From: kernel test robot <lkp@intel.com>
To: Tobias Klauser <tklauser@distanz.ch>,
Alexei Starovoitov <ast@kernel.org>,
Daniel Borkmann <daniel@iogearbox.net>,
Wang YanQing <udknight@gmail.com>
Cc: kbuild-all@lists.01.org, clang-built-linux@googlegroups.com,
bpf@vger.kernel.org, netdev@vger.kernel.org, x86@kernel.org
Subject: Re: [PATCH bpf-next 1/2] bpf, x86: Factor common x86 JIT code
Date: Tue, 30 Jun 2020 13:20:45 +0800 [thread overview]
Message-ID: <202006301334.d5Nn3sZp%lkp@intel.com> (raw)
In-Reply-To: <20200629093336.20963-2-tklauser@distanz.ch>
[-- Attachment #1: Type: text/plain, Size: 23130 bytes --]
Hi Tobias,
I love your patch! Perhaps something to improve:
[auto build test WARNING on bpf-next/master]
url: https://github.com/0day-ci/linux/commits/Tobias-Klauser/bpf-x86-Factor-common-x86-JIT-code/20200630-045932
base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master
config: x86_64-randconfig-a002-20200630 (attached as .config)
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project cf1d04484344be52ada8178e41d18fd15a9b880c)
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 x86_64 cross compiling tool for clang build
# apt-get install binutils-x86-64-linux-gnu
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All warnings (new ones prefixed by >>):
arch/x86/purgatory/purgatory.c:57:6: warning: no previous prototype for function 'warn' [-Wmissing-prototypes]
void warn(const char *msg) {}
^
arch/x86/purgatory/purgatory.c:57:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void warn(const char *msg) {}
^
static
1 warning generated.
>> arch/x86/net/bpf_jit_comp64.c:1713:5: warning: no previous prototype for function 'arch_prepare_bpf_dispatcher' [-Wmissing-prototypes]
int arch_prepare_bpf_dispatcher(void *image, s64 *funcs, int num_funcs)
^
arch/x86/net/bpf_jit_comp64.c:1713:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int arch_prepare_bpf_dispatcher(void *image, s64 *funcs, int num_funcs)
^
static
arch/x86/mm/init.c:81:6: warning: no previous prototype for function 'x86_has_pat_wp' [-Wmissing-prototypes]
bool x86_has_pat_wp(void)
^
arch/x86/mm/init.c:81:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
bool x86_has_pat_wp(void)
^
static
arch/x86/mm/init.c:86:22: warning: no previous prototype for function 'pgprot2cachemode' [-Wmissing-prototypes]
enum page_cache_mode pgprot2cachemode(pgprot_t pgprot)
^
arch/x86/mm/init.c:86:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
enum page_cache_mode pgprot2cachemode(pgprot_t pgprot)
^
static
In file included from arch/x86/boot/compressed/string.c:11:
arch/x86/boot/compressed/../string.c:43:5: warning: no previous prototype for function 'bcmp' [-Wmissing-prototypes]
int bcmp(const void *s1, const void *s2, size_t len)
^
arch/x86/boot/compressed/../string.c:43:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int bcmp(const void *s1, const void *s2, size_t len)
^
static
arch/x86/boot/compressed/../string.c:145:6: warning: no previous prototype for function 'simple_strtol' [-Wmissing-prototypes]
long simple_strtol(const char *cp, char **endp, unsigned int base)
^
arch/x86/boot/compressed/../string.c:145:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
long simple_strtol(const char *cp, char **endp, unsigned int base)
^
static
arch/x86/boot/compressed/string.c:53:7: warning: no previous prototype for function 'memmove' [-Wmissing-prototypes]
void *memmove(void *dest, const void *src, size_t n)
^
arch/x86/boot/compressed/string.c:53:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void *memmove(void *dest, const void *src, size_t n)
^
static
3 warnings generated.
2 warnings generated.
1 warning generated.
arch/x86/entry/common.c:274:24: warning: no previous prototype for function 'prepare_exit_to_usermode' [-Wmissing-prototypes]
__visible noinstr void prepare_exit_to_usermode(struct pt_regs *regs)
^
arch/x86/entry/common.c:274:19: note: declare 'static' if the function is not intended to be used outside of this translation unit
__visible noinstr void prepare_exit_to_usermode(struct pt_regs *regs)
^
static
arch/x86/entry/common.c:336:24: warning: no previous prototype for function 'syscall_return_slowpath' [-Wmissing-prototypes]
__visible noinstr void syscall_return_slowpath(struct pt_regs *regs)
^
arch/x86/entry/common.c:336:19: note: declare 'static' if the function is not intended to be used outside of this translation unit
__visible noinstr void syscall_return_slowpath(struct pt_regs *regs)
^
static
arch/x86/entry/vdso/vgetcpu.c:14:1: warning: no previous prototype for function '__vdso_getcpu' [-Wmissing-prototypes]
__vdso_getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *unused)
^
arch/x86/entry/vdso/vgetcpu.c:13:9: note: declare 'static' if the function is not intended to be used outside of this translation unit
notrace long
^
static
1 warning generated.
2 warnings generated.
arch/x86/kernel/i8259.c:237: warning: Function parameter or member 'trigger' not described in 'restore_ELCR'
arch/x86/mm/ioremap.c:737:17: warning: no previous prototype for function 'early_memremap_pgprot_adjust' [-Wmissing-prototypes]
pgprot_t __init early_memremap_pgprot_adjust(resource_size_t phys_addr,
^
arch/x86/mm/ioremap.c:737:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
pgprot_t __init early_memremap_pgprot_adjust(resource_size_t phys_addr,
^
static
arch/x86/mm/extable.c:26:16: warning: no previous prototype for function 'ex_handler_default' [-Wmissing-prototypes]
__visible bool ex_handler_default(const struct exception_table_entry *fixup,
^
arch/x86/mm/extable.c:26:11: note: declare 'static' if the function is not intended to be used outside of this translation unit
__visible bool ex_handler_default(const struct exception_table_entry *fixup,
^
static
arch/x86/mm/extable.c:36:16: warning: no previous prototype for function 'ex_handler_fault' [-Wmissing-prototypes]
__visible bool ex_handler_fault(const struct exception_table_entry *fixup,
^
arch/x86/mm/extable.c:36:11: note: declare 'static' if the function is not intended to be used outside of this translation unit
__visible bool ex_handler_fault(const struct exception_table_entry *fixup,
^
static
arch/x86/mm/extable.c:57:16: warning: no previous prototype for function 'ex_handler_fprestore' [-Wmissing-prototypes]
__visible bool ex_handler_fprestore(const struct exception_table_entry *fixup,
^
arch/x86/mm/extable.c:57:11: note: declare 'static' if the function is not intended to be used outside of this translation unit
__visible bool ex_handler_fprestore(const struct exception_table_entry *fixup,
^
static
arch/x86/mm/extable.c:72:16: warning: no previous prototype for function 'ex_handler_uaccess' [-Wmissing-prototypes]
__visible bool ex_handler_uaccess(const struct exception_table_entry *fixup,
^
--
arch/x86/purgatory/purgatory.c:57:6: warning: no previous prototype for function 'warn' [-Wmissing-prototypes]
void warn(const char *msg) {}
^
arch/x86/purgatory/purgatory.c:57:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void warn(const char *msg) {}
^
static
1 warning generated.
>> arch/x86/net/bpf_jit_comp64.c:1713:5: warning: no previous prototype for function 'arch_prepare_bpf_dispatcher' [-Wmissing-prototypes]
int arch_prepare_bpf_dispatcher(void *image, s64 *funcs, int num_funcs)
^
arch/x86/net/bpf_jit_comp64.c:1713:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int arch_prepare_bpf_dispatcher(void *image, s64 *funcs, int num_funcs)
^
static
arch/x86/mm/init.c:81:6: warning: no previous prototype for function 'x86_has_pat_wp' [-Wmissing-prototypes]
bool x86_has_pat_wp(void)
^
arch/x86/mm/init.c:81:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
bool x86_has_pat_wp(void)
^
static
arch/x86/mm/init.c:86:22: warning: no previous prototype for function 'pgprot2cachemode' [-Wmissing-prototypes]
enum page_cache_mode pgprot2cachemode(pgprot_t pgprot)
^
arch/x86/mm/init.c:86:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
enum page_cache_mode pgprot2cachemode(pgprot_t pgprot)
^
static
In file included from arch/x86/boot/compressed/string.c:11:
arch/x86/boot/compressed/../string.c:43:5: warning: no previous prototype for function 'bcmp' [-Wmissing-prototypes]
int bcmp(const void *s1, const void *s2, size_t len)
^
arch/x86/boot/compressed/../string.c:43:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int bcmp(const void *s1, const void *s2, size_t len)
^
static
arch/x86/boot/compressed/../string.c:145:6: warning: no previous prototype for function 'simple_strtol' [-Wmissing-prototypes]
long simple_strtol(const char *cp, char **endp, unsigned int base)
^
arch/x86/boot/compressed/../string.c:145:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
long simple_strtol(const char *cp, char **endp, unsigned int base)
^
static
arch/x86/boot/compressed/string.c:53:7: warning: no previous prototype for function 'memmove' [-Wmissing-prototypes]
void *memmove(void *dest, const void *src, size_t n)
^
arch/x86/boot/compressed/string.c:53:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void *memmove(void *dest, const void *src, size_t n)
^
static
3 warnings generated.
2 warnings generated.
1 warning generated.
arch/x86/entry/common.c:274:24: warning: no previous prototype for function 'prepare_exit_to_usermode' [-Wmissing-prototypes]
__visible noinstr void prepare_exit_to_usermode(struct pt_regs *regs)
^
arch/x86/entry/common.c:274:19: note: declare 'static' if the function is not intended to be used outside of this translation unit
__visible noinstr void prepare_exit_to_usermode(struct pt_regs *regs)
^
static
arch/x86/entry/common.c:336:24: warning: no previous prototype for function 'syscall_return_slowpath' [-Wmissing-prototypes]
__visible noinstr void syscall_return_slowpath(struct pt_regs *regs)
^
arch/x86/entry/common.c:336:19: note: declare 'static' if the function is not intended to be used outside of this translation unit
__visible noinstr void syscall_return_slowpath(struct pt_regs *regs)
^
static
arch/x86/entry/vdso/vgetcpu.c:14:1: warning: no previous prototype for function '__vdso_getcpu' [-Wmissing-prototypes]
__vdso_getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *unused)
^
arch/x86/entry/vdso/vgetcpu.c:13:9: note: declare 'static' if the function is not intended to be used outside of this translation unit
notrace long
^
static
1 warning generated.
2 warnings generated.
arch/x86/kernel/i8259.c:237: warning: Function parameter or member 'trigger' not described in 'restore_ELCR'
arch/x86/mm/ioremap.c:737:17: warning: no previous prototype for function 'early_memremap_pgprot_adjust' [-Wmissing-prototypes]
pgprot_t __init early_memremap_pgprot_adjust(resource_size_t phys_addr,
^
arch/x86/mm/ioremap.c:737:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
pgprot_t __init early_memremap_pgprot_adjust(resource_size_t phys_addr,
^
static
arch/x86/mm/extable.c:26:16: warning: no previous prototype for function 'ex_handler_default' [-Wmissing-prototypes]
__visible bool ex_handler_default(const struct exception_table_entry *fixup,
^
arch/x86/mm/extable.c:26:11: note: declare 'static' if the function is not intended to be used outside of this translation unit
__visible bool ex_handler_default(const struct exception_table_entry *fixup,
^
static
arch/x86/mm/extable.c:36:16: warning: no previous prototype for function 'ex_handler_fault' [-Wmissing-prototypes]
__visible bool ex_handler_fault(const struct exception_table_entry *fixup,
^
arch/x86/mm/extable.c:36:11: note: declare 'static' if the function is not intended to be used outside of this translation unit
__visible bool ex_handler_fault(const struct exception_table_entry *fixup,
^
static
arch/x86/mm/extable.c:57:16: warning: no previous prototype for function 'ex_handler_fprestore' [-Wmissing-prototypes]
__visible bool ex_handler_fprestore(const struct exception_table_entry *fixup,
^
arch/x86/mm/extable.c:57:11: note: declare 'static' if the function is not intended to be used outside of this translation unit
__visible bool ex_handler_fprestore(const struct exception_table_entry *fixup,
^
static
arch/x86/mm/extable.c:72:16: warning: no previous prototype for function 'ex_handler_uaccess' [-Wmissing-prototypes]
__visible bool ex_handler_uaccess(const struct exception_table_entry *fixup,
^
--
>> arch/x86/net/bpf_jit_comp64.c:1713:5: warning: no previous prototype for function 'arch_prepare_bpf_dispatcher' [-Wmissing-prototypes]
int arch_prepare_bpf_dispatcher(void *image, s64 *funcs, int num_funcs)
^
arch/x86/net/bpf_jit_comp64.c:1713:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int arch_prepare_bpf_dispatcher(void *image, s64 *funcs, int num_funcs)
^
static
1 warning generated.
--
arch/x86/purgatory/purgatory.c:57:6: warning: no previous prototype for function 'warn' [-Wmissing-prototypes]
void warn(const char *msg) {}
^
arch/x86/purgatory/purgatory.c:57:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void warn(const char *msg) {}
^
static
1 warning generated.
arch/x86/mm/init.c:81:6: warning: no previous prototype for function 'x86_has_pat_wp' [-Wmissing-prototypes]
bool x86_has_pat_wp(void)
^
arch/x86/mm/init.c:81:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
bool x86_has_pat_wp(void)
^
static
arch/x86/mm/init.c:86:22: warning: no previous prototype for function 'pgprot2cachemode' [-Wmissing-prototypes]
enum page_cache_mode pgprot2cachemode(pgprot_t pgprot)
^
arch/x86/mm/init.c:86:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
enum page_cache_mode pgprot2cachemode(pgprot_t pgprot)
^
static
>> arch/x86/net/bpf_jit_comp64.c:1713:5: warning: no previous prototype for function 'arch_prepare_bpf_dispatcher' [-Wmissing-prototypes]
int arch_prepare_bpf_dispatcher(void *image, s64 *funcs, int num_funcs)
^
arch/x86/net/bpf_jit_comp64.c:1713:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int arch_prepare_bpf_dispatcher(void *image, s64 *funcs, int num_funcs)
^
static
arch/x86/entry/common.c:274:24: warning: no previous prototype for function 'prepare_exit_to_usermode' [-Wmissing-prototypes]
__visible noinstr void prepare_exit_to_usermode(struct pt_regs *regs)
^
arch/x86/entry/common.c:274:19: note: declare 'static' if the function is not intended to be used outside of this translation unit
__visible noinstr void prepare_exit_to_usermode(struct pt_regs *regs)
^
static
arch/x86/entry/common.c:336:24: warning: no previous prototype for function 'syscall_return_slowpath' [-Wmissing-prototypes]
__visible noinstr void syscall_return_slowpath(struct pt_regs *regs)
^
arch/x86/entry/common.c:336:19: note: declare 'static' if the function is not intended to be used outside of this translation unit
__visible noinstr void syscall_return_slowpath(struct pt_regs *regs)
^
static
2 warnings generated.
2 warnings generated.
In file included from arch/x86/boot/compressed/string.c:11:
arch/x86/boot/compressed/../string.c:43:5: warning: no previous prototype for function 'bcmp' [-Wmissing-prototypes]
int bcmp(const void *s1, const void *s2, size_t len)
^
arch/x86/boot/compressed/../string.c:43:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
int bcmp(const void *s1, const void *s2, size_t len)
^
static
arch/x86/boot/compressed/../string.c:145:6: warning: no previous prototype for function 'simple_strtol' [-Wmissing-prototypes]
long simple_strtol(const char *cp, char **endp, unsigned int base)
^
arch/x86/boot/compressed/../string.c:145:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
long simple_strtol(const char *cp, char **endp, unsigned int base)
^
static
arch/x86/boot/compressed/string.c:53:7: warning: no previous prototype for function 'memmove' [-Wmissing-prototypes]
void *memmove(void *dest, const void *src, size_t n)
^
arch/x86/boot/compressed/string.c:53:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
void *memmove(void *dest, const void *src, size_t n)
^
static
3 warnings generated.
arch/x86/entry/vdso/vgetcpu.c:14:1: warning: no previous prototype for function '__vdso_getcpu' [-Wmissing-prototypes]
__vdso_getcpu(unsigned *cpu, unsigned *node, struct getcpu_cache *unused)
^
arch/x86/entry/vdso/vgetcpu.c:13:9: note: declare 'static' if the function is not intended to be used outside of this translation unit
notrace long
^
static
1 warning generated.
1 warning generated.
arch/x86/kernel/i8259.c:237: warning: Function parameter or member 'trigger' not described in 'restore_ELCR'
arch/x86/mm/ioremap.c:737:17: warning: no previous prototype for function 'early_memremap_pgprot_adjust' [-Wmissing-prototypes]
pgprot_t __init early_memremap_pgprot_adjust(resource_size_t phys_addr,
^
arch/x86/mm/ioremap.c:737:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
pgprot_t __init early_memremap_pgprot_adjust(resource_size_t phys_addr,
^
static
1 warning generated.
arch/x86/mm/extable.c:26:16: warning: no previous prototype for function 'ex_handler_default' [-Wmissing-prototypes]
__visible bool ex_handler_default(const struct exception_table_entry *fixup,
^
arch/x86/mm/extable.c:26:11: note: declare 'static' if the function is not intended to be used outside of this translation unit
__visible bool ex_handler_default(const struct exception_table_entry *fixup,
^
static
arch/x86/mm/extable.c:36:16: warning: no previous prototype for function 'ex_handler_fault' [-Wmissing-prototypes]
__visible bool ex_handler_fault(const struct exception_table_entry *fixup,
^
arch/x86/mm/extable.c:36:11: note: declare 'static' if the function is not intended to be used outside of this translation unit
__visible bool ex_handler_fault(const struct exception_table_entry *fixup,
^
static
arch/x86/mm/extable.c:57:16: warning: no previous prototype for function 'ex_handler_fprestore' [-Wmissing-prototypes]
__visible bool ex_handler_fprestore(const struct exception_table_entry *fixup,
^
arch/x86/mm/extable.c:57:11: note: declare 'static' if the function is not intended to be used outside of this translation unit
__visible bool ex_handler_fprestore(const struct exception_table_entry *fixup,
^
static
arch/x86/mm/extable.c:72:16: warning: no previous prototype for function 'ex_handler_uaccess' [-Wmissing-prototypes]
__visible bool ex_handler_uaccess(const struct exception_table_entry *fixup,
^
arch/x86/mm/extable.c:72:11: note: declare 'static' if the function is not intended to be used outside of this translation unit
__visible bool ex_handler_uaccess(const struct exception_table_entry *fixup,
^
static
arch/x86/mm/extable.c:83:16: warning: no previous prototype for function 'ex_handler_rdmsr_unsafe' [-Wmissing-prototypes]
__visible bool ex_handler_rdmsr_unsafe(const struct exception_table_entry *fixup,
^
arch/x86/mm/extable.c:83:11: note: declare 'static' if the function is not intended to be used outside of this translation unit
__visible bool ex_handler_rdmsr_unsafe(const struct exception_table_entry *fixup,
^
static
arch/x86/mm/extable.c:100:16: warning: no previous prototype for function 'ex_handler_wrmsr_unsafe' [-Wmissing-prototypes]
__visible bool ex_handler_wrmsr_unsafe(const struct exception_table_entry *fixup,
vim +/arch_prepare_bpf_dispatcher +1713 arch/x86/net/bpf_jit_comp64.c
75ccbef6369e94 arch/x86/net/bpf_jit_comp.c Björn Töpel 2019-12-13 1712
75ccbef6369e94 arch/x86/net/bpf_jit_comp.c Björn Töpel 2019-12-13 @1713 int arch_prepare_bpf_dispatcher(void *image, s64 *funcs, int num_funcs)
75ccbef6369e94 arch/x86/net/bpf_jit_comp.c Björn Töpel 2019-12-13 1714 {
75ccbef6369e94 arch/x86/net/bpf_jit_comp.c Björn Töpel 2019-12-13 1715 u8 *prog = image;
75ccbef6369e94 arch/x86/net/bpf_jit_comp.c Björn Töpel 2019-12-13 1716
75ccbef6369e94 arch/x86/net/bpf_jit_comp.c Björn Töpel 2019-12-13 1717 sort(funcs, num_funcs, sizeof(funcs[0]), cmp_ips, NULL);
75ccbef6369e94 arch/x86/net/bpf_jit_comp.c Björn Töpel 2019-12-13 1718 return emit_bpf_dispatcher(&prog, 0, num_funcs - 1, funcs);
75ccbef6369e94 arch/x86/net/bpf_jit_comp.c Björn Töpel 2019-12-13 1719 }
75ccbef6369e94 arch/x86/net/bpf_jit_comp.c Björn Töpel 2019-12-13 1720
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
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next prev parent reply other threads:[~2020-06-30 6:11 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-06-29 9:33 [PATCH bpf-next 0/2] Factor common x86 JIT code Tobias Klauser
2020-06-29 9:33 ` [PATCH bpf-next 1/2] bpf, x86: " Tobias Klauser
2020-06-29 17:48 ` Alexei Starovoitov
2020-06-30 5:20 ` kernel test robot [this message]
2020-07-11 3:13 ` kernel test robot
2020-06-29 9:33 ` [PATCH bpf-next 2/2] bpf, x86: Factor out get_cond_jmp_opcode and use for 64bit x86 Tobias Klauser
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