On 08-Jun-2002 Bernd Walter wrote:
> Anyone knows what to do with this?
> It happened on an alpha with yesterdays -current.
> panic: blockable sleep lock (sleep mutex) vnode_free_list @ 
> panic
> Stopped at      Debugger+0x34:  zapnot  v0,#0xf,v0      <v0=0x7>

Oh, this is ugly.

> db> trace
> Debugger() at Debugger+0x34
> panic() at panic+0xe4
> witness_lock() at witness_lock+0xb4
> _mtx_lock_flags() at _mtx_lock_flags+0xa8
> vfree() at vfree+0x30
> vm_page_free_toq() at vm_page_free_toq+0x18c
> vm_page_free() at vm_page_free+0x2c
> vm_page_alloc() at vm_page_alloc+0x158
> pmap_growkernel() at pmap_growkernel+0x398

This runs in a critical section (which may not really be correct, quite possibly
it should be turned off, but someone more familiar with the alpha pmap than I
(dfr?) would better be able to comment) and that is why it complains when it tries
to acquire a sleep mutex in vfree().


John Baldwin <[EMAIL PROTECTED]>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve!"  -  http://www.FreeBSD.org/

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