# git rev-parse -q --verify fcf88917dd435c6a4cb2830cb086ee58605a1d85^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/linus master
error: The last gc run reported the following. Please correct the root cause
and remove .git/gc.log.
Automatic cleanup will not be performed until the file is removed.

warning: There are too many unreachable loose objects; run 'git prune' to remove them.

# git rev-parse -q --verify fcf88917dd435c6a4cb2830cb086ee58605a1d85^{commit}
fcf88917dd435c6a4cb2830cb086ee58605a1d85
# git checkout -q -f -B kisskb fcf88917dd435c6a4cb2830cb086ee58605a1d85
# git clean -qxdf
# < git log -1
# commit fcf88917dd435c6a4cb2830cb086ee58605a1d85
# Author: Qian Cai <cai@lca.pw>
# Date:   Sat Apr 6 18:59:01 2019 -0400
# 
#     slab: fix a crash by reading /proc/slab_allocators
#     
#     The commit 510ded33e075 ("slab: implement slab_root_caches list")
#     changes the name of the list node within "struct kmem_cache" from "list"
#     to "root_caches_node", but leaks_show() still use the "list" which
#     causes a crash when reading /proc/slab_allocators.
#     
#     You need to have CONFIG_SLAB=y and CONFIG_MEMCG=y to see the problem,
#     because without MEMCG all slab caches are root caches, and the "list"
#     node happens to be the right one.
#     
#     Fixes: 510ded33e075 ("slab: implement slab_root_caches list")
#     Signed-off-by: Qian Cai <cai@lca.pw>
#     Reviewed-by: Tobin C. Harding <tobin@kernel.org>
#     Cc: Tejun Heo <tj@kernel.org>
#     Cc: Andrew Morton <akpm@linux-foundation.org>
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /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 fcf88917dd435c6a4cb2830cb086ee58605a1d85
# < make -s -j 10 ARCH=powerpc O=/kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  randconfig
KCONFIG_SEED=0xA56AAF8C
# 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 
# yes \n | make -s -j 10 ARCH=powerpc O=/kisskb/build/linus-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 10 ARCH=powerpc O=/kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  
<stdin>:1478:2: warning: #warning syscall pidfd_send_signal not implemented [-Wcpp]
<stdin>:1481:2: warning: #warning syscall io_uring_setup not implemented [-Wcpp]
<stdin>:1484:2: warning: #warning syscall io_uring_enter not implemented [-Wcpp]
<stdin>:1487:2: warning: #warning syscall io_uring_register not implemented [-Wcpp]
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:187:16: 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:1855:6: 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:2594:6: warning: 'ret' 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:65:12: warning: 'pdeo' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/proc/inode.c:337:21: note: 'pdeo' was declared here
/kisskb/src/fs/ocfs2/alloc.c: In function 'ocfs2_trim_mainbm':
/kisskb/src/fs/ocfs2/alloc.c:7604:17: warning: 'first_bit' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/core/devlink.c: In function 'devlink_fmsg_prepare_skb':
/kisskb/src/net/core/devlink.c:4304:6: warning: 'err' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c: In function 'amdgpu_set_pp_od_clk_voltage':
/kisskb/src/drivers/gpu/drm/amd/amdgpu/amdgpu_pm.c:593:5: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/i2c/i2c-core-base.c: In function 'i2c_generic_scl_recovery':
/kisskb/src/drivers/i2c/i2c-core-base.c:235:5: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/gpu/drm/amd/amdgpu/soc15.c: In function 'soc15_set_ip_blocks':
/kisskb/src/drivers/gpu/drm/amd/amdgpu/soc15.c:613:3: warning: #warning "Enable CONFIG_DRM_AMD_DC for display support on SOC15." [-Wcpp]
/kisskb/src/drivers/gpu/drm/amd/amdgpu/soc15.c:635:3: warning: #warning "Enable CONFIG_DRM_AMD_DC for display support on SOC15." [-Wcpp]
/kisskb/src/drivers/mfd/arizona-core.c: In function 'arizona_dev_init':
/kisskb/src/drivers/mfd/arizona-core.c:1422:6: warning: 'n_subdevs' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/media/usb/dvb-usb/pctv452e.c:1102:1: internal compiler error: in function_and_variable_visibility, at ipa.c:929
Please submit a full bug report,
with preprocessed source if appropriate.
See <http://gcc.gnu.org/bugs.html> for instructions.
make[5]: *** [/kisskb/src/scripts/Makefile.build:276: drivers/media/usb/dvb-usb/pctv452e.o] Error 1
make[5]: *** Waiting for unfinished jobs....
make[4]: *** [/kisskb/src/scripts/Makefile.build:486: drivers/media/usb/dvb-usb] Error 2
make[4]: *** Waiting for unfinished jobs....
make[3]: *** [/kisskb/src/scripts/Makefile.build:486: drivers/media/usb] Error 2
make[2]: *** [/kisskb/src/scripts/Makefile.build:486: drivers/media] Error 2
make[2]: *** Waiting for unfinished jobs....
/kisskb/src/drivers/gpu/drm/nouveau/nvkm/subdev/top/gk104.c: In function 'gk104_top_oneinit':
/kisskb/src/drivers/gpu/drm/nouveau/nvkm/subdev/top/gk104.c:104:1: warning: 'inst' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/gpu/drm/nouveau/nvkm/subdev/top/gk104.c:104:1: warning: 'type' may be used uninitialized in this function [-Wuninitialized]
make[1]: *** [/kisskb/src/Makefile:1051: drivers] Error 2
make: *** [Makefile:169: sub-make] Error 2
Command 'make -s -j 10 ARCH=powerpc O=/kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc4.6 CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc4.6
# Build took: 0:05:44.241720