[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.8' (ECDSA) to the list of known hosts. syzkaller login: [ 61.678288][ T7195] IPVS: ftp: loaded support on port[0] = 21 [ 61.760552][ T7195] chnl_net:caif_netlink_parms(): no params data found [ 61.814734][ T7195] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.822752][ T7195] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.831176][ T7195] device bridge_slave_0 entered promiscuous mode [ 61.840108][ T7195] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.847205][ T7195] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.855271][ T7195] device bridge_slave_1 entered promiscuous mode [ 61.876908][ T7195] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 61.887872][ T7195] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 61.910926][ T7195] team0: Port device team_slave_0 added [ 61.918168][ T7195] team0: Port device team_slave_1 added [ 61.935869][ T7195] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 61.943469][ T7195] 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. [ 61.970576][ T7195] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 61.983268][ T7195] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 61.991473][ T7195] 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. [ 62.018457][ T7195] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 62.072550][ T7195] device hsr_slave_0 entered promiscuous mode [ 62.129390][ T7195] device hsr_slave_1 entered promiscuous mode [ 62.275282][ T7195] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 62.332288][ T7195] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 62.411674][ T7195] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 62.461627][ T7195] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 62.554186][ T7195] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.561435][ T7195] bridge0: port 2(bridge_slave_1) entered forwarding state [ 62.569286][ T7195] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.576355][ T7195] bridge0: port 1(bridge_slave_0) entered forwarding state [ 62.622037][ T7195] 8021q: adding VLAN 0 to HW filter on device bond0 [ 62.637469][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 62.651001][ T12] bridge0: port 1(bridge_slave_0) entered disabled state [ 62.660208][ T12] bridge0: port 2(bridge_slave_1) entered disabled state [ 62.668201][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 62.682038][ T7195] 8021q: adding VLAN 0 to HW filter on device team0 [ 62.694453][ T3022] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 62.703800][ T3022] bridge0: port 1(bridge_slave_0) entered blocking state [ 62.710955][ T3022] bridge0: port 1(bridge_slave_0) entered forwarding state [ 62.731249][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 62.740956][ T12] bridge0: port 2(bridge_slave_1) entered blocking state [ 62.748075][ T12] bridge0: port 2(bridge_slave_1) entered forwarding state [ 62.757144][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 62.767398][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 62.779273][ T3022] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 62.788225][ T3022] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 62.806177][ T7195] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 62.817058][ T7195] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 62.836190][ T3020] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 62.845383][ T3020] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 62.854989][ T3020] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 62.864304][ T3020] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 62.874153][ T3020] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 62.891653][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 62.899729][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 62.913146][ T7195] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 62.933245][ T3020] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 62.942625][ T3020] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 62.963674][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 62.972742][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 62.984325][ T7195] device veth0_vlan entered promiscuous mode [ 62.991596][ T2725] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 63.000858][ T2725] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 63.014789][ T7195] device veth1_vlan entered promiscuous mode [ 63.036746][ T3020] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 63.045547][ T3020] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 63.054427][ T3020] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 63.064623][ T3020] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 63.075971][ T7195] device veth0_macvtap entered promiscuous mode [ 63.087417][ T7195] device veth1_macvtap entered promiscuous mode [ 63.104347][ T7195] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 63.112311][ T2725] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 63.121832][ T2725] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 63.130930][ T2725] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 63.141040][ T2725] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 63.153415][ T7195] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 63.160961][ T3020] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 63.170633][ T3020] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready executing program [ 66.419363][ C1] ================================================================== [ 66.428042][ C1] BUG: KASAN: slab-out-of-bounds in ip_icmp_error+0x52a/0x5a0 [ 66.435628][ C1] Read of size 1 at addr ffff8880919a67ff by task ksoftirqd/1/16 [ 66.443334][ C1] [ 66.445664][ C1] CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.7.0-rc6-syzkaller #0 [ 66.453796][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.463977][ C1] Call Trace: [ 66.467275][ C1] dump_stack+0x188/0x20d [ 66.471639][ C1] print_address_description.constprop.0.cold+0xd3/0x413 [ 66.478662][ C1] ? skb_splice_bits+0x1a0/0x1a0 [ 66.483583][ C1] ? __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 66.489380][ C1] ? vprintk_func+0x81/0x17e [ 66.493966][ C1] ? ip_icmp_error+0x52a/0x5a0 [ 66.498789][ C1] __kasan_report.cold+0x20/0x38 [ 66.503813][ C1] ? ip_icmp_error+0x52a/0x5a0 [ 66.508563][ C1] ? ip_icmp_error+0x52a/0x5a0 [ 66.513407][ C1] kasan_report+0x33/0x50 [ 66.517744][ C1] ip_icmp_error+0x52a/0x5a0 [ 66.522341][ C1] tcp_v4_err+0x9b2/0x1d00 [ 66.526900][ C1] ? tcp_v4_do_rcv+0x8b0/0x8b0 [ 66.531694][ C1] icmp_socket_deliver+0x1e4/0x360 [ 66.536979][ C1] icmp_unreach+0x33b/0xab0 [ 66.541482][ C1] icmp_rcv+0xee6/0x15f0 [ 66.545716][ C1] ip_protocol_deliver_rcu+0x57/0x880 [ 66.551079][ C1] ip_local_deliver_finish+0x220/0x360 [ 66.557482][ C1] ip_local_deliver+0x1c8/0x4e0 [ 66.562508][ C1] ? ip_local_deliver_finish+0x360/0x360 [ 66.568167][ C1] ? ip_rcv+0x24e/0x3c0 [ 66.572484][ C1] ? ip_protocol_deliver_rcu+0x880/0x880 [ 66.578105][ C1] ? lock_downgrade+0x840/0x840 [ 66.582975][ C1] ? ip_rcv_finish_core.isra.0+0x606/0x1ec0 [ 66.588924][ C1] ip_rcv_finish+0x1da/0x2f0 [ 66.593567][ C1] ip_rcv+0xd0/0x3c0 [ 66.597452][ C1] ? ip_local_deliver+0x4e0/0x4e0 [ 66.602485][ C1] ? ip_rcv_finish_core.isra.0+0x1ec0/0x1ec0 [ 66.608453][ C1] ? ip_local_deliver+0x4e0/0x4e0 [ 66.613482][ C1] __netif_receive_skb_one_core+0x114/0x180 [ 66.619366][ C1] ? __netif_receive_skb_core+0x31c0/0x31c0 [ 66.625263][ C1] ? do_raw_spin_lock+0x129/0x2e0 [ 66.630298][ C1] ? rwlock_bug.part.0+0x90/0x90 [ 66.635247][ C1] __netif_receive_skb+0x27/0x1c0 [ 66.640277][ C1] process_backlog+0x21e/0x7a0 [ 66.645023][ C1] ? net_rx_action+0x25f/0x1070 [ 66.649976][ C1] net_rx_action+0x4c2/0x1070 [ 66.654743][ C1] ? napi_busy_loop+0x9e0/0x9e0 [ 66.659598][ C1] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 66.665793][ C1] __do_softirq+0x26c/0x9f7 [ 66.670312][ C1] ? takeover_tasklets+0x810/0x810 [ 66.675644][ C1] run_ksoftirqd+0x89/0x100 [ 66.680193][ C1] smpboot_thread_fn+0x653/0x9e0 [ 66.685254][ C1] ? __smpboot_create_thread.part.0+0x340/0x340 [ 66.691647][ C1] ? __kthread_parkme+0x13f/0x1e0 [ 66.696797][ C1] ? __smpboot_create_thread.part.0+0x340/0x340 [ 66.703085][ C1] kthread+0x388/0x470 [ 66.707169][ C1] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 66.712878][ C1] ret_from_fork+0x24/0x30 [ 66.717281][ C1] [ 66.719653][ C1] Allocated by task 1: [ 66.723813][ C1] save_stack+0x1b/0x40 [ 66.728137][ C1] __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 66.733836][ C1] kmem_cache_alloc+0x11b/0x740 [ 66.738681][ C1] getname_flags+0xd2/0x5b0 [ 66.743221][ C1] do_sys_openat2+0x3fc/0x7d0 [ 66.747933][ C1] do_sys_open+0xc3/0x140 [ 66.752297][ C1] do_syscall_64+0xf6/0x7d0 [ 66.756921][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 66.762852][ C1] [ 66.765163][ C1] Freed by task 1: [ 66.768900][ C1] save_stack+0x1b/0x40 [ 66.773033][ C1] __kasan_slab_free+0xf7/0x140 [ 66.777889][ C1] kmem_cache_free+0x7f/0x320 [ 66.782569][ C1] putname+0xe1/0x120 [ 66.786549][ C1] do_sys_openat2+0x467/0x7d0 [ 66.791225][ C1] do_sys_open+0xc3/0x140 [ 66.795542][ C1] do_syscall_64+0xf6/0x7d0 [ 66.800046][ C1] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 66.805913][ C1] [ 66.808223][ C1] The buggy address belongs to the object at ffff8880919a6a80 [ 66.808223][ C1] which belongs to the cache names_cache of size 4096 [ 66.822371][ C1] The buggy address is located 641 bytes to the left of [ 66.822371][ C1] 4096-byte region [ffff8880919a6a80, ffff8880919a7a80) [ 66.836152][ C1] The buggy address belongs to the page: [ 66.841792][ C1] page:ffffea0002466980 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 head:ffffea0002466980 order:1 compound_mapcount:0 [ 66.855227][ C1] flags: 0xfffe0000010200(slab|head) [ 66.860501][ C1] raw: 00fffe0000010200 ffffea0002465988 ffffea0002469b08 ffff8880aa1ec000 [ 66.869074][ C1] raw: 0000000000000000 ffff8880919a6a80 0000000100000001 0000000000000000 [ 66.877658][ C1] page dumped because: kasan: bad access detected [ 66.884080][ C1] [ 66.886479][ C1] Memory state around the buggy address: [ 66.892098][ C1] ffff8880919a6680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 66.900138][ C1] ffff8880919a6700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 66.908178][ C1] >ffff8880919a6780: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 66.916230][ C1] ^ [ 66.924199][ C1] ffff8880919a6800: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 66.932261][ C1] ffff8880919a6880: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc [ 66.940396][ C1] ================================================================== [ 66.948452][ C1] Disabling lock debugging due to kernel taint [ 66.954668][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 66.961260][ C1] CPU: 1 PID: 16 Comm: ksoftirqd/1 Tainted: G B 5.7.0-rc6-syzkaller #0 [ 66.970798][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.980959][ C1] Call Trace: [ 66.984257][ C1] dump_stack+0x188/0x20d [ 66.988590][ C1] panic+0x2e3/0x75c [ 66.992488][ C1] ? add_taint.cold+0x16/0x16 [ 66.997270][ C1] ? ip_icmp_error+0x52a/0x5a0 [ 67.002022][ C1] ? trace_hardirqs_on+0x55/0x220 [ 67.007201][ C1] ? ip_icmp_error+0x52a/0x5a0 [ 67.012035][ C1] end_report+0x4d/0x53 [ 67.016181][ C1] __kasan_report.cold+0xd/0x38 [ 67.021052][ C1] ? ip_icmp_error+0x52a/0x5a0 [ 67.025797][ C1] ? ip_icmp_error+0x52a/0x5a0 [ 67.030546][ C1] kasan_report+0x33/0x50 [ 67.034863][ C1] ip_icmp_error+0x52a/0x5a0 [ 67.039484][ C1] tcp_v4_err+0x9b2/0x1d00 [ 67.043912][ C1] ? tcp_v4_do_rcv+0x8b0/0x8b0 [ 67.048678][ C1] icmp_socket_deliver+0x1e4/0x360 [ 67.053779][ C1] icmp_unreach+0x33b/0xab0 [ 67.058270][ C1] icmp_rcv+0xee6/0x15f0 [ 67.062515][ C1] ip_protocol_deliver_rcu+0x57/0x880 [ 67.067872][ C1] ip_local_deliver_finish+0x220/0x360 [ 67.073310][ C1] ip_local_deliver+0x1c8/0x4e0 [ 67.078438][ C1] ? ip_local_deliver_finish+0x360/0x360 [ 67.084049][ C1] ? ip_rcv+0x24e/0x3c0 [ 67.088182][ C1] ? ip_protocol_deliver_rcu+0x880/0x880 [ 67.093810][ C1] ? lock_downgrade+0x840/0x840 [ 67.098642][ C1] ? ip_rcv_finish_core.isra.0+0x606/0x1ec0 [ 67.104523][ C1] ip_rcv_finish+0x1da/0x2f0 [ 67.109097][ C1] ip_rcv+0xd0/0x3c0 [ 67.113010][ C1] ? ip_local_deliver+0x4e0/0x4e0 [ 67.118024][ C1] ? ip_rcv_finish_core.isra.0+0x1ec0/0x1ec0 [ 67.124086][ C1] ? ip_local_deliver+0x4e0/0x4e0 [ 67.129176][ C1] __netif_receive_skb_one_core+0x114/0x180 [ 67.135083][ C1] ? __netif_receive_skb_core+0x31c0/0x31c0 [ 67.140952][ C1] ? do_raw_spin_lock+0x129/0x2e0 [ 67.146003][ C1] ? rwlock_bug.part.0+0x90/0x90 [ 67.150926][ C1] __netif_receive_skb+0x27/0x1c0 [ 67.155985][ C1] process_backlog+0x21e/0x7a0 [ 67.160859][ C1] ? net_rx_action+0x25f/0x1070 [ 67.165688][ C1] net_rx_action+0x4c2/0x1070 [ 67.170361][ C1] ? napi_busy_loop+0x9e0/0x9e0 [ 67.175220][ C1] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 67.181266][ C1] __do_softirq+0x26c/0x9f7 [ 67.185774][ C1] ? takeover_tasklets+0x810/0x810 [ 67.190882][ C1] run_ksoftirqd+0x89/0x100 [ 67.195379][ C1] smpboot_thread_fn+0x653/0x9e0 [ 67.200342][ C1] ? __smpboot_create_thread.part.0+0x340/0x340 [ 67.206608][ C1] ? __kthread_parkme+0x13f/0x1e0 [ 67.211621][ C1] ? __smpboot_create_thread.part.0+0x340/0x340 [ 67.217881][ C1] kthread+0x388/0x470 [ 67.222097][ C1] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 67.227822][ C1] ret_from_fork+0x24/0x30 [ 67.233626][ C1] Kernel Offset: disabled [ 67.237991][ C1] Rebooting in 86400 seconds..