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dfec072ecd
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>
43 lines
847 B
C
43 lines
847 B
C
#ifndef ASM_X86_KMEMCHECK_H
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#define ASM_X86_KMEMCHECK_H
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#include <linux/types.h>
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#include <asm/ptrace.h>
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#ifdef CONFIG_KMEMCHECK
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bool kmemcheck_active(struct pt_regs *regs);
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void kmemcheck_show(struct pt_regs *regs);
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void kmemcheck_hide(struct pt_regs *regs);
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bool kmemcheck_fault(struct pt_regs *regs,
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unsigned long address, unsigned long error_code);
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bool kmemcheck_trap(struct pt_regs *regs);
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#else
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static inline bool kmemcheck_active(struct pt_regs *regs)
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{
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return false;
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}
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static inline void kmemcheck_show(struct pt_regs *regs)
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{
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}
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static inline void kmemcheck_hide(struct pt_regs *regs)
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{
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}
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static inline bool kmemcheck_fault(struct pt_regs *regs,
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unsigned long address, unsigned long error_code)
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{
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return false;
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}
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static inline bool kmemcheck_trap(struct pt_regs *regs)
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{
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return false;
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}
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#endif /* CONFIG_KMEMCHECK */
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#endif
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