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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2017-07-20 21:34:47 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-07-20 21:34:47 +0300 |
| commit | 54a7d50b9205b5064628c1d10de6531d2d9fbc90 (patch) | |
| tree | a51908ed455f210d1752a732c3af95c936bb6f63 /arch/x86/include/asm | |
| parent | 791f2df39b8248490ab41022939debaa82b96028 (diff) | |
| download | linux-54a7d50b9205b5064628c1d10de6531d2d9fbc90.tar.xz | |
x86: mark kprobe templates as character arrays, not single characters
They really are, and the "take the address of a single character" makes
the string fortification code unhappy (it believes that you can now only
acccess one byte, rather than a byte range, and then raises errors for
the memory copies going on in there).
We could now remove a few 'addressof' operators (since arrays naturally
degrade to pointers), but this is the minimal patch that just changes
the C prototypes of those template arrays (the templates themselves are
defined in inline asm).
Reported-by: kernel test robot <xiaolong.ye@intel.com>
Acked-and-tested-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Daniel Micay <danielmicay@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/x86/include/asm')
| -rw-r--r-- | arch/x86/include/asm/kprobes.h | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/x86/include/asm/kprobes.h b/arch/x86/include/asm/kprobes.h index 34b984c60790..6cf65437b5e5 100644 --- a/arch/x86/include/asm/kprobes.h +++ b/arch/x86/include/asm/kprobes.h @@ -52,10 +52,10 @@ typedef u8 kprobe_opcode_t; #define flush_insn_slot(p) do { } while (0) /* optinsn template addresses */ -extern __visible kprobe_opcode_t optprobe_template_entry; -extern __visible kprobe_opcode_t optprobe_template_val; -extern __visible kprobe_opcode_t optprobe_template_call; -extern __visible kprobe_opcode_t optprobe_template_end; +extern __visible kprobe_opcode_t optprobe_template_entry[]; +extern __visible kprobe_opcode_t optprobe_template_val[]; +extern __visible kprobe_opcode_t optprobe_template_call[]; +extern __visible kprobe_opcode_t optprobe_template_end[]; #define MAX_OPTIMIZED_LENGTH (MAX_INSN_SIZE + RELATIVE_ADDR_SIZE) #define MAX_OPTINSN_SIZE \ (((unsigned long)&optprobe_template_end - \ |