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Commit f1aee4a3 authored by Patrick Daly's avatar Patrick Daly Committed by Zhenhua Huang
Browse files

mm: Fix false warnings from apply_to_page_range 



This warning message is triggered when addr + size overflows to zero.
This has been observed to occur on ARM64 with CONFIG_RANDOMIZE_BASE=y
when the end of the linear address range is placed at ffffffffffffffff.

Change-Id: I57e34e522a4fc25ab43a0a00be6d0927ea4a1272
Signed-off-by: default avatarPatrick Daly <pdaly@codeaurora.org>
Signed-off-by: default avatarZhenhua Huang <zhenhuah@codeaurora.org>
parent 8c4f24fa

mm/memory.c

+1 −1
Original line number Diff line number Diff line
@@ -1977,7 +1977,7 @@ int apply_to_page_range(struct mm_struct *mm, unsigned long addr, 
	unsigned long end = addr + size;

	int err;



	if (WARN_ON(addr >= end))

	if (WARN_ON(addr >= end - 1))

		return -EINVAL;



	pgd = pgd_offset(mm, addr);