[ 88.551028][ T27] audit: type=1800 audit(1579973550.526:26): pid=9613 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 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. [ 89.624453][ T27] kauditd_printk_skb: 2 callbacks suppressed [ 89.624465][ T27] audit: type=1800 audit(1579973551.616:29): pid=9613 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 [ 89.650590][ T27] audit: type=1800 audit(1579973551.626:30): pid=9613 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 '10.128.0.31' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 100.494549][ T9768] kasan: CONFIG_KASAN_INLINE enabled [ 100.500016][ T9768] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 100.508138][ T9768] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 100.515185][ T9768] CPU: 0 PID: 9768 Comm: syz-executor092 Not tainted 5.5.0-rc6-syzkaller #0 [ 100.525361][ T9768] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 100.535427][ T9768] RIP: 0010:strlen+0x1f/0xa0 [ 100.540014][ T9768] 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 [ 100.559700][ T9768] RSP: 0018:ffffc90002016e90 EFLAGS: 00010286 [ 100.566684][ T9768] RAX: dffffc0000000000 RBX: ffff8880939f9f18 RCX: 1ffffffff14f9b26 [ 100.574646][ T9768] RDX: 0000000000000082 RSI: ffffffff8678f791 RDI: 0000000000000414 [ 100.582632][ T9768] RBP: ffffc90002016ea8 R08: ffff888096c7c100 R09: ffffed101273f3e3 [ 100.590588][ T9768] R10: ffffed101273f3e2 R11: ffff8880939f9f17 R12: 0000000000000414 [ 100.598545][ T9768] R13: 0000000000000404 R14: ffff8880a68de200 R15: ffff8880939f9f00 [ 100.606509][ T9768] FS: 0000000001c79880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 100.615446][ T9768] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 100.622017][ T9768] CR2: ffffffffff600400 CR3: 00000000a69fb000 CR4: 00000000001406f0 [ 100.630106][ T9768] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 100.638068][ T9768] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 100.646114][ T9768] Call Trace: [ 100.649398][ T9768] ip_set_comment_free+0x69/0xe0 [ 100.654336][ T9768] hash_net4_add+0x1b9a/0x2200 [ 100.659088][ T9768] hash_net4_uadt+0x596/0x940 [ 100.664171][ T9768] ? hash_net4_head+0x730/0x730 [ 100.669006][ T9768] ? hash_net6_uadt+0x880/0x880 [ 100.673952][ T9768] call_ad+0x1a0/0x5a0 [ 100.678060][ T9768] ? start_msg+0x220/0x220 [ 100.682576][ T9768] ? nla_memcpy+0xb0/0xb0 [ 100.686901][ T9768] ? __nla_parse+0x43/0x60 [ 100.691306][ T9768] ip_set_ad.isra.0+0x572/0xb20 [ 100.696244][ T9768] ? ip_set_nfnl_get_byindex+0x460/0x460 [ 100.701922][ T9768] ? nla_memcpy+0xb0/0xb0 [ 100.706426][ T9768] ? lock_downgrade+0x920/0x920 [ 100.711273][ T9768] ip_set_uadd+0x37/0x50 [ 100.715501][ T9768] ? ip_set_udel+0x50/0x50 [ 100.719920][ T9768] nfnetlink_rcv_msg+0xcf2/0xfb0 [ 100.724842][ T9768] ? nfnetlink_bind+0x2c0/0x2c0 [ 100.729896][ T9768] ? __kasan_check_read+0x11/0x20 [ 100.734912][ T9768] ? __lock_acquire+0x8a0/0x4a00 [ 100.739833][ T9768] ? save_stack+0x5c/0x90 [ 100.744600][ T9768] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 100.750841][ T9768] ? apparmor_capable+0x497/0x900 [ 100.755864][ T9768] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 100.762113][ T9768] ? __kasan_check_read+0x11/0x20 [ 100.767131][ T9768] ? apparmor_cred_prepare+0x7b0/0x7b0 [ 100.773025][ T9768] netlink_rcv_skb+0x177/0x450 [ 100.777929][ T9768] ? nfnetlink_bind+0x2c0/0x2c0 [ 100.782775][ T9768] ? netlink_ack+0xb50/0xb50 [ 100.787354][ T9768] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 100.793587][ T9768] ? ns_capable_common+0x93/0x100 [ 100.798606][ T9768] ? ns_capable+0x20/0x30 [ 100.802931][ T9768] ? __netlink_ns_capable+0x104/0x140 [ 100.808400][ T9768] nfnetlink_rcv+0x1ba/0x460 [ 100.813130][ T9768] ? nfnetlink_rcv_batch+0x17a0/0x17a0 [ 100.819021][ T9768] ? netlink_deliver_tap+0x24a/0xbf0 [ 100.824300][ T9768] ? __kasan_check_write+0x14/0x20 [ 100.829395][ T9768] netlink_unicast+0x59e/0x7e0 [ 100.834139][ T9768] ? netlink_attachskb+0x870/0x870 [ 100.839251][ T9768] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 100.844964][ T9768] ? __check_object_size+0x3d/0x437 [ 100.850206][ T9768] netlink_sendmsg+0x91c/0xea0 [ 100.854965][ T9768] ? netlink_unicast+0x7e0/0x7e0 [ 100.859892][ T9768] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 100.865450][ T9768] ? apparmor_socket_sendmsg+0x2a/0x30 [ 100.870944][ T9768] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 100.877177][ T9768] ? security_socket_sendmsg+0x8d/0xc0 [ 100.882630][ T9768] ? netlink_unicast+0x7e0/0x7e0 [ 100.887665][ T9768] sock_sendmsg+0xd7/0x130 [ 100.892083][ T9768] ____sys_sendmsg+0x753/0x880 [ 100.896940][ T9768] ? kernel_sendmsg+0x50/0x50 [ 100.901618][ T9768] ? lockdep_init_map+0x1be/0x6d0 [ 100.906639][ T9768] ___sys_sendmsg+0x100/0x170 [ 100.911369][ T9768] ? sendmsg_copy_msghdr+0x70/0x70 [ 100.916485][ T9768] ? __kasan_check_read+0x11/0x20 [ 100.921504][ T9768] ? __lock_acquire+0x8a0/0x4a00 [ 100.926436][ T9768] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 100.932799][ T9768] ? __this_cpu_preempt_check+0x35/0x190 [ 100.938422][ T9768] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 100.944661][ T9768] ? percpu_counter_add_batch+0x13c/0x190 [ 100.952386][ T9768] ? __fd_install+0x1bc/0x640 [ 100.957047][ T9768] ? find_held_lock+0x35/0x130 [ 100.961991][ T9768] ? __fd_install+0x1bc/0x640 [ 100.966660][ T9768] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 100.973054][ T9768] ? __fget_light+0x1a9/0x230 [ 100.977740][ T9768] ? __fdget+0x1b/0x20 [ 100.981807][ T9768] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 100.988094][ T9768] __sys_sendmsg+0x105/0x1d0 [ 100.992713][ T9768] ? __sys_sendmsg_sock+0xc0/0xc0 [ 100.997748][ T9768] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 101.003314][ T9768] ? do_syscall_64+0x26/0x790 [ 101.007984][ T9768] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 101.014044][ T9768] ? do_syscall_64+0x26/0x790 [ 101.018753][ T9768] __x64_sys_sendmsg+0x78/0xb0 [ 101.023521][ T9768] do_syscall_64+0xfa/0x790 [ 101.028011][ T9768] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 101.033893][ T9768] RIP: 0033:0x440379 [ 101.037770][ T9768] 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 [ 101.057725][ T9768] RSP: 002b:00007ffe2f0ea408 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 101.066228][ T9768] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440379 [ 101.074259][ T9768] RDX: 0000000000000000 RSI: 0000000020000d00 RDI: 0000000000000004 [ 101.082227][ T9768] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 101.090192][ T9768] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000401c00 [ 101.099346][ T9768] R13: 0000000000401c90 R14: 0000000000000000 R15: 0000000000000000 [ 101.107317][ T9768] Modules linked in: [ 101.111283][ T9768] ---[ end trace 5246480c21eb365b ]--- [ 101.116753][ T9768] RIP: 0010:strlen+0x1f/0xa0 [ 101.121390][ T9768] 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 [ 101.141293][ T9768] RSP: 0018:ffffc90002016e90 EFLAGS: 00010286 [ 101.147386][ T9768] RAX: dffffc0000000000 RBX: ffff8880939f9f18 RCX: 1ffffffff14f9b26 [ 101.155480][ T9768] RDX: 0000000000000082 RSI: ffffffff8678f791 RDI: 0000000000000414 [ 101.163497][ T9768] RBP: ffffc90002016ea8 R08: ffff888096c7c100 R09: ffffed101273f3e3 [ 101.171660][ T9768] R10: ffffed101273f3e2 R11: ffff8880939f9f17 R12: 0000000000000414 [ 101.179661][ T9768] R13: 0000000000000404 R14: ffff8880a68de200 R15: ffff8880939f9f00 [ 101.187797][ T9768] FS: 0000000001c79880(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 [ 101.196767][ T9768] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 101.203413][ T9768] CR2: ffffffffff600400 CR3: 00000000a69fb000 CR4: 00000000001406f0 [ 101.211429][ T9768] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 101.219466][ T9768] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 101.227437][ T9768] Kernel panic - not syncing: Fatal exception in interrupt [ 101.236047][ T9768] Kernel Offset: disabled [ 101.240383][ T9768] Rebooting in 86400 seconds..