Hi,
After a bit digging, I found out that the 2.9GB of request is made by
/system/bin/linker (it failed on the check_mmap of the interpreter -
somewhere in switch case PT_INTERP). I will dig deeper and post here what I
found but if someone has something that can help, please post it here. I's
suspecting that the culprit here is the Android's linker and not the test
program itself.
On Mon, May 2, 2011 at 9:38 PM, John Reiser <[email protected]> wrote:
> > /data # strace valgrind --tool=none ./hello-arm-bionic
> [snip]
> > mmap2(0x8000, 4096, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_FIXED, 3, 0) =
> 0x8000
> > fstat64(3, {st_mode=S_IFREG|0777, st_size=6788, ...}) = 0
> > readlink("/proc/self/fd/3", "/data/hello-arm-bionic", 4096) = 22
> > mmap2(0x9000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED, 3, 0x1)
> = 0x9000
> > fstat64(3, {st_mode=S_IFREG|0777, st_size=6788, ...}) = 0
> > readlink("/proc/self/fd/3", "/data/hello-arm-bionic", 4096) = 22
> > write(2, "valgrind: mmap(0x0, 2952865436) "..., 80valgrind: mmap(0x0,
> 2952865436) failed in UME with error 22 (Invalid argument).
>
> At the lowest level, a request such as mmap(0, 2.9GB, ...) is too large on
> any 32-bit system.
> There is at most 3GB of user address space (at least 1GB of the 4GB is for
> the operating system);
> valgrind and the app must share that 3GB together. Does the app normally
> want 2.9GB?
> In general don't count on anything more than 1.2GB or so.
>
> Also, /data/hello-arm-bionic probably is the same as the executable
> ./hello-arm-bionic,
> so all that readlink() and mmap2() probably are connected with
> execve("/proc/self/exe", ...)
> which is known not to work in valgrind. Instead, find the original name
> via the
> AT_EXECFN tag in Elf32_auxv_t.
>
> --
>
>
> ------------------------------------------------------------------------------
> WhatsUp Gold - Download Free Network Management Software
> The most intuitive, comprehensive, and cost-effective network
> management toolset available today. Delivers lowest initial
> acquisition cost and overall TCO of any competing solution.
> http://p.sf.net/sfu/whatsupgold-sd
> _______________________________________________
> Valgrind-users mailing list
> [email protected]
> https://lists.sourceforge.net/lists/listinfo/valgrind-users
>
--
Wan Mohd Fairuz WAN ISMAIL
OMAP System Multimedia Integration Team (Trainee)
Texas Instrument France
[email protected]
+33 (0)4 93 22 20 16
+33 (0)6 43 46 13 39
15 Le Palais des Fleurs,
74 Boulevard Raymond Poincare,
06160 Juan les Pins, FRANCE.
http://www.watt.com.my
+6 017 2071591
------------------------------------------------------------------------------
WhatsUp Gold - Download Free Network Management Software
The most intuitive, comprehensive, and cost-effective network
management toolset available today. Delivers lowest initial
acquisition cost and overall TCO of any competing solution.
http://p.sf.net/sfu/whatsupgold-sd
_______________________________________________
Valgrind-users mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/valgrind-users
