From: Andy Lutomirski <luto@xxxxxxxxxx>
3.12-stable review patch. If anyone has any objections, please let me know.
===============
commit 12e244f4b550498bbaf654a52f93633f7dde2dc7 upstream.
The previous fix confused a selector with a segment prefix. Fix it.
Compile-tested only.
Cc: stable@xxxxxxxxxxxxxxx
Cc: Juergen Gross <jgross@xxxxxxxx>
Reported-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Fixes: 4809146b86c3 ("x86/ldt: Correct FPU emulation access to LDT")
Signed-off-by: Andy Lutomirski <luto@xxxxxxxxxx>
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Jiri Slaby <jslaby@xxxxxxx>
---
arch/x86/math-emu/get_address.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/math-emu/get_address.c b/arch/x86/math-emu/get_address.c
index d13cab2aec45..8300db71c2a6 100644
--- a/arch/x86/math-emu/get_address.c
+++ b/arch/x86/math-emu/get_address.c
@@ -157,7 +157,7 @@ static long pm_address(u_char FPU_modrm, u_char segment,
addr->selector = PM_REG_(segment);
}
- descriptor = FPU_get_ldt_descriptor(segment);
+ descriptor = FPU_get_ldt_descriptor(addr->selector);
base_address = SEG_BASE_ADDR(descriptor);
address = base_address + offset;
limit = base_address
--
2.5.0
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