vivid-001: disconnect device geneve2 entered promiscuous mode vivid-001: reconnect INFO: rcu_preempt detected stalls on CPUs/tasks: 0-...: (1 GPs behind) idle=626/140000000000002/0 softirq=25776/25779 fqs=0 1-...: (1 ticks this GP) idle=1a6/140000000000000/0 softirq=27243/27244 fqs=0 (detected by 0, t=1 jiffies, g=6244, c=6243, q=498) NMI backtrace for cpu 0 CPU: 0 PID: 13500 Comm: syz-executor.2 Not tainted 4.14.181-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x283 lib/dump_stack.c:58 nmi_cpu_backtrace.cold+0x57/0x93 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x13a/0x17f lib/nmi_backtrace.c:62 trigger_single_cpu_backtrace include/linux/nmi.h:158 [inline] rcu_dump_cpu_stacks+0x16d/0x1b8 kernel/rcu/tree.c:1396 print_other_cpu_stall kernel/rcu/tree.c:1485 [inline] check_cpu_stall kernel/rcu/tree.c:1616 [inline] __rcu_pending kernel/rcu/tree.c:3390 [inline] rcu_pending kernel/rcu/tree.c:3452 [inline] rcu_check_callbacks.cold+0x7bf/0xdaa kernel/rcu/tree.c:2792 update_process_times+0x29/0x60 kernel/time/timer.c:1590 tick_sched_handle.isra.0+0x73/0x150 kernel/time/tick-sched.c:165 tick_sched_timer+0x41/0x120 kernel/time/tick-sched.c:1223 __run_hrtimer kernel/time/hrtimer.c:1223 [inline] __hrtimer_run_queues+0x24b/0xb90 kernel/time/hrtimer.c:1287 hrtimer_interrupt+0x1e6/0x5e0 kernel/time/hrtimer.c:1321 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1075 [inline] smp_apic_timer_interrupt+0x117/0x5f0 arch/x86/kernel/apic/apic.c:1100 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793 RIP: 0010:orc_find arch/x86/kernel/unwind_orc.c:108 [inline] RIP: 0010:unwind_next_frame+0x528/0x1700 arch/x86/kernel/unwind_orc.c:345 RSP: 0018:ffff8880aec06a98 EFLAGS: 00000a02 ORIG_RAX: ffffffffffffff10 RAX: 00000000000083d5 RBX: 1ffff11015d80d5a RCX: ffffffff8183d52e RDX: dffffc0000000000 RSI: 00000000000083d5 RDI: ffffffff89376398 RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000001 R10: ffff8880aec06bd0 R11: 0000000000056071 R12: ffff8880aec06b7d R13: ffff8880aec06b80 R14: ffff8880aec06b98 R15: ffff8880aec06b48 __save_stack_trace+0x6b/0xd0 arch/x86/kernel/stacktrace.c:44 save_stack mm/kasan/kasan.c:447 [inline] set_track mm/kasan/kasan.c:459 [inline] kasan_kmalloc.part.0+0x4f/0xd0 mm/kasan/kasan.c:551 slab_post_alloc_hook mm/slab.h:442 [inline] slab_alloc mm/slab.c:3390 [inline] kmem_cache_alloc+0x111/0x3c0 mm/slab.c:3550 skb_clone+0x126/0x320 net/core/skbuff.c:1282 dev_queue_xmit_nit+0x2ee/0x950 net/core/dev.c:1943 xmit_one net/core/dev.c:3005 [inline] dev_hard_start_xmit+0xa8/0x880 net/core/dev.c:3025 sch_direct_xmit+0x256/0x4f0 net/sched/sch_generic.c:186 __dev_xmit_skb net/core/dev.c:3218 [inline] __dev_queue_xmit+0x1b8d/0x25a0 net/core/dev.c:3493 neigh_hh_output include/net/neighbour.h:490 [inline] neigh_output include/net/neighbour.h:498 [inline] ip_finish_output2+0xac5/0x1430 net/ipv4/ip_output.c:229 ip_finish_output+0x471/0xc20 net/ipv4/ip_output.c:317 NF_HOOK_COND include/linux/netfilter.h:239 [inline] ip_output+0x1cd/0x510 net/ipv4/ip_output.c:405 dst_output include/net/dst.h:462 [inline] ip_local_out+0x93/0x170 net/ipv4/ip_output.c:124 ip_queue_xmit+0x7ca/0x1a70 net/ipv4/ip_output.c:504 __tcp_transmit_skb+0x1831/0x2dc0 net/ipv4/tcp_output.c:1131 __tcp_send_ack.part.0+0x399/0x580 net/ipv4/tcp_output.c:3640 __tcp_send_ack net/ipv4/tcp_output.c:3646 [inline] tcp_send_ack net/ipv4/tcp_output.c:3646 [inline] tcp_send_delayed_ack+0x2db/0x3a0 net/ipv4/tcp_output.c:3594 __tcp_ack_snd_check+0x245/0x380 net/ipv4/tcp_input.c:5148 tcp_rcv_established+0x1092/0x15e0 net/ipv4/tcp_input.c:5535 tcp_v4_do_rcv+0x56c/0x800 net/ipv4/tcp_ipv4.c:1467 tcp_v4_rcv+0x2821/0x36a0 net/ipv4/tcp_ipv4.c:1741 ip_local_deliver_finish+0x3f2/0xab0 net/ipv4/ip_input.c:216 NF_HOOK include/linux/netfilter.h:250 [inline] ip_local_deliver+0x167/0x460 net/ipv4/ip_input.c:257 dst_input include/net/dst.h:468 [inline] ip_rcv_finish+0x6e1/0x1a00 net/ipv4/ip_input.c:396 NF_HOOK include/linux/netfilter.h:250 [inline] ip_rcv+0x8d3/0xf3f net/ipv4/ip_input.c:493 __netif_receive_skb_core+0x1e8e/0x2c10 net/core/dev.c:4478 __netif_receive_skb+0x27/0x1a0 net/core/dev.c:4516 netif_receive_skb_internal+0xd7/0x580 net/core/dev.c:4589 napi_skb_finish net/core/dev.c:4950 [inline] napi_gro_receive+0x2e2/0x400 net/core/dev.c:4981 receive_buf+0x5fb/0x4610 drivers/net/virtio_net.c:852 virtnet_receive drivers/net/virtio_net.c:1098 [inline] virtnet_poll+0x4d3/0x9c0 drivers/net/virtio_net.c:1189 napi_poll net/core/dev.c:5599 [inline] net_rx_action+0x456/0xe80 net/core/dev.c:5665 __do_softirq+0x254/0x9bf kernel/softirq.c:288 invoke_softirq kernel/softirq.c:368 [inline] irq_exit+0x15b/0x1a0 kernel/softirq.c:409 exiting_irq arch/x86/include/asm/apic.h:648 [inline] do_IRQ+0x112/0x1d0 arch/x86/kernel/irq.c:242 common_interrupt+0x93/0x93 arch/x86/entry/entry_64.S:576 RIP: 0010:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:169 [inline] RIP: 0010:_raw_spin_unlock_irq+0x50/0x90 kernel/locking/spinlock.c:200 RSP: 0018:ffff888088217738 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff6e RAX: 1ffffffff0f62cab RBX: 0000000000000002 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 0000000000000001 RDI: ffff88806c204a44 RBP: ffff8880aec2b580 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88806c2041c0 R13: ffff8880aec2b580 R14: ffff8880882177b0 R15: ffff88806c2041c0 rq_unlock_irq kernel/sched/sched.h:1772 [inline] __schedule+0x146a/0x1d70 kernel/sched/core.c:3387 preempt_schedule_common+0x4a/0xc0 kernel/sched/core.c:3508 ___preempt_schedule+0x16/0x18 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline] _raw_spin_unlock_irqrestore+0xaf/0xe0 kernel/locking/spinlock.c:192 __debug_check_no_obj_freed lib/debugobjects.c:760 [inline] debug_check_no_obj_freed+0x27c/0x5fd lib/debugobjects.c:776 free_pages_prepare mm/page_alloc.c:1063 [inline] free_pcp_prepare mm/page_alloc.c:1077 [inline] free_hot_cold_page+0x224/0xc90 mm/page_alloc.c:2609 __vunmap+0x1b3/0x330 mm/vmalloc.c:1545 vfree+0x4b/0xd0 mm/vmalloc.c:1612 kcov_put kernel/kcov.c:104 [inline] kcov_put+0x13/0x20 kernel/kcov.c:101 kcov_close+0xc/0x10 kernel/kcov.c:188 __fput+0x25f/0x7a0 fs/file_table.c:210 task_work_run+0x113/0x190 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x9fb/0x2ae0 kernel/exit.c:858 do_group_exit+0x100/0x2e0 kernel/exit.c:955 get_signal+0x385/0x1c90 kernel/signal.c:2423 do_signal+0x7c/0x15d0 arch/x86/kernel/signal.c:814 exit_to_usermode_loop+0x160/0x200 arch/x86/entry/common.c:160 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x45ca29 RSP: 002b:00007fe0f0e78c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffea RBX: 00000000004da8c0 RCX: 000000000045ca29 RDX: 0000000000000048 RSI: 00000000200054c0 RDI: 0000000000000005 RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 000000000000006a R14: 00000000004c32b4 R15: 00007fe0f0e796d4 vivid-001: disconnect vivid-007: disconnect device geneve2 entered promiscuous mode device geneve2 entered promiscuous mode vivid-007: reconnect vivid-001: reconnect vivid-001: disconnect vivid-007: disconnect device geneve2 entered promiscuous mode device geneve2 entered promiscuous mode device geneve2 entered promiscuous mode bridge3: port 1(vlan0) entered disabled state batman_adv: batadv0: Interface deactivated: batadv_slave_0 vivid-001: reconnect vivid-007: reconnect batman_adv: batadv0: Removing interface: batadv_slave_0 batman_adv: batadv0: Interface deactivated: batadv_slave_1 batman_adv: batadv0: Removing interface: batadv_slave_1 device bridge_slave_1 left promiscuous mode bridge0: port 2(bridge_slave_1) entered disabled state device bridge_slave_0 left promiscuous mode bridge0: port 1(bridge_slave_0) entered disabled state device veth1_macvtap left promiscuous mode device veth0_macvtap left promiscuous mode device veth1_vlan left promiscuous mode device veth0_vlan left promiscuous mode device hsr_slave_1 left promiscuous mode device hsr_slave_0 left promiscuous mode team0 (unregistering): Port device team_slave_1 removed team0 (unregistering): Port device team_slave_0 removed bond0 (unregistering): Releasing backup interface bond_slave_1 bond0 (unregistering): Releasing backup interface bond_slave_0 bond0 (unregistering): Released all slaves syz-executor.0 (13626) used greatest stack depth: 24896 bytes left vivid-001: disconnect vivid-007: disconnect device geneve2 entered promiscuous mode device geneve2 entered promiscuous mode device geneve2 entered promiscuous mode vivid-007: reconnect vivid-001: reconnect IPVS: ftp: loaded support on port[0] = 21 IPVS: ftp: loaded support on port[0] = 21 chnl_net:caif_netlink_parms(): no params data found chnl_net:caif_netlink_parms(): no params data found bridge0: port 1(bridge_slave_0) entered blocking state bridge0: port 1(bridge_slave_0) entered disabled state device bridge_slave_0 entered promiscuous mode bridge0: port 2(bridge_slave_1) entered blocking state bridge0: port 2(bridge_slave_1) entered disabled state device bridge_slave_1 entered promiscuous mode bond0: Enslaving bond_slave_0 as an active interface with an up link bond0: Enslaving bond_slave_1 as an active interface with an up link bridge0: port 1(bridge_slave_0) entered blocking state bridge0: port 1(bridge_slave_0) entered disabled state device bridge_slave_0 entered promiscuous mode bridge0: port 2(bridge_slave_1) entered blocking state bridge0: port 2(bridge_slave_1) entered disabled state device bridge_slave_1 entered promiscuous mode IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready team0: Port device team_slave_0 added IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready team0: Port device team_slave_1 added bond0: Enslaving bond_slave_0 as an active interface with an up link batman_adv: batadv0: Adding interface: batadv_slave_0 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. batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active bond0: Enslaving bond_slave_1 as an active interface with an up link batman_adv: batadv0: Adding interface: batadv_slave_1 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. batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready team0: Port device team_slave_0 added IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready team0: Port device team_slave_1 added IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready batman_adv: batadv0: Adding interface: batadv_slave_0 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. batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active device hsr_slave_0 entered promiscuous mode device hsr_slave_1 entered promiscuous mode batman_adv: batadv0: Adding interface: batadv_slave_1 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. batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready device hsr_slave_0 entered promiscuous mode device hsr_slave_1 entered promiscuous mode batman_adv: batadv0: Interface deactivated: batadv_slave_0 batman_adv: batadv0: Removing interface: batadv_slave_0 batman_adv: batadv0: Interface deactivated: batadv_slave_1 batman_adv: batadv0: Removing interface: batadv_slave_1 device bridge_slave_1 left promiscuous mode bridge0: port 2(bridge_slave_1) entered disabled state device bridge_slave_0 left promiscuous mode bridge0: port 1(bridge_slave_0) entered disabled state device veth1_macvtap left promiscuous mode device veth0_macvtap left promiscuous mode device veth1_vlan left promiscuous mode device veth0_vlan left promiscuous mode device hsr_slave_1 left promiscuous mode device hsr_slave_0 left promiscuous mode @þ (unregistering): Port device team_slave_1 removed @þ (unregistering): Port device team_slave_0 removed bond0 (unregistering): Releasing backup interface bond_slave_1 bond0 (unregistering): Releasing backup interface bond_slave_0 bond0 (unregistering): Released all slaves IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready 8021q: adding VLAN 0 to HW filter on device bond0 IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready 8021q: adding VLAN 0 to HW filter on device team0 IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready bridge0: port 1(bridge_slave_0) entered blocking state bridge0: port 1(bridge_slave_0) entered forwarding state IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready 8021q: adding VLAN 0 to HW filter on device bond0 IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready bridge0: port 2(bridge_slave_1) entered blocking state bridge0: port 2(bridge_slave_1) entered forwarding state IPv6: ADDRCONF(NETDEV_UP): veth0_to_bond: link is not ready IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready IPv6: ADDRCONF(NETDEV_UP): veth1_to_bond: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready 8021q: adding VLAN 0 to HW filter on device team0 IPv6: ADDRCONF(NETDEV_UP): veth0_to_team: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready IPv6: ADDRCONF(NETDEV_UP): veth1_to_team: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready bridge0: port 1(bridge_slave_0) entered blocking state bridge0: port 1(bridge_slave_0) entered forwarding state IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready IPv6: ADDRCONF(NETDEV_UP): veth0_to_hsr: link is not ready IPv6: ADDRCONF(NETDEV_UP): veth1_to_hsr: link is not ready IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready