This is a note to let you know that I've just added the patch titled
alpha: fix syscall entry in !AUDUT_SYSCALL case
to the 5.15-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
alpha-fix-syscall-entry-in-audut_syscall-case.patch
and it can be found in the queue-5.15 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 9f4d46b3ec71532682bc3e1067bd60241a9a835f
Author: Al Viro <viro@xxxxxxxxxxxxxxxxxx>
Date: Sat Sep 18 18:18:48 2021 -0400
alpha: fix syscall entry in !AUDUT_SYSCALL case
[ Upstream commit f7b2431a6d22f7a91c567708e071dfcd6d66db14 ]
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@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/arch/alpha/kernel/entry.S b/arch/alpha/kernel/entry.S
index e227f3a29a43..c41a5a9c3b9f 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
