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Commit 7bba1009 authored by qctecmdr Service's avatar qctecmdr Service Committed by Gerrit - the friendly Code Review server
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Merge "kernel/lib: add additional debug capabilities for data corruption"

parents 3517076e 8af9942b

include/linux/bug.h

+5 −0
Original line number Diff line number Diff line
@@ -76,4 +76,9 @@ static inline __must_check bool check_data_corruption(bool v) { return v; } 
		corruption;						 \

	}))



#ifdef CONFIG_PANIC_ON_DATA_CORRUPTION

#define PANIC_CORRUPTION 1

#else

#define PANIC_CORRUPTION 0

#endif  /* CONFIG_PANIC_ON_DATA_CORRUPTION */

#endif	/* _LINUX_BUG_H */

lib/Kconfig.debug

+7 −0
Original line number Diff line number Diff line
@@ -2065,6 +2065,13 @@ config BUG_ON_DATA_CORRUPTION 


	  If unsure, say N.



config PANIC_ON_DATA_CORRUPTION

	bool "Cause a Kernel Panic When Data Corruption is detected"

	help

	 Select this option to upgrade warnings for potentially

	 recoverable data corruption scenarios to system-halting panics,

	 for easier detection and debug.



source "samples/Kconfig"



source "lib/Kconfig.kgdb"

mm/page_poison.c

+1 −0
Original line number Diff line number Diff line
@@ -81,6 +81,7 @@ static void check_poison_mem(unsigned char *mem, size_t bytes) 


	print_hex_dump(KERN_ERR, "", DUMP_PREFIX_ADDRESS, 16, 1, start,

			end - start + 1, 1);

	BUG_ON(PANIC_CORRUPTION);

	dump_stack();

}