[ 76.654896][ T27] audit: type=1800 audit(1578517825.699:25): pid=9787 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 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. [ 77.646590][ T27] kauditd_printk_skb: 3 callbacks suppressed [ 77.646601][ T27] audit: type=1800 audit(1578517826.699:29): pid=9787 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 [ 77.673723][ T27] audit: type=1800 audit(1578517826.699:30): pid=9787 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 '10.128.0.156' (ECDSA) to the list of known hosts. syzkaller login: [ 88.097258][ T9942] IPVS: ftp: loaded support on port[0] = 21 [ 88.169054][ T9942] chnl_net:caif_netlink_parms(): no params data found [ 88.202481][ T9942] bridge0: port 1(bridge_slave_0) entered blocking state [ 88.210224][ T9942] bridge0: port 1(bridge_slave_0) entered disabled state [ 88.218532][ T9942] device bridge_slave_0 entered promiscuous mode [ 88.227402][ T9942] bridge0: port 2(bridge_slave_1) entered blocking state [ 88.234535][ T9942] bridge0: port 2(bridge_slave_1) entered disabled state [ 88.242956][ T9942] device bridge_slave_1 entered promiscuous mode [ 88.262391][ T9942] bond0: (slave bond_slave_0): Enslaving as an active interface with an up link [ 88.273684][ T9942] bond0: (slave bond_slave_1): Enslaving as an active interface with an up link [ 88.294652][ T9942] team0: Port device team_slave_0 added [ 88.302692][ T9942] team0: Port device team_slave_1 added [ 88.388165][ T9942] device hsr_slave_0 entered promiscuous mode [ 88.456613][ T9942] device hsr_slave_1 entered promiscuous mode [ 88.553522][ T9942] netdevsim netdevsim0 netdevsim0: renamed from eth0 [ 88.618767][ T9942] netdevsim netdevsim0 netdevsim1: renamed from eth1 [ 88.678750][ T9942] netdevsim netdevsim0 netdevsim2: renamed from eth2 [ 88.729210][ T9942] netdevsim netdevsim0 netdevsim3: renamed from eth3 [ 88.787112][ T9942] bridge0: port 2(bridge_slave_1) entered blocking state [ 88.794345][ T9942] bridge0: port 2(bridge_slave_1) entered forwarding state [ 88.802366][ T9942] bridge0: port 1(bridge_slave_0) entered blocking state [ 88.809475][ T9942] bridge0: port 1(bridge_slave_0) entered forwarding state [ 88.853783][ T9942] 8021q: adding VLAN 0 to HW filter on device bond0 [ 88.868495][ T2678] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 88.879204][ T2678] bridge0: port 1(bridge_slave_0) entered disabled state [ 88.898868][ T2678] bridge0: port 2(bridge_slave_1) entered disabled state [ 88.907479][ T2678] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 88.921240][ T9942] 8021q: adding VLAN 0 to HW filter on device team0 [ 88.932581][ T2684] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 88.941945][ T2684] bridge0: port 1(bridge_slave_0) entered blocking state [ 88.949269][ T2684] bridge0: port 1(bridge_slave_0) entered forwarding state [ 88.961188][ T2678] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 88.970505][ T2678] bridge0: port 2(bridge_slave_1) entered blocking state [ 88.977696][ T2678] bridge0: port 2(bridge_slave_1) entered forwarding state [ 88.997129][ T2678] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 89.009880][ T2685] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 89.017951][ T2685] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 89.031217][ T2684] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 89.042935][ T2685] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 89.054312][ T9942] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 89.073356][ T2684] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan0: link becomes ready [ 89.080887][ T2684] IPv6: ADDRCONF(NETDEV_CHANGE): vxcan1: link becomes ready [ 89.095231][ T9942] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 89.115059][ T2685] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_virt_wifi: link becomes ready [ 89.137305][ T2696] IPv6: ADDRCONF(NETDEV_CHANGE): veth0_vlan: link becomes ready [ 89.145822][ T2696] IPv6: ADDRCONF(NETDEV_CHANGE): vlan0: link becomes ready [ 89.154832][ T2696] IPv6: ADDRCONF(NETDEV_CHANGE): vlan1: link becomes ready executing program [ 89.164524][ T9942] device veth0_vlan entered promiscuous mode [ 89.176836][ T9942] device veth1_vlan entered promiscuous mode executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 93.892012][ T9988] ------------[ cut here ]------------ [ 93.898230][ T9988] WARNING: CPU: 0 PID: 9988 at include/net/sock.h:1578 tcp_ack+0x2f36/0x5a00 [ 93.907763][ T9988] Kernel panic - not syncing: panic_on_warn set ... [ 93.914479][ T9988] CPU: 0 PID: 9988 Comm: syz-executor253 Not tainted 5.5.0-rc5-syzkaller #0 [ 93.923140][ T9988] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 93.933530][ T9988] Call Trace: [ 93.936807][ T9988] dump_stack+0x197/0x210 [ 93.941117][ T9988] ? tcp_ack+0x2ee0/0x5a00 [ 93.945531][ T9988] panic+0x2e3/0x75c [ 93.949414][ T9988] ? add_taint.cold+0x16/0x16 [ 93.954075][ T9988] ? printk+0xba/0xed [ 93.958042][ T9988] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 93.963508][ T9988] ? __warn.cold+0x14/0x3e [ 93.967934][ T9988] ? __warn+0xd9/0x1cf [ 93.972010][ T9988] ? tcp_ack+0x2f36/0x5a00 [ 93.976434][ T9988] __warn.cold+0x2f/0x3e [ 93.980685][ T9988] ? report_bug.cold+0x63/0xb2 [ 93.985444][ T9988] ? tcp_ack+0x2f36/0x5a00 [ 93.989841][ T9988] report_bug+0x289/0x300 [ 93.994160][ T9988] do_error_trap+0x11b/0x200 [ 93.998738][ T9988] do_invalid_op+0x37/0x50 [ 94.003133][ T9988] ? tcp_ack+0x2f36/0x5a00 [ 94.007714][ T9988] invalid_op+0x23/0x30 [ 94.011851][ T9988] RIP: 0010:tcp_ack+0x2f36/0x5a00 [ 94.016863][ T9988] Code: d0 7c 08 84 d2 0f 85 9c 22 00 00 44 8b 2d b6 0c e3 03 31 ff 44 89 ee e8 28 7d dc fa 45 85 ed 0f 84 28 d9 ff ff e8 9a 7b dc fa <0f> 0b e9 1c d9 ff ff 48 c7 c3 ff ff ff ff 48 c7 85 70 fe ff ff ff [ 94.036472][ T9988] RSP: 0018:ffffc90001da6b70 EFLAGS: 00010293 [ 94.042624][ T9988] RAX: ffff8880a824e240 RBX: 0000000000000068 RCX: ffffffff8698ab48 [ 94.050591][ T9988] RDX: 0000000000000000 RSI: ffffffff8698ab56 RDI: 0000000000000005 [ 94.058639][ T9988] RBP: ffffc90001da6dd0 R08: ffff8880a824e240 R09: fffffbfff165eba8 [ 94.066596][ T9988] R10: fffffbfff165eba7 R11: ffffffff8b2f5d3f R12: 0000000000000002 [ 94.074647][ T9988] R13: 0000000000000001 R14: 0000000000002400 R15: ffff8880a179c140 [ 94.082754][ T9988] ? tcp_ack+0x2f28/0x5a00 [ 94.087171][ T9988] ? tcp_ack+0x2f36/0x5a00 [ 94.091604][ T9988] ? __lock_acquire+0x29c9/0x4a00 [ 94.096793][ T9988] ? tcp_fastretrans_alert+0x23f0/0x23f0 [ 94.102404][ T9988] ? mark_held_locks+0xa4/0xf0 [ 94.107165][ T9988] ? ktime_get+0x100/0x2f0 [ 94.111576][ T9988] ? ktime_get+0x100/0x2f0 [ 94.115997][ T9988] ? lockdep_hardirqs_on+0x421/0x5e0 [ 94.121311][ T9988] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 94.127543][ T9988] ? inet_sk_rx_dst_set+0x256/0x3b0 [ 94.133163][ T9988] ? tcp_validate_incoming+0x431/0x1660 [ 94.138696][ T9988] tcp_rcv_established+0x6dd/0x1e90 [ 94.143889][ T9988] ? tcp_data_queue+0x49c0/0x49c0 [ 94.148980][ T9988] ? __local_bh_enable_ip+0x15a/0x270 [ 94.154836][ T9988] ? lockdep_hardirqs_on+0x421/0x5e0 [ 94.160111][ T9988] ? __release_sock+0xca/0x390 [ 94.164856][ T9988] ? trace_hardirqs_on+0x67/0x240 [ 94.169877][ T9988] tcp_v4_do_rcv+0x619/0x8d0 [ 94.174454][ T9988] __release_sock+0x129/0x390 [ 94.179121][ T9988] release_sock+0x59/0x1c0 [ 94.183518][ T9988] gtp_encap_enable_socket+0x146/0x400 [ 94.188958][ T9988] ? gtp_find_pdp_by_link+0x480/0x480 [ 94.194308][ T9988] ? memset+0x32/0x40 [ 94.198275][ T9988] ? alloc_netdev_mqs+0xa22/0xde0 [ 94.203280][ T9988] gtp_newlink+0x9fc/0xc60 [ 94.207677][ T9988] ? rtnl_create_link+0x192/0xab0 [ 94.212680][ T9988] ? netlink_ns_capable+0x26/0x30 [ 94.217705][ T9988] ? gtp_genl_get_pdp+0x5c0/0x5c0 [ 94.222708][ T9988] __rtnl_newlink+0x109e/0x1790 [ 94.227546][ T9988] ? rtnl_link_unregister+0x250/0x250 [ 94.232912][ T9988] ? is_bpf_text_address+0xce/0x160 [ 94.238108][ T9988] ? kernel_text_address+0x73/0xf0 [ 94.243214][ T9988] ? unwind_get_return_address+0x61/0xa0 [ 94.248828][ T9988] ? profile_setup.cold+0xbb/0xbb [ 94.253850][ T9988] ? arch_stack_walk+0x97/0xf0 [ 94.258602][ T9988] ? stack_trace_save+0xac/0xe0 [ 94.263434][ T9988] ? stack_trace_consume_entry+0x190/0x190 [ 94.269305][ T9988] ? mark_lock+0xc2/0x1220 [ 94.273716][ T9988] ? save_stack+0x5c/0x90 [ 94.278089][ T9988] ? save_stack+0x23/0x90 [ 94.282465][ T9988] ? __kasan_kmalloc.constprop.0+0xcf/0xe0 [ 94.288257][ T9988] ? kasan_kmalloc+0x9/0x10 [ 94.292760][ T9988] ? kmem_cache_alloc_trace+0x158/0x790 [ 94.298604][ T9988] ? rtnl_newlink+0x4b/0xa0 [ 94.303100][ T9988] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 94.308639][ T9988] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 94.314608][ T9988] rtnl_newlink+0x69/0xa0 [ 94.318993][ T9988] ? __rtnl_newlink+0x1790/0x1790 [ 94.324014][ T9988] rtnetlink_rcv_msg+0x45e/0xaf0 [ 94.329142][ T9988] ? rtnl_bridge_getlink+0x910/0x910 [ 94.334588][ T9988] ? netlink_deliver_tap+0x228/0xbe0 [ 94.339900][ T9988] ? find_held_lock+0x35/0x130 [ 94.344653][ T9988] netlink_rcv_skb+0x177/0x450 [ 94.349405][ T9988] ? rtnl_bridge_getlink+0x910/0x910 [ 94.355455][ T9988] ? netlink_ack+0xb50/0xb50 [ 94.360026][ T9988] ? __kasan_check_read+0x11/0x20 [ 94.365050][ T9988] ? netlink_deliver_tap+0x24a/0xbe0 [ 94.370340][ T9988] rtnetlink_rcv+0x1d/0x30 [ 94.374769][ T9988] netlink_unicast+0x58c/0x7d0 [ 94.379534][ T9988] ? netlink_attachskb+0x870/0x870 [ 94.384629][ T9988] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 94.390416][ T9988] ? __check_object_size+0x3d/0x437 [ 94.395767][ T9988] netlink_sendmsg+0x91c/0xea0 [ 94.400545][ T9988] ? netlink_unicast+0x7d0/0x7d0 [ 94.405538][ T9988] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 94.411179][ T9988] ? apparmor_socket_sendmsg+0x2a/0x30 [ 94.416670][ T9988] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 94.422921][ T9988] ? security_socket_sendmsg+0x8d/0xc0 [ 94.428442][ T9988] ? netlink_unicast+0x7d0/0x7d0 [ 94.433389][ T9988] sock_sendmsg+0xd7/0x130 [ 94.437811][ T9988] ____sys_sendmsg+0x753/0x880 [ 94.442569][ T9988] ? kernel_sendmsg+0x50/0x50 [ 94.447239][ T9988] ? __fget+0x35d/0x550 [ 94.451387][ T9988] ? find_held_lock+0x35/0x130 [ 94.456139][ T9988] ___sys_sendmsg+0x100/0x170 [ 94.460908][ T9988] ? sendmsg_copy_msghdr+0x70/0x70 [ 94.466005][ T9988] ? __kasan_check_read+0x11/0x20 [ 94.471011][ T9988] ? __fget+0x37f/0x550 [ 94.475149][ T9988] ? ksys_dup3+0x3e0/0x3e0 [ 94.479548][ T9988] ? __kasan_check_read+0x11/0x20 [ 94.484562][ T9988] ? mark_lock+0xc2/0x1220 [ 94.488968][ T9988] ? __fget_light+0x1a9/0x230 [ 94.493636][ T9988] ? __fdget+0x1b/0x20 [ 94.497689][ T9988] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 94.503917][ T9988] __sys_sendmsg+0x105/0x1d0 [ 94.508495][ T9988] ? __sys_sendmsg_sock+0xc0/0xc0 [ 94.513511][ T9988] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 94.519060][ T9988] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 94.524499][ T9988] ? do_syscall_64+0x26/0x790 [ 94.529169][ T9988] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 94.535224][ T9988] ? do_syscall_64+0x26/0x790 [ 94.539900][ T9988] __x64_sys_sendmsg+0x78/0xb0 [ 94.544644][ T9988] do_syscall_64+0xfa/0x790 [ 94.549145][ T9988] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 94.555045][ T9988] RIP: 0033:0x449529 [ 94.558919][ T9988] Code: e8 8c 0f 03 00 48 83 c4 18 c3 0f 1f 80 00 00 00 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 fb 06 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 94.578605][ T9988] RSP: 002b:00007fbbf32f0d98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 94.587011][ T9988] RAX: ffffffffffffffda RBX: 00000000006e5a18 RCX: 0000000000449529 [ 94.595049][ T9988] RDX: 0000000020000000 RSI: 0000000020000180 RDI: 0000000000000003 [ 94.603105][ T9988] RBP: 00000000006e5a10 R08: 0000000000000001 R09: 0000000000000000 [ 94.611146][ T9988] R10: 0000000000000008 R11: 0000000000000246 R12: 00000000006e5a1c [ 94.619120][ T9988] R13: d8de18c65af65c00 R14: 6078ba41124867b9 R15: 88651f7f928a260c [ 94.628587][ T9988] Kernel Offset: disabled [ 94.632984][ T9988] Rebooting in 86400 seconds..