[ 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 '10.128.0.238' (ECDSA) to the list of known hosts. syzkaller login: [ 801.604867][ T8449] chnl_net:caif_netlink_parms(): no params data found [ 801.659980][ T8449] bridge0: port 1(bridge_slave_0) entered blocking state [ 801.667941][ T8449] bridge0: port 1(bridge_slave_0) entered disabled state [ 801.675931][ T8449] device bridge_slave_0 entered promiscuous mode [ 801.685909][ T8449] bridge0: port 2(bridge_slave_1) entered blocking state [ 801.693490][ T8449] bridge0: port 2(bridge_slave_1) entered disabled state [ 801.701696][ T8449] device bridge_slave_1 entered promiscuous mode [ 801.721990][ T8449] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 801.732860][ T8449] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 801.755475][ T8449] team0: Port device team_slave_0 added [ 801.762716][ T8449] team0: Port device team_slave_1 added [ 801.781579][ T8449] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 801.788850][ T8449] 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. [ 801.815973][ T8449] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 801.829958][ T8449] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 801.837502][ T8449] 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. [ 801.863511][ T8449] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 801.893070][ T8449] device hsr_slave_0 entered promiscuous mode [ 801.900484][ T8449] device hsr_slave_1 entered promiscuous mode [ 802.001196][ T8449] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 802.012698][ T8449] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 802.022720][ T8449] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 802.033940][ T8449] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 802.059716][ T8449] bridge0: port 2(bridge_slave_1) entered blocking state [ 802.067032][ T8449] bridge0: port 2(bridge_slave_1) entered forwarding state [ 802.074918][ T8449] bridge0: port 1(bridge_slave_0) entered blocking state [ 802.082045][ T8449] bridge0: port 1(bridge_slave_0) entered forwarding state [ 802.124955][ T8449] 8021q: adding VLAN 0 to HW filter on device bond0 [ 802.140272][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 802.151954][ T20] bridge0: port 1(bridge_slave_0) entered disabled state [ 802.161499][ T20] bridge0: port 2(bridge_slave_1) entered disabled state [ 802.170118][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 802.185228][ T8449] 8021q: adding VLAN 0 to HW filter on device team0 [ 802.199009][ T8576] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 802.207814][ T8576] bridge0: port 1(bridge_slave_0) entered blocking state [ 802.215054][ T8576] bridge0: port 1(bridge_slave_0) entered forwarding state [ 802.237489][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 802.246310][ T20] bridge0: port 2(bridge_slave_1) entered blocking state [ 802.253492][ T20] bridge0: port 2(bridge_slave_1) entered forwarding state [ 802.262615][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 802.275001][ T8658] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 802.284203][ T8658] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 802.299362][ T8658] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 802.310470][ T8383] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 802.320682][ T8449] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 802.340423][ T8576] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 802.348784][ T8576] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 802.361935][ T8449] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 802.381939][ T8576] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 802.401336][ T8576] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 802.410489][ T8576] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 802.419285][ T8576] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 802.431924][ T8449] device veth0_vlan entered promiscuous mode [ 802.443466][ T8449] device veth1_vlan entered promiscuous mode [ 802.464481][ T8383] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 802.473451][ T8383] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 802.482360][ T8383] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 802.493998][ T8449] device veth0_macvtap entered promiscuous mode [ 802.504665][ T8449] device veth1_macvtap entered promiscuous mode [ 802.521694][ T8449] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 802.531115][ T8576] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 802.541892][ T8576] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 802.554290][ T8449] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 802.562292][ T8383] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 802.573578][ T8449] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 802.582621][ T8449] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 802.591827][ T8449] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 802.604687][ T8449] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program executing program executing program executing program [ 864.462909][ C1] hrtimer: interrupt took 61805714449 ns executing program executing program executing program executing program executing program executing program executing program [ 991.645209][ C0] watchdog: BUG: soft lockup - CPU#0 stuck for 118s! [syz-executor433:8673] [ 991.654036][ C0] Modules linked in: [ 991.657936][ C0] irq event stamp: 28124 [ 991.662171][ C0] hardirqs last enabled at (28123): [] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 991.673115][ C0] hardirqs last disabled at (28124): [] sysvec_apic_timer_interrupt+0xb/0xc0 [ 991.684069][ C0] softirqs last enabled at (2696): [] __irq_exit_rcu+0x16e/0x1c0 [ 991.693484][ C0] softirqs last disabled at (2099): [] __irq_exit_rcu+0x16e/0x1c0 [ 991.703472][ C0] CPU: 0 PID: 8673 Comm: syz-executor433 Not tainted 5.14.0-rc1-syzkaller #0 [ 991.712236][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 991.722298][ C0] RIP: 0010:smp_call_function_many_cond+0x452/0xc20 [ 991.729113][ C0] Code: 0b 00 85 ed 74 4d 48 b8 00 00 00 00 00 fc ff df 4d 89 f4 4c 89 f5 49 c1 ec 03 83 e5 07 49 01 c4 83 c5 03 e8 40 48 0b 00 f3 90 <41> 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 33 06 00 00 8b 43 08 31 [ 991.748738][ C0] RSP: 0018:ffffc90001bdfb20 EFLAGS: 00000293 [ 991.754811][ C0] RAX: 0000000000000000 RBX: ffff8880b9d570c0 RCX: 0000000000000000 [ 991.762781][ C0] RDX: ffff8880386ab880 RSI: ffffffff816a4130 RDI: 0000000000000003 [ 991.770751][ C0] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 991.778805][ C0] R10: ffffffff816a4156 R11: 0000000000000000 R12: ffffed10173aae19 [ 991.786792][ C0] R13: 0000000000000001 R14: ffff8880b9d570c8 R15: 0000000000000001 [ 991.794777][ C0] FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 [ 991.803825][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 991.810552][ C0] CR2: 00000000004bd370 CR3: 0000000035e11000 CR4: 00000000001506f0 [ 991.818525][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 991.826499][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 991.834474][ C0] Call Trace: [ 991.837847][ C0] ? leave_mm+0x30/0x30 [ 991.842072][ C0] ? leave_mm+0x30/0x30 [ 991.846232][ C0] on_each_cpu_cond_mask+0x56/0xa0 [ 991.851357][ C0] flush_tlb_mm_range+0x1d8/0x230 [ 991.856391][ C0] tlb_finish_mmu+0x3e7/0x8c0 [ 991.861113][ C0] exit_mmap+0x1ea/0x620 [ 991.865371][ C0] ? __ia32_sys_remap_file_pages+0x150/0x150 [ 991.871370][ C0] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 991.877748][ C0] __mmput+0x122/0x470 [ 991.881854][ C0] mmput+0x58/0x60 [ 991.885668][ C0] do_exit+0xae2/0x2a60 [ 991.890090][ C0] ? __context_tracking_exit+0xb8/0xe0 [ 991.895595][ C0] ? lock_downgrade+0x6e0/0x6e0 [ 991.900460][ C0] ? lock_downgrade+0x6e0/0x6e0 [ 991.905317][ C0] ? mm_update_next_owner+0x7a0/0x7a0 [ 991.910700][ C0] do_group_exit+0x125/0x310 [ 991.915379][ C0] __x64_sys_exit_group+0x3a/0x50 [ 991.920418][ C0] do_syscall_64+0x35/0xb0 [ 991.924853][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 991.930747][ C0] RIP: 0033:0x4427b9 [ 991.934796][ C0] Code: Unable to access opcode bytes at RIP 0x44278f. [ 991.941651][ C0] RSP: 002b:00007ffe4e3bd608 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 991.950079][ C0] RAX: ffffffffffffffda RBX: 00000000004ba3d0 RCX: 00000000004427b9 [ 991.958056][ C0] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 991.966026][ C0] RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 000000000000000d [ 991.974004][ C0] R10: 000000000000000d R11: 0000000000000246 R12: 00000000004ba3d0 [ 991.981981][ C0] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 991.989973][ C0] Kernel panic - not syncing: softlockup: hung tasks [ 991.996669][ C0] CPU: 0 PID: 8673 Comm: syz-executor433 Tainted: G L 5.14.0-rc1-syzkaller #0 [ 992.006831][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 992.016881][ C0] Call Trace: [ 992.020169][ C0] [ 992.023019][ C0] dump_stack_lvl+0xcd/0x134 [ 992.027660][ C0] panic+0x306/0x73d [ 992.031579][ C0] ? __warn_printk+0xf3/0xf3 [ 992.036193][ C0] ? watchdog_timer_fn.cold+0x5/0x25 [ 992.041499][ C0] watchdog_timer_fn.cold+0x16/0x25 [ 992.046713][ C0] ? softlockup_fn+0xa0/0xa0 [ 992.051307][ C0] __hrtimer_run_queues+0x1c0/0xe50 [ 992.056625][ C0] ? hrtimer_sleeper_start_expires+0x80/0x80 [ 992.062614][ C0] ? ktime_get_update_offsets_now+0x3eb/0x5c0 [ 992.068693][ C0] hrtimer_interrupt+0x330/0xa00 [ 992.073657][ C0] __sysvec_apic_timer_interrupt+0x146/0x530 [ 992.079854][ C0] sysvec_apic_timer_interrupt+0x8e/0xc0 [ 992.085498][ C0] [ 992.088564][ C0] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 992.094555][ C0] RIP: 0010:smp_call_function_many_cond+0x452/0xc20 [ 992.101160][ C0] Code: 0b 00 85 ed 74 4d 48 b8 00 00 00 00 00 fc ff df 4d 89 f4 4c 89 f5 49 c1 ec 03 83 e5 07 49 01 c4 83 c5 03 e8 40 48 0b 00 f3 90 <41> 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 33 06 00 00 8b 43 08 31 [ 992.120771][ C0] RSP: 0018:ffffc90001bdfb20 EFLAGS: 00000293 [ 992.126840][ C0] RAX: 0000000000000000 RBX: ffff8880b9d570c0 RCX: 0000000000000000 [ 992.134812][ C0] RDX: ffff8880386ab880 RSI: ffffffff816a4130 RDI: 0000000000000003 [ 992.142786][ C0] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 992.150754][ C0] R10: ffffffff816a4156 R11: 0000000000000000 R12: ffffed10173aae19 [ 992.158724][ C0] R13: 0000000000000001 R14: ffff8880b9d570c8 R15: 0000000000000001 [ 992.166700][ C0] ? smp_call_function_many_cond+0x476/0xc20 [ 992.172782][ C0] ? smp_call_function_many_cond+0x450/0xc20 [ 992.178781][ C0] ? leave_mm+0x30/0x30 [ 992.182943][ C0] ? leave_mm+0x30/0x30 [ 992.187105][ C0] on_each_cpu_cond_mask+0x56/0xa0 [ 992.192227][ C0] flush_tlb_mm_range+0x1d8/0x230 [ 992.197264][ C0] tlb_finish_mmu+0x3e7/0x8c0 [ 992.201951][ C0] exit_mmap+0x1ea/0x620 [ 992.206214][ C0] ? __ia32_sys_remap_file_pages+0x150/0x150 [ 992.212212][ C0] ? __sanitizer_cov_trace_const_cmp1+0x22/0x80 [ 992.218468][ C0] __mmput+0x122/0x470 [ 992.222548][ C0] mmput+0x58/0x60 [ 992.226294][ C0] do_exit+0xae2/0x2a60 [ 992.230465][ C0] ? __context_tracking_exit+0xb8/0xe0 [ 992.235937][ C0] ? lock_downgrade+0x6e0/0x6e0 [ 992.240789][ C0] ? lock_downgrade+0x6e0/0x6e0 [ 992.245665][ C0] ? mm_update_next_owner+0x7a0/0x7a0 [ 992.251051][ C0] do_group_exit+0x125/0x310 [ 992.255755][ C0] __x64_sys_exit_group+0x3a/0x50 [ 992.260782][ C0] do_syscall_64+0x35/0xb0 [ 992.265206][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 992.271375][ C0] RIP: 0033:0x4427b9 [ 992.275269][ C0] Code: Unable to access opcode bytes at RIP 0x44278f. [ 992.282104][ C0] RSP: 002b:00007ffe4e3bd608 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 992.290953][ C0] RAX: ffffffffffffffda RBX: 00000000004ba3d0 RCX: 00000000004427b9 [ 992.298923][ C0] RDX: 000000000000003c RSI: 00000000000000e7 RDI: 0000000000000000 [ 992.306890][ C0] RBP: 0000000000000000 R08: ffffffffffffffc0 R09: 000000000000000d [ 992.314866][ C0] R10: 000000000000000d R11: 0000000000000246 R12: 00000000004ba3d0 [ 992.322841][ C0] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 993.478197][ C0] Shutting down cpus with NMI [ 993.484409][ C0] Kernel Offset: disabled [ 993.488806][ C0] Rebooting in 86400 seconds..