[stable:linux-4.19.y 4204/6017] net/atm/mpoa_proc.c:226: Error: unrecognized opcode `csrs sstatus,a2'

[kernel test robot <lkp@intel.com>]

Hi Xiaobo,

First bad commit (maybe != root cause):

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git linux-4.19.y
head:   3f57fb8b1bd06b277556601133823bec370d723f
commit: c5f762b60cd9ae7c766376a94d9c41f4ed613d9f [4204/6017] net/atm: fix proc_mpc_write incorrect return value
config: riscv-randconfig-c004-20230528 (https://download.01.org/0day-ci/archive/20230529/202305290652.NeGKB6BF-lkp@intel.com/config)
compiler: riscv64-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
        mkdir -p ~/bin
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git/commit/?id=c5f762b60cd9ae7c766376a94d9c41f4ed613d9f
        git remote add stable https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git
        git fetch --no-tags stable linux-4.19.y
        git checkout c5f762b60cd9ae7c766376a94d9c41f4ed613d9f
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 ~/bin/make.cross W=1 O=build_dir ARCH=riscv olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 ~/bin/make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash net/atm/

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202305290652.NeGKB6BF-lkp@intel.com/

All errors (new ones prefixed by >>):

   net/atm/mpoa_proc.c: Assembler messages:
>> net/atm/mpoa_proc.c:226: Error: unrecognized opcode `csrs sstatus,a2'
>> net/atm/mpoa_proc.c:226: Error: unrecognized opcode `csrc sstatus,a2'


vim +226 net/atm/mpoa_proc.c

^1da177e4c3f41 Linus Torvalds 2005-04-16  208  
^1da177e4c3f41 Linus Torvalds 2005-04-16  209  static ssize_t proc_mpc_write(struct file *file, const char __user *buff,
^1da177e4c3f41 Linus Torvalds 2005-04-16  210  			      size_t nbytes, loff_t *ppos)
^1da177e4c3f41 Linus Torvalds 2005-04-16  211  {
^1da177e4c3f41 Linus Torvalds 2005-04-16  212  	char *page, *p;
95c961747284a6 Eric Dumazet   2012-04-15  213  	unsigned int len;
^1da177e4c3f41 Linus Torvalds 2005-04-16  214  
^1da177e4c3f41 Linus Torvalds 2005-04-16  215  	if (nbytes == 0)
^1da177e4c3f41 Linus Torvalds 2005-04-16  216  		return 0;
^1da177e4c3f41 Linus Torvalds 2005-04-16  217  
^1da177e4c3f41 Linus Torvalds 2005-04-16  218  	if (nbytes >= PAGE_SIZE)
^1da177e4c3f41 Linus Torvalds 2005-04-16  219  		nbytes = PAGE_SIZE-1;
^1da177e4c3f41 Linus Torvalds 2005-04-16  220  
^1da177e4c3f41 Linus Torvalds 2005-04-16  221  	page = (char *)__get_free_page(GFP_KERNEL);
^1da177e4c3f41 Linus Torvalds 2005-04-16  222  	if (!page)
^1da177e4c3f41 Linus Torvalds 2005-04-16  223  		return -ENOMEM;
^1da177e4c3f41 Linus Torvalds 2005-04-16  224  
c5f762b60cd9ae Xiaobo Liu     2022-10-14  225  	for (p = page, len = 0; len < nbytes; p++) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 @226  		if (get_user(*p, buff++)) {
^1da177e4c3f41 Linus Torvalds 2005-04-16  227  			free_page((unsigned long)page);
^1da177e4c3f41 Linus Torvalds 2005-04-16  228  			return -EFAULT;
^1da177e4c3f41 Linus Torvalds 2005-04-16  229  		}
c5f762b60cd9ae Xiaobo Liu     2022-10-14  230  		len += 1;
^1da177e4c3f41 Linus Torvalds 2005-04-16  231  		if (*p == '\0' || *p == '\n')
^1da177e4c3f41 Linus Torvalds 2005-04-16  232  			break;
^1da177e4c3f41 Linus Torvalds 2005-04-16  233  	}
^1da177e4c3f41 Linus Torvalds 2005-04-16  234  
^1da177e4c3f41 Linus Torvalds 2005-04-16  235  	*p = '\0';
^1da177e4c3f41 Linus Torvalds 2005-04-16  236  
^1da177e4c3f41 Linus Torvalds 2005-04-16  237  	if (!parse_qos(page))
^1da177e4c3f41 Linus Torvalds 2005-04-16  238  		printk("mpoa: proc_mpc_write: could not parse '%s'\n", page);
^1da177e4c3f41 Linus Torvalds 2005-04-16  239  
^1da177e4c3f41 Linus Torvalds 2005-04-16  240  	free_page((unsigned long)page);
^1da177e4c3f41 Linus Torvalds 2005-04-16  241  
^1da177e4c3f41 Linus Torvalds 2005-04-16  242  	return len;
^1da177e4c3f41 Linus Torvalds 2005-04-16  243  }
^1da177e4c3f41 Linus Torvalds 2005-04-16  244  

:::::: The code at line 226 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2

:::::: TO: Linus Torvalds <torvalds@ppc970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@ppc970.osdl.org>

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