# git rev-parse -q --verify 031d94b0f4799478367ec10babdd755123142ed6^{commit}
031d94b0f4799478367ec10babdd755123142ed6
already have revision, skipping fetch
# git checkout -q -f -B kisskb 031d94b0f4799478367ec10babdd755123142ed6
# git clean -qxdf
# < git log -1
# commit 031d94b0f4799478367ec10babdd755123142ed6
# Author: Christophe Leroy <christophe.leroy@c-s.fr>
# Date:   Fri Jan 24 07:07:54 2020 +0000
# 
#     powerpc/irq: Use current_stack_pointer in do_IRQ()
#     
#     Until commit 7306e83ccf5c ("powerpc: Don't use CURRENT_THREAD_INFO to
#     find the stack"), the current stack base address was obtained by
#     calling current_thread_info(). That inline function was simply masking
#     out the value of r1.
#     
#     In that commit, it was changed to using current_stack_pointer() (since
#     renamed current_stack_frame()), which is a heavier function as it is
#     an outline assembly function which cannot be inlined and which reads
#     the content of the stack at 0(r1).
#     
#     Convert to using current_stack_pointer for geting r1 and masking out
#     its value to obtain the base address of the stack pointer as before.
#     
#     Fixes: 7306e83ccf5c ("powerpc: Don't use CURRENT_THREAD_INFO to find the stack")
#     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/a37e699e7ab897742c07b6838a08af33bc9217e3.1579849665.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 031d94b0f4799478367ec10babdd755123142ed6
# < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_40x_kilauea_defconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  40x/kilauea_defconfig
# make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_40x_kilauea_defconfig_powerpc-gcc4.6 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:204:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/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:338:21: note: 'pdeo' was declared here
/kisskb/src/drivers/tty/serial/8250/8250_core.c: In function 'univ8250_release_irq':
/kisskb/src/drivers/tty/serial/8250/8250_core.c:248:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/tty/serial/8250/8250_core.c:228:19: note: 'i' was declared here
/kisskb/src/drivers/base/regmap/regmap.c: In function 'regmap_raw_read':
/kisskb/src/drivers/base/regmap/regmap.c:2598:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/base/regmap/regmap.c: In function '_regmap_raw_write':
/kisskb/src/drivers/base/regmap/regmap.c:1859:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/io_uring.c: In function '__io_sqe_files_update.isra.81':
/kisskb/src/fs/io_uring.c:5824:13: warning: 'err' may be used uninitialized in this function [-Wuninitialized]
Completed OK
# rm -rf /kisskb/build/powerpc-next_40x_kilauea_defconfig_powerpc-gcc4.6
# Build took: 0:00:39.376011