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List:       linux-alpha
Subject:    [PATCH 3/6] alpha: fix syscall entry in !AUDUT_SYSCALL case
From:       Al Viro <viro () zeniv ! linux ! org ! uk>
Date:       2021-09-25 2:55:44
Message-ID: 20210925025548.1694143-3-viro () zeniv ! linux ! org ! uk
[Download RAW message or body]

We only want to take the slow path if SYSCALL_TRACE or SYSCALL_AUDIT is
set; on !AUDIT_SYSCALL configs the current tree hits it whenever _any_
thread flag (including NEED_RESCHED, NOTIFY_SIGNAL, etc.) happens to
be set.

Fixes: a9302e843944 "alpha: Enable system-call auditing support"
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
---
 arch/alpha/kernel/entry.S | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/arch/alpha/kernel/entry.S b/arch/alpha/kernel/entry.S
index e227f3a29a43c..c41a5a9c3b9f2 100644
--- a/arch/alpha/kernel/entry.S
+++ b/arch/alpha/kernel/entry.S
@@ -469,8 +469,10 @@ entSys:
 #ifdef CONFIG_AUDITSYSCALL
 	lda     $6, _TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT
 	and     $3, $6, $3
-#endif
 	bne     $3, strace
+#else
+	blbs    $3, strace		/* check for SYSCALL_TRACE in disguise */
+#endif
 	beq	$4, 1f
 	ldq	$27, 0($5)
 1:	jsr	$26, ($27), sys_ni_syscall
-- 
2.11.0

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