linux-kernel - [PATCH AUTOSEL 5.15 5/8] powerpc: Remove direct call to personality syscall handler

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Message-Id: <20221014135302.2109489-5-sashal@kernel.org>
Date:   Fri, 14 Oct 2022 09:52:58 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Rohan McLure <rmclure@...ux.ibm.com>,
        Nicholas Piggin <npiggin@...il.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Sasha Levin <sashal@...nel.org>, christophe.leroy@...roup.eu,
        maqianga@...ontech.com, linuxppc-dev@...ts.ozlabs.org
Subject: [PATCH AUTOSEL 5.15 5/8] powerpc: Remove direct call to personality syscall handler

From: Rohan McLure <rmclure@...ux.ibm.com>

[ Upstream commit 4df0221f9ded8c39aecfb1a80cef346026671cb7 ]

Syscall handlers should not be invoked internally by their symbol names,
as these symbols defined by the architecture-defined SYSCALL_DEFINE
macro. Fortunately, in the case of ppc64_personality, its call to
sys_personality can be replaced with an invocation to the
equivalent ksys_personality inline helper in <linux/syscalls.h>.

Signed-off-by: Rohan McLure <rmclure@...ux.ibm.com>
Reviewed-by: Nicholas Piggin <npiggin@...il.com>
Signed-off-by: Michael Ellerman <mpe@...erman.id.au>
Link: https://lore.kernel.org/r/20220921065605.1051927-13-rmclure@linux.ibm.com
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/powerpc/kernel/syscalls.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/kernel/syscalls.c b/arch/powerpc/kernel/syscalls.c
index 825931e400df..8cc676712cce 100644
--- a/arch/powerpc/kernel/syscalls.c
+++ b/arch/powerpc/kernel/syscalls.c
@@ -89,7 +89,7 @@ long ppc64_personality(unsigned long personality)
 	if (personality(current->personality) == PER_LINUX32
 	    && personality(personality) == PER_LINUX)
 		personality = (personality & ~PER_MASK) | PER_LINUX32;
-	ret = sys_personality(personality);
+	ret = ksys_personality(personality);
 	if (personality(ret) == PER_LINUX32)
 		ret = (ret & ~PER_MASK) | PER_LINUX;
 	return ret;
-- 
2.35.1