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OpenCloudOS-Kernel
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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: Nicolas Pitre <nicolas.pitre@linaro.org>
Tested-by: Shawn Guo <shawn.guo@linaro.org>
Tested-by: Tony Lindgren <tony@atomide.com>
This commit is contained in:
Nicolas Pitre 2011-04-21 21:59:49 -04:00 committed by Nicolas Pitre
parent e40f1e9fb3
commit ccc1c7c6c2
2 changed files with 11 additions and 6 deletions
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4
arch/arm/boot/compressed/decompress.c
View File

@ -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);
}

13
arch/arm/boot/compressed/misc.c
View File

@ -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,
output_data, error);
putstr(" done, booting the kernel.\n");
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");
}