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Added patch to ignore invalid exit_frame when exiting thread.
This makes the ntdll-Dealloc_Thread_Stack patchset unnecessary.
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@@ -0,0 +1,81 @@
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From 15ef836edec8fa90f4d02d15d6b071439a65b855 Mon Sep 17 00:00:00 2001
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From: Sebastian Lackner <sebastian@fds-team.de>
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Date: Wed, 13 Apr 2016 06:49:03 +0200
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Subject: ntdll: Ignore invalid exit_frame when exiting thread.
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---
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dlls/ntdll/signal_i386.c | 16 ++++++++++++++++
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dlls/ntdll/signal_x86_64.c | 16 ++++++++++++++++
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2 files changed, 32 insertions(+)
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diff --git a/dlls/ntdll/signal_i386.c b/dlls/ntdll/signal_i386.c
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index 9834c9f..8c09758 100644
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--- a/dlls/ntdll/signal_i386.c
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+++ b/dlls/ntdll/signal_i386.c
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@@ -2832,6 +2832,14 @@ void call_thread_func( LPTHREAD_START_ROUTINE entry, void *arg, void *frame )
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void WINAPI RtlExitUserThread( ULONG status )
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{
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if (!ntdll_get_thread_data()->exit_frame) exit_thread( status );
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+ if (ntdll_get_thread_data()->exit_frame <= NtCurrentTeb()->DeallocationStack ||
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+ ntdll_get_thread_data()->exit_frame > NtCurrentTeb()->Tib.StackBase)
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+ {
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+ WARN( "exit frame outside of stack limits in thread %04x frame %p stack %p-%p\n",
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+ GetCurrentThreadId(), ntdll_get_thread_data()->exit_frame,
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+ NtCurrentTeb()->Tib.StackLimit, NtCurrentTeb()->Tib.StackBase );
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+ exit_thread( status );
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+ }
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call_thread_exit_func( status, exit_thread, ntdll_get_thread_data()->exit_frame );
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}
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@@ -2841,6 +2849,14 @@ void WINAPI RtlExitUserThread( ULONG status )
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void abort_thread( int status )
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{
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if (!ntdll_get_thread_data()->exit_frame) terminate_thread( status );
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+ if (ntdll_get_thread_data()->exit_frame <= NtCurrentTeb()->DeallocationStack ||
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+ ntdll_get_thread_data()->exit_frame > NtCurrentTeb()->Tib.StackBase)
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+ {
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+ WARN( "exit frame outside of stack limits in thread %04x frame %p stack %p-%p\n",
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+ GetCurrentThreadId(), ntdll_get_thread_data()->exit_frame,
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+ NtCurrentTeb()->Tib.StackLimit, NtCurrentTeb()->Tib.StackBase );
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+ terminate_thread( status );
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+ }
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call_thread_exit_func( status, terminate_thread, ntdll_get_thread_data()->exit_frame );
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}
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diff --git a/dlls/ntdll/signal_x86_64.c b/dlls/ntdll/signal_x86_64.c
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index 93475d54..ffbb0f0 100644
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--- a/dlls/ntdll/signal_x86_64.c
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+++ b/dlls/ntdll/signal_x86_64.c
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@@ -3831,6 +3831,14 @@ __ASM_GLOBAL_FUNC( call_thread_exit_func,
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void WINAPI RtlExitUserThread( ULONG status )
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{
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if (!ntdll_get_thread_data()->exit_frame) exit_thread( status );
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+ if (ntdll_get_thread_data()->exit_frame <= NtCurrentTeb()->DeallocationStack ||
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+ ntdll_get_thread_data()->exit_frame > NtCurrentTeb()->Tib.StackBase)
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+ {
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+ WARN( "exit frame outside of stack limits in thread %04x frame %p stack %p-%p\n",
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+ GetCurrentThreadId(), ntdll_get_thread_data()->exit_frame,
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+ NtCurrentTeb()->Tib.StackLimit, NtCurrentTeb()->Tib.StackBase );
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+ exit_thread( status );
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+ }
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call_thread_exit_func( status, exit_thread, ntdll_get_thread_data()->exit_frame );
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}
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@@ -3840,6 +3848,14 @@ void WINAPI RtlExitUserThread( ULONG status )
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void abort_thread( int status )
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{
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if (!ntdll_get_thread_data()->exit_frame) terminate_thread( status );
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+ if (ntdll_get_thread_data()->exit_frame <= NtCurrentTeb()->DeallocationStack ||
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+ ntdll_get_thread_data()->exit_frame > NtCurrentTeb()->Tib.StackBase)
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+ {
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+ WARN( "exit frame outside of stack limits in thread %04x frame %p stack %p-%p\n",
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+ GetCurrentThreadId(), ntdll_get_thread_data()->exit_frame,
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+ NtCurrentTeb()->Tib.StackLimit, NtCurrentTeb()->Tib.StackBase );
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+ terminate_thread( status );
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+ }
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call_thread_exit_func( status, terminate_thread, ntdll_get_thread_data()->exit_frame );
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}
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--
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2.7.1
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@@ -1,2 +1,3 @@
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Fixes: Use a separate stack when starting new threads
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Fixes: Ignore invalid exit_frame when exiting thread
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Depends: ntdll-ThreadTime
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