From: <gregkh@linuxfoundation.org>
To: naveen.n.rao@linux.vnet.ibm.com, cascardo@redhat.com,
gregkh@linuxfoundation.org, mpe@ellerman.id.au
Cc: <stable@vger.kernel.org>, <stable-commits@vger.kernel.org>
Subject: Patch "powerpc/bpf/jit: Disable classic BPF JIT on ppc64le" has been added to the 4.4-stable tree
Date: Sun, 04 Feb 2018 12:08:30 +0100 [thread overview]
Message-ID: <1517742510153222@kroah.com> (raw)
This is a note to let you know that I've just added the patch titled
powerpc/bpf/jit: Disable classic BPF JIT on ppc64le
to the 4.4-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:
powerpc-bpf-jit-disable-classic-bpf-jit-on-ppc64le.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@vger.kernel.org> know about it.
>From 844e3be47693f92a108cb1fb3b0606bf25e9c7a6 Mon Sep 17 00:00:00 2001
From: "Naveen N. Rao" <naveen.n.rao@linux.vnet.ibm.com>
Date: Wed, 22 Jun 2016 21:55:01 +0530
Subject: powerpc/bpf/jit: Disable classic BPF JIT on ppc64le
From: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
commit 844e3be47693f92a108cb1fb3b0606bf25e9c7a6 upstream.
Classic BPF JIT was never ported completely to work on little endian
powerpc. However, it can be enabled and will crash the system when used.
As such, disable use of BPF JIT on ppc64le.
Fixes: 7c105b63bd98 ("powerpc: Add CONFIG_CPU_LITTLE_ENDIAN kernel config option.")
Reported-by: Thadeu Lima de Souza Cascardo <cascardo@redhat.com>
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Acked-by: Thadeu Lima de Souza Cascardo <cascardo@redhat.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/powerpc/Kconfig | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -129,7 +129,7 @@ config PPC
select IRQ_FORCED_THREADING
select HAVE_RCU_TABLE_FREE if SMP
select HAVE_SYSCALL_TRACEPOINTS
- select HAVE_BPF_JIT
+ select HAVE_BPF_JIT if CPU_BIG_ENDIAN
select HAVE_ARCH_JUMP_LABEL
select ARCH_HAVE_NMI_SAFE_CMPXCHG
select ARCH_HAS_GCOV_PROFILE_ALL
Patches currently in stable-queue which might be from naveen.n.rao@linux.vnet.ibm.com are
queue-4.4/powerpc-bpf-jit-disable-classic-bpf-jit-on-ppc64le.patch
reply other threads:[~2018-02-04 11:34 UTC|newest]
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