[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 55.947886][ T26] audit: type=1800 audit(1567850690.490:25): pid=8586 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 55.990324][ T26] audit: type=1800 audit(1567850690.490:26): pid=8586 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 56.040154][ T26] audit: type=1800 audit(1567850690.490:27): pid=8586 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 '10.128.10.62' (ECDSA) to the list of known hosts. 2019/09/07 10:05:02 parsed 1 programs 2019/09/07 10:05:03 executed programs: 0 syzkaller login: [ 69.286594][ T8758] IPVS: ftp: loaded support on port[0] = 21 [ 69.349547][ T8758] chnl_net:caif_netlink_parms(): no params data found [ 69.378061][ T8758] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.386961][ T8758] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.394825][ T8758] device bridge_slave_0 entered promiscuous mode [ 69.402852][ T8758] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.409935][ T8758] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.417750][ T8758] device bridge_slave_1 entered promiscuous mode [ 69.435399][ T8758] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 69.445891][ T8758] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 69.465346][ T8758] team0: Port device team_slave_0 added [ 69.472376][ T8758] team0: Port device team_slave_1 added [ 69.522812][ T8758] device hsr_slave_0 entered promiscuous mode [ 69.590610][ T8758] device hsr_slave_1 entered promiscuous mode [ 69.648792][ T8758] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.655976][ T8758] bridge0: port 2(bridge_slave_1) entered forwarding state [ 69.663939][ T8758] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.671014][ T8758] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.706021][ T8758] 8021q: adding VLAN 0 to HW filter on device bond0 [ 69.716765][ T3009] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 69.726909][ T3009] bridge0: port 1(bridge_slave_0) entered disabled state [ 69.745688][ T3009] bridge0: port 2(bridge_slave_1) entered disabled state [ 69.754252][ T3009] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 69.766122][ T8758] 8021q: adding VLAN 0 to HW filter on device team0 [ 69.776850][ T8760] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 69.785734][ T8760] bridge0: port 1(bridge_slave_0) entered blocking state [ 69.792839][ T8760] bridge0: port 1(bridge_slave_0) entered forwarding state [ 69.811889][ T3009] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 69.820232][ T3009] bridge0: port 2(bridge_slave_1) entered blocking state [ 69.827324][ T3009] bridge0: port 2(bridge_slave_1) entered forwarding state [ 69.835915][ T3009] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 69.844607][ T3009] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 69.853594][ T3009] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 69.863171][ T8760] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 69.875441][ T8761] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 69.885788][ T8758] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 69.904488][ T8758] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 70.452043][ T8845] BUG: kernel NULL pointer dereference, address: 0000000000000000 [ 70.459876][ T8845] #PF: supervisor instruction fetch in kernel mode [ 70.466355][ T8845] #PF: error_code(0x0010) - not-present page [ 70.472322][ T8845] PGD 9a604067 P4D 9a604067 PUD a07bf067 PMD 0 [ 70.478544][ T8845] Oops: 0010 [#1] PREEMPT SMP KASAN [ 70.483716][ T8845] CPU: 1 PID: 8845 Comm: syz-executor.0 Not tainted 5.3.0-rc7+ #0 [ 70.491534][ T8845] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 70.501573][ T8845] RIP: 0010:0x0 [ 70.505018][ T8845] Code: Bad RIP value. [ 70.509062][ T8845] RSP: 0018:ffff8880997574d8 EFLAGS: 00010246 [ 70.515132][ T8845] RAX: dffffc0000000000 RBX: ffffffff884a7760 RCX: ffffffff85b57066 [ 70.523080][ T8845] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88808be0d680 [ 70.531039][ T8845] RBP: ffff8880997575d0 R08: ffff888099be8140 R09: ffff888099757658 [ 70.538984][ T8845] R10: ffffed10132eaed9 R11: ffff8880997576cf R12: ffff88808be0d680 [ 70.546928][ T8845] R13: 0000000000000001 R14: ffff8880997575a8 R15: ffffffff884a7760 [ 70.554878][ T8845] FS: 00007ff5840f2700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 70.563778][ T8845] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 70.570336][ T8845] CR2: ffffffffffffffd6 CR3: 00000000a2144000 CR4: 00000000001406e0 [ 70.578282][ T8845] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 70.586227][ T8845] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 70.594171][ T8845] Call Trace: [ 70.597455][ T8845] tc_bind_tclass+0x13e/0x2f0 [ 70.602111][ T8845] ? qdisc_class_hash_init+0x110/0x110 [ 70.607546][ T8845] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 70.613762][ T8845] ? ns_capable_common+0x93/0x100 [ 70.618768][ T8845] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 70.624462][ T8845] ? qdisc_match_from_root+0x18a/0x280 [ 70.629895][ T8845] tc_ctl_tclass+0xadb/0xcd0 [ 70.634516][ T8845] ? qdisc_tree_reduce_backlog+0x570/0x570 [ 70.640306][ T8845] ? rtnetlink_rcv_msg+0x3d0/0xb00 [ 70.645406][ T8845] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 70.651630][ T8845] ? qdisc_tree_reduce_backlog+0x570/0x570 [ 70.657417][ T8845] rtnetlink_rcv_msg+0x463/0xb00 [ 70.662333][ T8845] ? rtnetlink_put_metrics+0x580/0x580 [ 70.667772][ T8845] ? netlink_deliver_tap+0x22d/0xbf0 [ 70.673039][ T8845] ? find_held_lock+0x35/0x130 [ 70.677782][ T8845] netlink_rcv_skb+0x177/0x450 [ 70.682519][ T8845] ? rtnetlink_put_metrics+0x580/0x580 [ 70.687951][ T8845] ? netlink_ack+0xb30/0xb30 [ 70.692519][ T8845] ? __kasan_check_read+0x11/0x20 [ 70.697520][ T8845] ? netlink_deliver_tap+0x254/0xbf0 [ 70.702782][ T8845] rtnetlink_rcv+0x1d/0x30 [ 70.707192][ T8845] netlink_unicast+0x531/0x710 [ 70.711933][ T8845] ? netlink_attachskb+0x7c0/0x7c0 [ 70.717021][ T8845] ? _copy_from_iter_full+0x25d/0x8a0 [ 70.722369][ T8845] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 70.728062][ T8845] ? __check_object_size+0x3d/0x437 [ 70.733235][ T8845] netlink_sendmsg+0x8a5/0xd60 [ 70.737975][ T8845] ? netlink_unicast+0x710/0x710 [ 70.742889][ T8845] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 70.748408][ T8845] ? apparmor_socket_sendmsg+0x2a/0x30 [ 70.753838][ T8845] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 70.760069][ T8845] ? security_socket_sendmsg+0x8d/0xc0 [ 70.765500][ T8845] ? netlink_unicast+0x710/0x710 [ 70.770409][ T8845] sock_sendmsg+0xd7/0x130 [ 70.774801][ T8845] ___sys_sendmsg+0x803/0x920 [ 70.779461][ T8845] ? copy_msghdr_from_user+0x440/0x440 [ 70.784906][ T8845] ? __kasan_check_read+0x11/0x20 [ 70.789904][ T8845] ? __fget+0x384/0x560 [ 70.794043][ T8845] ? ksys_dup3+0x3e0/0x3e0 [ 70.798434][ T8845] ? __fget_light+0x1a9/0x230 [ 70.803081][ T8845] ? __fdget+0x1b/0x20 [ 70.807130][ T8845] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 70.813342][ T8845] __sys_sendmsg+0x105/0x1d0 [ 70.817903][ T8845] ? __sys_sendmsg_sock+0xd0/0xd0 [ 70.822906][ T8845] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 70.828336][ T8845] ? do_syscall_64+0x26/0x6a0 [ 70.832988][ T8845] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 70.839027][ T8845] ? do_syscall_64+0x26/0x6a0 [ 70.843678][ T8845] __x64_sys_sendmsg+0x78/0xb0 [ 70.848414][ T8845] do_syscall_64+0xfd/0x6a0 [ 70.852897][ T8845] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 70.858764][ T8845] RIP: 0033:0x4598e9 [ 70.862636][ T8845] 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 [ 70.882208][ T8845] RSP: 002b:00007ff5840f1c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 70.890589][ T8845] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004598e9 [ 70.898535][ T8845] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 [ 70.906486][ T8845] RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 [ 70.914430][ T8845] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ff5840f26d4 [ 70.922373][ T8845] R13: 00000000004c77fb R14: 00000000004dd098 R15: 00000000ffffffff [ 70.930320][ T8845] Modules linked in: [ 70.934200][ T8845] CR2: 0000000000000000 [ 70.940289][ T8845] ---[ end trace 05f82b54a6d03754 ]--- [ 70.945757][ T8845] RIP: 0010:0x0 [ 70.949207][ T8845] Code: Bad RIP value. [ 70.953665][ T8845] RSP: 0018:ffff8880997574d8 EFLAGS: 00010246 [ 70.959714][ T8845] RAX: dffffc0000000000 RBX: ffffffff884a7760 RCX: ffffffff85b57066 [ 70.967706][ T8845] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff88808be0d680 [ 70.975736][ T8845] RBP: ffff8880997575d0 R08: ffff888099be8140 R09: ffff888099757658 [ 70.983728][ T8845] R10: ffffed10132eaed9 R11: ffff8880997576cf R12: ffff88808be0d680 [ 70.991738][ T8845] R13: 0000000000000001 R14: ffff8880997575a8 R15: ffffffff884a7760 [ 70.999693][ T8845] FS: 00007ff5840f2700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 71.008650][ T8845] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 71.015296][ T8845] CR2: ffffffffffffffd6 CR3: 00000000a2144000 CR4: 00000000001406e0 [ 71.023277][ T8845] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 71.031261][ T8845] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 71.039215][ T8845] Kernel panic - not syncing: Fatal exception [ 71.046498][ T8845] Kernel Offset: disabled [ 71.050819][ T8845] Rebooting in 86400 seconds..