From e4111a6b71f8dc06602bb1d894ddb649e49d1d7d Mon Sep 17 00:00:00 2001 From: kib Date: Wed, 12 Mar 2014 15:13:57 +0000 Subject: [PATCH] Do not vdrop() the tmpfs vnode until it is unlocked. The hold reference might be the last, and then vdrop() would free the vnode. Reported and tested by: bdrewery MFC after: 1 week --- sys/vm/vm_object.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/sys/vm/vm_object.c b/sys/vm/vm_object.c index 1c463ea492ad..1066a9d28c4c 100644 --- a/sys/vm/vm_object.c +++ b/sys/vm/vm_object.c @@ -536,17 +536,18 @@ vm_object_deallocate(vm_object_t object) vhold(vp); VM_OBJECT_WUNLOCK(object); vn_lock(vp, LK_EXCLUSIVE | LK_RETRY); - vdrop(vp); VM_OBJECT_WLOCK(object); if (object->type == OBJT_DEAD || object->ref_count != 1) { VM_OBJECT_WUNLOCK(object); VOP_UNLOCK(vp, 0); + vdrop(vp); return; } if ((object->flags & OBJ_TMPFS) != 0) VOP_UNSET_TEXT(vp); VOP_UNLOCK(vp, 0); + vdrop(vp); } if (object->shadow_count == 0 && object->handle == NULL &&