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Merge pull request #686 from jfckm/fix-potential-overflow

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Fix potential unsigned overflow in calculations
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Robert Baldyga 2022-03-30 08:57:55 +02:00 committed by GitHub
commit bfd3f5bcba
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1 changed files with 1 additions and 1 deletions
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src/metadata/metadata.c
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@ -316,7 +316,7 @@ static int ocf_metadata_calculate_metadata_size(
/* Cache size in bytes */ /* Cache size in bytes */
diff_lines = ctrl->device_lines * line_size; diff_lines = ctrl->device_lines * line_size;
/* Sub metadata size which is in 4 kiB unit */ /* Sub metadata size which is in 4 kiB unit */
diff_lines -= count_pages * PAGE_SIZE; diff_lines -= (int64_t)count_pages * PAGE_SIZE;
/* Convert back to cache lines */ /* Convert back to cache lines */
diff_lines /= line_size; diff_lines /= line_size;
/* Calculate difference */ /* Calculate difference */