From 648efc40754d15a7f38fc31d50bdc4e04024630d Mon Sep 17 00:00:00 2001 From: Helge Deller Date: Mon, 3 May 2010 20:44:21 +0000 Subject: parisc: clear floating point exception flag on SIGFPE signal commit 550f0d922286556c7ea43974bb7921effb5a5278 upstream. Clear the floating point exception flag before returning to user space. This is needed, else the libc trampoline handler may hit the same SIGFPE again while building up a trampoline to a signal handler. Fixes debian bug #559406. Signed-off-by: Helge Deller Signed-off-by: Kyle McMartin Signed-off-by: Greg Kroah-Hartman --- arch/parisc/math-emu/decode_exc.c | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/parisc/math-emu/decode_exc.c b/arch/parisc/math-emu/decode_exc.c index 66c8a9f6a27e..62ebcde980cf 100644 --- a/arch/parisc/math-emu/decode_exc.c +++ b/arch/parisc/math-emu/decode_exc.c @@ -342,6 +342,7 @@ decode_fpu(unsigned int Fpu_register[], unsigned int trap_counts[]) return SIGNALCODE(SIGFPE, FPE_FLTINV); case DIVISIONBYZEROEXCEPTION: update_trap_counts(Fpu_register, aflags, bflags, trap_counts); + Clear_excp_register(exception_index); return SIGNALCODE(SIGFPE, FPE_FLTDIV); case INEXACTEXCEPTION: update_trap_counts(Fpu_register, aflags, bflags, trap_counts); -- cgit v1.2.3