Alexandre Julliard : ntdll:
Make sure to not unmap anything from reserved areas
Alexandre Julliard
julliard at wine.codeweavers.com
Fri Jul 14 10:50:22 CDT 2006
Module: wine
Branch: refs/heads/master
Commit: c79cf02fae38f26eb91c1f1e43b3950e523930ed
URL: http://source.winehq.org/git/?p=wine.git;a=commit;h=c79cf02fae38f26eb91c1f1e43b3950e523930ed
Author: Alexandre Julliard <julliard at winehq.org>
Date: Thu Jul 13 20:47:07 2006 +0200
ntdll: Make sure to not unmap anything from reserved areas
when using NtFreeVirtualMemory with the MEM_SYSTEM flag.
---
dlls/ntdll/virtual.c | 3 ++-
loader/kthread.c | 4 ++--
loader/pthread.c | 2 +-
3 files changed, 5 insertions(+), 4 deletions(-)
diff --git a/dlls/ntdll/virtual.c b/dlls/ntdll/virtual.c
index cd0beab..2d4f6f3 100644
--- a/dlls/ntdll/virtual.c
+++ b/dlls/ntdll/virtual.c
@@ -1386,7 +1386,8 @@ NTSTATUS WINAPI NtFreeVirtualMemory( HAN
{
/* return the values that the caller should use to unmap the area */
*addr_ptr = view->base;
- *size_ptr = view->size;
+ if (!wine_mmap_is_in_reserved_area( view->base, view->size )) *size_ptr = view->size;
+ else *size_ptr = 0; /* make sure we don't munmap anything from a reserved area */
view->flags |= VFLAG_SYSTEM;
delete_view( view );
}
diff --git a/loader/kthread.c b/loader/kthread.c
index a012aad..577311b 100644
--- a/loader/kthread.c
+++ b/loader/kthread.c
@@ -190,8 +190,8 @@ static void cleanup_thread( void *ptr )
/* copy the info structure since it is on the stack we will free */
struct wine_pthread_thread_info info = *(struct wine_pthread_thread_info *)ptr;
wine_ldt_free_fs( info.teb_sel );
- munmap( info.stack_base, info.stack_size );
- munmap( info.teb_base, info.teb_size );
+ if (info.stack_size) munmap( info.stack_base, info.stack_size );
+ if (info.teb_size) munmap( info.teb_base, info.teb_size );
#ifdef HAVE__LWP_CREATE
_lwp_exit();
#endif
diff --git a/loader/pthread.c b/loader/pthread.c
index b7487a0..a976c4f 100644
--- a/loader/pthread.c
+++ b/loader/pthread.c
@@ -159,7 +159,7 @@ #endif
static void DECLSPEC_NORETURN exit_thread( struct wine_pthread_thread_info *info )
{
wine_ldt_free_fs( info->teb_sel );
- munmap( info->teb_base, info->teb_size );
+ if (info->teb_size) munmap( info->teb_base, info->teb_size );
pthread_exit( (void *)info->exit_status );
}
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