diff options
Diffstat (limited to 'sys/kern/kern_exec.c')
| -rw-r--r-- | sys/kern/kern_exec.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/sys/kern/kern_exec.c b/sys/kern/kern_exec.c index 0b1b29e..8f49538 100644 --- a/sys/kern/kern_exec.c +++ b/sys/kern/kern_exec.c @@ -412,6 +412,7 @@ exec_map_first_page(imgp) VOP_GETVOBJECT(imgp->vp, &object); s = splvm(); + mtx_lock(&vm_mtx); ma[0] = vm_page_grab(object, 0, VM_ALLOC_NORMAL | VM_ALLOC_RETRY); @@ -443,6 +444,7 @@ exec_map_first_page(imgp) vm_page_free(ma[0]); } splx(s); + mtx_unlock(&vm_mtx); return EIO; } } @@ -454,6 +456,7 @@ exec_map_first_page(imgp) pmap_kenter((vm_offset_t) imgp->image_header, VM_PAGE_TO_PHYS(ma[0])); imgp->firstpage = ma[0]; + mtx_unlock(&vm_mtx); return 0; } @@ -461,9 +464,12 @@ void exec_unmap_first_page(imgp) struct image_params *imgp; { + if (imgp->firstpage) { + mtx_lock(&vm_mtx); pmap_kremove((vm_offset_t) imgp->image_header); vm_page_unwire(imgp->firstpage, 1); + mtx_unlock(&vm_mtx); imgp->firstpage = NULL; } } @@ -482,6 +488,7 @@ exec_new_vmspace(imgp) caddr_t stack_addr = (caddr_t) (USRSTACK - MAXSSIZ); vm_map_t map = &vmspace->vm_map; + mtx_assert(&vm_mtx, MA_OWNED); imgp->vmspace_destroyed = 1; /* |
