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Thu, 29 Jun 2023 08:05:15 +0000 Date: Thu, 29 Jun 2023 16:04:21 +0800 From: kernel test robot To: =?iso-8859-1?Q?Bj=F6rn_T=F6pel?= , Paul Walmsley , Palmer Dabbelt , Albert Ou , linux-riscv@lists.infradead.org, Andy Chiu Cc: llvm@lists.linux.dev, oe-kbuild-all@lists.linux.dev, =?iso-8859-1?Q?Bj=F6rn_T=F6pel?= , linux-kernel@vger.kernel.org, linux@rivosinc.com, =?iso-8859-1?Q?R=E9mi?= Denis-Courmont , Darius Rad Subject: Re: [PATCH v3] riscv: Discard vector state on syscalls Message-ID: <202306291513.DwaMo6k7-lkp@intel.com> References: <20230629062730.985184-1-bjorn@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20230629062730.985184-1-bjorn@kernel.org> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Björn, kernel test robot noticed the following build errors: [auto build test ERROR on 488833ccdcac118da16701f4ee0673b20ba47fe3] url: https://github.com/intel-lab-lkp/linux/commits/Bj-rn-T-pel/riscv-Discard-vector-state-on-syscalls/20230629-142852 base: 488833ccdcac118da16701f4ee0673b20ba47fe3 patch link: https://lore.kernel.org/r/20230629062730.985184-1-bjorn%40kernel.org patch subject: [PATCH v3] riscv: Discard vector state on syscalls config: riscv-randconfig-r042-20230629 (https://download.01.org/0day-ci/archive/20230629/202306291513.DwaMo6k7-lkp@intel.com/config) compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a) reproduce: (https://download.01.org/0day-ci/archive/20230629/202306291513.DwaMo6k7-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 | Closes: https://lore.kernel.org/oe-kbuild-all/202306291513.DwaMo6k7-lkp@intel.com/ All errors (new ones prefixed by >>): | ~~~~~~~~~~ ^ In file included from arch/riscv/kernel/traps.c:15: In file included from include/linux/kprobes.h:28: In file included from include/linux/ftrace.h:10: In file included from include/linux/trace_recursion.h:5: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from ./arch/riscv/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:751:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 751 | insw(addr, buffer, count); | ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:105:53: note: expanded from macro 'insw' 105 | #define insw(addr, buffer, count) __insw(PCI_IOBASE + (addr), buffer, count) | ~~~~~~~~~~ ^ In file included from arch/riscv/kernel/traps.c:15: In file included from include/linux/kprobes.h:28: In file included from include/linux/ftrace.h:10: In file included from include/linux/trace_recursion.h:5: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from ./arch/riscv/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:759:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 759 | insl(addr, buffer, count); | ^~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:106:53: note: expanded from macro 'insl' 106 | #define insl(addr, buffer, count) __insl(PCI_IOBASE + (addr), buffer, count) | ~~~~~~~~~~ ^ In file included from arch/riscv/kernel/traps.c:15: In file included from include/linux/kprobes.h:28: In file included from include/linux/ftrace.h:10: In file included from include/linux/trace_recursion.h:5: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from ./arch/riscv/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:768:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 768 | outsb(addr, buffer, count); | ^~~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:118:55: note: expanded from macro 'outsb' 118 | #define outsb(addr, buffer, count) __outsb(PCI_IOBASE + (addr), buffer, count) | ~~~~~~~~~~ ^ In file included from arch/riscv/kernel/traps.c:15: In file included from include/linux/kprobes.h:28: In file included from include/linux/ftrace.h:10: In file included from include/linux/trace_recursion.h:5: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from ./arch/riscv/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:777:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 777 | outsw(addr, buffer, count); | ^~~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:119:55: note: expanded from macro 'outsw' 119 | #define outsw(addr, buffer, count) __outsw(PCI_IOBASE + (addr), buffer, count) | ~~~~~~~~~~ ^ In file included from arch/riscv/kernel/traps.c:15: In file included from include/linux/kprobes.h:28: In file included from include/linux/ftrace.h:10: In file included from include/linux/trace_recursion.h:5: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from ./arch/riscv/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:786:2: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 786 | outsl(addr, buffer, count); | ^~~~~~~~~~~~~~~~~~~~~~~~~~ arch/riscv/include/asm/io.h:120:55: note: expanded from macro 'outsl' 120 | #define outsl(addr, buffer, count) __outsl(PCI_IOBASE + (addr), buffer, count) | ~~~~~~~~~~ ^ In file included from arch/riscv/kernel/traps.c:15: In file included from include/linux/kprobes.h:28: In file included from include/linux/ftrace.h:10: In file included from include/linux/trace_recursion.h:5: In file included from include/linux/interrupt.h:11: In file included from include/linux/hardirq.h:11: In file included from ./arch/riscv/include/generated/asm/hardirq.h:1: In file included from include/asm-generic/hardirq.h:17: In file included from include/linux/irq.h:20: In file included from include/linux/io.h:13: In file included from arch/riscv/include/asm/io.h:136: include/asm-generic/io.h:1134:55: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic] 1134 | return (port > MMIO_UPPER_LIMIT) ? NULL : PCI_IOBASE + port; | ~~~~~~~~~~ ^ >> arch/riscv/kernel/traps.c:299:3: error: call to undeclared function 'riscv_v_vstate_discard'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration] 299 | riscv_v_vstate_discard(regs); | ^ arch/riscv/kernel/traps.c:299:3: note: did you mean 'riscv_v_vstate_query'? arch/riscv/include/asm/vector.h:206:20: note: 'riscv_v_vstate_query' declared here 206 | static inline bool riscv_v_vstate_query(struct pt_regs *regs) { return false; } | ^ 13 warnings and 1 error generated. vim +/riscv_v_vstate_discard +299 arch/riscv/kernel/traps.c 290 291 asmlinkage __visible __trap_section void do_trap_ecall_u(struct pt_regs *regs) 292 { 293 if (user_mode(regs)) { 294 ulong syscall = regs->a7; 295 296 regs->epc += 4; 297 regs->orig_a0 = regs->a0; 298 > 299 riscv_v_vstate_discard(regs); 300 301 syscall = syscall_enter_from_user_mode(regs, syscall); 302 303 if (syscall < NR_syscalls) 304 syscall_handler(regs, syscall); 305 else 306 regs->a0 = -ENOSYS; 307 308 syscall_exit_to_user_mode(regs); 309 } else { 310 irqentry_state_t state = irqentry_nmi_enter(regs); 311 312 do_trap_error(regs, SIGILL, ILL_ILLTRP, regs->epc, 313 "Oops - environment call from U-mode"); 314 315 irqentry_nmi_exit(regs, state); 316 } 317 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki