Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 68.511847][ T26] audit: type=1800 audit(1567823783.393:33): pid=10102 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 72.885901][ T26] kauditd_printk_skb: 1 callbacks suppressed [ 72.885915][ T26] audit: type=1400 audit(1567823787.763:35): avc: denied { map } for pid=10274 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.1.61' (ECDSA) to the list of known hosts. 2019/09/07 02:36:34 parsed 1 programs [ 79.129035][ T26] audit: type=1400 audit(1567823794.003:36): avc: denied { map } for pid=10286 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 79.198914][ T26] audit: type=1400 audit(1567823794.073:37): avc: denied { map } for pid=10286 comm="syz-execprog" path="/sys/kernel/debug/kcov" dev="debugfs" ino=16425 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:debugfs_t:s0 tclass=file permissive=1 2019/09/07 02:36:35 executed programs: 0 [ 80.645198][T10302] IPVS: ftp: loaded support on port[0] = 21 [ 80.697131][T10302] chnl_net:caif_netlink_parms(): no params data found [ 80.719177][T10302] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.726455][T10302] bridge0: port 1(bridge_slave_0) entered disabled state [ 80.734164][T10302] device bridge_slave_0 entered promiscuous mode [ 80.742523][T10302] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.749592][T10302] bridge0: port 2(bridge_slave_1) entered disabled state [ 80.757425][T10302] device bridge_slave_1 entered promiscuous mode [ 80.770889][T10302] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 80.781733][T10302] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 80.797522][T10302] team0: Port device team_slave_0 added [ 80.804433][T10302] team0: Port device team_slave_1 added [ 80.882783][T10302] device hsr_slave_0 entered promiscuous mode [ 80.951647][T10302] device hsr_slave_1 entered promiscuous mode [ 81.027417][T10302] bridge0: port 2(bridge_slave_1) entered blocking state [ 81.034781][T10302] bridge0: port 2(bridge_slave_1) entered forwarding state [ 81.042115][T10302] bridge0: port 1(bridge_slave_0) entered blocking state [ 81.049155][T10302] bridge0: port 1(bridge_slave_0) entered forwarding state [ 81.074679][T10302] 8021q: adding VLAN 0 to HW filter on device bond0 [ 81.085749][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 81.094328][ T5] bridge0: port 1(bridge_slave_0) entered disabled state [ 81.102188][ T5] bridge0: port 2(bridge_slave_1) entered disabled state [ 81.109925][ T5] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 81.119897][T10302] 8021q: adding VLAN 0 to HW filter on device team0 [ 81.129170][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 81.137779][ T22] bridge0: port 1(bridge_slave_0) entered blocking state [ 81.145098][ T22] bridge0: port 1(bridge_slave_0) entered forwarding state [ 81.162530][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 81.171106][ T22] bridge0: port 2(bridge_slave_1) entered blocking state [ 81.178485][ T22] bridge0: port 2(bridge_slave_1) entered forwarding state [ 81.187566][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 81.196145][ T22] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 81.206850][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 81.214631][ T3608] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 81.225301][T10304] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 81.234728][T10302] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 81.249450][T10302] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 81.277991][ T26] audit: type=1400 audit(1567823796.153:38): avc: denied { associate } for pid=10302 comm="syz-executor.0" name="syz0" scontext=unconfined_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=filesystem permissive=1 [ 81.597260][T10364] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 81.605103][T10364] #PF: supervisor instruction fetch in kernel mode [ 81.611593][T10364] #PF: error_code(0x0010) - not-present page [ 81.617564][T10364] PGD a4caf067 P4D a4caf067 PUD 8f2f0067 PMD 0 [ 81.623798][T10364] Oops: 0010 [#1] PREEMPT SMP KASAN [ 81.628988][T10364] CPU: 0 PID: 10364 Comm: syz-executor.0 Not tainted 5.3.0-rc7+ #0 [ 81.636971][T10364] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 81.647291][T10364] RIP: 0010:0x0 [ 81.650885][T10364] Code: Bad RIP value. [ 81.654937][T10364] RSP: 0018:ffff888099de74d8 EFLAGS: 00010246 [ 81.660983][T10364] RAX: dffffc0000000000 RBX: ffffffff882a51a0 RCX: ffffffff85b3fc56 [ 81.669088][T10364] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8880a0eb3540 [ 81.677049][T10364] RBP: ffff888099de75d0 R08: ffff8880a4a903c0 R09: ffff888099de7658 [ 81.685007][T10364] R10: ffffed10133bced9 R11: ffff888099de76cf R12: ffff8880a0eb3540 [ 81.693324][T10364] R13: 0000000000000001 R14: ffff888099de75a8 R15: ffffffff882a51a0 [ 81.701412][T10364] FS: 00007fcd7a15f700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 81.710409][T10364] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 81.717085][T10364] CR2: ffffffffffffffd6 CR3: 00000000a076e000 CR4: 00000000001406f0 [ 81.725058][T10364] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 81.733143][T10364] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 81.741157][T10364] Call Trace: [ 81.744445][T10364] tc_bind_tclass+0x13e/0x2f0 [ 81.749231][T10364] ? qdisc_class_hash_init+0x110/0x110 [ 81.754683][T10364] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 81.760916][T10364] ? ns_capable_common+0x93/0x100 [ 81.765937][T10364] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 81.771646][T10364] ? qdisc_match_from_root+0x18a/0x280 [ 81.777096][T10364] tc_ctl_tclass+0xadb/0xcd0 [ 81.782130][T10364] ? qdisc_tree_reduce_backlog+0x570/0x570 [ 81.788049][T10364] ? rtnetlink_rcv_msg+0x3d0/0xb00 [ 81.793253][T10364] ? rtnetlink_rcv_msg+0x1ea/0xb00 [ 81.798514][T10364] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 81.804862][T10364] ? qdisc_tree_reduce_backlog+0x570/0x570 [ 81.810806][T10364] rtnetlink_rcv_msg+0x463/0xb00 [ 81.815750][T10364] ? rtnetlink_put_metrics+0x580/0x580 [ 81.821322][T10364] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 81.826601][T10364] ? __copy_skb_header+0x250/0x550 [ 81.831704][T10364] netlink_rcv_skb+0x177/0x450 [ 81.836575][T10364] ? rtnetlink_put_metrics+0x580/0x580 [ 81.842022][T10364] ? netlink_ack+0xb30/0xb30 [ 81.846602][T10364] ? netlink_deliver_tap+0x254/0xbf0 [ 81.851876][T10364] rtnetlink_rcv+0x1d/0x30 [ 81.856285][T10364] netlink_unicast+0x531/0x710 [ 81.861105][T10364] ? netlink_attachskb+0x7c0/0x7c0 [ 81.866208][T10364] ? _copy_from_iter_full+0x25d/0x8a0 [ 81.871578][T10364] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 81.878457][T10364] netlink_sendmsg+0x8a5/0xd60 [ 81.883214][T10364] ? netlink_unicast+0x710/0x710 [ 81.888150][T10364] ? tomoyo_socket_sendmsg+0x26/0x30 [ 81.893546][T10364] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 81.899913][T10364] ? security_socket_sendmsg+0x8d/0xc0 [ 81.905481][T10364] ? netlink_unicast+0x710/0x710 [ 81.910411][T10364] sock_sendmsg+0xd7/0x130 [ 81.914818][T10364] ___sys_sendmsg+0x803/0x920 [ 81.919594][T10364] ? copy_msghdr_from_user+0x440/0x440 [ 81.925088][T10364] ? __fget+0xa3/0x560 [ 81.929147][T10364] ? __fget+0x384/0x560 [ 81.933301][T10364] ? ksys_dup3+0x3e0/0x3e0 [ 81.937752][T10364] ? __might_fault+0xfb/0x1e0 [ 81.942417][T10364] ? __fget_light+0x1a9/0x230 [ 81.947085][T10364] ? __fdget+0x1b/0x20 [ 81.951145][T10364] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 81.957381][T10364] __sys_sendmsg+0x105/0x1d0 [ 81.961966][T10364] ? __sys_sendmsg_sock+0xd0/0xd0 [ 81.966988][T10364] ? __x64_sys_clock_gettime+0x16d/0x240 [ 81.972652][T10364] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 81.978711][T10364] __x64_sys_sendmsg+0x78/0xb0 [ 81.983592][T10364] do_syscall_64+0xfd/0x6a0 [ 81.988267][T10364] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 81.994414][T10364] RIP: 0033:0x4598e9 [ 81.998617][T10364] 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 [ 82.018229][T10364] RSP: 002b:00007fcd7a15ec78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 82.026782][T10364] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004598e9 [ 82.034861][T10364] RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000004 [ 82.043128][T10364] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 82.051501][T10364] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fcd7a15f6d4 [ 82.059584][T10364] R13: 00000000004c77fb R14: 00000000004dd098 R15: 00000000ffffffff [ 82.067689][T10364] Modules linked in: [ 82.071681][T10364] CR2: 0000000000000000 [ 82.078952][T10364] ---[ end trace b53f3665889285ad ]--- [ 82.084495][T10364] RIP: 0010:0x0 [ 82.087963][T10364] Code: Bad RIP value. [ 82.092202][T10364] RSP: 0018:ffff888099de74d8 EFLAGS: 00010246 [ 82.098286][T10364] RAX: dffffc0000000000 RBX: ffffffff882a51a0 RCX: ffffffff85b3fc56 [ 82.106622][T10364] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff8880a0eb3540 [ 82.114673][T10364] RBP: ffff888099de75d0 R08: ffff8880a4a903c0 R09: ffff888099de7658 [ 82.122901][T10364] R10: ffffed10133bced9 R11: ffff888099de76cf R12: ffff8880a0eb3540 [ 82.131168][T10364] R13: 0000000000000001 R14: ffff888099de75a8 R15: ffffffff882a51a0 [ 82.139327][T10364] FS: 00007fcd7a15f700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 82.148775][T10364] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 82.156048][T10364] CR2: ffffffffffffffd6 CR3: 00000000a076e000 CR4: 00000000001406f0 [ 82.164108][T10364] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 82.172138][T10364] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 82.180289][T10364] Kernel panic - not syncing: Fatal exception [ 82.187960][T10364] Kernel Offset: disabled [ 82.192298][T10364] Rebooting in 86400 seconds..