* [ammarfaizi2-block:viro/vfs/work.fd 7/8] kernel/cgroup/cgroup.c:6861:4: error: assigning to 'struct fd *' from incompatible type 'struct fd'
@ 2023-03-07 13:24 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2023-03-07 13:24 UTC (permalink / raw)
To: Al Viro; +Cc: llvm, oe-kbuild-all, Ammar Faizi, GNU/Weeb Mailing List
tree: https://github.com/ammarfaizi2/linux-block viro/vfs/work.fd
head: 792be394ebd3f30e973319f4a8019c294ca02ce2
commit: 96416baecdcc05aa7bfe16986dd9955e613ed808 [7/8] cgroup_get_from_fd(): switch to fdget_raw()
config: s390-randconfig-r034-20230305 (https://download.01.org/0day-ci/archive/20230307/[email protected]/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project 67409911353323ca5edf2049ef0df54132fa1ca7)
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/ammarfaizi2/linux-block/commit/96416baecdcc05aa7bfe16986dd9955e613ed808
git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block
git fetch --no-tags ammarfaizi2-block viro/vfs/work.fd
git checkout 96416baecdcc05aa7bfe16986dd9955e613ed808
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=s390 SHELL=/bin/bash kernel/cgroup/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <[email protected]>
| Link: https://lore.kernel.org/oe-kbuild-all/[email protected]/
All errors (new ones prefixed by >>):
In file included from kernel/cgroup/cgroup.c:33:
In file included from include/linux/bpf-cgroup.h:11:
In file included from include/net/sock.h:46:
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:10:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:547:31: 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:560:61: 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 kernel/cgroup/cgroup.c:33:
In file included from include/linux/bpf-cgroup.h:11:
In file included from include/net/sock.h:46:
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:10:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:573:61: 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 kernel/cgroup/cgroup.c:33:
In file included from include/linux/bpf-cgroup.h:11:
In file included from include/net/sock.h:46:
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:10:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:75:
include/asm-generic/io.h:584:33: 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:594:59: 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:604:59: 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:692:20: 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:700:20: 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:708:20: 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:717:21: 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:726:21: 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:735:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
writesl(PCI_IOBASE + addr, buffer, count);
~~~~~~~~~~ ^
>> kernel/cgroup/cgroup.c:6861:4: error: assigning to 'struct fd *' from incompatible type 'struct fd'
f = fdget_raw(fd);
^ ~~~~~~~~~~~~~
>> kernel/cgroup/cgroup.c:6862:8: error: member reference type 'struct fd *' is a pointer; did you mean to use '->'?
if (!f.file)
~^
->
kernel/cgroup/cgroup.c:6865:36: error: member reference type 'struct fd *' is a pointer; did you mean to use '->'?
cgrp = cgroup_v1v2_get_from_file(f.file);
~^
->
>> kernel/cgroup/cgroup.c:6866:8: error: passing 'struct fd *' to parameter of incompatible type 'struct fd'; dereference with *
fdput(f);
^
*
include/linux/file.h:42:36: note: passing argument to parameter 'fd' here
static inline void fdput(struct fd fd)
^
12 warnings and 4 errors generated.
vim +6861 kernel/cgroup/cgroup.c
6846
6847 /**
6848 * cgroup_v1v2_get_from_fd - get a cgroup pointer from a fd
6849 * @fd: fd obtained by open(cgroup_dir)
6850 *
6851 * Find the cgroup from a fd which should be obtained
6852 * by opening a cgroup directory. Returns a pointer to the
6853 * cgroup on success. ERR_PTR is returned if the cgroup
6854 * cannot be found.
6855 */
6856 struct cgroup *cgroup_v1v2_get_from_fd(int fd)
6857 {
6858 struct cgroup *cgrp;
6859 struct fd *f;
6860
> 6861 f = fdget_raw(fd);
> 6862 if (!f.file)
6863 return ERR_PTR(-EBADF);
6864
6865 cgrp = cgroup_v1v2_get_from_file(f.file);
> 6866 fdput(f);
6867 return cgrp;
6868 }
6869
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests
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