3:06 a.m.
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 1d1df41c5a33359a00e919d54eaebfb789711fdc
commit: c196906d50e360d82ed9aa5596a9d0ce89b7ab78 bpf: Add dummy BPF STRUCT_OPS for test
purpose
date: 3 months ago
config: mips-randconfig-r003-20220118
(https://download.01.org/0day-ci/archive/20220120/202201200024.lLbhNvJC-lk...)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project
5f782d25a742302d25ef3c8b84b54f7483c2deb9)
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 mips cross compiling tool for clang build
# apt-get install binutils-mips-linux-gnu
#
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit...
git remote add linus
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
git fetch --no-tags linus master
git checkout c196906d50e360d82ed9aa5596a9d0ce89b7ab78
# save the config file to linux build tree
mkdir build_dir
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir
ARCH=mips SHELL=/bin/bash drivers/cxl/ mm// net/
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
All errors (new ones prefixed by >>):
> net/bpf/bpf_dummy_struct_ops.c:122:6: error: unexpected token,
expected comma
if (put_user(prog_ret, &uattr->test.retval))
^
arch/mips/include/asm/uaccess.h:112:33: note: expanded from macro 'put_user'
access_ok(__p, sizeof(*__p)) ? __put_user((x), __p) : -EFAULT; \
^
arch/mips/include/asm/uaccess.h:177:18: note: expanded from macro '__put_user'
__put_data_asm(user_sw, __pu_ptr); \
^
<inline asm>:3:10: note: instantiated into assembly here
.set eva
^
> net/bpf/bpf_dummy_struct_ops.c:122:6: error: invalid operand for
instruction
if (put_user(prog_ret, &uattr->test.retval))
^
arch/mips/include/asm/uaccess.h:112:33: note: expanded from macro 'put_user'
access_ok(__p, sizeof(*__p)) ? __put_user((x), __p) : -EFAULT; \
^
arch/mips/include/asm/uaccess.h:177:18: note: expanded from macro '__put_user'
__put_data_asm(user_sw, __pu_ptr); \
^
<inline asm>:4:11: note: instantiated into assembly here
swe $19, 0($2)
^
2 errors generated.
vim +122 net/bpf/bpf_dummy_struct_ops.c
74
75 int bpf_struct_ops_test_run(struct bpf_prog *prog, const union bpf_attr *kattr,
76 union bpf_attr __user *uattr)
77 {
78 const struct bpf_struct_ops *st_ops = &bpf_bpf_dummy_ops;
79 const struct btf_type *func_proto;
80 struct bpf_dummy_ops_test_args *args;
81 struct bpf_tramp_progs *tprogs;
82 void *image = NULL;
83 unsigned int op_idx;
84 int prog_ret;
85 int err;
86
87 if (prog->aux->attach_btf_id != st_ops->type_id)
88 return -EOPNOTSUPP;
89
90 func_proto = prog->aux->attach_func_proto;
91 args = dummy_ops_init_args(kattr, btf_type_vlen(func_proto));
92 if (IS_ERR(args))
93 return PTR_ERR(args);
94
95 tprogs = kcalloc(BPF_TRAMP_MAX, sizeof(*tprogs), GFP_KERNEL);
96 if (!tprogs) {
97 err = -ENOMEM;
98 goto out;
99 }
100
101 image = bpf_jit_alloc_exec(PAGE_SIZE);
102 if (!image) {
103 err = -ENOMEM;
104 goto out;
105 }
106 set_vm_flush_reset_perms(image);
107
108 op_idx = prog->expected_attach_type;
109 err = bpf_struct_ops_prepare_trampoline(tprogs, prog,
110 &st_ops->func_models[op_idx],
111 image, image + PAGE_SIZE);
112 if (err < 0)
113 goto out;
114
115 set_memory_ro((long)image, 1);
116 set_memory_x((long)image, 1);
117 prog_ret = dummy_ops_call_op(image, args);
118
119 err = dummy_ops_copy_args(args);
120 if (err)
121 goto out;
122 if (put_user(prog_ret, &uattr->test.retval))
123 err = -EFAULT;
124 out:
125 kfree(args);
126 bpf_jit_free_exec(image);
127 kfree(tprogs);
128 return err;
129 }
130
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org