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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>
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1 changed files with 4 additions and 4 deletions
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@ -52,10 +52,10 @@ typedef u8 kprobe_opcode_t;
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#define flush_insn_slot(p) do { } while (0)
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#define flush_insn_slot(p) do { } while (0)
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/* optinsn template addresses */
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/* optinsn template addresses */
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extern __visible kprobe_opcode_t optprobe_template_entry;
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extern __visible kprobe_opcode_t optprobe_template_entry[];
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extern __visible kprobe_opcode_t optprobe_template_val;
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extern __visible kprobe_opcode_t optprobe_template_val[];
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extern __visible kprobe_opcode_t optprobe_template_call;
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extern __visible kprobe_opcode_t optprobe_template_call[];
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extern __visible kprobe_opcode_t optprobe_template_end;
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extern __visible kprobe_opcode_t optprobe_template_end[];
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#define MAX_OPTIMIZED_LENGTH (MAX_INSN_SIZE + RELATIVE_ADDR_SIZE)
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#define MAX_OPTIMIZED_LENGTH (MAX_INSN_SIZE + RELATIVE_ADDR_SIZE)
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#define MAX_OPTINSN_SIZE \
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#define MAX_OPTINSN_SIZE \
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(((unsigned long)&optprobe_template_end - \
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(((unsigned long)&optprobe_template_end - \
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