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authorJulien Thierry <julien.thierry@arm.com>2019-01-09 12:54:04 -0500
committerDavid A. Long <dave.long@linaro.org>2019-02-13 12:08:55 -0500
commit30ce2075fde0b34580b8a5150e9761fad0a6111d (patch)
treed78940e179da96fe7efaa2891223bb0825befccb
parentc86933036244c6c6579623f27e1a82b637425914 (diff)
downloadlinux-linaro-stable-30ce2075fde0b34580b8a5150e9761fad0a6111d.tar.gz
ARM: 8793/1: signal: replace __put_user_error with __put_user
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 <julien.thierry@arm.com> Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> Signed-off-by: David A. Long <dave.long@linaro.org>
-rw-r--r--arch/arm/kernel/signal.c8
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/arm/kernel/signal.c b/arch/arm/kernel/signal.c
index 135b1a8e12eb..0a066f03b5ec 100644
--- a/arch/arm/kernel/signal.c
+++ b/arch/arm/kernel/signal.c
@@ -302,7 +302,7 @@ 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;
}
@@ -434,7 +434,7 @@ 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)
@@ -454,8 +454,8 @@ 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);