tree: https://github.com/hnaz/linux-mm master head: 5d9ee416b5701096536c7a63c04dbe25012baa9e commit: 133f884fbe299145671d583f255f71b63d9ad63f [89/340] mm: introduce fault_signal_pending() config: mips-allyesconfig (attached as .config) compiler: mips-linux-gcc (GCC) 9.2.0 reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross git checkout 133f884fbe299145671d583f255f71b63d9ad63f # save the attached .config to linux build tree GCC_VERSION=9.2.0 make.cross ARCH=mips If you fix the issue, kindly add following tag Reported-by: kbuild test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): arch/mips/mm/fault.c: In function '__do_page_fault': >> arch/mips/mm/fault.c:157:27: error: passing argument 1 of 'fault_signal_pending' makes integer from pointer without a cast [-Werror=int-conversion] 157 | if (fault_signal_pending(regs)) | ^~~~ | | | struct pt_regs * In file included from include/linux/ptrace.h:7, from arch/mips/mm/fault.c:16: include/linux/sched/signal.h:378:54: note: expected 'unsigned int' but argument is of type 'struct pt_regs *' 378 | static inline bool fault_signal_pending(unsigned int fault_flags, | ~~~~~~~~~~~~~^~~~~~~~~~~ >> arch/mips/mm/fault.c:157:6: error: too few arguments to function 'fault_signal_pending' 157 | if (fault_signal_pending(regs)) | ^~~~~~~~~~~~~~~~~~~~ In file included from include/linux/ptrace.h:7, from arch/mips/mm/fault.c:16: include/linux/sched/signal.h:378:20: note: declared here 378 | static inline bool fault_signal_pending(unsigned int fault_flags, | ^~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors vim +/fault_signal_pending +157 arch/mips/mm/fault.c 89 90 /* 91 * If we're in an interrupt or have no user 92 * context, we must not take the fault.. 93 */ 94 if (faulthandler_disabled() || !mm) 95 goto bad_area_nosemaphore; 96 97 if (user_mode(regs)) 98 flags |= FAULT_FLAG_USER; 99 retry: 100 down_read(&mm->mmap_sem); 101 vma = find_vma(mm, address); 102 if (!vma) 103 goto bad_area; 104 if (vma->vm_start <= address) 105 goto good_area; 106 if (!(vma->vm_flags & VM_GROWSDOWN)) 107 goto bad_area; 108 if (expand_stack(vma, address)) 109 goto bad_area; 110 /* 111 * Ok, we have a good vm_area for this memory access, so 112 * we can handle it.. 113 */ 114 good_area: 115 si_code = SEGV_ACCERR; 116 117 if (write) { 118 if (!(vma->vm_flags & VM_WRITE)) 119 goto bad_area; 120 flags |= FAULT_FLAG_WRITE; 121 } else { 122 if (cpu_has_rixi) { 123 if (address == regs->cp0_epc && !(vma->vm_flags & VM_EXEC)) { 124 #if 0 125 pr_notice("Cpu%d[%s:%d:%0*lx:%ld:%0*lx] XI violation\n", 126 raw_smp_processor_id(), 127 current->comm, current->pid, 128 field, address, write, 129 field, regs->cp0_epc); 130 #endif 131 goto bad_area; 132 } 133 if (!(vma->vm_flags & VM_READ) && 134 exception_epc(regs) != address) { 135 #if 0 136 pr_notice("Cpu%d[%s:%d:%0*lx:%ld:%0*lx] RI violation\n", 137 raw_smp_processor_id(), 138 current->comm, current->pid, 139 field, address, write, 140 field, regs->cp0_epc); 141 #endif 142 goto bad_area; 143 } 144 } else { 145 if (unlikely(!vma_is_accessible(vma))) 146 goto bad_area; 147 } 148 } 149 150 /* 151 * If for any reason at all we couldn't handle the fault, 152 * make sure we exit gracefully rather than endlessly redo 153 * the fault. 154 */ 155 fault = handle_mm_fault(vma, address, flags); 156 > 157 if (fault_signal_pending(regs)) 158 return; 159 160 perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address); 161 if (unlikely(fault & VM_FAULT_ERROR)) { 162 if (fault & VM_FAULT_OOM) 163 goto out_of_memory; 164 else if (fault & VM_FAULT_SIGSEGV) 165 goto bad_area; 166 else if (fault & VM_FAULT_SIGBUS) 167 goto do_sigbus; 168 BUG(); 169 } 170 if (flags & FAULT_FLAG_ALLOW_RETRY) { 171 if (fault & VM_FAULT_MAJOR) { 172 perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, 173 regs, address); 174 tsk->maj_flt++; 175 } else { 176 perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, 177 regs, address); 178 tsk->min_flt++; 179 } 180 if (fault & VM_FAULT_RETRY) { 181 flags &= ~FAULT_FLAG_ALLOW_RETRY; 182 flags |= FAULT_FLAG_TRIED; 183 184 /* 185 * No need to up_read(&mm->mmap_sem) as we would 186 * have already released it in __lock_page_or_retry 187 * in mm/filemap.c. 188 */ 189 190 goto retry; 191 } 192 } 193 194 up_read(&mm->mmap_sem); 195 return; 196 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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