] ? debug_check_no_locks_freed+0x310/0x310 [ 102.418678] ? memset+0x31/0x40 [ 102.421938] ? debug_mutex_free_waiter+0xfe/0x1b0 [ 102.426938] ? debug_mutex_wake_waiter+0x620/0x620 [ 102.431854] ? kasan_check_write+0x14/0x20 [ 102.436072] ? do_raw_spin_lock+0xc1/0x200 [ 102.440320] ? __mutex_lock+0x787/0x17f0 [ 102.444360] ? tty_write_lock+0x2c/0x50 [ 102.448331] ? mutex_trylock+0x2a0/0x2a0 [ 102.452385] ? lock_acquire+0x1dc/0x520 [ 102.456340] ? ldsem_down_read+0x32/0x40 [ 102.460399] ? memset+0x31/0x40 [ 102.463662] ? __dequeue_signal+0x467/0x8e0 [ 102.467969] ? aa_path_link+0x4f0/0x4f0 [ 102.471923] ? __flush_itimer_signals+0x710/0x710 [ 102.476746] ? recalc_sigpending+0x6a/0x150 [ 102.481047] ? get_signal+0x704/0x1480 [ 102.484916] ? lock_downgrade+0x8e0/0x8e0 [ 102.489047] do_group_exit+0x135/0x3b0 [ 102.492931] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 102.497529] ? __ia32_sys_exit+0x50/0x50 [ 102.502265] ? kasan_check_write+0x14/0x20 [ 102.506497] ? do_raw_spin_lock+0xc1/0x200 [ 102.510726] get_signal+0x6a9/0x1480 [ 102.514423] ? ptrace_notify+0x110/0x110 [ 102.518635] ? kasan_check_write+0x14/0x20 [ 102.522936] ? ldsem_up_read+0x27/0x50 [ 102.526815] ? tty_ldisc_deref+0x30/0x40 [ 102.530968] ? tty_write+0x423/0x770 [ 102.534660] ? expand_files.part.8+0x8b0/0x8b0 [ 102.539229] ? rw_verify_area+0xb8/0x2b0 [ 102.543268] ? process_echoes+0x130/0x130 [ 102.547398] ? do_iter_write+0x36b/0x550 [ 102.551437] ? dup_iter+0x250/0x250 [ 102.555048] do_signal+0x98/0x2040 [ 102.558568] ? vfs_writev+0x1e9/0x320 [ 102.562351] ? setup_sigcontext+0x7d0/0x7d0 [ 102.566654] ? wait_for_completion+0x870/0x870 [ 102.571218] ? check_same_owner+0x320/0x320 [ 102.575524] ? kasan_check_write+0x14/0x20 [ 102.579738] ? fput+0x18/0x120 [ 102.582916] exit_to_usermode_loop+0x1bf/0x2a0 [ 102.587488] ? vfs_writev+0x320/0x320 [ 102.591357] ? syscall_slow_exit_work+0x3d0/0x3d0 [ 102.596185] do_syscall_64+0x573/0x6e0 [ 102.600056] ? finish_task_switch+0x28b/0x810 [ 102.604555] ? syscall_return_slowpath+0x4c0/0x4c0 [ 102.609478] ? syscall_return_slowpath+0x20c/0x4c0 [ 102.614390] ? prepare_exit_to_usermode+0x2f0/0x2f0 [ 102.619388] ? prepare_exit_to_usermode+0x19e/0x2f0 [ 102.624387] ? perf_trace_sys_enter+0x10f0/0x10f0 [ 102.629209] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 102.634039] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 102.639208] RIP: 0033:0x455b59 [ 102.642389] RSP: 002b:00007f7244173c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 102.650176] RAX: fffffffffffffe00 RBX: 00007f72441746d4 RCX: 0000000000455b59 [ 102.657469] RDX: 0000000000000001 RSI: 0000000020000600 RDI: 0000000000000003 [ 102.664744] RBP: 000000000072bf50 R08: 0000000000000000 R09: 0000000000000000 [ 102.672005] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004 [ 102.679257] R13: 00000000000007bf R14: 0000000000700a88 R15: 0000000000000000 [ 102.686540] CPU: 1 PID: 6051 Comm: syz-executor Not tainted 4.17.0-rc3-syzkaller #0 [ 102.694344] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 102.695440] FAULT_INJECTION: forcing a failure. [ 102.695440] name fail_page_alloc, interval 1, probability 0, space 0, times 0 [ 102.705268] Call Trace: [ 102.705281] dump_stack+0x162/0x21a [ 102.705287] ? dump_stack_print_info.cold.2+0x48/0x48 [ 102.705294] ? lock_acquire+0x1dc/0x520 [ 102.705301] should_fail.cold.4+0x5/0xd [ 102.705306] ? fault_create_debugfs_attr+0x1a0/0x1a0 [ 102.705311] ? lock_acquire+0x1dc/0x520 [ 102.705321] ? mem_cgroup_id_get_many+0x150/0x150 [ 102.750256] ? lock_release+0xa10/0xa10 [ 102.754230] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 102.758742] ? __unlock_page_memcg+0x53/0x100 [ 102.763227] ? lock_downgrade+0x8e0/0x8e0 [ 102.767358] ? kasan_check_read+0x11/0x20 [ 102.771484] ? vma_kernel_pagesize+0x80/0x80 [ 102.775889] ? rcu_read_lock+0x70/0x70 [ 102.779771] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 102.784336] __alloc_pages_nodemask+0x34e/0xd70 [ 102.788989] ? page_remove_rmap+0x4eb/0xe00 [ 102.793295] ? __alloc_pages_slowpath+0x2db0/0x2db0 [ 102.798305] ? update_load_avg+0x2d9/0x2570 [ 102.802608] ? free_unref_page_commit.isra.91+0x5f0/0x5f0 [ 102.808146] ? lock_acquire+0x1dc/0x520 [ 102.812314] ? lock_release+0xa10/0xa10 [ 102.816282] alloc_pages_current+0xd6/0x1b0 [ 102.820584] __get_free_pages+0xf/0x40 [ 102.824465] __tlb_remove_page_size+0x26b/0x4d0 [ 102.829142] unmap_page_range+0xc2c/0x1ff0 [ 102.833358] ? __activate_page+0x13b0/0x13b0 [ 102.837752] ? vm_normal_page_pmd+0x330/0x330 [ 102.842315] ? kasan_check_read+0x11/0x20 [ 102.846442] ? rcu_is_watching+0x85/0x140 [ 102.850570] ? rcu_bh_force_quiescent_state+0x20/0x20 [ 102.855862] ? is_bpf_text_address+0x81/0xe0 [ 102.860258] ? kernel_text_address+0x79/0xf0 [ 102.864654] ? unwind_get_return_address+0x61/0xa0 [ 102.869585] ? __save_stack_trace+0x7e/0xd0 [ 102.873901] ? save_stack+0xa9/0xd0 [ 102.877509] ? save_stack+0x43/0xd0 [ 102.881119] ? __kasan_slab_free+0x11a/0x170 [ 102.885630] ? kmem_cache_free+0x86/0x2d0 [ 102.889780] ? __khugepaged_exit+0x39a/0x630 [ 102.894188] ? mmput+0x429/0x550 [ 102.897535] ? lock_acquire+0x1dc/0x520 [ 102.901488] ? pagevec_lru_move_fn+0x15e/0x230 [ 102.906404] ? lock_downgrade+0x8e0/0x8e0 [ 102.910547] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 102.915044] ? uprobe_mmap+0xc10/0xc10 [ 102.918913] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 102.923535] ? do_raw_spin_lock+0xc1/0x200 [ 102.927764] unmap_single_vma+0x121/0x300 [ 102.931899] unmap_vmas+0xe2/0x190 [ 102.935420] exit_mmap+0x209/0x430 [ 102.938954] ? __ia32_sys_munmap+0x70/0x70 [ 102.943171] ? __khugepaged_exit+0x3a8/0x630 [ 102.947563] ? __might_sleep+0x95/0x190 [ 102.952232] mmput+0x1f4/0x550 [ 102.955423] ? lock_downgrade+0x8e0/0x8e0 [ 102.959551] ? set_mm_exe_file+0x1f0/0x1f0 [ 102.963770] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 102.968250] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 102.972826] ? kasan_check_write+0x14/0x20 [ 102.977040] ? do_raw_spin_lock+0xc1/0x200 [ 102.981517] do_exit+0xd0f/0x22f0 [ 102.984981] ? mm_update_next_owner+0xbd0/0xbd0 [ 102.989629] ? alloc_set_pte+0x7f8/0x17d0 [ 102.993760] ? debug_check_no_locks_freed+0x310/0x310 [ 102.998933] ? debug_check_no_locks_freed+0x310/0x310 [ 103.004101] ? debug_check_no_locks_freed+0x310/0x310 [ 103.009269] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 103.013834] ? debug_check_no_locks_freed+0x310/0x310 [ 103.019093] ? __mutex_lock+0x95d/0x17f0 [ 103.023133] ? lock_downgrade+0x8e0/0x8e0 [ 103.027272] ? debug_mutex_add_waiter+0x220/0x220 [ 103.032100] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 103.036579] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 103.041143] ? debug_mutex_wake_waiter+0x620/0x620 [ 103.046055] ? kasan_check_write+0x14/0x20 [ 103.050290] ? do_raw_spin_lock+0xc1/0x200 [ 103.054504] ? debug_check_no_locks_freed+0x310/0x310 [ 103.059673] ? _raw_spin_unlock+0x22/0x30 [ 103.063819] ? __mutex_lock+0x95d/0x17f0 [ 103.067863] ? tty_write_lock+0x2c/0x50 [ 103.071947] ? mutex_trylock+0x2a0/0x2a0 [ 103.076001] ? lock_acquire+0x1dc/0x520 [ 103.079966] ? remove_wait_queue+0x1a5/0x350 [ 103.084371] ? lock_downgrade+0x8e0/0x8e0 [ 103.088497] ? lock_downgrade+0x8e0/0x8e0 [ 103.092625] ? do_raw_spin_unlock+0x1f9/0x2e0 [ 103.097101] ? memset+0x31/0x40 [ 103.100362] ? __dequeue_signal+0x467/0x8e0 [ 103.104663] ? __wake_up_common_lock+0x1c2/0x300 [ 103.109401] ? lock_downgrade+0x8e0/0x8e0 [ 103.113558] ? __flush_itimer_signals+0x710/0x710 [ 103.118397] ? recalc_sigpending+0x6a/0x150 [ 103.122712] ? get_signal+0x704/0x1480 [ 103.126582] ? lock_downgrade+0x8e0/0x8e0 [ 103.130709] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 103.135272] do_group_exit+0x135/0x3b0 [ 103.139154] ? do_raw_spin_trylock+0x1b0/0x1b0 [ 103.143723] ? __ia32_sys_exit+0x50/0x50 [ 103.147939] ? kasan_check_write+0x14/0x20 [ 103.152158] ? do_raw_spin_lock+0xc1/0x200 [ 103.156374] get_signal+0x6a9/0x1480 [ 103.160504] ? ptrace_notify+0x110/0x110 [ 103.164548] ? kasan_check_write+0x14/0x20 [ 103.168767] ? ldsem_up_read+0x27/0x50 [ 103.172636] ? tty_ldisc_deref+0x30/0x40 [ 103.176687] ? tty_write+0x423/0x770 [ 103.180381] ? process_echoes+0x130/0x130