GNU gdb 6.8
Copyright (C) 2008 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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There is NO WARRANTY, to the extent permitted by law.  Type "show copying"
and "show warranty" for details.
This GDB was configured as "hppa2.0-unknown-linux-gnu"...
Reading symbols from /lib/libc.so.6...Reading symbols from /mnt/alt/debug/lib/libc-2.7.so.debug...done.
done.
Loaded symbols for /lib/libc.so.6
Reading symbols from /lib/ld.so.1...Reading symbols from /mnt/alt/debug/lib/ld-2.7.so.debug...done.
done.
Loaded symbols for /lib/ld.so.1
Core was generated by `strace ls'.
Program terminated with signal 11, Segmentation fault.
[New process 10801]
#0  0x00039dc8 in __canonicalize_funcptr_for_compare ()
(gdb) thread apply all bt full

Thread 1 (process 10801):
#0  0x00039dc8 in __canonicalize_funcptr_for_compare ()
No symbol table info available.
#1  0x000333b8 in sys_rt_sigaction (tcp=0x5d018) at signal.c:1886
	sa = {__sigaction_handler = {__sa_handler = <error reading variable>, 
    __sa_sigaction = <error reading variable>}, sa_flags = 16, 
  sa_restorer = 0, sa_mask = {0, 0}}
	sigset = {__val = {1074948472, 380936, 4211291712, 110295, 1083179008, 
    0, 1, 0, 4211291840, 270201304, 4210656464, 4211291868, 2164326656, 
    4211291800, 255132, 10802, 1076563220, 0, 0, 103699, 0, 0, 0, 122592, 
    4211291840, 4211291840, 255135, 4211291804, 0, 1, 10802, 3}}
	addr = -84310840
#2  0x0001bc58 in trace_syscall (tcp=0x5d018) at syscall.c:2558
	sys_res = 380952
	tv = {tv_sec = 380936, tv_usec = -83675904}
	res = 1
#3  0x000192ac in trace () at strace.c:2475
	pid = 10802
	wait_errno = 0
	status = 1407
	tcp = (struct tcb *) 0x5d018
	ru = {ru_utime = {tv_sec = 0, tv_usec = 0}, ru_stime = {tv_sec = 0, 
    tv_usec = 0}, ru_maxrss = 0, ru_ixrss = 0, ru_idrss = 0, ru_isrss = 0, 
  ru_minflt = 0, ru_majflt = 0, ru_nswap = 0, ru_inblock = 0, ru_oublock = 0, 
  ru_msgsnd = 0, ru_msgrcv = 0, ru_nsignals = 0, ru_nvcsw = 0, ru_nivcsw = 0}
	wait4_options = 1073741824
#4  0x0001742c in main (argc=2, argv=0xfb03301c) at strace.c:879
	tcp = (struct tcb *) 0x5d1f8
	c = -1
	pid = 0
	optF = 0
	sa = {__sigaction_handler = {sa_handler = 0, sa_sigaction = 0}, 
  sa_flags = 0, sa_mask = {__val = {0 <repeats 32 times>}}}
	buf = "rt_sigaction(SIGRTMIN, _WAKE_PRIVATE, 1 0xfaf98028, 0xfaf98028, 0x409f37a8ED|MAP_ANONYMOUS, -1, 01c00000", '\0' <repeats 8087 times>
(gdb) quit