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Date: Sun, 3 Oct 2021 08:48:34 +0800
From: kernel test robot <lkp@...el.com>
To: Christophe Leroy <christophe.leroy@...roup.eu>
Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
Michael Ellerman <mpe@...erman.id.au>
Subject: fs/buffer.c:2342:1: warning: the frame size of 2056 bytes is larger
than 1024 bytes
Hi Christophe,
First bad commit (maybe != root cause):
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 02d5e016800d082058b3d3b7c3ede136cdc6ddcb
commit: 4eeef098b43242ed145c83fba9989d586d707589 powerpc/44x: Remove STDBINUTILS kconfig option
date: 8 months ago
config: powerpc64-randconfig-r033-20211003 (attached as .config)
compiler: powerpc-linux-gcc (GCC) 11.2.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4eeef098b43242ed145c83fba9989d586d707589
git remote add linus https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout 4eeef098b43242ed145c83fba9989d586d707589
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross ARCH=powerpc
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All warnings (new ones prefixed by >>):
fs/buffer.c: In function 'block_read_full_page':
>> fs/buffer.c:2342:1: warning: the frame size of 2056 bytes is larger than 1024 bytes [-Wframe-larger-than=]
2342 | }
| ^
--
In file included from arch/powerpc/include/asm/thread_info.h:13,
from include/linux/thread_info.h:56,
from include/asm-generic/preempt.h:5,
from ./arch/powerpc/include/generated/asm/preempt.h:1,
from include/linux/preempt.h:78,
from include/linux/spinlock.h:51,
from include/linux/mmzone.h:8,
from include/linux/gfp.h:6,
from include/linux/umh.h:4,
from include/linux/kmod.h:9,
from include/linux/module.h:16,
from drivers/net/vmxnet3/vmxnet3_drv.c:27:
drivers/net/vmxnet3/vmxnet3_drv.c: In function 'vmxnet3_rq_init':
>> arch/powerpc/include/asm/page.h:24:33: warning: conversion from 'long unsigned int' to 'u16' {aka 'short unsigned int'} changes value from '262144' to '0' [-Woverflow]
24 | #define PAGE_SIZE (ASM_CONST(1) << PAGE_SHIFT)
| ^
drivers/net/vmxnet3/vmxnet3_drv.c:1784:50: note: in expansion of macro 'PAGE_SIZE'
1784 | rq->buf_info[0][i].len = PAGE_SIZE;
| ^~~~~~~~~
>> arch/powerpc/include/asm/page.h:24:33: warning: conversion from 'long unsigned int' to 'u16' {aka 'short unsigned int'} changes value from '262144' to '0' [-Woverflow]
24 | #define PAGE_SIZE (ASM_CONST(1) << PAGE_SHIFT)
| ^
drivers/net/vmxnet3/vmxnet3_drv.c:1789:42: note: in expansion of macro 'PAGE_SIZE'
1789 | rq->buf_info[1][i].len = PAGE_SIZE;
| ^~~~~~~~~
--
drivers/net/ethernet/socionext/netsec.c: In function 'netsec_alloc_rx_data':
>> drivers/net/ethernet/socionext/netsec.c:247:33: warning: conversion from 'long unsigned int' to 'u16' {aka 'short unsigned int'} changes value from '261630' to '65022' [-Woverflow]
247 | #define NETSEC_RX_BUF_SIZE (PAGE_SIZE - NETSEC_RX_BUF_NON_DATA)
| ^
drivers/net/ethernet/socionext/netsec.c:750:21: note: in expansion of macro 'NETSEC_RX_BUF_SIZE'
750 | *desc_len = NETSEC_RX_BUF_SIZE;
| ^~~~~~~~~~~~~~~~~~
--
fs/ext4/move_extent.c: In function 'mext_page_mkuptodate':
>> fs/ext4/move_extent.c:227:1: warning: the frame size of 2064 bytes is larger than 1024 bytes [-Wframe-larger-than=]
227 | }
| ^
--
fs/fat/dir.c: In function 'fat_add_new_entries':
>> fs/fat/dir.c:1279:1: warning: the frame size of 2096 bytes is larger than 1024 bytes [-Wframe-larger-than=]
1279 | }
| ^
fs/fat/dir.c: In function 'fat_alloc_new_dir':
fs/fat/dir.c:1195:1: warning: the frame size of 2064 bytes is larger than 1024 bytes [-Wframe-larger-than=]
1195 | }
| ^
--
fs/fat/fatent.c: In function 'fat_free_clusters':
>> fs/fat/fatent.c:632:1: warning: the frame size of 2080 bytes is larger than 1024 bytes [-Wframe-larger-than=]
632 | }
| ^
fs/fat/fatent.c: In function 'fat_alloc_clusters':
fs/fat/fatent.c:550:1: warning: the frame size of 2128 bytes is larger than 1024 bytes [-Wframe-larger-than=]
550 | }
| ^
vim +2342 fs/buffer.c
8ab22b9abb5c55 Hisashi Hifumi 2008-07-28 2251
^1da177e4c3f41 Linus Torvalds 2005-04-16 2252 /*
^1da177e4c3f41 Linus Torvalds 2005-04-16 2253 * Generic "read page" function for block devices that have the normal
^1da177e4c3f41 Linus Torvalds 2005-04-16 2254 * get_block functionality. This is most of the block device filesystems.
^1da177e4c3f41 Linus Torvalds 2005-04-16 2255 * Reads the page asynchronously --- the unlock_buffer() and
^1da177e4c3f41 Linus Torvalds 2005-04-16 2256 * set/clear_buffer_uptodate() functions propagate buffer state into the
^1da177e4c3f41 Linus Torvalds 2005-04-16 2257 * page struct once IO has completed.
^1da177e4c3f41 Linus Torvalds 2005-04-16 2258 */
^1da177e4c3f41 Linus Torvalds 2005-04-16 2259 int block_read_full_page(struct page *page, get_block_t *get_block)
^1da177e4c3f41 Linus Torvalds 2005-04-16 2260 {
^1da177e4c3f41 Linus Torvalds 2005-04-16 2261 struct inode *inode = page->mapping->host;
^1da177e4c3f41 Linus Torvalds 2005-04-16 2262 sector_t iblock, lblock;
^1da177e4c3f41 Linus Torvalds 2005-04-16 2263 struct buffer_head *bh, *head, *arr[MAX_BUF_PER_PAGE];
45bce8f3e3436b Linus Torvalds 2012-11-29 2264 unsigned int blocksize, bbits;
^1da177e4c3f41 Linus Torvalds 2005-04-16 2265 int nr, i;
^1da177e4c3f41 Linus Torvalds 2005-04-16 2266 int fully_mapped = 1;
^1da177e4c3f41 Linus Torvalds 2005-04-16 2267
45bce8f3e3436b Linus Torvalds 2012-11-29 2268 head = create_page_buffers(page, inode, 0);
45bce8f3e3436b Linus Torvalds 2012-11-29 2269 blocksize = head->b_size;
45bce8f3e3436b Linus Torvalds 2012-11-29 2270 bbits = block_size_bits(blocksize);
^1da177e4c3f41 Linus Torvalds 2005-04-16 2271
09cbfeaf1a5a67 Kirill A. Shutemov 2016-04-01 2272 iblock = (sector_t)page->index << (PAGE_SHIFT - bbits);
45bce8f3e3436b Linus Torvalds 2012-11-29 2273 lblock = (i_size_read(inode)+blocksize-1) >> bbits;
^1da177e4c3f41 Linus Torvalds 2005-04-16 2274 bh = head;
^1da177e4c3f41 Linus Torvalds 2005-04-16 2275 nr = 0;
^1da177e4c3f41 Linus Torvalds 2005-04-16 2276 i = 0;
^1da177e4c3f41 Linus Torvalds 2005-04-16 2277
^1da177e4c3f41 Linus Torvalds 2005-04-16 2278 do {
^1da177e4c3f41 Linus Torvalds 2005-04-16 2279 if (buffer_uptodate(bh))
^1da177e4c3f41 Linus Torvalds 2005-04-16 2280 continue;
^1da177e4c3f41 Linus Torvalds 2005-04-16 2281
^1da177e4c3f41 Linus Torvalds 2005-04-16 2282 if (!buffer_mapped(bh)) {
c64610ba585fab Andrew Morton 2005-05-16 2283 int err = 0;
c64610ba585fab Andrew Morton 2005-05-16 2284
^1da177e4c3f41 Linus Torvalds 2005-04-16 2285 fully_mapped = 0;
^1da177e4c3f41 Linus Torvalds 2005-04-16 2286 if (iblock < lblock) {
b0cf2321c65991 Badari Pulavarty 2006-03-26 2287 WARN_ON(bh->b_size != blocksize);
c64610ba585fab Andrew Morton 2005-05-16 2288 err = get_block(inode, iblock, bh, 0);
c64610ba585fab Andrew Morton 2005-05-16 2289 if (err)
^1da177e4c3f41 Linus Torvalds 2005-04-16 2290 SetPageError(page);
^1da177e4c3f41 Linus Torvalds 2005-04-16 2291 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 2292 if (!buffer_mapped(bh)) {
eebd2aa355692a Christoph Lameter 2008-02-04 2293 zero_user(page, i * blocksize, blocksize);
c64610ba585fab Andrew Morton 2005-05-16 2294 if (!err)
^1da177e4c3f41 Linus Torvalds 2005-04-16 2295 set_buffer_uptodate(bh);
^1da177e4c3f41 Linus Torvalds 2005-04-16 2296 continue;
^1da177e4c3f41 Linus Torvalds 2005-04-16 2297 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 2298 /*
^1da177e4c3f41 Linus Torvalds 2005-04-16 2299 * get_block() might have updated the buffer
^1da177e4c3f41 Linus Torvalds 2005-04-16 2300 * synchronously
^1da177e4c3f41 Linus Torvalds 2005-04-16 2301 */
^1da177e4c3f41 Linus Torvalds 2005-04-16 2302 if (buffer_uptodate(bh))
^1da177e4c3f41 Linus Torvalds 2005-04-16 2303 continue;
^1da177e4c3f41 Linus Torvalds 2005-04-16 2304 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 2305 arr[nr++] = bh;
^1da177e4c3f41 Linus Torvalds 2005-04-16 2306 } while (i++, iblock++, (bh = bh->b_this_page) != head);
^1da177e4c3f41 Linus Torvalds 2005-04-16 2307
^1da177e4c3f41 Linus Torvalds 2005-04-16 2308 if (fully_mapped)
^1da177e4c3f41 Linus Torvalds 2005-04-16 2309 SetPageMappedToDisk(page);
^1da177e4c3f41 Linus Torvalds 2005-04-16 2310
^1da177e4c3f41 Linus Torvalds 2005-04-16 2311 if (!nr) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 2312 /*
^1da177e4c3f41 Linus Torvalds 2005-04-16 2313 * All buffers are uptodate - we can set the page uptodate
^1da177e4c3f41 Linus Torvalds 2005-04-16 2314 * as well. But not if get_block() returned an error.
^1da177e4c3f41 Linus Torvalds 2005-04-16 2315 */
^1da177e4c3f41 Linus Torvalds 2005-04-16 2316 if (!PageError(page))
^1da177e4c3f41 Linus Torvalds 2005-04-16 2317 SetPageUptodate(page);
^1da177e4c3f41 Linus Torvalds 2005-04-16 2318 unlock_page(page);
^1da177e4c3f41 Linus Torvalds 2005-04-16 2319 return 0;
^1da177e4c3f41 Linus Torvalds 2005-04-16 2320 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 2321
^1da177e4c3f41 Linus Torvalds 2005-04-16 2322 /* Stage two: lock the buffers */
^1da177e4c3f41 Linus Torvalds 2005-04-16 2323 for (i = 0; i < nr; i++) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 2324 bh = arr[i];
^1da177e4c3f41 Linus Torvalds 2005-04-16 2325 lock_buffer(bh);
^1da177e4c3f41 Linus Torvalds 2005-04-16 2326 mark_buffer_async_read(bh);
^1da177e4c3f41 Linus Torvalds 2005-04-16 2327 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 2328
^1da177e4c3f41 Linus Torvalds 2005-04-16 2329 /*
^1da177e4c3f41 Linus Torvalds 2005-04-16 2330 * Stage 3: start the IO. Check for uptodateness
^1da177e4c3f41 Linus Torvalds 2005-04-16 2331 * inside the buffer lock in case another process reading
^1da177e4c3f41 Linus Torvalds 2005-04-16 2332 * the underlying blockdev brought it uptodate (the sct fix).
^1da177e4c3f41 Linus Torvalds 2005-04-16 2333 */
^1da177e4c3f41 Linus Torvalds 2005-04-16 2334 for (i = 0; i < nr; i++) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 2335 bh = arr[i];
^1da177e4c3f41 Linus Torvalds 2005-04-16 2336 if (buffer_uptodate(bh))
^1da177e4c3f41 Linus Torvalds 2005-04-16 2337 end_buffer_async_read(bh, 1);
^1da177e4c3f41 Linus Torvalds 2005-04-16 2338 else
2a222ca992c35a Mike Christie 2016-06-05 2339 submit_bh(REQ_OP_READ, 0, bh);
^1da177e4c3f41 Linus Torvalds 2005-04-16 2340 }
^1da177e4c3f41 Linus Torvalds 2005-04-16 2341 return 0;
^1da177e4c3f41 Linus Torvalds 2005-04-16 @2342 }
1fe72eaa0f46a0 H Hartley Sweeten 2009-09-22 2343 EXPORT_SYMBOL(block_read_full_page);
^1da177e4c3f41 Linus Torvalds 2005-04-16 2344
:::::: The code at line 2342 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2
:::::: TO: Linus Torvalds <torvalds@...970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@...970.osdl.org>
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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