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authorHelge Deller <deller@gmx.de>2010-05-03 20:44:21 +0000
committerGreg Kroah-Hartman <gregkh@suse.de>2010-07-05 11:23:07 -0700
commit447926d82934a627152b3841b8014b5b9e01d48d (patch)
tree71d657aa72edfcaff324b466fd35ba30ecbc6cec
parent36346c14bde58f34c0a2df91635895f943eeb58b (diff)
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 <deller@gmx.de> Signed-off-by: Kyle McMartin <kyle@mcmartin.ca> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r--arch/parisc/math-emu/decode_exc.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/parisc/math-emu/decode_exc.c b/arch/parisc/math-emu/decode_exc.c
index 3ca1c6149218..27a7492ddb0d 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);