[ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ 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. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.13' (ECDSA) to the list of known hosts. 2020/11/14 21:54:16 parsed 1 programs 2020/11/14 21:54:16 executed programs: 0 syzkaller login: [ 39.021650] IPVS: ftp: loaded support on port[0] = 21 [ 39.127748] chnl_net:caif_netlink_parms(): no params data found [ 39.216497] bridge0: port 1(bridge_slave_0) entered blocking state [ 39.223430] bridge0: port 1(bridge_slave_0) entered disabled state [ 39.230889] device bridge_slave_0 entered promiscuous mode [ 39.240226] bridge0: port 2(bridge_slave_1) entered blocking state [ 39.247113] bridge0: port 2(bridge_slave_1) entered disabled state [ 39.254694] device bridge_slave_1 entered promiscuous mode [ 39.272012] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 39.281040] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 39.300444] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 39.308157] team0: Port device team_slave_0 added [ 39.314270] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 39.321707] team0: Port device team_slave_1 added [ 39.338426] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 39.344891] 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. [ 39.370275] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 39.382053] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 39.388549] 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. [ 39.413916] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 39.424814] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 39.434731] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 39.454956] device hsr_slave_0 entered promiscuous mode [ 39.460749] device hsr_slave_1 entered promiscuous mode [ 39.467388] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 39.475451] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 39.545842] bridge0: port 2(bridge_slave_1) entered blocking state [ 39.552846] bridge0: port 2(bridge_slave_1) entered forwarding state [ 39.559703] bridge0: port 1(bridge_slave_0) entered blocking state [ 39.566400] bridge0: port 1(bridge_slave_0) entered forwarding state [ 39.598621] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 39.606852] 8021q: adding VLAN 0 to HW filter on device bond0 [ 39.615668] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 39.625412] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 39.634629] bridge0: port 1(bridge_slave_0) entered disabled state [ 39.642001] bridge0: port 2(bridge_slave_1) entered disabled state [ 39.650081] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 39.661023] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 39.668147] 8021q: adding VLAN 0 to HW filter on device team0 [ 39.677732] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 39.685817] bridge0: port 1(bridge_slave_0) entered blocking state [ 39.692216] bridge0: port 1(bridge_slave_0) entered forwarding state [ 39.703857] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 39.711527] bridge0: port 2(bridge_slave_1) entered blocking state [ 39.717986] bridge0: port 2(bridge_slave_1) entered forwarding state [ 39.733320] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 39.749537] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 39.760009] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 39.771905] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 39.778922] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 39.786445] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 39.794563] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 39.802231] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 39.810007] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 39.828852] IPv6: ADDRCONF(NETDEV_UP): vxcan0: link is not ready [ 39.836808] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 39.845114] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 39.856341] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 39.869341] IPv6: ADDRCONF(NETDEV_UP): veth0_virt_wifi: link is not ready [ 39.879593] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 39.917019] IPv6: ADDRCONF(NETDEV_UP): veth0_vlan: link is not ready [ 39.926237] IPv6: ADDRCONF(NETDEV_UP): vlan0: link is not ready [ 39.934719] IPv6: ADDRCONF(NETDEV_UP): vlan1: link is not ready [ 39.944892] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 39.953253] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 39.960437] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 39.969591] device veth0_vlan entered promiscuous mode [ 39.979836] device veth1_vlan entered promiscuous mode [ 39.986315] IPv6: ADDRCONF(NETDEV_UP): macvlan0: link is not ready [ 39.996321] IPv6: ADDRCONF(NETDEV_UP): macvlan1: link is not ready [ 40.007775] IPv6: ADDRCONF(NETDEV_UP): veth0_macvtap: link is not ready [ 40.018179] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 40.025602] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 40.033136] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 40.044620] device veth0_macvtap entered promiscuous mode [ 40.050891] IPv6: ADDRCONF(NETDEV_UP): macvtap0: link is not ready [ 40.060208] device veth1_macvtap entered promiscuous mode [ 40.069782] IPv6: ADDRCONF(NETDEV_UP): veth0_to_batadv: link is not ready [ 40.080002] IPv6: ADDRCONF(NETDEV_UP): veth1_to_batadv: link is not ready [ 40.090216] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 40.097799] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 40.107115] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 40.117196] IPv6: ADDRCONF(NETDEV_UP): batadv_slave_1: link is not ready [ 40.124845] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 40.132097] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 40.141136] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 40.261829] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [ 40.269225] wlan0: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 40.288378] wlan0: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 40.294266] IPv6: ADDRCONF(NETDEV_UP): wlan1: link is not ready [ 40.301563] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready [ 40.311749] wlan1: Created IBSS using preconfigured BSSID 50:50:50:50:50:50 [ 40.321853] wlan1: Creating new IBSS network, BSSID 50:50:50:50:50:50 [ 40.329871] IPv6: ADDRCONF(NETDEV_CHANGE): wlan1: link becomes ready [ 40.360336] mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium [ 40.674548] mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium [ 40.674928] mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium [ 40.714539] mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium [ 41.027010] mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium [ 41.027284] mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium [ 41.058954] Bluetooth: hci0: command 0x0409 tx timeout [ 41.073869] mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium [ 41.387099] mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium [ 41.387427] mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium [ 41.416493] mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium [ 41.730479] mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium [ 41.758739] mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium [ 42.074241] mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium [ 42.106490] mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium [ 42.424359] mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium [ 42.424680] mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium [ 42.460304] mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium [ 42.774594] mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium [ 42.775456] mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium [ 42.815250] mac80211_hwsim: wmediumd released netlink socket, switching to perfect channel medium 2020/11/14 21:54:21 result: hanged=false err=executor 0: exit status 67 short netlink ack: 34 (errno 14) child failed (errno 0) loop exited with status 67 short netlink ack: 34 (errno 14) child failed (errno 0) loop exited with status 67 2020/11/14 21:54:21 executed programs: 8 [ 44.197937] IPVS: ftp: loaded support on port[0] = 21 [ 44.452654] chnl_net:caif_netlink_parms(): no params data found [ 44.485695] ------------[ cut here ]------------ [ 44.491838] Have pending ack frames! [ 44.496277] WARNING: CPU: 0 PID: 157 at net/mac80211/main.c:1265 ieee80211_free_ack_frame+0x48/0x50 [ 44.505478] Kernel panic - not syncing: panic_on_warn set ... [ 44.505478] [ 44.512996] CPU: 0 PID: 157 Comm: kworker/u4:3 Not tainted 4.19.157-syzkaller #0 [ 44.518354] bridge0: port 1(bridge_slave_0) entered blocking state [ 44.520528] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 44.526993] bridge0: port 1(bridge_slave_0) entered disabled state [ 44.536256] Workqueue: netns cleanup_net [ 44.536263] Call Trace: [ 44.536280] dump_stack+0x1fc/0x2fe [ 44.536302] panic+0x26a/0x50e [ 44.536315] ? __warn_printk+0xf3/0xf3 [ 44.536333] ? ieee80211_free_ack_frame+0x48/0x50 [ 44.536348] ? __probe_kernel_read+0x130/0x1b0 [ 44.552224] device bridge_slave_0 entered promiscuous mode [ 44.552907] ? __warn.cold+0x5/0x61 [ 44.557630] bridge0: port 2(bridge_slave_1) entered blocking state [ 44.559958] ? __warn+0xe4/0x200 [ 44.559975] ? ieee80211_free_ack_frame+0x48/0x50 [ 44.559989] __warn.cold+0x20/0x61 [ 44.560002] ? ieee80211_free_ack_frame+0x48/0x50 [ 44.560019] report_bug+0x262/0x2b0 [ 44.568061] bridge0: port 2(bridge_slave_1) entered disabled state [ 44.569526] do_error_trap+0x1d7/0x310 [ 44.569540] ? math_error+0x310/0x310 [ 44.569554] ? irq_work_claim+0xa6/0xc0 [ 44.569568] ? irq_work_queue+0x29/0x80 [ 44.569583] ? error_entry+0x72/0xd0 [ 44.579280] device bridge_slave_1 entered promiscuous mode [ 44.585374] ? trace_hardirqs_off_caller+0x6e/0x210 [ 44.606907] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 44.612259] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 44.612276] invalid_op+0x14/0x20 [ 44.612291] RIP: 0010:ieee80211_free_ack_frame+0x48/0x50 [ 44.612305] Code: e8 2d 77 b0 f9 48 89 ef e8 35 7c d9 fe 31 c0 5b 5d c3 e8 1b 77 b0 f9 48 c7 c7 60 a3 66 89 c6 05 32 24 5a 03 01 e8 83 54 84 f9 <0f> 0b eb d2 0f 1f 40 00 41 57 41 56 41 55 41 54 49 bc 00 00 00 00 [ 44.618182] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 44.619967] RSP: 0018:ffff8880b4c87a28 EFLAGS: 00010282 [ 44.619978] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 44.619985] RDX: 0000000000000000 RSI: ffffffff814fdb21 RDI: ffffed1016990f37 [ 44.619992] RBP: ffff8880b05393c0 R08: 0000000000000001 R09: 0000000000000000 [ 44.620000] R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880953c92d8 [ 44.620007] R13: dffffc0000000000 R14: ffffffff87b45810 R15: 0000000000000000 [ 44.620024] ? ieee80211_free_hw+0x140/0x140 [ 44.620043] ? vprintk_func+0x81/0x17e [ 44.646182] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 44.649823] ? ieee80211_free_ack_frame+0x48/0x50 [ 44.649837] idr_for_each+0x132/0x290 [ 44.649854] ? idr_find+0x50/0x50 [ 44.656937] team0: Port device team_slave_0 added [ 44.659074] ? kfree+0x110/0x210 [ 44.659094] ? device_remove_bin_file+0x30/0x30 [ 44.659107] ? kfree_const+0x51/0x60 [ 44.659124] ieee80211_free_hw+0x88/0x140 [ 44.659139] hwsim_exit_net+0xbdf/0x1580 [ 44.670343] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 44.683486] ? mac80211_hwsim_netlink_notify+0x1400/0x1400 [ 44.683504] ? nf_unregister_net_hooks+0x5d/0xe0 [ 44.683517] ? mac80211_hwsim_netlink_notify+0x1400/0x1400 [ 44.683529] ops_exit_list+0xa5/0x150 [ 44.683545] cleanup_net+0x3b4/0x8b0 [ 44.695231] team0: Port device team_slave_1 added [ 44.696425] ? net_drop_ns+0x90/0x90 [ 44.720980] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 44.725650] ? check_preemption_disabled+0x40/0x280 [ 44.725666] process_one_work+0x864/0x1570 [ 44.725686] ? pwq_dec_nr_in_flight+0x2d0/0x2d0 [ 44.725710] worker_thread+0x64c/0x1130 [ 44.725729] ? __kthread_parkme+0x133/0x1e0 [ 44.725746] ? process_one_work+0x1570/0x1570 [ 44.733808] 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. [ 44.737599] kthread+0x33f/0x460 [ 44.745512] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 44.748131] ? kthread_park+0x180/0x180 [ 44.756125] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 44.758130] ret_from_fork+0x24/0x30 [ 44.762862] 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. [ 44.770726] Kernel Offset: disabled [ 44.941503] Rebooting in 86400 seconds..