[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 54.940631][ T26] audit: type=1800 audit(1567760494.835:25): pid=8569 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 54.986446][ T26] audit: type=1800 audit(1567760494.835:26): pid=8569 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 55.023348][ T26] audit: type=1800 audit(1567760494.845:27): pid=8569 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 '10.128.0.18' (ECDSA) to the list of known hosts. executing program executing program syzkaller login: [ 63.885317][ T8725] ------------[ cut here ]------------ [ 63.891373][ T8725] WARNING: CPU: 0 PID: 8725 at net/xfrm/xfrm_policy.c:1541 xfrm_policy_insert_list.cold+0x11/0x90 [ 63.901947][ T8725] Kernel panic - not syncing: panic_on_warn set ... [ 63.908516][ T8725] CPU: 0 PID: 8725 Comm: syz-executor575 Not tainted 5.3.0-rc7+ #0 [ 63.916384][ T8725] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.926418][ T8725] Call Trace: [ 63.929693][ T8725] dump_stack+0x172/0x1f0 [ 63.934010][ T8725] ? __xfrm_sk_clone_policy+0xa30/0xae0 [ 63.939541][ T8725] panic+0x2dc/0x755 [ 63.943456][ T8725] ? add_taint.cold+0x16/0x16 [ 63.948168][ T8725] ? __kasan_check_write+0x14/0x20 [ 63.953265][ T8725] ? __warn.cold+0x5/0x4c [ 63.957577][ T8725] ? __warn+0xe7/0x1e0 [ 63.961629][ T8725] ? xfrm_policy_insert_list.cold+0x11/0x90 [ 63.967507][ T8725] __warn.cold+0x20/0x4c [ 63.971745][ T8725] ? wake_up_klogd+0x99/0xd0 [ 63.976327][ T8725] ? xfrm_policy_insert_list.cold+0x11/0x90 [ 63.982200][ T8725] report_bug+0x263/0x2b0 [ 63.986513][ T8725] do_error_trap+0x11b/0x200 [ 63.991095][ T8725] do_invalid_op+0x37/0x50 [ 63.995510][ T8725] ? xfrm_policy_insert_list.cold+0x11/0x90 [ 64.001384][ T8725] invalid_op+0x23/0x30 [ 64.005525][ T8725] RIP: 0010:xfrm_policy_insert_list.cold+0x11/0x90 [ 64.012005][ T8725] Code: f0 79 fb e9 67 fa ff ff 88 55 c0 e8 e9 f0 79 fb 0f b6 55 c0 e9 83 fa ff ff e8 9b cc 3f fb 48 c7 c7 a0 20 52 88 e8 e3 6b 29 fb <0f> 0b 48 8b 45 b8 42 0f b6 14 20 48 8b 45 d0 83 e0 07 83 c0 03 38 [ 64.031598][ T8725] RSP: 0018:ffff88808f7ff3a0 EFLAGS: 00010282 [ 64.037657][ T8725] RAX: 0000000000000024 RBX: ffff8880a1ac0040 RCX: 0000000000000000 [ 64.045610][ T8725] RDX: 0000000000000000 RSI: ffffffff815c26f6 RDI: ffffed1011effe66 [ 64.053569][ T8725] RBP: ffff88808f7ff420 R08: 0000000000000024 R09: ffffed1015d060d1 [ 64.061536][ T8725] R10: ffffed1015d060d0 R11: ffff8880ae830687 R12: dffffc0000000000 [ 64.069490][ T8725] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8880a410b240 [ 64.077470][ T8725] ? vprintk_func+0x86/0x189 [ 64.082068][ T8725] xfrm_policy_inexact_insert+0xec/0x1000 [ 64.087770][ T8725] ? lock_acquire+0x190/0x410 [ 64.092428][ T8725] ? __sanitizer_cov_trace_switch+0x49/0x80 [ 64.098302][ T8725] ? __sanitizer_cov_trace_cmp1+0x17/0x20 [ 64.104007][ T8725] xfrm_policy_insert+0x530/0x750 [ 64.109017][ T8725] xfrm_add_policy+0x28f/0x530 [ 64.113791][ T8725] ? xfrm_policy_construct+0x680/0x680 [ 64.119249][ T8725] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 64.125493][ T8725] ? ns_capable_common+0x93/0x100 [ 64.130515][ T8725] ? __nla_parse+0x43/0x60 [ 64.134915][ T8725] ? xfrm_policy_construct+0x680/0x680 [ 64.140357][ T8725] xfrm_user_rcv_msg+0x459/0x770 [ 64.145284][ T8725] ? copy_to_user_state_extra+0xdf0/0xdf0 [ 64.151012][ T8725] ? __mutex_lock+0x45d/0x13c0 [ 64.155779][ T8725] ? netlink_deliver_tap+0x22d/0xbf0 [ 64.161057][ T8725] ? xfrm_netlink_rcv+0x61/0x90 [ 64.165901][ T8725] netlink_rcv_skb+0x177/0x450 [ 64.170648][ T8725] ? copy_to_user_state_extra+0xdf0/0xdf0 [ 64.176349][ T8725] ? netlink_ack+0xb30/0xb30 [ 64.180927][ T8725] xfrm_netlink_rcv+0x70/0x90 [ 64.185583][ T8725] netlink_unicast+0x531/0x710 [ 64.190339][ T8725] ? netlink_attachskb+0x7c0/0x7c0 [ 64.195434][ T8725] ? _copy_from_iter_full+0x25d/0x8a0 [ 64.200801][ T8725] ? __sanitizer_cov_trace_cmp8+0x18/0x20 [ 64.206519][ T8725] ? __check_object_size+0x3d/0x437 [ 64.211702][ T8725] netlink_sendmsg+0x8a5/0xd60 [ 64.216449][ T8725] ? netlink_unicast+0x710/0x710 [ 64.221363][ T8725] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 64.226902][ T8725] ? apparmor_socket_sendmsg+0x2a/0x30 [ 64.232356][ T8725] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 64.238577][ T8725] ? security_socket_sendmsg+0x8d/0xc0 [ 64.244028][ T8725] ? netlink_unicast+0x710/0x710 [ 64.248948][ T8725] sock_sendmsg+0xd7/0x130 [ 64.253361][ T8725] ___sys_sendmsg+0x803/0x920 [ 64.258027][ T8725] ? copy_msghdr_from_user+0x440/0x440 [ 64.263470][ T8725] ? __kasan_check_read+0x11/0x20 [ 64.268475][ T8725] ? mark_lock+0xc0/0x11e0 [ 64.272873][ T8725] ? __kasan_check_read+0x11/0x20 [ 64.277888][ T8725] ? __lock_acquire+0x8a2/0x4c30 [ 64.282808][ T8725] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 64.289036][ T8725] ? __this_cpu_preempt_check+0x3a/0x210 [ 64.294650][ T8725] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 64.300897][ T8725] ? percpu_counter_add_batch+0x13c/0x190 [ 64.306612][ T8725] ? __fd_install+0x1bc/0x640 [ 64.311282][ T8725] ? find_held_lock+0x35/0x130 [ 64.316078][ T8725] ? __fd_install+0x1bc/0x640 [ 64.320751][ T8725] ? alloc_file+0x325/0x4d0 [ 64.325244][ T8725] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 64.331483][ T8725] ? __fget_light+0x1a9/0x230 [ 64.336144][ T8725] ? __fdget+0x1b/0x20 [ 64.340194][ T8725] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 64.346460][ T8725] __sys_sendmsg+0x105/0x1d0 [ 64.351035][ T8725] ? __sys_sendmsg_sock+0xd0/0xd0 [ 64.356048][ T8725] ? trace_hardirqs_on_thunk+0x1a/0x20 [ 64.361483][ T8725] ? do_syscall_64+0x26/0x6a0 [ 64.366138][ T8725] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 64.372187][ T8725] ? do_syscall_64+0x26/0x6a0 [ 64.376852][ T8725] __x64_sys_sendmsg+0x78/0xb0 [ 64.381610][ T8725] do_syscall_64+0xfd/0x6a0 [ 64.386545][ T8725] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 64.392425][ T8725] RIP: 0033:0x442209 [ 64.396300][ T8725] Code: e8 fc ab 02 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 9b 09 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 64.415930][ T8725] RSP: 002b:00007ffceda47ad8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 64.424370][ T8725] RAX: ffffffffffffffda RBX: 00000000004a3298 RCX: 0000000000442209 [ 64.432374][ T8725] RDX: 0000000000000000 RSI: 0000000020000080 RDI: 0000000000000005 [ 64.440329][ T8725] RBP: 000000000000f970 R08: 00000000004002c8 R09: 00000000004002c8 [ 64.448338][ T8725] R10: 00000000004002c8 R11: 0000000000000246 R12: 0000000000403030 [ 64.456327][ T8725] R13: 00000000004030c0 R14: 0000000000000000 R15: 0000000000000000 [ 64.465860][ T8725] Kernel Offset: disabled [ 64.470255][ T8725] Rebooting in 86400 seconds..