[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 79.886375][ T26] audit: type=1800 audit(1579134486.756:25): pid=9447 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 79.906360][ T26] audit: type=1800 audit(1579134486.756:26): pid=9447 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 79.928416][ T26] audit: type=1800 audit(1579134486.756:27): pid=9447 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 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. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.189' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 90.992358][ T9601] netlink: 760 bytes leftover after parsing attributes in process `syz-executor633'. [ 91.049788][ T9601] ------------[ cut here ]------------ [ 91.055318][ T9601] truncated: 'nft-expr-0-LMMR~*{F DcHc(?V' (len 209) [ 91.055703][ T9601] WARNING: CPU: 0 PID: 9601 at net/netfilter/nf_tables_api.c:588 nft_request_module+0x189/0x1a0 [ 91.075309][ T9601] Kernel panic - not syncing: panic_on_warn set ... [ 91.081896][ T9601] CPU: 0 PID: 9601 Comm: syz-executor633 Not tainted 5.5.0-rc6-syzkaller #0 [ 91.090602][ T9601] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 91.100650][ T9601] Call Trace: [ 91.104008][ T9601] dump_stack+0x197/0x210 [ 91.108367][ T9601] ? nft_request_module+0x110/0x1a0 [ 91.113572][ T9601] panic+0x2e3/0x75c [ 91.117462][ T9601] ? add_taint.cold+0x16/0x16 [ 91.122133][ T9601] ? __kasan_check_write+0x14/0x20 [ 91.127239][ T9601] ? __warn.cold+0x14/0x3e [ 91.131648][ T9601] ? __warn+0xd9/0x1cf [ 91.135708][ T9601] ? nft_request_module+0x189/0x1a0 [ 91.140949][ T9601] __warn.cold+0x2f/0x3e [ 91.145182][ T9601] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 91.150893][ T9601] ? nft_request_module+0x189/0x1a0 [ 91.156143][ T9601] report_bug+0x289/0x300 [ 91.160508][ T9601] do_error_trap+0x11b/0x200 [ 91.165106][ T9601] do_invalid_op+0x37/0x50 [ 91.169518][ T9601] ? nft_request_module+0x189/0x1a0 [ 91.174764][ T9601] invalid_op+0x23/0x30 [ 91.178912][ T9601] RIP: 0010:nft_request_module+0x189/0x1a0 [ 91.184708][ T9601] Code: 00 75 2b 48 81 c4 10 01 00 00 5b 41 5c 41 5d 5d c3 e8 1b 6a 0e fb 44 89 ea 48 c7 c7 e0 7a dc 88 48 8d 74 24 60 e8 a6 19 df fa <0f> 0b eb 9a e8 7e 14 df fa 0f 1f 40 00 66 2e 0f 1f 84 00 00 00 00 [ 91.204301][ T9601] RSP: 0018:ffffc900020b7188 EFLAGS: 00010282 [ 91.210352][ T9601] RAX: 0000000000000000 RBX: ffffffff8a4c62c0 RCX: 0000000000000000 [ 91.218342][ T9601] RDX: 0000000000000000 RSI: ffffffff815e5396 RDI: fffff52000416e23 [ 91.226306][ T9601] RBP: ffffc900020b72b0 R08: ffff8880a4bc64c0 R09: fffffbfff165e7b2 [ 91.234265][ T9601] R10: fffffbfff165e7b1 R11: ffffffff8b2f3d8f R12: 1ffff92000416e31 [ 91.242227][ T9601] R13: 00000000000000d1 R14: ffffffff8a4c62c0 R15: ffffc900020b73a0 [ 91.250212][ T9601] ? vprintk_func+0x86/0x189 [ 91.254784][ T9601] ? nft_request_module+0x189/0x1a0 [ 91.259964][ T9601] ? __nf_tables_abort+0x2a50/0x2a50 [ 91.265229][ T9601] ? __nla_validate_parse+0x2d0/0x1ee0 [ 91.270693][ T9601] nft_expr_type_request_module+0x65/0xb0 [ 91.276393][ T9601] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 91.282620][ T9601] nf_tables_expr_parse+0x4e4/0x6b0 [ 91.287800][ T9601] ? nft_expr_type_request_module+0xb0/0xb0 [ 91.293686][ T9601] ? kasan_kmalloc+0x9/0x10 [ 91.298232][ T9601] ? __kmalloc_node+0x4e/0x70 [ 91.302898][ T9601] nf_tables_newrule+0x72b/0x2400 [ 91.307911][ T9601] ? nf_tables_abort+0x30/0x30 [ 91.312682][ T9601] ? nla_memcpy+0xb0/0xb0 [ 91.317015][ T9601] ? __nla_parse+0x43/0x60 [ 91.321432][ T9601] nfnetlink_rcv_batch+0xf42/0x17a0 [ 91.326670][ T9601] ? nf_tables_abort+0x30/0x30 [ 91.331437][ T9601] ? nfnetlink_subsys_register+0x2b0/0x2b0 [ 91.337248][ T9601] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 91.343471][ T9601] ? apparmor_capable+0x497/0x900 [ 91.348484][ T9601] ? __nla_validate_parse+0x2d0/0x1ee0 [ 91.353942][ T9601] ? cap_capable+0x205/0x270 [ 91.358527][ T9601] ? nla_memcpy+0xb0/0xb0 [ 91.362840][ T9601] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 91.369094][ T9601] ? ns_capable_common+0x93/0x100 [ 91.374101][ T9601] ? __nla_parse+0x43/0x60 [ 91.378499][ T9601] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 91.384237][ T9601] nfnetlink_rcv+0x3e7/0x460 [ 91.388809][ T9601] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 91.394244][ T9601] ? netlink_deliver_tap+0x24a/0xbe0 [ 91.399513][ T9601] ? __kasan_check_write+0x14/0x20 [ 91.404636][ T9601] netlink_unicast+0x58c/0x7d0 [ 91.409455][ T9601] ? netlink_attachskb+0x870/0x870 [ 91.414572][ T9601] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 91.420275][ T9601] ? __check_object_size+0x3d/0x437 [ 91.425461][ T9601] netlink_sendmsg+0x91c/0xea0 [ 91.430558][ T9601] ? netlink_unicast+0x7d0/0x7d0 [ 91.435475][ T9601] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 91.441018][ T9601] ? apparmor_socket_sendmsg+0x2a/0x30 [ 91.446489][ T9601] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 91.452729][ T9601] ? security_socket_sendmsg+0x8d/0xc0 [ 91.458168][ T9601] ? netlink_unicast+0x7d0/0x7d0 [ 91.463096][ T9601] sock_sendmsg+0xd7/0x130 [ 91.467491][ T9601] ____sys_sendmsg+0x753/0x880 [ 91.472233][ T9601] ? kernel_sendmsg+0x50/0x50 [ 91.476886][ T9601] ? lockdep_init_map+0x1be/0x6d0 [ 91.481903][ T9601] ___sys_sendmsg+0x100/0x170 [ 91.486559][ T9601] ? sendmsg_copy_msghdr+0x70/0x70 [ 91.491674][ T9601] ? __kasan_check_read+0x11/0x20 [ 91.496688][ T9601] ? __lock_acquire+0x8a0/0x4a00 [ 91.501612][ T9601] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 91.507831][ T9601] ? __this_cpu_preempt_check+0x35/0x190 [ 91.513441][ T9601] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 91.519745][ T9601] ? percpu_counter_add_batch+0x13c/0x190 [ 91.525453][ T9601] ? __fd_install+0x1bc/0x640 [ 91.530120][ T9601] ? find_held_lock+0x35/0x130 [ 91.534870][ T9601] ? __fd_install+0x1bc/0x640 [ 91.539538][ T9601] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 91.545766][ T9601] ? __fget_light+0x1a9/0x230 [ 91.550423][ T9601] ? __fdget+0x1b/0x20 [ 91.554486][ T9601] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 91.560721][ T9601] __sys_sendmsg+0x105/0x1d0 [ 91.565418][ T9601] ? __sys_sendmsg_sock+0xc0/0xc0 [ 91.570435][ T9601] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 91.575875][ T9601] ? do_syscall_64+0x26/0x790 [ 91.580540][ T9601] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 91.586628][ T9601] ? do_syscall_64+0x26/0x790 [ 91.591300][ T9601] __x64_sys_sendmsg+0x78/0xb0 [ 91.596044][ T9601] do_syscall_64+0xfa/0x790 [ 91.600531][ T9601] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 91.606402][ T9601] RIP: 0033:0x440619 [ 91.610276][ T9601] 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 [ 91.629858][ T9601] RSP: 002b:00007ffea4a58738 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 91.638263][ T9601] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440619 [ 91.646212][ T9601] RDX: 0000000000000000 RSI: 0000000020000240 RDI: 0000000000000005 [ 91.654159][ T9601] RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 [ 91.662108][ T9601] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000401ea0 [ 91.670056][ T9601] R13: 0000000000401f30 R14: 0000000000000000 R15: 0000000000000000 [ 91.679674][ T9601] Kernel Offset: disabled [ 91.684049][ T9601] Rebooting in 86400 seconds..