[ 87.147485][ T27] audit: type=1800 audit(1579977688.158:27): pid=9712 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 87.213716][ T27] audit: type=1800 audit(1579977688.158:28): pid=9712 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 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. [ 88.242295][ T27] audit: type=1800 audit(1579977689.338:29): pid=9712 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 [ 88.264095][ T27] audit: type=1800 audit(1579977689.338:30): pid=9712 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 '10.128.10.59' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 98.825246][ T9867] kasan: CONFIG_KASAN_INLINE enabled [ 98.830880][ T9867] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 98.839038][ T9867] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 98.846015][ T9867] CPU: 1 PID: 9867 Comm: syz-executor557 Not tainted 5.5.0-rc7-syzkaller #0 [ 98.855080][ T9867] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 98.865138][ T9867] RIP: 0010:strlen+0x1f/0xa0 [ 98.869989][ T9867] Code: 00 66 2e 0f 1f 84 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 fa 48 89 e5 48 c1 ea 03 41 54 49 89 fc 53 48 83 ec 08 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 4d 41 80 3c 24 [ 98.889714][ T9867] RSP: 0018:ffffc90002026e80 EFLAGS: 00010282 [ 98.895850][ T9867] RAX: dffffc0000000000 RBX: ffff8880a3aaa718 RCX: 1ffffffff14f6ffe [ 98.903947][ T9867] RDX: 0000000000000062 RSI: ffffffff8673d9a1 RDI: 0000000000000314 [ 98.912318][ T9867] RBP: ffffc90002026e98 R08: ffff8880a32c0200 R09: ffffed10147554e3 [ 98.920451][ T9867] R10: ffffed10147554e2 R11: ffff8880a3aaa717 R12: 0000000000000314 [ 98.928421][ T9867] R13: 0000000000000304 R14: ffff8880a4619700 R15: ffff8880a3aaa700 [ 98.936397][ T9867] FS: 0000000000000000(0000) GS:ffff8880ae900000(0063) knlGS:0000000008431840 [ 98.945468][ T9867] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 98.952270][ T9867] CR2: 0000000020001080 CR3: 000000009cf91000 CR4: 00000000001406e0 [ 98.960346][ T9867] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 98.968337][ T9867] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 98.976339][ T9867] Call Trace: [ 98.979744][ T9867] ip_set_comment_free+0x69/0xe0 [ 98.984836][ T9867] hash_net4_add+0x1b9a/0x2200 [ 98.989645][ T9867] ? write_comp_data+0x51/0x70 [ 98.994449][ T9867] hash_net4_uadt+0x596/0x940 [ 98.999278][ T9867] ? hash_net4_head+0x730/0x730 [ 99.004129][ T9867] ? hash_net6_uadt+0x880/0x880 [ 99.008978][ T9867] call_ad+0x1a0/0x5a0 [ 99.013054][ T9867] ? start_msg+0x220/0x220 [ 99.017455][ T9867] ? nla_memcpy+0xb0/0xb0 [ 99.021859][ T9867] ? __nla_parse+0x43/0x60 [ 99.026329][ T9867] ip_set_ad.isra.0+0x572/0xb20 [ 99.031173][ T9867] ? ip_set_nfnl_get_byindex+0x460/0x460 [ 99.036926][ T9867] ? nla_memcpy+0xb0/0xb0 [ 99.041361][ T9867] ? lock_downgrade+0x920/0x920 [ 99.046214][ T9867] ip_set_uadd+0x37/0x50 [ 99.050445][ T9867] ? ip_set_udel+0x50/0x50 [ 99.054849][ T9867] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 99.059838][ T9867] ? nfnetlink_bind+0x2c0/0x2c0 [ 99.064731][ T9867] ? __kasan_check_read+0x11/0x20 [ 99.069752][ T9867] ? __lock_acquire+0x8a0/0x4a00 [ 99.076855][ T9867] ? save_stack+0x5c/0x90 [ 99.081328][ T9867] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 99.087749][ T9867] ? apparmor_capable+0x497/0x900 [ 99.092775][ T9867] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 99.099003][ T9867] ? __kasan_check_read+0x11/0x20 [ 99.104034][ T9867] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 99.109488][ T9867] netlink_rcv_skb+0x177/0x450 [ 99.114295][ T9867] ? nfnetlink_bind+0x2c0/0x2c0 [ 99.119163][ T9867] ? netlink_ack+0xb50/0xb50 [ 99.123822][ T9867] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 99.130058][ T9867] ? ns_capable_common+0x93/0x100 [ 99.135329][ T9867] ? ns_capable+0x20/0x30 [ 99.139647][ T9867] ? __netlink_ns_capable+0x104/0x140 [ 99.145003][ T9867] nfnetlink_rcv+0x1ba/0x460 [ 99.149692][ T9867] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 99.155241][ T9867] ? netlink_deliver_tap+0x24a/0xbe0 [ 99.160658][ T9867] ? __kasan_check_write+0x14/0x20 [ 99.165756][ T9867] netlink_unicast+0x58c/0x7d0 [ 99.170547][ T9867] ? netlink_attachskb+0x870/0x870 [ 99.175645][ T9867] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 99.183271][ T9867] ? __check_object_size+0x3d/0x437 [ 99.188456][ T9867] netlink_sendmsg+0x91c/0xea0 [ 99.193350][ T9867] ? netlink_unicast+0x7d0/0x7d0 [ 99.198277][ T9867] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 99.203949][ T9867] ? apparmor_socket_sendmsg+0x2a/0x30 [ 99.209453][ T9867] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 99.215865][ T9867] ? security_socket_sendmsg+0x8d/0xc0 [ 99.221403][ T9867] ? netlink_unicast+0x7d0/0x7d0 [ 99.226463][ T9867] sock_sendmsg+0xd7/0x130 [ 99.230996][ T9867] ____sys_sendmsg+0x753/0x880 [ 99.235750][ T9867] ? kernel_sendmsg+0x50/0x50 [ 99.240465][ T9867] ? lockdep_init_map+0x1be/0x6d0 [ 99.245674][ T9867] ___sys_sendmsg+0x100/0x170 [ 99.250489][ T9867] ? sendmsg_copy_msghdr+0x70/0x70 [ 99.255626][ T9867] ? __kasan_check_read+0x11/0x20 [ 99.261074][ T9867] ? __lock_acquire+0x8a0/0x4a00 [ 99.266266][ T9867] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 99.272665][ T9867] ? __this_cpu_preempt_check+0x35/0x190 [ 99.278289][ T9867] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 99.284671][ T9867] ? percpu_counter_add_batch+0x13c/0x190 [ 99.290406][ T9867] ? __fd_install+0x1bc/0x640 [ 99.295221][ T9867] ? find_held_lock+0x35/0x130 [ 99.299979][ T9867] ? __fd_install+0x1bc/0x640 [ 99.304695][ T9867] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 99.310935][ T9867] ? __fget_light+0x1a9/0x230 [ 99.315640][ T9867] ? __fdget+0x1b/0x20 [ 99.319699][ T9867] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 99.326034][ T9867] __sys_sendmsg+0x105/0x1d0 [ 99.330620][ T9867] ? __sys_sendmsg_sock+0xc0/0xc0 [ 99.335961][ T9867] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 99.341532][ T9867] ? do_fast_syscall_32+0xd1/0xe16 [ 99.346727][ T9867] ? entry_SYSENTER_compat+0x70/0x7f [ 99.352525][ T9867] ? do_fast_syscall_32+0xd1/0xe16 [ 99.357628][ T9867] __ia32_compat_sys_sendmsg+0x7a/0xb0 [ 99.363080][ T9867] do_fast_syscall_32+0x27b/0xe16 [ 99.368252][ T9867] entry_SYSENTER_compat+0x70/0x7f [ 99.373665][ T9867] RIP: 0023:0xf7ff49a9 [ 99.377804][ T9867] 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 [ 99.397813][ T9867] RSP: 002b:00000000ff8d886c EFLAGS: 00000246 ORIG_RAX: 0000000000000172 [ 99.406237][ T9867] RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 0000000020000d00 [ 99.414336][ T9867] RDX: 0000000000000000 RSI: 00000000ff8d8994 RDI: 00000000ff8d899c [ 99.422307][ T9867] RBP: 00000000732f2e01 R08: 0000000000000000 R09: 0000000000000000 [ 99.430418][ T9867] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 99.438552][ T9867] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 99.446522][ T9867] Modules linked in: [ 99.450596][ T9867] ---[ end trace ea92084cff18474e ]--- [ 99.456196][ T9867] RIP: 0010:strlen+0x1f/0xa0 [ 99.460820][ T9867] Code: 00 66 2e 0f 1f 84 00 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 fa 48 89 e5 48 c1 ea 03 41 54 49 89 fc 53 48 83 ec 08 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 04 84 c0 75 4d 41 80 3c 24 [ 99.481369][ T9867] RSP: 0018:ffffc90002026e80 EFLAGS: 00010282 [ 99.487466][ T9867] RAX: dffffc0000000000 RBX: ffff8880a3aaa718 RCX: 1ffffffff14f6ffe [ 99.495559][ T9867] RDX: 0000000000000062 RSI: ffffffff8673d9a1 RDI: 0000000000000314 [ 99.504180][ T9867] RBP: ffffc90002026e98 R08: ffff8880a32c0200 R09: ffffed10147554e3 [ 99.512376][ T9867] R10: ffffed10147554e2 R11: ffff8880a3aaa717 R12: 0000000000000314 [ 99.520679][ T9867] R13: 0000000000000304 R14: ffff8880a4619700 R15: ffff8880a3aaa700 [ 99.528705][ T9867] FS: 0000000000000000(0000) GS:ffff8880ae900000(0063) knlGS:0000000008431840 [ 99.537660][ T9867] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 99.544464][ T9867] CR2: 0000000020001080 CR3: 000000009cf91000 CR4: 00000000001406e0 [ 99.552521][ T9867] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 99.560644][ T9867] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 99.569166][ T9867] Kernel panic - not syncing: Fatal exception in interrupt [ 99.578435][ T9867] Kernel Offset: disabled [ 99.582803][ T9867] Rebooting in 86400 seconds..