Commit 727d16f1 authored by Andrew Morton's avatar Andrew Morton
Browse files

mm/memory.c:zap_pte_range() print bad swap entry 

We have a report of this WARN() triggering.  Let's print the offending
swp_entry_t to help diagnosis.

Link: https://lkml.kernel.org/r/000000000000b0e576060a30ee3b@google.com


Cc: Muhammad Usama Anjum <usama.anjum@collabora.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 187da0f8

mm/memory.c

+1 −0
Original line number Diff line number Diff line
@@ -1517,6 +1517,7 @@ static unsigned long zap_pte_range(struct mmu_gather *tlb, 
				continue;

		} else {

			/* We should have covered all the swap entry types */

			pr_alert("unrecognized swap entry 0x%lx\n", entry.val);

			WARN_ON_ONCE(1);

		}

		pte_clear_not_present_full(mm, addr, pte, tlb->fullmm);