diff options
| author |   Thomas Gleixner <tglx@linutronix.de> | 2021-10-13 16:55:48 +0200 |
|---|---|---|
| committer |   Borislav Petkov <bp@suse.de> | 2021-10-21 14:02:25 +0200 |
| commit | be31dfdfd75b172af3ddcfa7511cdc3bb7adb25e (patch) | |
| tree | 78afe26b0af7da91e9984224711de2e26b6e9114 /arch/x86/kernel/fpu/signal.c | |
| parent | x86/fpu: Add size and mask information to fpstate (diff) | |
| download | wireguard-linux-be31dfdfd75b172af3ddcfa7511cdc3bb7adb25e.tar.xz wireguard-linux-be31dfdfd75b172af3ddcfa7511cdc3bb7adb25e.zip | |
x86/fpu: Use fpstate::size
Make use of fpstate::size in various places which require the buffer size
information for sanity checks or memcpy() sizing.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20211013145322.973518954@linutronix.de
Diffstat (limited to 'arch/x86/kernel/fpu/signal.c')
| -rw-r--r-- | arch/x86/kernel/fpu/signal.c | 7 |
1 files changed, 3 insertions, 4 deletions
diff --git a/arch/x86/kernel/fpu/signal.c b/arch/x86/kernel/fpu/signal.c index c54c2a3dda44..aa9329189864 100644 --- a/arch/x86/kernel/fpu/signal.c +++ b/arch/x86/kernel/fpu/signal.c @@ -313,15 +313,13 @@ retry: static bool __fpu_restore_sig(void __user *buf, void __user *buf_fx, bool ia32_fxstate) { - int state_size = fpu_kernel_xstate_size; struct task_struct *tsk = current; struct fpu *fpu = &tsk->thread.fpu; struct user_i387_ia32_struct env; + bool success, fx_only = false; union fpregs_state *fpregs; + unsigned int state_size; u64 user_xfeatures = 0; - bool fx_only = false; - bool success; - if (use_xsave()) { struct _fpx_sw_bytes fx_sw_user; @@ -334,6 +332,7 @@ static bool __fpu_restore_sig(void __user *buf, void __user *buf_fx, user_xfeatures = fx_sw_user.xfeatures; } else { user_xfeatures = XFEATURE_MASK_FPSSE; + state_size = fpu->fpstate->size; } if (likely(!ia32_fxstate)) { |