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Paranoia... keep vmspace reference while doing pmap_procwr

This commit is contained in:
skrll 2017-04-13 07:58:45 +00:00
parent 1c01928083
commit 070497e366
1 changed files with 4 additions and 3 deletions
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7
sys/kern/sys_process.c
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@ -1,4 +1,4 @@
/* $NetBSD: sys_process.c,v 1.178 2017/03/24 17:40:44 christos Exp $ */
/* $NetBSD: sys_process.c,v 1.179 2017/04/13 07:58:45 skrll Exp $ */
/*-
* Copyright (c) 2008, 2009 The NetBSD Foundation, Inc.
@ -118,7 +118,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: sys_process.c,v 1.178 2017/03/24 17:40:44 christos Exp $");
__KERNEL_RCSID(0, "$NetBSD: sys_process.c,v 1.179 2017/04/13 07:58:45 skrll Exp $");
#ifdef _KERNEL_OPT
#include "opt_ptrace.h"
@ -177,12 +177,13 @@ process_domem(struct lwp *curl /*tracer*/,
if (error != 0)
return error;
error = uvm_io(&vm->vm_map, uio, pax_mprotect_prot(l));
uvmspace_free(vm);
#ifdef PMAP_NEED_PROCWR
if (error == 0 && uio->uio_rw == UIO_WRITE)
pmap_procwr(p, addr, len);
#endif
uvmspace_free(vm);
return error;
}
#endif /* KTRACE || PTRACE_HOOKS */