x86/fpu: Reset state for all signal restore failures

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If access_ok() or fpregs_soft_set() fails in __fpu__restore_sig() then the
function just returns but does not clear the FPU state as it does for all
other fatal failures.

Clear the FPU state for these failures as well.

Fixes: 72a671ced6 ("x86, fpu: Unify signal handling code paths for x86 and x86_64 kernels")
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Borislav Petkov <bp@suse.de>
Cc: stable@vger.kernel.org
Link: https://lkml.kernel.org/r/87mtryyhhz.ffs@nanos.tec.linutronix.de

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Thomas Gleixner 2021-06-09 21:18:00 +02:00 • committed by Borislav Petkov

parent 510b80a6a0

commit efa1655049

1 changed files with 15 additions and 11 deletions

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arch/x86/kernel/fpu/signal.c

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