[linux-next:master 8465/8758] arch/arc/kernel/signal.c:101:21: error: 'struct pt_regs' has no member named 'r30'; did you mean 'r10'?

[Vineet Gupta]

On 6/10/21 2:36 PM, kernel test robot wrote:
> Hi Vineet,
>
> FYI, the error/warning still remains.

I posted the v2 patch but didn't yet push my branch. Now done.

Thx,
-Vineet

>
> tree:   https://urldefense.com/v3/__https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git__;!!A4F2R9G_pg!OKqfde4ua3ZrR7XYJtEqASSTLKtjW1iEEeBD5V38iLgNZ9l3CBkaluPc9FDW_E5l$  master
> head:   50a1180e6cf12462bbbf3f2ebc5b93094ed9abee
> commit: 98ec2edf58c820ef953fbdfcf98d706aa804b822 [8465/8758] ARCv2: save ABI registers across signal handling
> config: arc-randconfig-r001-20210610 (attached as .config)
> compiler: arceb-elf-gcc (GCC) 9.3.0
> reproduce (this is a W=1 build):
>          wget https://urldefense.com/v3/__https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross__;!!A4F2R9G_pg!OKqfde4ua3ZrR7XYJtEqASSTLKtjW1iEEeBD5V38iLgNZ9l3CBkaluPc9Cao0rHM$  -O ~/bin/make.cross
>          chmod +x ~/bin/make.cross
>          # https://urldefense.com/v3/__https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=98ec2edf58c820ef953fbdfcf98d706aa804b822__;!!A4F2R9G_pg!OKqfde4ua3ZrR7XYJtEqASSTLKtjW1iEEeBD5V38iLgNZ9l3CBkaluPc9J7KfXQN$
>          git remote add linux-next https://urldefense.com/v3/__https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git__;!!A4F2R9G_pg!OKqfde4ua3ZrR7XYJtEqASSTLKtjW1iEEeBD5V38iLgNZ9l3CBkaluPc9FDW_E5l$
>          git fetch --no-tags linux-next master
>          git checkout 98ec2edf58c820ef953fbdfcf98d706aa804b822
>          # save the attached .config to linux build tree
>          COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arc
>
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp at intel.com>
>
> All errors (new ones prefixed by >>):
>
>     arch/arc/kernel/signal.c: In function 'stash_usr_regs':
>>> arch/arc/kernel/signal.c:101:21: error: 'struct pt_regs' has no member named 'r30'; did you mean 'r10'?
>       101 |   v2abi.r30 = regs->r30;
>           |                     ^~~
>           |                     r10
>     arch/arc/kernel/signal.c: In function 'restore_usr_regs':
>     arch/arc/kernel/signal.c:134:9: error: 'struct pt_regs' has no member named 'r30'; did you mean 'r10'?
>       134 |   regs->r30 = v2abi.r30;
>           |         ^~~
>           |         r10
>     arch/arc/kernel/signal.c: At top level:
>     arch/arc/kernel/signal.c:387:6: warning: no previous prototype for 'do_signal' [-Wmissing-prototypes]
>       387 | void do_signal(struct pt_regs *regs)
>           |      ^~~~~~~~~
>     arch/arc/kernel/signal.c:420:6: warning: no previous prototype for 'do_notify_resume' [-Wmissing-prototypes]
>       420 | void do_notify_resume(struct pt_regs *regs)
>           |      ^~~~~~~~~~~~~~~~
>
>
> vim +101 arch/arc/kernel/signal.c
>
>      63	
>      64	static int
>      65	stash_usr_regs(struct rt_sigframe __user *sf, struct pt_regs *regs,
>      66		       sigset_t *set)
>      67	{
>      68		int err;
>      69		struct user_regs_struct uregs;
>      70	
>      71		uregs.scratch.bta	= regs->bta;
>      72		uregs.scratch.lp_start	= regs->lp_start;
>      73		uregs.scratch.lp_end	= regs->lp_end;
>      74		uregs.scratch.lp_count	= regs->lp_count;
>      75		uregs.scratch.status32	= regs->status32;
>      76		uregs.scratch.ret	= regs->ret;
>      77		uregs.scratch.blink	= regs->blink;
>      78		uregs.scratch.fp	= regs->fp;
>      79		uregs.scratch.gp	= regs->r26;
>      80		uregs.scratch.r12	= regs->r12;
>      81		uregs.scratch.r11	= regs->r11;
>      82		uregs.scratch.r10	= regs->r10;
>      83		uregs.scratch.r9	= regs->r9;
>      84		uregs.scratch.r8	= regs->r8;
>      85		uregs.scratch.r7	= regs->r7;
>      86		uregs.scratch.r6	= regs->r6;
>      87		uregs.scratch.r5	= regs->r5;
>      88		uregs.scratch.r4	= regs->r4;
>      89		uregs.scratch.r3	= regs->r3;
>      90		uregs.scratch.r2	= regs->r2;
>      91		uregs.scratch.r1	= regs->r1;
>      92		uregs.scratch.r0	= regs->r0;
>      93		uregs.scratch.sp	= regs->sp;
>      94	
>      95		err = __copy_to_user(&(sf->uc.uc_mcontext.regs.scratch), &uregs.scratch,
>      96				     sizeof(sf->uc.uc_mcontext.regs.scratch));
>      97	
>      98		if (is_isa_arcv2()) {
>      99			struct user_regs_arcv2 v2abi;
>     100	
>   > 101			v2abi.r30 = regs->r30;
>     102	#ifdef CONFIG_ARC_HAS_ACCL_REGS
>     103			v2abi.r58 = regs->r58;
>     104			v2abi.r59 = regs->r59;
>     105	#else
>     106			v2abi.r58 = v2abi.r59 = 0;
>     107	#endif
>     108			err |= __copy_to_user(&(sf->uc.uc_mcontext.v2abi), &v2abi,
>     109					      sizeof(sf->uc.uc_mcontext.v2abi));
>     110		}
>     111	
>     112		err |= __copy_to_user(&sf->uc.uc_sigmask, set, sizeof(sigset_t));
>     113	
>     114		return err ? -EFAULT : 0;
>     115	}
>     116	
>
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://urldefense.com/v3/__https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org__;!!A4F2R9G_pg!OKqfde4ua3ZrR7XYJtEqASSTLKtjW1iEEeBD5V38iLgNZ9l3CBkaluPc9LGECAK4$