Re: mutt/libc? problems after recent sid upgrade

[Lee Bradshaw <lee@sectionIV.com>]

On Thu, Jan 09, 2003 at 03:34:32PM -0500, Bart Trojanowski wrote:
> OK, we need to find out what is calling the offending libc call.  Can
> you make it crash while running in gdb and brovide us with the backtrace
> (gdb command 'bt')?

On Thu, Jan 09, 2003 at 03:35:05PM -0500, H. S. Teoh wrote:
> This looks like a regex bug in libc. See #175163.

Yes, there seems to be an infinite recursion in re_comp(). When I just
kept Enter pressed in gdb, it kept displaying the same address at least
to #10000 (when I stopped).

This computer has the libc6 2.3.1-9 package installed.

Thanks for the help.


gdb mutt
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This GDB was configured as "i386-linux"...(no debugging symbols found)...
(gdb) run
Starting program: /usr/bin/mutt 
(no debugging symbols found)...(no debugging symbols found)...
(no debugging symbols found)...(no debugging symbols found)...
(no debugging symbols found)...(no debugging symbols found)...
(B)0[?1049h[?1h=(no debugging symbols found)...(no debugging symbols found)...
(no debugging symbols found)...(no debugging symbols found)...
[?1049l
[?1l>(no debugging symbols found)...
Program received signal SIGSEGV, Segmentation fault.
0x400d7bea in mallopt () from /lib/libc.so.6
(gdb) bt
#0  0x400d7bea in mallopt () from /lib/libc.so.6
#1  0x400d6fed in malloc () from /lib/libc.so.6
#2  0x4011c182 in re_exec () from /lib/libc.so.6
#3  0x4011c90b in re_exec () from /lib/libc.so.6
#4  0x40112638 in re_comp () from /lib/libc.so.6
#5  0x4011265f in re_comp () from /lib/libc.so.6
#6  0x4011265f in re_comp () from /lib/libc.so.6
#7  0x4011265f in re_comp () from /lib/libc.so.6
#8  0x4011265f in re_comp () from /lib/libc.so.6
#9  0x4011265f in re_comp () from /lib/libc.so.6
#10 0x4011265f in re_comp () from /lib/libc.so.6
#11 0x4011265f in re_comp () from /lib/libc.so.6
#12 0x4011265f in re_comp () from /lib/libc.so.6
#13 0x4011265f in re_comp () from /lib/libc.so.6
#14 0x4011265f in re_comp () from /lib/libc.so.6
#15 0x4011265f in re_comp () from /lib/libc.so.6
#16 0x4011265f in re_comp () from /lib/libc.so.6
#17 0x4011265f in re_comp () from /lib/libc.so.6
#18 0x4011265f in re_comp () from /lib/libc.so.6
#19 0x4011265f in re_comp () from /lib/libc.so.6
#20 0x4011265f in re_comp () from /lib/libc.so.6
#21 0x4011265f in re_comp () from /lib/libc.so.6
#22 0x4011265f in re_comp () from /lib/libc.so.6
#23 0x4011265f in re_comp () from /lib/libc.so.6
---Type <return> to continue, or q <return> to quit---q
Quit
(gdb) quit
A debugging session is active.
Do you still want to close the debugger?(y or n) y
freefall ~ $ exit

-- 
Lee Bradshaw                 lee@sectionIV.com
Texas Instruments            bradshaw@ti.com
GnuPG D8C3BBD2  CC08 D690 0B70 3C70 351E  EB05 96A3 3789 D8C3 BBD2