https://github.com/torvalds/linux
Revision b3b64ebd38225d8032b5db42938d969b602040c2 authored by Mel Gorman on 25 June 2021, 01:40:07 UTC, committed by Linus Torvalds on 25 June 2021, 02:40:54 UTC
Dan Carpenter reported the following The patch 0f87d9d30f21: "mm/page_alloc: add an array-based interface to the bulk page allocator" from Apr 29, 2021, leads to the following static checker warning: mm/page_alloc.c:5338 __alloc_pages_bulk() warn: potentially one past the end of array 'page_array[nr_populated]' The problem can occur if an array is passed in that is fully populated. That potentially ends up allocating a single page and storing it past the end of the array. This patch returns 0 if the array is fully populated. Link: https://lkml.kernel.org/r/20210618125102.GU30378@techsingularity.net Fixes: 0f87d9d30f21 ("mm/page_alloc: add an array-based interface to the bulk page allocator") Signed-off-by: Mel Gorman <mgorman@techsinguliarity.net> Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Cc: Jesper Dangaard Brouer <brouer@redhat.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Tip revision: b3b64ebd38225d8032b5db42938d969b602040c2 authored by Mel Gorman on 25 June 2021, 01:40:07 UTC
mm/page_alloc: do bulk array bounds check after checking populated elements
mm/page_alloc: do bulk array bounds check after checking populated elements
Tip revision: b3b64eb
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kernel | ||
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net | ||
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COPYING | -rw-r--r-- | 496 bytes |
CREDITS | -rw-r--r-- | 98.6 KB |
Kbuild | -rw-r--r-- | 1.3 KB |
Kconfig | -rw-r--r-- | 555 bytes |
MAINTAINERS | -rw-r--r-- | 588.5 KB |
Makefile | -rw-r--r-- | 64.4 KB |
README | -rw-r--r-- | 727 bytes |
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