The patch titled
Subject: mm-enforce-a-minimal-stack-gap-even-against-inaccessible-vmas-fix
has been added to the -mm mm-hotfixes-unstable branch. Its filename is
mm-enforce-a-minimal-stack-gap-even-against-inaccessible-vmas-fix.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-enforce-a-minimal-stack-gap-even-against-inaccessible-vmas-fix.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-enforce-a-minimal-stack-gap-even-against-inaccessible-vmas-fix
Date: Wed Oct 9 02:05:13 PM PDT 2024
/sprev/next/ in !CONFIG_STACK_GROWSUP section, per Lorenzo
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Closes: https://lore.kernel.org/oe-kbuild-all/202410090632.brLG8w0b-lkp@xxxxxxxxx/
Cc: Lorenzo Stoakes <lorenzo.stoakes@xxxxxxxxxx>
Cc: Ben Hutchings <ben@xxxxxxxxxxxxxxx>
Cc: Helge Deller <deller@xxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Jann Horn <jannh@xxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Rik van Riel <riel@xxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Cc: Willy Tarreau <w@xxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/mmap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/mm/mmap.c~mm-enforce-a-minimal-stack-gap-even-against-inaccessible-vmas-fix
+++ a/mm/mmap.c
@@ -1066,7 +1066,7 @@ static int expand_upwards(struct vm_area
next = find_vma_intersection(mm, vma->vm_end, gap_addr);
if (next && !(next->vm_flags & VM_GROWSUP)) {
/* see comments in expand_downwards() */
- if (vma_is_accessible(prev))
+ if (vma_is_accessible(next))
return -ENOMEM;
if (address == next->vm_start)
return -ENOMEM;
_
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
mm-enforce-a-minimal-stack-gap-even-against-inaccessible-vmas-fix.patch
lib-alloc_tag_module_unload-must-wait-for-pending-kfree_rcu-calls-fix.patch
mm-consolidate-common-checks-in-hugetlb_get_unmapped_area-fix.patch
mm-memoryc-remove-stray-newline-at-top-of-file.patch
