Re: [LTP] shmat failure on ARM (Xscale) Arch.

[Shane V. <sha...@gm...>]

Subrata,
It still fails with Roy's patch.
Regards,
Shane

On Wed, May 14, 2008 at 11:30 AM, Subrata Modak <tos...@gm...> wrote:
> Just see whether Roy Lee´s Patch solves your problem.
>
> Regards--
> Subrata
>
>
>
> On Wed, May 14, 2008 at 8:46 PM, Shane Volpe <sha...@gm...> wrote:
>
> >
> >
> >
> > I'm getting the following failure on my Xscale (ARM) board
> >
> > shmt09      1  PASS  :  sbrk, sbrk, shmget, shmat
> > shmt09      2  PASS  :  sbrk, shmat
> > shmat: Invalid argument
> > shmt09      3  FAIL  :  Error: shmat Failed, shmid = 1409024, errno = 29
> >
> > The following is the suspect code (around line 160):
> >
> > #ifdef __mips__
> >    vp = (void *)((char *)sbrk(0) + 256 * K_1);
> > #elif  defined(__powerpc__) || defined(__powerpc64__)
> >    vp = (void *)((char *)sbrk(0) + getpagesize());
> > #else
> >    /* SHM_RND rounds vp on the nearest multiple of SHMLBA */
> >    vp = (void *)SHMALIGN((char *)sbrk(0) + 1);
> >  #endif
> >
> >  c3 = (char *)shmat(shmid, vp, SHM_RND);
> >
> > It looks like vp is providing an invalid argument to shmat.
> >
> > I ran the test with vp set to the following and added printf's to
> > return "vp" and sbrk(0) values:
> >
> > Debug Case 1:
> > vp = (void *)SHMALIGN((char *)sbrk(0) + 1);
> >        The variable "vp" returns: vp =  0x1d000
> >        the function sbrk() returns: sbrk(0) 0x1c17f
> >
> > I then changed the vp variable to (added __arm__ to the __mips__
> > section above) and the test passes:
> > Debug Case 2:
> > vp = (void *)((char *)sbrk(0) + 256 * K_1);
> >        The variable "vp" returns: vp =  0x5c17f
> >        the function sbrk() returns: brk(0) 0x1c17f
> >
> > I do not understand why Debug Case 2: (default code in ltp) fails.
> > The shared mem current page is 0x1c17f and vp is 0x1d000 this seems
> > correct or at least no different than Debug Case 2 were vp is a page
> > or more higher in address than what sbrk(0) returns.
> >
> > Regards,
> > Shane
> >
> > System:
> > Xscale PXA270
> > 64 MB Ram
> > Kernel 2.6.23.16
> > libc-2.5
> >
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>
>
>
> --
> Regards & Thanks--
> Subrata



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