# git rev-parse -q --verify a41426c5f97c5492ce7988d729dd65e592b86f6f^{commit}
a41426c5f97c5492ce7988d729dd65e592b86f6f
already have revision, skipping fetch
# git checkout -q -f -B kisskb a41426c5f97c5492ce7988d729dd65e592b86f6f
# git clean -qxdf
# < git log -1
# commit a41426c5f97c5492ce7988d729dd65e592b86f6f
# Author: Christophe Leroy <christophe.leroy@c-s.fr>
# Date:   Fri Apr 17 11:58:36 2020 +0000
# 
#     powerpc/mm: Fix CONFIG_PPC_KUAP_DEBUG on PPC32
#     
#     CONFIG_PPC_KUAP_DEBUG is not selectable because it depends on PPC_32
#     which doesn't exists.
#     
#     Fixing it leads to a deadlock due to a vital register getting
#     clobbered in _switch().
#     
#     Change dependency to PPC32 and use r0 instead of r4 in _switch()
#     
#     Fixes: e2fb9f544431 ("powerpc/32: Prepare for Kernel Userspace Access Protection")
#     Cc: stable@vger.kernel.org # v5.2+
#     Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/540242f7d4573f7cdf1b3bf46bb35f743b2cd68f.1587124651.git.christophe.leroy@c-s.fr
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-ld --version
# < git log --format=%s --max-count=1 a41426c5f97c5492ce7988d729dd65e592b86f6f
# < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_44x_redwood_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  44x/redwood_defconfig
# < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_44x_redwood_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  help
# make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_44x_redwood_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  olddefconfig
# make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_44x_redwood_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  
/kisskb/src/fs/proc/inode.c: In function 'proc_reg_open':
/kisskb/src/include/linux/list.h:72:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/proc/inode.c:471:21: note: 'pdeo' was declared here
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:204:16: warning: 'old' 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:247:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/tty/serial/8250/8250_core.c:227:19: note: 'i' was declared here
/kisskb/src/fs/namei.c: In function 'handle_dots':
/kisskb/src/fs/namei.c:1805:10: warning: 'inode' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/namei.c:1805:10: warning: 'seq' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/io_uring.c: In function '__io_sqe_files_update.isra.94':
/kisskb/src/fs/io_uring.c:6701:13: warning: 'err' may be used uninitialized in this function [-Wuninitialized]
Completed OK
# rm -rf /kisskb/build/powerpc-fixes_44x_redwood_defconfig_powerpc-gcc4.6
# Build took: 0:00:34.690159