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Subject: RE: TXRX crash on g5r10. need someone from Dev to take a look
Date: Fri, 25 Jan 2008 12:51:41 -0700
Message-ID: <BB375AF679D4A34E9CA8DFA650E2B04E07E5FE9B@onstor-exch02.onstor.net>
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Thread-Topic: TXRX crash on g5r10. need someone from Dev to take a look
Thread-Index: AchfiyDBByMKaIJ1SkatFl+nLmwaFQAAJCaw
References: <BB375AF679D4A34E9CA8DFA650E2B04E07E5FE8A@onstor-exch02.onstor.net>
From: "Maxim Kozlovsky" <maxim.kozlovsky@onstor.com>
To: "Vikas Saini" <vikas.saini@onstor.com>,
	"dl-Cougar" <dl-Cougar@onstor.com>

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I will.

=20

________________________________

From: Vikas Saini=20
Sent: Friday, January 25, 2008 11:48 AM
To: dl-Cougar
Subject: TXRX crash on g5r10. need someone from Dev to take a look

=20

Got a TXRX Crash on g5r10 (10.2.10.5). can someone from Dev take a look.

=20

Thanks

Vikas

=20

=20

=20

=20

=20

[root@vikas-linux nfx-tree]# /n/build-trees/gdb/gdb64
Build/cg/dbg/Images/txrx_cg

GNU gdb 5.1.1

Copyright 2002 Free Software Foundation, Inc.

GDB is free software, covered by the GNU General Public License, and you
are

welcome to change it and/or distribute copies of it under certain
conditions.

Type "show copying" to see the conditions.

There is absolutely no warranty for GDB.  Type "show warranty" for
details.

This GDB was configured as "--host=3Di686-pc-linux-gnu =
--target=3Dmips64"...

The target architecture is assumed to be mips:sb1

Breakpoint 1 at 0xffffffff830b03a8: file Panic.c, line 48.

(gdb) target pmon 10.2.10.5:61230

Remote MIPS debugging using 10.2.10.5:61230

__assert_fail (

    assertion=3D0xffffffff8347c418 "memcmp(buf, bd->buf + bd_offset,
(((remain - verified_this_packet)<(bd->len - bd_offset))?(remain -
verified_this_packet):(bd->len - bd_offset))) =3D=3D 0",
file=3D0xffffffff8347b730 "pkt-queue-api.c", line=3D2427,
function=3D0xffffffff8347c348 "req_copy_dcaches_verify") at debug.c:68

68      debug.c: No such file or directory.

        in debug.c

(gdb) bt

#0  __assert_fail (

    assertion=3D0xffffffff8347c418 "memcmp(buf, bd->buf + bd_offset,
(((remain - verified_this_packet)<(bd->len - bd_offset))?(remain -
verified_this_packet):(bd->len - bd_offset))) =3D=3D 0",
file=3D0xffffffff8347b730 "pkt-queue-api.c", line=3D2427,
function=3D0xffffffff8347c348 "req_copy_dcaches_verify") at debug.c:68

#1  0x8303d0dc in req_copy_dcaches_verify (req=3D

      {v =3D 0x1008f33c00, cifs_hdr =3D 0x1008f33c00, cifs =3D =
0x1008f33c00,
nfs =3D 0x1008f33c00, util =3D 0x1008f33c00, _6 =3D 0x1008f33c00, _7 =3D
0x1008f33c00, nlm =3D 0x1008f33c00}, ctx=3D0x1008f343d8,
already_copied=3D65536) at pkt-queue-api.c:2427

#2  0x8303e8f8 in req_copy_dcaches_proc (req=3D

      {v =3D 0x1008f33c00, cifs_hdr =3D 0x1008f33c00, cifs =3D =
0x1008f33c00,
nfs =3D 0x1008f33c00, util =3D 0x1008f33c00, _6 =3D 0x1008f33c00, _7 =3D
0x1008f33c00, nlm =3D 0x1008f33c00}, ctx=3D0x1008f343d8) at
pkt-queue-api.c:3042

#3  0x832cc820 in req_copy_dcaches (req=3D

      {v =3D 0x1008f33c00, cifs_hdr =3D 0x1008f33c00, cifs =3D =
0x1008f33c00,
nfs =3D 0x1008f33c00, util =3D 0x1008f33c00, _6 =3D 0x1008f33c00, _7 =3D
0x1008f33c00, nlm =3D 0x1008f33c00}, ctx=3D0x1008f343d8, =
pq=3D0x1008f341d0) at
../sm-pkt/pkt-queue-api.h:1693

#4  0x832c25d8 in nfsv3_read_reply (req=3D0x1008f33c00) at
nfs-reply.c:5589

#5  0x834062bc in req_run (reqPtr=3D

      {v =3D 0x1008f33c00, cifs_hdr =3D 0x1008f33c00, cifs =3D =
0x1008f33c00,
nfs =3D 0x1008f33c00, util =3D 0x1008f33c00, _6 =3D 0x1008f33c00, _7 =3D
0x1008f33c00, nlm =3D 0x1008f33c00}) at
../sm-req-queue/req-queue-api.h:614

#6  0x833fd6cc in dcache_read_wait_dcaches_proc (req=3D0x1008f33c00) at
dcache-api.c:1528

#7  0x830d8848 in req_run (reqPtr=3D

      {v =3D 0x1008f33c00, cifs_hdr =3D 0x1008f33c00, cifs =3D =
0x1008f33c00,
nfs =3D 0x1008f33c00, util =3D 0x1008f33c00, _6 =3D 0x1008f33c00, _7 =3D
0x1008f33c00, nlm =3D 0x1008f33c00}) at
../sm-req-queue/req-queue-api.h:614

#8  0x830d7478 in req_poll_queue (queue=3D0xffffffff83ac0a80,
max_requests=3D256) at req-queue-api.c:416

#9  0x83013154 in eee_txrxACPU_poll (num_loops=3D78) at eee-poll.c:364

#10 0x830134a8 in eee_poll (num_loops=3D100) at eee-poll.c:533

#11 0x830ce858 in getchar () at serio-api.c:333

#12 0x830c373c in get_line (p=3D0xffffffff854bbf20 "", usehist=3D1) at
hist.c:145

#13 0x830c3e88 in get_input (p=3D0xffffffff854bbf20 "") at hist.c:259

#14 0x830c3ec0 in get_cmd (p=3D0xffffffff854bbf20 "") at hist.c:284

#15 0x830cd238 in runtime_prompt () at test.c:558

#16 0x834479f0 in smp_entry (a0=3D18446181123756113919, cpu_num=3D1, =
a2=3D0,
a3=3D1128678705) at smp.c:246

warning: Warning: GDB can't find the start of the function at
0xffffffff9fc0afec.

=20

    GDB is unable to find the start of the function at
0xffffffff9fc0afec

and thus can't determine the size of that function's stack frame.

This means that GDB may be unable to access that stack frame, or

the frames below it.

    This problem is most likely caused by an invalid program counter or

stack pointer.

---Type <return> to continue, or q <return> to quit---

    However, if you think GDB should simply search farther back

from 0xffffffff9fc0afec for code which looks like the beginning of a

function, you can increase the range of the search using the `set

heuristic-fence-post' command.

(gdb) pwd

Working directory /n/build-trees/R4.0.0.0/R4.0.0.0-012308/nfx-tree.

(gdb)


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<div class=3DSection1>

<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'>I =
will.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 color=3Dnavy face=3DArial><span =
style=3D'font-size:
10.0pt;font-family:Arial;color:navy'><o:p>&nbsp;</o:p></span></font></p>

<div style=3D'border:none;border-left:solid blue 1.5pt;padding:0in 0in =
0in 4.0pt'>

<div>

<div class=3DMsoNormal align=3Dcenter style=3D'text-align:center'><font =
size=3D3
face=3D"Times New Roman"><span style=3D'font-size:12.0pt'>

<hr size=3D2 width=3D"100%" align=3Dcenter tabindex=3D-1>

</span></font></div>

<p class=3DMsoNormal><b><font size=3D2 face=3DTahoma><span =
style=3D'font-size:10.0pt;
font-family:Tahoma;font-weight:bold'>From:</span></font></b><font =
size=3D2
face=3DTahoma><span style=3D'font-size:10.0pt;font-family:Tahoma'> Vikas =
Saini <br>
<b><span style=3D'font-weight:bold'>Sent:</span></b> Friday, January 25, =
2008
11:48 AM<br>
<b><span style=3D'font-weight:bold'>To:</span></b> dl-Cougar<br>
<b><span style=3D'font-weight:bold'>Subject:</span></b> TXRX crash on =
g5r10. need
someone from Dev to take a look</span></font><o:p></o:p></p>

</div>

<p class=3DMsoNormal><font size=3D3 face=3D"Times New Roman"><span =
style=3D'font-size:
12.0pt'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Got a TXRX Crash on g5r10 (10.2.10.5). can someone =
from Dev
take a look.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Thanks<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Vikas<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>[root@vikas-linux nfx-tree]# /n/build-trees/gdb/gdb64
Build/cg/dbg/Images/txrx_cg<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>GNU gdb 5.1.1<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Copyright 2002 Free Software Foundation, =
Inc.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>GDB is free software, covered by the GNU General =
Public
License, and you are<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>welcome to change it and/or distribute copies of it =
under
certain conditions.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Type &quot;show copying&quot; to see the =
conditions.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>There is absolutely no warranty for GDB.&nbsp; Type
&quot;show warranty&quot; for details.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>This GDB was configured as =
&quot;--host=3Di686-pc-linux-gnu
--target=3Dmips64&quot;...<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>The target architecture is assumed to be =
mips:sb1<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Breakpoint 1 at 0xffffffff830b03a8: file Panic.c, =
line 48.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>(gdb) target pmon =
10.2.10.5:61230<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Remote MIPS debugging using =
10.2.10.5:61230<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>__assert_fail (<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>&nbsp;&nbsp;&nbsp; assertion=3D0xffffffff8347c418
&quot;memcmp(buf, bd-&gt;buf + bd_offset, (((remain -
verified_this_packet)&lt;(bd-&gt;len - bd_offset))?(remain -
verified_this_packet):(bd-&gt;len - bd_offset))) =3D=3D 0&quot;,
file=3D0xffffffff8347b730 &quot;pkt-queue-api.c&quot;, line=3D2427,
function=3D0xffffffff8347c348 &quot;req_copy_dcaches_verify&quot;) at =
debug.c:68<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>68&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; debug.c: No such =
file or
directory.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; in =
debug.c<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>(gdb) bt<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>#0&nbsp; __assert_fail (<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>&nbsp;&nbsp;&nbsp; assertion=3D0xffffffff8347c418
&quot;memcmp(buf, bd-&gt;buf + bd_offset, (((remain -
verified_this_packet)&lt;(bd-&gt;len - bd_offset))?(remain -
verified_this_packet):(bd-&gt;len - bd_offset))) =3D=3D 0&quot;,
file=3D0xffffffff8347b730 &quot;pkt-queue-api.c&quot;, line=3D2427,
function=3D0xffffffff8347c348 &quot;req_copy_dcaches_verify&quot;) at =
debug.c:68<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>#1&nbsp; 0x8303d0dc in req_copy_dcaches_verify =
(req=3D<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; {v =3D 0x1008f33c00, =
cifs_hdr =3D
0x1008f33c00, cifs =3D 0x1008f33c00, nfs =3D 0x1008f33c00, util =3D =
0x1008f33c00, _6
=3D 0x1008f33c00, _7 =3D 0x1008f33c00, nlm =3D 0x1008f33c00}, =
ctx=3D0x1008f343d8,
already_copied=3D65536) at =
pkt-queue-api.c:2427<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>#2&nbsp; 0x8303e8f8 in req_copy_dcaches_proc =
(req=3D<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; {v =3D 0x1008f33c00, =
cifs_hdr =3D
0x1008f33c00, cifs =3D 0x1008f33c00, nfs =3D 0x1008f33c00, util =3D =
0x1008f33c00, _6
=3D 0x1008f33c00, _7 =3D 0x1008f33c00, nlm =3D 0x1008f33c00}, =
ctx=3D0x1008f343d8) at
pkt-queue-api.c:3042<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>#3&nbsp; 0x832cc820 in req_copy_dcaches =
(req=3D<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; {v =3D 0x1008f33c00, =
cifs_hdr =3D
0x1008f33c00, cifs =3D 0x1008f33c00, nfs =3D 0x1008f33c00, util =3D =
0x1008f33c00, _6
=3D 0x1008f33c00, _7 =3D 0x1008f33c00, nlm =3D 0x1008f33c00}, =
ctx=3D0x1008f343d8,
pq=3D0x1008f341d0) at =
../sm-pkt/pkt-queue-api.h:1693<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>#4&nbsp; 0x832c25d8 in nfsv3_read_reply =
(req=3D0x1008f33c00)
at nfs-reply.c:5589<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>#5&nbsp; 0x834062bc in req_run =
(reqPtr=3D<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; {v =3D 0x1008f33c00, =
cifs_hdr =3D
0x1008f33c00, cifs =3D 0x1008f33c00, nfs =3D 0x1008f33c00, util =3D =
0x1008f33c00, _6
=3D 0x1008f33c00, _7 =3D 0x1008f33c00, nlm =3D 0x1008f33c00}) at
../sm-req-queue/req-queue-api.h:614<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>#6&nbsp; 0x833fd6cc in dcache_read_wait_dcaches_proc
(req=3D0x1008f33c00) at dcache-api.c:1528<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>#7&nbsp; 0x830d8848 in req_run =
(reqPtr=3D<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; {v =3D 0x1008f33c00, =
cifs_hdr =3D
0x1008f33c00, cifs =3D 0x1008f33c00, nfs =3D 0x1008f33c00, util =3D =
0x1008f33c00, _6
=3D 0x1008f33c00, _7 =3D 0x1008f33c00, nlm =3D 0x1008f33c00}) at
../sm-req-queue/req-queue-api.h:614<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>#8&nbsp; 0x830d7478 in req_poll_queue =
(queue=3D0xffffffff83ac0a80,
max_requests=3D256) at req-queue-api.c:416<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>#9&nbsp; 0x83013154 in eee_txrxACPU_poll =
(num_loops=3D78) at
eee-poll.c:364<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>#10 0x830134a8 in eee_poll (num_loops=3D100) at =
eee-poll.c:533<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>#11 0x830ce858 in getchar () at =
serio-api.c:333<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>#12 0x830c373c in get_line (p=3D0xffffffff854bbf20
&quot;&quot;, usehist=3D1) at hist.c:145<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>#13 0x830c3e88 in get_input (p=3D0xffffffff854bbf20
&quot;&quot;) at hist.c:259<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>#14 0x830c3ec0 in get_cmd (p=3D0xffffffff854bbf20
&quot;&quot;) at hist.c:284<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>#15 0x830cd238 in runtime_prompt () at =
test.c:558<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>#16 0x834479f0 in smp_entry =
(a0=3D18446181123756113919,
cpu_num=3D1, a2=3D0, a3=3D1128678705) at =
smp.c:246<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>warning: Warning: GDB can't find the start of the =
function
at 0xffffffff9fc0afec.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'><o:p>&nbsp;</o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>&nbsp;&nbsp;&nbsp; GDB is unable to find the start of =
the
function at 0xffffffff9fc0afec<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>and thus can't determine the size of that function's =
stack
frame.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>This means that GDB may be unable to access that =
stack
frame, or<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>the frames below it.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>&nbsp;&nbsp;&nbsp; This problem is most likely caused =
by an
invalid program counter or<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>stack pointer.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>---Type &lt;return&gt; to continue, or q =
&lt;return&gt; to
quit---<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>&nbsp;&nbsp;&nbsp; However, if you think GDB should =
simply
search farther back<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>from 0xffffffff9fc0afec for code which looks like the
beginning of a<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>function, you can increase the range of the search =
using the
`set<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>heuristic-fence-post' =
command.<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>(gdb) pwd<o:p></o:p></span></font></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>Working directory
/n/build-trees/R4.0.0.0/R4.0.0.0-012308/nfx-tree.<o:p></o:p></span></font=
></p>

<p class=3DMsoNormal><font size=3D2 face=3DArial><span =
style=3D'font-size:10.0pt;
font-family:Arial'>(gdb)<o:p></o:p></span></font></p>

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