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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2018-05-21 22:05:30 +0100 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2018-05-22 10:47:07 +0100 |
| commit | 84b510e22da7926522a257cfe295d3695346a0bd (patch) | |
| tree | 2727b27a6fe7db45f7d973f340d09d42d52ed305 /tools/perf/scripts/python/intel-pt-events.py | |
| parent | d93fa1b47b8fcd149b5091f18385304f402a8e15 (diff) | |
drm/i915/query: Protect tainted function pointer lookup
Smatch identifies i915_query_ioctl() as being a potential victim of
Spectre due to its use of a tainted user index into a function pointer
array. Use array_index_nospec() to defang the user index before using it
to lookup the function pointer.
Fixes: a446ae2c6e65 ("drm/i915: add query uAPI")
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180521210530.26008-1-chris@chris-wilson.co.uk
Diffstat (limited to 'tools/perf/scripts/python/intel-pt-events.py')
0 files changed, 0 insertions, 0 deletions