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Subject[PATCH v6 9/9] vsprintf: Avoid confusion between invalid address and value
Date
We are able to detect invalid values handled by %p[iI] printk specifier.
The current error message is "invalid address". It might cause confusion
against "(efault)" reported by the generic valid_pointer_address() check.

Let's unify the style and use the more appropriate error code description
"(einval)".

Signed-off-by: Petr Mladek <pmladek@suse.com>
---
Documentation/core-api/printk-formats.rst | 1 +
lib/vsprintf.c | 2 +-
2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/Documentation/core-api/printk-formats.rst b/Documentation/core-api/printk-formats.rst
index 732943b36828..0cbd98206a20 100644
--- a/Documentation/core-api/printk-formats.rst
+++ b/Documentation/core-api/printk-formats.rst
@@ -56,6 +56,7 @@ might be printed instead of the unreachable information::

(null) data on plain NULL address
(efault) data on invalid address
+ (einval) invalid data on a valid address

Plain Pointers
--------------
diff --git a/lib/vsprintf.c b/lib/vsprintf.c
index 3a95b4d1ca2e..e51cbc2be540 100644
--- a/lib/vsprintf.c
+++ b/lib/vsprintf.c
@@ -1510,7 +1510,7 @@ char *ip_addr_string(char *buf, char *end, const void *ptr,
case AF_INET6:
return ip6_addr_string_sa(buf, end, &sa->v6, spec, fmt);
default:
- return string_nocheck(buf, end, "(invalid address)", spec);
+ return string_nocheck(buf, end, "(einval)", spec);
}}
}

--
2.13.7
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