The patch titled
Subject: mm/memory.c:zap_pte_range() print bad swap entry
has been added to the -mm mm-hotfixes-unstable branch. Its filename is
mm-memoryc-zap_pte_range-print-bad-swap-entry.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-memoryc-zap_pte_range-print-bad-swap-entry.patch
This patch will later appear in the mm-hotfixes-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: mm/memory.c:zap_pte_range() print bad swap entry
Date: Wed Nov 15 01:54:18 PM PST 2023
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@xxxxxxxxxx
Cc: Muhammad Usama Anjum <usama.anjum@xxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/memory.c | 1 +
1 file changed, 1 insertion(+)
--- a/mm/memory.c~mm-memoryc-zap_pte_range-print-bad-swap-entry
+++ a/mm/memory.c
@@ -1517,6 +1517,7 @@ static unsigned long zap_pte_range(struc
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);
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
mm-fix-for-negative-counter-nr_file_hugepages-fix.patch
maintainers-add-andrew-morton-for-lib.patch
mm-memoryc-zap_pte_range-print-bad-swap-entry.patch
mm-shmem-fix-race-in-shmem_undo_range-w-thp-fix.patch
mm-add-folio_zero_tail-and-use-it-in-ext4-fix.patch
mm-add-folio_fill_tail-and-use-it-in-iomap-fix.patch
kernel-reboot-explicitly-notify-if-halt-occurred-instead-of-power-off-fix.patch
