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Date: Sat, 23 Feb 2008 02:50:07 -0600 (CST)
From: Bryan Venteicher <bryanv@daemoninthecloset.org>
To: freebsd-current@freebsd.org
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Subject: panic: lock (smbsm) lockmgr does not match earlier (sleep mutex)
 lock
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Hi,

I receive the following panic "lock (smbsm) lockmgr does not match earlier (sleep mutex) lock" when loading the smbfs module on a recent current.

Kernel dumps weren't configured on the particular machine. Here's the abbreviated relevant portions of the stack:
...
nsmb_dev_load
smb_sm_init
smb_co_init
...
enroll
panic

In smb_co_init(), the same description/name is used to initialize both cp->co_interlock and cp->co_lock.