Re: 0.161 elfutils test are failing on Linux Arch

[Anatol Pomozov <anatol dot pomozov at gmail dot com>]

Hi

On Wed, Jan 14, 2015 at 11:41 AM, Mark Wielaard <mjw@redhat.com> wrote:

> On Wed, 2015-01-14 at 11:19 -0800, Anatol Pomozov wrote:
> > I am trying to build elfutils 0.161 on Linux Arch and 2 tests are
> failing.
> > Building 0.160 on the same machine is fine.
> > [...]
> > FAIL: vdsosyms
> > FAIL: run-deleted.sh
> >
> >
> > [anatol(a)arch tests]$ cat vdsosyms.log
> > module name: /usr/bin/bash
> > module name: /usr/lib/libc-2.20.so
> > module name: /usr/lib/libdl-2.20.so
> > module name: /usr/lib/libncursesw.so.5.9
> > module name: /usr/lib/libreadline.so.6.3
> > module name: /usr/lib/ld-2.20.so
> > module name: [vdso: 22118]
> > vdso syms: -1
> > ./vdsosyms: dwfl_module_getsymtab: Callback returned failure
> >
> >
> > [anatol(a)arch tests]$ cat run-deleted.sh.log
> > PID 22079 - process
> > TID 22079:
> >
> /home/anatol/sources/core-arch/elfutils/trunk/src/elfutils-0.161/src/stack:
> > dwfl_thread_getframes tid 22079: Operation not permitted
> >
> /home/anatol/sources/core-arch/elfutils/trunk/src/elfutils-0.161/src/stack:
> > Couldn't show any frames.
> >
> >
> > Is it a known issue with 0.161?
>
> Not a know issue.
>
> The first error message isn't very helpful. But the second might
> indicate some ptrace operation or reading /proc/pid/mem is not
> permitted. Both tests rely on being able to attach to and read from the
> process memory to get the ELF image (the first for the vdso, the second
> for the deleted.so).
>
> There have been selinux setting that prevented any such operation. Maybe
> Arch linux enables something like that?
>

No, my kernel (3.18.2)  does not have SELinux enabled. Here is kernel
config file https://gist.github.com/anatol/d4da6afda94d479ca142

How to run a single test?

[anatol(a)arch tests]$ ./run-deleted.sh
./run-deleted.sh: line 18: /backtrace-subr.sh: No such file or directory
./run-deleted.sh: line 20: tempfiles: command not found
cp: cannot stat ‘/deleted’: No such file or directory
cp: cannot stat ‘/deleted-lib.so’: No such file or directory
./run-deleted.sh: line 28: testrun: command not found
./run-deleted.sh: line 31: tempfiles: command not found
./run-deleted.sh: line 36: testrun: command not found
kill: usage: kill [-s sigspec | -n signum | -sigspec] pid | jobspec ... or
kill -l [sigspec]
./run-deleted.sh: line 40: check_native_unsupported: command not found

does not look right. I would like like to run/gdb the command that fails.

Hi

On Wed, Jan 14, 2015 at 11:41 AM, Mark Wielaard <mjw@redhat.com> wrote:

On Wed, 2015-01-14 at 11:19 -0800, Anatol Pomozov wrote:
> I am trying to build elfutils 0.161 on Linux Arch and 2 tests are failing.
> Building 0.160 on the same machine is fine.
> [...]
> FAIL: vdsosyms
> FAIL: run-deleted.sh
>
>
> [anatol@arch tests]$ cat vdsosyms.log
> module name: /usr/bin/bash
> module name: /usr/lib/libc-2.20.so
> module name: /usr/lib/libdl-2.20.so
> module name: /usr/lib/libncursesw.so.5.9
> module name: /usr/lib/libreadline.so.6.3
> module name: /usr/lib/ld-2.20.so
> module name: [vdso: 22118]
> vdso syms: -1
> ./vdsosyms: dwfl_module_getsymtab: Callback returned failure
>
>
> [anatol@arch tests]$ cat run-deleted.sh.log
> PID 22079 - process
> TID 22079:
> /home/anatol/sources/core-arch/elfutils/trunk/src/elfutils-0.161/src/stack:
> dwfl_thread_getframes tid 22079: Operation not permitted
> /home/anatol/sources/core-arch/elfutils/trunk/src/elfutils-0.161/src/stack:
> Couldn't show any frames.
>
>
> Is it a known issue with 0.161?

Not a know issue.

The first error message isn't very helpful. But the second might
indicate some ptrace operation or reading /proc/pid/mem is not
permitted. Both tests rely on being able to attach to and read from the
process memory to get the ELF image (the first for the vdso, the second
for the deleted.so).

There have been selinux setting that prevented any such operation. Maybe
Arch linux enables something like that?

No, my kernel (3.18.2)  does not have SELinux enabled. Here is kernel config file https://gist.github.com/anatol/d4da6afda94d479ca142

How to run a single test?

[anatol@arch tests]$ ./run-deleted.sh 

./run-deleted.sh: line 18: /backtrace-subr.sh: No such file or directory

./run-deleted.sh: line 20: tempfiles: command not found

cp: cannot stat â??/deletedâ??: No such file or directory

cp: cannot stat â??/deleted-lib.soâ??: No such file or directory

./run-deleted.sh: line 28: testrun: command not found

./run-deleted.sh: line 31: tempfiles: command not found

./run-deleted.sh: line 36: testrun: command not found

kill: usage: kill [-s sigspec | -n signum | -sigspec] pid | jobspec ... or kill -l [sigspec]

./run-deleted.sh: line 40: check_native_unsupported: command not found

does not look right. I would like like to run/gdb the command that fails.