diff options
| author | Heiko Carstens <hca@linux.ibm.com> | 2024-07-25 12:31:52 +0300 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2024-07-31 17:30:20 +0300 |
| commit | 4734406c39238cbeafe66f0060084caa3247ff53 (patch) | |
| tree | 10b491e288d98cce097c9991d518eccd12ece707 | |
| parent | 8400291e289ee6b2bf9779ff1c83a291501f017b (diff) | |
| download | linux-4734406c39238cbeafe66f0060084caa3247ff53.tar.xz | |
s390/fpu: Re-add exception handling in load_fpu_state()
With the recent rewrite of the fpu code exception handling for the
lfpc instruction within load_fpu_state() was erroneously removed.
Add it again to prevent that loading invalid floating point register
values cause an unhandled specification exception.
Fixes: 8c09871a950a ("s390/fpu: limit save and restore to used registers")
Cc: stable@vger.kernel.org
Reported-by: Aristeu Rozanski <aris@redhat.com>
Tested-by: Aristeu Rozanski <aris@redhat.com>
Reviewed-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
| -rw-r--r-- | arch/s390/kernel/fpu.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/kernel/fpu.c b/arch/s390/kernel/fpu.c index fa90bbdc5ef9..6f2e87920288 100644 --- a/arch/s390/kernel/fpu.c +++ b/arch/s390/kernel/fpu.c @@ -113,7 +113,7 @@ void load_fpu_state(struct fpu *state, int flags) int mask; if (flags & KERNEL_FPC) - fpu_lfpc(&state->fpc); + fpu_lfpc_safe(&state->fpc); if (!cpu_has_vx()) { if (flags & KERNEL_VXR_V0V7) load_fp_regs_vx(state->vxrs); |