[jolsa-perf:bpf/tracing_multi_4 12/35] arch/arm64/net/bpf_jit_comp.c:1714:60: warning: 'struct bpf_tramp_links' declared inside parameter list will not be visible outside of this definition or declaration

From: kernel test robot
Date: Fri Jul 29 2022 - 11:20:24 EST

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tree: https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git bpf/tracing_multi_4
head: a63fc296e166a76b3f7250a966df4651e3a846f1
commit: 7f6c8f779fa321cbbaf9cafeeb1cd0e2bdc4de36 [12/35] bpf: Replace bpf_tramp_link with bpf_tramp_prog
config: arm64-allyesconfig (https://download.01.org/0day-ci/archive/20220729/202207292335.Pl6WcNW4-lkp@xxxxxxxxx/config)
compiler: aarch64-linux-gcc (GCC) 12.1.0
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
# https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git/commit/?id=7f6c8f779fa321cbbaf9cafeeb1cd0e2bdc4de36
git remote add jolsa-perf https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git
git fetch --no-tags jolsa-perf bpf/tracing_multi_4
git checkout 7f6c8f779fa321cbbaf9cafeeb1cd0e2bdc4de36
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=arm64 SHELL=/bin/bash arch/arm64/net/

If you fix the issue, kindly add following tag where applicable
Reported-by: kernel test robot <lkp@xxxxxxxxx>

All warnings (new ones prefixed by >>):

>> arch/arm64/net/bpf_jit_comp.c:1714:60: warning: 'struct bpf_tramp_links' declared inside parameter list will not be visible outside of this definition or declaration
1714 | static void invoke_bpf_mod_ret(struct jit_ctx *ctx, struct bpf_tramp_links *tl,
| ^~~~~~~~~~~~~~~
arch/arm64/net/bpf_jit_comp.c: In function 'invoke_bpf_mod_ret':
arch/arm64/net/bpf_jit_comp.c:1724:27: error: invalid use of undefined type 'struct bpf_tramp_links'
1724 | for (i = 0; i < tl->nr_links; i++) {
| ^~
arch/arm64/net/bpf_jit_comp.c:1725:40: error: invalid use of undefined type 'struct bpf_tramp_links'
1725 | invoke_bpf_prog(ctx, tl->links[i], args_off, retval_off,
| ^~
arch/arm64/net/bpf_jit_comp.c: At top level:
arch/arm64/net/bpf_jit_comp.c:1771:38: warning: 'struct bpf_tramp_links' declared inside parameter list will not be visible outside of this definition or declaration
1771 | struct bpf_tramp_links *tlinks, void *orig_call,
| ^~~~~~~~~~~~~~~
arch/arm64/net/bpf_jit_comp.c: In function 'prepare_trampoline':
arch/arm64/net/bpf_jit_comp.c:1783:49: error: invalid use of undefined type 'struct bpf_tramp_links'
1783 | struct bpf_tramp_links *fentry = &tlinks[BPF_TRAMP_FENTRY];
| ^
arch/arm64/net/bpf_jit_comp.c:1784:48: error: invalid use of undefined type 'struct bpf_tramp_links'
1784 | struct bpf_tramp_links *fexit = &tlinks[BPF_TRAMP_FEXIT];
| ^
arch/arm64/net/bpf_jit_comp.c:1785:51: error: invalid use of undefined type 'struct bpf_tramp_links'
1785 | struct bpf_tramp_links *fmod_ret = &tlinks[BPF_TRAMP_MODIFY_RETURN];
| ^
arch/arm64/net/bpf_jit_comp.c:1889:31: error: invalid use of undefined type 'struct bpf_tramp_links'
1889 | for (i = 0; i < fentry->nr_links; i++)
| ^~
arch/arm64/net/bpf_jit_comp.c:1890:44: error: invalid use of undefined type 'struct bpf_tramp_links'
1890 | invoke_bpf_prog(ctx, fentry->links[i], args_off,
| ^~
arch/arm64/net/bpf_jit_comp.c:1894:21: error: invalid use of undefined type 'struct bpf_tramp_links'
1894 | if (fmod_ret->nr_links) {
| ^~
arch/arm64/net/bpf_jit_comp.c:1895:44: error: invalid use of undefined type 'struct bpf_tramp_links'
1895 | branches = kcalloc(fmod_ret->nr_links, sizeof(u32 *),
| ^~
arch/arm64/net/bpf_jit_comp.c:1900:41: error: passing argument 2 of 'invoke_bpf_mod_ret' from incompatible pointer type [-Werror=incompatible-pointer-types]
1900 | invoke_bpf_mod_ret(ctx, fmod_ret, args_off, retval_off,
| ^~~~~~~~
| |
| struct bpf_tramp_links *
arch/arm64/net/bpf_jit_comp.c:1714:77: note: expected 'struct bpf_tramp_links *' but argument is of type 'struct bpf_tramp_links *'
1714 | static void invoke_bpf_mod_ret(struct jit_ctx *ctx, struct bpf_tramp_links *tl,
| ~~~~~~~~~~~~~~~~~~~~~~~~^~
arch/arm64/net/bpf_jit_comp.c:1917:33: error: invalid use of undefined type 'struct bpf_tramp_links'
1917 | for (i = 0; i < fmod_ret->nr_links && ctx->image != NULL; i++) {
| ^~
arch/arm64/net/bpf_jit_comp.c:1922:30: error: invalid use of undefined type 'struct bpf_tramp_links'
1922 | for (i = 0; i < fexit->nr_links; i++)
| ^~
arch/arm64/net/bpf_jit_comp.c:1923:43: error: invalid use of undefined type 'struct bpf_tramp_links'
1923 | invoke_bpf_prog(ctx, fexit->links[i], args_off, retval_off,
| ^~
arch/arm64/net/bpf_jit_comp.c: At top level:
arch/arm64/net/bpf_jit_comp.c:1970:51: warning: 'struct bpf_tramp_links' declared inside parameter list will not be visible outside of this definition or declaration
1970 | u32 flags, struct bpf_tramp_links *tlinks,
| ^~~~~~~~~~~~~~~
arch/arm64/net/bpf_jit_comp.c:1968:5: error: conflicting types for 'arch_prepare_bpf_trampoline'; have 'int(struct bpf_tramp_image *, void *, void *, const struct btf_func_model *, u32, struct bpf_tramp_links *, void *)' {aka 'int(struct bpf_tramp_image *, void *, void *, const struct btf_func_model *, unsigned int, struct bpf_tramp_links *, void *)'}
1968 | int arch_prepare_bpf_trampoline(struct bpf_tramp_image *im, void *image,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from arch/arm64/net/bpf_jit_comp.c:11:
include/linux/bpf.h:803:5: note: previous declaration of 'arch_prepare_bpf_trampoline' with type 'int(struct bpf_tramp_image *, void *, void *, const struct btf_func_model *, u32, struct bpf_tramp_progs *, void *)' {aka 'int(struct bpf_tramp_image *, void *, void *, const struct btf_func_model *, unsigned int, struct bpf_tramp_progs *, void *)'}
803 | int arch_prepare_bpf_trampoline(struct bpf_tramp_image *tr, void *image, void *image_end,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~
arch/arm64/net/bpf_jit_comp.c: In function 'arch_prepare_bpf_trampoline':
arch/arm64/net/bpf_jit_comp.c:1985:44: error: passing argument 3 of 'prepare_trampoline' from incompatible pointer type [-Werror=incompatible-pointer-types]
1985 | ret = prepare_trampoline(&ctx, im, tlinks, orig_call, nargs, flags);
| ^~~~~~
| |
| struct bpf_tramp_links *
arch/arm64/net/bpf_jit_comp.c:1771:55: note: expected 'struct bpf_tramp_links *' but argument is of type 'struct bpf_tramp_links *'
1771 | struct bpf_tramp_links *tlinks, void *orig_call,
| ~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
arch/arm64/net/bpf_jit_comp.c:1996:44: error: passing argument 3 of 'prepare_trampoline' from incompatible pointer type [-Werror=incompatible-pointer-types]
1996 | ret = prepare_trampoline(&ctx, im, tlinks, orig_call, nargs, flags);
| ^~~~~~
| |
| struct bpf_tramp_links *
arch/arm64/net/bpf_jit_comp.c:1771:55: note: expected 'struct bpf_tramp_links *' but argument is of type 'struct bpf_tramp_links *'
1771 | struct bpf_tramp_links *tlinks, void *orig_call,
| ~~~~~~~~~~~~~~~~~~~~~~~~^~~~~~
cc1: some warnings being treated as errors

vim +1714 arch/arm64/net/bpf_jit_comp.c

efc9909fdce00a Xu Kuohai 2022-07-11 1713
efc9909fdce00a Xu Kuohai 2022-07-11 @1714 static void invoke_bpf_mod_ret(struct jit_ctx *ctx, struct bpf_tramp_links *tl,
efc9909fdce00a Xu Kuohai 2022-07-11 1715 int args_off, int retval_off, int run_ctx_off,
efc9909fdce00a Xu Kuohai 2022-07-11 1716 u32 **branches)
efc9909fdce00a Xu Kuohai 2022-07-11 1717 {
efc9909fdce00a Xu Kuohai 2022-07-11 1718 int i;
efc9909fdce00a Xu Kuohai 2022-07-11 1719
efc9909fdce00a Xu Kuohai 2022-07-11 1720 /* The first fmod_ret program will receive a garbage return value.
efc9909fdce00a Xu Kuohai 2022-07-11 1721 * Set this to 0 to avoid confusing the program.
efc9909fdce00a Xu Kuohai 2022-07-11 1722 */
efc9909fdce00a Xu Kuohai 2022-07-11 1723 emit(A64_STR64I(A64_ZR, A64_SP, retval_off), ctx);
efc9909fdce00a Xu Kuohai 2022-07-11 1724 for (i = 0; i < tl->nr_links; i++) {
efc9909fdce00a Xu Kuohai 2022-07-11 1725 invoke_bpf_prog(ctx, tl->links[i], args_off, retval_off,
efc9909fdce00a Xu Kuohai 2022-07-11 1726 run_ctx_off, true);
efc9909fdce00a Xu Kuohai 2022-07-11 1727 /* if (*(u64 *)(sp + retval_off) != 0)
efc9909fdce00a Xu Kuohai 2022-07-11 1728 * goto do_fexit;
efc9909fdce00a Xu Kuohai 2022-07-11 1729 */
efc9909fdce00a Xu Kuohai 2022-07-11 1730 emit(A64_LDR64I(A64_R(10), A64_SP, retval_off), ctx);
efc9909fdce00a Xu Kuohai 2022-07-11 1731 /* Save the location of branch, and generate a nop.
efc9909fdce00a Xu Kuohai 2022-07-11 1732 * This nop will be replaced with a cbnz later.
efc9909fdce00a Xu Kuohai 2022-07-11 1733 */
efc9909fdce00a Xu Kuohai 2022-07-11 1734 branches[i] = ctx->image + ctx->idx;
efc9909fdce00a Xu Kuohai 2022-07-11 1735 emit(A64_NOP, ctx);
efc9909fdce00a Xu Kuohai 2022-07-11 1736 }
efc9909fdce00a Xu Kuohai 2022-07-11 1737 }
efc9909fdce00a Xu Kuohai 2022-07-11 1738

:::::: The code at line 1714 was first introduced by commit
:::::: efc9909fdce00a827a37609628223cd45bf95d0b bpf, arm64: Add bpf trampoline for arm64

:::::: TO: Xu Kuohai <xukuohai@xxxxxxxxxx>
:::::: CC: Daniel Borkmann <daniel@xxxxxxxxxxxxx>

--
0-DAY CI Kernel Test Service
https://01.org/lkp

Next message: Balsam CHIHI: "Re: [PATCH v8 1/6] thermal: mediatek: Relocate driver to mediatek folder"
Previous message: Arun Ramadoss: "[Patch RFC net-next 4/4] net: dsa: microchip: use private pvid for bridge_vlan_unwaware"
Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]