[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 97.156183] audit: type=1800 audit(1549908939.205:25): pid=10601 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 97.175305] audit: type=1800 audit(1549908939.215:26): pid=10601 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 97.194721] audit: type=1800 audit(1549908939.225:27): pid=10601 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 103.299089] sshd (10738) used greatest stack depth: 53632 bytes left Warning: Permanently added '10.128.0.193' (ECDSA) to the list of known hosts. [ 111.261399] IPVS: ftp: loaded support on port[0] = 21 [ 111.345094] chnl_net:caif_netlink_parms(): no params data found [ 111.391215] bridge0: port 1(bridge_slave_0) entered blocking state [ 111.397738] bridge0: port 1(bridge_slave_0) entered disabled state [ 111.405714] device bridge_slave_0 entered promiscuous mode [ 111.413947] bridge0: port 2(bridge_slave_1) entered blocking state [ 111.420377] bridge0: port 2(bridge_slave_1) entered disabled state [ 111.428391] device bridge_slave_1 entered promiscuous mode [ 111.451412] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 111.461523] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 111.484710] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 111.493283] team0: Port device team_slave_0 added [ 111.499449] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 111.507680] team0: Port device team_slave_1 added [ 111.513445] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 111.521258] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 111.585185] device hsr_slave_0 entered promiscuous mode [ 111.632237] device hsr_slave_1 entered promiscuous mode [ 111.672762] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 111.680018] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 111.700893] bridge0: port 2(bridge_slave_1) entered blocking state [ 111.707415] bridge0: port 2(bridge_slave_1) entered forwarding state [ 111.714628] bridge0: port 1(bridge_slave_0) entered blocking state [ 111.721113] bridge0: port 1(bridge_slave_0) entered forwarding state [ 111.780433] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 111.786848] 8021q: adding VLAN 0 to HW filter on device bond0 [ 111.797703] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 111.809131] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 111.818600] bridge0: port 1(bridge_slave_0) entered disabled state [ 111.826820] bridge0: port 2(bridge_slave_1) entered disabled state [ 111.835282] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 111.849354] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 111.855531] 8021q: adding VLAN 0 to HW filter on device team0 [ 111.867228] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 111.875349] bridge0: port 1(bridge_slave_0) entered blocking state [ 111.881918] bridge0: port 1(bridge_slave_0) entered forwarding state [ 111.895062] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 111.903304] bridge0: port 2(bridge_slave_1) entered blocking state [ 111.909809] bridge0: port 2(bridge_slave_1) entered forwarding state [ 111.937674] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 111.949752] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 111.964668] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 111.979116] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 111.993550] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 112.007801] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 112.014572] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 112.035596] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready executing program [ 112.053204] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 112.070592] ================================================================== [ 112.078009] BUG: KMSAN: uninit-value in hsr_register_frame_in+0x12c/0x200 [ 112.084939] CPU: 0 PID: 10753 Comm: syz-executor132 Not tainted 5.0.0-rc1+ #9 [ 112.092207] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 112.101579] Call Trace: [ 112.104174] dump_stack+0x173/0x1d0 [ 112.107803] kmsan_report+0x12e/0x2a0 [ 112.111602] __msan_warning+0x82/0xf0 [ 112.115408] hsr_register_frame_in+0x12c/0x200 [ 112.119991] hsr_forward_skb+0xd64/0x2e30 [ 112.124173] ? kmsan_get_shadow_origin_ptr+0x60/0x440 [ 112.129359] hsr_dev_xmit+0xf8/0x160 [ 112.133069] ? is_hsr_master+0xb0/0xb0 [ 112.136947] dev_hard_start_xmit+0x604/0xc40 [ 112.141374] __dev_queue_xmit+0x2e48/0x3b80 [ 112.145720] dev_queue_xmit+0x4b/0x60 [ 112.149514] ? __netdev_pick_tx+0x1260/0x1260 [ 112.154026] packet_sendmsg+0x79bb/0x9760 [ 112.158183] ? __msan_poison_alloca+0x1f0/0x2a0 [ 112.162862] ? kmsan_get_shadow_origin_ptr+0x60/0x440 [ 112.168047] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 112.173455] ? compat_packet_setsockopt+0x360/0x360 [ 112.178901] __sys_sendto+0x8c4/0xac0 [ 112.182734] ? kmsan_get_shadow_origin_ptr+0x60/0x440 [ 112.187932] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 112.193389] ? prepare_exit_to_usermode+0x114/0x420 [ 112.198452] ? kmsan_get_shadow_origin_ptr+0x60/0x440 [ 112.203666] __se_sys_sendto+0x107/0x130 [ 112.207777] __x64_sys_sendto+0x6e/0x90 [ 112.211763] do_syscall_64+0xbc/0xf0 [ 112.215515] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 112.220698] RIP: 0033:0x441869 [ 112.223886] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 0f 83 bb 10 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 112.242802] RSP: 002b:00007fffa42c7de8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 112.250520] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441869 [ 112.257802] RDX: 000000000000000e RSI: 00000000200000c0 RDI: 0000000000000003 [ 112.265066] RBP: 00000000004a8fb0 R08: 0000000000000000 R09: 0000000000000000 [ 112.272350] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402db0 [ 112.279641] R13: 0000000000402e40 R14: 0000000000000000 R15: 0000000000000000 [ 112.286924] [ 112.288536] Uninit was stored to memory at: [ 112.292854] kmsan_internal_chain_origin+0x134/0x230 [ 112.297961] __msan_chain_origin+0x70/0xe0 [ 112.302202] hsr_get_node+0xc94/0xe10 [ 112.306017] hsr_forward_skb+0x7e9/0x2e30 [ 112.310176] hsr_dev_xmit+0xf8/0x160 [ 112.313896] dev_hard_start_xmit+0x604/0xc40 [ 112.318299] __dev_queue_xmit+0x2e48/0x3b80 [ 112.322624] dev_queue_xmit+0x4b/0x60 [ 112.326430] packet_sendmsg+0x79bb/0x9760 [ 112.330567] __sys_sendto+0x8c4/0xac0 [ 112.334372] __se_sys_sendto+0x107/0x130 [ 112.338421] __x64_sys_sendto+0x6e/0x90 [ 112.342394] do_syscall_64+0xbc/0xf0 [ 112.346127] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 112.351296] [ 112.352938] Uninit was created at: [ 112.356485] kmsan_internal_poison_shadow+0x92/0x150 [ 112.361575] kmsan_kmalloc+0xa6/0x130 [ 112.365365] kmsan_slab_alloc+0xe/0x10 [ 112.369661] __kmalloc_node_track_caller+0xe9e/0xff0 [ 112.374782] __alloc_skb+0x309/0xa20 [ 112.378485] alloc_skb_with_frags+0x1c7/0xac0 [ 112.382971] sock_alloc_send_pskb+0xafd/0x10a0 [ 112.387541] packet_sendmsg+0x6881/0x9760 [ 112.391690] __sys_sendto+0x8c4/0xac0 [ 112.395490] __se_sys_sendto+0x107/0x130 [ 112.399555] __x64_sys_sendto+0x6e/0x90 [ 112.403520] do_syscall_64+0xbc/0xf0 [ 112.407221] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 112.412411] ================================================================== [ 112.419751] Disabling lock debugging due to kernel taint [ 112.425189] Kernel panic - not syncing: panic_on_warn set ... [ 112.431067] CPU: 0 PID: 10753 Comm: syz-executor132 Tainted: G B 5.0.0-rc1+ #9 [ 112.439724] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 112.449089] Call Trace: [ 112.451694] dump_stack+0x173/0x1d0 [ 112.455353] panic+0x3d1/0xb01 [ 112.458571] kmsan_report+0x293/0x2a0 [ 112.462401] __msan_warning+0x82/0xf0 [ 112.466222] hsr_register_frame_in+0x12c/0x200 [ 112.470806] hsr_forward_skb+0xd64/0x2e30 [ 112.474990] ? kmsan_get_shadow_origin_ptr+0x60/0x440 [ 112.480181] hsr_dev_xmit+0xf8/0x160 [ 112.483916] ? is_hsr_master+0xb0/0xb0 [ 112.487811] dev_hard_start_xmit+0x604/0xc40 [ 112.492249] __dev_queue_xmit+0x2e48/0x3b80 [ 112.496609] dev_queue_xmit+0x4b/0x60 [ 112.500400] ? __netdev_pick_tx+0x1260/0x1260 [ 112.504889] packet_sendmsg+0x79bb/0x9760 [ 112.509043] ? __msan_poison_alloca+0x1f0/0x2a0 [ 112.513717] ? kmsan_get_shadow_origin_ptr+0x60/0x440 [ 112.518901] ? __msan_metadata_ptr_for_load_8+0x10/0x20 [ 112.524313] ? compat_packet_setsockopt+0x360/0x360 [ 112.529319] __sys_sendto+0x8c4/0xac0 [ 112.533135] ? kmsan_get_shadow_origin_ptr+0x60/0x440 [ 112.538319] ? __msan_metadata_ptr_for_store_4+0x13/0x20 [ 112.543772] ? prepare_exit_to_usermode+0x114/0x420 [ 112.548778] ? kmsan_get_shadow_origin_ptr+0x60/0x440 [ 112.553967] __se_sys_sendto+0x107/0x130 [ 112.558032] __x64_sys_sendto+0x6e/0x90 [ 112.562030] do_syscall_64+0xbc/0xf0 [ 112.565753] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 112.570932] RIP: 0033:0x441869 [ 112.574113] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 0f 83 bb 10 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 112.593009] RSP: 002b:00007fffa42c7de8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 112.600711] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441869 [ 112.607971] RDX: 000000000000000e RSI: 00000000200000c0 RDI: 0000000000000003 [ 112.615229] RBP: 00000000004a8fb0 R08: 0000000000000000 R09: 0000000000000000 [ 112.622486] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402db0 [ 112.629851] R13: 0000000000402e40 R14: 0000000000000000 R15: 0000000000000000 [ 112.638153] Kernel Offset: disabled [ 112.641800] Rebooting in 86400 seconds..