10:55 p.m.
Hi Andrii,
[FYI, it's a private test report for your RFC patch.]
[auto build test WARNING on bpf-next/master]
url:
https://github.com/0day-ci/linux/commits/Andrii-Nakryiko/Support-kernel-m...
base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
config: i386-randconfig-r036-20201209 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-15) 9.3.0
reproduce (this is a W=1 build):
#
https://github.com/0day-ci/linux/commit/6612e8dbf119471e023d79a56d7834fce...
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review
Andrii-Nakryiko/Support-kernel-module-ksym-variables/20201211-123414
git checkout 6612e8dbf119471e023d79a56d7834fceeb3e33b
# save the attached .config to linux build tree
make W=1 ARCH=i386
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp(a)intel.com>
All warnings (new ones prefixed by >>):
kernel/bpf/core.c:1350:12: warning: no previous prototype for
'bpf_probe_read_kernel' [-Wmissing-prototypes]
1350 | u64 __weak bpf_probe_read_kernel(void *dst, u32 size, const void *unsafe_ptr)
| ^~~~~~~~~~~~~~~~~~~~~
In file included from kernel/bpf/core.c:21:
kernel/bpf/core.c: In function '___bpf_prog_run':
include/linux/filter.h:888:3: warning: cast between incompatible function types from
'u64 (*)(u64, u64, u64, u64, u64)' {aka 'long long unsigned int (*)(long
long unsigned int, long long unsigned int, long long unsigned int, long long unsigned
int, long long unsigned int)'} to 'u64 (*)(u64, u64, u64, u64, u64, const
struct bpf_insn *)' {aka 'long long unsigned int (*)(long long unsigned int, long
long unsigned int, long long unsigned int, long long unsigned int, long long unsigned
int, const struct bpf_insn *)'} [-Wcast-function-type]
888 | ((u64 (*)(u64, u64, u64, u64, u64, const struct bpf_insn *)) \
| ^
kernel/bpf/core.c:1518:13: note: in expansion of macro '__bpf_call_base_args'
1518 | BPF_R0 = (__bpf_call_base_args + insn->imm)(BPF_R1, BPF_R2,
| ^~~~~~~~~~~~~~~~~~~~
kernel/bpf/core.c: At top level:
kernel/bpf/core.c:1704:6: warning: no previous prototype for
'bpf_patch_call_args' [-Wmissing-prototypes]
1704 | void bpf_patch_call_args(struct bpf_insn *insn, u32 stack_depth)
| ^~~~~~~~~~~~~~~~~~~
In file included from kernel/bpf/core.c:21:
kernel/bpf/core.c: In function 'bpf_patch_call_args':
include/linux/filter.h:888:3: warning: cast between incompatible function types from
'u64 (*)(u64, u64, u64, u64, u64)' {aka 'long long unsigned int (*)(long
long unsigned int, long long unsigned int, long long unsigned int, long long unsigned
int, long long unsigned int)'} to 'u64 (*)(u64, u64, u64, u64, u64, const
struct bpf_insn *)' {aka 'long long unsigned int (*)(long long unsigned int, long
long unsigned int, long long unsigned int, long long unsigned int, long long unsigned
int, const struct bpf_insn *)'} [-Wcast-function-type]
888 | ((u64 (*)(u64, u64, u64, u64, u64, const struct bpf_insn *)) \
| ^
kernel/bpf/core.c:1709:3: note: in expansion of macro '__bpf_call_base_args'
1709 | __bpf_call_base_args;
| ^~~~~~~~~~~~~~~~~~~~
kernel/bpf/core.c: At top level:
kernel/bpf/core.c:2102:6: warning: no previous prototype for
'__bpf_free_used_maps' [-Wmissing-prototypes]
2102 | void __bpf_free_used_maps(struct bpf_prog_aux *aux,
| ^~~~~~~~~~~~~~~~~~~~
> kernel/bpf/core.c:2122:6: warning: no previous prototype for
'__bpf_free_used_btfs' [-Wmissing-prototypes]
2122 | void
__bpf_free_used_btfs(struct bpf_prog_aux *aux,
| ^~~~~~~~~~~~~~~~~~~~
vim +/__bpf_free_used_btfs +2122 kernel/bpf/core.c
2121
2122 void __bpf_free_used_btfs(struct bpf_prog_aux *aux,
2123 struct btf_mod_pair *used_btfs, u32 len)
2124 {
2125 #ifdef CONFIG_BPF_SYSCALL
2126 struct btf_mod_pair *btf_mod;
2127 u32 i;
2128
2129 for (i = 0; i < len; i++) {
2130 btf_mod = &used_btfs[i];
2131 if (btf_mod->module)
2132 module_put(btf_mod->module);
2133 btf_put(btf_mod->btf);
2134 }
2135 #endif
2136 }
2137
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org