void segv_handler(int sig, struct uml_pt_regs *regs) { struct faultinfo * fi = UPT_FAULTINFO(regs); if (UPT_IS_USER(regs) && !SEGV_IS_FIXABLE(fi)) { bad_segv(*fi, UPT_IP(regs)); return; } segv(*fi, UPT_IP(regs), UPT_IS_USER(regs), regs); }
void relay_signal(int sig, struct uml_pt_regs *regs) { if (!UPT_IS_USER(regs)) { if (sig == SIGBUS) printk(KERN_ERR "Bus error - the host /dev/shm or /tmp " "mount likely just ran out of space\n"); panic("Kernel mode signal %d", sig); } arch_examine_signal(sig, regs); current->thread.arch.faultinfo = *UPT_FAULTINFO(regs); force_sig(sig, current); }
void relay_signal(int sig, union uml_pt_regs *regs) { if(arch_handle_signal(sig, regs)) return; if(!UPT_IS_USER(regs)){ if(sig == SIGBUS) printk("Bus error - the /dev/shm or /tmp mount likely " "just ran out of space\n"); panic("Kernel mode signal %d", sig); } current->thread.arch.faultinfo = *UPT_FAULTINFO(regs); force_sig(sig, current); }
static void show_segv_info(struct uml_pt_regs *regs) { struct task_struct *tsk = current; struct faultinfo *fi = UPT_FAULTINFO(regs); if (!unhandled_signal(tsk, SIGSEGV)) return; if (!printk_ratelimit()) return; printk("%s%s[%d]: segfault at %lx ip %p sp %p error %x", task_pid_nr(tsk) > 1 ? KERN_INFO : KERN_EMERG, tsk->comm, task_pid_nr(tsk), FAULT_ADDRESS(*fi), (void *)UPT_IP(regs), (void *)UPT_SP(regs), fi->error_code); print_vma_addr(KERN_CONT " in ", UPT_IP(regs)); printk(KERN_CONT "\n"); }
void segv_handler(int sig, union uml_pt_regs *regs) { int index, max; struct faultinfo * fi = UPT_FAULTINFO(regs); if(UPT_IS_USER(regs) && !SEGV_IS_FIXABLE(fi)){ bad_segv(*fi, UPT_IP(regs)); return; } max = sizeof(segfault_record)/sizeof(segfault_record[0]); index = next_trap_index(max); nsegfaults++; segfault_record[index].address = FAULT_ADDRESS(*fi); segfault_record[index].pid = os_getpid(); segfault_record[index].is_write = FAULT_WRITE(*fi); segfault_record[index].sp = UPT_SP(regs); segfault_record[index].is_user = UPT_IS_USER(regs); segv(*fi, UPT_IP(regs), UPT_IS_USER(regs), regs); }
void relay_signal(int sig, struct siginfo *si, struct uml_pt_regs *regs) { struct faultinfo *fi; struct siginfo clean_si; if (!UPT_IS_USER(regs)) { if (sig == SIGBUS) printk(KERN_ERR "Bus error - the host /dev/shm or /tmp " "mount likely just ran out of space\n"); panic("Kernel mode signal %d", sig); } arch_examine_signal(sig, regs); memset(&clean_si, 0, sizeof(clean_si)); clean_si.si_signo = si->si_signo; clean_si.si_errno = si->si_errno; clean_si.si_code = si->si_code; switch (sig) { case SIGILL: case SIGFPE: case SIGSEGV: case SIGBUS: case SIGTRAP: fi = UPT_FAULTINFO(regs); clean_si.si_addr = (void __user *) FAULT_ADDRESS(*fi); current->thread.arch.faultinfo = *fi; #ifdef __ARCH_SI_TRAPNO clean_si.si_trapno = si->si_trapno; #endif break; default: printk(KERN_ERR "Attempted to relay unknown signal %d (si_code = %d)\n", sig, si->si_code); } force_sig_info(sig, &clean_si, current); }