The is_kernel[_text]() function check the address whether or not in kernel[_text] ranges, also they will check the address whether or not in gate area, so use better name. Cc: Alexei Starovoitov <ast@xxxxxxxxxx> Cc: Daniel Borkmann <daniel@xxxxxxxxxxxxx> Cc: Sami Tolvanen <samitolvanen@xxxxxxxxxx> Cc: Nathan Chancellor <nathan@xxxxxxxxxx> Cc: Arnd Bergmann <arnd@xxxxxxxx> Cc: bpf@xxxxxxxxxxxxxxx Signed-off-by: Kefeng Wang <wangkefeng.wang@xxxxxxxxxx> --- arch/x86/net/bpf_jit_comp.c | 2 +- include/linux/kallsyms.h | 8 ++++---- kernel/cfi.c | 2 +- 3 files changed, 6 insertions(+), 6 deletions(-) diff --git a/arch/x86/net/bpf_jit_comp.c b/arch/x86/net/bpf_jit_comp.c index 2a2e290fa5d8..b1ed4a0bfc86 100644 --- a/arch/x86/net/bpf_jit_comp.c +++ b/arch/x86/net/bpf_jit_comp.c @@ -376,7 +376,7 @@ static int __bpf_arch_text_poke(void *ip, enum bpf_text_poke_type t, int bpf_arch_text_poke(void *ip, enum bpf_text_poke_type t, void *old_addr, void *new_addr) { - if (!is_kernel_text((long)ip) && + if (!is_kernel_text_or_gate_area((long)ip) && !is_bpf_text_address((long)ip)) /* BPF poking in modules is not supported */ return -EINVAL; diff --git a/include/linux/kallsyms.h b/include/linux/kallsyms.h index 3e172fc65fae..814e1cc8eabf 100644 --- a/include/linux/kallsyms.h +++ b/include/linux/kallsyms.h @@ -23,14 +23,14 @@ struct cred; struct module; -static inline int is_kernel_text(unsigned long addr) +static inline int is_kernel_text_or_gate_area(unsigned long addr) { if ((addr >= (unsigned long)_stext && addr < (unsigned long)_etext)) return 1; return in_gate_area_no_mm(addr); } -static inline int is_kernel(unsigned long addr) +static inline int is_kernel_or_gate_area(unsigned long addr) { if (addr >= (unsigned long)_stext && addr < (unsigned long)_end) return 1; @@ -40,9 +40,9 @@ static inline int is_kernel(unsigned long addr) static inline int is_ksym_addr(unsigned long addr) { if (IS_ENABLED(CONFIG_KALLSYMS_ALL)) - return is_kernel(addr); + return is_kernel_or_gate_area(addr); - return is_kernel_text(addr) || is_kernel_inittext(addr); + return is_kernel_text_or_gate_area(addr) || is_kernel_inittext(addr); } static inline void *dereference_symbol_descriptor(void *ptr) diff --git a/kernel/cfi.c b/kernel/cfi.c index e17a56639766..e7d90eff4382 100644 --- a/kernel/cfi.c +++ b/kernel/cfi.c @@ -282,7 +282,7 @@ static inline cfi_check_fn find_check_fn(unsigned long ptr) { cfi_check_fn fn = NULL; - if (is_kernel_text(ptr)) + if (is_kernel_text_or_gate_area(ptr)) return __cfi_check; /* -- 2.26.2