tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: bee0e7762ad2c6025b9f5245c040fcc36ef2bde8 commit: 96f1b00138cb8f04c742c82d0a7c460b2202e887 ARCv2: save ABI registers across signal handling date: 2 years, 6 months ago config: arc-randconfig-r111-20231107 (https://download.01.org/0day-ci/archive/20231208/202312080515.vdboqre6-...@intel.com/config) compiler: arceb-elf-gcc (GCC) 13.2.0 reproduce: (https://download.01.org/0day-ci/archive/20231208/202312080515.vdboqre6-...@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 <l...@intel.com> | Closes: https://lore.kernel.org/oe-kbuild-all/202312080515.vdboqre6-...@intel.com/ sparse warnings: (new ones prefixed by >>) >> arch/arc/kernel/signal.c:77:31: sparse: sparse: incorrect type in argument 1 >> (different address spaces) @@ expected void [noderef] __user *to @@ >> got struct user_regs_arcv2 * @@ arch/arc/kernel/signal.c:77:31: sparse: expected void [noderef] __user *to arch/arc/kernel/signal.c:77:31: sparse: got struct user_regs_arcv2 * >> arch/arc/kernel/signal.c:88:41: sparse: sparse: incorrect type in argument 2 >> (different address spaces) @@ expected void const [noderef] __user *from >> @@ got struct user_regs_arcv2 * @@ arch/arc/kernel/signal.c:88:41: sparse: expected void const [noderef] __user *from arch/arc/kernel/signal.c:88:41: sparse: got struct user_regs_arcv2 * >> arch/arc/kernel/signal.c:134:42: sparse: sparse: incorrect type in argument >> 1 (different address spaces) @@ expected struct sigcontext *mctx @@ >> got struct sigcontext [noderef] __user * @@ arch/arc/kernel/signal.c:134:42: sparse: expected struct sigcontext *mctx arch/arc/kernel/signal.c:134:42: sparse: got struct sigcontext [noderef] __user * arch/arc/kernel/signal.c:153:45: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected struct sigcontext *mctx @@ got struct sigcontext [noderef] __user * @@ arch/arc/kernel/signal.c:153:45: sparse: expected struct sigcontext *mctx arch/arc/kernel/signal.c:153:45: sparse: got struct sigcontext [noderef] __user * vim +77 arch/arc/kernel/signal.c 63 64 static int save_arcv2_regs(struct sigcontext *mctx, struct pt_regs *regs) 65 { 66 int err = 0; 67 #ifndef CONFIG_ISA_ARCOMPACT 68 struct user_regs_arcv2 v2abi; 69 70 v2abi.r30 = regs->r30; 71 #ifdef CONFIG_ARC_HAS_ACCL_REGS 72 v2abi.r58 = regs->r58; 73 v2abi.r59 = regs->r59; 74 #else 75 v2abi.r58 = v2abi.r59 = 0; 76 #endif > 77 err = __copy_to_user(&mctx->v2abi, &v2abi, sizeof(v2abi)); 78 #endif 79 return err; 80 } 81 82 static int restore_arcv2_regs(struct sigcontext *mctx, struct pt_regs *regs) 83 { 84 int err = 0; 85 #ifndef CONFIG_ISA_ARCOMPACT 86 struct user_regs_arcv2 v2abi; 87 > 88 err = __copy_from_user(&v2abi, &mctx->v2abi, sizeof(v2abi)); 89 90 regs->r30 = v2abi.r30; 91 #ifdef CONFIG_ARC_HAS_ACCL_REGS 92 regs->r58 = v2abi.r58; 93 regs->r59 = v2abi.r59; 94 #endif 95 #endif 96 return err; 97 } 98 99 static int 100 stash_usr_regs(struct rt_sigframe __user *sf, struct pt_regs *regs, 101 sigset_t *set) 102 { 103 int err; 104 struct user_regs_struct uregs; 105 106 uregs.scratch.bta = regs->bta; 107 uregs.scratch.lp_start = regs->lp_start; 108 uregs.scratch.lp_end = regs->lp_end; 109 uregs.scratch.lp_count = regs->lp_count; 110 uregs.scratch.status32 = regs->status32; 111 uregs.scratch.ret = regs->ret; 112 uregs.scratch.blink = regs->blink; 113 uregs.scratch.fp = regs->fp; 114 uregs.scratch.gp = regs->r26; 115 uregs.scratch.r12 = regs->r12; 116 uregs.scratch.r11 = regs->r11; 117 uregs.scratch.r10 = regs->r10; 118 uregs.scratch.r9 = regs->r9; 119 uregs.scratch.r8 = regs->r8; 120 uregs.scratch.r7 = regs->r7; 121 uregs.scratch.r6 = regs->r6; 122 uregs.scratch.r5 = regs->r5; 123 uregs.scratch.r4 = regs->r4; 124 uregs.scratch.r3 = regs->r3; 125 uregs.scratch.r2 = regs->r2; 126 uregs.scratch.r1 = regs->r1; 127 uregs.scratch.r0 = regs->r0; 128 uregs.scratch.sp = regs->sp; 129 130 err = __copy_to_user(&(sf->uc.uc_mcontext.regs.scratch), &uregs.scratch, 131 sizeof(sf->uc.uc_mcontext.regs.scratch)); 132 133 if (is_isa_arcv2()) > 134 err |= save_arcv2_regs(&(sf->uc.uc_mcontext), regs); 135 136 err |= __copy_to_user(&sf->uc.uc_sigmask, set, sizeof(sigset_t)); 137 138 return err ? -EFAULT : 0; 139 } 140 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki _______________________________________________ linux-snps-arc mailing list linux-snps-arc@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-snps-arc
