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Message-ID: <202309191958.UBw1cjXk-lkp@intel.com>
Date: Tue, 19 Sep 2023 19:27:26 +0800
From: kernel test robot <lkp@...el.com>
To: Kees Cook <keescook@...omium.org>
Cc: oe-kbuild-all@...ts.linux.dev, linux-kernel@...r.kernel.org,
"Gustavo A. R. Silva" <gustavoars@...nel.org>
Subject: include/linux/dma-mapping.h:416:36: warning: array subscript i is
outside array bounds of 'dma_addr_t[0]' {aka 'long long unsigned int[]'}
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 2cf0f715623872823a72e451243bbf555d10d032
commit: df8fc4e934c12b906d08050d7779f292b9c5c6b5 kbuild: Enable -fstrict-flex-arrays=3
date: 4 months ago
config: loongarch-allmodconfig (https://download.01.org/0day-ci/archive/20230919/202309191958.UBw1cjXk-lkp@intel.com/config)
compiler: loongarch64-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20230919/202309191958.UBw1cjXk-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202309191958.UBw1cjXk-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from include/linux/skbuff.h:28,
from include/net/net_namespace.h:43,
from include/linux/netdevice.h:38,
from drivers/net/ethernet/marvell/sky2.c:18:
drivers/net/ethernet/marvell/sky2.c: In function 'sky2_rx_unmap_skb':
>> include/linux/dma-mapping.h:416:36: warning: array subscript i is outside array bounds of 'dma_addr_t[0]' {aka 'long long unsigned int[]'} [-Warray-bounds=]
416 | #define dma_unmap_page(d, a, s, r) dma_unmap_page_attrs(d, a, s, r, 0)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/ethernet/marvell/sky2.c:1257:17: note: in expansion of macro 'dma_unmap_page'
1257 | dma_unmap_page(&pdev->dev, re->frag_addr[i],
| ^~~~~~~~~~~~~~
In file included from drivers/net/ethernet/marvell/sky2.c:41:
drivers/net/ethernet/marvell/sky2.h:2198:25: note: while referencing 'frag_addr'
2198 | dma_addr_t frag_addr[ETH_JUMBO_MTU >> PAGE_SHIFT];
| ^~~~~~~~~
drivers/net/ethernet/marvell/sky2.c: In function 'sky2_rx_submit':
>> drivers/net/ethernet/marvell/sky2.c:1202:59: warning: array subscript i is outside array bounds of 'const dma_addr_t[0]' {aka 'const long long unsigned int[]'} [-Warray-bounds=]
1202 | sky2_rx_add(sky2, OP_BUFFER, re->frag_addr[i], PAGE_SIZE);
| ~~~~~~~~~~~~~^~~
drivers/net/ethernet/marvell/sky2.h:2198:25: note: while referencing 'frag_addr'
2198 | dma_addr_t frag_addr[ETH_JUMBO_MTU >> PAGE_SHIFT];
| ^~~~~~~~~
drivers/net/ethernet/marvell/sky2.c: In function 'sky2_rx_map_skb':
>> drivers/net/ethernet/marvell/sky2.c:1222:30: warning: array subscript i is outside array bounds of 'dma_addr_t[0]' {aka 'long long unsigned int[]'} [-Warray-bounds=]
1222 | re->frag_addr[i] = skb_frag_dma_map(&pdev->dev, frag, 0,
| ~~~~~~~~~~~~~^~~
drivers/net/ethernet/marvell/sky2.h:2198:25: note: while referencing 'frag_addr'
2198 | dma_addr_t frag_addr[ETH_JUMBO_MTU >> PAGE_SHIFT];
| ^~~~~~~~~
>> include/linux/dma-mapping.h:416:36: warning: array subscript i is outside array bounds of 'dma_addr_t[0]' {aka 'long long unsigned int[]'} [-Warray-bounds=]
416 | #define dma_unmap_page(d, a, s, r) dma_unmap_page_attrs(d, a, s, r, 0)
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/net/ethernet/marvell/sky2.c:1233:17: note: in expansion of macro 'dma_unmap_page'
1233 | dma_unmap_page(&pdev->dev, re->frag_addr[i],
| ^~~~~~~~~~~~~~
drivers/net/ethernet/marvell/sky2.h:2198:25: note: while referencing 'frag_addr'
2198 | dma_addr_t frag_addr[ETH_JUMBO_MTU >> PAGE_SHIFT];
| ^~~~~~~~~
vim +416 include/linux/dma-mapping.h
d9d200bcebc1f6 Marek Szyprowski 2020-05-13 410
00085f1efa387a Krzysztof Kozlowski 2016-08-03 411 #define dma_map_single(d, a, s, r) dma_map_single_attrs(d, a, s, r, 0)
00085f1efa387a Krzysztof Kozlowski 2016-08-03 412 #define dma_unmap_single(d, a, s, r) dma_unmap_single_attrs(d, a, s, r, 0)
00085f1efa387a Krzysztof Kozlowski 2016-08-03 413 #define dma_map_sg(d, s, n, r) dma_map_sg_attrs(d, s, n, r, 0)
00085f1efa387a Krzysztof Kozlowski 2016-08-03 414 #define dma_unmap_sg(d, s, n, r) dma_unmap_sg_attrs(d, s, n, r, 0)
0495c3d367944e Alexander Duyck 2016-12-14 415 #define dma_map_page(d, p, o, s, r) dma_map_page_attrs(d, p, o, s, r, 0)
0495c3d367944e Alexander Duyck 2016-12-14 @416 #define dma_unmap_page(d, a, s, r) dma_unmap_page_attrs(d, a, s, r, 0)
ed6ccf10f24bdf Christoph Hellwig 2018-12-26 417 #define dma_get_sgtable(d, t, v, h, s) dma_get_sgtable_attrs(d, t, v, h, s, 0)
ed6ccf10f24bdf Christoph Hellwig 2018-12-26 418 #define dma_mmap_coherent(d, v, c, h, s) dma_mmap_attrs(d, v, c, h, s, 0)
c9eb6172c328dd Christoph Hellwig 2017-08-27 419
:::::: The code at line 416 was first introduced by commit
:::::: 0495c3d367944e4af053983ff3cdf256b567b053 dma: add calls for dma_map_page_attrs and dma_unmap_page_attrs
:::::: TO: Alexander Duyck <alexander.h.duyck@...el.com>
:::::: CC: Linus Torvalds <torvalds@...ux-foundation.org>
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