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![Vegard Nossum](/assets/img/avatar_default.png)
General description: kmemcheck is a patch to the linux kernel that detects use of uninitialized memory. It does this by trapping every read and write to memory that was allocated dynamically (e.g. using kmalloc()). If a memory address is read that has not previously been written to, a message is printed to the kernel log. Thanks to Andi Kleen for the set_memory_4k() solution. Andrew Morton suggested documenting the shadow member of struct page. Signed-off-by: Vegard Nossum <vegardno@ifi.uio.no> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi> [export kmemcheck_mark_initialized] [build fix for setup_max_cpus] Signed-off-by: Ingo Molnar <mingo@elte.hu> [rebased for mainline inclusion] Signed-off-by: Vegard Nossum <vegardno@ifi.uio.no>
17 lines
355 B
C
17 lines
355 B
C
#ifndef LINUX_KMEMCHECK_H
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#define LINUX_KMEMCHECK_H
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#include <linux/mm_types.h>
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#include <linux/types.h>
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#ifdef CONFIG_KMEMCHECK
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extern int kmemcheck_enabled;
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int kmemcheck_show_addr(unsigned long address);
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int kmemcheck_hide_addr(unsigned long address);
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#else
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#define kmemcheck_enabled 0
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#endif /* CONFIG_KMEMCHECK */
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#endif /* LINUX_KMEMCHECK_H */
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