Re: [linux-next:master 12681/13861] drivers/i2c/i2c-core-base.o: warning: objtool: __i2c_transfer+0x120: stack state mismatch: reg1[24]=-1+0 reg2[24]=-2-24

[Philip Li <philip.li@intel.com>]

On Tue, Apr 01, 2025 at 10:44:57AM +0800, kernel test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
> head:   405e2241def89c88f008dcb899eb5b6d4be8b43c
> commit: 9016dad4dca4bbe61c48ffd5a273cad980caa0d1 [12681/13861] loongarch: add support for suppressing warning backtraces
> config: loongarch-randconfig-001-20250401 (https://download.01.org/0day-ci/archive/20250401/202504011011.jyZ6NtXx-lkp@intel.com/config)
> compiler: loongarch64-linux-gcc (GCC) 14.2.0
> reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250401/202504011011.jyZ6NtXx-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/202504011011.jyZ6NtXx-lkp@intel.com/
> 
> All warnings (new ones prefixed by >>):

FYI: not sure whether this is a false positive due to wrong bisection, as
there's fix [1] for 'stack state mismatch' issue.

  arch/loongarch/kernel/traps.o: warning: objtool: show_stack+0xe0: stack state mismatch: reg1[22]=-1+0 reg2[22]=-2-160
  arch/loongarch/kernel/traps.o: warning: objtool: show_stack+0xe0: stack state mismatch: reg1[23]=-1+0 reg2[23]=-2-152

[1] https://lore.kernel.org/all/270cadd8040dda74db2307f23497bb68e65db98d.1743481539.git.jpoimboe@kernel.org/

> 
> >> drivers/i2c/i2c-core-base.o: warning: objtool: __i2c_transfer+0x120: stack state mismatch: reg1[24]=-1+0 reg2[24]=-2-24
> 
> -- 
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