[GIT PULL] s390 patches for 4.5-rc6

From: Martin Schwidefsky
Date: Thu Feb 25 2016 - 03:30:43 EST


Hi Linus,

please pull from the 'for-linus' branch of

git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git for-linus

to receive the following updates:

Two critical bug fixes for the signal handling.

Martin Schwidefsky (2):
s390/compat: correct restore of high gprs on signal return
s390/fpu: signals vs. floating point control register

arch/s390/include/asm/fpu/internal.h | 2 ++
arch/s390/kernel/compat_signal.c | 2 +-
2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/s390/include/asm/fpu/internal.h b/arch/s390/include/asm/fpu/internal.h
index ea91ddf..629c908 100644
--- a/arch/s390/include/asm/fpu/internal.h
+++ b/arch/s390/include/asm/fpu/internal.h
@@ -40,6 +40,7 @@ static inline void convert_fp_to_vx(__vector128 *vxrs, freg_t *fprs)
static inline void fpregs_store(_s390_fp_regs *fpregs, struct fpu *fpu)
{
fpregs->pad = 0;
+ fpregs->fpc = fpu->fpc;
if (MACHINE_HAS_VX)
convert_vx_to_fp((freg_t *)&fpregs->fprs, fpu->vxrs);
else
@@ -49,6 +50,7 @@ static inline void fpregs_store(_s390_fp_regs *fpregs, struct fpu *fpu)

static inline void fpregs_load(_s390_fp_regs *fpregs, struct fpu *fpu)
{
+ fpu->fpc = fpregs->fpc;
if (MACHINE_HAS_VX)
convert_fp_to_vx(fpu->vxrs, (freg_t *)&fpregs->fprs);
else
diff --git a/arch/s390/kernel/compat_signal.c b/arch/s390/kernel/compat_signal.c
index 66c9441..4af6037 100644
--- a/arch/s390/kernel/compat_signal.c
+++ b/arch/s390/kernel/compat_signal.c
@@ -271,7 +271,7 @@ static int restore_sigregs_ext32(struct pt_regs *regs,

/* Restore high gprs from signal stack */
if (__copy_from_user(&gprs_high, &sregs_ext->gprs_high,
- sizeof(&sregs_ext->gprs_high)))
+ sizeof(sregs_ext->gprs_high)))
return -EFAULT;
for (i = 0; i < NUM_GPRS; i++)
*(__u32 *)&regs->gprs[i] = gprs_high[i];