s390/ptrace: fix PTRACE_GET_LAST_BREAK error handling

stable inclusion
from stable-v5.10.179
commit 8c746b665089f9da50c34fc0369aa7d7f7c5e609
category: bugfix
bugzilla: https://gitee.com/openeuler/kernel/issues/I8C809

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=8c746b665089f9da50c34fc0369aa7d7f7c5e609



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[ Upstream commit f9bbf25e ]

Return -EFAULT if put_user() for the PTRACE_GET_LAST_BREAK
request fails, instead of silently ignoring it.

Reviewed-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: sanglipeng <sanglipeng1@jd.com>