[PATCH ARM32 v4.4 V2 31/47] ARM: 8793/1: signal: replace __put_user_error with __put_user
From: Viresh Kumar <viresh.kumar@linaro.org>
Date: 2019-08-01 08:20:57
Also in:
stable
Subsystem:
arm port, the rest · Maintainers:
Russell King, Linus Torvalds
From: Julien Thierry <redacted> Commit 18ea66bd6e7a95bdc598223d72757190916af28b upstream. With Spectre-v1.1 mitigations, __put_user_error is pointless. In an attempt to remove it, replace its references in frame setups with __put_user. Signed-off-by: Julien Thierry <redacted> Signed-off-by: Russell King <redacted> Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> --- arch/arm/kernel/signal.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c
index 6f0bd90f6d93..4a4ab72d27ba 100644
--- a/arch/arm/kernel/signal.c
+++ b/arch/arm/kernel/signal.c@@ -301,7 +301,7 @@ setup_sigframe(struct sigframe __user *sf, struct pt_regs *regs, sigset_t *set) if (err == 0) err |= preserve_vfp_context(&aux->vfp); #endif - __put_user_error(0, &aux->end_magic, err); + err |= __put_user(0, &aux->end_magic); return err; }
@@ -433,7 +433,7 @@ setup_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs) /* * Set uc.uc_flags to a value which sc.trap_no would never have. */ - __put_user_error(0x5ac3c35a, &frame->uc.uc_flags, err); + err = __put_user(0x5ac3c35a, &frame->uc.uc_flags); err |= setup_sigframe(frame, regs, set); if (err == 0)
@@ -453,8 +453,8 @@ setup_rt_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs) err |= copy_siginfo_to_user(&frame->info, &ksig->info); - __put_user_error(0, &frame->sig.uc.uc_flags, err); - __put_user_error(NULL, &frame->sig.uc.uc_link, err); + err |= __put_user(0, &frame->sig.uc.uc_flags); + err |= __put_user(NULL, &frame->sig.uc.uc_link); err |= __save_altstack(&frame->sig.uc.uc_stack, regs->ARM_sp); err |= setup_sigframe(&frame->sig, regs, set);
--
2.21.0.rc0.269.g1a574e7a288b
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel