kmemleak: Only scan non-zero-size areas
Kmemleak should only track valid scan areas with a non-zero size. Otherwise, such area may reside just at the end of an object and kmemleak would report "Adding scan area to unknown object". Signed-off-by: Tiejun Chen <tiejun.chen@windriver.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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@ -1036,7 +1036,7 @@ void __ref kmemleak_scan_area(const void *ptr, size_t size, gfp_t gfp)
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{
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{
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pr_debug("%s(0x%p)\n", __func__, ptr);
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pr_debug("%s(0x%p)\n", __func__, ptr);
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if (atomic_read(&kmemleak_enabled) && ptr && !IS_ERR(ptr))
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if (atomic_read(&kmemleak_enabled) && ptr && size && !IS_ERR(ptr))
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add_scan_area((unsigned long)ptr, size, gfp);
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add_scan_area((unsigned long)ptr, size, gfp);
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else if (atomic_read(&kmemleak_early_log))
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else if (atomic_read(&kmemleak_early_log))
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log_early(KMEMLEAK_SCAN_AREA, ptr, size, 0);
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log_early(KMEMLEAK_SCAN_AREA, ptr, size, 0);
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