server: Reset hardware breakpoint sizes before setting them.

Workaround for kernel bug 200965. Signed-off-by: Alexandre Julliard <julliard@winehq.org>

server: Reset hardware breakpoint sizes before setting them.
53375be4 · Alexandre Julliard · 530df61f · 53375be4
Commit 53375be4 authored Dec 18, 2018 by Alexandre Julliard
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ptrace.c server/ptrace.c +3 -0

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--- a/server/ptrace.c
+++ b/server/ptrace.c
@@ -628,6 +628,9 @@ void set_thread_context( struct thread *thread, const context_t *context, unsign

    if (!suspend_for_ptrace( thread )) return;

+    /* force all breakpoint lengths to 1, workaround for kernel bug 200965 */
+    ptrace( PTRACE_POKEUSER, pid, DR_OFFSET(7), 0x11110055 );
+
    switch (context->cpu)
    {
    case CPU_x86: