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| author | Colin Ian King <colin.king@canonical.com> | 2017-12-04 17:21:06 +0000 |
|---|---|---|
| committer | Zhenyu Wang <zhenyuw@linux.intel.com> | 2017-12-05 11:45:06 +0800 |
| commit | 8e60b7f195d2536b2f090ae97f74ed19a504d60c (patch) | |
| tree | 99f658fc76da1f6404dbdc9a529ccf11bd7a0906 /scripts/gdb/linux/modules.py | |
| parent | f745e9cc7e40c4570ab5e8d5ef32bfaa6e8ced46 (diff) | |
drm/i915/gvt: fix off-by-one comparison of ring_id
The ring_id maximum boundary is being compared using the > operator
instead of >=, leading to an off-by-one error and an out of bounds
write into array vgpu->hws_pga[]. Fix this by simply using the
correct comparison operator. Also re-work another comparison that
uses the comparison > I915_NUM_ENGINES - 1 to use the >= idiom using
to keep this consistent in this code.
Detected by CoverityScan, CID#1462404 ("Out-of-bounds write")
Fixes: a2ae95af9646 ("drm/i915/gvt: update CSB and CSB write pointer in virtual HWSP")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Diffstat (limited to 'scripts/gdb/linux/modules.py')
0 files changed, 0 insertions, 0 deletions