target/i386: fix shadowed variable pasto

Commit a908985971a ("target/i386/seg_helper: introduce tss_set_busy",
2023-09-26) failed to use the tss_selector argument of the new function,
which was therefore unused.

This shows up as a #GP fault when booting old versions of 32-bit
Linux.

Fixes: a908985971a ("target/i386/seg_helper: introduce tss_set_busy", 2023-09-26)
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-ID: <20231011135350.438492-1-pbonzini@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>

diff --git a/target/i386/tcg/seg_helper.c b/target/i386/tcg/seg_helper.c
index 2b92aee2073526267cf46e05e2b80eed39000141..eb29a1fd4e7225c7e7aace73dcf2a914e8395389 100644 (file)
--- a/target/i386/tcg/seg_helper.c
+++ b/target/i386/tcg/seg_helper.c
@@ -229,7 +229,7 @@ static void tss_load_seg(CPUX86State *env, X86Seg seg_reg, int selector,
 static void tss_set_busy(CPUX86State *env, int tss_selector, bool value,
                          uintptr_t retaddr)
 {
-    target_ulong ptr = env->gdt.base + (env->tr.selector & ~7);
+    target_ulong ptr = env->gdt.base + (tss_selector & ~7);
     uint32_t e2 = cpu_ldl_kernel_ra(env, ptr + 4, retaddr);
 
     if (value) {