[....] 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. [ 67.853601][ T26] kauditd_printk_skb: 7 callbacks suppressed [ 67.853611][ T26] audit: type=1800 audit(1567778080.061:29): pid=9657 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 [ 67.887606][ T26] audit: type=1800 audit(1567778080.061:30): pid=9657 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 '10.128.0.160' (ECDSA) to the list of known hosts. 2019/09/06 13:54:51 parsed 1 programs 2019/09/06 13:54:52 executed programs: 0 syzkaller login: [ 80.527423][ T9827] IPVS: ftp: loaded support on port[0] = 21 [ 80.572298][ T9827] chnl_net:caif_netlink_parms(): no params data found [ 80.595059][ T9827] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.602138][ T9827] bridge0: port 1(bridge_slave_0) entered disabled state [ 80.609703][ T9827] device bridge_slave_0 entered promiscuous mode [ 80.616926][ T9827] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.624034][ T9827] bridge0: port 2(bridge_slave_1) entered disabled state [ 80.631455][ T9827] device bridge_slave_1 entered promiscuous mode [ 80.645524][ T9827] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 80.655598][ T9827] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 80.671476][ T9827] team0: Port device team_slave_0 added [ 80.678265][ T9827] team0: Port device team_slave_1 added [ 80.734736][ T9827] device hsr_slave_0 entered promiscuous mode [ 80.783329][ T9827] device hsr_slave_1 entered promiscuous mode [ 80.838317][ T9827] bridge0: port 2(bridge_slave_1) entered blocking state [ 80.845399][ T9827] bridge0: port 2(bridge_slave_1) entered forwarding state [ 80.852656][ T9827] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.859768][ T9827] bridge0: port 1(bridge_slave_0) entered forwarding state [ 80.883641][ T9827] 8021q: adding VLAN 0 to HW filter on device bond0 [ 80.895316][ T3591] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 80.903453][ T3591] bridge0: port 1(bridge_slave_0) entered disabled state [ 80.910923][ T3591] bridge0: port 2(bridge_slave_1) entered disabled state [ 80.918717][ T3591] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 80.928748][ T9827] 8021q: adding VLAN 0 to HW filter on device team0 [ 80.938323][ T2821] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 80.946694][ T2821] bridge0: port 1(bridge_slave_0) entered blocking state [ 80.953756][ T2821] bridge0: port 1(bridge_slave_0) entered forwarding state [ 80.971479][ T9827] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 80.981986][ T9827] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 80.994044][ T9829] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 81.002352][ T9829] bridge0: port 2(bridge_slave_1) entered blocking state [ 81.009478][ T9829] bridge0: port 2(bridge_slave_1) entered forwarding state [ 81.017315][ T9829] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 81.026003][ T9829] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 81.034260][ T9829] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 81.042423][ T9829] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 81.050754][ T9829] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 81.058794][ T9829] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 81.072022][ T9827] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 83.390521][T10279] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 83.398619][T10279] #PF: supervisor instruction fetch in kernel mode [ 83.405104][T10279] #PF: error_code(0x0010) - not-present page [ 83.411062][T10279] PGD a015f067 P4D a015f067 PUD a2038067 PMD 0 [ 83.417296][T10279] Oops: 0010 [#1] PREEMPT SMP KASAN [ 83.422481][T10279] CPU: 0 PID: 10279 Comm: syz-executor.0 Not tainted 5.3.0-rc7+ #0 [ 83.430348][T10279] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 83.440391][T10279] RIP: 0010:0x0 [ 83.443835][T10279] Code: Bad RIP value. [ 83.447876][T10279] RSP: 0018:ffff88808f9774d8 EFLAGS: 00010246 [ 83.453917][T10279] RAX: dffffc0000000000 RBX: ffffffff882a50e0 RCX: ffffffff85b3fc56 [ 83.461897][T10279] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff888091f49480 [ 83.469846][T10279] RBP: ffff88808f9775d0 R08: ffff88808f97c080 R09: ffff88808f977658 [ 83.477797][T10279] R10: ffffed1011f2eed9 R11: ffff88808f9776cf R12: ffff888091f49480 [ 83.485745][T10279] R13: 0000000000000001 R14: ffff88808f9775a8 R15: ffffffff882a50e0 [ 83.493736][T10279] FS: 00007f1e70b8a700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 83.502647][T10279] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 83.509206][T10279] CR2: ffffffffffffffd6 CR3: 00000000a3803000 CR4: 00000000001406f0 [ 83.517155][T10279] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 83.525100][T10279] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 83.533048][T10279] Call Trace: [ 83.536325][T10279] tc_bind_tclass+0x13e/0x2f0 [ 83.540977][T10279] ? qdisc_class_hash_init+0x110/0x110 [ 83.546413][T10279] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 83.552650][T10279] ? ns_capable_common+0x93/0x100 [ 83.557654][T10279] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 83.563355][T10279] ? qdisc_match_from_root+0x18a/0x280 [ 83.568798][T10279] tc_ctl_tclass+0xadb/0xcd0 [ 83.573451][T10279] ? qdisc_tree_reduce_backlog+0x570/0x570 [ 83.579233][T10279] ? rtnetlink_rcv_msg+0x3d0/0xb00 [ 83.584333][T10279] ? rtnetlink_rcv_msg+0x1ea/0xb00 [ 83.589425][T10279] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 83.595642][T10279] ? qdisc_tree_reduce_backlog+0x570/0x570 [ 83.601422][T10279] rtnetlink_rcv_msg+0x463/0xb00 [ 83.606336][T10279] ? rtnetlink_put_metrics+0x580/0x580 [ 83.611771][T10279] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 83.617031][T10279] ? __copy_skb_header+0x250/0x550 [ 83.622133][T10279] netlink_rcv_skb+0x177/0x450 [ 83.626885][T10279] ? rtnetlink_put_metrics+0x580/0x580 [ 83.632322][T10279] ? netlink_ack+0xb30/0xb30 [ 83.636888][T10279] ? netlink_deliver_tap+0x254/0xbf0 [ 83.642150][T10279] rtnetlink_rcv+0x1d/0x30 [ 83.646557][T10279] netlink_unicast+0x531/0x710 [ 83.651298][T10279] ? netlink_attachskb+0x7c0/0x7c0 [ 83.656383][T10279] ? _copy_from_iter_full+0x25d/0x8a0 [ 83.661730][T10279] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 83.667428][T10279] ? __check_object_size+0x3d/0x437 [ 83.672643][T10279] netlink_sendmsg+0x8a5/0xd60 [ 83.677384][T10279] ? netlink_unicast+0x710/0x710 [ 83.682302][T10279] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 83.687833][T10279] ? apparmor_socket_sendmsg+0x2a/0x30 [ 83.693279][T10279] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 83.699498][T10279] ? security_socket_sendmsg+0x8d/0xc0 [ 83.704931][T10279] ? netlink_unicast+0x710/0x710 [ 83.709845][T10279] sock_sendmsg+0xd7/0x130 [ 83.714248][T10279] ___sys_sendmsg+0x803/0x920 [ 83.718900][T10279] ? copy_msghdr_from_user+0x440/0x440 [ 83.724348][T10279] ? __fget+0xa3/0x560 [ 83.728394][T10279] ? __fget+0x384/0x560 [ 83.732526][T10279] ? ksys_dup3+0x3e0/0x3e0 [ 83.736925][T10279] ? __might_fault+0xfb/0x1e0 [ 83.741578][T10279] ? __fget_light+0x1a9/0x230 [ 83.746230][T10279] ? __fdget+0x1b/0x20 [ 83.750275][T10279] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 83.756496][T10279] __sys_sendmsg+0x105/0x1d0 [ 83.761079][T10279] ? __sys_sendmsg_sock+0xd0/0xd0 [ 83.766083][T10279] ? __x64_sys_clock_gettime+0x16d/0x240 [ 83.771691][T10279] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 83.777747][T10279] __x64_sys_sendmsg+0x78/0xb0 [ 83.782488][T10279] do_syscall_64+0xfd/0x6a0 [ 83.786968][T10279] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 83.792834][T10279] RIP: 0033:0x459879 [ 83.796715][T10279] 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 [ 83.816299][T10279] RSP: 002b:00007f1e70b89c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 83.824701][T10279] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000459879 [ 83.832650][T10279] RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000004 [ 83.840627][T10279] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 83.848573][T10279] R10: 0000000000000000 R11: 0000000000000246 R12: 00007f1e70b8a6d4 [ 83.856522][T10279] R13: 00000000004c77c2 R14: 00000000004dd018 R15: 00000000ffffffff [ 83.864475][T10279] Modules linked in: [ 83.868356][T10279] CR2: 0000000000000000 [ 83.874033][T10279] ---[ end trace 29658f2fd156c683 ]--- [ 83.879629][T10279] RIP: 0010:0x0 [ 83.883239][T10279] Code: Bad RIP value. [ 83.887292][T10279] RSP: 0018:ffff88808f9774d8 EFLAGS: 00010246 [ 83.893532][T10279] RAX: dffffc0000000000 RBX: ffffffff882a50e0 RCX: ffffffff85b3fc56 [ 83.901488][T10279] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff888091f49480 [ 83.909490][T10279] RBP: ffff88808f9775d0 R08: ffff88808f97c080 R09: ffff88808f977658 [ 83.917474][T10279] R10: ffffed1011f2eed9 R11: ffff88808f9776cf R12: ffff888091f49480 [ 83.925452][T10279] R13: 0000000000000001 R14: ffff88808f9775a8 R15: ffffffff882a50e0 [ 83.933617][T10279] FS: 00007f1e70b8a700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 83.942520][T10279] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 83.949105][T10279] CR2: ffffffffffffffd6 CR3: 00000000a3803000 CR4: 00000000001406f0 [ 83.957080][T10279] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 83.965055][T10279] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 83.973014][T10279] Kernel panic - not syncing: Fatal exception [ 83.979790][T10279] Kernel Offset: disabled [ 83.984106][T10279] Rebooting in 86400 seconds..