The patch titled
Subject: mm/vmstat.c: fix outdated vmstat_text
has been added to the -mm tree. Its filename is
mm-vmstat-fix-outdated-vmstat_text.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-vmstat-fix-outdated-vmstat_text.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-vmstat-fix-outdated-vmstat_text.patch
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------------------------------------------------------
From: Jann Horn <jannh@xxxxxxxxxx>
Subject: mm/vmstat.c: fix outdated vmstat_text
7a9cdebdcc17 ("mm: get rid of vmacache_flush_all() entirely") removed the
VMACACHE_FULL_FLUSHES statistics, but didn't remove the corresponding
entry in vmstat_text. This causes an out-of-bounds access in
vmstat_show().
Luckily this only affects kernels with CONFIG_DEBUG_VM_VMACACHE=y, which
is probably very rare.
Link: http://lkml.kernel.org/r/20181001143138.95119-1-jannh@xxxxxxxxxx
Fixes: 7a9cdebdcc17 ("mm: get rid of vmacache_flush_all() entirely")
Signed-off-by: Jann Horn <jannh@xxxxxxxxxx>
Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx>
Reviewed-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Cc: Davidlohr Bueso <dave@xxxxxxxxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Christoph Lameter <clameter@xxxxxxx>
Cc: Roman Gushchin <guro@xxxxxx>
Cc: Kemi Wang <kemi.wang@xxxxxxxxx>
Cc: Andy Lutomirski <luto@xxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/vmstat.c | 1 -
1 file changed, 1 deletion(-)
--- a/mm/vmstat.c~mm-vmstat-fix-outdated-vmstat_text
+++ a/mm/vmstat.c
@@ -1283,7 +1283,6 @@ const char * const vmstat_text[] = {
#ifdef CONFIG_DEBUG_VM_VMACACHE
"vmacache_find_calls",
"vmacache_find_hits",
- "vmacache_full_flushes",
#endif
#ifdef CONFIG_SWAP
"swap_ra",
_
Patches currently in -mm which might be from jannh@xxxxxxxxxx are
proc-restrict-kernel-stack-dumps-to-root.patch
mm-vmstat-fix-outdated-vmstat_text.patch
mm-vmstat-skip-nr_tlb_remote_flush-properly.patch
mm-vmstat-assert-that-vmstat_text-is-in-sync-with-stat_items_size.patch
reiserfs-propagate-errors-from-fill_with_dentries-properly.patch
