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| author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2017-01-24 08:05:52 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-02-01 08:30:52 +0100 |
| commit | bae49e72f95155dd22ee6e80f6b4eb360469b7d6 (patch) | |
| tree | f6560dc3ba7ed8f3a8445decd68289f8a8c45ba8 /Documentation | |
| parent | 8637de3a318df6b84a91c7d3b988fab8668f94ee (diff) | |
s390/ptrace: Preserve previous registers for short regset write
commit 9dce990d2cf57b5ed4e71a9cdbd7eae4335111ff upstream.
Ensure that if userspace supplies insufficient data to
PTRACE_SETREGSET to fill all the registers, the thread's old
registers are preserved.
convert_vx_to_fp() is adapted to handle only a specified number of
registers rather than unconditionally handling all of them: other
callers of this function are adapted appropriately.
Based on an initial patch by Dave Martin.
Reported-by: Dave Martin <Dave.Martin@arm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions