[Bug backtrace/10310] (GNU/Linux:GCC:C lang: ARM platform) Core dump backtrace on stripped binaries Halts in 2 levels

["informkarthik at gmail dot com" <sourceware-bugzilla@sourceware.org>]

------- Additional Comments From informkarthik at gmail dot com  2009-06-23 07:03 -------
(In reply to comment #0)
> Backtrace on stripped binaries in ARM platform do not go beyond two levels. gdb
> throws 'identical frame' (corrupt stack) message. Noticed that gdb takes the
> path of stack unwinding using frame pointer and standard stack frame structure.
> How reliable is this?
> 
> Steps to reproduce: 
> 1) Just build using the following compiler options 
> -mabi=aapcs-linux -mno-thumb-interwork -fno-strict-aliasing -fno-common -Os
> -fno-strict-aliasing -fno-common -marm -mhard-float -mfloat-abi=softfp -mfpu=vfp
> -mno-sched-prolog  -march=armv5te -mtune=marvell-f -fno-optimize-sibling-calls
> -fno-stack-protector -fno-omit-frame-pointer  -fPIC.
> 2) send sigsegv or sigabrt to the app.
> 3) core dumped.
> 4) arm-none-linux-gnueabi-gdb app core
> 5) bt gives only two levels of addresses and halts with the message
> previous frame identical to this frame (corrupt stack?).
> ---
> Noticed similar output in my x86 setup also.. except that it prints the same
> couple of addresses twice before exiting with the 'identical frame' message.
I see it even in unstripped binaries right now.. it looks like this
(gdb) bt
#0  0x00008344 in temp3 ()
#1  0x00008358 in temp2 ()
#2  0x00008358 in temp2 ()
#3  0x00008370 in temp1 ()
#4  0x000083a0 in main ()

Look at temp2. Note all the funtions just call the next function and do nothing
else. temp3 has while(1) in it so that i can send a signal and get core dump.
The stack looks like the following:
(gdb) x/16w $sp-12
0x56d7dd34:     0x00008294      0x00000000      0x00000000      0x56d7dd4c
0x56d7dd44:     0x00008358      0x56d7dd54      0x00008370      0x56d7dd64
0x56d7dd54:     0x000083a0      0x00000005      0x40024e00      0x00000000
0x56d7dd64:     0x4003aff4      0x40153000      0x56d7deb4      0x00000001



-- 
           What    |Removed                     |Added
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             Status|UNCONFIRMED                 |NEW
     Ever Confirmed|                            |1


http://sourceware.org/bugzilla/show_bug.cgi?id=10310

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