Warning: Permanently added '10.128.0.254' (ECDSA) to the list of known hosts. syzkaller login: [ 306.058094][ T6832] IPVS: ftp: loaded support on port[0] = 21 [ 306.151477][ T6832] chnl_net:caif_netlink_parms(): no params data found [ 306.202862][ T6832] bridge0: port 1(bridge_slave_0) entered blocking state [ 306.210527][ T6832] bridge0: port 1(bridge_slave_0) entered disabled state [ 306.219647][ T6832] device bridge_slave_0 entered promiscuous mode [ 306.228917][ T6832] bridge0: port 2(bridge_slave_1) entered blocking state [ 306.236516][ T6832] bridge0: port 2(bridge_slave_1) entered disabled state [ 306.244865][ T6832] device bridge_slave_1 entered promiscuous mode [ 306.265506][ T6832] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 306.276470][ T6832] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 306.299140][ T6832] team0: Port device team_slave_0 added [ 306.307025][ T6832] team0: Port device team_slave_1 added [ 306.324939][ T6832] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 306.332242][ T6832] 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. [ 306.359514][ T6832] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 306.372198][ T6832] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 306.379739][ T6832] 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. [ 306.406267][ T6832] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 306.434121][ T6832] device hsr_slave_0 entered promiscuous mode [ 306.440958][ T6832] device hsr_slave_1 entered promiscuous mode [ 306.539800][ T6832] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 306.550231][ T6832] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 306.561162][ T6832] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 306.571689][ T6832] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 306.596084][ T6832] bridge0: port 2(bridge_slave_1) entered blocking state [ 306.603219][ T6832] bridge0: port 2(bridge_slave_1) entered forwarding state [ 306.611095][ T6832] bridge0: port 1(bridge_slave_0) entered blocking state [ 306.618228][ T6832] bridge0: port 1(bridge_slave_0) entered forwarding state [ 306.663130][ T6832] 8021q: adding VLAN 0 to HW filter on device bond0 [ 306.677759][ T3100] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 306.689119][ T3100] bridge0: port 1(bridge_slave_0) entered disabled state [ 306.697748][ T3100] bridge0: port 2(bridge_slave_1) entered disabled state [ 306.706193][ T3100] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 306.718689][ T6832] 8021q: adding VLAN 0 to HW filter on device team0 [ 306.729982][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 306.740353][ T17] bridge0: port 1(bridge_slave_0) entered blocking state [ 306.747555][ T17] bridge0: port 1(bridge_slave_0) entered forwarding state [ 306.765962][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 306.774832][ T17] bridge0: port 2(bridge_slave_1) entered blocking state [ 306.781870][ T17] bridge0: port 2(bridge_slave_1) entered forwarding state [ 306.805071][ T3100] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 306.813541][ T3100] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 306.822818][ T3100] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 306.831670][ T3100] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 306.841645][ T6832] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 306.850418][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 306.869685][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 306.877565][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 306.892015][ T6832] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 306.911602][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 306.931142][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 306.940029][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 306.949071][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 306.959224][ T6832] device veth0_vlan entered promiscuous mode [ 306.971946][ T6832] device veth1_vlan entered promiscuous mode [ 306.992736][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 307.001830][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 307.010466][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 307.021989][ T6832] device veth0_macvtap entered promiscuous mode [ 307.032451][ T6832] device veth1_macvtap entered promiscuous mode [ 307.050042][ T6832] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 307.058574][ T3100] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 307.068416][ T3100] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 307.080826][ T6832] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 307.088502][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 307.099850][ T6832] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 307.108962][ T6832] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 307.118208][ T6832] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 307.128804][ T6832] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 307.216248][ C1] TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies. Check SNMP counters. [ 419.145511][ T0] NOHZ: local_softirq_pending 08 [ 452.424091][ T1169] INFO: task syz-executor542:6832 blocked for more than 143 seconds. [ 452.433127][ T1169] Not tainted 5.9.0-rc2-syzkaller #0 [ 452.439875][ T1169] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. [ 452.449059][ T1169] task:syz-executor542 state:D stack:23584 pid: 6832 ppid: 6831 flags:0x00000000 [ 452.458796][ T1169] Call Trace: [ 452.462157][ T1169] __schedule+0x8e5/0x21e0 [ 452.467282][ T1169] ? io_schedule_timeout+0x140/0x140 [ 452.472594][ T1169] schedule+0xd0/0x2a0 [ 452.477466][ T1169] schedule_timeout+0x1d8/0x250 [ 452.482315][ T1169] ? usleep_range+0x170/0x170 [ 452.489060][ T1169] ? mark_held_locks+0x9f/0xe0 [ 452.493822][ T1169] ? _raw_spin_unlock_irq+0x1f/0x80 [ 452.499109][ T1169] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 452.505245][ T1169] ? trace_hardirqs_on+0x5f/0x220 [ 452.510278][ T1169] wait_for_completion+0x163/0x260 [ 452.515436][ T1169] ? wait_for_completion_interruptible+0x2e0/0x2e0 [ 452.525860][ T1169] ? _raw_spin_unlock_irq+0x1f/0x80 [ 452.531052][ T1169] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 452.537219][ T1169] __flush_work+0x51f/0xab0 [ 452.541772][ T1169] ? queue_work_node+0x370/0x370 [ 452.546886][ T1169] ? debug_object_init_on_stack+0x20/0x20 [ 452.552610][ T1169] ? flush_workqueue_prep_pwqs+0x4f0/0x4f0 [ 452.558469][ T1169] ? mark_held_locks+0x9f/0xe0 [ 452.563239][ T1169] ? __cancel_work_timer+0x516/0x700 [ 452.568604][ T1169] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 452.574669][ T1169] __cancel_work_timer+0x5de/0x700 [ 452.579777][ T1169] ? try_to_grab_pending.part.0+0x7d0/0x7d0 [ 452.585805][ T1169] ? lock_acquire+0x1f1/0xad0 [ 452.590566][ T1169] ? __sock_release+0x86/0x280 [ 452.595415][ T1169] ? lock_release+0x8e0/0x8e0 [ 452.600191][ T1169] tls_sk_proto_close+0x4a7/0xaf0 [ 452.605308][ T1169] ? wait_on_pending_writer+0x3f0/0x3f0 [ 452.610975][ T1169] ? ip_mc_drop_socket+0x16/0x260 [ 452.616064][ T1169] inet_release+0x12e/0x280 [ 452.620604][ T1169] inet6_release+0x4c/0x70 [ 452.625092][ T1169] __sock_release+0xcd/0x280 [ 452.629701][ T1169] sock_close+0x18/0x20 [ 452.633985][ T1169] __fput+0x285/0x920 [ 452.637967][ T1169] ? __sock_release+0x280/0x280 [ 452.642798][ T1169] task_work_run+0xdd/0x190 [ 452.647410][ T1169] exit_to_user_mode_prepare+0x195/0x1c0 [ 452.653083][ T1169] syscall_exit_to_user_mode+0x59/0x2b0 [ 452.658695][ T1169] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 452.664733][ T1169] RIP: 0033:0x403950 [ 452.668618][ T1169] Code: Bad RIP value. [ 452.672677][ T1169] RSP: 002b:00007ffcb4dcd7f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 [ 452.681145][ T1169] RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000403950 [ 452.689302][ T1169] RDX: 00000000000000d8 RSI: 00000000200005c0 RDI: 0000000000000004 [ 452.697335][ T1169] RBP: 00007ffcb4dcd800 R08: 0000000000000000 R09: 00000000000000d8 [ 452.705394][ T1169] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffcb4dcd810 [ 452.713377][ T1169] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 452.721440][ T1169] [ 452.721440][ T1169] Showing all locks held in the system: [ 452.729282][ T1169] 3 locks held by kworker/0:1/12: [ 452.734352][ T1169] #0: ffff8880aa063d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x82b/0x1670 [ 452.745095][ T1169] #1: ffffc90000d2fda8 ((work_completion)(&(&sw_ctx_tx->tx_work.work)->work)){+.+.}-{0:0}, at: process_one_work+0x85f/0x1670 [ 452.758228][ T1169] #2: ffff888094d794d8 (&ctx->tx_lock){+.+.}-{3:3}, at: tx_work_handler+0x127/0x190 [ 452.767898][ T1169] 1 lock held by khungtaskd/1169: [ 452.772907][ T1169] #0: ffffffff89bd6900 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 [ 452.782812][ T1169] 1 lock held by in:imklog/6522: [ 452.787817][ T1169] #0: ffff8880a8c9cb70 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 [ 452.797069][ T1169] 1 lock held by syz-executor542/6832: [ 452.803043][ T1169] #0: ffff8880907e7c90 (&sb->s_type->i_mutex_key#13){+.+.}-{3:3}, at: __sock_release+0x86/0x280 [ 452.813805][ T1169] [ 452.816243][ T1169] ============================================= [ 452.816243][ T1169] [ 452.824894][ T1169] NMI backtrace for cpu 1 [ 452.829666][ T1169] CPU: 1 PID: 1169 Comm: khungtaskd Not tainted 5.9.0-rc2-syzkaller #0 [ 452.837885][ T1169] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 452.847915][ T1169] Call Trace: [ 452.851232][ T1169] dump_stack+0x18f/0x20d [ 452.855596][ T1169] nmi_cpu_backtrace.cold+0x70/0xb1 [ 452.860815][ T1169] ? lapic_can_unplug_cpu.cold+0x38/0x38 [ 452.866429][ T1169] nmi_trigger_cpumask_backtrace+0x1b3/0x223 [ 452.872417][ T1169] watchdog+0xd7d/0x1000 [ 452.876642][ T1169] ? reset_hung_task_detector+0x30/0x30 [ 452.882166][ T1169] kthread+0x3b5/0x4a0 [ 452.886212][ T1169] ? __kthread_bind_mask+0xc0/0xc0 [ 452.891310][ T1169] ? __kthread_bind_mask+0xc0/0xc0 [ 452.896442][ T1169] ret_from_fork+0x1f/0x30 [ 452.900952][ T1169] Sending NMI from CPU 1 to CPUs 0: [ 452.907232][ C0] NMI backtrace for cpu 0 [ 452.907239][ C0] CPU: 0 PID: 3901 Comm: systemd-journal Not tainted 5.9.0-rc2-syzkaller #0 [ 452.907246][ C0] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 452.907250][ C0] RIP: 0010:__bfs+0x18b/0x530 [ 452.907261][ C0] Code: 49 81 eb e0 ce 76 8c 48 c1 e8 03 42 80 3c 28 00 0f 85 9c 02 00 00 49 8b 77 10 4c 8d 46 4c 4c 89 c0 48 c1 e8 03 42 0f b6 3c 28 <4c> 89 c0 83 e0 07 83 c0 03 40 38 f8 7c 09 40 84 ff 0f 85 3c 02 00 [ 452.907265][ C0] RSP: 0018:ffffc90005367548 EFLAGS: 00000807 [ 452.907274][ C0] RAX: 1ffffffff18c585c RBX: ffffffff8c801d48 RCX: 1ffffffff18bfd3f [ 452.907279][ C0] RDX: 1ffffffff182ff17 RSI: ffffffff8c62c298 RDI: 0000000000000000 [ 452.907285][ C0] RBP: ffffc90005367628 R08: ffffffff8c62c2e4 R09: ffffffff8c62a800 [ 452.907290][ C0] R10: 00000000000056af R11: 000000000006f7e8 R12: ffffffff815949c0 [ 452.907296][ C0] R13: dffffc0000000000 R14: ffffffff8c62a830 R15: ffffffff8c7dc6c8 [ 452.907302][ C0] FS: 00007f57fef298c0(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000 [ 452.907307][ C0] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 452.907313][ C0] CR2: 00007f57fc2d1000 CR3: 000000009281b000 CR4: 00000000001506f0 [ 452.907318][ C0] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 452.907324][ C0] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 452.907327][ C0] Call Trace: [ 452.907331][ C0] ? is_bpf_text_address+0xa9/0x160 [ 452.907335][ C0] check_irq_usage+0x146/0xb40 [ 452.907340][ C0] ? entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 452.907344][ C0] ? check_usage_forwards+0x4d0/0x4d0 [ 452.907347][ C0] ? __bfs+0x205/0x530 [ 452.907352][ C0] ? kernel_text_address+0xbd/0xf0 [ 452.907355][ C0] ? check_path+0x22/0x40 [ 452.907359][ C0] ? mark_lock+0xbc/0x1710 [ 452.907363][ C0] ? lock_repin_lock+0x460/0x460 [ 452.907367][ C0] ? mark_lock+0xbc/0x1710 [ 452.907370][ C0] __lock_acquire+0x2a81/0x5640 [ 452.907375][ C0] ? lockdep_hardirqs_on_prepare+0x530/0x530 [ 452.907379][ C0] ? __lock_acquire+0x16cb/0x5640 [ 452.907383][ C0] lock_acquire+0x1f1/0xad0 [ 452.907387][ C0] ? __schedule+0x232/0x21e0 [ 452.907390][ C0] ? lock_release+0x8e0/0x8e0 [ 452.907394][ C0] ? rcu_qs+0x2d/0x110 [ 452.907398][ C0] ? lock_is_held_type+0xbb/0xf0 [ 452.907402][ C0] _raw_spin_lock+0x2a/0x40 [ 452.907405][ C0] ? __schedule+0x232/0x21e0 [ 452.907409][ C0] __schedule+0x232/0x21e0 [ 452.907413][ C0] ? mark_lock+0xbc/0x1710 [ 452.907416][ C0] ? mark_lock+0xbc/0x1710 [ 452.907421][ C0] ? io_schedule_timeout+0x140/0x140 [ 452.907425][ C0] ? preempt_schedule_irq+0x88/0x150 [ 452.907429][ C0] ? lockdep_hardirqs_on_prepare+0x354/0x530 [ 452.907434][ C0] preempt_schedule_irq+0xb0/0x150 [ 452.907437][ C0] irqentry_exit+0x65/0x90 [ 452.907442][ C0] asm_sysvec_reschedule_ipi+0x12/0x20 [ 452.907446][ C0] RIP: 0010:lock_acquire+0x27b/0xad0 [ 452.907458][ C0] Code: 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 f8 06 00 00 48 83 3d aa ce 5b 08 00 0f 84 a6 05 00 00 48 8b 7c 24 08 57 9d <0f> 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df 48 03 44 24 10 48 c7 [ 452.907462][ C0] RSP: 0018:ffffc90005367bd8 EFLAGS: 00000286 [ 452.907471][ C0] RAX: 1ffffffff136c779 RBX: ffff888092f5a380 RCX: ffffffff815a14fb [ 452.907476][ C0] RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000286 [ 452.907482][ C0] RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff8c5f39ff [ 452.907488][ C0] R10: fffffbfff18be73f R11: 0000000000000000 R12: 0000000000000001 [ 452.907493][ C0] R13: ffff88809285b8e8 R14: 0000000000000000 R15: ffff888092f5a380 [ 452.907497][ C0] ? __lock_acquire+0x16cb/0x5640 [ 452.907501][ C0] ? lock_release+0x8e0/0x8e0 [ 452.907505][ C0] ? find_held_lock+0x2d/0x110 [ 452.907509][ C0] ? lock_is_held_type+0xbb/0xf0 [ 452.907513][ C0] __might_fault+0x152/0x1d0 [ 452.907516][ C0] ? __might_fault+0xef/0x1d0 [ 452.907520][ C0] _copy_to_user+0x29/0x160 [ 452.907523][ C0] devkmsg_read+0x5c5/0x9c0 [ 452.907526][ C0] ? console_trylock+0x90/0x90 [ 452.907530][ C0] ? security_file_permission+0x248/0x560 [ 452.907532][ C0] ? console_trylock+0x90/0x90 [ 452.907534][ C0] vfs_read+0x1df/0x5a0 [ 452.907536][ C0] ksys_read+0x12d/0x250 [ 452.907538][ C0] ? vfs_write+0x730/0x730 [ 452.907541][ C0] ? __secure_computing+0x104/0x360 [ 452.907543][ C0] do_syscall_64+0x2d/0x70 [ 452.907545][ C0] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 452.907547][ C0] RIP: 0033:0x7f57fe4b9210 [ 452.907555][ C0] Code: 73 01 c3 48 8b 0d 98 7d 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d b9 c1 20 00 00 75 10 b8 00 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 4e fc ff ff 48 89 04 24 [ 452.907557][ C0] RSP: 002b:00007ffc7e485178 EFLAGS: 00000246 ORIG_RAX: 0000000000000000 [ 452.907563][ C0] RAX: ffffffffffffffda RBX: 00007ffc7e487bf0 RCX: 00007f57fe4b9210 [ 452.907566][ C0] RDX: 0000000000002000 RSI: 00007ffc7e4859f0 RDI: 0000000000000009 [ 452.907570][ C0] RBP: 0000000000000000 R08: 0000000000000008 R09: 00007ffc7e4d30f0 [ 452.907573][ C0] R10: 0000000000012bba R11: 0000000000000246 R12: 00007ffc7e4859f0 [ 452.907576][ C0] R13: 00007ffc7e487b48 R14: 0000562d3af48958 R15: 0005ae1aa14f5e90 [ 452.907645][ T1169] Kernel panic - not syncing: hung_task: blocked tasks [ 453.415895][ T1169] CPU: 1 PID: 1169 Comm: khungtaskd Not tainted 5.9.0-rc2-syzkaller #0 [ 453.424101][ T1169] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 453.434139][ T1169] Call Trace: [ 453.437442][ T1169] dump_stack+0x18f/0x20d [ 453.441793][ T1169] panic+0x2e3/0x75c [ 453.445672][ T1169] ? __warn_printk+0xf3/0xf3 [ 453.450240][ T1169] ? lapic_can_unplug_cpu.cold+0x38/0x38 [ 453.455849][ T1169] ? preempt_schedule_thunk+0x16/0x18 [ 453.461209][ T1169] ? watchdog.cold+0x5/0x16b [ 453.465777][ T1169] ? watchdog+0xa82/0x1000 [ 453.470180][ T1169] watchdog.cold+0x16/0x16b [ 453.474675][ T1169] ? reset_hung_task_detector+0x30/0x30 [ 453.480222][ T1169] kthread+0x3b5/0x4a0 [ 453.484293][ T1169] ? __kthread_bind_mask+0xc0/0xc0 [ 453.489393][ T1169] ? __kthread_bind_mask+0xc0/0xc0 [ 453.494493][ T1169] ret_from_fork+0x1f/0x30 [ 453.500120][ T1169] Kernel Offset: disabled [ 453.504452][ T1169] Rebooting in 86400 seconds..