[ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Started System Logging Service. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.160' (ECDSA) to the list of known hosts. syzkaller login: [ 227.888627][ T8211] IPVS: ftp: loaded support on port[0] = 21 [ 228.056325][ T8211] chnl_net:caif_netlink_parms(): no params data found [ 228.147633][ T8211] bridge0: port 1(bridge_slave_0) entered blocking state [ 228.155506][ T8211] bridge0: port 1(bridge_slave_0) entered disabled state [ 228.165153][ T8211] device bridge_slave_0 entered promiscuous mode [ 228.177322][ T8211] bridge0: port 2(bridge_slave_1) entered blocking state [ 228.184895][ T8211] bridge0: port 2(bridge_slave_1) entered disabled state [ 228.194204][ T8211] device bridge_slave_1 entered promiscuous mode [ 228.229855][ T8211] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 228.244262][ T8211] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 228.279716][ T8211] team0: Port device team_slave_0 added [ 228.290390][ T8211] team0: Port device team_slave_1 added [ 228.323060][ T8211] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 228.330417][ T8211] 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. [ 228.357109][ T8211] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 228.370595][ T8211] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 228.378085][ T8211] 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. [ 228.405218][ T8211] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 228.452050][ T8211] device hsr_slave_0 entered promiscuous mode [ 228.460366][ T8211] device hsr_slave_1 entered promiscuous mode [ 228.647354][ T8211] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 228.660426][ T8211] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 228.679001][ T8211] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 228.695630][ T8211] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 228.786964][ T8211] bridge0: port 2(bridge_slave_1) entered blocking state [ 228.794206][ T8211] bridge0: port 2(bridge_slave_1) entered forwarding state [ 228.801704][ T8211] bridge0: port 1(bridge_slave_0) entered blocking state [ 228.809177][ T8211] bridge0: port 1(bridge_slave_0) entered forwarding state [ 228.890076][ T8211] 8021q: adding VLAN 0 to HW filter on device bond0 [ 228.911344][ T1978] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 228.924836][ T1978] bridge0: port 1(bridge_slave_0) entered disabled state [ 228.936498][ T1978] bridge0: port 2(bridge_slave_1) entered disabled state [ 228.946569][ T1978] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 228.965064][ T8211] 8021q: adding VLAN 0 to HW filter on device team0 [ 228.984397][ T3695] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 228.993417][ T3695] bridge0: port 1(bridge_slave_0) entered blocking state [ 229.000579][ T3695] bridge0: port 1(bridge_slave_0) entered forwarding state [ 229.026820][ T3695] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 229.037255][ T3695] bridge0: port 2(bridge_slave_1) entered blocking state [ 229.044781][ T3695] bridge0: port 2(bridge_slave_1) entered forwarding state [ 229.061667][ T8417] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 229.079272][ T3695] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 229.090658][ T3695] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 229.101497][ T3695] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 229.119692][ T3695] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 229.130618][ T3695] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 229.153057][ T8417] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 229.164506][ T8417] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 229.185203][ T8211] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 229.197229][ T8211] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 229.207665][ T8417] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 229.217451][ T8417] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 229.248677][ T3695] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 229.256410][ T3695] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 229.276992][ T8211] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 229.311383][ T8417] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 229.322437][ T8417] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 229.355687][ T3695] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 229.365594][ T3695] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 229.378381][ T3695] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 229.387596][ T3695] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 229.399630][ T8211] device veth0_vlan entered promiscuous mode [ 229.419894][ T8211] device veth1_vlan entered promiscuous mode [ 229.460092][ T3695] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 229.469356][ T3695] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 229.479397][ T3695] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 229.488729][ T3695] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 229.506322][ T8211] device veth0_macvtap entered promiscuous mode [ 229.519527][ T8211] device veth1_macvtap entered promiscuous mode [ 229.553211][ T8211] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 229.560701][ T3695] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 229.570229][ T3695] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 229.579429][ T3695] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 229.589476][ T3695] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 229.607714][ T8211] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 229.615584][ T3695] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 229.626957][ T3695] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 229.641879][ T8211] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 229.651543][ T8211] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 229.660566][ T8211] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 229.669530][ T8211] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 executing program executing program [ 230.071820][ T8426] ===================================================== [ 230.078835][ T8426] BUG: KMSAN: uninit-value in virtio_net_hdr_to_skb+0x1414/0x14f0 [ 230.086672][ T8426] CPU: 0 PID: 8426 Comm: syz-executor777 Not tainted 5.12.0-rc6-syzkaller #0 [ 230.095417][ T8426] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 230.105456][ T8426] Call Trace: [ 230.108739][ T8426] dump_stack+0x24c/0x2e0 [ 230.113070][ T8426] kmsan_report+0xfb/0x1e0 [ 230.117499][ T8426] __msan_warning+0x5c/0xa0 [ 230.121993][ T8426] virtio_net_hdr_to_skb+0x1414/0x14f0 [ 230.127490][ T8426] packet_sendmsg+0x85b8/0x99d0 [ 230.132337][ T8426] ? kmsan_get_metadata+0x116/0x180 [ 230.137553][ T8426] ? kmsan_internal_set_origin+0x85/0xc0 [ 230.143183][ T8426] ? calculate_sizes+0xb80/0x1ad0 [ 230.148200][ T8426] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 230.154039][ T8426] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 230.160111][ T8426] kernel_sendmsg+0x22c/0x2f0 [ 230.164812][ T8426] ? packet_getsockopt+0x1120/0x1120 [ 230.170115][ T8426] sock_no_sendpage+0x205/0x2b0 [ 230.174997][ T8426] kernel_sendpage+0x47a/0x590 [ 230.179762][ T8426] ? __receive_sock+0x7d0/0x7d0 [ 230.184625][ T8426] sock_sendpage+0x161/0x1a0 [ 230.189234][ T8426] pipe_to_sendpage+0x3e4/0x520 [ 230.194116][ T8426] ? sock_fasync+0x250/0x250 [ 230.199203][ T8426] __splice_from_pipe+0x5e3/0xff0 [ 230.204222][ T8426] ? generic_splice_sendpage+0x2c0/0x2c0 [ 230.209848][ T8426] generic_splice_sendpage+0x1d5/0x2c0 [ 230.215301][ T8426] ? iter_file_splice_write+0x1b20/0x1b20 [ 230.221012][ T8426] do_splice+0x23c3/0x2c10 [ 230.225419][ T8426] ? kmsan_get_metadata+0x116/0x180 [ 230.230609][ T8426] ? kmsan_internal_set_origin+0x85/0xc0 [ 230.236310][ T8426] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 230.242402][ T8426] ? __msan_instrument_asm_store+0x107/0x130 [ 230.248438][ T8426] ? __msan_get_context_state+0x9/0x20 [ 230.253892][ T8426] ? kmsan_get_metadata+0x116/0x180 [ 230.259106][ T8426] __se_sys_splice+0x8fa/0xb50 [ 230.263891][ T8426] __x64_sys_splice+0x6e/0x90 [ 230.268592][ T8426] do_syscall_64+0x9f/0x140 [ 230.273108][ T8426] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 230.279021][ T8426] RIP: 0033:0x449a39 [ 230.282921][ T8426] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 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 [ 230.302538][ T8426] RSP: 002b:00007f8ed790b2f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 [ 230.310971][ T8426] RAX: ffffffffffffffda RBX: 00000000004cf518 RCX: 0000000000449a39 [ 230.318951][ T8426] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003 [ 230.326932][ T8426] RBP: 00000000004cf510 R08: 000000000004ffe0 R09: 0000000000000000 [ 230.334908][ T8426] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004cf51c [ 230.342888][ T8426] R13: 000000000049e46c R14: 6d32cc5e8ead0600 R15: 0000000000022000 [ 230.350873][ T8426] [ 230.353194][ T8426] Uninit was created at: [ 230.357423][ T8426] kmsan_save_stack_with_flags+0x3c/0x90 [ 230.363079][ T8426] kmsan_alloc_page+0xd0/0x1e0 [ 230.367851][ T8426] __alloc_pages_nodemask+0x827/0xf90 [ 230.373238][ T8426] alloc_pages_current+0x7b6/0xb60 [ 230.378358][ T8426] allocate_slab+0x364/0x1260 [ 230.383132][ T8426] ___slab_alloc+0xd42/0x1930 [ 230.387820][ T8426] kmem_cache_alloc_trace+0xc53/0x1030 [ 230.393325][ T8426] ____ip_mc_inc_group+0x4d7/0x10b0 [ 230.398546][ T8426] ip_mc_up+0x1ec/0x410 [ 230.402731][ T8426] inetdev_event+0x2036/0x20e0 [ 230.407508][ T8426] raw_notifier_call_chain+0x123/0x290 [ 230.412984][ T8426] __dev_notify_flags+0x5ac/0xba0 [ 230.418034][ T8426] dev_change_flags+0x1f8/0x280 [ 230.422899][ T8426] do_setlink+0x17f6/0x7890 [ 230.427431][ T8426] rtnl_newlink+0x2fc4/0x3d80 [ 230.432122][ T8426] rtnetlink_rcv_msg+0x143b/0x18e0 [ 230.437258][ T8426] netlink_rcv_skb+0x6fa/0x810 [ 230.442035][ T8426] rtnetlink_rcv+0x50/0x60 [ 230.446466][ T8426] netlink_unicast+0x11d6/0x14a0 [ 230.451414][ T8426] netlink_sendmsg+0x1740/0x1840 [ 230.456379][ T8426] __sys_sendto+0x9ea/0xc60 [ 230.460889][ T8426] __se_sys_sendto+0x107/0x130 [ 230.465658][ T8426] __x64_sys_sendto+0x6e/0x90 [ 230.470341][ T8426] do_syscall_64+0x9f/0x140 [ 230.474850][ T8426] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 230.480762][ T8426] ===================================================== [ 230.487685][ T8426] Disabling lock debugging due to kernel taint executing program [ 230.594740][ T8429] ===================================================== [ 230.601689][ T8429] BUG: KMSAN: uninit-value in virtio_net_hdr_to_skb+0x1414/0x14f0 [ 230.609496][ T8429] CPU: 0 PID: 8429 Comm: syz-executor777 Tainted: G B 5.12.0-rc6-syzkaller #0 [ 230.619659][ T8429] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 230.629702][ T8429] Call Trace: [ 230.633003][ T8429] dump_stack+0x24c/0x2e0 [ 230.637360][ T8429] kmsan_report+0xfb/0x1e0 [ 230.641768][ T8429] __msan_warning+0x5c/0xa0 [ 230.646281][ T8429] virtio_net_hdr_to_skb+0x1414/0x14f0 [ 230.651766][ T8429] packet_sendmsg+0x85b8/0x99d0 [ 230.656625][ T8429] ? kmsan_get_metadata+0x116/0x180 [ 230.661832][ T8429] ? kmsan_internal_set_origin+0x85/0xc0 [ 230.667462][ T8429] ? calculate_sizes+0xb80/0x1ad0 [ 230.672506][ T8429] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 230.678303][ T8429] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 230.684363][ T8429] kernel_sendmsg+0x22c/0x2f0 [ 230.689031][ T8429] ? packet_getsockopt+0x1120/0x1120 [ 230.694324][ T8429] sock_no_sendpage+0x205/0x2b0 [ 230.699177][ T8429] kernel_sendpage+0x47a/0x590 [ 230.703936][ T8429] ? __receive_sock+0x7d0/0x7d0 [ 230.708793][ T8429] sock_sendpage+0x161/0x1a0 [ 230.713378][ T8429] pipe_to_sendpage+0x3e4/0x520 [ 230.718234][ T8429] ? sock_fasync+0x250/0x250 [ 230.722819][ T8429] __splice_from_pipe+0x5e3/0xff0 [ 230.727876][ T8429] ? generic_splice_sendpage+0x2c0/0x2c0 [ 230.733539][ T8429] generic_splice_sendpage+0x1d5/0x2c0 [ 230.739024][ T8429] ? iter_file_splice_write+0x1b20/0x1b20 [ 230.744752][ T8429] do_splice+0x23c3/0x2c10 [ 230.749191][ T8429] ? kmsan_get_metadata+0x116/0x180 [ 230.754406][ T8429] ? kmsan_internal_set_origin+0x85/0xc0 [ 230.760039][ T8429] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 230.766137][ T8429] ? __msan_instrument_asm_store+0x107/0x130 [ 230.772138][ T8429] ? __msan_get_context_state+0x9/0x20 [ 230.777616][ T8429] ? kmsan_get_metadata+0x116/0x180 [ 230.782832][ T8429] __se_sys_splice+0x8fa/0xb50 [ 230.787628][ T8429] __x64_sys_splice+0x6e/0x90 [ 230.792318][ T8429] do_syscall_64+0x9f/0x140 [ 230.796836][ T8429] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 230.802746][ T8429] RIP: 0033:0x449a39 [ 230.806656][ T8429] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 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 [ 230.826366][ T8429] RSP: 002b:00007f8ed790b2f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 [ 230.834814][ T8429] RAX: ffffffffffffffda RBX: 00000000004cf518 RCX: 0000000000449a39 [ 230.842809][ T8429] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003 [ 230.850784][ T8429] RBP: 00000000004cf510 R08: 000000000004ffe0 R09: 0000000000000000 [ 230.858767][ T8429] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004cf51c [ 230.866764][ T8429] R13: 000000000049e46c R14: 6d32cc5e8ead0600 R15: 0000000000022000 [ 230.874753][ T8429] [ 230.877075][ T8429] Uninit was created at: [ 230.881302][ T8429] kmsan_save_stack_with_flags+0x3c/0x90 [ 230.886970][ T8429] kmsan_alloc_page+0xd0/0x1e0 [ 230.891745][ T8429] __alloc_pages_nodemask+0x827/0xf90 [ 230.897134][ T8429] alloc_pages_current+0x7b6/0xb60 [ 230.902257][ T8429] allocate_slab+0x364/0x1260 [ 230.906947][ T8429] ___slab_alloc+0xd42/0x1930 [ 230.911633][ T8429] kmem_cache_alloc_trace+0xc53/0x1030 [ 230.917105][ T8429] ____ip_mc_inc_group+0x4d7/0x10b0 [ 230.922838][ T8429] ip_mc_up+0x1ec/0x410 [ 230.927016][ T8429] inetdev_event+0x2036/0x20e0 [ 230.931789][ T8429] raw_notifier_call_chain+0x123/0x290 [ 230.937265][ T8429] __dev_notify_flags+0x5ac/0xba0 [ 230.942324][ T8429] dev_change_flags+0x1f8/0x280 [ 230.947189][ T8429] do_setlink+0x17f6/0x7890 [ 230.951705][ T8429] rtnl_newlink+0x2fc4/0x3d80 [ 230.956396][ T8429] rtnetlink_rcv_msg+0x143b/0x18e0 [ 230.961523][ T8429] netlink_rcv_skb+0x6fa/0x810 [ 230.966299][ T8429] rtnetlink_rcv+0x50/0x60 [ 230.970729][ T8429] netlink_unicast+0x11d6/0x14a0 [ 230.975684][ T8429] netlink_sendmsg+0x1740/0x1840 [ 230.980632][ T8429] __sys_sendto+0x9ea/0xc60 [ 230.985144][ T8429] __se_sys_sendto+0x107/0x130 [ 230.989915][ T8429] __x64_sys_sendto+0x6e/0x90 [ 230.994600][ T8429] do_syscall_64+0x9f/0x140 [ 230.999115][ T8429] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 231.005026][ T8429] ===================================================== executing program executing program [ 231.314723][ T8435] ===================================================== [ 231.321702][ T8435] BUG: KMSAN: uninit-value in virtio_net_hdr_to_skb+0x1414/0x14f0 [ 231.329522][ T8435] CPU: 0 PID: 8435 Comm: syz-executor777 Tainted: G B 5.12.0-rc6-syzkaller #0 [ 231.339655][ T8435] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 231.349692][ T8435] Call Trace: [ 231.352972][ T8435] dump_stack+0x24c/0x2e0 [ 231.357307][ T8435] kmsan_report+0xfb/0x1e0 [ 231.361708][ T8435] __msan_warning+0x5c/0xa0 [ 231.366201][ T8435] virtio_net_hdr_to_skb+0x1414/0x14f0 [ 231.371666][ T8435] packet_sendmsg+0x85b8/0x99d0 [ 231.376511][ T8435] ? kmsan_get_metadata+0x116/0x180 [ 231.381704][ T8435] ? kmsan_internal_set_origin+0x85/0xc0 [ 231.387360][ T8435] ? calculate_sizes+0xb80/0x1ad0 [ 231.392399][ T8435] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 231.398242][ T8435] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 231.404341][ T8435] kernel_sendmsg+0x22c/0x2f0 [ 231.409020][ T8435] ? packet_getsockopt+0x1120/0x1120 [ 231.414294][ T8435] sock_no_sendpage+0x205/0x2b0 [ 231.419161][ T8435] kernel_sendpage+0x47a/0x590 [ 231.423912][ T8435] ? __receive_sock+0x7d0/0x7d0 [ 231.428768][ T8435] sock_sendpage+0x161/0x1a0 [ 231.433345][ T8435] pipe_to_sendpage+0x3e4/0x520 [ 231.438187][ T8435] ? sock_fasync+0x250/0x250 [ 231.442768][ T8435] __splice_from_pipe+0x5e3/0xff0 [ 231.447783][ T8435] ? generic_splice_sendpage+0x2c0/0x2c0 [ 231.453421][ T8435] generic_splice_sendpage+0x1d5/0x2c0 [ 231.458892][ T8435] ? iter_file_splice_write+0x1b20/0x1b20 [ 231.464610][ T8435] do_splice+0x23c3/0x2c10 [ 231.469058][ T8435] ? kmsan_get_metadata+0x116/0x180 [ 231.474260][ T8435] ? kmsan_internal_set_origin+0x85/0xc0 [ 231.479884][ T8435] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 231.485947][ T8435] ? __msan_instrument_asm_store+0x107/0x130 [ 231.491951][ T8435] ? __msan_get_context_state+0x9/0x20 [ 231.497423][ T8435] ? kmsan_get_metadata+0x116/0x180 [ 231.502643][ T8435] __se_sys_splice+0x8fa/0xb50 [ 231.507439][ T8435] __x64_sys_splice+0x6e/0x90 [ 231.512142][ T8435] do_syscall_64+0x9f/0x140 [ 231.516663][ T8435] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 231.522580][ T8435] RIP: 0033:0x449a39 [ 231.526480][ T8435] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 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 [ 231.546188][ T8435] RSP: 002b:00007f8ed790b2f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 [ 231.554637][ T8435] RAX: ffffffffffffffda RBX: 00000000004cf518 RCX: 0000000000449a39 [ 231.562617][ T8435] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003 [ 231.570596][ T8435] RBP: 00000000004cf510 R08: 000000000004ffe0 R09: 0000000000000000 [ 231.578577][ T8435] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004cf51c [ 231.586583][ T8435] R13: 000000000049e46c R14: 6d32cc5e8ead0600 R15: 0000000000022000 [ 231.594658][ T8435] [ 231.596996][ T8435] Uninit was created at: [ 231.601225][ T8435] kmsan_internal_poison_shadow+0x5c/0xf0 [ 231.606966][ T8435] kmsan_slab_alloc+0x8e/0xe0 [ 231.611652][ T8435] __kmalloc+0x387/0x550 [ 231.615903][ T8435] batadv_tvlv_container_ogm_append+0x22d/0x840 [ 231.622161][ T8435] batadv_iv_ogm_schedule+0x5cf/0x16b0 [ 231.627635][ T8435] batadv_iv_send_outstanding_bat_ogm_packet+0xd6e/0xef0 [ 231.634674][ T8435] process_one_work+0x1219/0x1fe0 [ 231.639727][ T8435] worker_thread+0x10ec/0x2340 [ 231.644504][ T8435] kthread+0x521/0x560 [ 231.648583][ T8435] ret_from_fork+0x1f/0x30 [ 231.653008][ T8435] ===================================================== executing program [ 231.768772][ T8438] ===================================================== [ 231.775723][ T8438] BUG: KMSAN: uninit-value in virtio_net_hdr_to_skb+0x1414/0x14f0 [ 231.783550][ T8438] CPU: 0 PID: 8438 Comm: syz-executor777 Tainted: G B 5.12.0-rc6-syzkaller #0 [ 231.793705][ T8438] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 231.803751][ T8438] Call Trace: [ 231.807027][ T8438] dump_stack+0x24c/0x2e0 [ 231.811360][ T8438] kmsan_report+0xfb/0x1e0 [ 231.815787][ T8438] __msan_warning+0x5c/0xa0 [ 231.820305][ T8438] virtio_net_hdr_to_skb+0x1414/0x14f0 [ 231.825786][ T8438] packet_sendmsg+0x85b8/0x99d0 [ 231.830646][ T8438] ? kmsan_get_metadata+0x116/0x180 [ 231.835857][ T8438] ? kmsan_internal_set_origin+0x85/0xc0 [ 231.841519][ T8438] ? calculate_sizes+0xb80/0x1ad0 [ 231.846542][ T8438] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 231.852375][ T8438] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 231.858469][ T8438] kernel_sendmsg+0x22c/0x2f0 [ 231.863139][ T8438] ? packet_getsockopt+0x1120/0x1120 [ 231.868445][ T8438] sock_no_sendpage+0x205/0x2b0 [ 231.873309][ T8438] kernel_sendpage+0x47a/0x590 [ 231.878100][ T8438] ? __receive_sock+0x7d0/0x7d0 [ 231.882948][ T8438] sock_sendpage+0x161/0x1a0 [ 231.887573][ T8438] pipe_to_sendpage+0x3e4/0x520 [ 231.892425][ T8438] ? sock_fasync+0x250/0x250 [ 231.897041][ T8438] __splice_from_pipe+0x5e3/0xff0 [ 231.902121][ T8438] ? generic_splice_sendpage+0x2c0/0x2c0 [ 231.907768][ T8438] generic_splice_sendpage+0x1d5/0x2c0 [ 231.913241][ T8438] ? iter_file_splice_write+0x1b20/0x1b20 [ 231.918952][ T8438] do_splice+0x23c3/0x2c10 [ 231.923363][ T8438] ? kmsan_get_metadata+0x116/0x180 [ 231.928590][ T8438] ? kmsan_internal_set_origin+0x85/0xc0 [ 231.934217][ T8438] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 231.940280][ T8438] ? __msan_instrument_asm_store+0x107/0x130 [ 231.946290][ T8438] ? __msan_get_context_state+0x9/0x20 [ 231.951767][ T8438] ? kmsan_get_metadata+0x116/0x180 [ 231.956997][ T8438] __se_sys_splice+0x8fa/0xb50 [ 231.961803][ T8438] __x64_sys_splice+0x6e/0x90 [ 231.966497][ T8438] do_syscall_64+0x9f/0x140 [ 231.971017][ T8438] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 231.976941][ T8438] RIP: 0033:0x449a39 [ 231.980858][ T8438] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 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 [ 232.000492][ T8438] RSP: 002b:00007f8ed790b2f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 [ 232.008924][ T8438] RAX: ffffffffffffffda RBX: 00000000004cf518 RCX: 0000000000449a39 [ 232.016908][ T8438] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003 [ 232.024893][ T8438] RBP: 00000000004cf510 R08: 000000000004ffe0 R09: 0000000000000000 [ 232.032879][ T8438] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004cf51c [ 232.040863][ T8438] R13: 000000000049e46c R14: 6d32cc5e8ead0600 R15: 0000000000022000 [ 232.048860][ T8438] [ 232.051180][ T8438] Uninit was created at: [ 232.055407][ T8438] kmsan_save_stack_with_flags+0x3c/0x90 [ 232.061067][ T8438] kmsan_alloc_page+0xd0/0x1e0 [ 232.065843][ T8438] __alloc_pages_nodemask+0x827/0xf90 [ 232.071235][ T8438] alloc_pages_current+0x7b6/0xb60 [ 232.076372][ T8438] allocate_slab+0x364/0x1260 [ 232.081066][ T8438] ___slab_alloc+0xd42/0x1930 [ 232.085757][ T8438] kmem_cache_alloc_trace+0xc53/0x1030 [ 232.091240][ T8438] ____ip_mc_inc_group+0x4d7/0x10b0 [ 232.096461][ T8438] ip_mc_up+0x1ec/0x410 [ 232.100633][ T8438] inetdev_event+0x2036/0x20e0 [ 232.105411][ T8438] raw_notifier_call_chain+0x123/0x290 [ 232.110893][ T8438] __dev_notify_flags+0x5ac/0xba0 [ 232.115936][ T8438] dev_change_flags+0x1f8/0x280 [ 232.120801][ T8438] do_setlink+0x17f6/0x7890 [ 232.125319][ T8438] rtnl_newlink+0x2fc4/0x3d80 [ 232.130016][ T8438] rtnetlink_rcv_msg+0x143b/0x18e0 [ 232.135153][ T8438] netlink_rcv_skb+0x6fa/0x810 [ 232.139945][ T8438] rtnetlink_rcv+0x50/0x60 [ 232.144377][ T8438] netlink_unicast+0x11d6/0x14a0 [ 232.149327][ T8438] netlink_sendmsg+0x1740/0x1840 [ 232.154272][ T8438] __sys_sendto+0x9ea/0xc60 [ 232.158805][ T8438] __se_sys_sendto+0x107/0x130 [ 232.163578][ T8438] __x64_sys_sendto+0x6e/0x90 executing program [ 232.168280][ T8438] do_syscall_64+0x9f/0x140 [ 232.172802][ T8438] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 232.178803][ T8438] ===================================================== executing program executing program executing program executing program executing program executing program executing program executing program [ 233.760717][ T8465] ===================================================== [ 233.767686][ T8465] BUG: KMSAN: uninit-value in virtio_net_hdr_to_skb+0x1414/0x14f0 [ 233.775653][ T8465] CPU: 0 PID: 8465 Comm: syz-executor777 Tainted: G B 5.12.0-rc6-syzkaller #0 [ 233.786238][ T8465] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 233.796295][ T8465] Call Trace: [ 233.799673][ T8465] dump_stack+0x24c/0x2e0 [ 233.804034][ T8465] kmsan_report+0xfb/0x1e0 [ 233.808456][ T8465] __msan_warning+0x5c/0xa0 [ 233.812975][ T8465] virtio_net_hdr_to_skb+0x1414/0x14f0 [ 233.818482][ T8465] packet_sendmsg+0x85b8/0x99d0 [ 233.823360][ T8465] ? kmsan_get_metadata+0x116/0x180 [ 233.828589][ T8465] ? kmsan_internal_set_origin+0x85/0xc0 [ 233.834233][ T8465] ? calculate_sizes+0xb80/0x1ad0 [ 233.839291][ T8465] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 233.845123][ T8465] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 233.851215][ T8465] kernel_sendmsg+0x22c/0x2f0 [ 233.855896][ T8465] ? packet_getsockopt+0x1120/0x1120 [ 233.861199][ T8465] sock_no_sendpage+0x205/0x2b0 [ 233.866075][ T8465] kernel_sendpage+0x47a/0x590 [ 233.870858][ T8465] ? __receive_sock+0x7d0/0x7d0 [ 233.875713][ T8465] sock_sendpage+0x161/0x1a0 [ 233.880374][ T8465] pipe_to_sendpage+0x3e4/0x520 [ 233.885229][ T8465] ? sock_fasync+0x250/0x250 [ 233.889814][ T8465] __splice_from_pipe+0x5e3/0xff0 [ 233.894830][ T8465] ? generic_splice_sendpage+0x2c0/0x2c0 [ 233.900454][ T8465] generic_splice_sendpage+0x1d5/0x2c0 [ 233.905914][ T8465] ? iter_file_splice_write+0x1b20/0x1b20 [ 233.911653][ T8465] do_splice+0x23c3/0x2c10 [ 233.916068][ T8465] ? kmsan_get_metadata+0x116/0x180 [ 233.921256][ T8465] ? kmsan_internal_set_origin+0x85/0xc0 [ 233.926903][ T8465] ? kmsan_internal_unpoison_shadow+0x42/0x70 [ 233.932982][ T8465] ? __msan_instrument_asm_store+0x107/0x130 [ 233.939012][ T8465] ? __msan_get_context_state+0x9/0x20 [ 233.944488][ T8465] ? kmsan_get_metadata+0x116/0x180 [ 233.949722][ T8465] __se_sys_splice+0x8fa/0xb50 [ 233.954514][ T8465] __x64_sys_splice+0x6e/0x90 [ 233.959224][ T8465] do_syscall_64+0x9f/0x140 [ 233.963763][ T8465] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 233.969680][ T8465] RIP: 0033:0x449a39 [ 233.973615][ T8465] Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 d1 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 [ 233.993240][ T8465] RSP: 002b:00007f8ed790b2f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000113 [ 234.001708][ T8465] RAX: ffffffffffffffda RBX: 00000000004cf518 RCX: 0000000000449a39 [ 234.009698][ T8465] RDX: 0000000000000005 RSI: 0000000000000000 RDI: 0000000000000003 [ 234.017683][ T8465] RBP: 00000000004cf510 R08: 000000000004ffe0 R09: 0000000000000000 [ 234.025693][ T8465] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004cf51c [ 234.033673][ T8465] R13: 000000000049e46c R14: 6d32cc5e8ead0600 R15: 0000000000022000 [ 234.041662][ T8465] [ 234.043985][ T8465] Uninit was created at: [ 234.048217][ T8465] kmsan_save_stack_with_flags+0x3c/0x90 [ 234.053880][ T8465] kmsan_alloc_page+0xd0/0x1e0 [ 234.058658][ T8465] __alloc_pages_nodemask+0x827/0xf90 [ 234.064045][ T8465] alloc_pages_current+0x7b6/0xb60 [ 234.069370][ T8465] allocate_slab+0x364/0x1260 [ 234.074062][ T8465] ___slab_alloc+0xd42/0x1930 [ 234.078754][ T8465] kmem_cache_alloc_trace+0xc53/0x1030 [ 234.084238][ T8465] ____ip_mc_inc_group+0x4d7/0x10b0 [ 234.089462][ T8465] ip_mc_up+0x1ec/0x410 [ 234.093641][ T8465] inetdev_event+0x2036/0x20e0 [ 234.098434][ T8465] raw_notifier_call_chain+0x123/0x290 [ 234.103917][ T8465] __dev_notify_flags+0x5ac/0xba0 [ 234.108959][ T8465] dev_change_flags+0x1f8/0x280 [ 234.113840][ T8465] do_setlink+0x17f6/0x7890 [ 234.118366][ T8465] rtnl_newlink+0x2fc4/0x3d80 [ 234.123056][ T8465] rtnetlink_rcv_msg+0x143b/0x18e0 [ 234.128447][ T8465] netlink_rcv_skb+0x6fa/0x810 [ 234.133244][ T8465] rtnetlink_rcv+0x50/0x60 [ 234.137683][ T8465] netlink_unicast+0x11d6/0x14a0 [ 234.142661][ T8465] netlink_sendmsg+0x1740/0x1840 [ 234.147631][ T8465] __sys_sendto+0x9ea/0xc60 [ 234.152157][ T8465] __se_sys_sendto+0x107/0x130 [ 234.156941][ T8465] __x64_sys_sendto+0x6e/0x90 executing program [ 234.161632][ T8465] do_syscall_64+0x9f/0x140 [ 234.166151][ T8465] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 234.172068][ T8465] ===================================================== 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