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Date: Sat, 9 Jul 2016 22:35:22 +0530
From: arvind Yadav <arvind.yadav.cs@...il.com>
To: kbuild test robot <lkp@...el.com>
Cc: kbuild-all@...org, zajec5@...il.com, viresh.kumar@...aro.org,
akpm@...ux-foundation.org, linux-wireless@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: Re: [v1] ErrHandling:Make IS_ERR_VALUE_U32 as generic API to avoid
IS_ERR_VALUE abuses.
Hi,
I have summited one more version-2 patch. Please test on that. please
share your result with us.
Thanks,
Arvind yadav
On Saturday 09 July 2016 10:08 PM, kbuild test robot wrote:
> Hi,
>
> [auto build test WARNING on v4.7-rc6]
> [also build test WARNING on next-20160708]
> [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
>
> url: https://github.com/0day-ci/linux/commits/Arvind-Yadav/ErrHandling-Make-IS_ERR_VALUE_U32-as-generic-API-to-avoid-IS_ERR_VALUE-abuses/20160709-235356
> config: x86_64-rhel (attached as .config)
> compiler: gcc-4.9 (Debian 4.9.3-14) 4.9.3
> reproduce:
> # save the attached .config to linux build tree
> make ARCH=x86_64
>
> All warnings (new ones prefixed by >>):
>
> In file included from include/uapi/linux/stddef.h:1:0,
> from include/linux/stddef.h:4,
> from include/uapi/linux/posix_types.h:4,
> from include/uapi/linux/types.h:13,
> from include/linux/types.h:5,
> from include/linux/mod_devicetable.h:11,
> from include/linux/pci.h:20,
> from include/linux/bcma/bcma.h:4,
> from drivers/bcma/bcma_private.h:8,
> from drivers/bcma/scan.c:9:
> drivers/bcma/scan.c: In function 'bcma_get_next_core':
> include/linux/err.h:23:52: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
> #define IS_ERR_VALUE_U32(x) unlikely((unsigned int)(void *)(x) >= (unsigned int)-MAX_ERRNO)
> ^
> include/linux/compiler.h:170:42: note: in definition of macro 'unlikely'
> # define unlikely(x) __builtin_expect(!!(x), 0)
> ^
>>> drivers/bcma/scan.c:361:18: note: in expansion of macro 'IS_ERR_VALUE_U32'
> if (tmp == 0 || IS_ERR_VALUE_U32(tmp)) {
> ^
>>> include/linux/err.h:23:38: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
> #define IS_ERR_VALUE_U32(x) unlikely((unsigned int)(void *)(x) >= (unsigned int)-MAX_ERRNO)
> ^
> include/linux/compiler.h:170:42: note: in definition of macro 'unlikely'
> # define unlikely(x) __builtin_expect(!!(x), 0)
> ^
>>> drivers/bcma/scan.c:361:18: note: in expansion of macro 'IS_ERR_VALUE_U32'
> if (tmp == 0 || IS_ERR_VALUE_U32(tmp)) {
> ^
> include/linux/err.h:23:52: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
> #define IS_ERR_VALUE_U32(x) unlikely((unsigned int)(void *)(x) >= (unsigned int)-MAX_ERRNO)
> ^
> include/linux/compiler.h:170:42: note: in definition of macro 'unlikely'
> # define unlikely(x) __builtin_expect(!!(x), 0)
> ^
> drivers/bcma/scan.c:365:19: note: in expansion of macro 'IS_ERR_VALUE_U32'
> if (tmp == 0 || IS_ERR_VALUE_U32(tmp)) {
> ^
>>> include/linux/err.h:23:38: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
> #define IS_ERR_VALUE_U32(x) unlikely((unsigned int)(void *)(x) >= (unsigned int)-MAX_ERRNO)
> ^
> include/linux/compiler.h:170:42: note: in definition of macro 'unlikely'
> # define unlikely(x) __builtin_expect(!!(x), 0)
> ^
> drivers/bcma/scan.c:365:19: note: in expansion of macro 'IS_ERR_VALUE_U32'
> if (tmp == 0 || IS_ERR_VALUE_U32(tmp)) {
> ^
> include/linux/err.h:23:52: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
> #define IS_ERR_VALUE_U32(x) unlikely((unsigned int)(void *)(x) >= (unsigned int)-MAX_ERRNO)
> ^
> include/linux/compiler.h:170:42: note: in definition of macro 'unlikely'
> # define unlikely(x) __builtin_expect(!!(x), 0)
> ^
> drivers/bcma/scan.c:380:8: note: in expansion of macro 'IS_ERR_VALUE_U32'
> if (IS_ERR_VALUE_U32(tmp)) {
> ^
>>> include/linux/err.h:23:38: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
> #define IS_ERR_VALUE_U32(x) unlikely((unsigned int)(void *)(x) >= (unsigned int)-MAX_ERRNO)
> ^
> include/linux/compiler.h:170:42: note: in definition of macro 'unlikely'
> # define unlikely(x) __builtin_expect(!!(x), 0)
> ^
> drivers/bcma/scan.c:380:8: note: in expansion of macro 'IS_ERR_VALUE_U32'
> if (IS_ERR_VALUE_U32(tmp)) {
> ^
> include/linux/err.h:23:52: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
> #define IS_ERR_VALUE_U32(x) unlikely((unsigned int)(void *)(x) >= (unsigned int)-MAX_ERRNO)
> ^
> include/linux/compiler.h:170:42: note: in definition of macro 'unlikely'
> # define unlikely(x) __builtin_expect(!!(x), 0)
> ^
> drivers/bcma/scan.c:397:8: note: in expansion of macro 'IS_ERR_VALUE_U32'
> if (IS_ERR_VALUE_U32(tmp)) {
> ^
>>> include/linux/err.h:23:38: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
> #define IS_ERR_VALUE_U32(x) unlikely((unsigned int)(void *)(x) >= (unsigned int)-MAX_ERRNO)
> ^
> include/linux/compiler.h:170:42: note: in definition of macro 'unlikely'
> # define unlikely(x) __builtin_expect(!!(x), 0)
> ^
> drivers/bcma/scan.c:397:8: note: in expansion of macro 'IS_ERR_VALUE_U32'
> if (IS_ERR_VALUE_U32(tmp)) {
> ^
> include/linux/err.h:23:52: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
> #define IS_ERR_VALUE_U32(x) unlikely((unsigned int)(void *)(x) >= (unsigned int)-MAX_ERRNO)
> ^
> include/linux/compiler.h:170:42: note: in definition of macro 'unlikely'
> # define unlikely(x) __builtin_expect(!!(x), 0)
> ^
> drivers/bcma/scan.c:415:8: note: in expansion of macro 'IS_ERR_VALUE_U32'
> if (IS_ERR_VALUE_U32(tmp)) {
> ^
>>> include/linux/err.h:23:38: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
> #define IS_ERR_VALUE_U32(x) unlikely((unsigned int)(void *)(x) >= (unsigned int)-MAX_ERRNO)
> ^
> include/linux/compiler.h:170:42: note: in definition of macro 'unlikely'
> # define unlikely(x) __builtin_expect(!!(x), 0)
> ^
> drivers/bcma/scan.c:415:8: note: in expansion of macro 'IS_ERR_VALUE_U32'
> if (IS_ERR_VALUE_U32(tmp)) {
> ^
>
> vim +/IS_ERR_VALUE_U32 +361 drivers/bcma/scan.c
>
> 517f43e5 Hauke Mehrtens 2011-07-23 345 )) {
> 517f43e5 Hauke Mehrtens 2011-07-23 346 bcma_erom_skip_component(bus, eromptr);
> 517f43e5 Hauke Mehrtens 2011-07-23 347 return -ENODEV;
> 517f43e5 Hauke Mehrtens 2011-07-23 348 }
> 517f43e5 Hauke Mehrtens 2011-07-23 349
> 8369ae33 Rafał Miłecki 2011-05-09 350 /* get & parse master ports */
> 8369ae33 Rafał Miłecki 2011-05-09 351 for (i = 0; i < ports[0]; i++) {
> 4e0d8cc1 Dan Carpenter 2011-08-23 352 s32 mst_port_d = bcma_erom_get_mst_port(bus, eromptr);
> 982eee67 Hauke Mehrtens 2011-07-23 353 if (mst_port_d < 0)
> 982eee67 Hauke Mehrtens 2011-07-23 354 return -EILSEQ;
> 8369ae33 Rafał Miłecki 2011-05-09 355 }
> 8369ae33 Rafał Miłecki 2011-05-09 356
> e167d9fb Hauke Mehrtens 2012-03-15 357 /* First Slave Address Descriptor should be port 0:
> e167d9fb Hauke Mehrtens 2012-03-15 358 * the main register space for the core
> e167d9fb Hauke Mehrtens 2012-03-15 359 */
> e167d9fb Hauke Mehrtens 2012-03-15 360 tmp = bcma_erom_get_addr_desc(bus, eromptr, SCAN_ADDR_TYPE_SLAVE, 0);
> aaa2ced1 Hauke Mehrtens 2013-09-07 @361 if (tmp == 0 || IS_ERR_VALUE_U32(tmp)) {
> e167d9fb Hauke Mehrtens 2012-03-15 362 /* Try again to see if it is a bridge */
> e167d9fb Hauke Mehrtens 2012-03-15 363 tmp = bcma_erom_get_addr_desc(bus, eromptr,
> e167d9fb Hauke Mehrtens 2012-03-15 364 SCAN_ADDR_TYPE_BRIDGE, 0);
> aaa2ced1 Hauke Mehrtens 2013-09-07 365 if (tmp == 0 || IS_ERR_VALUE_U32(tmp)) {
> e167d9fb Hauke Mehrtens 2012-03-15 366 return -EILSEQ;
> e167d9fb Hauke Mehrtens 2012-03-15 367 } else {
> 3d9d8af3 Rafał Miłecki 2012-07-05 368 bcma_info(bus, "Bridge found\n");
> e167d9fb Hauke Mehrtens 2012-03-15 369 return -ENXIO;
>
> :::::: The code at line 361 was first introduced by commit
> :::::: aaa2ced15ad8dca8048666c9f70736424d696a6b bcma: fix error code handling on 64 Bit systems
>
> :::::: TO: Hauke Mehrtens <hauke@...ke-m.de>
> :::::: CC: John W. Linville <linville@...driver.com>
>
> ---
> 0-DAY kernel test infrastructure Open Source Technology Center
> https://lists.01.org/pipermail/kbuild-all Intel Corporation
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