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| author |   Michael Ellerman <mpe@ellerman.id.au> | 2016-11-15 18:02:32 +1100 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2016-11-15 19:26:06 +0100 |
| commit | c55d240003ae253d3057dcf93510c9bd64bb7a09 (patch) | |
| tree | c80233dfdea2ba01b6a627fbe9cbc52a45df203c /tools/perf/scripts/python/failed-syscalls-by-pid.py | |
| parent | mei: fix parameter rename KDoc (diff) | |
| download | linux-rng-c55d240003ae253d3057dcf93510c9bd64bb7a09.tar.xz linux-rng-c55d240003ae253d3057dcf93510c9bd64bb7a09.zip | |
lkdtm: Prevent the compiler from optimising lkdtm_CORRUPT_STACK()
At least on powerpc with GCC 6, the compiler is smart enough to optimise
lkdtm_CORRUPT_STACK() into an empty function that just returns.
If we print the buffer after we've written to it that prevents the
compiler from optimising away data and the memset().
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'tools/perf/scripts/python/failed-syscalls-by-pid.py')
0 files changed, 0 insertions, 0 deletions