linux-kernel - kernel/trace/trace_fprobe.c:1264:12: warning: stack frame size (1032) exceeds limit (1024) in 'trace_fprobe_create

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Message-ID: <202506240416.nZIhDXoO-lkp@intel.com>
Date: Tue, 24 Jun 2025 04:18:46 +0800
From: kernel test robot <lkp@...el.com>
To: "Masami Hiramatsu (Google)" <mhiramat@...nel.org>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	"Steven Rostedt (Google)" <rostedt@...dmis.org>
Subject: kernel/trace/trace_fprobe.c:1264:12: warning: stack frame size
 (1032) exceeds limit (1024) in 'trace_fprobe_create_cb'

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   86731a2a651e58953fc949573895f2fa6d456841
commit: 57faaa04804ccbf16582f7fc7a6b986fd0c0e78c tracing: probe-events: Log error for exceeding the number of arguments
date:   3 months ago
config: s390-defconfig (https://download.01.org/0day-ci/archive/20250624/202506240416.nZIhDXoO-lkp@intel.com/config)
compiler: clang version 21.0.0git (https://github.com/llvm/llvm-project 875b36a8742437b95f623bab1e0332562c7b4b3f)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250624/202506240416.nZIhDXoO-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@...el.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202506240416.nZIhDXoO-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> kernel/trace/trace_fprobe.c:1264:12: warning: stack frame size (1032) exceeds limit (1024) in 'trace_fprobe_create_cb' [-Wframe-larger-than]
    1264 | static int trace_fprobe_create_cb(int argc, const char *argv[])
         |            ^
   1 warning generated.


vim +/trace_fprobe_create_cb +1264 kernel/trace/trace_fprobe.c

8275637215bd3d4 Masami Hiramatsu (Google  2025-01-17  1263) 
8275637215bd3d4 Masami Hiramatsu (Google  2025-01-17 @1264) static int trace_fprobe_create_cb(int argc, const char *argv[])
8275637215bd3d4 Masami Hiramatsu (Google  2025-01-17  1265) {
8275637215bd3d4 Masami Hiramatsu (Google  2025-01-17  1266) 	struct traceprobe_parse_context ctx = {
8275637215bd3d4 Masami Hiramatsu (Google  2025-01-17  1267) 		.flags = TPARG_FL_KERNEL | TPARG_FL_FPROBE,
8275637215bd3d4 Masami Hiramatsu (Google  2025-01-17  1268) 	};
8275637215bd3d4 Masami Hiramatsu (Google  2025-01-17  1269) 	int ret;
8275637215bd3d4 Masami Hiramatsu (Google  2025-01-17  1270) 
8275637215bd3d4 Masami Hiramatsu (Google  2025-01-17  1271) 	trace_probe_log_init("trace_fprobe", argc, argv);
8275637215bd3d4 Masami Hiramatsu (Google  2025-01-17  1272) 	ret = trace_fprobe_create_internal(argc, argv, &ctx);
b1d1e90490b6714 Masami Hiramatsu (Google  2023-08-23  1273) 	traceprobe_finish_parse(&ctx);
334e5519c375701 Masami Hiramatsu (Google  2023-06-06  1274) 	trace_probe_log_clear();
334e5519c375701 Masami Hiramatsu (Google  2023-06-06  1275) 	return ret;
334e5519c375701 Masami Hiramatsu (Google  2023-06-06  1276) }
334e5519c375701 Masami Hiramatsu (Google  2023-06-06  1277) 

:::::: The code at line 1264 was first introduced by commit
:::::: 8275637215bd3d447b31d37f9b8231a013adb042 tracing: Adopt __free() and guard() for trace_fprobe.c

:::::: TO: Masami Hiramatsu (Google) <mhiramat@...nel.org>
:::::: CC: Steven Rostedt (Google) <rostedt@...dmis.org>

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki