diff options
| author | Masami Hiramatsu <mhiramat@kernel.org> | 2019-02-12 16:43:51 +0100 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2019-03-19 13:43:09 +0100 |
| commit | b5586163de1ce90317cd4037f69b14105be9f656 (patch) | |
| tree | 6da613aaa8218efaafd775fb358c99b77cc271cf /arch/arm64 | |
| parent | arm64: kprobes: Move extable address check into arch_prepare_kprobe() (diff) | |
| download | linux-b5586163de1ce90317cd4037f69b14105be9f656.tar.xz linux-b5586163de1ce90317cd4037f69b14105be9f656.zip | |
arm64: kprobes: Remove unneeded RODATA check
Remove unneeded RODATA check from arch_prepare_kprobe().
Since check_kprobe_address_safe() already ensured that
the probe address is in kernel text, we don't need to
check whether the address in RODATA or not. That must
be always false.
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64')
| -rw-r--r-- | arch/arm64/kernel/probes/kprobes.c | 6 |
1 files changed, 0 insertions, 6 deletions
diff --git a/arch/arm64/kernel/probes/kprobes.c b/arch/arm64/kernel/probes/kprobes.c index 16bc3b2e9351..b168873147f5 100644 --- a/arch/arm64/kernel/probes/kprobes.c +++ b/arch/arm64/kernel/probes/kprobes.c @@ -91,8 +91,6 @@ static void __kprobes arch_simulate_insn(struct kprobe *p, struct pt_regs *regs) int __kprobes arch_prepare_kprobe(struct kprobe *p) { unsigned long probe_addr = (unsigned long)p->addr; - extern char __start_rodata[]; - extern char __end_rodata[]; if (probe_addr & 0x3) return -EINVAL; @@ -106,10 +104,6 @@ int __kprobes arch_prepare_kprobe(struct kprobe *p) if (search_exception_tables(probe_addr)) return -EINVAL; - if (probe_addr >= (unsigned long) __start_rodata && - probe_addr <= (unsigned long) __end_rodata) - return -EINVAL; - /* decode instruction */ switch (arm_kprobe_decode_insn(p->addr, &p->ainsn)) { case INSN_REJECTED: /* insn not supported */ |