81fc03909a
This is a fix for bug #14845 (bugzilla.kernel.org). The update_checksum() function in mm/kmemleak.c calls kmemcheck_is_obj_initialised() before scanning an object. When KMEMCHECK_PARTIAL_OK is enabled, this function returns true. However, the crc32_le() reads smaller intervals (32-bit) for which kmemleak_is_obj_initialised() may be false leading to a kmemcheck warning. Note that kmemcheck_is_obj_initialized() is currently only used by kmemleak before scanning a memory location. Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Christian Casteyde <casteyde.christian@free.fr> Cc: Vegard Nossum <vegardno@ifi.uio.no> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
18 lines
524 B
C
18 lines
524 B
C
#ifndef ARCH__X86__MM__KMEMCHECK__SHADOW_H
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#define ARCH__X86__MM__KMEMCHECK__SHADOW_H
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enum kmemcheck_shadow {
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KMEMCHECK_SHADOW_UNALLOCATED,
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KMEMCHECK_SHADOW_UNINITIALIZED,
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KMEMCHECK_SHADOW_INITIALIZED,
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KMEMCHECK_SHADOW_FREED,
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};
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void *kmemcheck_shadow_lookup(unsigned long address);
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enum kmemcheck_shadow kmemcheck_shadow_test(void *shadow, unsigned int size);
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enum kmemcheck_shadow kmemcheck_shadow_test_all(void *shadow,
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unsigned int size);
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void kmemcheck_shadow_set(void *shadow, unsigned int size);
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#endif
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