(kgdb) bt
#0  sched_switch (td=0xffffff000f002b40, newtd=0xffffff00024f0000, flags=Variable "flags" is not available.
)
    at /usr/src/sys/kern/sched_ule.c:1850
#1  0xffffffff805b377d in mi_switch (flags=260, newtd=0x0)
    at /usr/src/sys/kern/kern_synch.c:449
#2  0xffffffff805e9073 in sleepq_switch (wchan=0xffffff8000bf59a1, pri=80)
    at /usr/src/sys/kern/subr_sleepqueue.c:530
#3  0xffffffff805e9c5d in sleepq_wait (wchan=0xffffff8000bf59a1, pri=80)
    at /usr/src/sys/kern/subr_sleepqueue.c:609
#4  0xffffffff805b3d97 in _sleep (ident=Variable "ident" is not available.
) at /usr/src/sys/kern/kern_synch.c:234
#5  0xffffff8000ac6b50 in afs_osi_Sleep (event=0xffffff8000bf59a1)
    at /usr/ports/net/openafs-devel/work/openafs/src/afs/FBSD/osi_sleep.c:142
#6  0xffffff8000a79d2b in Afs_Lock_Obtain (lock=0xffffff8000bf59a0, how=4)
    at /usr/ports/net/openafs-devel/work/openafs/src/afs/afs_lock.c:159
#7  0xffffff8000a8c275 in afs_GetVCache (afid=0xffffff000f003600,
    areq=0xffffff8078125390, cached=0x0, avc=Variable "avc" is not available.
)
    at /usr/ports/net/openafs-devel/work/openafs/src/afs/afs_vcache.c:1551
#8  0xffffff8000a93677 in afs_EvalFakeStat_int (avcp=0xffffff8078125388,
    state=0xffffff80781253b0, areq=0xffffff8078125390, canblock=1)
    at /usr/ports/net/openafs-devel/work/openafs/src/afs/VNOPS/afs_vnop_lookup.c:412
#9  0xffffff8000a9f9d1 in afs_close (avc=0xffffff8000d9a168, aflags=4,
    acred=0xffffff0004dfdc00)
    at /usr/ports/net/openafs-devel/work/openafs/src/afs/VNOPS/afs_vnop_write.c:691
#10 0xffffff8000ac89d5 in afs_vop_close (ap=0xffffff8078125440)
    at /usr/ports/net/openafs-devel/work/openafs/src/afs/FBSD/osi_vnodeops.c:651
#11 0xffffffff808f8c3f in VOP_CLOSE_APV (vop=0xffffff8000bd96e0,
    a=0xffffff8078125440) at vnode_if.c:508
#12 0xffffffff80641fcc in vgonel (vp=0xffffff000f2a6000) at vnode_if.h:225
#13 0xffffffff80642129 in vgone (vp=0xffffff000f2a6000)
    at /usr/src/sys/kern/vfs_subr.c:2519
#14 0xffffff8000ac6c87 in osi_TryEvictVCache (avc=0xffffff8000d9a168, slept=Variable "slept" is not available.
)
    at /usr/ports/net/openafs-devel/work/openafs/src/afs/FBSD/osi_vcache.c:39
#15 0xffffff8000a87743 in afs_ShakeLooseVCaches (anumber=5)
    at /usr/ports/net/openafs-devel/work/openafs/src/afs/afs_vcache.c:665
#16 0xffffff8000a8acc5 in afs_NewVCache (afid=0xffffff80781257b0,
    serverp=0xffffff0004e69d80)
    at /usr/ports/net/openafs-devel/work/openafs/src/afs/afs_vcache.c:808
#17 0xffffff8000a8ed0d in afs_create (adp=0xffffff8000da4cf8,
    aname=0xffffff0004ebfc20 "BIND.chroot.dist", attrs=0xffffff80781258d0,
    aexcl=NONEXCL, amode=Variable "amode" is not available.
)
---Type <return> to continue, or q <return> to quit---
    at /usr/ports/net/openafs-devel/work/openafs/src/afs/VNOPS/afs_vnop_create.c:427
#18 0xffffff8000ac8ba3 in afs_vop_create (ap=0xffffff8078125980)
    at /usr/ports/net/openafs-devel/work/openafs/src/afs/FBSD/osi_vnodeops.c:556
#19 0xffffffff808fb053 in VOP_CREATE_APV (vop=0xffffff8000bd96e0,
    a=0xffffff8078125980) at vnode_if.c:250
#20 0xffffffff8064dc1a in vn_open_cred (ndp=0xffffff8078125a20,
    flagp=0xffffff8078125a1c, cmode=Variable "cmode" is not available.
) at vnode_if.h:109
#21 0xffffffff8064adc9 in kern_openat (td=0xffffff000f002b40, fd=-100,
    path=0x504030 <Address 0x504030 out of bounds>, pathseg=Variable "pathseg" is not available.
)
    at /usr/src/sys/kern/vfs_syscalls.c:1083
#22 0xffffffff808a81c2 in syscall (frame=0xffffff8078125c80)
    at /usr/src/sys/amd64/amd64/trap.c:946
(kgdb) p *(struct afs_lock*)0xffffff8000bf59a0
$5 = {wait_states = 6 '\006', excl_locked = 2 '\002', readers_reading = 0,
  num_waiting = 2, spare = 0, time_waiting = {tv_sec = 0, tv_usec = 0},
  pid_last_reader = 0, pid_writer = 1259, src_indicator = 138}