diff options
Diffstat (limited to 'sys/vm/vm_fault.c')
| -rw-r--r-- | sys/vm/vm_fault.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/sys/vm/vm_fault.c b/sys/vm/vm_fault.c index 81f89f5..2d46350 100644 --- a/sys/vm/vm_fault.c +++ b/sys/vm/vm_fault.c @@ -203,7 +203,7 @@ vm_fault1(vm_map_t map, vm_offset_t vaddr, vm_prot_t fault_type, { vm_prot_t prot; int result; - boolean_t wired; + boolean_t growstack, wired; int map_generation; vm_object_t next_object; vm_page_t marray[VM_FAULT_READ]; @@ -215,6 +215,7 @@ vm_fault1(vm_map_t map, vm_offset_t vaddr, vm_prot_t fault_type, cnt.v_vm_faults++; hardfault = 0; + growstack = TRUE; RetryFault:; @@ -228,6 +229,14 @@ RetryFault:; &fs.first_pindex, &prot, &wired)) != KERN_SUCCESS) { if ((result != KERN_PROTECTION_FAILURE) || ((fault_flags & VM_FAULT_WIRE_MASK) != VM_FAULT_USER_WIRE)) { + if (growstack && result == KERN_INVALID_ADDRESS && + map != kernel_map && curproc != NULL) { + result = vm_map_growstack(curproc, vaddr); + if (result != KERN_SUCCESS) + return (KERN_FAILURE); + growstack = FALSE; + goto RetryFault; + } return result; } |
