(kgdb) bt
#0  doadump (textdump=1) at /usr/local/jenkins/jobs/1.3.0_87_netmagic_patch09/workspace/esos/sys/kern/kern_shutdown.c:273
#1  0xffffffff807e76cf in kern_reboot (howto=260) at /usr/local/jenkins/jobs/1.3.0_87_netmagic_patch09/workspace/esos/sys/kern/kern_shutdown.c:457
#2  0xffffffff807e7bfb in panic (fmt=0x1 <Address 0x1 out of bounds>) at /usr/local/jenkins/jobs/1.3.0_87_netmagic_patch09/workspace/esos/sys/kern/kern_shutdown.c:655
#3  0xffffffff8177ddeb in mps_iocfacts_allocate (sc=0xffffff8001356000, attaching=255 '▒')
    at /usr/local/jenkins/jobs/1.3.0_87_netmagic_patch09/workspace/esos/sys/modules/mps/../../dev/mps/mps.c:353
#4  0xffffffff8177e746 in mps_reinit (sc=0xffffff8001356000)
    at /usr/local/jenkins/jobs/1.3.0_87_netmagic_patch09/workspace/esos/sys/modules/mps/../../dev/mps/mps.c:722
#5  0xffffffff817876e0 in mps_ioctl (dev=<value optimized out>, cmd=<value optimized out>, arg=<value optimized out>, flag=<value optimized out>,
    td=<value optimized out>) at /usr/local/jenkins/jobs/1.3.0_87_netmagic_patch09/workspace/esos/sys/modules/mps/../../dev/mps/mps_user.c:2168
#6  0xffffffff81789b05 in mps_ioctl_devsw (dev=0xfffffe0016762800, com=536889603, arg=0xffffffa075984a80 "▒▒▒▒▒\177", flag=3, td=0xfffffe0033170920)
    at /usr/local/jenkins/jobs/1.3.0_87_netmagic_patch09/workspace/esos/sys/modules/mps/../../dev/mps/mps_user.c:2430
#7  0xffffffff806c928b in devfs_ioctl_f (fp=0xfffffe0ada415780, com=536889603, data=<value optimized out>, cred=<value optimized out>, td=0xfffffe0033170920)
    at /usr/local/jenkins/jobs/1.3.0_87_netmagic_patch09/workspace/esos/sys/fs/devfs/devfs_vnops.c:757
#8  0xffffffff80836bf6 in kern_ioctl (td=0xfffffe0033170920, fd=3, com=536889603, data=0xffffffa075984a80 "▒▒▒▒▒\177") at file.h:311
#9  0xffffffff80836e3d in sys_ioctl (td=0xfffffe0033170920, uap=0xffffffa075984a70)
    at /usr/local/jenkins/jobs/1.3.0_87_netmagic_patch09/workspace/esos/sys/kern/sys_generic.c:692
#10 0xffffffff80ba065a in amd64_syscall (td=0xfffffe0033170920, traced=0) at subr_syscall.c:135
#11 0xffffffff80b8a5c7 in Xfast_syscall () at /usr/local/jenkins/jobs/1.3.0_87_netmagic_patch09/workspace/esos/sys/amd64/amd64/exception.S:391
#12 0x0000000800929bac in ?? ()
Previous frame inner to this frame (corrupt stack?)