[ OK ] Started Permit User Sessions. [ OK ] Found device /dev/ttyS0. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ OK ] Started System Logging Service. [ **] A start job is running for OpenBSD …Shell server (1min 20s / 2min 39s)[ ***] A start job is running for OpenBSD …Shell server (1min 20s / 2min 39s)[ *** ] A start job is running for OpenBSD …Shell server (1min 21s / 2min 39s)[ *** ] A start job is running for OpenBSD …Shell server (1min 22s / 2min 39s)[*** ] A start job is running for OpenBSD …Shell server (1min 23s / 2min 52s)[ OK ] Started OpenBSD Secure Shell server. [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ 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 '10.128.1.16' (ECDSA) to the list of known hosts. syzkaller login: [ 133.440999][ T8212] IPVS: ftp: loaded support on port[0] = 21 [ 133.590070][ T8212] chnl_net:caif_netlink_parms(): no params data found [ 133.680163][ T8212] bridge0: port 1(bridge_slave_0) entered blocking state [ 133.687783][ T8212] bridge0: port 1(bridge_slave_0) entered disabled state [ 133.697154][ T8212] device bridge_slave_0 entered promiscuous mode [ 133.707972][ T8212] bridge0: port 2(bridge_slave_1) entered blocking state [ 133.716030][ T8212] bridge0: port 2(bridge_slave_1) entered disabled state [ 133.725307][ T8212] device bridge_slave_1 entered promiscuous mode [ 133.760005][ T8212] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 133.773850][ T8212] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 133.806083][ T8212] team0: Port device team_slave_0 added [ 133.817486][ T8212] team0: Port device team_slave_1 added [ 133.846304][ T8212] batman_adv: batadv0: Adding interface: batadv_slave_0 [ 133.853468][ T8212] 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. [ 133.879773][ T8212] batman_adv: batadv0: Not using interface batadv_slave_0 (retrying later): interface not active [ 133.893228][ T8212] batman_adv: batadv0: Adding interface: batadv_slave_1 [ 133.900272][ T8212] 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. [ 133.926513][ T8212] batman_adv: batadv0: Not using interface batadv_slave_1 (retrying later): interface not active [ 133.967655][ T8212] device hsr_slave_0 entered promiscuous mode [ 133.975092][ T8212] device hsr_slave_1 entered promiscuous mode [ 134.145762][ T8212] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 134.161467][ T8212] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 134.178711][ T8212] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 134.195167][ T8212] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 134.281680][ T8212] bridge0: port 2(bridge_slave_1) entered blocking state [ 134.289010][ T8212] bridge0: port 2(bridge_slave_1) entered forwarding state [ 134.296903][ T8212] bridge0: port 1(bridge_slave_0) entered blocking state [ 134.304492][ T8212] bridge0: port 1(bridge_slave_0) entered forwarding state [ 134.445372][ T8212] 8021q: adding VLAN 0 to HW filter on device bond0 [ 134.475218][ T1983] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 134.488922][ T1983] bridge0: port 1(bridge_slave_0) entered disabled state [ 134.499326][ T1983] bridge0: port 2(bridge_slave_1) entered disabled state [ 134.518667][ T1983] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 134.536658][ T8212] 8021q: adding VLAN 0 to HW filter on device team0 [ 134.555370][ T1983] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 134.564303][ T1983] bridge0: port 1(bridge_slave_0) entered blocking state [ 134.571592][ T1983] bridge0: port 1(bridge_slave_0) entered forwarding state [ 134.589098][ T53] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready [ 134.598995][ T53] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 134.608537][ T53] bridge0: port 2(bridge_slave_1) entered blocking state [ 134.615990][ T53] bridge0: port 2(bridge_slave_1) entered forwarding state [ 134.634832][ T1983] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bond: link becomes ready [ 134.655289][ T53] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bond: link becomes ready [ 134.669599][ T1983] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_team: link becomes ready [ 134.681700][ T1983] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 134.693471][ T1983] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 134.709930][ T53] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_team: link becomes ready [ 134.720593][ T53] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 134.740955][ T1983] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_hsr: link becomes ready [ 134.750193][ T1983] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 134.767932][ T53] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_hsr: link becomes ready [ 134.777110][ T53] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 134.791827][ T8212] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 134.824108][ T53] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 134.831603][ T53] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 134.850708][ T8212] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 134.881975][ T1983] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_virt_wifi: link becomes ready [ 134.891357][ T1983] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 134.923477][ T1983] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_vlan: link becomes ready [ 134.933468][ T1983] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 134.945672][ T1983] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 134.954842][ T1983] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready [ 134.967188][ T8212] device veth0_vlan entered promiscuous mode [ 134.986663][ T8212] device veth1_vlan entered promiscuous mode [ 135.025219][ T53] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan0: link becomes ready [ 135.034034][ T53] IPv6: ADDRCONF(NETDEV_CHANGE): macvlan1: link becomes ready [ 135.042484][ T53] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_macvtap: link becomes ready [ 135.051582][ T53] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_macvtap: link becomes ready [ 135.067455][ T8212] device veth0_macvtap entered promiscuous mode [ 135.080297][ T8212] device veth1_macvtap entered promiscuous mode [ 135.112827][ T8212] batman_adv: batadv0: Interface activated: batadv_slave_0 [ 135.121226][ T1983] IPv6: ADDRCONF(NETDEV_CHANGE): macvtap0: link becomes ready [ 135.131043][ T1983] IPv6: ADDRCONF(NETDEV_CHANGE): macsec0: link becomes ready [ 135.140350][ T1983] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_0: link becomes ready [ 135.150041][ T1983] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_batadv: link becomes ready [ 135.170267][ T8212] batman_adv: batadv0: Interface activated: batadv_slave_1 [ 135.178000][ T53] IPv6: ADDRCONF(NETDEV_CHANGE): batadv_slave_1: link becomes ready [ 135.188628][ T53] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_batadv: link becomes ready [ 135.207169][ T8212] netdevsim netdevsim0 netdevsim0: set [1, 0] type 2 family 0 port 6081 - 0 [ 135.216353][ T8212] netdevsim netdevsim0 netdevsim1: set [1, 0] type 2 family 0 port 6081 - 0 [ 135.225301][ T8212] netdevsim netdevsim0 netdevsim2: set [1, 0] type 2 family 0 port 6081 - 0 [ 135.234266][ T8212] netdevsim netdevsim0 netdevsim3: set [1, 0] type 2 family 0 port 6081 - 0 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 [ 138.073098][ T8470] ===================================================== [ 138.080071][ T8470] BUG: KMSAN: kernel-infoleak in kmsan_copy_to_user+0x9c/0xb0 [ 138.087561][ T8470] CPU: 1 PID: 8470 Comm: syz-executor981 Not tainted 5.12.0-rc6-syzkaller #0 [ 138.096303][ T8470] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 138.106371][ T8470] Call Trace: [ 138.109640][ T8470] dump_stack+0x24c/0x2e0 [ 138.113970][ T8470] kmsan_report+0xfb/0x1e0 [ 138.118379][ T8470] kmsan_internal_check_memory+0x1f5/0x500 [ 138.124182][ T8470] kmsan_copy_to_user+0x9c/0xb0 [ 138.129019][ T8470] _copy_to_iter+0xf79/0x2bc0 [ 138.133701][ T8470] ? kmsan_get_metadata+0x116/0x180 [ 138.138887][ T8470] ? kmsan_set_origin_checked+0xa2/0x100 [ 138.144523][ T8470] ? kmsan_get_metadata+0x116/0x180 [ 138.149711][ T8470] simple_copy_to_iter+0xf6/0x150 [ 138.154761][ T8470] __skb_datagram_iter+0x2cb/0x1210 [ 138.159977][ T8470] ? skb_copy_datagram_iter+0x200/0x200 [ 138.165516][ T8470] skb_copy_datagram_iter+0xd8/0x200 [ 138.170824][ T8470] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 138.176648][ T8470] packet_recvmsg+0x764/0x2060 [ 138.181401][ T8470] ? packet_sendmsg+0x99d0/0x99d0 [ 138.186412][ T8470] ____sys_recvmsg+0x57f/0xd50 [ 138.191196][ T8470] ? import_iovec+0x223/0x240 [ 138.195859][ T8470] ? kmsan_get_metadata+0x116/0x180 [ 138.201058][ T8470] do_recvmmsg+0xa97/0x22d0 [ 138.205549][ T8470] ? kmsan_internal_unpoison_shadow+0x2f/0x40 [ 138.211602][ T8470] ? kmsan_internal_set_origin+0x82/0xc0 [ 138.217228][ T8470] ? __msan_poison_alloca+0xec/0x110 [ 138.222509][ T8470] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 138.228322][ T8470] ? __se_sys_recvmmsg+0xd6/0x410 [ 138.233352][ T8470] __se_sys_recvmmsg+0x24a/0x410 [ 138.238277][ T8470] __x64_sys_recvmmsg+0x62/0x80 [ 138.243127][ T8470] do_syscall_64+0x9f/0x140 [ 138.247766][ T8470] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 138.253688][ T8470] RIP: 0033:0x4438b9 [ 138.257737][ T8470] 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 [ 138.277611][ T8470] RSP: 002b:00007ffd2592bda8 EFLAGS: 00000246 ORIG_RAX: 000000000000012b [ 138.286012][ T8470] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004438b9 [ 138.293967][ T8470] RDX: 0000000000000003 RSI: 00000000200072c0 RDI: 0000000000000003 [ 138.301922][ T8470] RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000000d [ 138.309874][ T8470] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd2592bdc0 [ 138.317834][ T8470] R13: 00000000000f4240 R14: 00000000000219ca R15: 00007ffd2592bdb4 [ 138.325791][ T8470] [ 138.328104][ T8470] Uninit was stored to memory at: [ 138.333103][ T8470] kmsan_internal_chain_origin+0xad/0x130 [ 138.338836][ T8470] kmsan_memcpy_memmove_metadata+0x25e/0x2d0 [ 138.344803][ T8470] kmsan_memcpy_metadata+0xb/0x10 [ 138.349808][ T8470] __msan_memcpy+0x46/0x60 [ 138.354203][ T8470] pskb_expand_head+0x3d6/0x1e20 [ 138.359123][ T8470] batadv_skb_head_push+0x2cc/0x410 [ 138.364302][ T8470] batadv_send_skb_packet+0x1ed/0x970 [ 138.369656][ T8470] batadv_send_broadcast_skb+0x76/0x90 [ 138.375095][ T8470] batadv_iv_send_outstanding_bat_ogm_packet+0xb2d/0xef0 [ 138.382146][ T8470] process_one_work+0x1219/0x1fe0 [ 138.387158][ T8470] worker_thread+0x10ec/0x2340 [ 138.391921][ T8470] kthread+0x521/0x560 [ 138.395973][ T8470] ret_from_fork+0x1f/0x30 [ 138.400374][ T8470] [ 138.402673][ T8470] Uninit was created at: [ 138.406887][ T8470] kmsan_internal_poison_shadow+0x66/0xd0 [ 138.412611][ T8470] kmsan_slab_alloc+0x8e/0xe0 [ 138.417293][ T8470] __kmalloc_node_track_caller+0xa4f/0x1470 [ 138.423181][ T8470] __alloc_skb+0x4dd/0xe90 [ 138.427581][ T8470] __netdev_alloc_skb+0x45d/0x810 [ 138.432592][ T8470] batadv_iv_ogm_queue_add+0x1376/0x1c40 [ 138.438246][ T8470] batadv_iv_ogm_schedule+0x12cd/0x16b0 [ 138.443863][ T8470] batadv_iv_send_outstanding_bat_ogm_packet+0xd6e/0xef0 [ 138.450871][ T8470] process_one_work+0x1219/0x1fe0 [ 138.455897][ T8470] worker_thread+0x10ec/0x2340 [ 138.460667][ T8470] kthread+0x521/0x560 [ 138.464723][ T8470] ret_from_fork+0x1f/0x30 [ 138.469128][ T8470] [ 138.471442][ T8470] Bytes 52-53 of 146 are uninitialized [ 138.476963][ T8470] Memory access of size 146 starts at ffff888130248440 [ 138.483795][ T8470] Data copied to user address 0000000020000180 [ 138.489949][ T8470] ===================================================== [ 138.496868][ T8470] Disabling lock debugging due to kernel taint [ 138.503010][ T8470] Kernel panic - not syncing: panic_on_kmsan set ... [ 138.509661][ T8470] CPU: 1 PID: 8470 Comm: syz-executor981 Tainted: G B 5.12.0-rc6-syzkaller #0 [ 138.519807][ T8470] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 138.529855][ T8470] Call Trace: [ 138.533125][ T8470] dump_stack+0x24c/0x2e0 [ 138.537618][ T8470] panic+0x4c6/0xea7 [ 138.541517][ T8470] ? add_taint+0x17c/0x210 [ 138.545917][ T8470] ? __msan_metadata_ptr_for_store_1+0x13/0x20 [ 138.552068][ T8470] kmsan_report+0x1de/0x1e0 [ 138.556554][ T8470] kmsan_internal_check_memory+0x1f5/0x500 [ 138.562355][ T8470] kmsan_copy_to_user+0x9c/0xb0 [ 138.567219][ T8470] _copy_to_iter+0xf79/0x2bc0 [ 138.571879][ T8470] ? kmsan_get_metadata+0x116/0x180 [ 138.577076][ T8470] ? kmsan_set_origin_checked+0xa2/0x100 [ 138.582695][ T8470] ? kmsan_get_metadata+0x116/0x180 [ 138.587875][ T8470] simple_copy_to_iter+0xf6/0x150 [ 138.592889][ T8470] __skb_datagram_iter+0x2cb/0x1210 [ 138.598117][ T8470] ? skb_copy_datagram_iter+0x200/0x200 [ 138.603657][ T8470] skb_copy_datagram_iter+0xd8/0x200 [ 138.608946][ T8470] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 138.614952][ T8470] packet_recvmsg+0x764/0x2060 [ 138.619714][ T8470] ? packet_sendmsg+0x99d0/0x99d0 [ 138.624743][ T8470] ____sys_recvmsg+0x57f/0xd50 [ 138.629505][ T8470] ? import_iovec+0x223/0x240 [ 138.634174][ T8470] ? kmsan_get_metadata+0x116/0x180 [ 138.639383][ T8470] do_recvmmsg+0xa97/0x22d0 [ 138.643875][ T8470] ? kmsan_internal_unpoison_shadow+0x2f/0x40 [ 138.649927][ T8470] ? kmsan_internal_set_origin+0x82/0xc0 [ 138.655550][ T8470] ? __msan_poison_alloca+0xec/0x110 [ 138.660818][ T8470] ? kmsan_get_shadow_origin_ptr+0x84/0xb0 [ 138.666607][ T8470] ? __se_sys_recvmmsg+0xd6/0x410 [ 138.671617][ T8470] __se_sys_recvmmsg+0x24a/0x410 [ 138.676538][ T8470] __x64_sys_recvmmsg+0x62/0x80 [ 138.681373][ T8470] do_syscall_64+0x9f/0x140 [ 138.685857][ T8470] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 138.691775][ T8470] RIP: 0033:0x4438b9 [ 138.695649][ T8470] 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 [ 138.715260][ T8470] RSP: 002b:00007ffd2592bda8 EFLAGS: 00000246 ORIG_RAX: 000000000000012b [ 138.723680][ T8470] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004438b9 [ 138.731633][ T8470] RDX: 0000000000000003 RSI: 00000000200072c0 RDI: 0000000000000003 [ 138.739685][ T8470] RBP: 0000000000000000 R08: 0000000000000000 R09: 000000000000000d [ 138.747637][ T8470] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd2592bdc0 [ 138.755678][ T8470] R13: 00000000000f4240 R14: 00000000000219ca R15: 00007ffd2592bdb4 [ 138.764589][ T8470] Kernel Offset: disabled [ 138.768929][ T8470] Rebooting in 86400 seconds..