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Date:      Thu, 24 Jan 2002 14:36:58 -0500 (EST)
From:      Andrew Gallatin <gallatin@cs.duke.edu>
To:        Volker Stolz <stolz@hyperion.informatik.rwth-aachen.de>
Cc:        freebsd-alpha@freebsd.org
Subject:   Re: alpha/34232: rpc.statd throws alignment errors
Message-ID:  <15440.25178.498060.252753@grasshopper.cs.duke.edu>
In-Reply-To: <20020124201845.A12480@i2.informatik.rwth-aachen.de>
References:  <202201241710.20OHA8r00644@varphi.ikea.net> <15440.21386.540347.636057@grasshopper.cs.duke.edu> <20020124201845.A12480@i2.informatik.rwth-aachen.de>

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Volker Stolz writes:
 > On Thu, Jan 24, 2002 at 01:33:46PM -0500, Andrew Gallatin wrote:
 > > Can you build it with symbols, cause a coredump (uac -s or  sysctl
 > > machdep.unaligned_sigbus=1), and show us a backtrace?




 > (gdb) s
 > 73	  (void)pmap_unset(SM_PROG, SM_VERS);
 > (gdb) 
 > pid 773 (rpc.statd): unaligned access: va=0x11ffb53c pc=0x1600bdf24 ra=0x1600bdf54 op=ldt


You're doing it wrong.  You want to cause the unaligned access to
crash the program.  Then you get the stack trace from the coredump.


All I can tell from this information is that its happening in some
library (0x1600bdf24 is where libs are mapped).

Drew

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