[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.55' (ECDSA) to the list of known hosts. 2020/11/17 22:11:24 parsed 1 programs 2020/11/17 22:11:24 executed programs: 0 syzkaller login: [ 1587.638000][ T8485] IPVS: ftp: loaded support on port[0] = 21 [ 1587.782072][ T8485] chnl_net:caif_netlink_parms(): no params data found [ 1587.840502][ T8485] bridge0: port 1(bridge_slave_0) entered blocking state [ 1587.848758][ T8485] bridge0: port 1(bridge_slave_0) entered disabled state [ 1587.856770][ T8485] device bridge_slave_0 entered promiscuous mode [ 1587.868860][ T8485] bridge0: port 2(bridge_slave_1) entered blocking state [ 1587.876032][ T8485] bridge0: port 2(bridge_slave_1) entered disabled state [ 1587.884471][ T8485] device bridge_slave_1 entered promiscuous mode [ 1587.905706][ T8485] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 1587.916986][ T8485] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 1587.940781][ T8485] team0: Port device team_slave_0 added [ 1587.948927][ T8485] team0: Port device team_slave_1 added [ 1587.966673][ T8485] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 1587.973716][ T8485] 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. [ 1587.999935][ T8485] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 1588.012688][ T8485] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 1588.019781][ T8485] 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. [ 1588.045852][ T8485] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 1588.076125][ T8485] device hsr_slave_0 entered promiscuous mode [ 1588.082989][ T8485] device hsr_slave_1 entered promiscuous mode [ 1588.190338][ T8485] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 1588.202449][ T8485] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 1588.212903][ T8485] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 1588.223823][ T8485] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 1588.251086][ T8485] bridge0: port 2(bridge_slave_1) entered blocking state [ 1588.258345][ T8485] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1588.266224][ T8485] bridge0: port 1(bridge_slave_0) entered blocking state [ 1588.273564][ T8485] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1588.324341][ T8485] 8021q: adding VLAN 0 to HW filter on device bond0 [ 1588.338938][ T8626] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 1588.351004][ T8626] bridge0: port 1(bridge_slave_0) entered disabled state [ 1588.360388][ T8626] bridge0: port 2(bridge_slave_1) entered disabled state [ 1588.371388][ T8626] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 1588.385835][ T8485] 8021q: adding VLAN 0 to HW filter on device team0 [ 1588.399830][ T8462] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 1588.408433][ T8462] bridge0: port 1(bridge_slave_0) entered blocking state [ 1588.415496][ T8462] bridge0: port 1(bridge_slave_0) entered forwarding state [ 1588.438267][ T8462] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 1588.446761][ T8462] bridge0: port 2(bridge_slave_1) entered blocking state [ 1588.453987][ T8462] bridge0: port 2(bridge_slave_1) entered forwarding state [ 1588.463387][ T8462] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 1588.475562][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 1588.484139][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 1588.497409][ T8626] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 1588.510939][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 1588.524480][ T8485] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 1588.548864][ T8485] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 1588.558192][ T8706] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 1588.565899][ T8706] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 1588.589377][ T8706] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 1588.606720][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 1588.616286][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 1588.624692][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 1588.636570][ T8485] device veth0_vlan entered promiscuous mode [ 1588.649674][ T8485] device veth1_vlan entered promiscuous mode [ 1588.673309][ T8706] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 1588.682227][ T8706] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 1588.691351][ T8706] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 1588.703065][ T8485] device veth0_macvtap entered promiscuous mode [ 1588.713757][ T8485] device veth1_macvtap entered promiscuous mode [ 1588.733827][ T8485] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 1588.741507][ T8706] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 1588.751570][ T8706] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 1588.764528][ T8485] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 1588.772988][ T8706] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 1588.781792][ T8706] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 1588.796099][ T8485] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 1588.805554][ T8485] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 1588.815827][ T8485] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 1588.825361][ T8485] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 1588.929917][ T8] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 1588.941907][ T8] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 1588.969241][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 1588.985892][ T8488] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 1588.996502][ T8488] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 1589.006228][ T8706] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 1589.589103][ T8706] Bluetooth: hci0: command 0x0409 tx timeout 2020/11/17 22:11:29 executed programs: 49 [ 1591.668186][ T8706] Bluetooth: hci0: command 0x041b tx timeout [ 1593.747570][ T8706] Bluetooth: hci0: command 0x040f tx timeout [ 1595.827286][ T8706] Bluetooth: hci0: command 0x0419 tx timeout [ 1711.678300][ T8708] Bluetooth: hci0: command 0x0406 tx timeout [ 1742.877530][ T1654] INFO: task syz-executor.0:9557 blocked for more than 143 seconds. [ 1742.885758][ T1654] Not tainted 5.10.0-rc4-next-20201117-syzkaller #0 [ 1742.894319][ T1654] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 1742.906107][ T1654] task:syz-executor.0 state:D stack:28584 pid: 9557 ppid: 8485 flags:0x00004002 [ 1742.915576][ T1654] Call Trace: [ 1742.919543][ T1654] __schedule+0x890/0x2030 [ 1742.923987][ T1654] ? io_schedule_timeout+0x140/0x140 [ 1742.929798][ T1654] ? lockdep_hardirqs_on+0x79/0x100 [ 1742.935020][ T1654] ? _raw_spin_unlock_irq+0x2a/0x40 [ 1742.941347][ T1654] schedule+0xcf/0x270 [ 1742.945546][ T1654] __io_uring_files_cancel+0xc4d/0x14b0 [ 1742.951578][ T1654] ? __io_uring_free+0x1d0/0x1d0 [ 1742.956849][ T1654] ? exit_sem+0x112/0x1e80 [ 1742.961547][ T1654] ? find_held_lock+0x2d/0x110 [ 1742.966365][ T1654] ? add_wait_queue+0x150/0x150 [ 1742.972407][ T1654] ? copy_semundo+0x2f0/0x2f0 [ 1742.977851][ T1654] exit_files+0xe4/0x170 [ 1742.982160][ T1654] do_exit+0xb61/0x29f0 [ 1742.986318][ T1654] ? find_held_lock+0x2d/0x110 [ 1742.992362][ T1654] ? mm_update_next_owner+0x7a0/0x7a0 [ 1742.997923][ T1654] ? get_signal+0x2f6/0x1f70 [ 1743.002523][ T1654] ? lock_downgrade+0x6d0/0x6d0 [ 1743.007562][ T1654] do_group_exit+0x125/0x310 [ 1743.012606][ T1654] get_signal+0x3ea/0x1f70 [ 1743.017072][ T1654] ? futex_exit_release+0x220/0x220 [ 1743.023644][ T1654] ? __might_fault+0xd3/0x180 [ 1743.028557][ T1654] arch_do_signal_or_restart+0x2a6/0x1ea0 [ 1743.034345][ T1654] ? _copy_to_user+0xdc/0x150 [ 1743.039141][ T1654] ? copy_siginfo_to_user32+0xa0/0xa0 [ 1743.044532][ T1654] ? __do_sys_futex+0x2a2/0x470 [ 1743.049511][ T1654] ? do_futex+0x1a60/0x1a60 [ 1743.054076][ T1654] exit_to_user_mode_prepare+0x124/0x200 [ 1743.060512][ T1654] syscall_exit_to_user_mode+0x38/0x260 [ 1743.066075][ T1654] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1743.073696][ T1654] RIP: 0033:0x45deb9 [ 1743.077943][ T1654] Code: Unable to access opcode bytes at RIP 0x45de8f. [ 1743.084797][ T1654] RSP: 002b:00007fa68397ccf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 1743.094065][ T1654] RAX: fffffffffffffe00 RBX: 000000000118bf28 RCX: 000000000045deb9 [ 1743.102446][ T1654] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000118bf28 [ 1743.110829][ T1654] RBP: 000000000118bf20 R08: 0000000000000000 R09: 0000000000000000 [ 1743.119216][ T1654] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118bf2c [ 1743.127854][ T1654] R13: 00007fff50acc9af R14: 00007fa68397d9c0 R15: 000000000118bf2c [ 1743.135866][ T1654] [ 1743.135866][ T1654] Showing all locks held in the system: [ 1743.144000][ T1654] 1 lock held by khungtaskd/1654: [ 1743.149931][ T1654] #0: ffffffff8b339ca0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 [ 1743.160837][ T1654] 1 lock held by in:imklog/8177: [ 1743.165766][ T1654] #0: ffff88801cf22d70 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 [ 1743.176599][ T1654] [ 1743.179329][ T1654] ============================================= [ 1743.179329][ T1654] [ 1743.188417][ T1654] NMI backtrace for cpu 1 [ 1743.192754][ T1654] CPU: 1 PID: 1654 Comm: khungtaskd Not tainted 5.10.0-rc4-next-20201117-syzkaller #0 [ 1743.202268][ T1654] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1743.212663][ T1654] Call Trace: [ 1743.215981][ T1654] dump_stack+0x107/0x163 [ 1743.220383][ T1654] nmi_cpu_backtrace.cold+0x44/0xd7 [ 1743.225644][ T1654] ? lapic_can_unplug_cpu+0x80/0x80 [ 1743.230873][ T1654] nmi_trigger_cpumask_backtrace+0x1b3/0x230 [ 1743.236885][ T1654] watchdog+0xd89/0xf30 [ 1743.241037][ T1654] ? trace_sched_process_hang+0x280/0x280 [ 1743.246787][ T1654] kthread+0x3af/0x4a0 [ 1743.250843][ T1654] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 1743.256757][ T1654] ret_from_fork+0x1f/0x30 [ 1743.261478][ T1654] Sending NMI from CPU 1 to CPUs 0: [ 1743.267305][ C0] NMI backtrace for cpu 0 [ 1743.267314][ C0] CPU: 0 PID: 4887 Comm: systemd-journal Not tainted 5.10.0-rc4-next-20201117-syzkaller #0 [ 1743.267321][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1743.267326][ C0] RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x4/0x20 [ 1743.267338][ C0] Code: 84 00 00 00 00 00 48 8b 0c 24 0f b7 d6 0f b7 f7 bf 03 00 00 00 e9 cc fe ff ff 66 90 66 2e 0f 1f 84 00 00 00 00 00 48 8b 0c 24 <89> f2 89 fe bf 05 00 00 00 e9 ae fe ff ff 0f 1f 40 00 66 2e 0f 1f [ 1743.267344][ C0] RSP: 0018:ffffc90000f0fe90 EFLAGS: 00000206 [ 1743.267355][ C0] RAX: 0000000000000000 RBX: 0000000000080042 RCX: ffffffff81bd2a21 [ 1743.267361][ C0] RDX: ffff88802594b500 RSI: 0000000000000040 RDI: 0000000000000000 [ 1743.267367][ C0] RBP: 1ffff920001e1fd3 R08: 0000000000000000 R09: ffff8880110f3c17 [ 1743.267373][ C0] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000040 [ 1743.267379][ C0] R13: 00000000000001a0 R14: 00005616bdf3c270 R15: 0000000000000000 [ 1743.267385][ C0] FS: 00007f934ff098c0(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000 [ 1743.267391][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 1743.267397][ C0] CR2: 0000000000a47b58 CR3: 0000000026162000 CR4: 00000000001506f0 [ 1743.267403][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 1743.267409][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 1743.267412][ C0] Call Trace: [ 1743.267417][ C0] __x64_sys_open+0x171/0x1c0 [ 1743.267421][ C0] ? do_sys_open+0x140/0x140 [ 1743.267426][ C0] ? __secure_computing+0x104/0x360 [ 1743.267430][ C0] do_syscall_64+0x2d/0x70 [ 1743.267435][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 1743.267439][ C0] RIP: 0033:0x7f934f499840 [ 1743.267451][ C0] Code: 73 01 c3 48 8b 0d 68 77 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 89 bb 20 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 1e f6 ff ff 48 89 04 24 [ 1743.267456][ C0] RSP: 002b:00007ffc6cf30568 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 1743.267467][ C0] RAX: ffffffffffffffda RBX: 00007ffc6cf30870 RCX: 00007f934f499840 [ 1743.267472][ C0] RDX: 00000000000001a0 RSI: 0000000000080042 RDI: 00005616bdf3c270 [ 1743.267478][ C0] RBP: 000000000000000d R08: 0000000000000000 R09: 00000000ffffffff [ 1743.267484][ C0] R10: 0000000000000069 R11: 0000000000000246 R12: 00000000ffffffff [ 1743.267490][ C0] R13: 00005616bdf30040 R14: 00007ffc6cf30830 R15: 00005616bdf3cef0 [ 1743.267908][ T1654] Kernel panic - not syncing: hung_task: blocked tasks [ 1743.510416][ T1654] CPU: 1 PID: 1654 Comm: khungtaskd Not tainted 5.10.0-rc4-next-20201117-syzkaller #0 [ 1743.519932][ T1654] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 1743.529979][ T1654] Call Trace: [ 1743.533292][ T1654] dump_stack+0x107/0x163 [ 1743.537667][ T1654] panic+0x306/0x73d [ 1743.541564][ T1654] ? __warn_printk+0xf3/0xf3 [ 1743.546139][ T1654] ? lapic_can_unplug_cpu+0x80/0x80 [ 1743.551319][ T1654] ? preempt_schedule_thunk+0x16/0x18 [ 1743.556691][ T1654] ? watchdog.cold+0x22d/0x248 [ 1743.561883][ T1654] ? watchdog+0xc59/0xf30 [ 1743.566204][ T1654] watchdog.cold+0x23e/0x248 [ 1743.570792][ T1654] ? trace_sched_process_hang+0x280/0x280 [ 1743.576495][ T1654] kthread+0x3af/0x4a0 [ 1743.580547][ T1654] ? kthread_create_worker_on_cpu+0xf0/0xf0 [ 1743.586436][ T1654] ret_from_fork+0x1f/0x30 [ 1743.591424][ T1654] Kernel Offset: disabled [ 1743.595752][ T1654] Rebooting in 86400 seconds..