diff options
Diffstat (limited to 'arch/um/os-Linux/skas/process.c')
| -rw-r--r-- | arch/um/os-Linux/skas/process.c | 21 |
1 files changed, 11 insertions, 10 deletions
diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c index 8548f126d628..e60d6e6c5a58 100644 --- a/arch/um/os-Linux/skas/process.c +++ b/arch/um/os-Linux/skas/process.c @@ -191,22 +191,23 @@ static int userspace_tramp(void *stack) int fd; unsigned long long offset; fd = phys_mapping(to_phys(&__syscall_stub_start), &offset); - addr = mmap64((void *) UML_CONFIG_STUB_CODE, UM_KERN_PAGE_SIZE, + addr = mmap64((void *) STUB_CODE, UM_KERN_PAGE_SIZE, PROT_EXEC, MAP_FIXED | MAP_PRIVATE, fd, offset); if (addr == MAP_FAILED) { - printk(UM_KERN_ERR "mapping mmap stub failed, " - "errno = %d\n", errno); + printk(UM_KERN_ERR "mapping mmap stub at 0x%lx failed, " + "errno = %d\n", STUB_CODE, errno); exit(1); } if (stack != NULL) { fd = phys_mapping(to_phys(stack), &offset); - addr = mmap((void *) UML_CONFIG_STUB_DATA, + addr = mmap((void *) STUB_DATA, UM_KERN_PAGE_SIZE, PROT_READ | PROT_WRITE, MAP_FIXED | MAP_SHARED, fd, offset); if (addr == MAP_FAILED) { printk(UM_KERN_ERR "mapping segfault stack " - "failed, errno = %d\n", errno); + "at 0x%lx failed, errno = %d\n", + STUB_DATA, errno); exit(1); } } @@ -214,11 +215,11 @@ static int userspace_tramp(void *stack) if (!ptrace_faultinfo && (stack != NULL)) { struct sigaction sa; - unsigned long v = UML_CONFIG_STUB_CODE + + unsigned long v = STUB_CODE + (unsigned long) stub_segv_handler - (unsigned long) &__syscall_stub_start; - set_sigstack((void *) UML_CONFIG_STUB_DATA, UM_KERN_PAGE_SIZE); + set_sigstack((void *) STUB_DATA, UM_KERN_PAGE_SIZE); sigemptyset(&sa.sa_mask); sigaddset(&sa.sa_mask, SIGIO); sigaddset(&sa.sa_mask, SIGWINCH); @@ -382,10 +383,10 @@ static int __init init_thread_regs(void) { get_safe_registers(thread_regs); /* Set parent's instruction pointer to start of clone-stub */ - thread_regs[REGS_IP_INDEX] = UML_CONFIG_STUB_CODE + + thread_regs[REGS_IP_INDEX] = STUB_CODE + (unsigned long) stub_clone_handler - (unsigned long) &__syscall_stub_start; - thread_regs[REGS_SP_INDEX] = UML_CONFIG_STUB_DATA + UM_KERN_PAGE_SIZE - + thread_regs[REGS_SP_INDEX] = STUB_DATA + UM_KERN_PAGE_SIZE - sizeof(void *); #ifdef __SIGNAL_FRAMESIZE thread_regs[REGS_SP_INDEX] -= __SIGNAL_FRAMESIZE; @@ -443,7 +444,7 @@ int copy_context_skas0(unsigned long new_stack, int pid) * child's stack and check it. */ wait_stub_done(pid); - if (child_data->err != UML_CONFIG_STUB_DATA) + if (child_data->err != STUB_DATA) panic("copy_context_skas0 - stub-child reports error %ld\n", child_data->err); |