| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.1 004/102] x86/ldt: Further fix FPU emulation | Date | Sat, 19 Sep 2015 10:27:16 -0700 |
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4.1-stable review patch. If anyone has any objections, please let me know.
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From: Andy Lutomirski <luto@kernel.org>
commit 12e244f4b550498bbaf654a52f93633f7dde2dc7 upstream.
The previous fix confused a selector with a segment prefix. Fix it.
Compile-tested only.
Cc: Juergen Gross <jgross@suse.com> Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Fixes: 4809146b86c3 ("x86/ldt: Correct FPU emulation access to LDT") Signed-off-by: Andy Lutomirski <luto@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- arch/x86/math-emu/get_address.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- 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, 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
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