[ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty2. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.79' (ECDSA) to the list of known hosts. 2020/07/26 21:20:25 parsed 1 programs 2020/07/26 21:20:25 executed programs: 0 syzkaller login: [ 951.176398][ T6842] IPVS: ftp: loaded support on port[0] = 21 [ 951.263409][ T6842] chnl_net:caif_netlink_parms(): no params data found [ 951.306711][ T6842] bridge0: port 1(bridge_slave_0) entered blocking state [ 951.314271][ T6842] bridge0: port 1(bridge_slave_0) entered disabled state [ 951.322456][ T6842] device bridge_slave_0 entered promiscuous mode [ 951.331391][ T6842] bridge0: port 2(bridge_slave_1) entered blocking state [ 951.338951][ T6842] bridge0: port 2(bridge_slave_1) entered disabled state [ 951.346778][ T6842] device bridge_slave_1 entered promiscuous mode [ 951.364825][ T6842] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 951.376464][ T6842] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 951.396293][ T6842] team0: Port device team_slave_0 added [ 951.404638][ T6842] team0: Port device team_slave_1 added [ 951.420600][ T6842] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 951.427660][ T6842] batman_adv: batadv0: The MTU of interface batadv_slave_0 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 951.453588][ T6842] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 951.466020][ T6842] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 951.472946][ T6842] batman_adv: batadv0: The MTU of interface batadv_slave_1 is too small (1500) to handle the transport of batman-adv packets. Packets going over this interface will be fragmented on layer2 which could impact the performance. Setting the MTU to 1560 would solve the problem. [ 951.498949][ T6842] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 951.556728][ T6842] device hsr_slave_0 entered promiscuous mode [ 951.584368][ T6842] device hsr_slave_1 entered promiscuous mode [ 951.712040][ T6842] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 951.747139][ T6842] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 951.806582][ T6842] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 951.846489][ T6842] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 951.897510][ T6842] bridge0: port 2(bridge_slave_1) entered blocking state [ 951.904733][ T6842] bridge0: port 2(bridge_slave_1) entered forwarding state [ 951.912410][ T6842] bridge0: port 1(bridge_slave_0) entered blocking state [ 951.919563][ T6842] bridge0: port 1(bridge_slave_0) entered forwarding state [ 951.957156][ T6842] 8021q: adding VLAN 0 to HW filter on device bond0 [ 951.971614][ T2669] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 951.983539][ T2669] bridge0: port 1(bridge_slave_0) entered disabled state [ 951.992045][ T2669] bridge0: port 2(bridge_slave_1) entered disabled state [ 952.000756][ T2669] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 952.013534][ T6842] 8021q: adding VLAN 0 to HW filter on device team0 [ 952.026427][ T7053] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 952.034877][ T7053] bridge0: port 1(bridge_slave_0) entered blocking state [ 952.041963][ T7053] bridge0: port 1(bridge_slave_0) entered forwarding state [ 952.066266][ T7054] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 952.075465][ T7054] bridge0: port 2(bridge_slave_1) entered blocking state [ 952.082499][ T7054] bridge0: port 2(bridge_slave_1) entered forwarding state [ 952.090926][ T7054] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 952.101433][ T7054] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 952.110032][ T7054] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 952.123599][ T6842] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 952.139496][ T6842] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 952.148668][ T2702] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 952.156550][ T2702] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 952.174996][ T2669] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 952.182441][ T2669] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 952.196958][ T6842] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 952.214813][ T2702] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 952.234704][ T2669] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 952.243026][ T2669] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 952.251684][ T2669] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 952.260841][ T6842] device veth0_vlan entered promiscuous mode [ 952.268254][ T6842] device veth1_vlan entered promiscuous mode [ 952.288314][ T2702] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 952.297506][ T2702] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 952.308366][ T6842] device veth0_macvtap entered promiscuous mode [ 952.318668][ T6842] device veth1_macvtap entered promiscuous mode [ 952.339020][ T6842] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 952.346775][ T2669] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 952.355977][ T2669] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 952.363895][ T2669] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 952.373236][ T2669] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 952.384137][ T6842] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 952.395719][ T7051] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 952.405149][ T7051] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready 2020/07/26 21:20:31 executed programs: 220 2020/07/26 21:20:36 executed programs: 524 2020/07/26 21:20:41 executed programs: 642 2020/07/26 21:20:46 executed programs: 946 2020/07/26 21:20:51 executed programs: 1054 2020/07/26 21:20:56 executed programs: 1342 2020/07/26 21:21:01 executed programs: 1638 2020/07/26 21:21:06 executed programs: 1915 2020/07/26 21:21:11 executed programs: 2146 2020/07/26 21:21:16 executed programs: 2384 2020/07/26 21:21:21 executed programs: 2621 2020/07/26 21:21:26 executed programs: 2879 2020/07/26 21:21:31 executed programs: 3106 2020/07/26 21:21:36 executed programs: 3352 2020/07/26 21:21:41 executed programs: 3590 2020/07/26 21:21:46 executed programs: 3840 2020/07/26 21:21:51 executed programs: 4065 2020/07/26 21:21:56 executed programs: 4285 2020/07/26 21:22:01 executed programs: 4532 2020/07/26 21:22:06 executed programs: 4752 2020/07/26 21:22:11 executed programs: 4979 2020/07/26 21:22:16 executed programs: 5202 2020/07/26 21:22:21 executed programs: 5431 2020/07/26 21:22:26 executed programs: 5668 2020/07/26 21:22:31 executed programs: 5898 2020/07/26 21:22:36 executed programs: 6157 2020/07/26 21:22:41 executed programs: 6358 2020/07/26 21:22:46 executed programs: 6590 2020/07/26 21:22:51 executed programs: 6809 2020/07/26 21:22:56 executed programs: 7036 [ 1107.844019][ T1153] INFO: task syz-executor.0:7293 blocked for more than 143 seconds. [ 1107.855682][ T1153] Not tainted 5.8.0-rc6-syzkaller #0 [ 1107.879655][ T1153] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1107.900006][ T1153] syz-executor.0 D29024 7293 6842 0x00004000 [ 1107.914411][ T1153] Call Trace: [ 1107.921325][ T1153] __schedule+0x851/0xcf0 [ 1107.930357][ T1153] ? schedule+0x188/0x220 [ 1107.939382][ T1153] ? schedule_preempt_disabled+0xf/0x20 [ 1107.951901][ T1153] ? __mutex_lock_common+0x129f/0x2fc0 [ 1107.963311][ T1153] ? pipe_write+0xd9/0x1680 [ 1107.974990][ T1153] ? mutex_lock_nested+0x1a/0x20 [ 1107.986282][ T1153] ? pipe_write+0xd9/0x1680 [ 1107.995521][ T1153] ? trace_lock_release+0x137/0x1a0 [ 1108.007700][ T1153] ? iov_iter_init+0x83/0x160 [ 1108.017126][ T1153] ? vfs_write+0xa08/0xc70 [ 1108.033973][ T1153] ? ksys_write+0x11b/0x220 [ 1108.038564][ T1153] ? do_syscall_64+0x22/0xe0 [ 1108.043310][ T1153] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1108.062448][ T1153] ? do_syscall_64+0x73/0xe0 [ 1108.072920][ T1153] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1108.086187][ T1153] INFO: task syz-executor.0:7345 blocked for more than 143 seconds. [ 1108.103484][ T1153] Not tainted 5.8.0-rc6-syzkaller #0 [ 1108.121389][ T1153] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1108.140888][ T1153] syz-executor.0 D29776 7345 6842 0x00004000 [ 1108.155339][ T1153] Call Trace: [ 1108.162201][ T1153] __schedule+0x851/0xcf0 [ 1108.167055][ T1153] ? schedule+0x188/0x220 [ 1108.171543][ T1153] ? schedule_preempt_disabled+0xf/0x20 [ 1108.177598][ T1153] ? __mutex_lock_common+0x129f/0x2fc0 [ 1108.183241][ T1153] ? pipe_write+0xd9/0x1680 [ 1108.188244][ T1153] ? mutex_lock_nested+0x1a/0x20 [ 1108.193328][ T1153] ? pipe_write+0xd9/0x1680 [ 1108.198411][ T1153] ? trace_lock_release+0x137/0x1a0 [ 1108.203743][ T1153] ? iov_iter_init+0x83/0x160 [ 1108.208873][ T1153] ? vfs_write+0xa08/0xc70 [ 1108.213416][ T1153] ? ksys_write+0x11b/0x220 [ 1108.218384][ T1153] ? do_syscall_64+0x22/0xe0 [ 1108.223100][ T1153] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1108.229655][ T1153] ? do_syscall_64+0x73/0xe0 [ 1108.234804][ T1153] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1108.241092][ T1153] INFO: task syz-executor.0:7390 blocked for more than 143 seconds. [ 1108.249599][ T1153] Not tainted 5.8.0-rc6-syzkaller #0 [ 1108.255870][ T1153] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1108.265030][ T1153] syz-executor.0 D29024 7390 6842 0x00004000 [ 1108.271522][ T1153] Call Trace: [ 1108.275276][ T1153] __schedule+0x851/0xcf0 [ 1108.279766][ T1153] ? schedule+0x188/0x220 [ 1108.284641][ T1153] ? schedule_preempt_disabled+0xf/0x20 [ 1108.290375][ T1153] ? __mutex_lock_common+0x129f/0x2fc0 [ 1108.297270][ T1153] ? pipe_write+0xd9/0x1680 [ 1108.306559][ T1153] ? mutex_lock_nested+0x1a/0x20 [ 1108.318744][ T1153] ? pipe_write+0xd9/0x1680 [ 1108.329014][ T1153] ? trace_lock_release+0x137/0x1a0 [ 1108.347170][ T1153] ? iov_iter_init+0x83/0x160 [ 1108.356566][ T1153] ? vfs_write+0xa08/0xc70 [ 1108.368814][ T1153] ? ksys_write+0x11b/0x220 [ 1108.377992][ T1153] ? do_syscall_64+0x22/0xe0 [ 1108.388455][ T1153] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1108.401481][ T1153] ? do_syscall_64+0x73/0xe0 [ 1108.406523][ T1153] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1108.412842][ T1153] INFO: task syz-executor.0:7429 blocked for more than 143 seconds. [ 1108.421384][ T1153] Not tainted 5.8.0-rc6-syzkaller #0 [ 1108.427611][ T1153] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1108.436767][ T1153] syz-executor.0 D29776 7429 6842 0x00004000 [ 1108.443261][ T1153] Call Trace: [ 1108.447260][ T1153] __schedule+0x851/0xcf0 [ 1108.451766][ T1153] ? schedule+0x188/0x220 [ 1108.456630][ T1153] ? schedule_preempt_disabled+0xf/0x20 [ 1108.462404][ T1153] ? __mutex_lock_common+0x129f/0x2fc0 [ 1108.470481][ T1153] ? pipe_write+0xd9/0x1680 [ 1108.479669][ T1153] ? mutex_lock_nested+0x1a/0x20 [ 1108.490815][ T1153] ? pipe_write+0xd9/0x1680 [ 1108.501199][ T1153] ? trace_lock_release+0x137/0x1a0 [ 1108.512212][ T1153] ? iov_iter_init+0x83/0x160 [ 1108.522737][ T1153] ? vfs_write+0xa08/0xc70 [ 1108.532980][ T1153] ? ksys_write+0x11b/0x220 [ 1108.543468][ T1153] ? do_syscall_64+0x22/0xe0 [ 1108.548618][ T1153] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1108.555253][ T1153] ? do_syscall_64+0x73/0xe0 [ 1108.560071][ T1153] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1108.567670][ T1153] INFO: task syz-executor.0:7556 blocked for more than 144 seconds. [ 1108.576210][ T1153] Not tainted 5.8.0-rc6-syzkaller #0 [ 1108.582225][ T1153] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1108.591434][ T1153] syz-executor.0 D29728 7556 6842 0x00004000 [ 1108.598943][ T1153] Call Trace: [ 1108.602502][ T1153] __schedule+0x851/0xcf0 [ 1108.607331][ T1153] ? schedule+0x188/0x220 [ 1108.611823][ T1153] ? schedule_preempt_disabled+0xf/0x20 [ 1108.618006][ T1153] ? __mutex_lock_common+0x129f/0x2fc0 [ 1108.623757][ T1153] ? pipe_write+0xd9/0x1680 [ 1108.628765][ T1153] ? mutex_lock_nested+0x1a/0x20 [ 1108.634210][ T1153] ? pipe_write+0xd9/0x1680 [ 1108.645298][ T1153] ? trace_lock_release+0x137/0x1a0 [ 1108.656367][ T1153] ? iov_iter_init+0x83/0x160 [ 1108.666799][ T1153] ? vfs_write+0xa08/0xc70 [ 1108.677060][ T1153] ? ksys_write+0x11b/0x220 [ 1108.686416][ T1153] ? do_syscall_64+0x22/0xe0 [ 1108.696831][ T1153] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1108.709966][ T1153] ? do_syscall_64+0x73/0xe0 [ 1108.720363][ T1153] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1108.733463][ T1153] INFO: task syz-executor.0:7568 blocked for more than 144 seconds. [ 1108.750796][ T1153] Not tainted 5.8.0-rc6-syzkaller #0 [ 1108.763664][ T1153] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1108.782821][ T1153] syz-executor.0 D29024 7568 6842 0x00004000 [ 1108.789773][ T1153] Call Trace: [ 1108.793210][ T1153] __schedule+0x851/0xcf0 [ 1108.798001][ T1153] ? schedule+0x188/0x220 [ 1108.802451][ T1153] ? schedule_preempt_disabled+0xf/0x20 [ 1108.808459][ T1153] ? __mutex_lock_common+0x129f/0x2fc0 [ 1108.814351][ T1153] ? pipe_write+0xd9/0x1680 [ 1108.819008][ T1153] ? mutex_lock_nested+0x1a/0x20 [ 1108.824479][ T1153] ? pipe_write+0xd9/0x1680 [ 1108.829117][ T1153] ? trace_lock_release+0x137/0x1a0 [ 1108.834771][ T1153] ? iov_iter_init+0x83/0x160 [ 1108.839585][ T1153] ? vfs_write+0xa08/0xc70 [ 1108.844603][ T1153] ? ksys_write+0x11b/0x220 [ 1108.849249][ T1153] ? do_syscall_64+0x22/0xe0 [ 1108.855491][ T1153] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1108.861714][ T1153] ? do_syscall_64+0x73/0xe0 [ 1108.866757][ T1153] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1108.873056][ T1153] INFO: task syz-executor.0:7587 blocked for more than 144 seconds. 2020/07/26 21:23:03 executed programs: 7231 [ 1108.882572][ T1153] Not tainted 5.8.0-rc6-syzkaller #0 [ 1108.895278][ T1153] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1108.910460][ T1153] syz-executor.0 D29024 7587 6842 0x00004000 [ 1108.933926][ T1153] Call Trace: [ 1108.945648][ T1153] __schedule+0x851/0xcf0 [ 1108.950025][ T1153] ? schedule+0x188/0x220 [ 1108.961377][ T1153] ? schedule_preempt_disabled+0xf/0x20 [ 1108.982011][ T1153] ? __mutex_lock_common+0x129f/0x2fc0 [ 1108.993937][ T1153] ? pipe_write+0xd9/0x1680 [ 1108.998485][ T1153] ? mutex_lock_nested+0x1a/0x20 [ 1109.023513][ T1153] ? pipe_write+0xd9/0x1680 [ 1109.035134][ T1153] ? trace_lock_release+0x137/0x1a0 [ 1109.041962][ T1153] ? iov_iter_init+0x83/0x160 [ 1109.053945][ T1153] ? vfs_write+0xa08/0xc70 [ 1109.062695][ T1153] ? ksys_write+0x11b/0x220 [ 1109.094010][ T1153] ? do_syscall_64+0x22/0xe0 [ 1109.094030][ T1153] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1109.094047][ T1153] ? do_syscall_64+0x73/0xe0 [ 1109.121221][ T1153] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1109.144097][ T1153] INFO: task syz-executor.0:7612 blocked for more than 144 seconds. [ 1109.186089][ T1153] Not tainted 5.8.0-rc6-syzkaller #0 [ 1109.198913][ T1153] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1109.245690][ T1153] syz-executor.0 D29024 7612 6842 0x00004000 [ 1109.254294][ T1153] Call Trace: [ 1109.257702][ T1153] __schedule+0x851/0xcf0 [ 1109.262089][ T1153] ? schedule+0x188/0x220 [ 1109.304967][ T1153] ? schedule_preempt_disabled+0xf/0x20 [ 1109.310645][ T1153] ? __mutex_lock_common+0x129f/0x2fc0 [ 1109.330324][ T1153] ? pipe_write+0xd9/0x1680 [ 1109.335722][ T1153] ? mutex_lock_nested+0x1a/0x20 [ 1109.340797][ T1153] ? pipe_write+0xd9/0x1680 [ 1109.352873][ T1153] ? trace_lock_release+0x137/0x1a0 [ 1109.360807][ T1153] ? iov_iter_init+0x83/0x160 [ 1109.384824][ T1153] ? vfs_write+0xa08/0xc70 [ 1109.389311][ T1153] ? ksys_write+0x11b/0x220 [ 1109.405524][ T1153] ? do_syscall_64+0x22/0xe0 [ 1109.410684][ T1153] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1109.446687][ T1153] ? do_syscall_64+0x73/0xe0 [ 1109.451452][ T1153] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1109.474908][ T1153] INFO: task syz-executor.0:7651 blocked for more than 144 seconds. [ 1109.482930][ T1153] Not tainted 5.8.0-rc6-syzkaller #0 [ 1109.520870][ T1153] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1109.545268][ T1153] syz-executor.0 D29024 7651 6842 0x00004000 [ 1109.551684][ T1153] Call Trace: [ 1109.573592][ T1153] __schedule+0x851/0xcf0 [ 1109.579011][ T1153] ? schedule+0x188/0x220 [ 1109.594090][ T1153] ? schedule_preempt_disabled+0xf/0x20 [ 1109.599775][ T1153] ? __mutex_lock_common+0x129f/0x2fc0 [ 1109.653945][ T1153] ? pipe_write+0xd9/0x1680 [ 1109.658682][ T1153] ? mutex_lock_nested+0x1a/0x20 [ 1109.663627][ T1153] ? pipe_write+0xd9/0x1680 [ 1109.701040][ T1153] ? trace_lock_release+0x137/0x1a0 [ 1109.708000][ T1153] ? iov_iter_init+0x83/0x160 [ 1109.712909][ T1153] ? vfs_write+0xa08/0xc70 [ 1109.718757][ T1153] ? ksys_write+0x11b/0x220 [ 1109.724567][ T1153] ? do_syscall_64+0x22/0xe0 [ 1109.747845][ T1153] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1109.756474][ T1153] ? do_syscall_64+0x73/0xe0 [ 1109.776289][ T1153] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1109.804026][ T1153] INFO: task syz-executor.0:7656 blocked for more than 145 seconds. [ 1109.835648][ T1153] Not tainted 5.8.0-rc6-syzkaller #0 [ 1109.841654][ T1153] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1109.873933][ T1153] syz-executor.0 D29024 7656 6842 0x00004000 [ 1109.880348][ T1153] Call Trace: [ 1109.883668][ T1153] __schedule+0x851/0xcf0 [ 1109.904077][ T1153] ? schedule+0x188/0x220 [ 1109.913172][ T1153] ? schedule_preempt_disabled+0xf/0x20 [ 1109.933984][ T1153] ? __mutex_lock_common+0x129f/0x2fc0 [ 1109.956767][ T1153] ? pipe_write+0xd9/0x1680 [ 1109.962776][ T1153] ? mutex_lock_nested+0x1a/0x20 [ 1109.983994][ T1153] ? pipe_write+0xd9/0x1680 [ 1110.006168][ T1153] ? trace_lock_release+0x137/0x1a0 [ 1110.014965][ T1153] ? iov_iter_init+0x83/0x160 [ 1110.021807][ T1153] ? vfs_write+0xa08/0xc70 [ 1110.035738][ T1153] ? ksys_write+0x11b/0x220 [ 1110.047441][ T1153] ? do_syscall_64+0x22/0xe0 [ 1110.061438][ T1153] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1110.068225][ T1153] ? do_syscall_64+0x73/0xe0 [ 1110.072946][ T1153] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1110.081658][ T1153] [ 1110.081658][ T1153] Showing all locks held in the system: [ 1110.105307][ T1153] 1 lock held by khungtaskd/1153: [ 1110.118621][ T1153] #0: ffffffff894e9490 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30 [ 1110.133628][ T1153] 1 lock held by in:imklog/6492: [ 1110.146029][ T1153] #0: ffff8880a7465670 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0x253/0x2f0 [ 1110.158056][ T1153] 1 lock held by syz-executor.0/7174: [ 1110.170637][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xcd6/0x1680 [ 1110.187358][ T1153] 1 lock held by syz-executor.0/7293: [ 1110.203249][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1110.226592][ T1153] 1 lock held by syz-executor.0/7345: [ 1110.236658][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1110.260305][ T1153] 1 lock held by syz-executor.0/7390: [ 1110.268799][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1110.292578][ T1153] 1 lock held by syz-executor.0/7429: [ 1110.309360][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1110.319032][ T1153] 1 lock held by syz-executor.0/7556: [ 1110.324952][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1110.334600][ T1153] 1 lock held by syz-executor.0/7568: [ 1110.340141][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1110.359463][ T1153] 1 lock held by syz-executor.0/7587: [ 1110.371846][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1110.398461][ T1153] 1 lock held by syz-executor.0/7612: [ 1110.426016][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1110.437536][ T1153] 1 lock held by syz-executor.0/7651: [ 1110.451708][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1110.472488][ T1153] 1 lock held by syz-executor.0/7656: [ 1110.484831][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1110.494549][ T1153] 1 lock held by syz-executor.0/7668: [ 1110.500051][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1110.509666][ T1153] 1 lock held by syz-executor.0/7847: [ 1110.524006][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1110.551878][ T1153] 1 lock held by syz-executor.0/7862: [ 1110.557782][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1110.574681][ T1153] 1 lock held by syz-executor.0/7892: [ 1110.580050][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1110.592871][ T1153] 1 lock held by syz-executor.0/7927: [ 1110.598836][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1110.608655][ T1153] 1 lock held by syz-executor.0/8032: [ 1110.632805][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1110.644429][ T1153] 1 lock held by syz-executor.0/8034: [ 1110.649963][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1110.669254][ T1153] 1 lock held by syz-executor.0/8093: [ 1110.675019][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1110.705136][ T1153] 1 lock held by syz-executor.0/8246: [ 1110.712553][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1110.729957][ T1153] 1 lock held by syz-executor.0/8293: [ 1110.735954][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1110.745504][ T1153] 1 lock held by syz-executor.0/8313: [ 1110.767473][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1110.780628][ T1153] 1 lock held by syz-executor.0/8333: [ 1110.803911][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1110.813176][ T1153] 1 lock held by syz-executor.0/8355: [ 1110.854911][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1110.878312][ T1153] 1 lock held by syz-executor.0/8372: [ 1110.894858][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1110.928755][ T1153] 1 lock held by syz-executor.0/8397: [ 1110.952528][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1110.975506][ T1153] 1 lock held by syz-executor.0/8402: [ 1110.987683][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1111.017552][ T1153] 1 lock held by syz-executor.0/8405: [ 1111.022976][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1111.068539][ T1153] 1 lock held by syz-executor.0/8578: [ 1111.086286][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1111.102718][ T1153] 1 lock held by syz-executor.0/8712: [ 1111.110510][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1111.124136][ T1153] 1 lock held by syz-executor.0/8730: [ 1111.136470][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1111.153311][ T1153] 1 lock held by syz-executor.0/8804: [ 1111.168007][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1111.200166][ T1153] 1 lock held by syz-executor.0/8809: [ 1111.215645][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1111.239704][ T1153] 1 lock held by syz-executor.0/8940: [ 1111.250679][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1111.280849][ T1153] 1 lock held by syz-executor.0/8952: [ 1111.295077][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1111.319153][ T1153] 1 lock held by syz-executor.0/8957: [ 1111.332493][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1111.363555][ T1153] 1 lock held by syz-executor.0/9027: [ 1111.369819][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1111.405665][ T1153] 1 lock held by syz-executor.0/9109: [ 1111.411065][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1111.445922][ T1153] 1 lock held by syz-executor.0/9121: [ 1111.451322][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1111.483904][ T1153] 1 lock held by syz-executor.0/9126: [ 1111.496357][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1111.519722][ T1153] 1 lock held by syz-executor.0/9327: [ 1111.534925][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1111.554875][ T1153] 1 lock held by syz-executor.0/9392: [ 1111.560300][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1111.594847][ T1153] 1 lock held by syz-executor.0/9395: [ 1111.600249][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1111.633690][ T1153] 1 lock held by syz-executor.0/9464: [ 1111.644956][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1111.675043][ T1153] 1 lock held by syz-executor.0/9477: [ 1111.680441][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1111.703277][ T1153] 1 lock held by syz-executor.0/9488: [ 1111.715817][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1111.739577][ T1153] 1 lock held by syz-executor.0/9634: [ 1111.759390][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1111.781743][ T1153] 1 lock held by syz-executor.0/9642: [ 1111.794901][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1111.814991][ T1153] 1 lock held by syz-executor.0/9654: [ 1111.820396][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1111.849818][ T1153] 1 lock held by syz-executor.0/9664: [ 1111.871317][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1111.887554][ T1153] 1 lock held by syz-executor.0/9667: [ 1111.907350][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1111.926794][ T1153] 1 lock held by syz-executor.0/9686: [ 1111.932203][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1111.957415][ T1153] 1 lock held by syz-executor.0/9689: [ 1111.992921][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1112.003912][ T1153] 1 lock held by syz-executor.0/9756: [ 1112.026248][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1112.057463][ T1153] 1 lock held by syz-executor.0/9797: [ 1112.064830][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1112.081696][ T1153] 1 lock held by syz-executor.0/9903: [ 1112.087468][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1112.097037][ T1153] 1 lock held by syz-executor.0/9960: [ 1112.102570][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1112.121593][ T1153] 1 lock held by syz-executor.0/9977: [ 1112.127354][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1112.144214][ T1153] 1 lock held by syz-executor.0/10210: [ 1112.151787][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1112.161465][ T1153] 1 lock held by syz-executor.0/10298: [ 1112.177546][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1112.193322][ T1153] 1 lock held by syz-executor.0/10303: [ 1112.208327][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1112.232882][ T1153] 1 lock held by syz-executor.0/10339: [ 1112.242313][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1112.260172][ T1153] 1 lock held by syz-executor.0/10349: [ 1112.269181][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1112.285811][ T1153] 1 lock held by syz-executor.0/10421: [ 1112.313912][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1112.323087][ T1153] 1 lock held by syz-executor.0/10426: [ 1112.344066][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1112.353531][ T1153] 1 lock held by syz-executor.0/10465: [ 1112.359698][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1112.369349][ T1153] 1 lock held by syz-executor.0/10514: [ 1112.384446][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1112.394328][ T1153] 1 lock held by syz-executor.0/10526: [ 1112.409082][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1112.435106][ T1153] 1 lock held by syz-executor.0/10573: [ 1112.446943][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1112.469418][ T1153] 1 lock held by syz-executor.0/10680: [ 1112.477196][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1112.502351][ T1153] 1 lock held by syz-executor.0/10690: [ 1112.508200][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1112.517996][ T1153] 1 lock held by syz-executor.0/10730: [ 1112.523457][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1112.535411][ T1153] 1 lock held by syz-executor.0/10772: [ 1112.540877][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1112.557559][ T1153] 1 lock held by syz-executor.0/10789: [ 1112.563044][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1112.577987][ T1153] 1 lock held by syz-executor.0/10959: [ 1112.583544][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1112.599959][ T1153] 1 lock held by syz-executor.0/10962: [ 1112.607567][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1112.622054][ T1153] 1 lock held by syz-executor.0/11076: [ 1112.629912][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1112.639402][ T1153] 1 lock held by syz-executor.0/11188: [ 1112.645210][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1112.663474][ T1153] 1 lock held by syz-executor.0/11203: [ 1112.681462][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1112.704047][ T1153] 1 lock held by syz-executor.0/11313: [ 1112.709526][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1112.722297][ T1153] 1 lock held by syz-executor.0/11326: [ 1112.758693][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1112.783894][ T1153] 1 lock held by syz-executor.0/11337: [ 1112.790260][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1112.799780][ T1153] 1 lock held by syz-executor.0/11353: [ 1112.813882][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1112.823448][ T1153] 1 lock held by syz-executor.0/11487: [ 1112.850651][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1112.873896][ T1153] 1 lock held by syz-executor.0/11492: [ 1112.879376][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1112.905915][ T1153] 1 lock held by syz-executor.0/11643: [ 1112.911416][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1112.943899][ T1153] 1 lock held by syz-executor.0/11680: [ 1112.949435][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1112.966183][ T1153] 1 lock held by syz-executor.0/11960: [ 1112.978121][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1113.007037][ T1153] 1 lock held by syz-executor.0/12223: [ 1113.035630][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1113.063890][ T1153] 1 lock held by syz-executor.0/13023: [ 1113.069367][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1113.095960][ T1153] 1 lock held by syz-executor.0/13176: [ 1113.101434][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1113.140814][ T1153] 1 lock held by syz-executor.0/13780: [ 1113.148924][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1113.173881][ T1153] 1 lock held by syz-executor.0/14669: [ 1113.179358][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1113.198531][ T1153] 1 lock held by syz-executor.0/14697: [ 1113.225765][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1113.243983][ T1153] 1 lock held by syz-executor.0/14941: [ 1113.249465][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1113.273885][ T1153] 1 lock held by syz-executor.0/15232: [ 1113.279406][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1113.324026][ T1153] 1 lock held by syz-executor.0/15245: [ 1113.329509][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1113.362660][ T1153] 1 lock held by syz-executor.0/15348: [ 1113.368583][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1113.383657][ T1153] 1 lock held by syz-executor.0/15554: [ 1113.391554][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1113.411386][ T1153] 1 lock held by syz-executor.0/17327: [ 1113.423741][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1113.448038][ T1153] 1 lock held by syz-executor.0/17434: [ 1113.453617][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1113.470115][ T1153] 1 lock held by syz-executor.0/17858: [ 1113.478165][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1113.487701][ T1153] 1 lock held by syz-executor.0/17957: [ 1113.502482][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1113.539406][ T1153] 1 lock held by syz-executor.0/18253: [ 1113.545555][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1113.555160][ T1153] 1 lock held by syz-executor.0/18781: [ 1113.560720][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1113.579239][ T1153] 1 lock held by syz-executor.0/19411: [ 1113.585052][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1113.615521][ T1153] 1 lock held by syz-executor.0/19562: [ 1113.621132][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1113.630782][ T1153] 1 lock held by syz-executor.0/19612: [ 1113.643590][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1113.655123][ T1153] 1 lock held by syz-executor.0/19865: [ 1113.678132][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1113.690316][ T1153] 1 lock held by syz-executor.0/20821: [ 1113.703747][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1113.717193][ T1153] 1 lock held by syz-executor.0/21260: [ 1113.729970][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1113.757981][ T1153] 1 lock held by syz-executor.0/21264: [ 1113.765521][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1113.781651][ T1153] 1 lock held by syz-executor.0/21269: [ 1113.792173][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1113.803603][ T1153] 1 lock held by syz-executor.0/21311: [ 1113.816055][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1113.832271][ T1153] 1 lock held by syz-executor.0/21663: [ 1113.848089][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1113.863915][ T1153] 1 lock held by syz-executor.0/21793: 2020/07/26 21:23:08 executed programs: 7402 [ 1113.881317][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1113.904206][ T1153] 1 lock held by syz-executor.0/21920: [ 1113.909710][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1113.935456][ T1153] 1 lock held by syz-executor.0/22127: [ 1113.946240][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1113.964913][ T1153] 1 lock held by syz-executor.0/22179: [ 1113.970528][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1113.980136][ T1153] 1 lock held by syz-executor.0/22866: [ 1113.985972][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1114.002688][ T1153] 1 lock held by syz-executor.0/23280: [ 1114.010634][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1114.026826][ T1153] 1 lock held by syz-executor.0/23434: [ 1114.048629][ T1153] #0: ffff8880a90fc868 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_write+0xd9/0x1680 [ 1114.058536][ T1153] [ 1114.060980][ T1153] ============================================= [ 1114.060980][ T1153] [ 1114.069929][ T1153] NMI backtrace for cpu 0 [ 1114.074353][ T1153] CPU: 0 PID: 1153 Comm: khungtaskd Not tainted 5.8.0-rc6-syzkaller #0 [ 1114.082596][ T1153] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1114.092649][ T1153] Call Trace: [ 1114.096026][ T1153] dump_stack+0x1f0/0x31e [ 1114.100394][ T1153] nmi_cpu_backtrace+0x9f/0x180 [ 1114.105303][ T1153] ? arch_trigger_cpumask_backtrace+0x10/0x10 [ 1114.111364][ T1153] nmi_trigger_cpumask_backtrace+0x16a/0x280 [ 1114.117390][ T1153] watchdog+0xd65/0xdb0 [ 1114.121602][ T1153] kthread+0x37e/0x3a0 [ 1114.125666][ T1153] ? hungtask_pm_notify+0x50/0x50 [ 1114.130681][ T1153] ? kthread_blkcg+0xd0/0xd0 [ 1114.135469][ T1153] ret_from_fork+0x1f/0x30 [ 1114.139983][ T1153] Sending NMI from CPU 0 to CPUs 1: [ 1114.145738][ C1] NMI backtrace for cpu 1 [ 1114.145742][ C1] CPU: 1 PID: 25029 Comm: systemd-udevd Not tainted 5.8.0-rc6-syzkaller #0 [ 1114.145746][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1114.145750][ C1] RIP: 0010:__sanitizer_cov_trace_const_cmp1+0x90/0xa0 [ 1114.145757][ C1] Code: 3c 95 01 00 00 00 48 c7 04 f9 01 00 00 00 48 89 54 f9 08 48 c1 e0 03 48 83 c8 18 48 89 34 01 4c 89 44 f9 18 49 ff c2 4c 89 11 0f 1f 44 00 00 66 2e 0f 1f 84 00 00 00 00 00 4c 8b 04 24 65 48 [ 1114.145759][ C1] RSP: 0018:ffffc90002c0f718 EFLAGS: 00000293 [ 1114.145765][ C1] RAX: 0000000000000000 RBX: ffffffff8924f0b3 RCX: ffff888097c200c0 [ 1114.145769][ C1] RDX: ffff888097c200c0 RSI: 0000000000000000 RDI: 0000000000000000 [ 1114.145772][ C1] RBP: 0000000000000004 R08: ffffffff83bd0fee R09: ffffffff83bcd912 [ 1114.145776][ C1] R10: 0000000000000012 R11: ffff888097c200c0 R12: 0000000000000000 [ 1114.145779][ C1] R13: ffffc90002c0f8c5 R14: 00000000fffffffe R15: dffffc0000000000 [ 1114.145783][ C1] FS: 00007fd29fd408c0(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 1114.145786][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1114.145789][ C1] CR2: 00007ffc728d2000 CR3: 00000000948bc000 CR4: 00000000001406e0 [ 1114.145793][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1114.145796][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1114.145798][ C1] Call Trace: [ 1114.145800][ C1] string+0x9e/0x2c0 [ 1114.145803][ C1] vsnprintf+0xf36/0x1aa0 [ 1114.145805][ C1] tomoyo_supervisor+0xb1/0x1320 [ 1114.145808][ C1] ? kfree+0x141/0x220 [ 1114.145811][ C1] ? tomoyo_execute_permission+0x3d0/0x3d0 [ 1114.145813][ C1] tomoyo_check_open_permission+0x3f7/0x900 [ 1114.145816][ C1] security_file_open+0x50/0xc0 [ 1114.145819][ C1] do_dentry_open+0x3cd/0x1070 [ 1114.145821][ C1] path_openat+0x278d/0x37f0 [ 1114.145824][ C1] ? trace_mm_page_alloc+0x195/0x1f0 [ 1114.145826][ C1] do_filp_open+0x191/0x3a0 [ 1114.145829][ C1] ? _raw_spin_unlock+0x24/0x40 [ 1114.145831][ C1] ? __alloc_fd+0x55c/0x600 [ 1114.145834][ C1] do_sys_openat2+0x463/0x770 [ 1114.145836][ C1] __x64_sys_open+0x1af/0x1e0 [ 1114.145839][ C1] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1114.145841][ C1] do_syscall_64+0x73/0xe0 [ 1114.145844][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1114.145846][ C1] RIP: 0033:0x7fd29ebb36f0 [ 1114.145853][ C1] Code: 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 83 3d 19 30 2c 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 fe 9d 01 00 48 89 04 24 [ 1114.145856][ C1] RSP: 002b:00007ffc728d3d38 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 1114.145862][ C1] RAX: ffffffffffffffda RBX: 00005650b551e280 RCX: 00007fd29ebb36f0 [ 1114.145866][ C1] RDX: 00000000000001b6 RSI: 0000000000080000 RDI: 00007ffc728d3ee0 [ 1114.145869][ C1] RBP: 0000000000000008 R08: 0000000000000008 R09: 0000000000000001 [ 1114.145872][ C1] R10: 0000000000080000 R11: 0000000000000246 R12: 00005650b513868a [ 1114.145876][ C1] R13: 0000000000000001 R14: 00007ffc728d3ee0 R15: 00007ffc728d3f40 [ 1114.345314][ T1153] Kernel panic - not syncing: hung_task: blocked tasks [ 1114.450725][ T1153] CPU: 0 PID: 1153 Comm: khungtaskd Not tainted 5.8.0-rc6-syzkaller #0 [ 1114.458961][ T1153] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1114.469016][ T1153] Call Trace: [ 1114.472303][ T1153] dump_stack+0x1f0/0x31e [ 1114.476723][ T1153] panic+0x264/0x7a0 [ 1114.480620][ T1153] ? nmi_trigger_cpumask_backtrace+0x206/0x280 [ 1114.486772][ T1153] watchdog+0xda5/0xdb0 [ 1114.490938][ T1153] kthread+0x37e/0x3a0 [ 1114.494999][ T1153] ? hungtask_pm_notify+0x50/0x50 [ 1114.500039][ T1153] ? kthread_blkcg+0xd0/0xd0 [ 1114.504630][ T1153] ret_from_fork+0x1f/0x30 [ 1114.510219][ T1153] Kernel Offset: disabled [ 1114.514551][ T1153] Rebooting in 86400 seconds..