net: Don't forget pr_fmt on net_dbg_ratelimited for CONFIG_DYNAMIC_DEBUG

commit daddef76c3deaaa7922f9d7b18edbf0a061215c3 upstream.

The implementation of net_dbg_ratelimited in the CONFIG_DYNAMIC_DEBUG
case was added with 2c94b5373 ("net: Implement net_dbg_ratelimited() for
CONFIG_DYNAMIC_DEBUG case"). The implementation strategy was to take the
usual definition of the dynamic_pr_debug macro, but alter it by adding a
call to "net_ratelimit()" in the if statement. This is, in fact, the
correct approach.

However, while doing this, the author of the commit forgot to surround
fmt by pr_fmt, resulting in unprefixed log messages appearing in the
console. So, this commit adds back the pr_fmt(fmt) invocation, making
net_dbg_ratelimited properly consistent across DEBUG, no DEBUG, and
DYNAMIC_DEBUG cases, and bringing parity with the behavior of
dynamic_pr_debug as well.

Fixes: 2c94b5373 ("net: Implement net_dbg_ratelimited() for CONFIG_DYNAMIC_DEBUG case")
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Cc: Tim Bingham <tbingham@akamai.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --git a/include/linux/net.h b/include/linux/net.h
index 6aee99f4b6ae6050742d2b888f63e1b2b923ccaf..8751fe4e8038b174ca39bb2b3044b1411015b1e2 100644 (file)
--- a/include/linux/net.h
+++ b/include/linux/net.h
@@ -248,7 +248,8 @@ do {                                                                        \
        DEFINE_DYNAMIC_DEBUG_METADATA(descriptor, fmt);                 \
        if (unlikely(descriptor.flags & _DPRINTK_FLAGS_PRINT) &&        \
            net_ratelimit())                                            \
-               __dynamic_pr_debug(&descriptor, fmt, ##__VA_ARGS__);    \
+               __dynamic_pr_debug(&descriptor, pr_fmt(fmt),            \
+                                  ##__VA_ARGS__);                      \
 } while (0)
 #elif defined(DEBUG)
 #define net_dbg_ratelimited(fmt, ...)                          \