Commit 467aa146 authored by Nicolas Pitre's avatar Nicolas Pitre Committed by Greg Ungerer
Browse files

binfmt_flat: use clear_user() rather than memset() to clear .bss 



This is needed on systems with a MMU.

Signed-off-by: default avatarNicolas Pitre <nico@linaro.org>
Reviewed-by: default avatarGreg Ungerer <gerg@linux-m68k.org>
Signed-off-by: default avatarGreg Ungerer <gerg@linux-m68k.org>
parent 1b2ce442

fs/binfmt_flat.c

+5 −4
Original line number Diff line number Diff line
@@ -795,10 +795,11 @@ static int load_flat_file(struct linux_binprm *bprm, 
	flush_icache_range(start_code, end_code);



	/* zero the BSS,  BRK and stack areas */

	memset((void *)(datapos + data_len), 0, bss_len +

	if (clear_user((void __user *)(datapos + data_len), bss_len +

		       (memp + memp_size - stack_len -		/* end brk */

		       libinfo->lib_list[id].start_brk) +	/* start brk */

			stack_len);

		       stack_len))

		return -EFAULT;



	return 0;

err: