[ 40.411068] audit: type=1800 audit(1564924521.096:30): pid=7582 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:kernel_t:s0 op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2490 res=0 Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 45.997131] kauditd_printk_skb: 4 callbacks suppressed [ 45.997146] audit: type=1400 audit(1564924526.716:35): avc: denied { map } for pid=7756 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 '10.128.0.71' (ECDSA) to the list of known hosts. [ 60.989982] audit: type=1400 audit(1564924541.706:36): avc: denied { map } for pid=7768 comm="syz-executor458" path="/root/syz-executor458338398" 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 [ 61.002293] IPVS: ftp: loaded support on port[0] = 21 [ 61.072023] chnl_net:caif_netlink_parms(): no params data found [ 61.099551] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.106475] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.113622] device bridge_slave_0 entered promiscuous mode [ 61.129719] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.136230] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.143214] device bridge_slave_1 entered promiscuous mode [ 61.158929] bond0: Enslaving bond_slave_0 as an active interface with an up link [ 61.167970] bond0: Enslaving bond_slave_1 as an active interface with an up link [ 61.183571] IPv6: ADDRCONF(NETDEV_UP): team_slave_0: link is not ready [ 61.191217] team0: Port device team_slave_0 added [ 61.196804] IPv6: ADDRCONF(NETDEV_UP): team_slave_1: link is not ready [ 61.204063] team0: Port device team_slave_1 added [ 61.209410] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_0: link is not ready [ 61.216798] IPv6: ADDRCONF(NETDEV_UP): bridge_slave_1: link is not ready [ 61.295696] device hsr_slave_0 entered promiscuous mode [ 61.374036] device hsr_slave_1 entered promiscuous mode [ 61.414680] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_0: link is not ready [ 61.421785] IPv6: ADDRCONF(NETDEV_UP): hsr_slave_1: link is not ready [ 61.436007] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.442461] bridge0: port 2(bridge_slave_1) entered forwarding state [ 61.449505] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.455916] bridge0: port 1(bridge_slave_0) entered forwarding state [ 61.486801] IPv6: ADDRCONF(NETDEV_UP): bond0: link is not ready [ 61.493105] 8021q: adding VLAN 0 to HW filter on device bond0 [ 61.502377] IPv6: ADDRCONF(NETDEV_UP): veth0: link is not ready [ 61.511111] IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready [ 61.530710] bridge0: port 1(bridge_slave_0) entered disabled state [ 61.538343] bridge0: port 2(bridge_slave_1) entered disabled state [ 61.546682] IPv6: ADDRCONF(NETDEV_CHANGE): bond0: link becomes ready [ 61.557342] IPv6: ADDRCONF(NETDEV_UP): team0: link is not ready [ 61.563450] 8021q: adding VLAN 0 to HW filter on device team0 [ 61.572374] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_0: link becomes ready [ 61.580654] bridge0: port 1(bridge_slave_0) entered blocking state [ 61.587076] bridge0: port 1(bridge_slave_0) entered forwarding state [ 61.597717] IPv6: ADDRCONF(NETDEV_CHANGE): bridge_slave_1: link becomes ready [ 61.605681] bridge0: port 2(bridge_slave_1) entered blocking state [ 61.612038] bridge0: port 2(bridge_slave_1) entered forwarding state [ 61.632280] hsr0: Slave A (hsr_slave_0) is not up; please bring it up to get a fully working HSR network [ 61.642678] hsr0: Slave B (hsr_slave_1) is not up; please bring it up to get a fully working HSR network [ 61.654369] IPv6: ADDRCONF(NETDEV_UP): hsr0: link is not ready [ 61.662187] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_0: link becomes ready [ 61.671475] IPv6: ADDRCONF(NETDEV_CHANGE): team_slave_1: link becomes ready [ 61.679941] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_0: link becomes ready executing program [ 61.688108] IPv6: ADDRCONF(NETDEV_CHANGE): hsr_slave_1: link becomes ready [ 61.695888] IPv6: ADDRCONF(NETDEV_CHANGE): hsr0: link becomes ready [ 61.702787] IPv6: ADDRCONF(NETDEV_CHANGE): team0: link becomes ready [ 61.716400] IPv6: ADDRCONF(NETDEV_UP): vxcan1: link is not ready [ 61.727327] 8021q: adding VLAN 0 to HW filter on device batadv0 [ 61.740179] kasan: CONFIG_KASAN_INLINE enabled [ 61.744924] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 61.752401] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 61.758632] CPU: 1 PID: 7769 Comm: syz-executor458 Not tainted 4.19.64 #38 [ 61.765677] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.775132] RIP: 0010:xfrmi_decode_session+0x153/0x78c [ 61.780439] Code: 7c dc 10 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 06 06 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5c dc 10 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 d9 05 00 00 4c 8b 23 e8 db 25 62 fb e8 46 8f 74 [ 61.799647] RSP: 0018:ffff888092867048 EFLAGS: 00010246 [ 61.805023] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff85f6baad [ 61.812290] RDX: 0000000000000000 RSI: ffffffff85f6b59c RDI: ffff8880928f8788 [ 61.821133] RBP: ffff888092867070 R08: ffff88809558c540 R09: ffffed1015d24733 [ 61.828426] R10: ffffed1015d24732 R11: ffff8880ae923993 R12: ffff8880928f8780 [ 61.835691] R13: 0000000000000039 R14: 000000000000000b R15: ffff888094ed8480 [ 61.842958] FS: 0000000001094880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 61.851275] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 61.857144] CR2: 0000000020200000 CR3: 000000007ea9f000 CR4: 00000000001406e0 [ 61.864411] Call Trace: [ 61.867000] __xfrm_policy_check+0x1f6/0x2550 [ 61.871495] ? kasan_check_read+0x11/0x20 [ 61.875630] ? vti6_tnl_lookup+0x287/0x1020 [ 61.880033] ? find_held_lock+0x35/0x130 [ 61.884086] ? __xfrm_route_forward+0x810/0x810 [ 61.888769] ? __lock_is_held+0xb6/0x140 [ 61.892870] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 61.898461] ? vti6_tnl_lookup+0x69a/0x1020 [ 61.902783] ? kasan_check_read+0x11/0x20 [ 61.906934] ? vti6_tnl_xmit+0x1bd0/0x1bd0 [ 61.911306] vti6_rcv+0x4b9/0x931 [ 61.914788] xfrm6_esp_rcv+0xd2/0x230 [ 61.918631] ip6_input_finish+0x36f/0x17c0 [ 61.922867] ip6_input+0xe4/0x3f0 [ 61.926304] ? ip6_input_finish+0x17c0/0x17c0 [ 61.930784] ? ip6_sublist_rcv+0xcf0/0xcf0 [ 61.935016] ? ipv6_chk_mcast_addr+0x2f2/0x6f0 [ 61.939591] ip6_mc_input+0x427/0xad9 [ 61.943385] ? ipv6_list_rcv+0x4c0/0x4c0 [ 61.947592] ip6_rcv_finish+0x1de/0x2f0 [ 61.951594] ipv6_rcv+0x119/0x430 [ 61.955048] ? ip6_rcv_core.isra.0+0x1ac0/0x1ac0 [ 61.959940] ? ip6_rcv_finish_core.isra.0+0x560/0x560 [ 61.965131] ? ip6_rcv_core.isra.0+0x1ac0/0x1ac0 [ 61.970003] __netif_receive_skb_one_core+0x113/0x1a0 [ 61.975193] ? __netif_receive_skb_core+0x3570/0x3570 [ 61.980758] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 61.986345] ? check_preemption_disabled+0x48/0x290 [ 61.991355] ? lock_acquire+0x16f/0x3f0 [ 61.995756] __netif_receive_skb+0x2c/0x1d0 [ 62.000071] netif_receive_skb_internal+0x117/0x700 [ 62.005089] ? __sanitizer_cov_trace_const_cmp2+0x18/0x20 [ 62.010630] ? dev_cpu_dead+0x920/0x920 [ 62.014598] ? eth_gro_receive+0x8a0/0x8a0 [ 62.018861] napi_gro_frags+0x602/0xa20 [ 62.022824] tun_get_user+0x2ed8/0x4ba0 [ 62.026782] ? mark_held_locks+0x100/0x100 [ 62.031785] ? tun_build_skb.isra.0+0x1910/0x1910 [ 62.036733] ? tun_get+0x171/0x290 [ 62.040265] ? lock_downgrade+0x810/0x810 [ 62.044412] ? kasan_check_read+0x11/0x20 [ 62.048560] tun_chr_write_iter+0xbd/0x156 [ 62.052823] do_iter_readv_writev+0x558/0x830 [ 62.057436] ? vfs_dedupe_file_range+0x6f0/0x6f0 [ 62.062189] ? security_file_permission+0x89/0x230 [ 62.067254] ? rw_verify_area+0x118/0x360 [ 62.071403] do_iter_write+0x184/0x5f0 [ 62.075412] ? dup_iter+0x270/0x270 [ 62.079035] vfs_writev+0x1b3/0x2f0 [ 62.082795] ? vfs_iter_write+0xb0/0xb0 [ 62.086770] ? vmf_insert_mixed_mkwrite+0x90/0x90 [ 62.091608] ? __do_page_fault+0x676/0xe90 [ 62.095835] ? lock_downgrade+0x810/0x810 [ 62.099981] ? count_memcg_event_mm+0x2b1/0x4d0 [ 62.104646] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 62.110179] ? __fget_light+0x1a9/0x230 [ 62.114150] do_writev+0x15e/0x370 [ 62.117738] ? vfs_writev+0x2f0/0x2f0 [ 62.121531] ? do_syscall_64+0x26/0x620 [ 62.125556] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 62.130952] ? do_syscall_64+0x26/0x620 [ 62.134924] __x64_sys_writev+0x75/0xb0 [ 62.138890] do_syscall_64+0xfd/0x620 [ 62.142684] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 62.148037] RIP: 0033:0x441e70 [ 62.151222] Code: 05 48 3d 01 f0 ff ff 0f 83 fd 0e fc ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 83 3d a1 91 29 00 00 75 14 b8 14 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 d4 0e fc ff c3 48 83 ec 08 e8 7a 2b 00 00 [ 62.170384] RSP: 002b:00007ffda3450de8 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 [ 62.178391] RAX: ffffffffffffffda RBX: 00007ffda3450e30 RCX: 0000000000441e70 [ 62.185700] RDX: 0000000000000001 RSI: 00007ffda3450e30 RDI: 00000000000000f0 [ 62.193053] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 62.200354] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 62.207614] R13: 0000000000403260 R14: 0000000000000000 R15: 0000000000000000 [ 62.214878] Modules linked in: [ 62.218139] ---[ end trace e405971dbdb65551 ]--- [ 62.222907] RIP: 0010:xfrmi_decode_session+0x153/0x78c [ 62.228250] Code: 7c dc 10 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 06 06 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b 5c dc 10 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 d9 05 00 00 4c 8b 23 e8 db 25 62 fb e8 46 8f 74 [ 62.247587] RSP: 0018:ffff888092867048 EFLAGS: 00010246 [ 62.253034] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff85f6baad [ 62.261601] RDX: 0000000000000000 RSI: ffffffff85f6b59c RDI: ffff8880928f8788 [ 62.270524] RBP: ffff888092867070 R08: ffff88809558c540 R09: ffffed1015d24733 [ 62.277848] R10: ffffed1015d24732 R11: ffff8880ae923993 R12: ffff8880928f8780 [ 62.285245] R13: 0000000000000039 R14: 000000000000000b R15: ffff888094ed8480 [ 62.293122] FS: 0000000001094880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 62.301693] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 62.307626] CR2: 0000000020200000 CR3: 000000007ea9f000 CR4: 00000000001406e0 [ 62.315014] Kernel panic - not syncing: Fatal exception in interrupt [ 62.322459] Kernel Offset: disabled [ 62.326121] Rebooting in 86400 seconds..