[Please consider as 2.6.23 material.] --- From: Rafael J. Wysocki <rjw@xxxxxxx> On some systems some PFNs reported by the early initialization code as 'nosave' may be invalid. If we try to set the corresponding bits in the hibernation bitmap, BUG_ON() in memory_bm_find_bit() will be triggered and the system won't be able to boot (cf. https://bugzilla.novell.com/show_bug.cgi?id=296242). Prevent this from happening by verifying if the 'nosave' PFNs are valid in mark_nosave_pages(). Signed-off-by: Rafael J. Wysocki <rjw@xxxxxxx> --- kernel/power/snapshot.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) Index: linux-2.6/kernel/power/snapshot.c =================================================================== --- linux-2.6.orig/kernel/power/snapshot.c +++ linux-2.6/kernel/power/snapshot.c @@ -709,7 +709,8 @@ static void mark_nosave_pages(struct mem region->end_pfn << PAGE_SHIFT); for (pfn = region->start_pfn; pfn < region->end_pfn; pfn++) - memory_bm_set_bit(bm, pfn); + if (pfn_valid(pfn)) + memory_bm_set_bit(bm, pfn); } } _______________________________________________ linux-pm mailing list linux-pm@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linux-foundation.org/mailman/listinfo/linux-pm
