# git rev-parse -q --verify 8659a0e0efdd975c73355dbc033f79ba3b31e82c^{commit}
8659a0e0efdd975c73355dbc033f79ba3b31e82c
already have revision, skipping fetch
# git checkout -q -f -B kisskb 8659a0e0efdd975c73355dbc033f79ba3b31e82c
# git clean -qxdf
# < git log -1
# commit 8659a0e0efdd975c73355dbc033f79ba3b31e82c
# Author: Michael Ellerman <mpe@ellerman.id.au>
# Date:   Wed May 20 23:36:05 2020 +1000
# 
#     powerpc/64s: Disable STRICT_KERNEL_RWX
#     
#     Several strange crashes have been eventually traced back to
#     STRICT_KERNEL_RWX and its interaction with code patching.
#     
#     Various paths in our ftrace, kprobes and other patching code need to
#     be hardened against patching failures, otherwise we can end up running
#     with partially/incorrectly patched ftrace paths, kprobes or jump
#     labels, which can then cause strange crashes.
#     
#     Although fixes for those are in development, they're not -rc material.
#     
#     There also seem to be problems with the underlying strict RWX logic,
#     which needs further debugging.
#     
#     So for now disable STRICT_KERNEL_RWX on 64-bit to prevent people from
#     enabling the option and tripping over the bugs.
#     
#     Fixes: 1e0fc9d1eb2b ("powerpc/Kconfig: Enable STRICT_KERNEL_RWX for some configs")
#     Cc: stable@vger.kernel.org # v4.13+
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/20200520133605.972649-1-mpe@ellerman.id.au
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version
# < git log --format=%s --max-count=1 8659a0e0efdd975c73355dbc033f79ba3b31e82c
# < make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_pmac32_defconfig+KVM_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  pmac32_defconfig
# Added to kconfig CONFIG_VIRTUALIZATION=y
# Added to kconfig CONFIG_KVM=y
# Added to kconfig CONFIG_KVM_BOOK3S_32=m
# Added to kconfig 
# < make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_pmac32_defconfig+KVM_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  help
# make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_pmac32_defconfig+KVM_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  olddefconfig
.config:4087:warning: override: reassigning to symbol VIRTUALIZATION
# make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_pmac32_defconfig+KVM_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  
/kisskb/src/block/genhd.c: In function 'diskstats_show':
/kisskb/src/block/genhd.c:1617:1: warning: the frame size of 1192 bytes is larger than 1024 bytes [-Wframe-larger-than=]
 }
 ^
In file included from /kisskb/src/sound/ppc/pmac.h:12:0,
                 from /kisskb/src/sound/ppc/awacs.c:16:
/kisskb/src/sound/ppc/awacs.c: In function 'snd_pmac_awacs_init':
/kisskb/src/include/sound/control.h:218:2: warning: 'speaker_vol' may be used uninitialized in this function [-Wmaybe-uninitialized]
  return _snd_ctl_add_slave(master, slave, 0);
  ^
/kisskb/src/sound/ppc/awacs.c:873:36: note: 'speaker_vol' was declared here
  struct snd_kcontrol *master_vol, *speaker_vol;
                                    ^
/kisskb/src/kernel/futex.c: In function 'do_futex':
/kisskb/src/kernel/futex.c:1676:17: warning: 'oldval' may be used uninitialized in this function [-Wmaybe-uninitialized]
   return oldval == cmparg;
                 ^
/kisskb/src/kernel/futex.c:1652:6: note: 'oldval' was declared here
  int oldval, ret;
      ^
/kisskb/src/drivers/gpu/drm/drm_dp_mst_topology.c: In function 'drm_dp_mst_dsc_aux_for_port':
/kisskb/src/drivers/gpu/drm/drm_dp_mst_topology.c:5497:9: warning: missing braces around initializer [-Wmissing-braces]
  struct drm_dp_desc desc = { 0 };
         ^
/kisskb/src/drivers/gpu/drm/drm_dp_mst_topology.c:5497:9: warning: (near initialization for 'desc.ident') [-Wmissing-braces]
ERROR: modpost: "sysrq_mask" [drivers/tty/serial/serial_core.ko] undefined!
make[2]: *** [/kisskb/src/scripts/Makefile.modpost:94: __modpost] Error 1
make[1]: *** [/kisskb/src/Makefile:1319: modules] Error 2
make[1]: *** Waiting for unfinished jobs....
INFO: Uncompressed kernel (size 0x8eb2e4) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x900000)
make: *** [Makefile:180: sub-make] Error 2
Command 'make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_pmac32_defconfig+KVM_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/powerpc-fixes_pmac32_defconfig+KVM_powerpc-gcc4.9
# Build took: 0:01:59.637335