[PATCH 4/9] ntdll: Suppress callback exceptions in KiUserCallbackDispatcher.

[Jacek Caban]

From: Jacek Caban

---
 dlls/ntdll/signal_arm.c         | 16 ++++++++++++++--
 dlls/ntdll/signal_arm64.c       | 16 ++++++++++++++--
 dlls/ntdll/signal_i386.c        | 16 ++++++++++++++--
 dlls/ntdll/signal_x86_64.c      | 16 ++++++++++++++--
 dlls/ntdll/unix/signal_arm.c    |  3 +++
 dlls/ntdll/unix/signal_arm64.c  |  3 +++
 dlls/ntdll/unix/signal_i386.c   |  3 +++
 dlls/ntdll/unix/signal_x86_64.c |  3 +++
 8 files changed, 68 insertions(+), 8 deletions(-)

diff --git a/dlls/ntdll/signal_arm.c b/dlls/ntdll/signal_arm.c
index d0229d934ce..c3674487277 100644
--- a/dlls/ntdll/signal_arm.c
+++ b/dlls/ntdll/signal_arm.c
@@ -533,9 +533,21 @@ void WINAPI KiUserApcDispatcher( CONTEXT *context, ULONG_PTR ctx, ULONG_PTR arg1
  */
 void WINAPI KiUserCallbackDispatcher( ULONG id, void *args, ULONG len )
 {
-    NTSTATUS (WINAPI *func)(void *, ULONG) = ((void **)NtCurrentTeb()->Peb->KernelCallbackTable)[id];
+    NTSTATUS status;
+
+    __TRY
+    {
+        NTSTATUS (WINAPI *func)(void *, ULONG) = ((void **)NtCurrentTeb()->Peb->KernelCallbackTable)[id];
+        status = NtCallbackReturn( NULL, 0, func( args, len ));
+    }
+    __EXCEPT_ALL
+    {
+        ERR_(seh)( "ignoring exception\n" );
+        status = NtCallbackReturn( 0, 0, 0 );
+    }
+    __ENDTRY

-    RtlRaiseStatus( NtCallbackReturn( NULL, 0, func( args, len )));
+    RtlRaiseStatus( status );
 }

diff --git a/dlls/ntdll/signal_arm64.c b/dlls/ntdll/signal_arm64.c
index 959c3ea50dc..ee3204ebce8 100644
--- a/dlls/ntdll/signal_arm64.c
+++ b/dlls/ntdll/signal_arm64.c
@@ -576,9 +576,21 @@ void WINAPI KiUserApcDispatcher( CONTEXT *context, ULONG_PTR arg1, ULONG_PTR arg
  */
 void WINAPI KiUserCallbackDispatcher( ULONG id, void *args, ULONG len )
 {
-    NTSTATUS (WINAPI *func)(void *, ULONG) = ((void **)NtCurrentTeb()->Peb->KernelCallbackTable)[id];
+    NTSTATUS status;
+
+    __TRY
+    {
+        NTSTATUS (WINAPI *func)(void *, ULONG) = ((void **)NtCurrentTeb()->Peb->KernelCallbackTable)[id];
+        status = NtCallbackReturn( NULL, 0, func( args, len ));
+    }
+    __EXCEPT_ALL
+    {
+        ERR_(seh)( "ignoring exception\n" );
+        status = NtCallbackReturn( 0, 0, 0 );
+    }
+    __ENDTRY

-    RtlRaiseStatus( NtCallbackReturn( NULL, 0, func( args, len )));
+    RtlRaiseStatus( status );
 }

diff --git a/dlls/ntdll/signal_i386.c b/dlls/ntdll/signal_i386.c
index f4c935ecc94..ae065f8c37b 100644
--- a/dlls/ntdll/signal_i386.c
+++ b/dlls/ntdll/signal_i386.c
@@ -257,9 +257,21 @@ void WINAPI KiUserApcDispatcher( CONTEXT *context, ULONG_PTR ctx, ULONG_PTR arg1
  */
 void WINAPI KiUserCallbackDispatcher( ULONG id, void *args, ULONG len )
 {
-    NTSTATUS (WINAPI *func)(void *, ULONG) = ((void **)NtCurrentTeb()->Peb->KernelCallbackTable)[id];
+    NTSTATUS status;
+
+    __TRY
+    {
+        NTSTATUS (WINAPI *func)(void *, ULONG) = ((void **)NtCurrentTeb()->Peb->KernelCallbackTable)[id];
+        status = NtCallbackReturn( NULL, 0, func( args, len ));
+    }
+    __EXCEPT_ALL
+    {
+        ERR_(seh)( "ignoring exception\n" );
+        status = NtCallbackReturn( 0, 0, 0 );
+    }
+    __ENDTRY

-    RtlRaiseStatus( NtCallbackReturn( NULL, 0, func( args, len )));
+    RtlRaiseStatus( status );
 }

diff --git a/dlls/ntdll/signal_x86_64.c b/dlls/ntdll/signal_x86_64.c
index 9957d0c3dfa..b1ab4933b93 100644
--- a/dlls/ntdll/signal_x86_64.c
+++ b/dlls/ntdll/signal_x86_64.c
@@ -661,9 +661,21 @@ __ASM_GLOBAL_FUNC( KiUserApcDispatcher,
  */
 void WINAPI KiUserCallbackDispatcher( ULONG id, void *args, ULONG len )
 {
-    NTSTATUS (WINAPI *func)(void *, ULONG) = ((void **)NtCurrentTeb()->Peb->KernelCallbackTable)[id];
+    NTSTATUS status;
+
+    __TRY
+    {
+        NTSTATUS (WINAPI *func)(void *, ULONG) = ((void **)NtCurrentTeb()->Peb->KernelCallbackTable)[id];
+        status = NtCallbackReturn( NULL, 0, func( args, len ));
+    }
+    __EXCEPT_ALL
+    {
+        ERR_(seh)( "ignoring exception\n" );
+        status = NtCallbackReturn( 0, 0, 0 );
+    }
+    __ENDTRY

-    RtlRaiseStatus( NtCallbackReturn( NULL, 0, func( args, len )));
+    RtlRaiseStatus( status );
 }

diff --git a/dlls/ntdll/unix/signal_arm.c b/dlls/ntdll/unix/signal_arm.c
index 73843ba56a6..5d1478a1ff4 100644
--- a/dlls/ntdll/unix/signal_arm.c
+++ b/dlls/ntdll/unix/signal_arm.c
@@ -721,6 +721,7 @@ struct user_callback_frame
     ULONG               *ret_len;
     __wine_jmp_buf       jmpbuf;
     NTSTATUS             status;
+    void                *teb_frame;
 };

/***********************************************************************
@@ -756,6 +757,7 @@ NTSTATUS WINAPI KeUserModeCallback( ULONG id, const void *args, ULONG len, void
         callback_frame.frame.restore_flags = CONTEXT_INTEGER;
         callback_frame.frame.syscall_table = frame->syscall_table;
         callback_frame.frame.prev_frame    = frame;
+        callback_frame.teb_frame           = NtCurrentTeb()->Tib.ExceptionList;
         arm_thread_data()->syscall_frame = &callback_frame.frame;

__wine_syscall_dispatcher_return( &callback_frame.frame, 0 );
@@ -777,6 +779,7 @@ NTSTATUS WINAPI NtCallbackReturn( void *ret_ptr, ULONG ret_len, NTSTATUS status
     *frame->ret_len = ret_len;
     frame->status = status;
     arm_thread_data()->syscall_frame = frame->frame.prev_frame;
+    NtCurrentTeb()->Tib.ExceptionList = frame->teb_frame;
     __wine_longjmp( &frame->jmpbuf, 1 );
 }

diff --git a/dlls/ntdll/unix/signal_arm64.c b/dlls/ntdll/unix/signal_arm64.c
index 10543322a8f..4e552e0f10a 100644
--- a/dlls/ntdll/unix/signal_arm64.c
+++ b/dlls/ntdll/unix/signal_arm64.c
@@ -730,6 +730,7 @@ struct user_callback_frame
     ULONG               *ret_len;
     __wine_jmp_buf       jmpbuf;
     NTSTATUS             status;
+    void                *teb_frame;
 };

/***********************************************************************
@@ -766,6 +767,7 @@ NTSTATUS WINAPI KeUserModeCallback( ULONG id, const void *args, ULONG len, void
         callback_frame.frame.restore_flags = CONTEXT_INTEGER;
         callback_frame.frame.syscall_table = frame->syscall_table;
         callback_frame.frame.prev_frame    = frame;
+        callback_frame.teb_frame           = NtCurrentTeb()->Tib.ExceptionList;
         arm64_thread_data()->syscall_frame = &callback_frame.frame;

__wine_syscall_dispatcher_return( &callback_frame.frame, 0 );
@@ -787,6 +789,7 @@ NTSTATUS WINAPI NtCallbackReturn( void *ret_ptr, ULONG ret_len, NTSTATUS status
     *frame->ret_len = ret_len;
     frame->status = status;
     arm64_thread_data()->syscall_frame = frame->frame.prev_frame;
+    NtCurrentTeb()->Tib.ExceptionList = frame->teb_frame;
     __wine_longjmp( &frame->jmpbuf, 1 );
 }

diff --git a/dlls/ntdll/unix/signal_i386.c b/dlls/ntdll/unix/signal_i386.c
index 5ddef2701c4..2dfce706394 100644
--- a/dlls/ntdll/unix/signal_i386.c
+++ b/dlls/ntdll/unix/signal_i386.c
@@ -1575,6 +1575,7 @@ struct user_callback_frame
     ULONG               *ret_len;
     __wine_jmp_buf       jmpbuf;
     NTSTATUS             status;
+    void                *teb_frame;
 };

/***********************************************************************
@@ -1614,6 +1615,7 @@ NTSTATUS WINAPI KeUserModeCallback( ULONG id, const void *args, ULONG len, void
         callback_frame.frame.syscall_flags = frame->syscall_flags;
         callback_frame.frame.syscall_table = frame->syscall_table;
         callback_frame.frame.prev_frame    = frame;
+        callback_frame.teb_frame           = NtCurrentTeb()->Tib.ExceptionList;
         x86_thread_data()->syscall_frame = &callback_frame.frame;

__wine_syscall_dispatcher_return( &callback_frame.frame, 0 );
@@ -1635,6 +1637,7 @@ NTSTATUS WINAPI NtCallbackReturn( void *ret_ptr, ULONG ret_len, NTSTATUS status
     *frame->ret_len = ret_len;
     frame->status = status;
     x86_thread_data()->syscall_frame = frame->frame.prev_frame;
+    NtCurrentTeb()->Tib.ExceptionList = frame->teb_frame;
     __wine_longjmp( &frame->jmpbuf, 1 );
 }

diff --git a/dlls/ntdll/unix/signal_x86_64.c b/dlls/ntdll/unix/signal_x86_64.c
index 9b7a19bce72..d6f19dbfa84 100644
--- a/dlls/ntdll/unix/signal_x86_64.c
+++ b/dlls/ntdll/unix/signal_x86_64.c
@@ -2327,6 +2327,7 @@ struct user_callback_frame
     ULONG               *ret_len;
     __wine_jmp_buf       jmpbuf;
     NTSTATUS             status;
+    void                *teb_frame;
 };

/***********************************************************************
@@ -2368,6 +2369,7 @@ NTSTATUS WINAPI KeUserModeCallback( ULONG id, const void *args, ULONG len, void
         callback_frame.frame.prev_frame    = frame;
         callback_frame.frame.syscall_flags = frame->syscall_flags;
         callback_frame.frame.syscall_table = frame->syscall_table;
+        callback_frame.teb_frame           = NtCurrentTeb()->Tib.ExceptionList;
         amd64_thread_data()->syscall_frame = &callback_frame.frame;

__wine_syscall_dispatcher_return( &callback_frame.frame, 0 );
@@ -2389,6 +2391,7 @@ NTSTATUS WINAPI NtCallbackReturn( void *ret_ptr, ULONG ret_len, NTSTATUS status
     *frame->ret_len = ret_len;
     frame->status = status;
     amd64_thread_data()->syscall_frame = frame->frame.prev_frame;
+    NtCurrentTeb()->Tib.ExceptionList = frame->teb_frame;
     __wine_longjmp( &frame->jmpbuf, 1 );
 }