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R. Silva" Cc: Kees Cook , Linux Kernel Mailing List , Linux Next Mailing List , David Sterba Subject: linux-next: build warning after merge of the kspp-gustavo tree Message-ID: <20210623083901.1d49d19d@canb.auug.org.au> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="Sig_/ZYMtYl+EaQ81t.y/0T093tr"; protocol="application/pgp-signature"; micalg=pgp-sha256 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --Sig_/ZYMtYl+EaQ81t.y/0T093tr Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Hi all, After merging the kspp-gustavo tree, today's linux-next build (powerpc ppc64_defconfig) produced this warning: In file included from fs/btrfs/ctree.h:9, from fs/btrfs/struct-funcs.c:8: fs/btrfs/struct-funcs.c: In function 'btrfs_get_token_16': fs/btrfs/struct-funcs.c:80:46: warning: array subscript 1 is above array bo= unds of 'struct page *[1]' [-Warray-bounds] 80 | token->kaddr =3D page_address(token->eb->pages[idx + 1]); \ | ~~~~~~~~~~~~~~~~^~~~~~~~~ include/linux/mm.h:1627:48: note: in definition of macro 'page_address' 1627 | #define page_address(page) lowmem_page_address(page) | ^~~~ fs/btrfs/struct-funcs.c:161:1: note: in expansion of macro 'DEFINE_BTRFS_SE= TGET_BITS' 161 | DEFINE_BTRFS_SETGET_BITS(16) | ^~~~~~~~~~~~~~~~~~~~~~~~ In file included from fs/btrfs/ctree.h:32, from fs/btrfs/struct-funcs.c:8: fs/btrfs/extent_io.h:97:15: note: while referencing 'pages' 97 | struct page *pages[INLINE_EXTENT_BUFFER_PAGES]; | ^~~~~ In file included from fs/btrfs/ctree.h:9, from fs/btrfs/struct-funcs.c:8: fs/btrfs/struct-funcs.c: In function 'btrfs_get_16': fs/btrfs/struct-funcs.c:101:32: warning: array subscript 1 is above array b= ounds of 'struct page * const[1]' [-Warray-bounds] 101 | kaddr =3D page_address(eb->pages[idx + 1]); \ | ~~~~~~~~~^~~~~~~~~ include/linux/mm.h:1627:48: note: in definition of macro 'page_address' 1627 | #define page_address(page) lowmem_page_address(page) | ^~~~ fs/btrfs/struct-funcs.c:161:1: note: in expansion of macro 'DEFINE_BTRFS_SE= TGET_BITS' 161 | DEFINE_BTRFS_SETGET_BITS(16) | ^~~~~~~~~~~~~~~~~~~~~~~~ In file included from fs/btrfs/ctree.h:32, from fs/btrfs/struct-funcs.c:8: fs/btrfs/extent_io.h:97:15: note: while referencing 'pages' 97 | struct page *pages[INLINE_EXTENT_BUFFER_PAGES]; | ^~~~~ In file included from fs/btrfs/ctree.h:9, from fs/btrfs/struct-funcs.c:8: fs/btrfs/struct-funcs.c: In function 'btrfs_set_token_16': fs/btrfs/struct-funcs.c:133:46: warning: array subscript 1 is above array b= ounds of 'struct page *[1]' [-Warray-bounds] 133 | token->kaddr =3D page_address(token->eb->pages[idx + 1]); \ | ~~~~~~~~~~~~~~~~^~~~~~~~~ include/linux/mm.h:1627:48: note: in definition of macro 'page_address' 1627 | #define page_address(page) lowmem_page_address(page) | ^~~~ fs/btrfs/struct-funcs.c:161:1: note: in expansion of macro 'DEFINE_BTRFS_SE= TGET_BITS' 161 | DEFINE_BTRFS_SETGET_BITS(16) | ^~~~~~~~~~~~~~~~~~~~~~~~ In file included from fs/btrfs/ctree.h:32, from fs/btrfs/struct-funcs.c:8: fs/btrfs/extent_io.h:97:15: note: while referencing 'pages' 97 | struct page *pages[INLINE_EXTENT_BUFFER_PAGES]; | ^~~~~ In file included from fs/btrfs/ctree.h:9, from fs/btrfs/struct-funcs.c:8: fs/btrfs/struct-funcs.c: In function 'btrfs_set_16': fs/btrfs/struct-funcs.c:156:32: warning: array subscript 1 is above array b= ounds of 'struct page * const[1]' [-Warray-bounds] 156 | kaddr =3D page_address(eb->pages[idx + 1]); \ | ~~~~~~~~~^~~~~~~~~ include/linux/mm.h:1627:48: note: in definition of macro 'page_address' 1627 | #define page_address(page) lowmem_page_address(page) | ^~~~ fs/btrfs/struct-funcs.c:161:1: note: in expansion of macro 'DEFINE_BTRFS_SE= TGET_BITS' 161 | DEFINE_BTRFS_SETGET_BITS(16) | ^~~~~~~~~~~~~~~~~~~~~~~~ In file included from fs/btrfs/ctree.h:32, from fs/btrfs/struct-funcs.c:8: fs/btrfs/extent_io.h:97:15: note: while referencing 'pages' 97 | struct page *pages[INLINE_EXTENT_BUFFER_PAGES]; | ^~~~~ In file included from fs/btrfs/ctree.h:9, from fs/btrfs/struct-funcs.c:8: fs/btrfs/struct-funcs.c: In function 'btrfs_get_token_32': fs/btrfs/struct-funcs.c:80:46: warning: array subscript 1 is above array bo= unds of 'struct page *[1]' [-Warray-bounds] 80 | token->kaddr =3D page_address(token->eb->pages[idx + 1]); \ | ~~~~~~~~~~~~~~~~^~~~~~~~~ include/linux/mm.h:1627:48: note: in definition of macro 'page_address' 1627 | #define page_address(page) lowmem_page_address(page) | ^~~~ fs/btrfs/struct-funcs.c:162:1: note: in expansion of macro 'DEFINE_BTRFS_SE= TGET_BITS' 162 | DEFINE_BTRFS_SETGET_BITS(32) | ^~~~~~~~~~~~~~~~~~~~~~~~ In file included from fs/btrfs/ctree.h:32, from fs/btrfs/struct-funcs.c:8: fs/btrfs/extent_io.h:97:15: note: while referencing 'pages' 97 | struct page *pages[INLINE_EXTENT_BUFFER_PAGES]; | ^~~~~ In file included from fs/btrfs/ctree.h:9, from fs/btrfs/struct-funcs.c:8: fs/btrfs/struct-funcs.c: In function 'btrfs_get_32': fs/btrfs/struct-funcs.c:101:32: warning: array subscript 1 is above array b= ounds of 'struct page * const[1]' [-Warray-bounds] 101 | kaddr =3D page_address(eb->pages[idx + 1]); \ | ~~~~~~~~~^~~~~~~~~ include/linux/mm.h:1627:48: note: in definition of macro 'page_address' 1627 | #define page_address(page) lowmem_page_address(page) | ^~~~ fs/btrfs/struct-funcs.c:162:1: note: in expansion of macro 'DEFINE_BTRFS_SE= TGET_BITS' 162 | DEFINE_BTRFS_SETGET_BITS(32) | ^~~~~~~~~~~~~~~~~~~~~~~~ In file included from fs/btrfs/ctree.h:32, from fs/btrfs/struct-funcs.c:8: fs/btrfs/extent_io.h:97:15: note: while referencing 'pages' 97 | struct page *pages[INLINE_EXTENT_BUFFER_PAGES]; | ^~~~~ In file included from fs/btrfs/ctree.h:9, from fs/btrfs/struct-funcs.c:8: fs/btrfs/struct-funcs.c: In function 'btrfs_set_token_32': fs/btrfs/struct-funcs.c:133:46: warning: array subscript 1 is above array b= ounds of 'struct page *[1]' [-Warray-bounds] 133 | token->kaddr =3D page_address(token->eb->pages[idx + 1]); \ | ~~~~~~~~~~~~~~~~^~~~~~~~~ include/linux/mm.h:1627:48: note: in definition of macro 'page_address' 1627 | #define page_address(page) lowmem_page_address(page) | ^~~~ fs/btrfs/struct-funcs.c:162:1: note: in expansion of macro 'DEFINE_BTRFS_SE= TGET_BITS' 162 | DEFINE_BTRFS_SETGET_BITS(32) | ^~~~~~~~~~~~~~~~~~~~~~~~ In file included from fs/btrfs/ctree.h:32, from fs/btrfs/struct-funcs.c:8: fs/btrfs/extent_io.h:97:15: note: while referencing 'pages' 97 | struct page *pages[INLINE_EXTENT_BUFFER_PAGES]; | ^~~~~ In file included from fs/btrfs/ctree.h:9, from fs/btrfs/struct-funcs.c:8: fs/btrfs/struct-funcs.c: In function 'btrfs_set_32': fs/btrfs/struct-funcs.c:156:32: warning: array subscript 1 is above array b= ounds of 'struct page * const[1]' [-Warray-bounds] 156 | kaddr =3D page_address(eb->pages[idx + 1]); \ | ~~~~~~~~~^~~~~~~~~ include/linux/mm.h:1627:48: note: in definition of macro 'page_address' 1627 | #define page_address(page) lowmem_page_address(page) | ^~~~ fs/btrfs/struct-funcs.c:162:1: note: in expansion of macro 'DEFINE_BTRFS_SE= TGET_BITS' 162 | DEFINE_BTRFS_SETGET_BITS(32) | ^~~~~~~~~~~~~~~~~~~~~~~~ In file included from fs/btrfs/ctree.h:32, from fs/btrfs/struct-funcs.c:8: fs/btrfs/extent_io.h:97:15: note: while referencing 'pages' 97 | struct page *pages[INLINE_EXTENT_BUFFER_PAGES]; | ^~~~~ In file included from fs/btrfs/ctree.h:9, from fs/btrfs/struct-funcs.c:8: fs/btrfs/struct-funcs.c: In function 'btrfs_get_token_64': fs/btrfs/struct-funcs.c:80:46: warning: array subscript 1 is above array bo= unds of 'struct page *[1]' [-Warray-bounds] 80 | token->kaddr =3D page_address(token->eb->pages[idx + 1]); \ | ~~~~~~~~~~~~~~~~^~~~~~~~~ include/linux/mm.h:1627:48: note: in definition of macro 'page_address' 1627 | #define page_address(page) lowmem_page_address(page) | ^~~~ fs/btrfs/struct-funcs.c:163:1: note: in expansion of macro 'DEFINE_BTRFS_SE= TGET_BITS' 163 | DEFINE_BTRFS_SETGET_BITS(64) | ^~~~~~~~~~~~~~~~~~~~~~~~ In file included from fs/btrfs/ctree.h:32, from fs/btrfs/struct-funcs.c:8: fs/btrfs/extent_io.h:97:15: note: while referencing 'pages' 97 | struct page *pages[INLINE_EXTENT_BUFFER_PAGES]; | ^~~~~ In file included from fs/btrfs/ctree.h:9, from fs/btrfs/struct-funcs.c:8: fs/btrfs/struct-funcs.c: In function 'btrfs_get_64': fs/btrfs/struct-funcs.c:101:32: warning: array subscript 1 is above array b= ounds of 'struct page * const[1]' [-Warray-bounds] 101 | kaddr =3D page_address(eb->pages[idx + 1]); \ | ~~~~~~~~~^~~~~~~~~ include/linux/mm.h:1627:48: note: in definition of macro 'page_address' 1627 | #define page_address(page) lowmem_page_address(page) | ^~~~ fs/btrfs/struct-funcs.c:163:1: note: in expansion of macro 'DEFINE_BTRFS_SE= TGET_BITS' 163 | DEFINE_BTRFS_SETGET_BITS(64) | ^~~~~~~~~~~~~~~~~~~~~~~~ In file included from fs/btrfs/ctree.h:32, from fs/btrfs/struct-funcs.c:8: fs/btrfs/extent_io.h:97:15: note: while referencing 'pages' 97 | struct page *pages[INLINE_EXTENT_BUFFER_PAGES]; | ^~~~~ In file included from fs/btrfs/ctree.h:9, from fs/btrfs/struct-funcs.c:8: fs/btrfs/struct-funcs.c: In function 'btrfs_set_token_64': fs/btrfs/struct-funcs.c:133:46: warning: array subscript 1 is above array b= ounds of 'struct page *[1]' [-Warray-bounds] 133 | token->kaddr =3D page_address(token->eb->pages[idx + 1]); \ | ~~~~~~~~~~~~~~~~^~~~~~~~~ include/linux/mm.h:1627:48: note: in definition of macro 'page_address' 1627 | #define page_address(page) lowmem_page_address(page) | ^~~~ fs/btrfs/struct-funcs.c:163:1: note: in expansion of macro 'DEFINE_BTRFS_SE= TGET_BITS' 163 | DEFINE_BTRFS_SETGET_BITS(64) | ^~~~~~~~~~~~~~~~~~~~~~~~ In file included from fs/btrfs/ctree.h:32, from fs/btrfs/struct-funcs.c:8: fs/btrfs/extent_io.h:97:15: note: while referencing 'pages' 97 | struct page *pages[INLINE_EXTENT_BUFFER_PAGES]; | ^~~~~ In file included from fs/btrfs/ctree.h:9, from fs/btrfs/struct-funcs.c:8: fs/btrfs/struct-funcs.c: In function 'btrfs_set_64': fs/btrfs/struct-funcs.c:156:32: warning: array subscript 1 is above array b= ounds of 'struct page * const[1]' [-Warray-bounds] 156 | kaddr =3D page_address(eb->pages[idx + 1]); \ | ~~~~~~~~~^~~~~~~~~ include/linux/mm.h:1627:48: note: in definition of macro 'page_address' 1627 | #define page_address(page) lowmem_page_address(page) | ^~~~ fs/btrfs/struct-funcs.c:163:1: note: in expansion of macro 'DEFINE_BTRFS_SE= TGET_BITS' 163 | DEFINE_BTRFS_SETGET_BITS(64) | ^~~~~~~~~~~~~~~~~~~~~~~~ In file included from fs/btrfs/ctree.h:32, from fs/btrfs/struct-funcs.c:8: fs/btrfs/extent_io.h:97:15: note: while referencing 'pages' 97 | struct page *pages[INLINE_EXTENT_BUFFER_PAGES]; | ^~~~~ In file included from include/linux/bvec.h:14, from include/linux/blk_types.h:10, from include/linux/genhd.h:19, from include/linux/blkdev.h:8, from fs/btrfs/disk-io.c:7: fs/btrfs/disk-io.c: In function 'csum_tree_block': fs/btrfs/disk-io.c:225:34: warning: array subscript 1 is above array bounds= of 'struct page *[1]' [-Warray-bounds] 225 | kaddr =3D page_address(buf->pages[i]); | ~~~~~~~~~~^~~ include/linux/mm.h:1627:48: note: in definition of macro 'page_address' 1627 | #define page_address(page) lowmem_page_address(page) | ^~~~ In file included from fs/btrfs/ctree.h:32, from fs/btrfs/disk-io.c:22: fs/btrfs/extent_io.h:97:15: note: while referencing 'pages' 97 | struct page *pages[INLINE_EXTENT_BUFFER_PAGES]; | ^~~~~ Introduced by commit 8d7900f545f1 ("Makefile: Enable -Warray-bounds") --=20 Cheers, Stephen Rothwell --Sig_/ZYMtYl+EaQ81t.y/0T093tr Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEENIC96giZ81tWdLgKAVBC80lX0GwFAmDSZoUACgkQAVBC80lX 0Gyx3Qf+OfjsNPJXQRPtHo/tXL4MeLKOzhgDB+vJB6VlTo5JbfNPqoN74xv+owW4 Ov9zncHlTwekQzEfCcIOyDKE/hotaD7A9l69cAhkkqyhvmFzxK9jLv3WD9MVn797 DXL+DTBHTjvbHBFu2jRJ1E0qAPBJGUmIEkfxQrhA4IOtVSClFSoN6amqpk6wpFoV sPVw/+c7iwIG7aBgPQ7FkgUDfqAqt1J2DKJWrLfhBcBk4WdLurwP7a83CTHpT2uS ukZ77RWyKtdkCpRjEFllA4U20OuWiMHvn0uV/0C6r0ZjaS4A3lYRV9PenwgMujqS VZkwfwN53nwQ/Cw61wu/O7DuuwpFWA== =J+Ls -----END PGP SIGNATURE----- --Sig_/ZYMtYl+EaQ81t.y/0T093tr--