[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 62.916034][ T26] kauditd_printk_skb: 7 callbacks suppressed [ 62.916044][ T26] audit: type=1800 audit(1567857798.148:29): pid=9711 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 62.943125][ T26] audit: type=1800 audit(1567857798.148:30): pid=9711 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.106' (ECDSA) to the list of known hosts. 2019/09/07 12:03:53 parsed 1 programs 2019/09/07 12:03:54 executed programs: 0 syzkaller login: [ 99.761786][ T9879] IPVS: ftp: loaded support on port[0] = 21 [ 99.810471][ T9879] chnl_net:caif_netlink_parms(): no params data found [ 99.833081][ T9879] bridge0: port 1(bridge_slave_0) entered blocking state [ 99.840297][ T9879] bridge0: port 1(bridge_slave_0) entered disabled state [ 99.848087][ T9879] device bridge_slave_0 entered promiscuous mode [ 99.855332][ T9879] bridge0: port 2(bridge_slave_1) entered blocking state [ 99.862474][ T9879] bridge0: port 2(bridge_slave_1) entered disabled state [ 99.870017][ T9879] device bridge_slave_1 entered promiscuous mode [ 99.884039][ T9879] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 99.894627][ T9879] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 99.910544][ T9879] team0: Port device team_slave_0 added [ 99.917007][ T9879] team0: Port device team_slave_1 added [ 99.979954][ T9879] device hsr_slave_0 entered promiscuous mode [ 100.018093][ T9879] device hsr_slave_1 entered promiscuous mode [ 100.092913][ T9879] bridge0: port 2(bridge_slave_1) entered blocking state [ 100.100026][ T9879] bridge0: port 2(bridge_slave_1) entered forwarding state [ 100.107345][ T9879] bridge0: port 1(bridge_slave_0) entered blocking state [ 100.114460][ T9879] bridge0: port 1(bridge_slave_0) entered forwarding state [ 100.138896][ T9879] 8021q: adding VLAN 0 to HW filter on device bond0 [ 100.150009][ T3015] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 100.168719][ T3015] bridge0: port 1(bridge_slave_0) entered disabled state [ 100.176347][ T3015] bridge0: port 2(bridge_slave_1) entered disabled state [ 100.184302][ T3015] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 100.194119][ T9879] 8021q: adding VLAN 0 to HW filter on device team0 [ 100.203669][ T17] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 100.212420][ T17] bridge0: port 1(bridge_slave_0) entered blocking state [ 100.219513][ T17] bridge0: port 1(bridge_slave_0) entered forwarding state [ 100.238699][ T3015] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 100.247015][ T3015] bridge0: port 2(bridge_slave_1) entered blocking state [ 100.254101][ T3015] bridge0: port 2(bridge_slave_1) entered forwarding state [ 100.262084][ T3015] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 100.270687][ T3015] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 100.279156][ T3015] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 100.287369][ T3015] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 100.296047][ T3015] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 100.304479][ T9879] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 100.319989][ T9879] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 101.006592][T10030] netlink: 20 bytes leftover after parsing attributes in process `syz-executor.0'. [ 101.033786][T10035] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 101.041642][T10035] #PF: supervisor instruction fetch in kernel mode [ 101.048517][T10035] #PF: error_code(0x0010) - not-present page [ 101.054489][T10035] PGD 97b97067 P4D 97b97067 PUD 91b1d067 PMD 0 [ 101.060810][T10035] Oops: 0010 [#1] PREEMPT SMP KASAN [ 101.066150][T10035] CPU: 1 PID: 10035 Comm: syz-executor.0 Not tainted 5.3.0-rc7+ #0 [ 101.074234][T10035] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 101.084458][T10035] RIP: 0010:0x0 [ 101.087927][T10035] Code: Bad RIP value. [ 101.091988][T10035] RSP: 0018:ffff88808c5774d8 EFLAGS: 00010246 [ 101.098033][T10035] RAX: dffffc0000000000 RBX: ffffffff882a51a0 RCX: ffffffff85b40c56 [ 101.105987][T10035] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8880a84fa380 [ 101.114030][T10035] RBP: ffff88808c5775d0 R08: ffff88808f5de180 R09: ffff88808c577658 [ 101.122111][T10035] R10: ffffed10118aeed9 R11: ffff88808c5776cf R12: ffff8880a84fa380 [ 101.130072][T10035] R13: 0000000000000001 R14: ffff88808c5775a8 R15: ffffffff882a51a0 [ 101.139163][T10035] FS: 00007fb0f6bb9700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 101.148331][T10035] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 101.154904][T10035] CR2: ffffffffffffffd6 CR3: 000000009537b000 CR4: 00000000001406e0 [ 101.162856][T10035] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 101.170804][T10035] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 101.179019][T10035] Call Trace: [ 101.182297][T10035] tc_bind_tclass+0x13e/0x2f0 [ 101.186957][T10035] ? qdisc_class_hash_init+0x110/0x110 [ 101.192761][T10035] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 101.199040][T10035] ? ns_capable_common+0x93/0x100 [ 101.204070][T10035] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 101.209779][T10035] ? qdisc_match_from_root+0x18a/0x280 [ 101.215219][T10035] tc_ctl_tclass+0xadb/0xcd0 [ 101.219790][T10035] ? qdisc_tree_reduce_backlog+0x570/0x570 [ 101.225577][T10035] ? rtnetlink_rcv_msg+0x3d0/0xb00 [ 101.230679][T10035] ? rtnetlink_rcv_msg+0x1ea/0xb00 [ 101.235773][T10035] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 101.242004][T10035] ? qdisc_tree_reduce_backlog+0x570/0x570 [ 101.247802][T10035] rtnetlink_rcv_msg+0x463/0xb00 [ 101.252717][T10035] ? rtnetlink_put_metrics+0x580/0x580 [ 101.258154][T10035] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 101.263412][T10035] ? __copy_skb_header+0x250/0x550 [ 101.268500][T10035] netlink_rcv_skb+0x177/0x450 [ 101.273242][T10035] ? rtnetlink_put_metrics+0x580/0x580 [ 101.278675][T10035] ? netlink_ack+0xb30/0xb30 [ 101.283258][T10035] ? netlink_deliver_tap+0x254/0xbf0 [ 101.288535][T10035] rtnetlink_rcv+0x1d/0x30 [ 101.292927][T10035] netlink_unicast+0x531/0x710 [ 101.297667][T10035] ? netlink_attachskb+0x7c0/0x7c0 [ 101.302760][T10035] ? _copy_from_iter_full+0x25d/0x8a0 [ 101.308194][T10035] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 101.313889][T10035] ? __check_object_size+0x3d/0x437 [ 101.319065][T10035] netlink_sendmsg+0x8a5/0xd60 [ 101.323812][T10035] ? netlink_unicast+0x710/0x710 [ 101.328728][T10035] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 101.334250][T10035] ? apparmor_socket_sendmsg+0x2a/0x30 [ 101.339700][T10035] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 101.346042][T10035] ? security_socket_sendmsg+0x8d/0xc0 [ 101.351501][T10035] ? netlink_unicast+0x710/0x710 [ 101.356422][T10035] sock_sendmsg+0xd7/0x130 [ 101.360828][T10035] ___sys_sendmsg+0x803/0x920 [ 101.365577][T10035] ? copy_msghdr_from_user+0x440/0x440 [ 101.371033][T10035] ? __fget+0xa3/0x560 [ 101.375082][T10035] ? __fget+0x384/0x560 [ 101.379216][T10035] ? ksys_dup3+0x3e0/0x3e0 [ 101.383612][T10035] ? __might_fault+0xfb/0x1e0 [ 101.388276][T10035] ? __fget_light+0x1a9/0x230 [ 101.392948][T10035] ? __fdget+0x1b/0x20 [ 101.397693][T10035] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 101.403920][T10035] __sys_sendmsg+0x105/0x1d0 [ 101.408495][T10035] ? __sys_sendmsg_sock+0xd0/0xd0 [ 101.413500][T10035] ? __x64_sys_clock_gettime+0x16d/0x240 [ 101.419119][T10035] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 101.425167][T10035] __x64_sys_sendmsg+0x78/0xb0 [ 101.430004][T10035] do_syscall_64+0xfd/0x6a0 [ 101.434500][T10035] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 101.440368][T10035] RIP: 0033:0x4598e9 [ 101.444238][T10035] Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 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 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 101.463821][T10035] RSP: 002b:00007fb0f6bb8c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 101.472299][T10035] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004598e9 [ 101.480263][T10035] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 [ 101.488240][T10035] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 101.496206][T10035] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb0f6bb96d4 [ 101.504178][T10035] R13: 00000000004c77fb R14: 00000000004dd098 R15: 00000000ffffffff [ 101.512136][T10035] Modules linked in: [ 101.516019][T10035] CR2: 0000000000000000 [ 101.523159][T10035] ---[ end trace a17132cd6d7cd6fc ]--- [ 101.528871][T10035] RIP: 0010:0x0 [ 101.532351][T10035] Code: Bad RIP value. [ 101.536431][T10035] RSP: 0018:ffff88808c5774d8 EFLAGS: 00010246 [ 101.542622][T10035] RAX: dffffc0000000000 RBX: ffffffff882a51a0 RCX: ffffffff85b40c56 [ 101.550801][T10035] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8880a84fa380 [ 101.558888][T10035] RBP: ffff88808c5775d0 R08: ffff88808f5de180 R09: ffff88808c577658 [ 101.566864][T10035] R10: ffffed10118aeed9 R11: ffff88808c5776cf R12: ffff8880a84fa380 [ 101.574878][T10035] R13: 0000000000000001 R14: ffff88808c5775a8 R15: ffffffff882a51a0 [ 101.582904][T10035] FS: 00007fb0f6bb9700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 101.591962][T10035] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 101.598588][T10035] CR2: ffffffffffffffd6 CR3: 000000009537b000 CR4: 00000000001406e0 [ 101.606815][T10035] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 101.615175][T10035] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 101.623404][T10035] Kernel panic - not syncing: Fatal exception [ 101.631093][T10035] Kernel Offset: disabled [ 101.635425][T10035] Rebooting in 86400 seconds..