From: Kyle Huey <me@xxxxxxxxxxxx> commit 6a877d2450ace4f27c012519e5a1ae818f931983 upstream This will allow copy_sigframe_from_user_to_xstate() to grab the address of thread_struct's pkru value in a later patch. Signed-off-by: Kyle Huey <me@xxxxxxxxxxxx> Signed-off-by: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx> Link: https://lore.kernel.org/all/20221115230932.7126-2-khuey%40kylehuey.com Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- arch/x86/include/asm/fpu/xstate.h | 2 +- arch/x86/kernel/fpu/signal.c | 2 +- arch/x86/kernel/fpu/xstate.c | 4 ++-- 3 files changed, 4 insertions(+), 4 deletions(-) --- a/arch/x86/include/asm/fpu/xstate.h +++ b/arch/x86/include/asm/fpu/xstate.h @@ -137,7 +137,7 @@ extern void __init update_regset_xstate_ void *get_xsave_addr(struct xregs_state *xsave, int xfeature_nr); int xfeature_size(int xfeature_nr); int copy_uabi_from_kernel_to_xstate(struct xregs_state *xsave, const void *kbuf); -int copy_sigframe_from_user_to_xstate(struct xregs_state *xsave, const void __user *ubuf); +int copy_sigframe_from_user_to_xstate(struct task_struct *tsk, const void __user *ubuf); void xsaves(struct xregs_state *xsave, u64 mask); void xrstors(struct xregs_state *xsave, u64 mask); --- a/arch/x86/kernel/fpu/signal.c +++ b/arch/x86/kernel/fpu/signal.c @@ -370,7 +370,7 @@ static int __fpu_restore_sig(void __user fpregs_unlock(); if (use_xsave() && !fx_only) { - ret = copy_sigframe_from_user_to_xstate(&fpu->state.xsave, buf_fx); + ret = copy_sigframe_from_user_to_xstate(tsk, buf_fx); if (ret) return ret; } else { --- a/arch/x86/kernel/fpu/xstate.c +++ b/arch/x86/kernel/fpu/xstate.c @@ -1169,10 +1169,10 @@ int copy_uabi_from_kernel_to_xstate(stru * XSAVE[S] format and copy to the target thread. This is called from the * sigreturn() and rt_sigreturn() system calls. */ -int copy_sigframe_from_user_to_xstate(struct xregs_state *xsave, +int copy_sigframe_from_user_to_xstate(struct task_struct *tsk, const void __user *ubuf) { - return copy_uabi_to_xstate(xsave, NULL, ubuf); + return copy_uabi_to_xstate(&tsk->thread.fpu.state.xsave, NULL, ubuf); } static bool validate_xsaves_xrstors(u64 mask)
