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authorAtsushi Nemoto <anemo@mba.ocn.ne.jp>2006-07-13 18:01:50 +0400
committerRalf Baechle <ralf@linux-mips.org>2006-07-14 00:26:22 +0400
commitf4dee85e2c6a7d7adf7ea4d6d3053a41c78175b7 (patch)
tree59bb468f05b99adbdbcef01195cff622585a337f
parentbddc8134db00002a9fd1b33fcb45747bdd3a2777 (diff)
downloadlinux-f4dee85e2c6a7d7adf7ea4d6d3053a41c78175b7.tar.xz
[MIPS] sparsemem: fix crash in show_mem
With sparsemem, pfn should be checked by pfn_valid() before pfn_to_page(). Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
-rw-r--r--arch/mips/mm/pgtable.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/mips/mm/pgtable.c b/arch/mips/mm/pgtable.c
index 792c6eb44232..c93aa6cbcaca 100644
--- a/arch/mips/mm/pgtable.c
+++ b/arch/mips/mm/pgtable.c
@@ -15,6 +15,8 @@ void show_mem(void)
printk("Free swap: %6ldkB\n", nr_swap_pages<<(PAGE_SHIFT-10));
pfn = max_mapnr;
while (pfn-- > 0) {
+ if (!pfn_valid(pfn))
+ continue;
page = pfn_to_page(pfn);
total++;
if (PageHighMem(page))