[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [ 87.688018][ T26] kauditd_printk_skb: 4 callbacks suppressed [ 87.688029][ T26] audit: type=1800 audit(1579147994.079:29): pid=9602 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 87.714928][ T26] audit: type=1800 audit(1579147994.079:30): pid=9602 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.221' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 98.420402][ T9756] netlink: 760 bytes leftover after parsing attributes in process `syz-executor337'. [ 98.450980][ T9756] ------------[ cut here ]------------ [ 98.456470][ T9756] truncated: 'nft-expr-0-LMMR~*{F DcHc(?V' (len 209) [ 98.456835][ T9756] WARNING: CPU: 1 PID: 9756 at net/netfilter/nf_tables_api.c:588 nft_request_module+0x189/0x1a0 [ 98.476309][ T9756] Kernel panic - not syncing: panic_on_warn set ... [ 98.482889][ T9756] CPU: 1 PID: 9756 Comm: syz-executor337 Not tainted 5.5.0-rc6-syzkaller #0 [ 98.491624][ T9756] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 98.501657][ T9756] Call Trace: [ 98.504930][ T9756] dump_stack+0x197/0x210 [ 98.509250][ T9756] ? nft_request_module+0x110/0x1a0 [ 98.514459][ T9756] panic+0x2e3/0x75c [ 98.518345][ T9756] ? add_taint.cold+0x16/0x16 [ 98.523010][ T9756] ? __kasan_check_write+0x14/0x20 [ 98.528097][ T9756] ? __warn.cold+0x14/0x3e [ 98.532490][ T9756] ? __warn+0xd9/0x1cf [ 98.536546][ T9756] ? nft_request_module+0x189/0x1a0 [ 98.541719][ T9756] __warn.cold+0x2f/0x3e [ 98.546016][ T9756] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 98.551739][ T9756] ? nft_request_module+0x189/0x1a0 [ 98.556918][ T9756] report_bug+0x289/0x300 [ 98.561261][ T9756] do_error_trap+0x11b/0x200 [ 98.565837][ T9756] do_invalid_op+0x37/0x50 [ 98.570230][ T9756] ? nft_request_module+0x189/0x1a0 [ 98.575529][ T9756] invalid_op+0x23/0x30 [ 98.579669][ T9756] RIP: 0010:nft_request_module+0x189/0x1a0 [ 98.585459][ T9756] 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 [ 98.605045][ T9756] RSP: 0018:ffffc900020b7178 EFLAGS: 00010282 [ 98.611092][ T9756] RAX: 0000000000000000 RBX: ffffffff8a4c62c0 RCX: 0000000000000000 [ 98.619135][ T9756] RDX: 0000000000000000 RSI: ffffffff815e5396 RDI: fffff52000416e21 [ 98.627103][ T9756] RBP: ffffc900020b72a0 R08: ffff8880a147c540 R09: fffffbfff165e7b2 [ 98.635834][ T9756] R10: fffffbfff165e7b1 R11: ffffffff8b2f3d8f R12: 1ffff92000416e2f [ 98.644204][ T9756] R13: 00000000000000d1 R14: ffffffff8a4c62c0 R15: ffffc900020b7390 [ 98.652205][ T9756] ? vprintk_func+0x86/0x189 [ 98.656794][ T9756] ? nft_request_module+0x189/0x1a0 [ 98.661978][ T9756] ? __nf_tables_abort+0x2a50/0x2a50 [ 98.667241][ T9756] ? __nla_validate_parse+0x2d0/0x1ee0 [ 98.672716][ T9756] nft_expr_type_request_module+0x65/0xb0 [ 98.678424][ T9756] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 98.684678][ T9756] nf_tables_expr_parse+0x4e4/0x6b0 [ 98.689865][ T9756] ? nft_expr_type_request_module+0xb0/0xb0 [ 98.695747][ T9756] ? kasan_kmalloc+0x9/0x10 [ 98.700238][ T9756] ? __kmalloc_node+0x4e/0x70 [ 98.704898][ T9756] nf_tables_newrule+0x72b/0x2400 [ 98.709906][ T9756] ? nf_tables_abort+0x30/0x30 [ 98.714748][ T9756] ? nla_memcpy+0xb0/0xb0 [ 98.719059][ T9756] ? __nla_parse+0x43/0x60 [ 98.723471][ T9756] nfnetlink_rcv_batch+0xf42/0x17a0 [ 98.728649][ T9756] ? nf_tables_abort+0x30/0x30 [ 98.733443][ T9756] ? nfnetlink_subsys_register+0x2b0/0x2b0 [ 98.739262][ T9756] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 98.745502][ T9756] ? apparmor_capable+0x497/0x900 [ 98.750518][ T9756] ? __nla_validate_parse+0x2d0/0x1ee0 [ 98.755963][ T9756] ? cap_capable+0x205/0x270 [ 98.761095][ T9756] ? nla_memcpy+0xb0/0xb0 [ 98.765426][ T9756] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 98.771659][ T9756] ? ns_capable_common+0x93/0x100 [ 98.776845][ T9756] ? __nla_parse+0x43/0x60 [ 98.781257][ T9756] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 98.786964][ T9756] nfnetlink_rcv+0x3e7/0x460 [ 98.791546][ T9756] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 98.796997][ T9756] ? netlink_deliver_tap+0x24a/0xbe0 [ 98.802274][ T9756] ? __kasan_check_write+0x14/0x20 [ 98.807386][ T9756] netlink_unicast+0x58c/0x7d0 [ 98.812132][ T9756] ? netlink_attachskb+0x870/0x870 [ 98.817233][ T9756] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 98.822929][ T9756] ? __check_object_size+0x3d/0x437 [ 98.828105][ T9756] netlink_sendmsg+0x91c/0xea0 [ 98.832852][ T9756] ? netlink_unicast+0x7d0/0x7d0 [ 98.837779][ T9756] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 98.843308][ T9756] ? apparmor_socket_sendmsg+0x2a/0x30 [ 98.848761][ T9756] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 98.854999][ T9756] ? security_socket_sendmsg+0x8d/0xc0 [ 98.860437][ T9756] ? netlink_unicast+0x7d0/0x7d0 [ 98.865370][ T9756] sock_sendmsg+0xd7/0x130 [ 98.869775][ T9756] ____sys_sendmsg+0x753/0x880 [ 98.874707][ T9756] ? kernel_sendmsg+0x50/0x50 [ 98.879367][ T9756] ? lockdep_init_map+0x1be/0x6d0 [ 98.884394][ T9756] ___sys_sendmsg+0x100/0x170 [ 98.889068][ T9756] ? sendmsg_copy_msghdr+0x70/0x70 [ 98.894166][ T9756] ? __kasan_check_read+0x11/0x20 [ 98.899232][ T9756] ? __lock_acquire+0x8a0/0x4a00 [ 98.904164][ T9756] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 98.910385][ T9756] ? __this_cpu_preempt_check+0x35/0x190 [ 98.916008][ T9756] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 98.922236][ T9756] ? percpu_counter_add_batch+0x13c/0x190 [ 98.928005][ T9756] ? __fd_install+0x1bc/0x640 [ 98.932668][ T9756] ? find_held_lock+0x35/0x130 [ 98.937426][ T9756] ? __fd_install+0x1bc/0x640 [ 98.942179][ T9756] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 98.948415][ T9756] ? __fget_light+0x1a9/0x230 [ 98.953600][ T9756] ? __fdget+0x1b/0x20 [ 98.957657][ T9756] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 98.963899][ T9756] __sys_sendmsg+0x105/0x1d0 [ 98.968494][ T9756] ? __sys_sendmsg_sock+0xc0/0xc0 [ 98.973523][ T9756] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 98.978968][ T9756] ? do_fast_syscall_32+0xd1/0xe16 [ 98.984110][ T9756] ? entry_SYSENTER_compat+0x70/0x7f [ 98.989388][ T9756] ? do_fast_syscall_32+0xd1/0xe16 [ 98.994651][ T9756] __ia32_compat_sys_sendmsg+0x7a/0xb0 [ 99.000112][ T9756] do_fast_syscall_32+0x27b/0xe16 [ 99.005131][ T9756] entry_SYSENTER_compat+0x70/0x7f [ 99.010255][ T9756] RIP: 0023:0xf7feea39 [ 99.014333][ T9756] Code: 00 00 00 89 d3 5b 5e 5f 5d c3 b8 80 96 98 00 eb c4 8b 04 24 c3 8b 1c 24 c3 8b 34 24 c3 8b 3c 24 c3 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 99.033928][ T9756] RSP: 002b:00000000ffd2ae5c EFLAGS: 00000246 ORIG_RAX: 0000000000000172 [ 99.042329][ T9756] RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000020000240 [ 99.050314][ T9756] RDX: 0000000000000000 RSI: 00000000080eb00c RDI: 0000000000000000 [ 99.058269][ T9756] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 99.066226][ T9756] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 99.074188][ T9756] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 99.083709][ T9756] Kernel Offset: disabled [ 99.088088][ T9756] Rebooting in 86400 seconds..