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x86/fpu/xstate: Use fpstate for xsave_to_user_sigframe()

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With dynamically enabled features the sigframe code must know the features
which are enabled for the task. Get them from fpstate.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Link: https://lkml.kernel.org/r/20211013145323.077781448@linutronix.de
This commit is contained in:
Thomas Gleixner
2021-10-13 16:55:51 +02:00
committed by Borislav Petkov
parent 073e627a45
commit 0b2d39aa03
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kernel/fpu/xstate.h
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@@ -149,7 +149,7 @@ static inline int xsave_to_user_sigframe(struct xregs_state __user *buf)
* internally, e.g. PKRU. That's user space ABI and also required
* to allow the signal handler to modify PKRU.
*/
u64 mask = xfeatures_mask_uabi();
u64 mask = current->thread.fpu.fpstate->user_xfeatures;
u32 lmask = mask;
u32 hmask = mask >> 32;
int err;