On Mon, 2014-07-07 at 18:21 +0300, Andy Shevchenko wrote:
> diff --git a/lib/vsprintf.c b/lib/vsprintf.c
[]
> static noinline_for_stack
> +char *escaped_string(char *buf, char *end, u8 *addr, struct printf_spec spec,
> + const char *fmt)
[]
> + if (spec.field_width == 0)
> + /* nothing to print */
> + return buf;
[]
> + len = spec.field_width < 0 ? 1 : spec.field_width;
If field_width is not specified, emit a single byte?
Perhaps better if -1 was accepted by string_escape_mem
as a strlen request or just ignored as a 0 length is
above.
fyi: hex_string emits nothing on printk("%ph", buf);
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