[ 39.726124] audit: type=1800 audit(1551438699.325:32): pid=7762 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 syzkaller login: [ 44.072996] kauditd_printk_skb: 2 callbacks suppressed [ 44.073011] audit: type=1400 audit(1551438703.715:35): avc: denied { map } for pid=7938 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added '10.128.0.242' (ECDSA) to the list of known hosts. [ 51.154285] audit: type=1400 audit(1551438710.795:36): avc: denied { map } for pid=7950 comm="syz-executor918" path="/root/syz-executor918209245" dev="sda1" ino=16483 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 51.189818] IPVS: ftp: loaded support on port[0] = 21 [ 51.245017] chnl_net:caif_netlink_parms(): no params data found [ 51.274485] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.281267] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.288228] device bridge_slave_0 entered promiscuous mode [ 51.295751] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.302233] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.309482] device bridge_slave_1 entered promiscuous mode [ 51.324849] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 51.333689] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 51.348861] team0: Port device team_slave_0 added [ 51.355291] team0: Port device team_slave_1 added [ 51.424349] device hsr_slave_0 entered promiscuous mode [ 51.491378] device hsr_slave_1 entered promiscuous mode [ 51.548782] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.555271] bridge0: port 2(bridge_slave_1) entered forwarding state [ 51.562428] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.568860] bridge0: port 1(bridge_slave_0) entered forwarding state [ 51.598272] 8021q: adding VLAN 0 to HW filter on device bond0 [ 51.610114] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 51.620856] bridge0: port 1(bridge_slave_0) entered disabled state [ 51.628846] bridge0: port 2(bridge_slave_1) entered disabled state [ 51.636064] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 51.646912] 8021q: adding VLAN 0 to HW filter on device team0 [ 51.656240] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 51.664019] bridge0: port 1(bridge_slave_0) entered blocking state [ 51.670348] bridge0: port 1(bridge_slave_0) entered forwarding state [ 51.690800] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 51.701220] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 51.713308] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 51.721095] bridge0: port 2(bridge_slave_1) entered blocking state [ 51.727525] bridge0: port 2(bridge_slave_1) entered forwarding state [ 51.734946] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready executing program [ 51.742910] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 51.750415] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready [ 51.758678] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 51.766296] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 51.773440] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 51.789693] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 51.804857] kasan: CONFIG_KASAN_INLINE enabled [ 51.809562] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 51.817002] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 51.823239] CPU: 0 PID: 7951 Comm: syz-executor918 Not tainted 5.0.0-rc8+ #88 [ 51.830490] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.839837] RIP: 0010:xfrmi_decode_session+0x15c/0x6c0 [ 51.845099] 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 [ 51.863991] RSP: 0018:ffff888099337018 EFLAGS: 00010246 [ 51.869340] RAX: dffffc0000000000 RBX: ffff8880828fbb80 RCX: ffffffff86026003 [ 51.876590] RDX: 0000000000000000 RSI: ffffffff86026040 RDI: ffff8880806a6f08 [ 51.883840] RBP: ffff888099337040 R08: ffff88808671c400 R09: ffffed1015d05bd0 [ 51.891096] R10: ffffed1015d05bcf R11: ffff8880ae82de7b R12: 0000000000000000 [ 51.898346] R13: 0000000000000037 R14: ffff8880828fbb90 R15: ffffffffffffffff [ 51.905600] FS: 0000000000c26880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 51.913804] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 51.919682] CR2: 0000000020200000 CR3: 00000000a68d4000 CR4: 00000000001406f0 [ 51.926935] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 51.934192] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 51.941447] Call Trace: [ 51.944040] __xfrm_policy_check+0x1f8/0x2730 [ 51.948522] ? kasan_check_read+0x11/0x20 [ 51.952653] ? find_held_lock+0x35/0x130 [ 51.956694] ? vti6_tnl_lookup+0x287/0x1020 [ 51.961001] ? __xfrm_route_forward+0x860/0x860 [ 51.965654] ? __lock_is_held+0xb6/0x140 [ 51.969699] ? check_preemption_disabled+0x48/0x290 [ 51.974702] ? rcu_lockdep_current_cpu_online+0xe3/0x130 [ 51.980136] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 51.985656] ? vti6_tnl_lookup+0x69a/0x1020 [ 51.989958] ? vti6_init_net+0x820/0x820 [ 51.994000] ? check_preemption_disabled+0x48/0x290 [ 51.999014] vti6_rcv+0x51a/0x970 [ 52.002456] xfrm6_esp_rcv+0xd8/0x230 [ 52.006255] ip6_protocol_deliver_rcu+0x303/0x16c0 [ 52.011192] ? lock_acquire+0x16f/0x3f0 [ 52.015171] ? rcu_softirq_qs+0x10/0x20 [ 52.019134] ip6_input_finish+0x84/0x170 [ 52.023174] ip6_input+0xe4/0x3f0 [ 52.026638] ? ip6_input_finish+0x170/0x170 [ 52.030966] ? ip6_protocol_deliver_rcu+0x16c0/0x16c0 [ 52.036140] ? ipv6_chk_mcast_addr+0x2f2/0x6f0 [ 52.040702] ip6_mc_input+0x4aa/0xf30 [ 52.044489] ? ip6_input+0x3f0/0x3f0 [ 52.048209] ip6_rcv_finish+0x1e7/0x320 [ 52.052163] ipv6_rcv+0x10e/0x420 [ 52.055601] ? ip6_rcv_core.isra.0+0x1c00/0x1c00 [ 52.060337] ? ip6_rcv_finish_core.isra.0+0x590/0x590 [ 52.065511] ? ip6_rcv_core.isra.0+0x1c00/0x1c00 [ 52.070250] __netif_receive_skb_one_core+0x115/0x1a0 [ 52.075422] ? __netif_receive_skb_core+0x3010/0x3010 [ 52.080649] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.086175] ? check_preemption_disabled+0x48/0x290 [ 52.091192] ? lock_acquire+0x16f/0x3f0 [ 52.095156] __netif_receive_skb+0x2c/0x1c0 [ 52.099459] netif_receive_skb_internal+0x117/0x660 [ 52.104456] ? dev_cpu_dead+0x920/0x920 [ 52.108412] ? eth_gro_receive+0x890/0x890 [ 52.112631] napi_gro_frags+0xade/0xd10 [ 52.116591] tun_get_user+0x2c0e/0x3dd0 [ 52.120550] ? tun_build_skb.isra.0+0x1150/0x1150 [ 52.125373] ? tun_get+0x171/0x290 [ 52.128897] ? lock_downgrade+0x810/0x810 [ 52.133042] ? kasan_check_read+0x11/0x20 [ 52.137172] tun_chr_write_iter+0xbd/0x160 [ 52.141396] do_iter_readv_writev+0x5e0/0x8e0 [ 52.145919] ? vfs_dedupe_file_range+0x780/0x780 [ 52.150656] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 52.156176] ? rw_verify_area+0x118/0x360 [ 52.160315] do_iter_write+0x184/0x610 [ 52.164192] ? dup_iter+0x260/0x260 [ 52.167809] vfs_writev+0x1b3/0x2f0 [ 52.171418] ? vfs_iter_write+0xb0/0xb0 [ 52.175387] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.180920] ? __handle_mm_fault+0x7cd/0x3f20 [ 52.185397] ? vmf_insert_mixed_mkwrite+0x40/0x40 [ 52.190227] ? find_held_lock+0x35/0x130 [ 52.194282] ? __do_page_fault+0x610/0xd60 [ 52.198503] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.204020] ? __fget_light+0x1a9/0x230 [ 52.207986] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 52.213501] do_writev+0xf6/0x290 [ 52.216937] ? vfs_writev+0x2f0/0x2f0 [ 52.220721] ? do_syscall_64+0x26/0x610 [ 52.224680] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 52.230027] ? do_syscall_64+0x26/0x610 [ 52.233985] __x64_sys_writev+0x75/0xb0 [ 52.237941] do_syscall_64+0x103/0x610 [ 52.241813] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 52.246984] RIP: 0033:0x442000 [ 52.250157] 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 [ 52.269043] RSP: 002b:00007ffede139c18 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 52.276841] RAX: ffffffffffffffda RBX: 00007ffede139c60 RCX: 0000000000442000 [ 52.284090] RDX: 0000000000000001 RSI: 00007ffede139c60 RDI: 00000000000000f0 [ 52.291340] RBP: 0000000000000003 R08: 000000000000bbff R09: 0000000000000000 [ 52.298606] R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffede139c30 [ 52.305858] R13: 0000000000403430 R14: 0000000000000000 R15: 0000000000000000 [ 52.313139] Modules linked in: [ 52.316383] ---[ end trace f3b4aae95ee05820 ]--- [ 52.321175] RIP: 0010:xfrmi_decode_session+0x15c/0x6c0 [ 52.326481] 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 [ 52.345408] RSP: 0018:ffff888099337018 EFLAGS: 00010246 [ 52.350783] RAX: dffffc0000000000 RBX: ffff8880828fbb80 RCX: ffffffff86026003 [ 52.358079] RDX: 0000000000000000 RSI: ffffffff86026040 RDI: ffff8880806a6f08 [ 52.365363] RBP: ffff888099337040 R08: ffff88808671c400 R09: ffffed1015d05bd0 [ 52.372648] R10: ffffed1015d05bcf R11: ffff8880ae82de7b R12: 0000000000000000 [ 52.379929] R13: 0000000000000037 R14: ffff8880828fbb90 R15: ffffffffffffffff [ 52.387246] FS: 0000000000c26880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 52.395484] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 52.401379] CR2: 0000000020200000 CR3: 00000000a68d4000 CR4: 00000000001406f0 [ 52.408648] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 52.415939] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 52.423229] Kernel panic - not syncing: Fatal exception in interrupt [ 52.430760] Kernel Offset: disabled [ 52.434384] Rebooting in 86400 seconds..