[ 48.534963] audit: type=1800 audit(1579142453.330:30): pid=8129 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: [ 54.332189] kauditd_printk_skb: 4 callbacks suppressed [ 54.332205] audit: type=1400 audit(1579142459.170:35): avc: denied { map } for pid=8302 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 '10.128.10.3' (ECDSA) to the list of known hosts. executing program [ 61.236010] audit: type=1400 audit(1579142466.070:36): avc: denied { map } for pid=8314 comm="syz-executor203" path="/root/syz-executor203074776" 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 [ 61.241911] kasan: CONFIG_KASAN_INLINE enabled [ 61.262428] audit: type=1400 audit(1579142466.070:37): avc: denied { create } for pid=8314 comm="syz-executor203" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1 [ 61.262452] audit: type=1400 audit(1579142466.070:38): avc: denied { write } for pid=8314 comm="syz-executor203" scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tclass=netlink_netfilter_socket permissive=1 [ 61.316421] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 61.324489] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 61.331058] CPU: 1 PID: 8314 Comm: syz-executor203 Not tainted 4.19.96-syzkaller #0 [ 61.338849] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.348241] RIP: 0010:nft_tunnel_get_init+0x67/0x200 [ 61.353395] Code: 00 00 49 8b 5c 24 08 48 85 db 0f 84 2c 01 00 00 e8 ce fa 64 fb 48 8d 7b 04 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 42 [ 61.372469] RSP: 0018:ffff8880972ff448 EFLAGS: 00010247 [ 61.377845] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff86016730 [ 61.385459] RDX: 0000000000000000 RSI: ffffffff86061af2 RDI: 0000000000000004 [ 61.392745] RBP: ffff8880972ff478 R08: ffff888095a96500 R09: ffffed1015d04733 [ 61.400099] R10: ffffed1015d04732 R11: ffff8880ae823993 R12: ffff8880961f0bc8 [ 61.407392] R13: ffff88808c405418 R14: ffff8880972ff548 R15: 0000000000000000 [ 61.414664] FS: 0000000002477880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 61.423040] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 61.429047] CR2: 000055cfd5fb91b0 CR3: 0000000088ada000 CR4: 00000000001406e0 [ 61.436916] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 61.444197] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 61.451631] Call Trace: [ 61.454495] ? nft_tunnel_get_dump+0x190/0x190 [ 61.459078] nf_tables_newrule+0xd90/0x2140 [ 61.463527] ? nf_tables_delchain+0x8d0/0x8d0 [ 61.468200] ? __mutex_unlock_slowpath+0xf8/0x6b0 [ 61.473080] ? rcu_read_lock_sched_held+0x110/0x130 [ 61.478091] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 61.483291] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 61.488301] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 61.494026] ? nla_parse+0x1fc/0x2f0 [ 61.497915] nfnetlink_rcv_batch+0xef6/0x1750 [ 61.502409] ? nf_tables_delchain+0x8d0/0x8d0 [ 61.507020] ? nfnl_err_del+0x170/0x170 [ 61.511029] ? cred_has_capability+0x193/0x320 [ 61.515640] ? selinux_capable+0x36/0x40 [ 61.519967] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 61.525509] ? security_capable+0x92/0xc0 [ 61.529821] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 61.535603] ? ns_capable_common+0x141/0x170 [ 61.540018] ? memset+0x32/0x40 [ 61.543291] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 61.548831] ? nla_parse+0x1fc/0x2f0 [ 61.552560] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 61.557763] nfnetlink_rcv+0x3ed/0x460 [ 61.561783] ? nfnetlink_rcv_batch+0x1750/0x1750 [ 61.566674] ? netlink_deliver_tap+0x254/0xc20 [ 61.571268] ? kasan_check_write+0x14/0x20 [ 61.575515] netlink_unicast+0x53a/0x730 [ 61.579595] ? netlink_attachskb+0x770/0x770 [ 61.584309] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 61.590048] netlink_sendmsg+0x8ae/0xd70 [ 61.594231] ? netlink_unicast+0x730/0x730 [ 61.598554] ? selinux_socket_sendmsg+0x36/0x40 [ 61.603391] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 61.609737] ? security_socket_sendmsg+0x8d/0xc0 [ 61.614630] ? netlink_unicast+0x730/0x730 [ 61.618896] sock_sendmsg+0xd7/0x130 [ 61.622612] ___sys_sendmsg+0x803/0x920 [ 61.626626] ? copy_msghdr_from_user+0x430/0x430 [ 61.631386] ? rcu_read_lock_sched_held+0x110/0x130 [ 61.636628] ? mark_held_locks+0x100/0x100 [ 61.640937] ? __this_cpu_preempt_check+0x1d/0x30 [ 61.645827] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 61.651995] ? percpu_counter_add_batch+0x13c/0x190 [ 61.657141] ? __fd_install+0x1bc/0x640 [ 61.661156] ? find_held_lock+0x35/0x130 [ 61.665234] ? __fd_install+0x1bc/0x640 [ 61.669346] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 61.675009] ? __fget_light+0x1a9/0x230 [ 61.678991] ? __fdget+0x1b/0x20 [ 61.682385] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 61.688235] __sys_sendmsg+0x105/0x1d0 [ 61.692141] ? __ia32_sys_shutdown+0x80/0x80 [ 61.696581] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 61.701372] ? do_syscall_64+0x26/0x620 [ 61.705388] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 61.710817] ? do_syscall_64+0x26/0x620 [ 61.714831] __x64_sys_sendmsg+0x78/0xb0 [ 61.718929] do_syscall_64+0xfd/0x620 [ 61.722733] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 61.727984] RIP: 0033:0x4407b9 [ 61.731181] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 61.750218] RSP: 002b:00007ffd2d136548 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 61.758192] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004407b9 [ 61.765780] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000004 [ 61.773187] RBP: 00000000006ca018 R08: 0000000000000001 R09: 00000000004002c8 [ 61.780706] R10: 0000000000000011 R11: 0000000000000246 R12: 0000000000402040 [ 61.787983] R13: 00000000004020d0 R14: 0000000000000000 R15: 0000000000000000 [ 61.795467] Modules linked in: [ 61.799844] ---[ end trace 5b6cf3ed4c82f7b9 ]--- [ 61.804666] RIP: 0010:nft_tunnel_get_init+0x67/0x200 [ 61.809865] Code: 00 00 49 8b 5c 24 08 48 85 db 0f 84 2c 01 00 00 e8 ce fa 64 fb 48 8d 7b 04 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 42 [ 61.829200] RSP: 0018:ffff8880972ff448 EFLAGS: 00010247 [ 61.834598] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff86016730 [ 61.841977] RDX: 0000000000000000 RSI: ffffffff86061af2 RDI: 0000000000000004 [ 61.849318] RBP: ffff8880972ff478 R08: ffff888095a96500 R09: ffffed1015d04733 [ 61.856775] R10: ffffed1015d04732 R11: ffff8880ae823993 R12: ffff8880961f0bc8 [ 61.864279] R13: ffff88808c405418 R14: ffff8880972ff548 R15: 0000000000000000 [ 61.871767] FS: 0000000002477880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 61.880054] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 61.885961] CR2: 000055cfd5fb91b0 CR3: 0000000088ada000 CR4: 00000000001406e0 [ 61.893331] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 61.900784] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 61.908146] Kernel panic - not syncing: Fatal exception [ 61.915265] Kernel Offset: disabled [ 61.918940] Rebooting in 86400 seconds..