Date: Wed, 23 Oct 2002 10:51:07 -0400 (EDT) From: John Baldwin <jhb@FreeBSD.org> To: Terry Lambert <tlambert2@mindspring.com> Cc: current@freebsd.org, Vitaly Markitantov <vm@dics.com.ua>, Maxime Henrion <mux@freebsd.org>, kalts@estpak.ee Subject: Re: smbfs broken? Message-ID: <XFMail.20021023105107.jhb@FreeBSD.org> In-Reply-To: <3DB664D0.FE0B8018@mindspring.com>
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On 23-Oct-2002 Terry Lambert wrote:
> Vallo Kallaste wrote:
>> > I don't understand, then. There should be no other way that an ffs_write
>> > call can trap to needing an SMBFS page:
>> >
>> > #22 0xc03902a8 in calltrap () at {standard input}:99
>> > #23 0xc033af01 in ffs_write (ap=0xd66ebbe8) at ../../../ufs/ffs/ffs_vnops.c:810
>> > #24 0xc029b74d in vn_write (fp=0xc40341a4, uio=0xd66ebc68,
>> > active_cred=0xc4251d00, flags=0, td=0xc13534e0) at vnode_if.h:417
>> > #25 0xc0259a75 in dofilewrite (td=0xc13534e0, fp=0xc40341a4, fd=4,
>> > buf=0x2805b000, nbyte=0, offset=0, flags=0) at file.h:215
>> > #26 0xc0259909 in write (td=0xc13534e0, uap=0xd66ebd10)
>> > at ../../../kern/sys_generic.c:329
>> > ---
>> >
>> > You *must* be doing something that causes an SMBFS object to act as
>> > backing store for an FFS.
>>
>> You know better, sure, but nevertheless I'm not doing anything what
>> can cause it. Perhaps a bug somewhere.
>
> My guess is in the "?" routines that you didn't backtrace for us;
> perhaps what happened was that the stack frame screwed up, and
> implicated code that was not a fault.
Umm, guys. The code was dereferencing NULL pointers in the mbchain
code which was fixed yesterday. Please test it out with the fixed
mbchains code.
--
John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve!" - http://www.FreeBSD.org/
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