The patch titled
Subject: mm: don't warn when vmalloc() fails due to a fatal signal
has been added to the -mm tree. Its filename is
mm-dont-warn-when-vmalloc-fails-due-to-a-fatal-signal.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-dont-warn-when-vmalloc-fails-due-to-a-fatal-signal.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-dont-warn-when-vmalloc-fails-due-to-a-fatal-signal.patch
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------------------------------------------------------
From: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Subject: mm: don't warn when vmalloc() fails due to a fatal signal
When vmalloc() fails it prints a very lengthy message with all the details
about memory consumption assuming that it happened due to OOM. However,
vmalloc() can also fail due to fatal signal pending. In such case the
message is quite confusing because it suggests that it is OOM but the
numbers suggest otherwise. The messages can also pollute console
considerably.
Don't warn when vmalloc() fails due to fatal signal pending.
Link: http://lkml.kernel.org/r/20170313114425.72724-1-dvyukov@xxxxxxxxxx
Signed-off-by: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Reviewed-by: Matthew Wilcox <mawilcox@xxxxxxxxxxxxx>
Acked-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Acked-by: Michal Hocko <mhocko@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/vmalloc.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff -puN mm/vmalloc.c~mm-dont-warn-when-vmalloc-fails-due-to-a-fatal-signal mm/vmalloc.c
--- a/mm/vmalloc.c~mm-dont-warn-when-vmalloc-fails-due-to-a-fatal-signal
+++ a/mm/vmalloc.c
@@ -1683,7 +1683,7 @@ static void *__vmalloc_area_node(struct
if (fatal_signal_pending(current)) {
area->nr_pages = i;
- goto fail;
+ goto fail_no_warn;
}
if (node == NUMA_NO_NODE)
@@ -1709,6 +1709,7 @@ fail:
warn_alloc(gfp_mask, NULL,
"vmalloc: allocation failure, allocated %ld of %ld bytes",
(area->nr_pages*PAGE_SIZE), area->size);
+fail_no_warn:
vfree(area->addr);
return NULL;
}
_
Patches currently in -mm which might be from dvyukov@xxxxxxxxxx are
mm-dont-warn-when-vmalloc-fails-due-to-a-fatal-signal.patch
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