# git rev-parse -q --verify 9c1a41149230e5e2d48c8948943306b8c0c9f242^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/linuxppc/linux.git fixes-test
# git rev-parse -q --verify 9c1a41149230e5e2d48c8948943306b8c0c9f242^{commit}
9c1a41149230e5e2d48c8948943306b8c0c9f242
# git checkout -q -f -B kisskb 9c1a41149230e5e2d48c8948943306b8c0c9f242
# git clean -qxdf
# < git log -1
# commit 9c1a41149230e5e2d48c8948943306b8c0c9f242
# Author: Nicholas Piggin <npiggin@gmail.com>
# Date:   Fri Mar 23 15:53:38 2018 +1000
# 
#     powerpc/64s: Fix i-side SLB miss bad address handler saving nonvolatile GPRs
#     
#     The SLB bad address handler's trap number fixup does not preserve the
#     low bit that indicates nonvolatile GPRs have not been saved. This
#     leads save_nvgprs to skip saving them, and subsequent functions and
#     return from interrupt will think they are saved.
#     
#     This causes kernel branch-to-garbage debugging to not have correct
#     registers, can also cause userspace to have its registers clobbered
#     after a segfault.
#     
#     Fixes: f0f558b131 ("powerpc/mm: Preserve CFAR value on SLB miss caused by access to bogus address")
#     Cc: Paul Mackerras <paulus@ozlabs.org>
#     Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version
# < git log --format=%s --max-count=1 9c1a41149230e5e2d48c8948943306b8c0c9f242
# < make -s -j 80 ARCH=x86 O=/kisskb/build/powerpc-fixes_x86_64_defconfig_x86_64 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-  x86_64_defconfig
# make -s -j 80 ARCH=x86 O=/kisskb/build/powerpc-fixes_x86_64_defconfig_x86_64 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/x86_64-linux/bin/x86_64-linux-  
/kisskb/src/arch/x86/kernel/e820.c: In function 'e820__setup_pci_gap':
/kisskb/src/arch/x86/kernel/e820.c:652:2: warning: 'gapstart' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/sound/hda/hdac_regmap.c: In function 'hda_reg_write':
/kisskb/src/sound/hda/hdac_regmap.c:282:16: warning: 'err' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:183:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/mm/vmstat.c: In function 'sysctl_vm_numa_stat_handler':
/kisskb/src/mm/vmstat.c:89:5: warning: 'oldval' may be used uninitialized in this function [-Wuninitialized]
kernel/trace/trace.o: warning: objtool: tracing_start()+0x6f: unreachable instruction
/kisskb/src/kernel/cgroup/cgroup-v1.c: In function 'cgroup1_mount':
/kisskb/src/kernel/cgroup/cgroup-v1.c:1268:20: warning: 'root' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/arch/x86/kernel/apic/io_apic.c: In function 'mp_map_pin_to_irq':
/kisskb/src/arch/x86/kernel/apic/io_apic.c:1033:6: warning: 'irq' may be used uninitialized in this function [-Wuninitialized]
kernel/rcu/tree.o: warning: objtool: rcu_init()+0x1c5: unreachable instruction
/kisskb/src/mm/hugetlb.c: In function 'alloc_pool_huge_page':
/kisskb/src/mm/hugetlb.c:1439:5: warning: 'page' may be used uninitialized in this function [-Wuninitialized]
fs/aio.o: warning: objtool: aio_nr_sub()+0x2d: unreachable instruction
drivers/clk/clk.o: warning: objtool: clk_prepare_unlock()+0x44: unreachable instruction
/kisskb/src/drivers/dma-buf/reservation.c: In function 'reservation_object_add_shared_fence':
/kisskb/src/drivers/dma-buf/reservation.c:207:2: warning: 'k' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/dma-buf/reservation.c:160:17: note: 'k' was declared here
/kisskb/src/net/mac80211/mlme.c: In function 'ieee80211_rx_mgmt_beacon':
/kisskb/src/net/mac80211/mlme.c:1350:3: warning: 'pwr_level_cisco' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/mac80211/mlme.c:1307:6: note: 'pwr_level_cisco' was declared here
Completed OK
# rm -rf /kisskb/build/powerpc-fixes_x86_64_defconfig_x86_64
# Build took: 0:02:05.493724