Re: [PATCH 2/2] proc: test /proc/self/syscall

From: Alexey Dobriyan
Date: Mon May 14 2018 - 16:03:45 EST


On Tue, May 15, 2018 at 12:34:18AM +0530, Naresh Kamboju wrote:
> Hi Alexey,
>
> On 27 February 2018 at 02:51, Alexey Dobriyan <adobriyan@xxxxxxxxx> wrote:
> > Read from /proc/self/syscall should yield read system call and correct
> > args in the output as current is reading /proc/self/syscall.
>
> Is this test expected to work on arm32 bit architecture ?
> I have tested on arm32 devices and it returns 1 and reported as FAIL.
>
> Strace output:
> <snip>
> munmap(0xb6f4a000, 13514) = 0
> open("/proc/self/syscall", O_RDONLY) = 3
> read(3, "3 0x3 0xbeacfbe0 0x40 0x3 0xbeac"..., 64) = 64

Yes! Obviously, it was tested on x86_64 only.

arch/arm/tools/syscall.tbl shows read is #3
and pointer looks 32-bit, so what's wrong?