tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master head: b16049b21162bb649cdd8519642a35972b7910fe commit: fa8e7cce55da3569259dc270801885c420eb50fe [6433/9793] riscv: Enable Vector code to be built config: riscv-randconfig-s031-20230612 (https://download.01.org/0day-ci/archive/20230614/202306141719.MJHClSrC-lkp@xxxxxxxxx/config) compiler: riscv64-linux-gcc (GCC) 12.3.0 reproduce: mkdir -p ~/bin wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # apt-get install sparse # sparse version: v0.6.4-39-gce1a6720-dirty # https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/?id=fa8e7cce55da3569259dc270801885c420eb50fe git remote add linux-next https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git git fetch --no-tags linux-next master git checkout fa8e7cce55da3569259dc270801885c420eb50fe # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.3.0 ~/bin/make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=riscv olddefconfig COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.3.0 ~/bin/make.cross C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=riscv SHELL=/bin/bash arch/riscv/kernel/ 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@xxxxxxxxx> | Closes: https://lore.kernel.org/oe-kbuild-all/202306141719.MJHClSrC-lkp@xxxxxxxxx/ sparse warnings: (new ones prefixed by >>) WARNING: invalid argument to '-march': '_zihintpause' >> arch/riscv/kernel/signal.c:94:16: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected void *__x @@ got void [noderef] __user *[assigned] datap @@ arch/riscv/kernel/signal.c:94:16: sparse: expected void *__x arch/riscv/kernel/signal.c:94:16: sparse: got void [noderef] __user *[assigned] datap >> arch/riscv/kernel/signal.c:126:15: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void [noderef] __user *datap @@ got void * @@ arch/riscv/kernel/signal.c:126:15: sparse: expected void [noderef] __user *datap arch/riscv/kernel/signal.c:126:15: sparse: got void * >> arch/riscv/kernel/signal.c:126:15: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void [noderef] __user *datap @@ got void * @@ arch/riscv/kernel/signal.c:126:15: sparse: expected void [noderef] __user *datap arch/riscv/kernel/signal.c:126:15: sparse: got void * >> arch/riscv/kernel/signal.c:126:15: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void [noderef] __user *datap @@ got void * @@ arch/riscv/kernel/signal.c:126:15: sparse: expected void [noderef] __user *datap arch/riscv/kernel/signal.c:126:15: sparse: got void * >> arch/riscv/kernel/signal.c:126:15: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void [noderef] __user *datap @@ got void * @@ arch/riscv/kernel/signal.c:126:15: sparse: expected void [noderef] __user *datap arch/riscv/kernel/signal.c:126:15: sparse: got void * vim +94 arch/riscv/kernel/signal.c 8ee0b41898fa26 Greentime Hu 2023-06-05 72 8ee0b41898fa26 Greentime Hu 2023-06-05 73 static long save_v_state(struct pt_regs *regs, void __user **sc_vec) 8ee0b41898fa26 Greentime Hu 2023-06-05 74 { 8ee0b41898fa26 Greentime Hu 2023-06-05 75 struct __riscv_ctx_hdr __user *hdr; 8ee0b41898fa26 Greentime Hu 2023-06-05 76 struct __sc_riscv_v_state __user *state; 8ee0b41898fa26 Greentime Hu 2023-06-05 77 void __user *datap; 8ee0b41898fa26 Greentime Hu 2023-06-05 78 long err; 8ee0b41898fa26 Greentime Hu 2023-06-05 79 8ee0b41898fa26 Greentime Hu 2023-06-05 80 hdr = *sc_vec; 8ee0b41898fa26 Greentime Hu 2023-06-05 81 /* Place state to the user's signal context space after the hdr */ 8ee0b41898fa26 Greentime Hu 2023-06-05 82 state = (struct __sc_riscv_v_state __user *)(hdr + 1); 8ee0b41898fa26 Greentime Hu 2023-06-05 83 /* Point datap right after the end of __sc_riscv_v_state */ 8ee0b41898fa26 Greentime Hu 2023-06-05 84 datap = state + 1; 8ee0b41898fa26 Greentime Hu 2023-06-05 85 8ee0b41898fa26 Greentime Hu 2023-06-05 86 /* datap is designed to be 16 byte aligned for better performance */ 8ee0b41898fa26 Greentime Hu 2023-06-05 87 WARN_ON(unlikely(!IS_ALIGNED((unsigned long)datap, 16))); 8ee0b41898fa26 Greentime Hu 2023-06-05 88 8ee0b41898fa26 Greentime Hu 2023-06-05 89 riscv_v_vstate_save(current, regs); 8ee0b41898fa26 Greentime Hu 2023-06-05 90 /* Copy everything of vstate but datap. */ 8ee0b41898fa26 Greentime Hu 2023-06-05 91 err = __copy_to_user(&state->v_state, ¤t->thread.vstate, 8ee0b41898fa26 Greentime Hu 2023-06-05 92 offsetof(struct __riscv_v_ext_state, datap)); 8ee0b41898fa26 Greentime Hu 2023-06-05 93 /* Copy the pointer datap itself. */ 8ee0b41898fa26 Greentime Hu 2023-06-05 @94 err |= __put_user(datap, &state->v_state.datap); 8ee0b41898fa26 Greentime Hu 2023-06-05 95 /* Copy the whole vector content to user space datap. */ 8ee0b41898fa26 Greentime Hu 2023-06-05 96 err |= __copy_to_user(datap, current->thread.vstate.datap, riscv_v_vsize); 8ee0b41898fa26 Greentime Hu 2023-06-05 97 /* Copy magic to the user space after saving all vector conetext */ 8ee0b41898fa26 Greentime Hu 2023-06-05 98 err |= __put_user(RISCV_V_MAGIC, &hdr->magic); 8ee0b41898fa26 Greentime Hu 2023-06-05 99 err |= __put_user(riscv_v_sc_size, &hdr->size); 8ee0b41898fa26 Greentime Hu 2023-06-05 100 if (unlikely(err)) 8ee0b41898fa26 Greentime Hu 2023-06-05 101 return err; 8ee0b41898fa26 Greentime Hu 2023-06-05 102 8ee0b41898fa26 Greentime Hu 2023-06-05 103 /* Only progress the sv_vec if everything has done successfully */ 8ee0b41898fa26 Greentime Hu 2023-06-05 104 *sc_vec += riscv_v_sc_size; 8ee0b41898fa26 Greentime Hu 2023-06-05 105 return 0; 8ee0b41898fa26 Greentime Hu 2023-06-05 106 } 8ee0b41898fa26 Greentime Hu 2023-06-05 107 8ee0b41898fa26 Greentime Hu 2023-06-05 108 /* 8ee0b41898fa26 Greentime Hu 2023-06-05 109 * Restore Vector extension context from the user's signal frame. This function 8ee0b41898fa26 Greentime Hu 2023-06-05 110 * assumes a valid extension header. So magic and size checking must be done by 8ee0b41898fa26 Greentime Hu 2023-06-05 111 * the caller. 8ee0b41898fa26 Greentime Hu 2023-06-05 112 */ 8ee0b41898fa26 Greentime Hu 2023-06-05 113 static long __restore_v_state(struct pt_regs *regs, void __user *sc_vec) 8ee0b41898fa26 Greentime Hu 2023-06-05 114 { 8ee0b41898fa26 Greentime Hu 2023-06-05 115 long err; 8ee0b41898fa26 Greentime Hu 2023-06-05 116 struct __sc_riscv_v_state __user *state = sc_vec; 8ee0b41898fa26 Greentime Hu 2023-06-05 117 void __user *datap; 8ee0b41898fa26 Greentime Hu 2023-06-05 118 8ee0b41898fa26 Greentime Hu 2023-06-05 119 /* Copy everything of __sc_riscv_v_state except datap. */ 8ee0b41898fa26 Greentime Hu 2023-06-05 120 err = __copy_from_user(¤t->thread.vstate, &state->v_state, 8ee0b41898fa26 Greentime Hu 2023-06-05 121 offsetof(struct __riscv_v_ext_state, datap)); 8ee0b41898fa26 Greentime Hu 2023-06-05 122 if (unlikely(err)) 8ee0b41898fa26 Greentime Hu 2023-06-05 123 return err; 8ee0b41898fa26 Greentime Hu 2023-06-05 124 8ee0b41898fa26 Greentime Hu 2023-06-05 125 /* Copy the pointer datap itself. */ 8ee0b41898fa26 Greentime Hu 2023-06-05 @126 err = __get_user(datap, &state->v_state.datap); 8ee0b41898fa26 Greentime Hu 2023-06-05 127 if (unlikely(err)) 8ee0b41898fa26 Greentime Hu 2023-06-05 128 return err; 8ee0b41898fa26 Greentime Hu 2023-06-05 129 /* 8ee0b41898fa26 Greentime Hu 2023-06-05 130 * Copy the whole vector content from user space datap. Use 8ee0b41898fa26 Greentime Hu 2023-06-05 131 * copy_from_user to prevent information leak. 8ee0b41898fa26 Greentime Hu 2023-06-05 132 */ 8ee0b41898fa26 Greentime Hu 2023-06-05 133 err = copy_from_user(current->thread.vstate.datap, datap, riscv_v_vsize); 8ee0b41898fa26 Greentime Hu 2023-06-05 134 if (unlikely(err)) 8ee0b41898fa26 Greentime Hu 2023-06-05 135 return err; 8ee0b41898fa26 Greentime Hu 2023-06-05 136 8ee0b41898fa26 Greentime Hu 2023-06-05 137 riscv_v_vstate_restore(current, regs); 8ee0b41898fa26 Greentime Hu 2023-06-05 138 8ee0b41898fa26 Greentime Hu 2023-06-05 139 return err; 8ee0b41898fa26 Greentime Hu 2023-06-05 140 } 8ee0b41898fa26 Greentime Hu 2023-06-05 141 #else 8ee0b41898fa26 Greentime Hu 2023-06-05 142 #define save_v_state(task, regs) (0) 8ee0b41898fa26 Greentime Hu 2023-06-05 143 #define __restore_v_state(task, regs) (0) 8ee0b41898fa26 Greentime Hu 2023-06-05 144 #endif 8ee0b41898fa26 Greentime Hu 2023-06-05 145 :::::: The code at line 94 was first introduced by commit :::::: 8ee0b41898fa26f66e32237f179b6989c65600d6 riscv: signal: Add sigcontext save/restore for vector :::::: TO: Greentime Hu <greentime.hu@xxxxxxxxxx> :::::: CC: Palmer Dabbelt <palmer@xxxxxxxxxxxx> -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki
