[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 79.154162][ T27] audit: type=1800 audit(1577111600.953:25): pid=9285 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 79.184140][ T27] audit: type=1800 audit(1577111600.953:26): pid=9285 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 79.229516][ T27] audit: type=1800 audit(1577111600.953:27): pid=9285 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 '10.128.0.16' (ECDSA) to the list of known hosts. executing program executing program executing program executing program syzkaller login: [ 89.387081][ T9438] IPVS: ftp: loaded support on port[0] = 21 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 91.706669][T10505] ------------[ cut here ]------------ [ 91.712333][T10505] WARNING: CPU: 1 PID: 10505 at net/xfrm/xfrm_policy.c:1543 xfrm_policy_insert_list+0x3b7/0xd10 [ 91.722728][T10505] Kernel panic - not syncing: panic_on_warn set ... [ 91.730092][T10505] CPU: 1 PID: 10505 Comm: syz-executor696 Not tainted 5.5.0-rc3-syzkaller #0 [ 91.738832][T10505] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 91.749054][T10505] Call Trace: [ 91.752344][T10505] dump_stack+0x197/0x210 [ 91.756673][T10505] ? xfrm_policy_insert_list+0x300/0xd10 [ 91.766047][T10505] panic+0x2e3/0x75c [ 91.769924][T10505] ? add_taint.cold+0x16/0x16 [ 91.775125][T10505] ? printk+0xba/0xed [ 91.779435][T10505] ? kmsg_dump_rewind_nolock+0xe4/0xe4 [ 91.785315][T10505] ? __warn.cold+0x14/0x3e [ 91.789969][T10505] ? __warn+0xd9/0x1cf [ 91.794034][T10505] ? xfrm_policy_insert_list+0x3b7/0xd10 [ 91.799648][T10505] __warn.cold+0x2f/0x3e [ 91.803881][T10505] ? report_bug.cold+0x63/0xb2 [ 91.808763][T10505] ? xfrm_policy_insert_list+0x3b7/0xd10 [ 91.814618][T10505] report_bug+0x289/0x300 [ 91.818946][T10505] do_error_trap+0x11b/0x200 [ 91.823535][T10505] do_invalid_op+0x37/0x50 [ 91.827943][T10505] ? xfrm_policy_insert_list+0x3b7/0xd10 [ 91.833631][T10505] invalid_op+0x23/0x30 [ 91.837794][T10505] RIP: 0010:xfrm_policy_insert_list+0x3b7/0xd10 [ 91.844167][T10505] Code: 14 20 48 89 f8 83 e0 07 83 c0 03 38 d0 0f 8c cf fd ff ff 84 d2 0f 84 c7 fd ff ff e8 03 eb 02 fb e9 bd fd ff ff e8 39 32 c5 fa <0f> 0b 48 8b 45 c0 0f b6 10 48 8b 45 c8 83 e0 07 83 c0 03 38 d0 7c [ 91.863785][T10505] RSP: 0018:ffffc90002fa72f0 EFLAGS: 00010293 [ 91.869841][T10505] RAX: ffff8880a28764c0 RBX: ffff88809ff19800 RCX: ffffffff86affd65 [ 91.878597][T10505] RDX: 0000000000000000 RSI: ffffffff86affbb7 RDI: ffff88809ff19a20 [ 91.886648][T10505] RBP: ffffc90002fa7368 R08: ffff8880a28764c0 R09: ffff8880a2876d50 [ 91.894640][T10505] R10: fffff520005f4e71 R11: ffffffff8a799907 R12: dffffc0000000000 [ 91.902744][T10505] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 91.910738][T10505] ? xfrm_policy_insert_list+0x565/0xd10 [ 91.916387][T10505] ? xfrm_policy_insert_list+0x3b7/0xd10 [ 91.922035][T10505] xfrm_policy_inexact_insert+0xef/0xba0 [ 91.927682][T10505] ? rwlock_bug.part.0+0x90/0x90 [ 91.932601][T10505] ? lock_acquire+0x190/0x410 [ 91.941175][T10505] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 91.947057][T10505] ? __sanitizer_cov_trace_cmp1+0x17/0x20 [ 91.952846][T10505] ? policy_hash_bysel+0x129/0xce0 [ 91.957943][T10505] xfrm_policy_insert+0x597/0x7f0 [ 91.962963][T10505] xfrm_add_policy+0x28f/0x580 [ 91.967726][T10505] ? xfrm_policy_construct+0x680/0x680 [ 91.973170][T10505] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 91.979394][T10505] ? ns_capable_common+0x93/0x100 [ 91.984417][T10505] ? __nla_parse+0x43/0x60 [ 91.988827][T10505] ? xfrm_policy_construct+0x680/0x680 [ 91.994268][T10505] xfrm_user_rcv_msg+0x459/0x770 [ 91.999452][T10505] ? copy_to_user_state_extra+0xdf0/0xdf0 [ 92.005172][T10505] ? __mutex_lock+0x458/0x13c0 [ 92.009915][T10505] ? netlink_deliver_tap+0x228/0xbe0 [ 92.015182][T10505] ? xfrm_netlink_rcv+0x61/0x90 [ 92.020015][T10505] netlink_rcv_skb+0x177/0x450 [ 92.024770][T10505] ? copy_to_user_state_extra+0xdf0/0xdf0 [ 92.030470][T10505] ? netlink_ack+0xb50/0xb50 [ 92.035674][T10505] xfrm_netlink_rcv+0x70/0x90 [ 92.040333][T10505] netlink_unicast+0x58c/0x7d0 [ 92.045090][T10505] ? netlink_attachskb+0x870/0x870 [ 92.050180][T10505] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 92.055892][T10505] ? __check_object_size+0x3d/0x437 [ 92.061082][T10505] netlink_sendmsg+0x91c/0xea0 [ 92.065831][T10505] ? netlink_unicast+0x7d0/0x7d0 [ 92.070749][T10505] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 92.076295][T10505] ? apparmor_socket_sendmsg+0x2a/0x30 [ 92.081743][T10505] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 92.087972][T10505] ? security_socket_sendmsg+0x8d/0xc0 [ 92.093414][T10505] ? netlink_unicast+0x7d0/0x7d0 [ 92.098335][T10505] sock_sendmsg+0xd7/0x130 [ 92.102734][T10505] ____sys_sendmsg+0x753/0x880 [ 92.107485][T10505] ? kernel_sendmsg+0x50/0x50 [ 92.112163][T10505] ? __fget+0x35d/0x550 [ 92.116310][T10505] ? find_held_lock+0x35/0x130 [ 92.121083][T10505] ___sys_sendmsg+0x100/0x170 [ 92.125741][T10505] ? sendmsg_copy_msghdr+0x70/0x70 [ 92.130831][T10505] ? __kasan_check_read+0x11/0x20 [ 92.135848][T10505] ? __fget+0x37f/0x550 [ 92.139985][T10505] ? ksys_dup3+0x3e0/0x3e0 [ 92.144380][T10505] ? __kasan_check_read+0x11/0x20 [ 92.149382][T10505] ? mark_lock+0xc2/0x1220 [ 92.153782][T10505] ? __fget_light+0x1a9/0x230 [ 92.158440][T10505] ? __fdget+0x1b/0x20 [ 92.162498][T10505] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 92.168880][T10505] __sys_sendmsg+0x105/0x1d0 [ 92.173462][T10505] ? __sys_sendmsg_sock+0xc0/0xc0 [ 92.178492][T10505] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 92.184041][T10505] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 92.189754][T10505] ? do_syscall_64+0x26/0x790 [ 92.194417][T10505] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 92.200474][T10505] ? do_syscall_64+0x26/0x790 [ 92.205155][T10505] __x64_sys_sendmsg+0x78/0xb0 [ 92.209912][T10505] do_syscall_64+0xfa/0x790 [ 92.214414][T10505] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 92.220302][T10505] RIP: 0033:0x4476f9 [ 92.224200][T10505] Code: e8 0c 0a 03 00 48 83 c4 18 c3 0f 1f 80 00 00 00 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 8b 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 92.243801][T10505] RSP: 002b:00007f25413d2db8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 92.252203][T10505] RAX: ffffffffffffffda RBX: 00000000006dcc68 RCX: 00000000004476f9 [ 92.260160][T10505] RDX: 0000000000000000 RSI: 000000002014f000 RDI: 0000000000000003 [ 92.268113][T10505] RBP: 00000000006dcc60 R08: 00007f25413d3700 R09: 0000000000000000 [ 92.276076][T10505] R10: 00007f25413d3700 R11: 0000000000000246 R12: 00000000006dcc6c [ 92.284036][T10505] R13: 00007ffeca52c61f R14: 00007f25413d39c0 R15: 0000000000000003 [ 92.292992][T10505] Kernel Offset: disabled [ 92.297403][T10505] Rebooting in 86400 seconds..