From: Sasha Levin <sashal@kernel.org>
To: stable@vger.kernel.org
Cc: Cliff Liu <donghua.liu@windriver.com>, Sasha Levin <sashal@kernel.org>
Subject: Re: [PATCH 6.6.y] powerpc/rtas: Prevent Spectre v1 gadget construction in sys_rtas()
Date: Sun, 13 Apr 2025 12:46:35 -0400 [thread overview]
Message-ID: <20250412100538-96e5cf1aa82cc9a2@stable.kernel.org> (raw)
In-Reply-To: <20250411064213.3647619-1-donghua.liu@windriver.com>
[ Sasha's backport helper bot ]
Hi,
✅ All tests passed successfully. No issues detected.
No action required from the submitter.
The upstream commit SHA1 provided is correct: 0974d03eb479384466d828d65637814bee6b26d7
WARNING: Author mismatch between patch and upstream commit:
Backport author: Cliff Liu<donghua.liu@windriver.com>
Commit author: Nathan Lynch<nathanl@linux.ibm.com>
Status in newer kernel trees:
6.14.y | Present (exact SHA1)
6.13.y | Present (exact SHA1)
6.12.y | Present (exact SHA1)
Note: The patch differs from the upstream commit:
---
1: 0974d03eb4793 ! 1: 510e3f8eef3ac powerpc/rtas: Prevent Spectre v1 gadget construction in sys_rtas()
@@ Metadata
## Commit message ##
powerpc/rtas: Prevent Spectre v1 gadget construction in sys_rtas()
+ [ Upstream commit 0974d03eb479384466d828d65637814bee6b26d7 ]
+
Smatch warns:
arch/powerpc/kernel/rtas.c:1932 __do_sys_rtas() warn: potential
@@ Commit message
Reviewed-by: Breno Leitao <leitao@debian.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://msgid.link/20240530-sys_rtas-nargs-nret-v1-1-129acddd4d89@linux.ibm.com
+ [Minor context change fixed]
+ Signed-off-by: Cliff Liu <donghua.liu@windriver.com>
+ Signed-off-by: He Zhe <Zhe.He@windriver.com>
## arch/powerpc/kernel/rtas.c ##
@@
+ #include <linux/kernel.h>
#include <linux/lockdep.h>
#include <linux/memblock.h>
- #include <linux/mutex.h>
+#include <linux/nospec.h>
#include <linux/of.h>
#include <linux/of_fdt.h>
---
Results of testing on various branches:
| Branch | Patch Apply | Build Test |
|---------------------------|-------------|------------|
| stable/linux-6.6.y | Success | Success |
prev parent reply other threads:[~2025-04-13 16:46 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-04-11 6:42 [PATCH 6.6.y] powerpc/rtas: Prevent Spectre v1 gadget construction in sys_rtas() Cliff Liu
2025-04-13 16:46 ` Sasha Levin [this message]
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