Re: Random memory corruption with 64-bit SMP 2.6.30-rc4

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> Could you run the entire build with LD_BIND_NOW=3D1 set? Does it crash
> anywhere else?

Got a lot further but bash SEGV'd again:

Program terminated with signal 11, Segmentation fault.
[New process 14746]
#0  0x00035ba4 in close_fd_bitmap ()
(gdb) bt
#0  0x00035ba4 in close_fd_bitmap ()
#1  0x00039d08 in ?? ()
#2  0x000373b8 in execute_command_internal ()
#3  0x00036d3c in ?? ()
#4  0x000382a4 in execute_command_internal ()
#5  0x00073a68 in parse_and_execute ()
#6  0x0004d840 in command_substitute ()
#7  0x00051e14 in ?? ()
#8  0x00053320 in ?? ()
#9  0x00056fa8 in expand_string_assignment ()
#10 0x00050f44 in ?? ()
#11 0x000512fc in ?? ()
#12 0x00053278 in ?? ()
#13 0x0003a0a4 in ?? ()
#14 0x000373b8 in execute_command_internal ()
#15 0x00038638 in execute_command ()
#16 0x00038310 in execute_command_internal ()
#17 0x00073a68 in parse_and_execute ()
#18 0x00025a1c in ?? ()
#19 0x000269a8 in main ()

Restarting, and it crashed again:

Core was generated by `/bin/sh ./libtool --tag=CXX --mode=compile /home/dave/gnu/gcc/objdir/./gcc/xgcc'.
Program terminated with signal 11, Segmentation fault.
[New process 32486]
#0  0x00000000 in ?? ()
(gdb) bt
#0  0x00000000 in ?? ()
#1  0x000ab3dc in ?? ()
#2  0x0006e930 in sh_xmalloc ()
#3  0x0004995c in stop_pipeline ()
#4  0x00037cec in execute_command_internal ()
#5  0x00038638 in execute_command ()
#6  0x00038310 in execute_command_internal ()
#7  0x00037a60 in execute_command_internal ()
#8  0x00038638 in execute_command ()
#9  0x000374c4 in execute_command_internal ()
#10 0x00037a60 in execute_command_internal ()
#11 0x00037a60 in execute_command_internal ()
#12 0x000395f8 in ?? ()
#13 0x0003a85c in ?? ()
#14 0x000373b8 in execute_command_internal ()
#15 0x00038638 in execute_command ()
#16 0x00038310 in execute_command_internal ()
#17 0x00037a60 in execute_command_internal ()
#18 0x00038638 in execute_command ()
#19 0x000374c4 in execute_command_internal ()
#20 0x00037a60 in execute_command_internal ()
#21 0x00038638 in execute_command ()
#22 0x00038310 in execute_command_internal ()
---Type <return> to continue, or q <return> to quit---
#23 0x00037a60 in execute_command_internal ()
#24 0x000395f8 in ?? ()
#25 0x0003a85c in ?? ()
#26 0x000373b8 in execute_command_internal ()
#27 0x00038638 in execute_command ()
#28 0x000374c4 in execute_command_internal ()
#29 0x00037a60 in execute_command_internal ()
#30 0x00038638 in execute_command ()
#31 0x000374c4 in execute_command_internal ()
#32 0x00038638 in execute_command ()
#33 0x000279c8 in reader_loop ()
#34 0x0002751c in main For this(gdb) frame 1
#1  0x000ab3dc in ()
(gdb) disass 0x000ab3cc 0x000ab3ec
Dump of assembler code from 0xab3cc to 0xab3ec:
0x000ab3cc:	stw ret0,1c8(r8)
0x000ab3d0:	copy r5,r26
0x000ab3d4:	b,l 0x798d0,rp
0x000ab3d8:	ldi df,r25
0x000ab3dc:	b,l 0xab188,r0
0x000ab3e0:	copy r3,ret0
0x000ab3e4:	ldi -21,ret0
0x000ab3e8:	stb ret0,0(r22)
End of assembler dump
(gdb) p/x $rp
$1 = 0xab3df
(gdb) disass 0x798d0 0x798e0
Dump of assembler code from 0x798d0 to 0x798e0:
0x000798d0:	addil L%5000,dp,r1
0x000798d4:	ldw 524(r1),r21
0x000798d8:	bv r0(r21)
0x000798dc:	ldw 528(r1),r19
End of assembler dump.
(gdb) p/x $dp
$2 = 0xca1c8
(gdb) p/x $r1
$3 = 0xcf1c8
(gdb) p/x $r21
$4 = 0x0
(gdb) p/x $r1+0x524
$5 = 0xcf6ec
(gdb) x/x 0xcf6ec
0xcf6ec:	0x40488250
(gdb) disass 0x40488250
Dump of assembler code for function *__GI_memset:
0x40488250 <*__GI_memset+0>:	cmpib,>>= 7,r24,0x404882f8 <*__GI_memset+168>
0x40488254 <*__GI_memset+4>:	copy r26,r22
0x40488258 <*__GI_memset+8>:	extrw,u r25,31,8,r31
...
(gdb) x/x 0xcf6f0
0xcf6f0:	0x40553f54
(gdb) p/x $r19
$6 = 0x0

Dave
-- 
J. David Anglin                                  dave.anglin@xxxxxxxxxxxxxx
National Research Council of Canada              (613) 990-0752 (FAX: 952-6602)
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