[ 39.969805] audit: type=1800 audit(1551440982.898:31): pid=7835 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 39.992598] audit: type=1800 audit(1551440982.898:32): pid=7835 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 res=0 Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.10.53' (ECDSA) to the list of known hosts. syzkaller login: [ 50.446536] kauditd_printk_skb: 3 callbacks suppressed [ 50.446554] audit: type=1400 audit(1551440993.448:36): avc: denied { map } for pid=8024 comm="syz-executor393" path="/root/syz-executor393054503" dev="sda1" ino=16484 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 50.469179] IPVS: ftp: loaded support on port[0] = 21 [ 50.533722] chnl_net:caif_netlink_parms(): no params data found [ 50.563550] bridge0: port 1(bridge_slave_0) entered blocking state [ 50.570349] bridge0: port 1(bridge_slave_0) entered disabled state [ 50.577873] device bridge_slave_0 entered promiscuous mode [ 50.584864] bridge0: port 2(bridge_slave_1) entered blocking state [ 50.591320] bridge0: port 2(bridge_slave_1) entered disabled state [ 50.598168] device bridge_slave_1 entered promiscuous mode [ 50.613805] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 50.623345] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 50.640295] team0: Port device team_slave_0 added [ 50.646495] team0: Port device team_slave_1 added [ 50.727167] device hsr_slave_0 entered promiscuous mode [ 50.775677] device hsr_slave_1 entered promiscuous mode [ 50.852236] bridge0: port 2(bridge_slave_1) entered blocking state [ 50.858711] bridge0: port 2(bridge_slave_1) entered forwarding state [ 50.865488] bridge0: port 1(bridge_slave_0) entered blocking state [ 50.871813] bridge0: port 1(bridge_slave_0) entered forwarding state [ 50.900823] 8021q: adding VLAN 0 to HW filter on device bond0 [ 50.911914] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 50.931128] bridge0: port 1(bridge_slave_0) entered disabled state [ 50.938531] bridge0: port 2(bridge_slave_1) entered disabled state [ 50.947077] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 50.958955] 8021q: adding VLAN 0 to HW filter on device team0 [ 50.968170] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 50.976304] bridge0: port 1(bridge_slave_0) entered blocking state [ 50.982656] bridge0: port 1(bridge_slave_0) entered forwarding state [ 50.996778] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 51.004400] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.010840] bridge0: port 2(bridge_slave_1) entered forwarding state [ 51.021501] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 51.030968] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 51.040551] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready executing program [ 51.051684] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 51.062409] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 51.071383] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 51.088779] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 51.104183] kasan: CONFIG_KASAN_INLINE enabled [ 51.108894] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 51.116311] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 51.122539] CPU: 0 PID: 8025 Comm: syz-executor393 Not tainted 5.0.0-rc8+ #88 [ 51.129790] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.139142] RIP: 0010:xfrmi_decode_session+0x15c/0x6c0 [ 51.144398] Code: 7c fc 08 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 2e 05 00 00 48 b8 00 00 00 00 00 fc ff df 4f 8b 64 fc 08 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 01 05 00 00 4d 8b 3c 24 e8 d1 41 5b fb e8 fc 7d [ 51.163305] RSP: 0018:ffff88808f54f018 EFLAGS: 00010246 [ 51.168671] RAX: dffffc0000000000 RBX: ffff88809600b200 RCX: ffffffff86026003 [ 51.175922] RDX: 0000000000000000 RSI: ffffffff86026040 RDI: ffff88808e2499c8 [ 51.183432] RBP: ffff88808f54f040 R08: ffff888097eda280 R09: ffffed1015d05bd0 [ 51.190723] R10: ffffed1015d05bcf R11: ffff8880ae82de7b R12: 0000000000000000 [ 51.197973] R13: 0000000000000037 R14: ffff88809600b210 R15: ffffffffffffffff [ 51.205227] FS: 0000000001666880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 51.213432] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 51.219299] CR2: 0000000020200000 CR3: 000000008e3e9000 CR4: 00000000001406f0 [ 51.226556] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 51.233805] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 51.241063] Call Trace: [ 51.243648] __xfrm_policy_check+0x1f8/0x2730 [ 51.248132] ? kasan_check_read+0x11/0x20 [ 51.252267] ? find_held_lock+0x35/0x130 [ 51.256311] ? vti6_tnl_lookup+0x287/0x1020 [ 51.260622] ? __xfrm_route_forward+0x860/0x860 [ 51.265271] ? __lock_is_held+0xb6/0x140 [ 51.269323] ? check_preemption_disabled+0x48/0x290 [ 51.274322] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 51.279764] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 51.285289] ? vti6_tnl_lookup+0x69a/0x1020 [ 51.289590] ? vti6_init_net+0x820/0x820 [ 51.293634] ? check_preemption_disabled+0x48/0x290 [ 51.298637] vti6_rcv+0x51a/0x970 [ 51.302105] xfrm6_esp_rcv+0xd8/0x230 [ 51.305889] ip6_protocol_deliver_rcu+0x303/0x16c0 [ 51.310799] ? lock_acquire+0x16f/0x3f0 [ 51.314755] ? rcu_softirq_qs+0x10/0x20 [ 51.318718] ip6_input_finish+0x84/0x170 [ 51.322771] ip6_input+0xe4/0x3f0 [ 51.326246] ? ip6_input_finish+0x170/0x170 [ 51.330567] ? ip6_protocol_deliver_rcu+0x16c0/0x16c0 [ 51.335747] ? ipv6_chk_mcast_addr+0x2f2/0x6f0 [ 51.340309] ip6_mc_input+0x4aa/0xf30 [ 51.344102] ? ip6_input+0x3f0/0x3f0 [ 51.347802] ip6_rcv_finish+0x1e7/0x320 [ 51.351758] ipv6_rcv+0x10e/0x420 [ 51.355208] ? ip6_rcv_core.isra.0+0x1c00/0x1c00 [ 51.359982] ? ip6_rcv_finish_core.isra.0+0x590/0x590 [ 51.365175] ? ip6_rcv_core.isra.0+0x1c00/0x1c00 [ 51.369918] __netif_receive_skb_one_core+0x115/0x1a0 [ 51.375088] ? __netif_receive_skb_core+0x3010/0x3010 [ 51.380258] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 51.385777] ? check_preemption_disabled+0x48/0x290 [ 51.390796] ? lock_acquire+0x16f/0x3f0 [ 51.394754] __netif_receive_skb+0x2c/0x1c0 [ 51.399083] netif_receive_skb_internal+0x117/0x660 [ 51.404088] ? dev_cpu_dead+0x920/0x920 [ 51.408050] ? eth_gro_receive+0x890/0x890 [ 51.412280] napi_gro_frags+0xade/0xd10 [ 51.416239] tun_get_user+0x2c0e/0x3dd0 [ 51.420205] ? tun_build_skb.isra.0+0x1150/0x1150 [ 51.425023] ? tun_get+0x171/0x290 [ 51.428547] ? lock_downgrade+0x810/0x810 [ 51.432681] ? kasan_check_read+0x11/0x20 [ 51.436817] tun_chr_write_iter+0xbd/0x160 [ 51.441042] do_iter_readv_writev+0x5e0/0x8e0 [ 51.445541] ? vfs_dedupe_file_range+0x780/0x780 [ 51.450280] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 51.455808] ? rw_verify_area+0x118/0x360 [ 51.459944] do_iter_write+0x184/0x610 [ 51.463817] ? dup_iter+0x260/0x260 [ 51.467428] vfs_writev+0x1b3/0x2f0 [ 51.471039] ? vfs_iter_write+0xb0/0xb0 [ 51.475042] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 51.480596] ? __handle_mm_fault+0x7cd/0x3f20 [ 51.485110] ? vmf_insert_mixed_mkwrite+0x40/0x40 [ 51.489976] ? find_held_lock+0x35/0x130 [ 51.494311] ? __do_page_fault+0x610/0xd60 [ 51.498555] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 51.504122] ? __fget_light+0x1a9/0x230 [ 51.508098] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 51.513642] do_writev+0xf6/0x290 [ 51.517097] ? vfs_writev+0x2f0/0x2f0 [ 51.520887] ? do_syscall_64+0x26/0x610 [ 51.524880] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 51.530236] ? do_syscall_64+0x26/0x610 [ 51.534196] __x64_sys_writev+0x75/0xb0 [ 51.538157] do_syscall_64+0x103/0x610 [ 51.542035] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 51.547217] RIP: 0033:0x442000 [ 51.550397] Code: 05 48 3d 01 f0 ff ff 0f 83 3d 0f fc ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 83 3d 11 90 29 00 00 75 14 b8 14 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 14 0f fc ff c3 48 83 ec 08 e8 7a 2b 00 00 [ 51.569299] RSP: 002b:00007fff806edd38 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 51.576993] RAX: ffffffffffffffda RBX: 00007fff806edd80 RCX: 0000000000442000 [ 51.584243] RDX: 0000000000000001 RSI: 00007fff806edd80 RDI: 00000000000000f0 [ 51.591501] RBP: 0000000000000003 R08: 000000000000bbff R09: 0000000000000000 [ 51.598762] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff806edd50 [ 51.606017] R13: 0000000000403430 R14: 0000000000000000 R15: 0000000000000000 [ 51.613284] Modules linked in: [ 51.616529] ---[ end trace 812b5b87f64944a8 ]--- [ 51.621301] RIP: 0010:xfrmi_decode_session+0x15c/0x6c0 [ 51.626590] Code: 7c fc 08 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 2e 05 00 00 48 b8 00 00 00 00 00 fc ff df 4f 8b 64 fc 08 4c 89 e2 48 c1 ea 03 <80> 3c 02 00 0f 85 01 05 00 00 4d 8b 3c 24 e8 d1 41 5b fb e8 fc 7d [ 51.645508] RSP: 0018:ffff88808f54f018 EFLAGS: 00010246 [ 51.650851] RAX: dffffc0000000000 RBX: ffff88809600b200 RCX: ffffffff86026003 [ 51.658130] RDX: 0000000000000000 RSI: ffffffff86026040 RDI: ffff88808e2499c8 [ 51.665423] RBP: ffff88808f54f040 R08: ffff888097eda280 R09: ffffed1015d05bd0 [ 51.672679] R10: ffffed1015d05bcf R11: ffff8880ae82de7b R12: 0000000000000000 [ 51.679956] R13: 0000000000000037 R14: ffff88809600b210 R15: ffffffffffffffff [ 51.687237] FS: 0000000001666880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 51.695481] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 51.701362] CR2: 0000000020200000 CR3: 000000008e3e9000 CR4: 00000000001406f0 [ 51.708658] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 51.715948] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 51.723199] Kernel panic - not syncing: Fatal exception in interrupt [ 51.730706] Kernel Offset: disabled [ 51.734324] Rebooting in 86400 seconds..