tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
master
head: 5fc6b075e165f641fbc366b58b578055762d5f8c
commit: c4d0bfb45068d853a478b9067a95969b1886a30f bpf: Add bpf_snprintf_btf
helper
date: 5 weeks ago
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <l...@intel.com>
"cppcheck warnings: (new ones prefixed by >>)"
>> kernel/trace/bpf_trace.c:1181:23: warning: Uninitialized variable: t
>> [uninitvar]
if (*btf_id <= 0 || !t)
^
vim +1181 kernel/trace/bpf_trace.c
1153
1154 #define BTF_F_ALL (BTF_F_COMPACT | BTF_F_NONAME | \
1155 BTF_F_PTR_RAW | BTF_F_ZERO)
1156
1157 static int bpf_btf_printf_prepare(struct btf_ptr *ptr, u32 btf_ptr_size,
1158 u64 flags, const struct btf **btf,
1159 s32 *btf_id)
1160 {
1161 const struct btf_type *t;
1162
1163 if (unlikely(flags & ~(BTF_F_ALL)))
1164 return -EINVAL;
1165
1166 if (btf_ptr_size != sizeof(struct btf_ptr))
1167 return -EINVAL;
1168
1169 *btf = bpf_get_btf_vmlinux();
1170
1171 if (IS_ERR_OR_NULL(*btf))
1172 return PTR_ERR(*btf);
1173
1174 if (ptr->type_id > 0)
1175 *btf_id = ptr->type_id;
1176 else
1177 return -EINVAL;
1178
1179 if (*btf_id > 0)
1180 t = btf_type_by_id(*btf, *btf_id);
> 1181 if (*btf_id <= 0 || !t)
1182 return -ENOENT;
1183
1184 return 0;
1185 }
1186
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-...@lists.01.org
