[ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.46' (ECDSA) to the list of known hosts. syzkaller login: [ 703.783569][ T6861] IPVS: ftp: loaded support on port[0] = 21 [ 703.870779][ T6861] chnl_net:caif_netlink_parms(): no params data found [ 703.922320][ T6861] bridge0: port 1(bridge_slave_0) entered blocking state [ 703.930890][ T6861] bridge0: port 1(bridge_slave_0) entered disabled state [ 703.939564][ T6861] device bridge_slave_0 entered promiscuous mode [ 703.948790][ T6861] bridge0: port 2(bridge_slave_1) entered blocking state [ 703.956783][ T6861] bridge0: port 2(bridge_slave_1) entered disabled state [ 703.965298][ T6861] device bridge_slave_1 entered promiscuous mode [ 703.986022][ T6861] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 703.996971][ T6861] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 704.019477][ T6861] team0: Port device team_slave_0 added [ 704.026854][ T6861] team0: Port device team_slave_1 added [ 704.045176][ T6861] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 704.052140][ T6861] 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. [ 704.078854][ T6861] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 704.091485][ T6861] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 704.098931][ T6861] 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. [ 704.125909][ T6861] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 704.152565][ T6861] device hsr_slave_0 entered promiscuous mode [ 704.159309][ T6861] device hsr_slave_1 entered promiscuous mode [ 704.254452][ T6861] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 704.264549][ T6861] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 704.276151][ T6861] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 704.285884][ T6861] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 704.308991][ T6861] bridge0: port 2(bridge_slave_1) entered blocking state [ 704.316161][ T6861] bridge0: port 2(bridge_slave_1) entered forwarding state [ 704.323950][ T6861] bridge0: port 1(bridge_slave_0) entered blocking state [ 704.331040][ T6861] bridge0: port 1(bridge_slave_0) entered forwarding state [ 704.376080][ T6861] 8021q: adding VLAN 0 to HW filter on device bond0 [ 704.390168][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 704.401931][ T17] bridge0: port 1(bridge_slave_0) entered disabled state [ 704.410753][ T17] bridge0: port 2(bridge_slave_1) entered disabled state [ 704.418990][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 704.431355][ T6861] 8021q: adding VLAN 0 to HW filter on device team0 [ 704.443394][ T7069] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 704.453093][ T7069] bridge0: port 1(bridge_slave_0) entered blocking state [ 704.460322][ T7069] bridge0: port 1(bridge_slave_0) entered forwarding state [ 704.476194][ T6853] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 704.485072][ T6853] bridge0: port 2(bridge_slave_1) entered blocking state [ 704.492146][ T6853] bridge0: port 2(bridge_slave_1) entered forwarding state [ 704.515155][ T6853] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 704.524461][ T6853] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 704.532795][ T6853] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 704.546172][ T6861] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 704.558853][ T6861] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 704.568451][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 704.576477][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 704.595387][ T7069] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 704.602789][ T7069] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 704.616357][ T6861] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 704.637375][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 704.657638][ T7069] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 704.666869][ T7069] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 704.675647][ T7069] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 704.686957][ T6861] device veth0_vlan entered promiscuous mode [ 704.699080][ T6861] device veth1_vlan entered promiscuous mode [ 704.720122][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 704.728885][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 704.737802][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 704.748889][ T6861] device veth0_macvtap entered promiscuous mode [ 704.759526][ T6861] device veth1_macvtap entered promiscuous mode [ 704.777500][ T6861] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 704.786430][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 704.796346][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 704.809642][ T6861] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 704.817172][ T7069] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 704.829098][ T6861] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 executing program [ 704.839125][ T6861] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 704.848211][ T6861] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 704.857012][ T6861] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 809.903343][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 809.910580][ C1] rcu: 0-...0: (0 ticks this GP) idle=8f2/1/0x4000000000000000 softirq=8267/8268 fqs=5250 [ 809.920947][ C1] (detected by 1, t=10502 jiffies, g=8905, q=3585) [ 809.927563][ C1] Sending NMI from CPU 1 to CPUs 0: [ 809.934947][ C1] NMI backtrace for cpu 0 [ 809.934961][ C1] CPU: 0 PID: 6861 Comm: syz-executor955 Not tainted 5.8.0-next-20200812-syzkaller #0 [ 809.934969][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 809.934974][ C1] RIP: 0010:advance_sched+0x402/0x990 [ 809.934999][ C1] Code: 38 d0 7c 08 84 d2 0f 85 2b 05 00 00 41 8b 44 24 2c 4d 8d 74 24 20 31 d2 be 04 00 00 00 4c 89 f7 48 69 c0 e8 03 00 00 48 f7 f5 <48> 89 c5 e8 a6 8e 47 fb 4c 89 f2 48 b8 00 00 00 00 00 fc ff df 48 [ 809.935004][ C1] RSP: 0018:ffffc90000007d78 EFLAGS: 00000006 [ 809.935014][ C1] RAX: 0000000140000002 RBX: ffff8880a8ed6340 RCX: ffff8880a65c282c [ 809.935020][ C1] RDX: 00000000000000c8 RSI: 0000000000000004 RDI: ffff8880a65c2820 [ 809.935027][ C1] RBP: 0000000000000190 R08: 0000000000000000 R09: ffff8880a8ed62e7 [ 809.935033][ C1] R10: ffffed10151dac5c R11: 0000000000000000 R12: ffff8880a65c2800 [ 809.935039][ C1] R13: 17755e622eeabcc4 R14: ffff8880a65c2820 R15: 17755e622eeabcc4 [ 809.935046][ C1] FS: 0000000000b01880(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 809.935052][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 809.935058][ C1] CR2: 00000000006d50a0 CR3: 00000000a801e000 CR4: 00000000001506f0 [ 809.935064][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 809.935070][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 809.935074][ C1] Call Trace: [ 809.935077][ C1] [ 809.935082][ C1] __hrtimer_run_queues+0x6a9/0xfc0 [ 809.935087][ C1] ? taprio_dequeue_soft+0xa40/0xa40 [ 809.935091][ C1] ? lockdep_hardirqs_off+0x70/0xc0 [ 809.935097][ C1] ? hrtimer_sleeper_start_expires+0x80/0x80 [ 809.935102][ C1] ? ktime_get_update_offsets_now+0x1c4/0x250 [ 809.935106][ C1] hrtimer_interrupt+0x32a/0x930 [ 809.935111][ C1] __sysvec_apic_timer_interrupt+0x142/0x5e0 [ 809.935116][ C1] asm_call_on_stack+0xf/0x20 [ 809.935119][ C1] [ 809.935124][ C1] sysvec_apic_timer_interrupt+0xb2/0xf0 [ 809.935129][ C1] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 809.935134][ C1] RIP: 0010:on_each_cpu+0x149/0x240 [ 809.935146][ C1] Code: 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 e6 00 00 00 48 83 3d ef b7 4c 08 00 0f 84 af 00 00 00 e8 9c f3 0a 00 48 89 df 57 9d <0f> 1f 44 00 00 e8 8d f3 0a 00 bf 01 00 00 00 e8 f3 35 e6 ff 31 ff [ 809.935151][ C1] RSP: 0018:ffffc900015b7b70 EFLAGS: 00000293 [ 809.935160][ C1] RAX: 0000000000000000 RBX: 0000000000000293 RCX: 1ffffffff1575fd9 [ 809.935166][ C1] RDX: ffff8880a1078100 RSI: ffffffff81697d24 RDI: 0000000000000293 [ 809.935173][ C1] RBP: 0000000000000200 R08: 0000000000000001 R09: 0000000000000001 [ 809.935179][ C1] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 809.935185][ C1] R13: 0009dadc546d6acc R14: 003b9aca00000000 R15: 0000000000000000 [ 809.935189][ C1] ? on_each_cpu+0x144/0x240 [ 809.935194][ C1] clock_was_set+0x18/0x20 [ 809.935199][ C1] timekeeping_inject_offset+0x436/0x570 [ 809.935203][ C1] ? do_settimeofday64+0x570/0x570 [ 809.935208][ C1] ? bpf_lsm_capable+0x5/0x10 [ 809.935213][ C1] ? security_capable+0x8f/0xc0 [ 809.935217][ C1] do_adjtimex+0x28f/0xa30 [ 809.935222][ C1] ? ktime_get_update_offsets_now+0x250/0x250 [ 809.935226][ C1] ? __might_fault+0x190/0x1d0 [ 809.935231][ C1] ? posix_get_monotonic_ktime+0x10/0x10 [ 809.935236][ C1] __do_sys_clock_adjtime+0x155/0x250 [ 809.935241][ C1] ? do_timer_create+0x14f0/0x14f0 [ 809.935245][ C1] ? __fget_light+0x155/0x280 [ 809.935250][ C1] ? syscall_enter_from_user_mode+0x20/0x290 [ 809.935256][ C1] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 809.935260][ C1] ? trace_hardirqs_on+0x5f/0x220 [ 809.935265][ C1] ? lockdep_hardirqs_on+0x76/0xf0 [ 809.935269][ C1] do_syscall_64+0x2d/0x70 [ 809.935274][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 809.935279][ C1] RIP: 0033:0x443709 [ 809.935291][ C1] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 0f fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 809.935295][ C1] RSP: 002b:00007ffe40169038 EFLAGS: 00000246 ORIG_RAX: 0000000000000131 [ 809.935306][ C1] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443709 [ 809.935313][ C1] RDX: 0000000000443709 RSI: 0000000020000300 RDI: 0000000000000000 [ 809.935319][ C1] RBP: 00007ffe40169050 R08: 0000000000000000 R09: 0000000000000000 [ 809.935325][ C1] R10: 0000000000010000 R11: 0000000000000246 R12: 00007ffe40169060 [ 809.935331][ C1] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 809.935338][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 0.000 msecs