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Date:      Thu, 20 Jun 2002 15:07:56 +0800
From:      "kai ouyang" <oykai@msn.com>
To:        "Scott Long" <scott_long@btc.adaptec.com>, <current@FreeBSD.org>, "Terry Lambert" <tlambert2@mindspring.com>
Subject:   Debug report
Message-ID:  <OE335q8awYFDIfWb4Sa000046ce@hotmail.com>
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Dear Scott and Terry, =20
  Thank your help very much!
When I configured the 'raid0' device, I excute 'raidctl -s raid0'.
The system info:
kernel: type 12 trap, code=3D0
Stopped at InitBP+0x64: movl %eax, 0xec(%edx)
db>
I type 'trace'
there are :
InitBP(cdbccf00,cdb92960,2,c1bc1500,40,0,1,0, c1cae200,c0170440,c1cb3800,=
9) at InitBP+0x64
................
Context switches not allowed in the debugger.
db>

I have no experience on kernel debug. I do not know that means what.

There is the function InitBP I modified to support Current. Could you hel=
p me to check?
 static void =20
InitBP(bp, b_vp, rw_flag, dev, startSect, numSect, buf, cbFunc, cbArg,
       logBytesPerSector)
 struct bio *bp;
 struct vnode *b_vp;
 unsigned rw_flag;
 dev_t dev;
 RF_SectorNum_t startSect;
 RF_SectorCount_t numSect;
 caddr_t buf;
 void (*cbFunc) (struct bio *);
 void *cbArg;
 int logBytesPerSector;
{
 /* bp->b_flags       =3D B_PHYS | rw_flag; */
 /*bp->bio_flags =3D B_CALL | rw_flag;  XXX need B_PHYS here too? */
 =20
 bp->bio_bcount =3D numSect << logBytesPerSector;
 bp->bio_caller1 =3D(void *) bp->bio_bcount;
 bp->bio_error =3D 0;
 bp->bio_dev =3D dev;
 bp->bio_data =3D buf;
 bp->bio_blkno =3D startSect;
 bp->bio_resid =3D bp->bio_bcount; /* XXX is this right!?!?!! */
 if (bp->bio_bcount =3D=3D 0) {
  panic("bp->b_bcount is zero in InitBP!!\n");
 }
 bp->bio_done =3D cbFunc;
 bp->_bio_buf->b_vp =3D b_vp;
}

If you have no spare time to do that, Could you give me your Current patc=
h, I can learn and analyse the difference.=B4=D3=CD=F8=D5=BE=B5=C3=B5=BD=B8=
=FC=B6=E0=D0=C5=CF=A2=A1=A3MSN Explorer =C3=E2=B7=D1=CF=C2=D4=D8:http://e=
xplorer.msn.com/lccn

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<HTML><BODY STYLE=3D"font:10pt verdana; border:none;"><DIV>Dear&nbsp;Scot=
t and Terry, </DIV> <DIV>&nbsp; Thank your help very much!</DIV> <DIV>Whe=
n I configured the 'raid0' device, I excute 'raidctl -s raid0'.</DIV> <DI=
V>The system info:</DIV> <DIV>kernel: type 12 trap, code=3D0</DIV> <DIV>S=
topped at InitBP+0x64: movl %eax, 0xec(%edx)</DIV> <DIV>db&gt;</DIV> <DIV=
>I type 'trace'</DIV> <DIV>there are :</DIV> <DIV>InitBP(cdbccf00,cdb9296=
0,2,c1bc1500,40,0,1,0, c1cae200,c0170440,c1cb3800,9) at InitBP+0x64</DIV>=
 <DIV>................</DIV> <DIV>Context switches not allowed in the deb=
ugger.</DIV> <DIV>db&gt;</DIV> <DIV>&nbsp;</DIV> <DIV>I have no experienc=
e on kernel debug. I do not know that means what.</DIV> <DIV>&nbsp;</DIV>=
 <DIV>There is the function InitBP I modified to support Current. Could y=
ou help me to check?</DIV> <DIV> static void <BR>InitBP(bp, b_vp, rw_flag=
, dev, startSect, numSect, buf, cbFunc, cbArg,<BR>&nbsp;&nbsp;&nbsp;&nbsp=
;&nbsp;&nbsp; logBytesPerSector)<BR>&nbsp;struct bio *bp;<BR>&nbsp;struct=
 vnode *b_vp;<BR>&nbsp;unsigned rw_flag;<BR>&nbsp;dev_t dev;<BR>&nbsp;RF_=
SectorNum_t startSect;<BR>&nbsp;RF_SectorCount_t numSect;<BR>&nbsp;caddr_=
t buf;<BR>&nbsp;void (*cbFunc) (struct bio *);<BR>&nbsp;void *cbArg;<BR>&=
nbsp;int logBytesPerSector;<BR>{<BR>&nbsp;/* bp-&gt;b_flags&nbsp;&nbsp;&n=
bsp;&nbsp;&nbsp;&nbsp; =3D B_PHYS | rw_flag; */<BR>&nbsp;/*bp-&gt;bio_fla=
gs =3D B_CALL | rw_flag;&nbsp; XXX need B_PHYS here too? */<BR>&nbsp;<BR>=
&nbsp;bp-&gt;bio_bcount =3D numSect &lt;&lt; logBytesPerSector;<BR>&nbsp;=
bp-&gt;bio_caller1 =3D(void *) bp-&gt;bio_bcount;<BR>&nbsp;bp-&gt;bio_err=
or =3D 0;<BR>&nbsp;bp-&gt;bio_dev =3D dev;<BR>&nbsp;bp-&gt;bio_data =3D b=
uf;<BR>&nbsp;bp-&gt;bio_blkno =3D startSect;<BR>&nbsp;bp-&gt;bio_resid =3D=
 bp-&gt;bio_bcount;&nbsp;/* XXX is this right!?!?!! */<BR>&nbsp;if (bp-&g=
t;bio_bcount =3D=3D 0) {<BR>&nbsp;&nbsp;panic("bp-&gt;b_bcount is zero in=
 InitBP!!\n");<BR>&nbsp;}</DIV> <DIV>&nbsp;bp-&gt;bio_done =3D cbFunc;<BR=
>&nbsp;bp-&gt;_bio_buf-&gt;b_vp =3D b_vp;<BR>}</DIV> <DIV>&nbsp;</DIV> <D=
IV>If you have no spare time to do that, Could you give me your Current p=
atch, I can learn and analyse the difference.<BR><BR></DIV></BODY></HTML>=
<br clear=3Dall><hr>=B4=D3=CD=F8=D5=BE=B5=C3=B5=BD=B8=FC=B6=E0=D0=C5=CF=A2=
=A1=A3MSN Explorer =C3=E2=B7=D1=CF=C2=D4=D8=A3=BA<a href=3D'http://explor=
er.msn.com/lccn'>http://explorer.msn.com/lccn</a><br></p>;

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Dear Scott and Terry, =20
  Thank your help very much!
When I configured the 'raid0' device, I excute 'raidctl -s raid0'.
The system info:
kernel: type 12 trap, code=3D0
Stopped at InitBP+0x64: movl %eax, 0xec(%edx)
db>
I type 'trace'
there are :
InitBP(cdbccf00,cdb92960,2,c1bc1500,40,0,1,0, c1cae200,c0170440,c1cb3800,=
9) at InitBP+0x64
................
Context switches not allowed in the debugger.
db>

I have no experience on kernel debug. I do not know that means what.

There is the function InitBP I modified to support Current. Could you hel=
p me to check?
 static void =20
InitBP(bp, b_vp, rw_flag, dev, startSect, numSect, buf, cbFunc, cbArg,
       logBytesPerSector)
 struct bio *bp;
 struct vnode *b_vp;
 unsigned rw_flag;
 dev_t dev;
 RF_SectorNum_t startSect;
 RF_SectorCount_t numSect;
 caddr_t buf;
 void (*cbFunc) (struct bio *);
 void *cbArg;
 int logBytesPerSector;
{
 /* bp->b_flags       =3D B_PHYS | rw_flag; */
 /*bp->bio_flags =3D B_CALL | rw_flag;  XXX need B_PHYS here too? */
 =20
 bp->bio_bcount =3D numSect << logBytesPerSector;
 bp->bio_caller1 =3D(void *) bp->bio_bcount;
 bp->bio_error =3D 0;
 bp->bio_dev =3D dev;
 bp->bio_data =3D buf;
 bp->bio_blkno =3D startSect;
 bp->bio_resid =3D bp->bio_bcount; /* XXX is this right!?!?!! */
 if (bp->bio_bcount =3D=3D 0) {
  panic("bp->b_bcount is zero in InitBP!!\n");
 }
 bp->bio_done =3D cbFunc;
 bp->_bio_buf->b_vp =3D b_vp;
}

If you have no spare time to do that, Could you give me your Current patc=
h, I can learn and analyse the difference.

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