[ 35.117580] audit: type=1800 audit(1551387022.614:27): pid=7456 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 35.152456] audit: type=1800 audit(1551387022.614:28): pid=7456 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 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. [ 35.902241] audit: type=1800 audit(1551387023.444:29): pid=7456 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 [ 35.921711] audit: type=1800 audit(1551387023.454:30): pid=7456 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 '10.128.0.22' (ECDSA) to the list of known hosts. syzkaller login: [ 43.132942] IPVS: ftp: loaded support on port[0] = 21 [ 43.189102] chnl_net:caif_netlink_parms(): no params data found [ 43.218516] bridge0: port 1(bridge_slave_0) entered blocking state [ 43.225243] bridge0: port 1(bridge_slave_0) entered disabled state [ 43.232282] device bridge_slave_0 entered promiscuous mode [ 43.239496] bridge0: port 2(bridge_slave_1) entered blocking state [ 43.245984] bridge0: port 2(bridge_slave_1) entered disabled state [ 43.252766] device bridge_slave_1 entered promiscuous mode [ 43.267195] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 43.276099] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 43.293567] team0: Port device team_slave_0 added [ 43.300002] team0: Port device team_slave_1 added [ 43.347235] device hsr_slave_0 entered promiscuous mode [ 43.385558] device hsr_slave_1 entered promiscuous mode [ 43.452098] bridge0: port 2(bridge_slave_1) entered blocking state [ 43.458544] bridge0: port 2(bridge_slave_1) entered forwarding state [ 43.465482] bridge0: port 1(bridge_slave_0) entered blocking state [ 43.471830] bridge0: port 1(bridge_slave_0) entered forwarding state [ 43.496599] 8021q: adding VLAN 0 to HW filter on device bond0 [ 43.509284] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 43.518832] bridge0: port 1(bridge_slave_0) entered disabled state [ 43.527362] bridge0: port 2(bridge_slave_1) entered disabled state [ 43.534390] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 43.544565] 8021q: adding VLAN 0 to HW filter on device team0 [ 43.554139] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 43.562129] bridge0: port 1(bridge_slave_0) entered blocking state [ 43.568507] bridge0: port 1(bridge_slave_0) entered forwarding state [ 43.579096] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 43.586856] bridge0: port 2(bridge_slave_1) entered blocking state [ 43.593192] bridge0: port 2(bridge_slave_1) entered forwarding state [ 43.611335] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 43.621418] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 43.634017] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 43.642086] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 43.649901] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready executing program [ 43.657908] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 43.666310] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 43.673188] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 43.689819] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 43.702855] kasan: CONFIG_KASAN_INLINE enabled [ 43.707571] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 43.714935] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 43.721152] CPU: 1 PID: 7609 Comm: syz-executor851 Not tainted 5.0.0-rc8+ #89 [ 43.728426] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.737772] RIP: 0010:xfrmi_decode_session+0x15c/0x6c0 [ 43.743030] 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 [ 43.762263] RSP: 0018:ffff88809152f018 EFLAGS: 00010246 [ 43.767608] RAX: dffffc0000000000 RBX: ffff88809d2cc140 RCX: ffffffff86026003 [ 43.774865] RDX: 0000000000000000 RSI: ffffffff86026040 RDI: ffff8880a854a788 [ 43.782117] RBP: ffff88809152f040 R08: ffff88809532e1c0 R09: ffffed1015d25bd0 [ 43.789366] R10: ffffed1015d25bcf R11: ffff8880ae92de7b R12: 0000000000000000 [ 43.796621] R13: 0000000000000037 R14: ffff88809d2cc150 R15: ffffffffffffffff [ 43.803907] FS: 0000000001b99880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 43.812113] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 43.817973] CR2: 0000000020200000 CR3: 0000000097f5e000 CR4: 00000000001406e0 [ 43.825236] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 43.832497] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 43.839747] Call Trace: [ 43.842319] __xfrm_policy_check+0x1f8/0x2730 [ 43.846800] ? kasan_check_read+0x11/0x20 [ 43.850928] ? find_held_lock+0x35/0x130 [ 43.854970] ? vti6_tnl_lookup+0x287/0x1020 [ 43.859277] ? __xfrm_route_forward+0x860/0x860 [ 43.863929] ? __lock_is_held+0xb6/0x140 [ 43.867971] ? check_preemption_disabled+0x48/0x290 [ 43.872969] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 43.878401] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 43.883919] ? vti6_tnl_lookup+0x69a/0x1020 [ 43.888223] ? vti6_init_net+0x820/0x820 [ 43.892276] ? check_preemption_disabled+0x48/0x290 [ 43.897276] vti6_rcv+0x51a/0x970 [ 43.900712] xfrm6_esp_rcv+0xd8/0x230 [ 43.904495] ip6_protocol_deliver_rcu+0x303/0x16c0 [ 43.909413] ? lock_acquire+0x16f/0x3f0 [ 43.913374] ? rcu_softirq_qs+0x10/0x20 [ 43.917352] ip6_input_finish+0x84/0x170 [ 43.921416] ip6_input+0xe4/0x3f0 [ 43.924848] ? ip6_input_finish+0x170/0x170 [ 43.929163] ? ip6_protocol_deliver_rcu+0x16c0/0x16c0 [ 43.934344] ? ipv6_chk_mcast_addr+0x2f2/0x6f0 [ 43.938942] ip6_mc_input+0x4aa/0xf30 [ 43.942727] ? ip6_input+0x3f0/0x3f0 [ 43.946560] ip6_rcv_finish+0x1e7/0x320 [ 43.950517] ipv6_rcv+0x10e/0x420 [ 43.954039] ? ip6_rcv_core.isra.0+0x1c00/0x1c00 [ 43.958780] ? ip6_rcv_finish_core.isra.0+0x590/0x590 [ 43.963949] ? ip6_rcv_core.isra.0+0x1c00/0x1c00 [ 43.968686] __netif_receive_skb_one_core+0x115/0x1a0 [ 43.973855] ? __netif_receive_skb_core+0x3010/0x3010 [ 43.979037] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 43.984557] ? check_preemption_disabled+0x48/0x290 [ 43.989554] ? lock_acquire+0x16f/0x3f0 [ 43.993508] __netif_receive_skb+0x2c/0x1c0 [ 43.997815] netif_receive_skb_internal+0x117/0x660 [ 44.002812] ? dev_cpu_dead+0x920/0x920 [ 44.006768] ? eth_gro_receive+0x890/0x890 [ 44.010987] napi_gro_frags+0xade/0xd10 [ 44.014943] tun_get_user+0x2c0e/0x3dd0 [ 44.018906] ? tun_build_skb.isra.0+0x1150/0x1150 [ 44.023729] ? tun_get+0x171/0x290 [ 44.027254] ? lock_downgrade+0x810/0x810 [ 44.031386] ? kasan_check_read+0x11/0x20 [ 44.035518] tun_chr_write_iter+0xbd/0x160 [ 44.039732] do_iter_readv_writev+0x5e0/0x8e0 [ 44.044208] ? vfs_dedupe_file_range+0x780/0x780 [ 44.048945] ? apparmor_file_permission+0x25/0x30 [ 44.053768] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 44.059289] ? rw_verify_area+0x118/0x360 [ 44.063417] do_iter_write+0x184/0x610 [ 44.067288] ? dup_iter+0x260/0x260 [ 44.070897] vfs_writev+0x1b3/0x2f0 [ 44.074502] ? vfs_iter_write+0xb0/0xb0 [ 44.078458] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 44.084007] ? __handle_mm_fault+0x7cd/0x3f20 [ 44.088489] ? vmf_insert_mixed_mkwrite+0x40/0x40 [ 44.093312] ? find_held_lock+0x35/0x130 [ 44.097359] ? __do_page_fault+0x610/0xd60 [ 44.101586] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 44.107107] ? __fget_light+0x1a9/0x230 [ 44.111091] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 44.116613] do_writev+0xf6/0x290 [ 44.120046] ? vfs_writev+0x2f0/0x2f0 [ 44.123831] ? do_syscall_64+0x26/0x610 [ 44.127788] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 44.133133] ? do_syscall_64+0x26/0x610 [ 44.137090] __x64_sys_writev+0x75/0xb0 [ 44.141047] do_syscall_64+0x103/0x610 [ 44.144914] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 44.150083] RIP: 0033:0x442000 [ 44.153258] 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 [ 44.172141] RSP: 002b:00007ffede91c398 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 44.179831] RAX: ffffffffffffffda RBX: 00007ffede91c3e0 RCX: 0000000000442000 [ 44.187100] RDX: 0000000000000001 RSI: 00007ffede91c3e0 RDI: 00000000000000f0 [ 44.194350] RBP: 0000000000000003 R08: 000000000000bbff R09: 0000000000000000 [ 44.201619] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffede91c3b0 [ 44.208875] R13: 0000000000403430 R14: 0000000000000000 R15: 0000000000000000 [ 44.216127] Modules linked in: [ 44.219361] ---[ end trace 7cfd7c732413aa79 ]--- [ 44.224140] RIP: 0010:xfrmi_decode_session+0x15c/0x6c0 [ 44.229433] 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 [ 44.248355] RSP: 0018:ffff88809152f018 EFLAGS: 00010246 [ 44.253704] RAX: dffffc0000000000 RBX: ffff88809d2cc140 RCX: ffffffff86026003 [ 44.260986] RDX: 0000000000000000 RSI: ffffffff86026040 RDI: ffff8880a854a788 [ 44.268270] RBP: ffff88809152f040 R08: ffff88809532e1c0 R09: ffffed1015d25bd0 [ 44.275575] R10: ffffed1015d25bcf R11: ffff8880ae92de7b R12: 0000000000000000 [ 44.282846] R13: 0000000000000037 R14: ffff88809d2cc150 R15: ffffffffffffffff [ 44.290146] FS: 0000000001b99880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 44.298389] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 44.304256] CR2: 0000000020200000 CR3: 0000000097f5e000 CR4: 00000000001406e0 [ 44.311567] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 44.318850] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 44.326165] Kernel panic - not syncing: Fatal exception in interrupt [ 44.333629] Kernel Offset: disabled [ 44.337252] Rebooting in 86400 seconds..