[ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Reached target Login Prompts. [ 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 '10.128.1.116' (ECDSA) to the list of known hosts. syzkaller login: [ 81.305639][ T37] audit: type=1400 audit(1622161326.460:8): avc: denied { execmem } for pid=8450 comm="syz-executor812" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 81.417213][ T8451] chnl_net:caif_netlink_parms(): no params data found [ 81.476317][ T8451] bridge0: port 1(bridge_slave_0) entered blocking state [ 81.483583][ T8451] bridge0: port 1(bridge_slave_0) entered disabled state [ 81.493131][ T8451] device bridge_slave_0 entered promiscuous mode [ 81.503201][ T8451] bridge0: port 2(bridge_slave_1) entered blocking state [ 81.510490][ T8451] bridge0: port 2(bridge_slave_1) entered disabled state [ 81.518665][ T8451] device bridge_slave_1 entered promiscuous mode [ 81.540582][ T8451] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 81.552389][ T8451] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 81.575188][ T8451] team0: Port device team_slave_0 added [ 81.583678][ T8451] team0: Port device team_slave_1 added [ 81.602003][ T8451] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 81.608955][ T8451] 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. [ 81.635231][ T8451] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 81.647976][ T8451] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 81.655158][ T8451] 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. [ 81.681440][ T8451] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 81.709420][ T8451] device hsr_slave_0 entered promiscuous mode [ 81.716247][ T8451] device hsr_slave_1 entered promiscuous mode [ 81.830207][ T8451] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 81.843113][ T8451] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 81.855879][ T8451] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 81.865818][ T8451] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 81.897142][ T8451] bridge0: port 2(bridge_slave_1) entered blocking state [ 81.904517][ T8451] bridge0: port 2(bridge_slave_1) entered forwarding state [ 81.913108][ T8451] bridge0: port 1(bridge_slave_0) entered blocking state [ 81.920329][ T8451] bridge0: port 1(bridge_slave_0) entered forwarding state [ 81.969696][ T8451] 8021q: adding VLAN 0 to HW filter on device bond0 [ 81.985324][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 81.997258][ T20] bridge0: port 1(bridge_slave_0) entered disabled state [ 82.006743][ T20] bridge0: port 2(bridge_slave_1) entered disabled state [ 82.015437][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 82.029288][ T8451] 8021q: adding VLAN 0 to HW filter on device team0 [ 82.041998][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 82.050338][ T20] bridge0: port 1(bridge_slave_0) entered blocking state [ 82.057572][ T20] bridge0: port 1(bridge_slave_0) entered forwarding state [ 82.072761][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 82.081695][ T5] bridge0: port 2(bridge_slave_1) entered blocking state [ 82.088863][ T5] bridge0: port 2(bridge_slave_1) entered forwarding state [ 82.109581][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 82.118146][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 82.131260][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 82.149889][ T8451] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 82.160543][ T8451] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 82.174450][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 82.184220][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 82.193407][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 82.212414][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 82.219835][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 82.236083][ T8451] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 82.257024][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 82.276797][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 82.285157][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 82.294586][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 82.305957][ T8451] device veth0_vlan entered promiscuous mode [ 82.318292][ T8451] device veth1_vlan entered promiscuous mode [ 82.342812][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 82.351639][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 82.360490][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 82.373571][ T8451] device veth0_macvtap entered promiscuous mode [ 82.383976][ T8451] device veth1_macvtap entered promiscuous mode [ 82.403659][ T8451] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 82.411537][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 82.421798][ T20] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 82.432863][ T8451] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 82.446354][ T8451] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.456218][ T8451] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.466867][ T8451] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.476069][ T8451] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 [ 82.487637][ T7] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready executing program [ 82.497151][ T7] 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 [ 83.065961][ T8705] hsr_slave_0: hsr_addr_subst_dest: Unknown node [ 83.072861][ T8705] hsr_slave_1: hsr_addr_subst_dest: Unknown node [ 83.079285][ T8705] hsr_slave_0: hsr_addr_subst_dest: Unknown node [ 83.085884][ T8705] hsr_slave_1: hsr_addr_subst_dest: Unknown node [ 83.092581][ T8705] hsr_slave_0: hsr_addr_subst_dest: Unknown node [ 83.099081][ T8705] hsr_slave_1: hsr_addr_subst_dest: Unknown node [ 83.105675][ T8705] hsr_slave_0: hsr_addr_subst_dest: Unknown node executing program executing program [ 83.112148][ T8705] hsr_slave_1: hsr_addr_subst_dest: Unknown node [ 83.118678][ T8705] hsr_slave_0: hsr_addr_subst_dest: Unknown node [ 83.125130][ T8705] hsr_slave_1: hsr_addr_subst_dest: Unknown node 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 [ 83.359805][ T8721] ------------[ cut here ]------------ [ 83.365508][ T8721] kernel BUG at net/core/dev.c:3313! [ 83.370843][ T8721] invalid opcode: 0000 [#1] PREEMPT SMP KASAN [ 83.376901][ T8721] CPU: 1 PID: 8721 Comm: syz-executor812 Not tainted 5.13.0-rc3-syzkaller #0 [ 83.385648][ T8721] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 83.395703][ T8721] RIP: 0010:skb_checksum_help+0x4b4/0x5b0 [ 83.401451][ T8721] Code: fa 45 89 ec e9 59 ff ff ff e8 38 57 69 fa 48 89 ef 41 bc ea ff ff ff e8 2a f9 ff ff eb c7 e8 23 57 69 fa 0f 0b e8 1c 57 69 fa <0f> 0b 4c 89 f7 e8 62 df ad fa e9 79 fb ff ff e8 68 df ad fa e9 28 [ 83.421049][ T8721] RSP: 0018:ffffc9000211f0e8 EFLAGS: 00010293 [ 83.427107][ T8721] RAX: 0000000000000000 RBX: 00000000000003d2 RCX: 0000000000000000 [ 83.435072][ T8721] RDX: ffff8880147ac280 RSI: ffffffff870aba44 RDI: 0000000000000003 [ 83.443031][ T8721] RBP: ffff88803c9dbe00 R08: 00000000000003d4 R09: 0000000000000000 [ 83.450991][ T8721] R10: ffffffff870ab910 R11: 0000000000000000 R12: 00000000000000e0 [ 83.458956][ T8721] R13: 00000000000003d4 R14: ffff88803c9dbe80 R15: 00000000000003d2 [ 83.467001][ T8721] FS: 0000000000afc300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 83.476008][ T8721] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 83.482586][ T8721] CR2: 0000000000000000 CR3: 000000003cbac000 CR4: 00000000001506e0 [ 83.490647][ T8721] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 83.498608][ T8721] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 83.506565][ T8721] Call Trace: [ 83.509835][ T8721] skb_csum_hwoffload_help+0x126/0x1e0 [ 83.515296][ T8721] validate_xmit_skb+0xbd5/0xee0 [ 83.520228][ T8721] __dev_queue_xmit+0x8ef/0x3130 [ 83.525153][ T8721] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 83.530430][ T8721] ? __ip_finish_output+0x396/0x640 [ 83.535657][ T8721] ? mark_held_locks+0x9f/0xe0 [ 83.540423][ T8721] ? ip_finish_output2+0x15e9/0x21f0 [ 83.545699][ T8721] ip_finish_output2+0xeec/0x21f0 [ 83.550732][ T8721] ? ip_fragment.constprop.0+0x240/0x240 [ 83.556367][ T8721] ? __ip_finish_output+0x640/0x640 [ 83.561578][ T8721] ? __ip_flush_pending_frames.constprop.0+0x2c0/0x2c0 [ 83.568413][ T8721] __ip_finish_output+0x396/0x640 [ 83.573427][ T8721] ip_finish_output+0x35/0x200 [ 83.578181][ T8721] ip_output+0x196/0x310 [ 83.582415][ T8721] ip_local_out+0xaf/0x1a0 [ 83.586820][ T8721] iptunnel_xmit+0x5a3/0x9c0 [ 83.591395][ T8721] geneve_xmit+0x112d/0x3430 [ 83.595976][ T8721] ? geneve_fill_metadata_dst+0xb70/0xb70 [ 83.601681][ T8721] ? find_held_lock+0x2d/0x110 [ 83.606433][ T8721] ? dev_queue_xmit_nit+0x7f4/0xa90 [ 83.611649][ T8721] ? lock_downgrade+0x6e0/0x6e0 [ 83.616525][ T8721] ? dev_hard_start_xmit+0x66a/0x920 [ 83.621799][ T8721] dev_hard_start_xmit+0x1eb/0x920 [ 83.626898][ T8721] sch_direct_xmit+0x19f/0xba0 [ 83.631649][ T8721] ? dev_watchdog+0xd00/0xd00 [ 83.636500][ T8721] ? cake_enqueue+0x39a0/0x39f0 [ 83.641349][ T8721] __qdisc_run+0x4bc/0x1680 [ 83.645850][ T8721] __dev_queue_xmit+0x19d5/0x3130 [ 83.650956][ T8721] ? netdev_core_pick_tx+0x2e0/0x2e0 [ 83.656236][ T8721] ? __sanitizer_cov_trace_cmp4+0x1c/0x70 [ 83.662056][ T8721] ? __sanitizer_cov_trace_const_cmp2+0x22/0x80 [ 83.668381][ T8721] ? packet_parse_headers+0x11d/0x490 [ 83.673742][ T8721] ? packet_poll+0x600/0x600 [ 83.678319][ T8721] packet_sendmsg+0x2412/0x5280 [ 83.683156][ T8721] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 83.689472][ T8721] ? sock_has_perm+0x1ee/0x280 [ 83.694223][ T8721] ? selinux_socket_post_create+0x7d0/0x7d0 [ 83.700107][ T8721] ? tomoyo_socket_sendmsg_permission+0x130/0x3a0 [ 83.706506][ T8721] ? release_sock+0x1b/0x1b0 [ 83.711081][ T8721] ? tomoyo_socket_bind_permission+0x330/0x330 [ 83.717220][ T8721] ? packet_create+0xac0/0xac0 [ 83.721982][ T8721] ? find_held_lock+0x2d/0x110 [ 83.726734][ T8721] ? __sanitizer_cov_trace_const_cmp4+0x1c/0x70 [ 83.732966][ T8721] ? packet_create+0xac0/0xac0 [ 83.737758][ T8721] sock_sendmsg+0xcf/0x120 [ 83.742163][ T8721] __sys_sendto+0x21c/0x320 [ 83.746650][ T8721] ? __ia32_sys_getpeername+0xb0/0xb0 [ 83.752011][ T8721] ? lockdep_hardirqs_on_prepare+0x400/0x400 [ 83.757981][ T8721] ? __context_tracking_exit+0xb8/0xe0 [ 83.763436][ T8721] ? lock_downgrade+0x6e0/0x6e0 [ 83.768286][ T8721] ? lock_downgrade+0x6e0/0x6e0 [ 83.773121][ T8721] __x64_sys_sendto+0xdd/0x1b0 [ 83.777988][ T8721] ? lockdep_hardirqs_on+0x79/0x100 [ 83.783164][ T8721] ? syscall_enter_from_user_mode+0x27/0x70 [ 83.789041][ T8721] do_syscall_64+0x3a/0xb0 [ 83.793447][ T8721] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 83.799369][ T8721] RIP: 0033:0x443b19 [ 83.803250][ T8721] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 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 c0 ff ff ff f7 d8 64 89 01 48 [ 83.822847][ T8721] RSP: 002b:00007fff1cc44888 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 83.831453][ T8721] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000443b19 [ 83.839423][ T8721] RDX: 0000000000003287 RSI: 0000000020000080 RDI: 0000000000000003 [ 83.847405][ T8721] RBP: 0000000000000000 R08: 0000000000000000 R09: 00000000000002ff [ 83.855391][ T8721] R10: 0000000004000002 R11: 0000000000000246 R12: 00007fff1cc448b0 [ 83.863347][ T8721] R13: 00000000000f4240 R14: 0000000000014595 R15: 00007fff1cc448a4 [ 83.871346][ T8721] Modules linked in: [ 83.875375][ T8721] ---[ end trace 4ea0ac57b06c3762 ]--- [ 83.881032][ T8721] RIP: 0010:skb_checksum_help+0x4b4/0x5b0 [ 83.886888][ T8721] Code: fa 45 89 ec e9 59 ff ff ff e8 38 57 69 fa 48 89 ef 41 bc ea ff ff ff e8 2a f9 ff ff eb c7 e8 23 57 69 fa 0f 0b e8 1c 57 69 fa <0f> 0b 4c 89 f7 e8 62 df ad fa e9 79 fb ff ff e8 68 df ad fa e9 28 [ 83.906722][ T8721] RSP: 0018:ffffc9000211f0e8 EFLAGS: 00010293 [ 83.912855][ T8721] RAX: 0000000000000000 RBX: 00000000000003d2 RCX: 0000000000000000 [ 83.920876][ T8721] RDX: ffff8880147ac280 RSI: ffffffff870aba44 RDI: 0000000000000003 [ 83.928857][ T8721] RBP: ffff88803c9dbe00 R08: 00000000000003d4 R09: 0000000000000000 [ 83.936886][ T8721] R10: ffffffff870ab910 R11: 0000000000000000 R12: 00000000000000e0 [ 83.945129][ T8721] R13: 00000000000003d4 R14: ffff88803c9dbe80 R15: 00000000000003d2 [ 83.953359][ T8721] FS: 0000000000afc300(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000 [ 83.962703][ T8721] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 83.969285][ T8721] CR2: 0000000000000000 CR3: 000000003cbac000 CR4: 00000000001506e0 [ 83.977287][ T8721] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 83.985422][ T8721] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 83.993432][ T8721] Kernel panic - not syncing: Fatal exception in interrupt [ 84.001744][ T8721] Kernel Offset: disabled [ 84.006201][ T8721] Rebooting in 86400 seconds..