[ 42.826544] audit: type=1800 audit(1579949244.495:31): pid=7903 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=2469 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: [ 46.900483] kauditd_printk_skb: 3 callbacks suppressed [ 46.900500] audit: type=1400 audit(1579949248.625:35): avc: denied { map } for pid=8076 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 '10.128.0.178' (ECDSA) to the list of known hosts. executing program [ 53.750827] audit: type=1400 audit(1579949255.475:36): avc: denied { map } for pid=8088 comm="syz-executor093" path="/root/syz-executor093465145" 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 [ 53.754591] kasan: CONFIG_KASAN_INLINE enabled [ 53.777469] audit: type=1400 audit(1579949255.475:37): avc: denied { create } for pid=8088 comm="syz-executor093" 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 [ 53.782377] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 53.806617] audit: type=1400 audit(1579949255.475:38): avc: denied { write } for pid=8088 comm="syz-executor093" 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 [ 53.814300] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 53.844121] CPU: 1 PID: 8088 Comm: syz-executor093 Not tainted 4.19.98-syzkaller #0 [ 53.851907] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.861269] RIP: 0010:nfnetlink_parse_nat_setup+0x252/0x450 [ 53.867136] Code: 38 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 ed 01 00 00 48 8b b5 e8 fe ff ff 48 8b bd e0 fe ff ff <41> ff 57 38 31 ff 89 c3 89 c6 e8 af 5c 6d fb 85 db 0f 88 44 01 00 [ 53.886717] RSP: 0018:ffff88808cae7148 EFLAGS: 00010246 [ 53.892159] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff85fdb9f8 [ 53.899543] RDX: 1ffffffff0c07a8b RSI: ffff88808cae7180 RDI: ffff88808cae71d0 [ 53.906956] RBP: ffff88808cae7268 R08: ffff8880965d0240 R09: ffff88808cae71d0 [ 53.914221] R10: ffffed101195ce3f R11: ffff88808cae71ff R12: ffff88808f1a7180 [ 53.921483] R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8603d420 [ 53.928749] FS: 000000000252f880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 53.937072] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 53.942944] CR2: 00005623fc5bb190 CR3: 000000008bccc000 CR4: 00000000001406e0 [ 53.950238] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 53.957556] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 53.964809] Call Trace: [ 53.967391] ? nf_nat_inet_fn+0x8b0/0x8b0 [ 53.971543] ctnetlink_parse_nat_setup+0xc5/0x660 [ 53.976381] ctnetlink_create_conntrack+0x4ea/0x1300 [ 53.981520] ? ctnetlink_dump_table+0x12e0/0x12e0 [ 53.986360] ? __nf_conntrack_confirm+0x31e0/0x31e0 [ 53.991370] ctnetlink_new_conntrack+0x527/0xe50 [ 53.996186] ? ctnetlink_create_conntrack+0x1300/0x1300 [ 54.001554] ? find_held_lock+0x35/0x130 [ 54.005624] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 54.010814] ? ctnetlink_create_conntrack+0x1300/0x1300 [ 54.016173] nfnetlink_rcv_msg+0xd0d/0xfcf [ 54.020420] ? nfnetlink_bind+0x2c0/0x2c0 [ 54.024567] ? avc_has_extended_perms+0x10f0/0x10f0 [ 54.029623] ? __save_stack_trace+0x99/0x100 [ 54.034093] ? selinux_ipv4_output+0x50/0x50 [ 54.038497] ? netlink_sendmsg+0x97b/0xd70 [ 54.042738] ? mark_held_locks+0x100/0x100 [ 54.046964] netlink_rcv_skb+0x17d/0x460 [ 54.051020] ? nfnetlink_bind+0x2c0/0x2c0 [ 54.055157] ? netlink_ack+0xb30/0xb30 [ 54.059049] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 54.064612] ? ns_capable_common+0x93/0x100 [ 54.068932] ? ns_capable+0x20/0x30 [ 54.072549] ? __netlink_ns_capable+0x104/0x140 [ 54.077218] nfnetlink_rcv+0x1c0/0x460 [ 54.081105] ? nfnetlink_rcv_batch+0x1750/0x1750 [ 54.085875] ? netlink_deliver_tap+0x254/0xc20 [ 54.090455] ? kasan_check_write+0x14/0x20 [ 54.094687] netlink_unicast+0x53a/0x730 [ 54.098803] ? netlink_attachskb+0x770/0x770 [ 54.103210] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 54.108748] netlink_sendmsg+0x8ae/0xd70 [ 54.112807] ? netlink_unicast+0x730/0x730 [ 54.117149] ? selinux_socket_sendmsg+0x36/0x40 [ 54.121812] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 54.127344] ? security_socket_sendmsg+0x8d/0xc0 [ 54.132197] ? netlink_unicast+0x730/0x730 [ 54.136426] sock_sendmsg+0xd7/0x130 [ 54.140128] ___sys_sendmsg+0x803/0x920 [ 54.144096] ? copy_msghdr_from_user+0x430/0x430 [ 54.148845] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 54.154376] ? __handle_mm_fault+0x7d1/0x3f80 [ 54.158858] ? copy_page_range+0x2030/0x2030 [ 54.163259] ? __do_page_fault+0x676/0xe90 [ 54.167491] ? find_held_lock+0x35/0x130 [ 54.171552] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 54.177084] ? __fget_light+0x1a9/0x230 [ 54.181064] ? __fdget+0x1b/0x20 [ 54.184426] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 54.189960] __sys_sendmsg+0x105/0x1d0 [ 54.193841] ? __ia32_sys_shutdown+0x80/0x80 [ 54.198245] ? up_read+0x1a/0x110 [ 54.201703] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 54.206508] ? do_syscall_64+0x26/0x620 [ 54.210474] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 54.215903] ? do_syscall_64+0x26/0x620 [ 54.219873] __x64_sys_sendmsg+0x78/0xb0 [ 54.224030] do_syscall_64+0xfd/0x620 [ 54.227832] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 54.233011] RIP: 0033:0x440259 [ 54.236194] 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 [ 54.255088] RSP: 002b:00007ffdfd203dd8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 54.262978] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440259 [ 54.270238] RDX: 0000000000000000 RSI: 0000000020000280 RDI: 0000000000000003 [ 54.277695] RBP: 00000000006ca018 R08: 0000000000000000 R09: 00000000004002c8 [ 54.284978] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000401ae0 [ 54.292353] R13: 0000000000401b70 R14: 0000000000000000 R15: 0000000000000000 [ 54.299645] Modules linked in: [ 54.303095] ---[ end trace abe1bfc46405f8c0 ]--- [ 54.307898] RIP: 0010:nfnetlink_parse_nat_setup+0x252/0x450 [ 54.313717] Code: 38 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 ed 01 00 00 48 8b b5 e8 fe ff ff 48 8b bd e0 fe ff ff <41> ff 57 38 31 ff 89 c3 89 c6 e8 af 5c 6d fb 85 db 0f 88 44 01 00 [ 54.332772] RSP: 0018:ffff88808cae7148 EFLAGS: 00010246 [ 54.338167] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff85fdb9f8 [ 54.345516] RDX: 1ffffffff0c07a8b RSI: ffff88808cae7180 RDI: ffff88808cae71d0 [ 54.352844] RBP: ffff88808cae7268 R08: ffff8880965d0240 R09: ffff88808cae71d0 [ 54.360161] R10: ffffed101195ce3f R11: ffff88808cae71ff R12: ffff88808f1a7180 [ 54.367465] R13: 0000000000000000 R14: 0000000000000001 R15: ffffffff8603d420 [ 54.374735] FS: 000000000252f880(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 [ 54.383000] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 54.389020] CR2: 00005623fc5bb190 CR3: 000000008bccc000 CR4: 00000000001406e0 [ 54.396356] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 54.403756] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 54.411061] Kernel panic - not syncing: Fatal exception [ 54.417939] Kernel Offset: disabled [ 54.421568] Rebooting in 86400 seconds..