tracing: Mark binary printing functions with __printf() attribute
authorAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Fri, 21 Mar 2025 14:40:49 +0000 (16:40 +0200)
committerPetr Mladek <pmladek@suse.com>
Fri, 28 Mar 2025 12:37:11 +0000 (13:37 +0100)
commit196a062641fe68d9bfe0ad36b6cd7628c99ad22c
tree4807fa0775d48457bdf8a18a5d8e25aeff41807c
parent6b2c1e30ad6846624d935a7ea98dae60458126b8
tracing: Mark binary printing functions with __printf() attribute

Binary printing functions are using printf() type of format, and compiler
is not happy about them as is:

kernel/trace/trace.c:3292:9: error: function ‘trace_vbprintk’ might be a candidate for ‘gnu_printf’ format attribute [-Werror=suggest-attribute=format]
kernel/trace/trace_seq.c:182:9: error: function ‘trace_seq_bprintf’ might be a candidate for ‘gnu_printf’ format attribute [-Werror=suggest-attribute=format]

Fix the compilation errors by adding __printf() attribute.

While at it, move existing __printf() attributes from the implementations
to the declarations. IT also fixes incorrect attribute parameters that are
used for trace_array_printk().

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Kees Cook <kees@kernel.org>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20250321144822.324050-4-andriy.shevchenko@linux.intel.com
Signed-off-by: Petr Mladek <pmladek@suse.com>
include/linux/trace.h
include/linux/trace_seq.h
kernel/trace/trace.c
kernel/trace/trace.h