On Thu, 2009-07-02 at 09:35 +0200, Michal Simek wrote:
> Hi,
>
> Can someone explain me why is in that subject tests for invalid pointer
> choose
> address 1 (or 7 in socketpair01)? I did some tests on Microblaze and for
> this address I am getting segfault.
> That's the reason why I think that problem is in glibc or ltp test. All
> tests test reaction for invalid pointer address.
>
> The interesting is that any address from 1 to 999 9999 caused segfault.
> Address above not.
> Below is memory map but first segment starts at 0x1000 0000 not 1000
> 0000 which is in patches below and works.
>
> # cat /proc/66/maps
> 10000000-10001000 r-xp 00000000 00:01 394 /opcoded
> 10001000-10002000 rw-p 00000000 00:01 394 /opcoded
> 48000000-4801c000 r-xp 00000000 00:01 389 /lib/ld-2.3.3.so
> 4801c000-4801e000 rw-p 0001b000 00:01 389 /lib/ld-2.3.3.so
> 4801e000-4817c000 r-xp 00000000 00:01 379 /lib/libc-2.3.3.so
> 4817c000-4817f000 r--p 0015d000 00:01 379 /lib/libc-2.3.3.so
> 4817f000-48181000 rw-p 00160000 00:01 379 /lib/libc-2.3.3.so
> 48181000-48186000 rw-p 00000000 00:00 0
> bfc15000-bfc2a000 rwxp 00000000 00:00 0 [stack]
>
>
> Below are my changes which jump over segfault but they are still invalid
> pointer.
> Has someone ever met with this problem before?
>
> Patches below are on this link too.
> http://developer.petalogix.com/git/gitweb.cgi?p=ltp-microblaze.git;a=commitdiff;h=45f4cd783ce8b94f1267bb87c0c46e8536f62eca
>
> Thanks,
> Michal
Michal,
I think you would need to recreate this :-)
patching file testcases/kernel/syscalls/getpeername/getpeername01.c
Hunk #1 FAILED at 93.
1 out of 1 hunk FAILED -- saving rejects to file
testcases/kernel/syscalls/getpeername/getpeername01.c.rej
patching file testcases/kernel/syscalls/getsockname/getsockname01.c
Hunk #1 FAILED at 90.
1 out of 1 hunk FAILED -- saving rejects to file
testcases/kernel/syscalls/getsockname/getsockname01.c.rej
patching file testcases/kernel/syscalls/socketpair/socketpair01.c
patch: **** malformed patch at line 151: pointer"},
Regards--
Subrata
>
>
> diff --git a/testcases/kernel/syscalls/getpeername/getpeername01.c
> b/testcases/kernel/syscalls/getpeername/getpeername01.c
> index 55d349a..3ae015d 100644 (file)
> --- a/testcases/kernel/syscalls/getpeername/getpeername01.c
> +++ b/testcases/kernel/syscalls/getpeername/getpeername01.c
> @@ -93,7 +93,7 @@ struct test_case_t { /* test case structure */
> &sinlen, -1, EFAULT, setup2, cleanup1,
> "invalid socket buffer"}, {
> PF_UNIX, SOCK_STREAM, 0, (struct sockaddr *)&fsin1,
> - (socklen_t *) 1, -1, EFAULT, setup2, cleanup1,
> + (socklen_t *) 10000000, -1, EFAULT, setup2, cleanup1,
> "invalid salen"},
> #endif
> };
>
> diff --git a/testcases/kernel/syscalls/getsockname/getsockname01.c
> b/testcases/kernel/syscalls/getsockname/getsockname01.c
> index 6159847..2020230 100644 (file)
> --- a/testcases/kernel/syscalls/getsockname/getsockname01.c
> +++ b/testcases/kernel/syscalls/getsockname/getsockname01.c
> @@ -90,7 +90,7 @@ struct test_case_t { /* test case structure */
> &sinlen, -1, EFAULT, setup1, cleanup1,
> "invalid socket buffer"}, {
> PF_INET, SOCK_STREAM, 0, (struct sockaddr *)&fsin1,
> - (socklen_t *) 1, -1, EFAULT, setup1, cleanup1,
> + (socklen_t *) 1000000, -1, EFAULT, setup1, cleanup1,
> "invalid salen"},
> #endif
> };
>
> diff --git a/testcases/kernel/syscalls/socketpair/socketpair01.c
> b/testcases/kernel/syscalls/socketpair/socketpair01.c
> index fc90529..f8c29c0 100644 (file)
> --- a/testcases/kernel/syscalls/socketpair/socketpair01.c
> +++ b/testcases/kernel/syscalls/socketpair/socketpair01.c
> @@ -81,7 +81,7 @@ struct test_case_t { /* test case structure */
> /* Skip since uClinux does not implement memory protection */
> {
> PF_UNIX, SOCK_STREAM, 0, 0, -1, EFAULT, "bad pointer"}, {
> - PF_UNIX, SOCK_STREAM, 0, (int *)7, -1, EFAULT, "bad pointer"},
> + PF_UNIX, SOCK_STREAM, 0, (int *)10000000, -1, EFAULT, "bad
> pointer"},
> #endif
> {
> PF_INET, SOCK_DGRAM, 17, sv, -1, EOPNOTSUPP, "UDP socket"}, {
>
>
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