Re: [Valgrind-users] valgrind out of memory error

[Zhu, Y. <Yan...@vi...>]

What argument should I give to strace in order to get syscall args?

Yanwen

-----Original Message-----
From: Philippe Waroquiers [mailto:phi...@sk...] 
Sent: Friday, April 10, 2015 5:33 PM
To: Zhu, Yanwen
Cc: val...@li...
Subject: RE: [Valgrind-users] valgrind out of memory error

On Fri, 2015-04-10 at 21:24 +0000, Zhu, Yanwen wrote:
> Philippe,
> 
> Please see the attached file for
> strace -f valgrind -v -v -v -d -d -d
> output
The trace confirms that the mmap syscall is failing:
n64_write(--1953:1:main     Starting the dynamic memory manager
)                             = 54
n64_mmap()                              = -1 EINVAL (Invalid argument)

But we do not see the syscall args.
Maybe you need to give an argument to strace to have them ?


A possible cause could be the page size: as I understand, mips have different page size setup.
If your valgrind has  been compiled with a  pagesize not matching your kernel/setup, then maybe Valgrind might ask wrongly aligned mmap requests, giving then this EINVAL

You could then configure/compile valgrind, specifying the correct page size e.g. use the below configure option:
  --with-pagesize=        override detected page size (4, 16 or 64)

Philippe