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Message-ID: <202206100713.eqeobRjO-lkp@intel.com>
Date: Fri, 10 Jun 2022 07:21:05 +0800
From: kernel test robot <lkp@...el.com>
To: Logan Gunthorpe <logang@...tatee.com>
Cc: llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
linux-kernel@...r.kernel.org
Subject: [sbates130272-p2pmem:p2pdma_user_cmb_v7 20/21]
include/linux/pci-p2pdma.h:99:1: error: non-void function does not return a
value
tree: https://github.com/sbates130272/linux-p2pmem.git p2pdma_user_cmb_v7
head: 45dd3bf6fe468175153066cb70820a2b2edbc61b
commit: 54606cc552a950ad3eaa201cd8b1a2d1f2e6abd3 [20/21] PCI/P2PDMA: Introduce pci_mmap_p2pmem()
config: s390-randconfig-r005-20220608 (https://download.01.org/0day-ci/archive/20220610/202206100713.eqeobRjO-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 971e13d69e3e7b687213fef22952be6a328c426c)
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
# install s390 cross compiling tool for clang build
# apt-get install binutils-s390x-linux-gnu
# https://github.com/sbates130272/linux-p2pmem/commit/54606cc552a950ad3eaa201cd8b1a2d1f2e6abd3
git remote add sbates130272-p2pmem https://github.com/sbates130272/linux-p2pmem.git
git fetch --no-tags sbates130272-p2pmem p2pdma_user_cmb_v7
git checkout 54606cc552a950ad3eaa201cd8b1a2d1f2e6abd3
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash drivers/nvme/target/
If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@...el.com>
All errors (new ones prefixed by >>):
In file included from drivers/nvme/target/configfs.c:12:
In file included from include/linux/pci.h:39:
In file included from include/linux/io.h:13:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:464:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __raw_readb(PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:477:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
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'
#define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
^
include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16'
#define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
^
In file included from drivers/nvme/target/configfs.c:12:
In file included from include/linux/pci.h:39:
In file included from include/linux/io.h:13:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:490:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
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'
#define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
^
include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32'
#define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
^
In file included from drivers/nvme/target/configfs.c:12:
In file included from include/linux/pci.h:39:
In file included from include/linux/io.h:13:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:501:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writeb(value, PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:511:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:521:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:609:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsb(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:617:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsw(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:625:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsl(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:634:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesb(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:643:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesw(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:652:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesl(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
In file included from drivers/nvme/target/configfs.c:13:
>> include/linux/pci-p2pdma.h:99:1: error: non-void function does not return a value [-Werror,-Wreturn-type]
}
^
12 warnings and 1 error generated.
--
In file included from drivers/nvme/target/core.c:10:
In file included from include/linux/pci-p2pdma.h:14:
In file included from include/linux/pci.h:39:
In file included from include/linux/io.h:13:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:464:31: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
val = __raw_readb(PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:477:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
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'
#define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
^
include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16'
#define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
^
In file included from drivers/nvme/target/core.c:10:
In file included from include/linux/pci-p2pdma.h:14:
In file included from include/linux/pci.h:39:
In file included from include/linux/io.h:13:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:490:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
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'
#define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
^
include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32'
#define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
^
In file included from drivers/nvme/target/core.c:10:
In file included from include/linux/pci-p2pdma.h:14:
In file included from include/linux/pci.h:39:
In file included from include/linux/io.h:13:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:501:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writeb(value, PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:511:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:521:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
__raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
~~~~~~~~~~ ^
include/asm-generic/io.h:609:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsb(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:617:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsw(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:625:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
readsl(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:634:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesb(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:643:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesw(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
include/asm-generic/io.h:652:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesl(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
In file included from drivers/nvme/target/core.c:10:
>> include/linux/pci-p2pdma.h:99:1: error: non-void function does not return a value [-Werror,-Wreturn-type]
}
^
In file included from drivers/nvme/target/core.c:14:
In file included from drivers/nvme/target/trace.h:165:
include/trace/define_trace.h:95:10: fatal error: './trace.h' file not found
#include TRACE_INCLUDE(TRACE_INCLUDE_FILE)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/trace/define_trace.h:90:32: note: expanded from macro 'TRACE_INCLUDE'
# define TRACE_INCLUDE(system) __TRACE_INCLUDE(system)
^~~~~~~~~~~~~~~~~~~~~~~
include/trace/define_trace.h:87:34: note: expanded from macro '__TRACE_INCLUDE'
# define __TRACE_INCLUDE(system) __stringify(TRACE_INCLUDE_PATH/system.h)
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
include/linux/stringify.h:10:27: note: expanded from macro '__stringify'
#define __stringify(x...) __stringify_1(x)
^~~~~~~~~~~~~~~~
include/linux/stringify.h:9:29: note: expanded from macro '__stringify_1'
#define __stringify_1(x...) #x
^~
<scratch space>:87:1: note: expanded from here
"./trace.h"
^~~~~~~~~~~
12 warnings and 2 errors generated.
vim +99 include/linux/pci-p2pdma.h
18
19 #ifdef CONFIG_PCI_P2PDMA
20 int pci_p2pdma_add_resource(struct pci_dev *pdev, int bar, size_t size,
21 u64 offset);
22 int pci_p2pdma_distance_many(struct pci_dev *provider, struct device **clients,
23 int num_clients, bool verbose);
24 bool pci_has_p2pmem(struct pci_dev *pdev);
25 struct pci_dev *pci_p2pmem_find_many(struct device **clients, int num_clients);
26 void *pci_alloc_p2pmem(struct pci_dev *pdev, size_t size);
27 void pci_free_p2pmem(struct pci_dev *pdev, void *addr, size_t size);
28 pci_bus_addr_t pci_p2pmem_virt_to_bus(struct pci_dev *pdev, void *addr);
29 struct scatterlist *pci_p2pmem_alloc_sgl(struct pci_dev *pdev,
30 unsigned int *nents, u32 length);
31 void pci_p2pmem_free_sgl(struct pci_dev *pdev, struct scatterlist *sgl);
32 void pci_p2pmem_publish(struct pci_dev *pdev, bool publish);
33 int pci_p2pdma_enable_store(const char *page, struct pci_dev **p2p_dev,
34 bool *use_p2pdma);
35 ssize_t pci_p2pdma_enable_show(char *page, struct pci_dev *p2p_dev,
36 bool use_p2pdma);
37 int pci_p2pdma_file_open(struct pci_dev *pdev, struct file *file);
38 void pci_p2pdma_file_release(struct file *file);
39 int pci_mmap_p2pmem(struct pci_dev *pdev, struct vm_area_struct *vma);
40 #else /* CONFIG_PCI_P2PDMA */
41 static inline int pci_p2pdma_add_resource(struct pci_dev *pdev, int bar,
42 size_t size, u64 offset)
43 {
44 return -EOPNOTSUPP;
45 }
46 static inline int pci_p2pdma_distance_many(struct pci_dev *provider,
47 struct device **clients, int num_clients, bool verbose)
48 {
49 return -1;
50 }
51 static inline bool pci_has_p2pmem(struct pci_dev *pdev)
52 {
53 return false;
54 }
55 static inline struct pci_dev *pci_p2pmem_find_many(struct device **clients,
56 int num_clients)
57 {
58 return NULL;
59 }
60 static inline void *pci_alloc_p2pmem(struct pci_dev *pdev, size_t size)
61 {
62 return NULL;
63 }
64 static inline void pci_free_p2pmem(struct pci_dev *pdev, void *addr,
65 size_t size)
66 {
67 }
68 static inline pci_bus_addr_t pci_p2pmem_virt_to_bus(struct pci_dev *pdev,
69 void *addr)
70 {
71 return 0;
72 }
73 static inline struct scatterlist *pci_p2pmem_alloc_sgl(struct pci_dev *pdev,
74 unsigned int *nents, u32 length)
75 {
76 return NULL;
77 }
78 static inline void pci_p2pmem_free_sgl(struct pci_dev *pdev,
79 struct scatterlist *sgl)
80 {
81 }
82 static inline void pci_p2pmem_publish(struct pci_dev *pdev, bool publish)
83 {
84 }
85 static inline int pci_p2pdma_enable_store(const char *page,
86 struct pci_dev **p2p_dev, bool *use_p2pdma)
87 {
88 *use_p2pdma = false;
89 return 0;
90 }
91 static inline ssize_t pci_p2pdma_enable_show(char *page,
92 struct pci_dev *p2p_dev, bool use_p2pdma)
93 {
94 return sprintf(page, "none\n");
95 }
96 static inline int pci_p2pdma_file_open(struct pci_dev *pdev,
97 struct file *file)
98 {
> 99 }
100 static inline void pci_p2pdma_file_release(struct file *file)
101 {
102 }
103 static inline int pci_mmap_p2pmem(struct pci_dev *pdev,
104 struct vm_area_struct *vma)
105 {
106 return -EOPNOTSUPP;
107 }
108 #endif /* CONFIG_PCI_P2PDMA */
109
110
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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