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Date:      Fri, 17 Aug 2001 10:39:09 -0700
From:      "David O'Brien" <obrien@freebsd.org>
To:        alpha@freebsd.org
Subject:   panic in July 9th kernel
Message-ID:  <20010817103907.A97043@dragon.nuxi.com>

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I thought this was a "golden kernel" for me.  I was wrong.
I know this is somewhat dated, but maybe the output is useful.

While compiling the GCC port and doing a `cvs up -D' I got:

panic: mutex Giant not owned at ../../../kern/kern_exec.c:502
cpuid = 1; panic
Stopped at      Debugger+0x34:  zapnot  v0,#0xf,a0      <v0=0x0,a0=0x6>
db> trace
Debugger() at Debugger+0x34
panic() at panic+0x178
_mtx_assert() at _mtx_assert+0x64
exec_unmap_first_page() at exec_unmap_first_page+0x58
execve() at execve+0xf24
syscall() at syscall+0x718
XentSys() at XentSys+0x64
--- syscall (0, FreeBSD ELF, nosys) ---
--- user mode ---
db> show locks
exclusive (sleep mutex) Giant (0xfffffc00007af2c8) locked @ ../../../alpha/alpha/pmap.c:2891
db> show pcpu
cpuid     = 1
ipis      = 0
next ASN  = 76
curproc   = 0xfffffe001d61ef00: pid 5943 "test"
curpcb    = 0x1b51e000
fpcurproc = none
idleproc  = 0xfffffe001a3a3600: pid 10 "idle: cpu1"
spin locks held:
db> 

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