[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 58.613948] audit: type=1800 audit(1539288941.667:25): pid=6150 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 58.633334] audit: type=1800 audit(1539288941.677:26): pid=6150 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 58.653004] audit: type=1800 audit(1539288941.697:27): pid=6150 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 Warning: Permanently added '10.128.0.66' (ECDSA) to the list of known hosts. syzkaller login: [ 90.037180] IPVS: ftp: loaded support on port[0] = 21 net.ipv6.conf.syz_tun.accept_dad = 0 net.ipv6.conf.syz_tun.router_solicitations = 0 [ 90.597979] bridge0: port 1(bridge_slave_0) entered blocking state [ 90.604581] bridge0: port 1(bridge_slave_0) entered disabled state [ 90.613162] device bridge_slave_0 entered promiscuous mode [ 90.653598] bridge0: port 2(bridge_slave_1) entered blocking state [ 90.660073] bridge0: port 2(bridge_slave_1) entered disabled state [ 90.668704] device bridge_slave_1 entered promiscuous mode [ 90.708070] IPv6: ADDRCONF(NETDEV_UP): veth0_to_bridge: link is not ready [ 90.747105] IPv6: ADDRCONF(NETDEV_UP): veth1_to_bridge: link is not ready [ 90.860952] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 90.903881] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 91.091134] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 91.098857] team0: Port device team_slave_0 added [ 91.138993] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 91.146946] team0: Port device team_slave_1 added [ 91.186322] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 91.231151] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 91.275549] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_to_bridge: link becomes ready [ 91.318922] IPv6: ADDRCONF(NETDEV_CHANGE): veth1_to_bridge: link becomes ready RTNETLINK answers: Operation not supported [ 91.717684] bridge0: port 2(bridge_slave_1) entered blocking state [ 91.724264] bridge0: port 2(bridge_slave_1) entered forwarding state [ 91.731075] bridge0: port 1(bridge_slave_0) entered blocking state [ 91.737745] bridge0: port 1(bridge_slave_0) entered forwarding state [ 91.746079] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready RTNETLINK answers: No buffer space available RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Operation not supported RTNETLINK answers: Invalid argument [ 92.502073] IPv6: ADDRCONF(NETDEV_CHANGE): bridge0: link becomes ready RTNETLINK answers: Invalid argument RTNETLINK answers: Invalid argument [ 93.092477] 8021q: adding VLAN 0 to HW filter on device bond0 [ 93.217046] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 93.342813] IPv6: ADDRCONF(NETDEV_UP): veth1: link is not ready [ 93.349036] IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready [ 93.357110] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 93.477142] 8021q: adding VLAN 0 to HW filter on device team0 executing program [ 94.217115] kauditd_printk_skb: 3 callbacks suppressed [ 94.217147] audit: type=1804 audit(1539288977.267:31): pid=6558 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=invalid_pcr cause=open_writers comm="syz-executor124" name="/root/bus" dev="sda1" ino=16482 res=1 [ 94.707154] Not allocated shadow for addr ffff8801a1ce3096 (page ffffea0009cad520) [ 94.714880] Attempted to access 8 bytes [ 94.718867] ------------[ cut here ]------------ [ 94.723613] kernel BUG at mm/kmsan/kmsan.c:1091! [ 94.728373] invalid opcode: 0000 [#1] SMP [ 94.732518] CPU: 0 PID: 6559 Comm: syz-executor124 Not tainted 4.19.0-rc7+ #68 [ 94.739865] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 94.749224] RIP: 0010:kmsan_get_shadow_address+0x2d6/0x3d0 [ 94.754845] Code: e9 89 00 00 00 c7 04 25 20 73 28 8c 01 00 00 00 65 48 8b 04 25 00 fd 02 00 c6 80 7b 09 00 00 01 80 3c 25 38 73 28 8c 00 74 0c <0f> 0b 0f 1f 84 00 00 00 00 00 eb fe 48 c7 c7 9c bd 57 8b 31 c0 4c [ 94.773755] RSP: 0018:ffff8801a1d0f2a0 EFLAGS: 00010046 [ 94.779122] RAX: 000000000000001b RBX: 0000000000000000 RCX: c6812d92a6c1a100 [ 94.786411] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000000 [ 94.793682] RBP: ffff8801a1d0f2d0 R08: 0000000000000000 R09: ffff88021fc38f50 [ 94.800961] R10: 0000000000000000 R11: ffffffff862609d0 R12: 0000000000000000 [ 94.808227] R13: ffff8801a1ce3096 R14: 0000000000000001 R15: ffff8801b64a5fe4 [ 94.815494] FS: 00007f0b28b24700(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000 [ 94.823712] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 94.829586] CR2: 0000000020002000 CR3: 000000000b82f000 CR4: 00000000001406f0 [ 94.836844] Call Trace: [ 94.839436] __msan_memcpy+0xa3/0x150 [ 94.843240] tls_push_record+0x803/0x1fb0 [ 94.847415] tls_sw_push_pending_record+0x6e/0x80 [ 94.852254] ? tls_set_sw_offload+0x1ac0/0x1ac0 [ 94.856924] tls_sk_proto_close+0x39e/0x1120 [ 94.861348] ? tcp_check_oom+0x650/0x650 [ 94.865423] ? tls_getsockopt+0x8a0/0x8a0 [ 94.869567] inet_release+0x24f/0x2c0 [ 94.873411] inet6_release+0xaf/0x100 [ 94.877239] ? __inet6_bind+0x1af0/0x1af0 [ 94.881383] sock_close+0x13f/0x400 [ 94.885014] ? sock_mmap+0x130/0x130 [ 94.888724] __fput+0x4e8/0xda0 [ 94.892012] ____fput+0x37/0x40 [ 94.895283] ? fput+0x3e0/0x3e0 [ 94.898564] task_work_run+0x467/0x500 [ 94.902470] do_exit+0x15c1/0x3f80 [ 94.906017] ? trace_raw_output_signal_deliver+0x321/0x360 [ 94.911707] do_group_exit+0x1a0/0x350 [ 94.915623] get_signal+0x1693/0x2390 [ 94.919451] ? __msan_poison_alloca+0x17a/0x210 [ 94.924134] ? do_signal+0x1d6/0x2da0 [ 94.927930] ? prepare_exit_to_usermode+0x293/0x470 [ 94.932946] do_signal+0x1ed/0x2da0 [ 94.936590] ? kmsan_set_origin_inline+0x6b/0x120 [ 94.941466] prepare_exit_to_usermode+0x293/0x470 [ 94.946314] syscall_return_slowpath+0x112/0x880 [ 94.951069] ? fput+0x346/0x3e0 [ 94.954369] do_syscall_64+0xe4/0x100 [ 94.958171] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 94.963352] RIP: 0033:0x446e79 [ 94.966543] Code: Bad RIP value. [ 94.969901] RSP: 002b:00007f0b28b23da8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca [ 94.977607] RAX: fffffffffffffe00 RBX: 00000000006dcc58 RCX: 0000000000446e79 [ 94.984869] RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00000000006dcc58 [ 94.992133] RBP: 00000000006dcc50 R08: 0000000000000000 R09: 0000000000000000 [ 94.999398] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dcc5c [ 95.006663] R13: 4000000000000001 R14: 00007f0b28b249c0 R15: 0000000000000001 [ 95.013935] Modules linked in: [ 95.017154] ---[ end trace 8f6c30d058770501 ]--- [ 95.021915] RIP: 0010:kmsan_get_shadow_address+0x2d6/0x3d0 [ 95.027535] Code: e9 89 00 00 00 c7 04 25 20 73 28 8c 01 00 00 00 65 48 8b 04 25 00 fd 02 00 c6 80 7b 09 00 00 01 80 3c 25 38 73 28 8c 00 74 0c <0f> 0b 0f 1f 84 00 00 00 00 00 eb fe 48 c7 c7 9c bd 57 8b 31 c0 4c [ 95.046432] RSP: 0018:ffff8801a1d0f2a0 EFLAGS: 00010046 [ 95.051793] RAX: 000000000000001b RBX: 0000000000000000 RCX: c6812d92a6c1a100 [ 95.059317] RDX: 0000000000000000 RSI: 0000000000000008 RDI: 0000000000000000 [ 95.066582] RBP: ffff8801a1d0f2d0 R08: 0000000000000000 R09: ffff88021fc38f50 [ 95.073847] R10: 0000000000000000 R11: ffffffff862609d0 R12: 0000000000000000 [ 95.081114] R13: ffff8801a1ce3096 R14: 0000000000000001 R15: ffff8801b64a5fe4 [ 95.088379] FS: 00007f0b28b24700(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000 [ 95.096605] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 95.102480] CR2: 0000000000446e4f CR3: 000000000b82f000 CR4: 00000000001406f0 [ 95.109745] Kernel panic - not syncing: Fatal exception [ 95.116012] Kernel Offset: disabled [ 95.119652] Rebooting in 86400 seconds..