# git rev-parse -q --verify a02cbc7ffe529ed58b6bbe54652104fc2c88bd77^{commit}
a02cbc7ffe529ed58b6bbe54652104fc2c88bd77
already have revision, skipping fetch
# git checkout -q -f -B kisskb a02cbc7ffe529ed58b6bbe54652104fc2c88bd77
# git clean -qxdf
# < git log -1
# commit a02cbc7ffe529ed58b6bbe54652104fc2c88bd77
# Author: Michael Ellerman <mpe@ellerman.id.au>
# Date:   Mon Oct 14 13:30:43 2019 +1100
# 
#     selftests/powerpc: Fixup clobbers for TM tests
#     
#     Some of our TM (Transactional Memory) tests, list "r1" (the stack
#     pointer) as a clobbered register.
#     
#     GCC >= 9 doesn't accept this, and the build breaks:
#     
#       ptrace-tm-spd-tar.c: In function 'tm_spd_tar':
#       ptrace-tm-spd-tar.c:31:2: error: listing the stack pointer register 'r1' in a clobber list is deprecated [-Werror=deprecated]
#          31 |  asm __volatile__(
#             |  ^~~
#       ptrace-tm-spd-tar.c:31:2: note: the value of the stack pointer after an 'asm' statement must be the same as it was before the statement
#     
#     We do have some fairly large inline asm blocks in these tests, and
#     some of them do change the value of r1. However they should all return
#     to C with the value in r1 restored, so I think it's legitimate to say
#     r1 is not clobbered.
#     
#     As Segher points out, the r1 clobbers may have been added because of
#     the use of `or 1,1,1`, however that doesn't actually clobber r1.
#     
#     Segher also points out that some of these tests do clobber LR, because
#     they call functions, and that is not listed in the clobbers, so add
#     that where appropriate.
#     
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
#     Link: https://lore.kernel.org/r/20191029095324.14669-1-mpe@ellerman.id.au
# < /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 a02cbc7ffe529ed58b6bbe54652104fc2c88bd77
# < make -s -j 32 ARCH=powerpc O=/kisskb/build/powerpc-next-rand_powerpc-randconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  randconfig
KCONFIG_SEED=0x8843B1B8
# Added to kconfig CONFIG_STANDALONE=y
# Added to kconfig CONFIG_BUILD_DOCSRC=n
# Added to kconfig CONFIG_MODULE_SIG=n
# Added to kconfig CONFIG_CPU_BIG_ENDIAN=y
# Added to kconfig CONFIG_PPC64=y
# Added to kconfig CONFIG_PPC_DISABLE_WERROR=y
# Added to kconfig CONFIG_SECTION_MISMATCH_WARN_ONLY=y
# Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y
# Added to kconfig CONFIG_CC_STACKPROTECTOR_STRONG=n
# Added to kconfig CONFIG_GCC_PLUGINS=n
# Added to kconfig CONFIG_LD_HEAD_STUB_CATCH=y
# Added to kconfig CONFIG_TRIM_UNUSED_KSYMS=n
# Added to kconfig CONFIG_UBSAN=n
# yes \n | make -s -j 32 ARCH=powerpc O=/kisskb/build/powerpc-next-rand_powerpc-randconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  oldconfig
yes: standard output: Broken pipe
# make -s -j 32 ARCH=powerpc O=/kisskb/build/powerpc-next-rand_powerpc-randconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  
/kisskb/src/kernel/rcu/srcutree.c: In function 'init_srcu_struct_nodes':
/kisskb/src/kernel/rcu/srcutree.c:121:34: warning: 'levelspread[<U4a00>]' 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:204:16: warning: 'old' 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:1852:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/base/regmap/regmap.c: In function 'regmap_raw_read':
/kisskb/src/drivers/base/regmap/regmap.c:2591:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/f2fs/file.c: In function 'f2fs_precache_extents':
/kisskb/src/fs/f2fs/file.c:3095:6: warning: 'err' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/f2fs/node.c: In function '__set_nat_cache_dirty':
/kisskb/src/include/linux/list.h:63:13: warning: 'head' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/f2fs/node.c:236:24: note: 'head' was declared here
/kisskb/src/fs/f2fs/segment.c: In function 'f2fs_flush_sit_entries':
/kisskb/src/fs/f2fs/segment.c:3892:5: warning: array subscript is below array bounds [-Warray-bounds]
/kisskb/src/fs/proc/inode.c: In function 'proc_reg_open':
/kisskb/src/include/linux/list.h:65:12: 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/fs/udf/unicode.c: In function 'udf_name_conv_char':
/kisskb/src/fs/udf/unicode.c:132:8: warning: 'c' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/clk/sunxi-ng/ccu_mux.c: In function 'ccu_mux_helper_determine_rate':
/kisskb/src/drivers/clk/sunxi-ng/ccu_mux.c:150:22: warning: 'best_parent' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/iommu/fsl_pamu_domain.c: In function 'map_subwins':
/kisskb/src/drivers/iommu/fsl_pamu_domain.c:90:9: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/i2c/busses/i2c-sh_mobile.c: In function 'sh_mobile_i2c_isr_rx':
/kisskb/src/drivers/i2c/busses/i2c-sh_mobile.c:399:26: warning: 'data' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/soc/qcom/rpmh.c: In function 'rpmh_write_batch':
/kisskb/src/drivers/soc/qcom/rpmh.c:355:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/usb/core/devio.c: In function 'async_completed':
/kisskb/src/drivers/usb/core/devio.c:625:23: warning: 'errno' may be used uninitialized in this function [-Wuninitialized]
WARNING: vmlinux.o(.text+0x43ab0): Section mismatch in reference from the function .fsl_add_bridge() to the function .init.text:.setup_pci_cmd()
The function .fsl_add_bridge() references
the function __init .setup_pci_cmd().
This is often because .fsl_add_bridge lacks a __init 
annotation or the annotation of .setup_pci_cmd is wrong.

WARNING: vmlinux.o (.PPC.EMB.apuinfo): unexpected non-allocatable section.
Did you forget to use "ax"/"aw" in a .S file?
Note that for example <linux/init.h> contains
section definitions for use in .S files.

/kisskb/src/arch/powerpc/boot/decompress.c: In function 'partial_decompress':
/kisskb/src/arch/powerpc/boot/decompress.c:133:2: warning: implicit declaration of function '__decompress' [-Wimplicit-function-declaration]
INFO: Uncompressed kernel (size 0x21edac0) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x2200000)
Image Name:   Linux-5.4.0-rc2+
Created:      Wed Oct 30 02:53:51 2019
Image Type:   PowerPC Linux Kernel Image (lzo compressed)
Data Size:    13848653 Bytes = 13524.08 KiB = 13.21 MiB
Load Address: 00000000
Entry Point:  00000000
Completed OK
# rm -rf /kisskb/build/powerpc-next-rand_powerpc-randconfig_powerpc-gcc4.6
# Build took: 0:02:44.167438