[issue830] system forced exception while in user mode

["Rumko \(via DragonFly issue tracker\)" <sinknull@xxxxxxxxxxxxxxxxxxxxx>]

Rumko <rumcic@gmail.com> added the comment:

Got another panic ~1 week ago with the same message. This time I was updating my
system (using pkgmanager) and playing with X (change xorg.conf, restart X, repeat).

The dump is at leaf:~rumko/crash/exception/

Backtrace:
#0  dumpsys () at ./machine/thread.h:83
#1  0xc01e6ced in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:375
#2  0xc01e6fb2 in panic (fmt=0xc0436f1c "%s") at
/usr/src/sys/kern/kern_shutdown.c:802
#3  0xc03f9e9a in trap_fatal (frame=0xdd750d40, eva=<value optimized out>) at
/usr/src/sys/platform/pc32/i386/trap.c:1093
#4  0xc03fa790 in trap (frame=0xdd750d40) at
/usr/src/sys/platform/pc32/i386/trap.c:844
#5  0xc03e8251 in doreti_ast () at /usr/src/sys/platform/pc32/isa/ipl.s:268
#6  0xdd750d40 in ?? ()
Backtrace stopped: previous frame inner to this frame (corrupt stack?)

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status: resolved -> chatting

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DragonFly issue tracker <bugs@lists.dragonflybsd.org>
<http://bugs.dragonflybsd.org/issue830>
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