[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>
git-mirror · Jul 13, 2006 · f4dee85 · f4dee85
1 parent bddc813
commit f4dee85
Showing 1 changed file with 2 additions and 0 deletions.
diff --git 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))