From: Andy Lutomirski Date: Fri, 14 Aug 2015 22:02:55 +0000 (-0700) Subject: x86/ldt: Further fix FPU emulation X-Git-Tag: v4.13~4705^2 X-Git-Url: https://git.proxmox.com/?a=commitdiff_plain;h=12e244f4b550498bbaf654a52f93633f7dde2dc7;p=mirror_ubuntu-bionic-kernel.git x86/ldt: Further fix FPU emulation The previous fix confused a selector with a segment prefix. Fix it. Compile-tested only. Cc: stable@vger.kernel.org Cc: Juergen Gross Reported-by: Linus Torvalds Fixes: 4809146b86c3 ("x86/ldt: Correct FPU emulation access to LDT") Signed-off-by: Andy Lutomirski Signed-off-by: Linus Torvalds --- 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