From owner-freebsd-alpha  Thu Jun 21 14: 1:19 2001
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From: Andrew Gallatin <gallatin@cs.duke.edu>
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Date: Thu, 21 Jun 2001 17:00:45 -0400 (EDT)
To: <mjacob@feral.com>
Cc: John Baldwin <jhb@FreeBSD.ORG>, <alpha@FreeBSD.ORG>
Subject: Re: more panics, with some traceback info....
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This looks very similar to other pmap corruption panics that have been
posted in the past..

Is this at boot, or does it take a while for it to panic?

Can somebody re-review my pmap_emulate_reference() hacks?

Drew


Matthew Jacob writes:
 > 
 > 
 > panic: blockable sleep lock (sleep mutex) Giant @ ../../vm/vm_fault.c:213
 > cpuid = 0; panic
 > db> t
 > Debugger() at Debugger+0x34
 > panic() at panic+0x178
 > witness_lock() at witness_lock+0x240
 > vm_fault() at vm_fault+0x108
 > trap() at trap+0xf78
 > XentMM() at XentMM+0x2c
 > --- memory management fault (from ipl 7) ---
 > hardclock() at hardclock+0x308
 > handleclock() at handleclock+0x22c
 > alpha_clock_interrupt() at alpha_clock_interrupt+0x68
 > interrupt() at interrupt+0xb8
 > XentInt() at XentInt+0x28
 > --- interrupt (from ipl 0) ---
 > witness_unlock() at witness_unlock+0x50
 > zalloc() at zalloc+0x28c
 > get_pv_entry() at get_pv_entry+0x70
 > pmap_insert_entry() at pmap_insert_entry+0x34
 > pmap_enter_quick() at pmap_enter_quick+0x214
 > pmap_object_init_pt() at pmap_object_init_pt+0x1b8
 > vm_map_insert() at vm_map_insert+0x37c
 > elf_load_section() at elf_load_section+0x33c
 > exec_elf_imgact() at exec_elf_imgact+0x528
 > execve() at execve+0x274
 > syscall() at syscall+0x708
 > XentSys() at XentSys+0x64
 > --- syscall (59, FreeBSD ELF, execve) ---
 > --- user mode ---
 > 

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