[ 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. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.152' (ECDSA) to the list of known hosts. syzkaller login: [ 54.964546] IPVS: ftp: loaded support on port[0] = 21 [ 55.033975] chnl_net:caif_netlink_parms(): no params data found [ 55.118454] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.125384] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.133282] device bridge_slave_0 entered promiscuous mode [ 55.140448] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.147195] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.155288] device bridge_slave_1 entered promiscuous mode [ 55.172052] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 55.181802] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 55.200007] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 55.207433] team0: Port device team_slave_0 added [ 55.213293] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 55.220567] team0: Port device team_slave_1 added [ 55.236391] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 55.242695] 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. [ 55.267952] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 55.279277] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 55.285705] 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. [ 55.310938] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 55.321776] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 55.329472] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 55.348326] device hsr_slave_0 entered promiscuous mode [ 55.354093] device hsr_slave_1 entered promiscuous mode [ 55.360065] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 55.367281] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 55.430938] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.437389] bridge0: port 2(bridge_slave_1) entered forwarding state [ 55.444340] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.450699] bridge0: port 1(bridge_slave_0) entered forwarding state [ 55.481545] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 55.488605] 8021q: adding VLAN 0 to HW filter on device bond0 [ 55.497263] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 55.506128] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 55.515646] bridge0: port 1(bridge_slave_0) entered disabled state [ 55.522921] bridge0: port 2(bridge_slave_1) entered disabled state [ 55.529873] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 55.540822] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 55.546965] 8021q: adding VLAN 0 to HW filter on device team0 [ 55.564825] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 55.573296] bridge0: port 1(bridge_slave_0) entered blocking state [ 55.579643] bridge0: port 1(bridge_slave_0) entered forwarding state [ 55.586814] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 55.595106] bridge0: port 2(bridge_slave_1) entered blocking state [ 55.601438] bridge0: port 2(bridge_slave_1) entered forwarding state [ 55.609131] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 55.617645] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 55.627027] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 55.639549] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 55.649470] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 55.661817] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 55.668932] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 55.677046] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 55.684781] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 55.697053] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 55.706573] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 55.714586] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 55.724630] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 55.737844] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 55.747257] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 55.780456] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 55.787594] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 55.795163] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 55.804348] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 55.811863] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 55.819046] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 55.827568] device veth0_vlan entered promiscuous mode [ 55.837341] device veth1_vlan entered promiscuous mode [ 55.843964] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 55.852155] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 55.864014] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 55.874306] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 55.881788] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 55.889689] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 55.899055] device veth0_macvtap entered promiscuous mode [ 55.906082] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 55.915382] device veth1_macvtap entered promiscuous mode [ 55.924146] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 55.934644] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 55.945205] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 55.951918] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 55.961668] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 55.971797] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 55.979200] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 90.279366] ------------[ cut here ]------------ [ 90.284543] WARNING: CPU: 0 PID: 9143 at net/ipv4/tcp_input.c:1974 tcp_enter_loss.cold+0x11/0x18 [ 90.293460] Kernel panic - not syncing: panic_on_warn set ... [ 90.293460] [ 90.300809] CPU: 0 PID: 9143 Comm: syz-executor988 Not tainted 4.19.211-syzkaller #0 [ 90.308670] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 90.318004] Call Trace: [ 90.320588] dump_stack+0x1fc/0x2ef [ 90.324200] panic+0x26a/0x50e [ 90.327395] ? __warn_printk+0xf3/0xf3 [ 90.331266] ? tcp_enter_loss.cold+0x11/0x18 [ 90.335667] ? __probe_kernel_read+0x130/0x1b0 [ 90.340236] ? __warn.cold+0x5/0x5a [ 90.343842] ? __warn+0xe4/0x200 [ 90.347287] ? tcp_enter_loss.cold+0x11/0x18 [ 90.351678] __warn.cold+0x20/0x5a [ 90.355261] ? tcp_enter_loss.cold+0x11/0x18 [ 90.359657] report_bug+0x262/0x2b0 [ 90.363269] do_error_trap+0x1d7/0x310 [ 90.367147] ? math_error+0x310/0x310 [ 90.370935] ? __irq_work_queue_local+0x101/0x160 [ 90.375760] ? irq_work_queue+0x29/0x80 [ 90.379716] ? error_entry+0x72/0xd0 [ 90.383412] ? trace_hardirqs_off_caller+0x6e/0x210 [ 90.388505] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 90.393341] invalid_op+0x14/0x20 [ 90.396831] RIP: 0010:tcp_enter_loss.cold+0x11/0x18 [ 90.401825] Code: ee 55 89 e8 2a eb e0 ff 0f 0b e9 fe 4a c7 fe 48 89 cf e8 10 96 85 f9 eb ce e8 a9 b9 4f f9 48 c7 c7 e0 ee 55 89 e8 08 eb e0 ff <0f> 0b e9 6c 71 c7 fe e8 91 b9 4f f9 48 c7 c7 e0 ee 55 89 e8 f0 ea [ 90.420709] RSP: 0018:ffff8880aa1ffa88 EFLAGS: 00010282 [ 90.426060] RAX: 0000000000000024 RBX: 0000000000000011 RCX: 0000000000000000 [ 90.433310] RDX: 0000000000000000 RSI: ffffffff814dff01 RDI: ffffed101543ff43 [ 90.440559] RBP: 0000000000000009 R08: 0000000000000024 R09: 0000000000000000 [ 90.447825] R10: 0000000000000005 R11: 0000000000000000 R12: dffffc0000000000 [ 90.455090] R13: ffff8880ae814954 R14: ffffed1015d0281e R15: ffff8880ae8140c0 [ 90.462352] ? vprintk_func+0x81/0x180 [ 90.466242] ? tcp_enter_loss.cold+0x11/0x18 [ 90.470636] tcp_retransmit_timer+0x25de/0x33f0 [ 90.475288] ? release_sock+0x1b/0x1b0 [ 90.479242] ? tcp_delack_timer+0x270/0x270 [ 90.483548] ? kvm_sched_clock_read+0x14/0x40 [ 90.488021] ? sched_clock+0x2a/0x40 [ 90.491719] ? sched_clock_cpu+0x18/0x1b0 [ 90.495859] ? lock_downgrade+0x720/0x720 [ 90.499989] tcp_write_timer_handler+0x5e6/0xa60 [ 90.504726] tcp_release_cb+0x275/0x2f0 [ 90.508681] ? tcp_tsq_write.part.0+0x2c0/0x2c0 [ 90.513333] release_sock+0xb4/0x1b0 [ 90.517035] do_tcp_setsockopt.constprop.0+0x42e/0x2340 [ 90.522383] ? tcp_get_md5sig_pool+0xc0/0xc0 [ 90.526869] ? aa_sk_perm+0x534/0x930 [ 90.530652] ? aa_af_perm+0x230/0x230 [ 90.534437] tcp_setsockopt+0xb2/0xd0 [ 90.538219] __sys_setsockopt+0x14d/0x240 [ 90.542525] ? kernel_accept+0x310/0x310 [ 90.546575] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 90.551939] __x64_sys_setsockopt+0xba/0x150 [ 90.556331] ? lockdep_hardirqs_on+0x3a8/0x5c0 [ 90.560893] do_syscall_64+0xf9/0x620 [ 90.564677] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 90.569846] RIP: 0033:0x7f3989ee58a9 [ 90.573539] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 15 00 00 90 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 [ 90.592868] RSP: 002b:00007f3989e722f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 90.600570] RAX: ffffffffffffffda RBX: 00007f3989f6e4b0 RCX: 00007f3989ee58a9 [ 90.607830] RDX: 0000000000000016 RSI: 0000000000000006 RDI: 0000000000000003 [ 90.615081] RBP: 00007f3989f6e4bc R08: 000000002000019f R09: 0000000000000000 [ 90.622330] R10: 0000000020000000 R11: 0000000000000246 R12: 00007f3989f3b70c [ 90.630191] R13: 00007f3989f3b4a8 R14: 0000000020000640 R15: 00007f3989f6e4b8 [ 90.637832] Kernel Offset: disabled [ 90.641497] Rebooting in 86400 seconds..