[....] 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. [ 64.494128][ T26] kauditd_printk_skb: 7 callbacks suppressed [ 64.494138][ T26] audit: type=1800 audit(1567824310.540:29): pid=9644 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 [ 64.531274][ T26] audit: type=1800 audit(1567824310.540:30): pid=9644 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 '10.128.0.98' (ECDSA) to the list of known hosts. syzkaller login: [ 92.706972][ T9800] IPVS: ftp: loaded support on port[0] = 21 [ 92.748273][ T9800] chnl_net:caif_netlink_parms(): no params data found [ 92.769640][ T9800] bridge0: port 1(bridge_slave_0) entered blocking state [ 92.777001][ T9800] bridge0: port 1(bridge_slave_0) entered disabled state [ 92.784659][ T9800] device bridge_slave_0 entered promiscuous mode [ 92.792005][ T9800] bridge0: port 2(bridge_slave_1) entered blocking state [ 92.799281][ T9800] bridge0: port 2(bridge_slave_1) entered disabled state [ 92.806790][ T9800] device bridge_slave_1 entered promiscuous mode [ 92.820508][ T9800] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 92.831035][ T9800] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 92.847021][ T9800] team0: Port device team_slave_0 added [ 92.853579][ T9800] team0: Port device team_slave_1 added [ 92.926780][ T9800] device hsr_slave_0 entered promiscuous mode [ 92.965423][ T9800] device hsr_slave_1 entered promiscuous mode [ 93.041493][ T9800] bridge0: port 2(bridge_slave_1) entered blocking state [ 93.048601][ T9800] bridge0: port 2(bridge_slave_1) entered forwarding state [ 93.056005][ T9800] bridge0: port 1(bridge_slave_0) entered blocking state [ 93.063299][ T9800] bridge0: port 1(bridge_slave_0) entered forwarding state [ 93.086812][ T9800] 8021q: adding VLAN 0 to HW filter on device bond0 [ 93.097388][ T9802] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 93.116438][ T9802] bridge0: port 1(bridge_slave_0) entered disabled state [ 93.124232][ T9802] bridge0: port 2(bridge_slave_1) entered disabled state [ 93.132363][ T9802] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 93.142018][ T9800] 8021q: adding VLAN 0 to HW filter on device team0 [ 93.151962][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 93.160557][ T12] bridge0: port 1(bridge_slave_0) entered blocking state [ 93.167637][ T12] bridge0: port 1(bridge_slave_0) entered forwarding state [ 93.185811][ T9802] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 93.194455][ T9802] bridge0: port 2(bridge_slave_1) entered blocking state [ 93.201603][ T9802] bridge0: port 2(bridge_slave_1) entered forwarding state [ 93.209511][ T9802] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 93.218023][ T9802] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 93.226705][ T9802] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready executing program [ 93.235754][ T9802] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 93.246258][ T12] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 93.256329][ T9800] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 93.271034][ T9800] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 93.297834][ T9800] netlink: 24 bytes leftover after parsing attributes in process `syz-executor483'. [ 93.307649][ T9800] kasan: CONFIG_KASAN_INLINE enabled [ 93.312927][ T9800] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 93.321558][ T9800] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 93.328506][ T9800] CPU: 0 PID: 9800 Comm: syz-executor483 Not tainted 5.3.0-rc7+ #0 [ 93.336374][ T9800] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 93.346540][ T9800] RIP: 0010:__list_del_entry_valid+0x85/0xf5 [ 93.352509][ T9800] Code: 0f 84 e1 00 00 00 48 b8 22 01 00 00 00 00 ad de 49 39 c4 0f 84 e2 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 75 53 49 8b 14 24 4c 39 f2 0f 85 99 00 00 00 49 8d 7d [ 93.372242][ T9800] RSP: 0018:ffff888092f2f450 EFLAGS: 00010246 [ 93.378325][ T9800] RAX: dffffc0000000000 RBX: ffff888099b93b40 RCX: ffffffff8159b24a [ 93.386282][ T9800] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888099b93ea8 [ 93.394239][ T9800] RBP: ffff888092f2f468 R08: 0000000000000004 R09: ffffed10125e5e7d [ 93.402316][ T9800] R10: ffffed10125e5e7c R11: 0000000000000003 R12: 0000000000000000 [ 93.410573][ T9800] R13: 0000000000000000 R14: ffff888099b93ea0 R15: ffff888099b93e00 [ 93.418546][ T9800] FS: 00005555562ac880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 93.427507][ T9800] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 93.434080][ T9800] CR2: 0000000020000610 CR3: 000000009f996000 CR4: 00000000001406f0 [ 93.442045][ T9800] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 93.450007][ T9800] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 93.457981][ T9800] Call Trace: [ 93.461253][ T9800] cbs_destroy+0x7d/0x2a0 [ 93.465573][ T9800] ? cbs_init+0x25d/0x450 [ 93.469878][ T9800] ? cbs_dequeue_soft+0x410/0x410 [ 93.474878][ T9800] qdisc_create+0xbc6/0x1210 [ 93.479445][ T9800] ? tc_get_qdisc+0xc10/0xc10 [ 93.484199][ T9800] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 93.490441][ T9800] ? qdisc_match_from_root+0x18a/0x280 [ 93.495895][ T9800] tc_modify_qdisc+0x524/0x1c50 [ 93.500726][ T9800] ? qdisc_create+0x1210/0x1210 [ 93.505558][ T9800] ? rtnetlink_rcv_msg+0x1ea/0xb00 [ 93.510664][ T9800] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 93.516910][ T9800] ? qdisc_create+0x1210/0x1210 [ 93.521739][ T9800] rtnetlink_rcv_msg+0x463/0xb00 [ 93.526658][ T9800] ? rtnetlink_put_metrics+0x580/0x580 [ 93.532201][ T9800] ? netdev_core_pick_tx+0x2f0/0x2f0 [ 93.537475][ T9800] ? __copy_skb_header+0x250/0x550 [ 93.542566][ T9800] netlink_rcv_skb+0x177/0x450 [ 93.547310][ T9800] ? rtnetlink_put_metrics+0x580/0x580 [ 93.552747][ T9800] ? netlink_ack+0xb30/0xb30 [ 93.557316][ T9800] ? netlink_deliver_tap+0x254/0xbf0 [ 93.562686][ T9800] rtnetlink_rcv+0x1d/0x30 [ 93.567105][ T9800] netlink_unicast+0x531/0x710 [ 93.571855][ T9800] ? netlink_attachskb+0x7c0/0x7c0 [ 93.578198][ T9800] ? _copy_from_iter_full+0x25d/0x8a0 [ 93.583557][ T9800] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 93.589263][ T9800] ? __check_object_size+0x3d/0x437 [ 93.595408][ T9800] netlink_sendmsg+0x8a5/0xd60 [ 93.600191][ T9800] ? netlink_unicast+0x710/0x710 [ 93.605328][ T9800] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 93.610872][ T9800] ? apparmor_socket_sendmsg+0x2a/0x30 [ 93.616466][ T9800] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 93.622689][ T9800] ? security_socket_sendmsg+0x8d/0xc0 [ 93.628143][ T9800] ? netlink_unicast+0x710/0x710 [ 93.633073][ T9800] sock_sendmsg+0xd7/0x130 [ 93.637501][ T9800] ___sys_sendmsg+0x803/0x920 [ 93.642159][ T9800] ? copy_msghdr_from_user+0x440/0x440 [ 93.647602][ T9800] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 93.653823][ T9800] ? tomoyo_path_number_perm+0x263/0x520 [ 93.659459][ T9800] ? sock_ioctl+0x489/0x780 [ 93.663938][ T9800] ? dlci_ioctl_set+0x40/0x40 [ 93.668597][ T9800] ? dlci_ioctl_set+0x40/0x40 [ 93.673252][ T9800] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 93.679469][ T9800] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 93.685684][ T9800] ? __fget_light+0x1a9/0x230 [ 93.690339][ T9800] ? __fdget+0x1b/0x20 [ 93.694394][ T9800] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 93.700628][ T9800] __sys_sendmsg+0x105/0x1d0 [ 93.705206][ T9800] ? __sys_sendmsg_sock+0xd0/0xd0 [ 93.710221][ T9800] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 93.716266][ T9800] __x64_sys_sendmsg+0x78/0xb0 [ 93.721877][ T9800] do_syscall_64+0xfd/0x6a0 [ 93.726368][ T9800] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 93.732351][ T9800] RIP: 0033:0x441b59 [ 93.736225][ T9800] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 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 7b 10 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 93.755809][ T9800] RSP: 002b:00007ffceda13738 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 93.764208][ T9800] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000000441b59 [ 93.772170][ T9800] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000003 [ 93.780136][ T9800] RBP: 00007ffceda13750 R08: 0000000001bbbbbb R09: 0000000001bbbbbb [ 93.788101][ T9800] R10: 0000000001bbbbbb R11: 0000000000000246 R12: 0000000000000000 [ 93.796065][ T9800] R13: 00000000004030f0 R14: 0000000000000000 R15: 0000000000000000 [ 93.804118][ T9800] Modules linked in: [ 93.808493][ T9800] ---[ end trace cc0f814941a79781 ]--- [ 93.813968][ T9800] RIP: 0010:__list_del_entry_valid+0x85/0xf5 [ 93.819989][ T9800] Code: 0f 84 e1 00 00 00 48 b8 22 01 00 00 00 00 ad de 49 39 c4 0f 84 e2 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 75 53 49 8b 14 24 4c 39 f2 0f 85 99 00 00 00 49 8d 7d [ 93.839635][ T9800] RSP: 0018:ffff888092f2f450 EFLAGS: 00010246 [ 93.845727][ T9800] RAX: dffffc0000000000 RBX: ffff888099b93b40 RCX: ffffffff8159b24a [ 93.853696][ T9800] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888099b93ea8 [ 93.861688][ T9800] RBP: ffff888092f2f468 R08: 0000000000000004 R09: ffffed10125e5e7d [ 93.869688][ T9800] R10: ffffed10125e5e7c R11: 0000000000000003 R12: 0000000000000000 [ 93.877673][ T9800] R13: 0000000000000000 R14: ffff888099b93ea0 R15: ffff888099b93e00 [ 93.885668][ T9800] FS: 00005555562ac880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 93.894574][ T9800] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 93.901968][ T9800] CR2: 0000000020000610 CR3: 000000009f996000 CR4: 00000000001406f0 [ 93.910147][ T9800] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 93.918141][ T9800] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 93.926125][ T9800] Kernel panic - not syncing: Fatal exception [ 93.933901][ T9800] Kernel Offset: disabled [ 93.938240][ T9800] Rebooting in 86400 seconds..