DragonFly bugs List (threaded) for 2009-01
DragonFly BSD
DragonFly bugs List (threaded) for 2009-01
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Re: HAMMER crash during unmount

From: Matthias Schmidt <matthias@xxxxxxxxxxxxxxxx>
Date: Fri, 23 Jan 2009 11:55:08 +0100

* Matthew Dillon wrote:
>     Very odd.  Try w/ the lastest master.  It has this patch:
>     http://gitweb.dragonflybsd.org/dragonfly.git/commitdiff/d40bfeca35caa9f1c470a05381618447b19746c9
>     Which I hope solves the umount issue.  If not we will have to
>     investigate more.

No luck.  VM crashed after the first install cycle.  Backtrace stays the

#0  dumpsys () at ./machine/thread.h:83
#1  0xc02e21ee in boot (howto=260) at
#2  0xc02e230f in panic (fmt=0xc053c516 "from debugger") at
#3  0xc0165705 in db_panic (addr=-1068660116, have_addr=0, count=-1,
modif=0xd9965aa0 "") at /build/src/sys/ddb/db_command.c:447
#4  0xc0165d70 in db_command_loop () at
#5  0xc0168344 in db_trap (type=3, code=0) at
#6  0xc04d8bbf in kdb_trap (type=3, code=0, regs=0xd9965b98) at
#7  0xc04ea425 in trap (frame=0xd9965b98) at
#8  0xc04d98d7 in calltrap () at
#9  0xc04d8a6c in Debugger (msg=0xc0552b61 "panic") at
. /cpu/cpufunc.h:73
#10 0xc02e2306 in panic (fmt=0xc0538b37 "assertion: %s in %s") at
#11 0xc0463079 in hammer_free_hmp (mp=0xd270cfd8) at
#12 0xc04631a2 in hammer_vfs_unmount (mp=0xd270cfd8, mntflags=0) at
#13 0xc033087d in dounmount (mp=0xd270cfd8, flags=0) at
#14 0xc0330ace in sys_unmount (uap=0xd9965cf0) at
#15 0xc04e9dc5 in syscall2 (frame=0xd9965d40) at
#16 0xc04d9986 in Xint0x80_syscall () at

The crash dump is available at:
http://www.mathematik.uni-marburg.de/~schmidtm/crash/ but I'm not sure if it
contains any new information.



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