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Date: Thu, 23 Sep 2021 18:49:24 +0100 From: Guillaume Tucker <guillaume.tucker@...labora.com> To: Anders Roxell <anders.roxell@...aro.org>, tglx@...utronix.de, mingo@...hat.com, bp@...en8.de Cc: x86@...nel.org, linux-kernel@...r.kernel.org, Remi Duraffort <remi.duraffort@...aro.org>, Nick Desaulniers <ndesaulniers@...gle.com>, andrew.cooper3@...rix.com, "kernelci-results@...ups.io" <kernelci-results@...ups.io> Subject: Re: [PATCH] x86/fpu/signal: save_xstate_epilog: fix return polarity On 22/09/2021 21:09, Anders Roxell wrote: > Fix the missing return code polarity in function 'save_xstate_epilog()'. > > Reported-by: Remi Duraffort <remi.duraffort@...aro.org> > Fixes: a2a8fd9a3efd ("x86/fpu/signal: Change return code of restore_fpregs_from_user() to boolean") > Tested-by: Nick Desaulniers <ndesaulniers@...gle.com> > Link: https://github.com/ClangBuiltLinux/linux/issues/1461 > Signed-off-by: Anders Roxell <anders.roxell@...aro.org> > Cc: andrew.cooper3@...rix.com > --- > arch/x86/kernel/fpu/signal.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > diff --git a/arch/x86/kernel/fpu/signal.c b/arch/x86/kernel/fpu/signal.c > index 68f03da2012e..39c7bae97daf 100644 > --- a/arch/x86/kernel/fpu/signal.c > +++ b/arch/x86/kernel/fpu/signal.c > @@ -106,7 +106,7 @@ static inline bool save_xstate_epilog(void __user *buf, int ia32_frame) > err = __copy_to_user(&x->i387.sw_reserved, sw_bytes, sizeof(*sw_bytes)); > > if (!use_xsave()) > - return err; > + return !err; > > err |= __put_user(FP_XSTATE_MAGIC2, > (__u32 __user *)(buf + fpu_user_xstate_size)); > This patch has probably been applied already, but since the issue got bisected and then the fix was verified by KernelCI: Tested-by: "kernelci.org bot" <bot@...nelci.org> For the record, see more details about it here: https://github.com/kernelci/kernelci-project/issues/53 Best wishes, Guillaume
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