[ 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... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.118' (ECDSA) to the list of known hosts. syzkaller login: [ 702.582482][ T6826] IPVS: ftp: loaded support on port[0] = 21 [ 702.652438][ T6826] chnl_net:caif_netlink_parms(): no params data found [ 702.694435][ T6826] bridge0: port 1(bridge_slave_0) entered blocking state [ 702.702554][ T6826] bridge0: port 1(bridge_slave_0) entered disabled state [ 702.711016][ T6826] device bridge_slave_0 entered promiscuous mode [ 702.719575][ T6826] bridge0: port 2(bridge_slave_1) entered blocking state [ 702.726980][ T6826] bridge0: port 2(bridge_slave_1) entered disabled state [ 702.734648][ T6826] device bridge_slave_1 entered promiscuous mode [ 702.752095][ T6826] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 702.762736][ T6826] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 702.782406][ T6826] team0: Port device team_slave_0 added [ 702.789518][ T6826] team0: Port device team_slave_1 added [ 702.805734][ T6826] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 702.812840][ T6826] 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. [ 702.838833][ T6826] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 702.850967][ T6826] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 702.858031][ T6826] 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. [ 702.884608][ T6826] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 702.968242][ T6826] device hsr_slave_0 entered promiscuous mode [ 703.026255][ T6826] device hsr_slave_1 entered promiscuous mode [ 703.168326][ T6826] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 703.209005][ T6826] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 703.268793][ T6826] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 703.317701][ T6826] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 703.369642][ T6826] bridge0: port 2(bridge_slave_1) entered blocking state [ 703.377009][ T6826] bridge0: port 2(bridge_slave_1) entered forwarding state [ 703.384828][ T6826] bridge0: port 1(bridge_slave_0) entered blocking state [ 703.391952][ T6826] bridge0: port 1(bridge_slave_0) entered forwarding state [ 703.428560][ T6826] 8021q: adding VLAN 0 to HW filter on device bond0 [ 703.443365][ T2790] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 703.453208][ T2790] bridge0: port 1(bridge_slave_0) entered disabled state [ 703.462107][ T2790] bridge0: port 2(bridge_slave_1) entered disabled state [ 703.471091][ T2790] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 703.483059][ T6826] 8021q: adding VLAN 0 to HW filter on device team0 [ 703.495024][ T3872] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 703.503768][ T3872] bridge0: port 1(bridge_slave_0) entered blocking state [ 703.510920][ T3872] bridge0: port 1(bridge_slave_0) entered forwarding state [ 703.528144][ T7036] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 703.537423][ T7036] bridge0: port 2(bridge_slave_1) entered blocking state [ 703.547002][ T7036] bridge0: port 2(bridge_slave_1) entered forwarding state [ 703.565480][ T6826] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 703.576507][ T6826] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 703.589506][ T6888] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 703.599116][ T6888] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 703.608801][ T6888] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 703.619595][ T6888] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 703.628314][ T6888] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 703.636112][ T6888] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 703.652979][ T3872] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 703.660994][ T3872] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 703.673428][ T6826] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 703.690387][ T6888] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 703.700091][ T6888] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 703.719687][ T6826] device veth0_vlan entered promiscuous mode [ 703.727678][ T2790] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 703.737928][ T2790] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 703.750087][ T6826] device veth1_vlan entered promiscuous mode [ 703.763368][ T6888] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 703.771554][ T6888] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 703.780040][ T6888] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 703.788487][ T6888] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 703.804521][ T3872] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 703.814456][ T3872] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 703.825551][ T6826] device veth0_macvtap entered promiscuous mode [ 703.835600][ T6826] device veth1_macvtap entered promiscuous mode [ 703.850745][ T6826] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 703.858630][ T6888] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 703.866816][ T6888] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 703.875127][ T6888] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 703.884092][ T6888] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 703.896405][ T6826] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 703.903827][ T3872] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 703.913645][ T3872] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 713.017814][ T0] NOHZ: local_softirq_pending 08 [ 774.459396][ T0] NOHZ: local_softirq_pending 08 [ 794.932148][ T0] NOHZ: local_softirq_pending 08 [ 809.100032][ C1] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 809.107137][ C1] rcu: 0-...0: (1 GPs behind) idle=59a/1/0x4000000000000000 softirq=8266/8267 fqs=5250 [ 809.117093][ C1] (detected by 1, t=10502 jiffies, g=6117, q=61) [ 809.123600][ C1] Sending NMI from CPU 1 to CPUs 0: [ 809.130926][ C1] NMI backtrace for cpu 0 [ 809.130931][ C1] CPU: 0 PID: 6826 Comm: syz-executor019 Not tainted 5.8.0-rc3-syzkaller #0 [ 809.130935][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 809.130939][ C1] RIP: 0010:preempt_count_add+0xe/0x150 [ 809.130947][ C1] Code: 07 80 c1 03 38 c1 0f 8c 40 ff ff ff 48 89 ef e8 48 f2 62 00 e9 33 ff ff ff 0f 1f 00 41 57 41 56 53 89 fb 65 01 3d 4e 75 b1 7e <48> c7 c0 30 7d 5a 8b 48 c1 e8 03 49 bf 00 00 00 00 00 fc ff df 42 [ 809.130950][ C1] RSP: 0018:ffffc90000007cf0 EFLAGS: 00000006 [ 809.130956][ C1] RAX: 1ffff11012ddc459 RBX: 0000000000000001 RCX: ffff8880a8c44300 [ 809.130960][ C1] RDX: 0000000000010202 RSI: 0000000000000000 RDI: 0000000000000001 [ 809.130964][ C1] RBP: ffff888096ee2000 R08: ffffffff8164ef7e R09: fffffbfff12da576 [ 809.130968][ C1] R10: fffffbfff12da576 R11: 0000000000000000 R12: ffff888096ee2340 [ 809.130971][ C1] R13: dffffc0000000000 R14: ffff888096ee22e8 R15: ffff888096ee2340 [ 809.130975][ C1] FS: 0000000000753880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 809.130979][ C1] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 809.130983][ C1] CR2: 0000000020000610 CR3: 00000000a9a34000 CR4: 00000000001406f0 [ 809.130987][ C1] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 809.130990][ C1] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 809.130993][ C1] Call Trace: [ 809.130995][ C1] [ 809.130997][ C1] _raw_spin_lock+0xe/0x40 [ 809.131000][ C1] advance_sched+0x47/0x8c0 [ 809.131003][ C1] ? lock_is_held_type+0x87/0xe0 [ 809.131006][ C1] ? rcu_read_lock_sched_held+0x2f/0xa0 [ 809.131009][ C1] ? taprio_free_sched_cb+0x1d0/0x1d0 [ 809.131012][ C1] __hrtimer_run_queues+0x47f/0x930 [ 809.131014][ C1] hrtimer_interrupt+0x373/0xd60 [ 809.131017][ C1] __sysvec_apic_timer_interrupt+0xf0/0x260 [ 809.131020][ C1] asm_call_on_stack+0xf/0x20 [ 809.131022][ C1] [ 809.131025][ C1] sysvec_apic_timer_interrupt+0xb9/0x130 [ 809.131028][ C1] asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 809.131032][ C1] RIP: 0010:_raw_spin_unlock_irqrestore+0xa5/0xd0 [ 809.131040][ C1] Code: b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 0c 48 c7 c7 f0 c7 2b 89 e8 ea 7c 94 f9 48 83 3d d2 c9 0c 01 00 74 2c 4c 89 f7 57 9d <0f> 1f 44 00 00 bf 01 00 00 00 e8 cc 8b 31 f9 65 8b 05 d1 ff e2 77 [ 809.131043][ C1] RSP: 0018:ffffc90001277408 EFLAGS: 00000282 [ 809.131048][ C1] RAX: 1ffffffff12578fe RBX: ffff888096ee22e8 RCX: dffffc0000000000 [ 809.131052][ C1] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000282 [ 809.131056][ C1] RBP: ffffc90001277600 R08: dffffc0000000000 R09: fffffbfff16334b8 [ 809.131060][ C1] R10: fffffbfff16334b8 R11: 0000000000000000 R12: ffff888096ee2340 [ 809.131064][ C1] R13: 0000000000000000 R14: 0000000000000282 R15: 161f1f2ad520785b [ 809.131066][ C1] taprio_change+0x4245/0x51f0 [ 809.131069][ C1] ? taprio_peek+0x40/0x40 [ 809.131072][ C1] qdisc_create+0x7d1/0x1410 [ 809.131074][ C1] ? __nla_parse+0x3c/0x50 [ 809.131077][ C1] tc_modify_qdisc+0x962/0x1d90 [ 809.131080][ C1] ? rcu_lock_release+0x20/0x20 [ 809.131082][ C1] rtnetlink_rcv_msg+0x889/0xd40 [ 809.131085][ C1] ? trace_lock_release+0x137/0x1a0 [ 809.131088][ C1] ? __local_bh_enable_ip+0x133/0x230 [ 809.131091][ C1] ? local_bh_enable+0x5/0x20 [ 809.131094][ C1] ? lockdep_hardirqs_on+0x38/0xe0 [ 809.131096][ C1] ? local_bh_enable+0x5/0x20 [ 809.131099][ C1] ? __local_bh_enable_ip+0x133/0x230 [ 809.131102][ C1] ? __dev_queue_xmit+0x1846/0x2940 [ 809.131105][ C1] netlink_rcv_skb+0x190/0x3a0 [ 809.131108][ C1] ? rtnetlink_bind+0x80/0x80 [ 809.131110][ C1] netlink_unicast+0x786/0x940 [ 809.131113][ C1] netlink_sendmsg+0xa57/0xd70 [ 809.131116][ C1] ? netlink_getsockopt+0x9e0/0x9e0 [ 809.131118][ C1] ____sys_sendmsg+0x519/0x800 [ 809.131121][ C1] ? import_iovec+0x12a/0x2c0 [ 809.131124][ C1] __sys_sendmsg+0x2b1/0x360 [ 809.131127][ C1] ? trace_lock_release+0x137/0x1a0 [ 809.131129][ C1] ? rcu_lock_release+0x9/0x20 [ 809.131132][ C1] ? __fd_install+0x251/0x490 [ 809.131135][ C1] ? lock_is_held_type+0x87/0xe0 [ 809.131138][ C1] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 809.131141][ C1] do_syscall_64+0x73/0xe0 [ 809.131144][ C1] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 809.131146][ C1] RIP: 0033:0x443799 [ 809.131148][ C1] Code: Bad RIP value. [ 809.131151][ C1] RSP: 002b:00007ffe68f74b78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 809.131163][ C1] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443799 [ 809.131167][ C1] RDX: 0000000000000000 RSI: 00000000200007c0 RDI: 0000000000000004 [ 809.131171][ C1] RBP: 00007ffe68f74b80 R08: 0000000001bbbbbb R09: 0000000001bbbbbb [ 809.131175][ C1] R10: 0000000001bbbbbb R11: 0000000000000246 R12: 00007ffe68f74b90 [ 809.131179][ C1] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 809.131183][ C1] INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 0.000 msecs [ 815.411010][ T0] NOHZ: local_softirq_pending 08