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always allocate a full ucontext structure so that we don't corrupt memory. 

XXX: needs pullup to 6?
This commit is contained in:
christos 2012-07-20 02:27:36 +00:00
parent a29c93ee4f
commit 8c79b0cd87
1 changed files with 4 additions and 4 deletions
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8
sys/compat/netbsd32/netbsd32_lwp.c
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@ -1,4 +1,4 @@
/* $NetBSD: netbsd32_lwp.c,v 1.13 2012/05/21 14:15:19 martin Exp $ */
/* $NetBSD: netbsd32_lwp.c,v 1.14 2012/07/20 02:27:36 christos Exp $ */
/*
* Copyright (c) 2005, 2006, 2007 The NetBSD Foundation.
@ -27,7 +27,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: netbsd32_lwp.c,v 1.13 2012/05/21 14:15:19 martin Exp $");
__KERNEL_RCSID(0, "$NetBSD: netbsd32_lwp.c,v 1.14 2012/07/20 02:27:36 christos Exp $");
#include <sys/types.h>
#include <sys/param.h>
@ -60,7 +60,7 @@ netbsd32__lwp_create(struct lwp *l, const struct netbsd32__lwp_create_args *uap,
KASSERT(p->p_emul->e_ucsize == sizeof(*newuc));
newuc = kmem_alloc(sizeof(ucontext32_t), KM_SLEEP);
newuc = kmem_alloc(sizeof(ucontext_t), KM_SLEEP);
error = copyin(SCARG_P32(uap, ucp), newuc, p->p_emul->e_ucsize);
if (error)
goto fail;
@ -85,7 +85,7 @@ netbsd32__lwp_create(struct lwp *l, const struct netbsd32__lwp_create_args *uap,
return copyout(&lid, SCARG_P32(uap, new_lwp), sizeof(lid));
fail:
kmem_free(newuc, sizeof(*newuc));
kmem_free(newuc, sizeof(ucontext_t));
return error;
}