linux-kernel - sound/core/seq/snd-seq.o: warning: objtool: cc_ev_to_ump_midi2+0x589: return with modified stack frame

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Message-ID: <202503200535.J3hAvcjw-lkp@intel.com>
Date: Thu, 20 Mar 2025 06:00:17 +0800
From: kernel test robot <lkp@...el.com>
To: Takashi Iwai <tiwai@...e.de>
Cc: llvm@...ts.linux.dev, oe-kbuild-all@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Subject: sound/core/seq/snd-seq.o: warning: objtool:
 cc_ev_to_ump_midi2+0x589: return with modified stack frame

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   81e4f8d68c66da301bb881862735bd74c6241a19
commit: a4ff92ff0bdd731eca9f0b50b1cbb5aba89be4b2 ALSA: seq: ump: Transmit RPN/NRPN message at each MSB/LSB data reception
date:   8 months ago
config: x86_64-buildonly-randconfig-003-20250320 (https://download.01.org/0day-ci/archive/20250320/202503200535.J3hAvcjw-lkp@intel.com/config)
compiler: clang version 20.1.0 (https://github.com/llvm/llvm-project 24a30daaa559829ad079f2ff7f73eb4e18095f88)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250320/202503200535.J3hAvcjw-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/202503200535.J3hAvcjw-lkp@intel.com/

All warnings (new ones prefixed by >>):

   ld.lld: warning: call to __read_overflow2_field marked "dontcall-warn": detected read beyond size of field (2nd parameter); maybe use struct_group()?
>> sound/core/seq/snd-seq.o: warning: objtool: cc_ev_to_ump_midi2+0x589: return with modified stack frame

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