block/bfq.o: warning: objtool: bfq_bfqq_expire+0x3a8: sibling call from callable instruction with modified stack frame

block/bfq.o: warning: objtool: bfq_bfqq_expire+0x3a8: sibling call from callable instruction with modified stack frame

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   1f988d0788f50d8464f957e793fab356e2937369
commit: e20ab7d454ee8d1e0e8b9ff73a7c87e84c666b2f LoongArch: Enable jump table for objtool
date:   4 months ago
config: loongarch-randconfig-001-20250707 (https://download.01.org/0day-ci/archive/20250707/202507070332.OZWZVjr0-lkp@intel.com/config)
compiler: clang version 21.0.0git (https://github.com/llvm/llvm-project 61529d9e36fa86782a2458e6bdeedf7f376ef4b5)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250707/202507070332.OZWZVjr0-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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202507070332.OZWZVjr0-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> block/bfq.o: warning: objtool: bfq_bfqq_expire+0x3a8: sibling call from callable instruction with modified stack frame
>> block/bfq.o: warning: objtool: bfq_set_next_ioprio_data+0x54: sibling call from callable instruction with modified stack frame
>> block/bfq.o: warning: objtool: bfq_get_queue+0xbc: sibling call from callable instruction with modified stack frame
--
   drivers/media/i2c/adv7842.c:396:19: warning: unused function 'cec_write_clr_set' [-Wunused-function]
     396 | static inline int cec_write_clr_set(struct v4l2_subdev *sd, u8 reg, u8 mask, u8 val)
         |                   ^~~~~~~~~~~~~~~~~
   1 warning generated.
>> drivers/media/i2c/adv7842.o: warning: objtool: adv7842_g_register+0x48: sibling call from callable instruction with modified stack frame
>> drivers/media/i2c/adv7842.o: warning: objtool: adv7842_s_register+0x44: sibling call from callable instruction with modified stack frame
   drivers/media/i2c/adv7842.o: warning: objtool: adv7842_query_dv_timings+0x254: sibling call from callable instruction with modified stack frame
   drivers/media/i2c/adv7842.o: warning: objtool: select_input+0x3c: sibling call from callable instruction with modified stack frame
>> drivers/media/i2c/adv7842.o: warning: objtool: enable_input+0x3c: sibling call from callable instruction with modified stack frame
   drivers/media/i2c/adv7842.o: warning: objtool: adv7842_s_routing+0x48: sibling call from callable instruction with modified stack frame
   drivers/media/i2c/adv7842.o: warning: objtool: adv7842_querystd+0xc0: sibling call from callable instruction with modified stack frame
>> drivers/media/i2c/adv7842.o: warning: objtool: adv7842_set_format+0x70: sibling call from callable instruction with modified stack frame
>> drivers/media/i2c/adv7842.o: warning: objtool: adv7842_debugfs_if_read+0x84: sibling call from callable instruction with modified stack frame
   drivers/media/i2c/adv7842.o: warning: objtool: adv7842_s_ctrl+0x6c: sibling call from callable instruction with modified stack frame
--
   drivers/staging/gpib/ines/ines_gpib.c:29:23: warning: variable 'nec_priv' set but not used [-Wunused-but-set-variable]
      29 |         struct nec7210_priv *nec_priv;
         |                              ^
   drivers/staging/gpib/ines/ines_gpib.c:1123:21: warning: variable 'dev' set but not used [-Wunused-but-set-variable]
    1123 |         struct local_info *dev;
         |                            ^
   2 warnings generated.
>> drivers/staging/gpib/ines/ines_gpib.o: warning: objtool: ines_common_pci_attach+0x2ac: sibling call from callable instruction with modified stack frame
--
   drivers/staging/gpib/cb7210/cb7210.c:383:23: warning: variable 'nec_priv' set but not used [-Wunused-but-set-variable]
     383 |         struct nec7210_priv *nec_priv;
         |                              ^
   drivers/staging/gpib/cb7210/cb7210.c:1264:24: warning: variable 'handle' set but not used [-Wunused-but-set-variable]
    1264 |         struct pcmcia_device *handle;
         |                               ^
   drivers/staging/gpib/cb7210/cb7210.c:1265:21: warning: variable 'dev' set but not used [-Wunused-but-set-variable]
    1265 |         struct local_info *dev;
         |                            ^
   3 warnings generated.
>> drivers/staging/gpib/cb7210/cb7210.o: warning: objtool: cb7210_accel_read+0x39c: sibling call from callable instruction with modified stack frame
>> drivers/staging/gpib/cb7210/cb7210.o: warning: objtool: cb7210_accel_write+0x15c: sibling call from callable instruction with modified stack frame
>> drivers/staging/gpib/cb7210/cb7210.o: warning: objtool: cb7210_init+0x80: sibling call from callable instruction with modified stack frame
>> drivers/staging/gpib/cb7210/cb7210.o: warning: objtool: cb_isa_attach+0xb0: sibling call from callable instruction with modified stack frame
--
   drivers/video/fbdev/aty/aty128fb.c:534:18: warning: unused function '_aty_ld_8' [-Wunused-function]
     534 | static inline u8 _aty_ld_8(unsigned int regindex,
         |                  ^~~~~~~~~
   1 warning generated.
>> drivers/video/fbdev/aty/aty128fb.o: warning: objtool: aty128_timings+0x1a8: sibling call from callable instruction with modified stack frame
   drivers/video/fbdev/aty/aty128fb.o: warning: objtool: aty128fb_check_var+0xa4: sibling call from callable instruction with modified stack frame
>> drivers/video/fbdev/aty/aty128fb.o: warning: objtool: aty128fb_setcolreg+0xb4: sibling call from callable instruction with modified stack frame
>> drivers/video/fbdev/aty/aty128fb.o: warning: objtool: aty128fb_blank+0x5c: sibling call from callable instruction with modified stack frame

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