# 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/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-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-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  randconfig
KCONFIG_SEED=0xCD435020
# 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-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  oldconfig
yes: standard output: Broken pipe
# make -s -j 10 ARCH=powerpc O=/kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc5 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-5.5.0-nolibc/powerpc64-linux/bin/powerpc64-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]
In file included from /kisskb/src/arch/powerpc/xmon/xmon.c:67:0:
/kisskb/src/arch/powerpc/xmon/dis-asm.h: In function 'print_insn_powerpc':
/kisskb/src/arch/powerpc/xmon/dis-asm.h:20:9: warning: format '%x' expects argument of type 'unsigned int', but argument 2 has type 'long unsigned int' [-Wformat=]
  printf("%.8x", insn);
         ^
/kisskb/src/arch/powerpc/xmon/dis-asm.h: In function 'print_insn_spu':
/kisskb/src/arch/powerpc/xmon/dis-asm.h:26:9: warning: format '%x' expects argument of type 'unsigned int', but argument 2 has type 'long unsigned int' [-Wformat=]
  printf("%.8x", insn);
         ^
WARNING: 4 bad relocations
c00000000001e9c6 R_PPC64_ADDR16_HIGHEST  .head.text+0x000000000001e9e0
c00000000001e9ca R_PPC64_ADDR16_HIGHER  .head.text+0x000000000001e9e0
c00000000001e9d2 R_PPC64_ADDR16_HIGH  .head.text+0x000000000001e9e0
c00000000001e9d6 R_PPC64_ADDR16_LO  .head.text+0x000000000001e9e0
INFO: Uncompressed kernel (size 0x29162b0) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x2a00000)
Image Name:   Linux-5.1.0-rc4-gfcf88917dd43
Created:      Mon Apr  8 16:04:53 2019
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    13023346 Bytes = 12718.11 KiB = 12.42 MiB
Load Address: 00000000
Entry Point:  00000000
Completed OK
# rm -rf /kisskb/build/linus-rand_powerpc-randconfig_powerpc-gcc5
# Build took: 0:03:12.889874