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Commit ccc1c7c6 authored by Nicolas Pitre's avatar Nicolas Pitre Committed by Nicolas Pitre
Browse files

ARM: zImage: don't ignore error returned from decompress() 



If decompress() returns an error without calling error(), we must
not attempt to boot the resulting kernel.

Signed-off-by: default avatarNicolas Pitre <nicolas.pitre@linaro.org>
Tested-by: default avatarShawn Guo <shawn.guo@linaro.org>
Tested-by: default avatarTony Lindgren <tony@atomide.com>
parent e40f1e9f

arch/arm/boot/compressed/decompress.c

+2 −2
Original line number Diff line number Diff line
@@ -44,7 +44,7 @@ extern void error(char *); 
#include "../../../../lib/decompress_unlzma.c"

#endif



void do_decompress(u8 *input, int len, u8 *output, void (*error)(char *x))

int do_decompress(u8 *input, int len, u8 *output, void (*error)(char *x))

{

	decompress(input, len, NULL, NULL, output, NULL, error);

	return decompress(input, len, NULL, NULL, output, NULL, error);

}

arch/arm/boot/compressed/misc.c

+9 −4
Original line number Diff line number Diff line
@@ -177,7 +177,7 @@ asmlinkage void __div0(void) 
	error("Attempting division by 0!");

}



extern void do_decompress(u8 *input, int len, u8 *output, void (*error)(char *x));

extern int do_decompress(u8 *input, int len, u8 *output, void (*error)(char *x));





void
@@ -185,6 +185,8 @@ decompress_kernel(unsigned long output_start, unsigned long free_mem_ptr_p, 
		unsigned long free_mem_ptr_end_p,

		int arch_id)

{

	int ret;



	output_data		= (unsigned char *)output_start;

	free_mem_ptr		= free_mem_ptr_p;

	free_mem_end_ptr	= free_mem_ptr_end_p;
@@ -193,7 +195,10 @@ decompress_kernel(unsigned long output_start, unsigned long free_mem_ptr_p, 
	arch_decomp_setup();



	putstr("Uncompressing Linux...");

	do_decompress(input_data, input_data_end - input_data,

	ret = do_decompress(input_data, input_data_end - input_data,

			    output_data, error);

	if (ret)

		error("decompressor returned an error");

	else

		putstr(" done, booting the kernel.\n");

}