# git rev-parse -q --verify 8bd72f8f7c64c22a621801a76c9423932844e014^{commit}
8bd72f8f7c64c22a621801a76c9423932844e014
already have revision, skipping fetch
# git checkout -q -f -B kisskb 8bd72f8f7c64c22a621801a76c9423932844e014
# git clean -qxdf
# < git log -1
# commit 8bd72f8f7c64c22a621801a76c9423932844e014
# Author: Mauricio Faria de Oliveira <mauricfo@linux.vnet.ibm.com>
# Date:   Fri Mar 30 14:28:25 2018 -0300
# 
#     powerpc/pseries: Restore default security feature flags on setup
#     
#     After migration the security feature flags might have changed (e.g.,
#     destination system with unpatched firmware), but some flags are not
#     set/clear again in init_cpu_char_feature_flags() because it assumes
#     the security flags to be the defaults.
#     
#     Additionally, if the H_GET_CPU_CHARACTERISTICS hypercall fails then
#     init_cpu_char_feature_flags() does not run again, which potentially
#     might leave the system in an insecure or sub-optimal configuration.
#     
#     So, just restore the security feature flags to the defaults assumed
#     by init_cpu_char_feature_flags() so it can set/clear them correctly,
#     and to ensure safe settings are in place in case the hypercall fail.
#     
#     Fixes: f636c14790ea ("powerpc/pseries: Set or clear security feature flags")
#     Depends-on: 19887d6a28e2 ("powerpc: Move default security feature flags")
#     Signed-off-by: Mauricio Faria de Oliveira <mauricfo@linux.vnet.ibm.com>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version
# < git log --format=%s --max-count=1 8bd72f8f7c64c22a621801a76c9423932844e014
# < make -s -j 40 ARCH=powerpc O=/kisskb/build/powerpc-next_pasemi_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  pasemi_defconfig
# make -s -j 40 ARCH=powerpc O=/kisskb/build/powerpc-next_pasemi_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  
/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/kernel/rcu/srcutree.c: In function 'init_srcu_struct_fields':
/kisskb/src/kernel/rcu/srcutree.c:146:32: warning: 'levelspread[<U50a0>]' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/kernel/rcu/srcutree.c:94:6: note: 'levelspread[<U50a0>]' was declared here
/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]
/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/fs/nfsd/nfs4xdr.c: In function 'nfsd4_encode_components_esc':
/kisskb/src/fs/nfsd/nfs4xdr.c:2043:9: warning: 'str' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/tty/serial/8250/8250_core.c: In function 'univ8250_release_irq':
/kisskb/src/drivers/tty/serial/8250/8250_core.c:251:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/tty/serial/8250/8250_core.c:231:19: note: 'i' was declared here
WARNING: modpost: Found 2 section mismatch(es).
To see full details build your kernel with:
'make CONFIG_DEBUG_SECTION_MISMATCH=y'
Completed OK
# rm -rf /kisskb/build/powerpc-next_pasemi_defconfig_powerpc
# Build took: 0:00:38.509751