This is a note to let you know that I've just added the patch titled
powerpc/ps3_defconfig: Disable PPC64_BIG_ENDIAN_ELF_ABI_V2
to the 6.6-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-ps3_defconfig-disable-ppc64_big_endian_elf_abi_v2.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 482b718a84f08b6fc84879c3e90cc57dba11c115 Mon Sep 17 00:00:00 2001
From: Geoff Levand <geoff@xxxxxxxxxxxxx>
Date: Sun, 24 Dec 2023 09:52:46 +0900
Subject: powerpc/ps3_defconfig: Disable PPC64_BIG_ENDIAN_ELF_ABI_V2
From: Geoff Levand <geoff@xxxxxxxxxxxxx>
commit 482b718a84f08b6fc84879c3e90cc57dba11c115 upstream.
Commit 8c5fa3b5c4df ("powerpc/64: Make ELFv2 the default for big-endian
builds"), merged in Linux-6.5-rc1 changes the calling ABI in a way
that is incompatible with the current code for the PS3's LV1 hypervisor
calls.
This change just adds the line '# CONFIG_PPC64_BIG_ENDIAN_ELF_ABI_V2 is not set'
to the ps3_defconfig file so that the PPC64_ELF_ABI_V1 is used.
Fixes run time errors like these:
BUG: Kernel NULL pointer dereference at 0x00000000
Faulting instruction address: 0xc000000000047cf0
Oops: Kernel access of bad area, sig: 11 [#1]
Call Trace:
[c0000000023039e0] [c00000000100ebfc] ps3_create_spu+0xc4/0x2b0 (unreliable)
[c000000002303ab0] [c00000000100d4c4] create_spu+0xcc/0x3c4
[c000000002303b40] [c00000000100eae4] ps3_enumerate_spus+0xa4/0xf8
Fixes: 8c5fa3b5c4df ("powerpc/64: Make ELFv2 the default for big-endian builds")
Cc: stable@xxxxxxxxxxxxxxx # v6.5+
Signed-off-by: Geoff Levand <geoff@xxxxxxxxxxxxx>
Signed-off-by: Michael Ellerman <mpe@xxxxxxxxxxxxxx>
Link: https://msgid.link/df906ac1-5f17-44b9-b0bb-7cd292a0df65@xxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
arch/powerpc/configs/ps3_defconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/configs/ps3_defconfig b/arch/powerpc/configs/ps3_defconfig
index 2b175ddf82f0..aa8bb0208bcc 100644
--- a/arch/powerpc/configs/ps3_defconfig
+++ b/arch/powerpc/configs/ps3_defconfig
@@ -24,6 +24,7 @@ CONFIG_PS3_VRAM=m
CONFIG_PS3_LPM=m
# CONFIG_PPC_OF_BOOT_TRAMPOLINE is not set
CONFIG_KEXEC=y
+# CONFIG_PPC64_BIG_ENDIAN_ELF_ABI_V2 is not set
CONFIG_PPC_4K_PAGES=y
CONFIG_SCHED_SMT=y
CONFIG_PM=y
--
2.43.0
Patches currently in stable-queue which might be from geoff@xxxxxxxxxxxxx are
queue-6.6/powerpc-ps3_defconfig-disable-ppc64_big_endian_elf_abi_v2.patch
