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Date:      Wed, 22 Mar 2000 09:40:30 +0100
From:      Poul-Henning Kamp <phk@critter.freebsd.dk>
To:        Peter Wemm <peter@netplex.com.au>
Cc:        Stephen Hocking-Senior Programmer PGS SPS Perth <shocking@prth.pgs.com>, current@FreeBSD.ORG
Subject:   Re: Another current crash (cvs-cur.6183 
Message-ID:  <30423.953714430@critter.freebsd.dk>
In-Reply-To: Your message of "Tue, 21 Mar 2000 17:47:16 PST." <20000322014716.A8C561CC9@overcee.netplex.com.au> 

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Fixed.  The swap_pager "knew" that B_WRITE was zero.  Not nice.

In message <20000322014716.A8C561CC9@overcee.netplex.com.au>, Peter Wemm writes
:
>Stephen Hocking-Senior Programmer PGS SPS Perth wrote:
>
>This one you need to tell phk about: this is one of his sanity checks
>that trapped and found an insane value. (and then crashed since you didn't
>have DDB)
>
>> #8  0xc0255f21 in Debugger (msg=0xc027b1e8 "d_iocmd botch")
>>     at machine/cpufunc.h:64
>> #9  0xc017385e in spec_strategy (ap=0xc5988df8)
>>     at ../../miscfs/specfs/spec_vnops.c:438
>> #10 0xc0173325 in spec_vnoperate (ap=0xc5988df8)
>>     at ../../miscfs/specfs/spec_vnops.c:117
>> #11 0xc020c3bd in ufs_vnoperatespec (ap=0xc5988df8)
>>     at ../../ufs/ufs/ufs_vnops.c:2301
>> #12 0xc0219167 in swapdev_strategy (ap=0xc5988e30) at vnode_if.h:923
>> #13 0xc020d80e in swap_pager_putpages (object=0xc02f9ea0, m=0xc5988ee0, 
>>     count=1, sync=0, rtvals=0xc5988e74) at vnode_if.h:923
>> #14 0xc020c427 in default_pager_putpages (object=0xc02f9ea0, m=0xc5988ee0, 
>>     c=1, sync=0, rtvals=0xc5988e74) at ../../vm/default_pager.c:133
>> #15 0xc02175ea in vm_pageout_flush (mc=0xc5988ee0, count=1, flags=0)
>>     at ../../vm/vm_pager.h:145
>> #16 0xc021754d in vm_pageout_clean (m=0xc0464ae0) at ../../vm/vm_pageout.c:33
>    8
>> #17 0xc0217e6e in vm_pageout_scan () at ../../vm/vm_pageout.c:914
>> #18 0xc0218764 in vm_pageout () at ../../vm/vm_pageout.c:1350
>> #19 0xc02565e0 in fork_trampoline ()
>
>
>Cheers,
>-Peter
>--
>Peter Wemm - peter@FreeBSD.org; peter@yahoo-inc.com; peter@netplex.com.au
>"All of this is for nothing if we don't go to the stars" - JMS/B5
>
>

--
Poul-Henning Kamp             FreeBSD coreteam member
phk@FreeBSD.ORG               "Real hackers run -current on their laptop."
FreeBSD -- It will take a long time before progress goes too far!


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