* [jkirsher-net-queue:master 4/4] kernel/bpf/verifier.c:6415:14: error: implicit declaration of function 'bpf_jit_supports_private_stack'; did you mean 'bpf_jit_supports_arena'?
@ 2025-07-09 1:18 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2025-07-09 1:18 UTC (permalink / raw)
To: Alexei Starovoitov; +Cc: oe-kbuild-all, Jeff Kirsher, Martin KaFai Lau
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tree: https://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net-queue.git master
head: db494b13c593e578fed58a6e41f4c9df619180d8
commit: db494b13c593e578fed58a6e41f4c9df619180d8 [4/4] bpf: Add support for certain atomics in bpf_arena to x86 JIT
:::::: branch date: 11 hours ago
:::::: commit date: 11 hours ago
config: csky-randconfig-001-20250708 (attached as .config)
compiler: csky-linux-gcc (GCC) 13.4.0
reproduce (this is a W=1 build): (attached as reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202507090038.pzxbP68P-lkp@intel.com/
All error/warnings (new ones prefixed by >>):
kernel/bpf/verifier.c: In function 'bpf_enable_priv_stack':
>> kernel/bpf/verifier.c:6415:14: error: implicit declaration of function 'bpf_jit_supports_private_stack'; did you mean 'bpf_jit_supports_arena'? [-Werror=implicit-function-declaration]
6415 | if (!bpf_jit_supports_private_stack())
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
| bpf_jit_supports_arena
kernel/bpf/verifier.c: In function 'check_atomic_load':
>> kernel/bpf/verifier.c:7747:15: error: implicit declaration of function 'check_load_mem' [-Werror=implicit-function-declaration]
7747 | err = check_load_mem(env, insn, true, false, false, "atomic_load");
| ^~~~~~~~~~~~~~
kernel/bpf/verifier.c: In function 'check_atomic_store':
>> kernel/bpf/verifier.c:7766:15: error: implicit declaration of function 'check_store_reg'; did you mean 'check_ptr_off_reg'? [-Werror=implicit-function-declaration]
7766 | err = check_store_reg(env, insn, true);
| ^~~~~~~~~~~~~~~
| check_ptr_off_reg
kernel/bpf/verifier.c: At top level:
>> kernel/bpf/verifier.c:7780:12: error: conflicting types for 'check_atomic'; have 'int(struct bpf_verifier_env *, struct bpf_insn *)'
7780 | static int check_atomic(struct bpf_verifier_env *env, struct bpf_insn *insn)
| ^~~~~~~~~~~~
kernel/bpf/verifier.c:7650:12: note: previous definition of 'check_atomic' with type 'int(struct bpf_verifier_env *, int, struct bpf_insn *)'
7650 | static int check_atomic(struct bpf_verifier_env *env, int insn_idx, struct bpf_insn *insn)
| ^~~~~~~~~~~~
kernel/bpf/verifier.c: In function 'check_atomic':
>> kernel/bpf/verifier.c:7793:24: error: implicit declaration of function 'check_atomic_rmw'; did you mean 'check_atomic'? [-Werror=implicit-function-declaration]
7793 | return check_atomic_rmw(env, insn);
| ^~~~~~~~~~~~~~~~
| check_atomic
kernel/bpf/verifier.c: In function 'convert_ctx_accesses':
>> kernel/bpf/verifier.c:20957:1: warning: label 'patch_insn_buf' defined but not used [-Wunused-label]
20957 | patch_insn_buf:
| ^~~~~~~~~~~~~~
>> kernel/bpf/verifier.c:20735:13: warning: unused variable 'epilogue_idx' [-Wunused-variable]
20735 | int epilogue_idx = 0;
| ^~~~~~~~~~~~
kernel/bpf/verifier.c: In function 'do_misc_fixups':
>> kernel/bpf/verifier.c:21667:46: error: implicit declaration of function 'bpf_arch_uaddress_limit' [-Werror=implicit-function-declaration]
21667 | u64 uaddress_limit = bpf_arch_uaddress_limit();
| ^~~~~~~~~~~~~~~~~~~~~~~
>> kernel/bpf/verifier.c:21765:47: error: implicit declaration of function 'bpf_jit_supports_timed_may_goto' [-Werror=implicit-function-declaration]
21765 | if (is_may_goto_insn(insn) && bpf_jit_supports_timed_may_goto()) {
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
kernel/bpf/verifier.c: At top level:
>> kernel/bpf/verifier.c:7650:12: warning: 'check_atomic' defined but not used [-Wunused-function]
7650 | static int check_atomic(struct bpf_verifier_env *env, int insn_idx, struct bpf_insn *insn)
| ^~~~~~~~~~~~
cc1: some warnings being treated as errors
vim +6415 kernel/bpf/verifier.c
969bf05eb3cedd Alexei Starovoitov 2016-05-05 6412
a76ab5731e32d5 Yonghong Song 2024-11-12 6413 static enum priv_stack_mode bpf_enable_priv_stack(struct bpf_prog *prog)
a76ab5731e32d5 Yonghong Song 2024-11-12 6414 {
a76ab5731e32d5 Yonghong Song 2024-11-12 @6415 if (!bpf_jit_supports_private_stack())
a76ab5731e32d5 Yonghong Song 2024-11-12 6416 return NO_PRIV_STACK;
a76ab5731e32d5 Yonghong Song 2024-11-12 6417
a76ab5731e32d5 Yonghong Song 2024-11-12 6418 /* bpf_prog_check_recur() checks all prog types that use bpf trampoline
a76ab5731e32d5 Yonghong Song 2024-11-12 6419 * while kprobe/tp/perf_event/raw_tp don't use trampoline hence checked
a76ab5731e32d5 Yonghong Song 2024-11-12 6420 * explicitly.
a76ab5731e32d5 Yonghong Song 2024-11-12 6421 */
a76ab5731e32d5 Yonghong Song 2024-11-12 6422 switch (prog->type) {
a76ab5731e32d5 Yonghong Song 2024-11-12 6423 case BPF_PROG_TYPE_KPROBE:
a76ab5731e32d5 Yonghong Song 2024-11-12 6424 case BPF_PROG_TYPE_TRACEPOINT:
a76ab5731e32d5 Yonghong Song 2024-11-12 6425 case BPF_PROG_TYPE_PERF_EVENT:
a76ab5731e32d5 Yonghong Song 2024-11-12 6426 case BPF_PROG_TYPE_RAW_TRACEPOINT:
a76ab5731e32d5 Yonghong Song 2024-11-12 6427 return PRIV_STACK_ADAPTIVE;
a76ab5731e32d5 Yonghong Song 2024-11-12 6428 case BPF_PROG_TYPE_TRACING:
a76ab5731e32d5 Yonghong Song 2024-11-12 6429 case BPF_PROG_TYPE_LSM:
a76ab5731e32d5 Yonghong Song 2024-11-12 6430 case BPF_PROG_TYPE_STRUCT_OPS:
5bd36da1e37e7a Yonghong Song 2024-11-12 6431 if (prog->aux->priv_stack_requested || bpf_prog_check_recur(prog))
a76ab5731e32d5 Yonghong Song 2024-11-12 6432 return PRIV_STACK_ADAPTIVE;
a76ab5731e32d5 Yonghong Song 2024-11-12 6433 fallthrough;
a76ab5731e32d5 Yonghong Song 2024-11-12 6434 default:
a76ab5731e32d5 Yonghong Song 2024-11-12 6435 break;
a76ab5731e32d5 Yonghong Song 2024-11-12 6436 }
a76ab5731e32d5 Yonghong Song 2024-11-12 6437
a76ab5731e32d5 Yonghong Song 2024-11-12 6438 return NO_PRIV_STACK;
a76ab5731e32d5 Yonghong Song 2024-11-12 6439 }
a76ab5731e32d5 Yonghong Song 2024-11-12 6440
:::::: The code at line 6415 was first introduced by commit
:::::: a76ab5731e32d50ff5b1ae97e9dc4b23f41c23f5 bpf: Find eligible subprogs for private stack support
:::::: TO: Yonghong Song <yonghong.song@linux.dev>
:::::: CC: Alexei Starovoitov <ast@kernel.org>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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reproduce (this is a W=1 build):
git clone https://github.com/intel/lkp-tests.git ~/lkp-tests
# https://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net-queue.git/commit/?id=db494b13c593e578fed58a6e41f4c9df619180d8
git remote add jkirsher-net-queue https://git.kernel.org/pub/scm/linux/kernel/git/jkirsher/net-queue.git
git fetch --no-tags jkirsher-net-queue master
git checkout db494b13c593e578fed58a6e41f4c9df619180d8
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-13.4.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=csky olddefconfig
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-13.4.0 ~/lkp-tests/kbuild/make.cross W=1 O=build_dir ARCH=csky SHELL=/bin/bash kernel/bpf/
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2025-07-09 1:18 [jkirsher-net-queue:master 4/4] kernel/bpf/verifier.c:6415:14: error: implicit declaration of function 'bpf_jit_supports_private_stack'; did you mean 'bpf_jit_supports_arena'? kernel test robot
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