[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.39' (ECDSA) to the list of known hosts. syzkaller login: [ 313.494578][ T6798] IPVS: ftp: loaded support on port[0] = 21 [ 313.571971][ T6798] chnl_net:caif_netlink_parms(): no params data found [ 313.621669][ T6798] bridge0: port 1(bridge_slave_0) entered blocking state [ 313.629609][ T6798] bridge0: port 1(bridge_slave_0) entered disabled state [ 313.637380][ T6798] device bridge_slave_0 entered promiscuous mode [ 313.646773][ T6798] bridge0: port 2(bridge_slave_1) entered blocking state [ 313.654377][ T6798] bridge0: port 2(bridge_slave_1) entered disabled state [ 313.662428][ T6798] device bridge_slave_1 entered promiscuous mode [ 313.682496][ T6798] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 313.693253][ T6798] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 313.714741][ T6798] team0: Port device team_slave_0 added [ 313.722073][ T6798] team0: Port device team_slave_1 added [ 313.738681][ T6798] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 313.745814][ T6798] 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. [ 313.772467][ T6798] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 313.786095][ T6798] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 313.793506][ T6798] 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. [ 313.819906][ T6798] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 313.891679][ T6798] device hsr_slave_0 entered promiscuous mode [ 313.948834][ T6798] device hsr_slave_1 entered promiscuous mode [ 314.071097][ T6798] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 314.132018][ T6798] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 314.180550][ T6798] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 314.220424][ T6798] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 314.399888][ T6798] bridge0: port 2(bridge_slave_1) entered blocking state [ 314.407085][ T6798] bridge0: port 2(bridge_slave_1) entered forwarding state [ 314.415079][ T6798] bridge0: port 1(bridge_slave_0) entered blocking state [ 314.422208][ T6798] bridge0: port 1(bridge_slave_0) entered forwarding state [ 314.524355][ T6798] 8021q: adding VLAN 0 to HW filter on device bond0 [ 314.536450][ T2854] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 314.546529][ T2854] bridge0: port 1(bridge_slave_0) entered disabled state [ 314.556438][ T2854] bridge0: port 2(bridge_slave_1) entered disabled state [ 314.564798][ T2854] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 314.577792][ T6798] 8021q: adding VLAN 0 to HW filter on device team0 [ 314.587804][ T7005] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 314.596793][ T7005] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 314.605521][ T7005] bridge0: port 1(bridge_slave_0) entered blocking state [ 314.612618][ T7005] bridge0: port 1(bridge_slave_0) entered forwarding state [ 314.623866][ T6919] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 314.632552][ T6919] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 314.641206][ T6919] bridge0: port 2(bridge_slave_1) entered blocking state [ 314.648469][ T6919] bridge0: port 2(bridge_slave_1) entered forwarding state [ 314.658750][ T7005] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 314.679290][ T6919] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 314.688191][ T6919] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 314.697606][ T6919] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 314.706372][ T6919] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 314.715329][ T6919] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 314.724045][ T6919] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 314.733107][ T6919] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 314.747073][ T6798] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 314.760072][ T6798] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 314.767903][ T7018] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 314.776027][ T7018] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 314.784523][ T7018] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 314.804563][ T7005] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 314.812416][ T7005] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 314.825608][ T6798] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 314.844710][ T7005] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 314.853952][ T7005] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 314.874316][ T6798] device veth0_vlan entered promiscuous mode [ 314.881682][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 314.890875][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 314.901335][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 314.909514][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 314.921591][ T6798] device veth1_vlan entered promiscuous mode [ 314.941804][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 314.950754][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 314.959849][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 314.968175][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 314.980685][ T6798] device veth0_macvtap entered promiscuous mode [ 314.990348][ T6798] device veth1_macvtap entered promiscuous mode [ 315.006854][ T6798] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 315.014306][ T7018] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 315.023458][ T7018] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 315.031806][ T7018] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 315.040938][ T7018] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 315.053115][ T6798] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 315.060447][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 315.070267][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 315.081394][ T6798] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 315.090573][ T6798] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 315.099758][ T6798] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 315.108994][ T6798] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program [ 385.237051][ T0] NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #08!!! [ 420.254304][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 420.261474][ C1] rcu: 0-...0: (0 ticks this GP) idle=b3e/1/0x4000000000000000 softirq=8208/8208 fqs=5249 [ 420.271726][ C1] (detected by 1, t=10502 jiffies, g=7773, q=3572) [ 420.278306][ C1] Sending NMI from CPU 1 to CPUs 0: [ 420.284621][ C1] NMI backtrace for cpu 0 [ 420.284630][ C1] CPU: 0 PID: 7020 Comm: syz-executor052 Not tainted 5.8.0-rc5-next-20200716-syzkaller #0 [ 420.284638][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 420.284643][ C1] RIP: 0010:__lock_acquire+0xe3d/0x56e0 [ 420.284658][ C1] Code: ff e9 d3 f2 ff ff 48 8b 6c 24 70 e8 6d fe 92 06 85 c0 0f 85 10 05 00 00 45 31 ff 48 b8 00 00 00 00 00 fc ff df 48 8b 5c 24 20 <48> c7 04 03 00 00 00 00 48 8b 84 24 e8 00 00 00 65 48 2b 04 25 28 [ 420.284663][ C1] RSP: 0018:ffffc90000007b20 EFLAGS: 00000083 [ 420.284674][ C1] RAX: dffffc0000000000 RBX: 1ffff92000000f76 RCX: 0000000000000001 [ 420.284681][ C1] RDX: 1ffff110113dc152 RSI: 0000000000000008 RDI: ffffffff8c061398 [ 420.284688][ C1] RBP: ffff888089ee0a98 R08: 0000000000000000 R09: ffffffff8c654abf [ 420.284695][ C1] R10: fffffbfff18ca957 R11: 0000000000000000 R12: ffff888089ee01c0 [ 420.284701][ C1] R13: dffffc0000000000 R14: a518158209ab17b1 R15: 0000000000000001 [ 420.284709][ C1] FS: 00007f43ad2fc700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 420.284715][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 420.284721][ C1] CR2: 0000000020000600 CR3: 00000000a35e6000 CR4: 00000000001506f0 [ 420.284728][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 420.284735][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 420.284739][ C1] Call Trace: [ 420.284742][ C1] [ 420.284748][ C1] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 420.284753][ C1] ? debug_object_deactivate+0x101/0x300 [ 420.284758][ C1] ? find_held_lock+0x2d/0x110 [ 420.284763][ C1] ? debug_object_deactivate+0x264/0x300 [ 420.284767][ C1] lock_acquire+0x1f1/0xad0 [ 420.284772][ C1] ? advance_sched+0x4f/0x990 [ 420.284777][ C1] ? lock_release+0x8d0/0x8d0 [ 420.284781][ C1] ? trace_hardirqs_off+0x27/0x210 [ 420.284786][ C1] ? find_held_lock+0x2d/0x110 [ 420.284791][ C1] ? __hrtimer_run_queues+0x5d1/0xfc0 [ 420.284796][ C1] _raw_spin_lock+0x2a/0x40 [ 420.284801][ C1] ? advance_sched+0x4f/0x990 [ 420.284805][ C1] advance_sched+0x4f/0x990 [ 420.284810][ C1] __hrtimer_run_queues+0x6a9/0xfc0 [ 420.284815][ C1] ? taprio_dequeue_soft+0xa40/0xa40 [ 420.284821][ C1] ? hrtimer_sleeper_start_expires+0x80/0x80 [ 420.284826][ C1] ? ktime_get_update_offsets_now+0x1c4/0x250 [ 420.284831][ C1] hrtimer_interrupt+0x32a/0x930 [ 420.284837][ C1] __sysvec_apic_timer_interrupt+0x142/0x5e0 [ 420.284841][ C1] asm_call_on_stack+0xf/0x20 [ 420.284845][ C1] [ 420.284850][ C1] sysvec_apic_timer_interrupt+0xe0/0x120 [ 420.284856][ C1] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 420.284861][ C1] RIP: 0010:on_each_cpu+0x149/0x240 [ 420.284875][ C1] Code: 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 e6 00 00 00 48 83 3d 87 c1 4b 08 00 0f 84 af 00 00 00 e8 5c ef 0a 00 48 89 df 57 9d <0f> 1f 44 00 00 e8 4d ef 0a 00 bf 01 00 00 00 e8 f3 57 e6 ff 31 ff [ 420.284880][ C1] RSP: 0018:ffffc90001d57d70 EFLAGS: 00000293 [ 420.284890][ C1] RAX: 0000000000000000 RBX: 0000000000000293 RCX: 0000000000000000 [ 420.284897][ C1] RDX: ffff888089ee01c0 RSI: ffffffff81694084 RDI: 0000000000000293 [ 420.284903][ C1] RBP: 0000000000000200 R08: 0000000000000000 R09: 0000000000000000 [ 420.284910][ C1] R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 [ 420.284917][ C1] R13: 0000000000000000 R14: ffffc90001d57ed0 R15: ffffffffa0eac704 [ 420.284922][ C1] ? on_each_cpu+0x144/0x240 [ 420.284926][ C1] clock_was_set+0x18/0x20 [ 420.284931][ C1] do_settimeofday64+0x350/0x4e0 [ 420.284936][ C1] ? change_clocksource+0x200/0x200 [ 420.284940][ C1] ? capable+0xdd/0x100 [ 420.284944][ C1] do_sys_settimeofday64+0x1de/0x260 [ 420.284949][ C1] __x64_sys_clock_settime+0x197/0x260 [ 420.284954][ C1] ? exit_itimers+0x2d0/0x2d0 [ 420.284959][ C1] ? lock_is_held_type+0xb0/0xe0 [ 420.284963][ C1] ? do_syscall_64+0x1c/0xe0 [ 420.284969][ C1] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 420.284973][ C1] do_syscall_64+0x60/0xe0 [ 420.284979][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 420.284983][ C1] RIP: 0033:0x448e99 [ 420.284987][ C1] Code: Bad RIP value. [ 420.284992][ C1] RSP: 002b:00007f43ad2fbda8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e3 [ 420.285004][ C1] RAX: ffffffffffffffda RBX: 00000000006dec48 RCX: 0000000000448e99 [ 420.285011][ C1] RDX: 0000000000448e99 RSI: 0000000020000400 RDI: 0000000000000000 [ 420.285017][ C1] RBP: 00000000006dec40 R08: 0000000000000000 R09: 0000000000000000 [ 420.285024][ C1] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dec4c [ 420.285031][ C1] R13: 0000000000000000 R14: 000000306d616574 R15: 00000000006dec4c