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Message-ID: <202506240437.yrXLeKyv-lkp@intel.com>
Date: Tue, 24 Jun 2025 04:43:01 +0800
From: kernel test robot <lkp@...el.com>
To: Junfeng Guo <junfeng.guo@...el.com>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
linux-kernel@...r.kernel.org,
Tony Nguyen <anthony.l.nguyen@...el.com>,
Marcin Szycik <marcin.szycik@...ux.intel.com>,
Qi Zhang <qi.z.zhang@...el.com>, Ahmed Zaki <ahmed.zaki@...el.com>
Subject: drivers/net/ethernet/intel/ice/ice_parser.c:1231:34: warning: stack
frame size (1040) exceeds limit (1024) in 'ice_bst_tcam_table_get'
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 86731a2a651e58953fc949573895f2fa6d456841
commit: 68add288189a5490868ccf8cbed273320568928d ice: add debugging functions for the parser sections
date: 10 months ago
config: s390-allmodconfig (https://download.01.org/0day-ci/archive/20250624/202506240437.yrXLeKyv-lkp@intel.com/config)
compiler: clang version 18.1.8 (https://github.com/llvm/llvm-project 3b5b5c1ec4a3095ab096dd780e84d7ab81f3d7ff)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250624/202506240437.yrXLeKyv-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/202506240437.yrXLeKyv-lkp@intel.com/
All warnings (new ones prefixed by >>):
In file included from drivers/net/ethernet/intel/ice/ice_parser.c:4:
In file included from drivers/net/ethernet/intel/ice/ice_common.h:9:
In file included from drivers/net/ethernet/intel/ice/ice.h:12:
In file included from include/linux/netdevice.h:38:
In file included from include/net/net_namespace.h:43:
In file included from include/linux/skbuff.h:28:
In file included from include/linux/dma-mapping.h:11:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:93:
include/asm-generic/io.h:548:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
548 | val = __raw_readb(PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
561 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu'
37 | #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
| ^
include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16'
102 | #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
| ^
In file included from drivers/net/ethernet/intel/ice/ice_parser.c:4:
In file included from drivers/net/ethernet/intel/ice/ice_common.h:9:
In file included from drivers/net/ethernet/intel/ice/ice.h:12:
In file included from include/linux/netdevice.h:38:
In file included from include/net/net_namespace.h:43:
In file included from include/linux/skbuff.h:28:
In file included from include/linux/dma-mapping.h:11:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:93:
include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
574 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu'
35 | #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
| ^
include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32'
115 | #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
| ^
In file included from drivers/net/ethernet/intel/ice/ice_parser.c:4:
In file included from drivers/net/ethernet/intel/ice/ice_common.h:9:
In file included from drivers/net/ethernet/intel/ice/ice.h:12:
In file included from include/linux/netdevice.h:38:
In file included from include/net/net_namespace.h:43:
In file included from include/linux/skbuff.h:28:
In file included from include/linux/dma-mapping.h:11:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:93:
include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
585 | __raw_writeb(value, PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
595 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
605 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:693:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
693 | readsb(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:701:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
701 | readsw(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:709:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
709 | readsl(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:718:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
718 | writesb(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:727:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
727 | writesw(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:736:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
736 | writesl(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
>> drivers/net/ethernet/intel/ice/ice_parser.c:1231:34: warning: stack frame size (1040) exceeds limit (1024) in 'ice_bst_tcam_table_get' [-Wframe-larger-than]
1231 | static struct ice_bst_tcam_item *ice_bst_tcam_table_get(struct ice_hw *hw)
| ^
13 warnings generated.
vim +/ice_bst_tcam_table_get +1231 drivers/net/ethernet/intel/ice/ice_parser.c
75b4a938a94778 Junfeng Guo 2024-07-25 1224
75b4a938a94778 Junfeng Guo 2024-07-25 1225 /**
75b4a938a94778 Junfeng Guo 2024-07-25 1226 * ice_bst_tcam_table_get - create a boost tcam table
75b4a938a94778 Junfeng Guo 2024-07-25 1227 * @hw: pointer to the hardware structure
75b4a938a94778 Junfeng Guo 2024-07-25 1228 *
75b4a938a94778 Junfeng Guo 2024-07-25 1229 * Return: a pointer to the allocated Boost TCAM table.
75b4a938a94778 Junfeng Guo 2024-07-25 1230 */
75b4a938a94778 Junfeng Guo 2024-07-25 @1231 static struct ice_bst_tcam_item *ice_bst_tcam_table_get(struct ice_hw *hw)
75b4a938a94778 Junfeng Guo 2024-07-25 1232 {
75b4a938a94778 Junfeng Guo 2024-07-25 1233 return ice_parser_create_table(hw, ICE_SID_RXPARSER_BOOST_TCAM,
75b4a938a94778 Junfeng Guo 2024-07-25 1234 sizeof(struct ice_bst_tcam_item),
75b4a938a94778 Junfeng Guo 2024-07-25 1235 ICE_BST_TCAM_TABLE_SIZE,
75b4a938a94778 Junfeng Guo 2024-07-25 1236 ice_bst_parse_item, true);
75b4a938a94778 Junfeng Guo 2024-07-25 1237 }
75b4a938a94778 Junfeng Guo 2024-07-25 1238
:::::: The code at line 1231 was first introduced by commit
:::::: 75b4a938a947785cdda8908cb700c58e95f8ff69 ice: parse and init various DDP parser sections
:::::: TO: Junfeng Guo <junfeng.guo@...el.com>
:::::: CC: Tony Nguyen <anthony.l.nguyen@...el.com>
--
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https://github.com/intel/lkp-tests/wiki
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