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Avoid leaking memory if uiomove fails. from openbsd via PR 32251.

This commit is contained in:
chs 2005-12-06 16:01:13 +00:00
parent 62d2755224
commit b794108bfa
1 changed files with 5 additions and 4 deletions
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9
sys/uvm/uvm_io.c
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@ -1,4 +1,4 @@
/* $NetBSD: uvm_io.c,v 1.21 2005/06/27 02:19:48 thorpej Exp $ */
/* $NetBSD: uvm_io.c,v 1.22 2005/12/06 16:01:13 chs Exp $ */
/*
*
@ -39,7 +39,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: uvm_io.c,v 1.21 2005/06/27 02:19:48 thorpej Exp $");
__KERNEL_RCSID(0, "$NetBSD: uvm_io.c,v 1.22 2005/12/06 16:01:13 chs Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -129,8 +129,6 @@ uvm_io(struct vm_map *map, struct uio *uio)
if (sz > togo)
sz = togo;
error = uiomove((caddr_t) (kva + pageoffset), sz, uio);
if (error)
break;
togo -= sz;
baseva += chunksz;
@ -145,6 +143,9 @@ uvm_io(struct vm_map *map, struct uio *uio)
vm_map_unlock(kernel_map);
if (dead_entries != NULL)
uvm_unmap_detach(dead_entries, AMAP_REFALL);
if (error)
break;
}
return (error);
}