Consistent crash of BeagleBone kernel

I’m seeing the following crash quite consistently on r286438.  It looks like the recent work on the kernel linker locking still has some issues.

Any suggested workarounds?

Tim

==== log trace ===
...
Starting file system checks:
/dev/mmcsd0s2a: FILE SYSTEM CLEAN; SKIPPING CHECKS
/dev/mmcsd0s2a: clean, 7320851 free (179 frags, 915084 blocks, 0.0% fragmentation)
lock order reversal:
 1st 0xcd225040 bufwait (bufwait) _at_ /Users/tim/projects/crochet/src-head/sys/kern/vfs_bio.c:3191
 2nd 0xc2e69400 dirhash (dirhash) _at_ /Users/tim/projects/crochet/src-head/sys/ufs/ufs/ufs_dirhash.c:281
… usual stack trace omitted ...
Mounting local file systems:random: unblocking device.
.
ELF ldconfig path: /lib /usr/lib /usr/lib/compat
Setting hostname: beaglebone.
Setting up harvesting:[HIGH_PERFORMANCE],[FS_ATIME],SWI,INTERRUPT,NET_NG,NET_ETHER,NET_TUN,MOUSE,KEYBOARD,ATTACH,CACHED
Feeding entropy:.
lock order reversal:
 1st 0xc083ef40 kernel linker (kernel linker) _at_ /Users/tim/projects/crochet/src-head/sys/kern/kern_linker.c:1030
 2nd 0xc2d63c94 ufs (ufs) _at_ /Users/tim/projects/crochet/src-head/sys/kern/vfs_lookup.c:529
KDB: stack backtrace:
panic: _sx_xlock_hard: recursed on non-recursive sx kernel linker _at_ /Users/tim/projects/crochet/src-head/sys/kern/kern_linker.c:552

KDB: enter: panic
[ thread pid 168 tid 100079 ]
Stopped at      $d.7:   ldrb    r15, [r15, r15, ror r15]!
db> bt
Tracing pid 168 tid 100079 td 0xc30db6a0
panic: _sx_xlock_hard: recursed on non-recursive sx kernel linker _at_ /Users/tim/projects/crochet/src-head/sys/kern/kern_linker.c:552

Uptime: 4m0s
Rebooting...