Re: [PATCH] S390: Sync ptrace.h with kernel. [BZ #21539]

[Florian Weimer <fweimer@redhat.com>]

On 06/19/2017 03:10 PM, Stefan Liebler wrote:
>     	* sysdeps/unix/sysv/linux/s390/tst-ptrace-singleblock.c:
>     	New file.

The test fails for me like this on s390x:

[root@ibm-z-25 build]# bash testrun.sh misc/tst-ptrace-singleblock
cat /proc/23548/maps
80000000-80004000 r-xp 00000000 fd:00 1883202
/root/build/misc/tst-ptrace-singleblock
80004000-80005000 r--p 00003000 fd:00 1883202
/root/build/misc/tst-ptrace-singleblock
80005000-80006000 rw-p 00004000 fd:00 1883202
/root/build/misc/tst-ptrace-singleblock
2aa00794000-2aa007ba000 r-xp 00000000 fd:00 34794498
/root/build/elf/ld.so
2aa007ba000-2aa007bb000 r--p 00025000 fd:00 34794498
/root/build/elf/ld.so
2aa007bb000-2aa007bd000 rw-p 00026000 fd:00 34794498
/root/build/elf/ld.so
3fffd1e9000-3fffd1ea000 rw-s 00000000 00:04 146001
/dev/zero (deleted)
3fffd1ea000-3fffd1ec000 rw-p 00000000 00:00 0
3fffd1ec000-3fffd38d000 r-xp 00000000 fd:00 34794501
/root/build/libc.so
3fffd38d000-3fffd391000 r--p 001a0000 fd:00 34794501
/root/build/libc.so
3fffd391000-3fffd393000 rw-p 001a4000 fd:00 34794501
/root/build/libc.so
3fffd393000-3fffd39a000 rw-p 00000000 00:00 0
3ffffe62000-3fffff83000 rw-p 00000000 00:00 0
[stack]
child IA: 0x3fffd22ac62 last_break: 0x2aa0079e218
error: ../sysdeps/unix/sysv/linux/s390/tst-ptrace-singleblock.c:111: not
true: ptrace (req_singleblock, pid, NULL, NULL) == 0
The PTRACE_SINGLEBLOCK of the tracer will stop after: brasl %r14,<puts@plt>!
error: 1 test failures
[root@ibm-z-25 build]#

Relevant package versions:

kernel-3.10.0-689.el7.s390x
kernel-headers-3.10.0-689.el7.s390x
devtoolset-6-gcc-6.3.1-3.1.el7.s390x

Please let me know if you need additional information to debug this.

Thanks,
Florian