# git rev-parse -q --verify f5b7769eb0400ec5217a47e41148a9f816ca1f9f^{commit}
f5b7769eb0400ec5217a47e41148a9f816ca1f9f
already have revision, skipping fetch
# git checkout -q -f -B kisskb f5b7769eb0400ec5217a47e41148a9f816ca1f9f
# git clean -qxdf
# < git log -1
# commit f5b7769eb0400ec5217a47e41148a9f816ca1f9f
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Tue Jun 12 20:52:16 2018 -0700
# 
#     Revert "debugfs: inode: debugfs_create_dir uses mode permission from parent"
#     
#     This reverts commit 95cde3c59966f6371b6bcd9e4e2da2ba64ee9775.
#     
#     The commit had good intentions, but it breaks kvm-tool and qemu-kvm.
#     
#     With it in place, "lkvm run" just fails with
#     
#       Error: KVM_CREATE_VM ioctl
#       Warning: Failed init: kvm__init
#     
#     which isn't a wonderful error message, but bisection pinpointed the
#     problematic commit.
#     
#     The problem is almost certainly due to the special kvm debugfs entries
#     created dynamically by kvm under /sys/kernel/debug/kvm/.  See
#     kvm_create_vm_debugfs()
#     
#     Bisected-and-reported-by: Linus Torvalds <torvalds@linux-foundation.org>
#     Cc: Wanpeng Li <kernellwp@gmail.com>
#     Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
#     Cc: Thomas Richter <tmricht@linux.ibm.com>
#     Cc: Kees Cook <keescook@chromium.org>
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /opt/cross/kisskb/br-mipsel-o32-full-2016.08-613-ge98b4dd/bin/mipsel-linux-gcc --version
# < git log --format=%s --max-count=1 f5b7769eb0400ec5217a47e41148a9f816ca1f9f
# < make -s -j 48 ARCH=mips O=/kisskb/build/linus_mips-allmodconfig_mipsel CROSS_COMPILE=/opt/cross/kisskb/br-mipsel-o32-full-2016.08-613-ge98b4dd/bin/mipsel-linux-  allmodconfig
# Added to kconfig CONFIG_BUILD_DOCSRC=n
# Added to kconfig CONFIG_MODULE_SIG=n
# Added to kconfig CONFIG_SAMPLES=n
# Added to kconfig CONFIG_MIPS_CPS_NS16550_BASE=0x1b0003f8
# Added to kconfig CONFIG_MIPS_CPS_NS16550_SHIFT=0
# Added to kconfig 
# yes \n | make -s -j 48 ARCH=mips O=/kisskb/build/linus_mips-allmodconfig_mipsel CROSS_COMPILE=/opt/cross/kisskb/br-mipsel-o32-full-2016.08-613-ge98b4dd/bin/mipsel-linux-  oldconfig
yes: standard output: Broken pipe
yes: write error
# make -s -j 48 ARCH=mips O=/kisskb/build/linus_mips-allmodconfig_mipsel CROSS_COMPILE=/opt/cross/kisskb/br-mipsel-o32-full-2016.08-613-ge98b4dd/bin/mipsel-linux-  
<stdin>:1332:2: warning: #warning syscall io_pgetevents not implemented [-Wcpp]
<stdin>:1335:2: warning: #warning syscall rseq not implemented [-Wcpp]
/opt/cross/kisskb/br-mipsel-o32-full-2016.08-613-ge98b4dd/bin/mipsel-linux-ld: net/bpfilter/bpfilter_umh.o: compiled for a little endian system and target is big endian
/opt/cross/kisskb/br-mipsel-o32-full-2016.08-613-ge98b4dd/bin/mipsel-linux-ld: net/bpfilter/bpfilter_umh.o: endianness incompatible with that of the selected emulation
/opt/cross/kisskb/br-mipsel-o32-full-2016.08-613-ge98b4dd/bin/mipsel-linux-ld: failed to merge target specific data of file net/bpfilter/bpfilter_umh.o
/kisskb/src/scripts/Makefile.build:530: recipe for target 'net/bpfilter/bpfilter.o' failed
make[3]: *** [net/bpfilter/bpfilter.o] Error 1
/kisskb/src/scripts/Makefile.build:558: recipe for target 'net/bpfilter' failed
make[2]: *** [net/bpfilter] Error 2
make[2]: *** Waiting for unfinished jobs....
/kisskb/src/Makefile:1072: recipe for target 'net' failed
make[1]: *** [net] Error 2
make[1]: *** Waiting for unfinished jobs....
/kisskb/src/drivers/input/joystick/analog.c:176:2: warning: #warning Precise timer not defined for this architecture. [-Wcpp]
 #warning Precise timer not defined for this architecture.
  ^
/kisskb/src/drivers/spi/spi-sh-msiof.c:77:0: warning: "STR" redefined
 #define STR 0x40 /* Status Register */
 ^
In file included from /kisskb/src/arch/mips/include/asm/mach-generic/spaces.h:15:0,
                 from /kisskb/src/arch/mips/include/asm/addrspace.h:13,
                 from /kisskb/src/arch/mips/include/asm/barrier.h:11,
                 from /kisskb/src/include/linux/compiler.h:245,
                 from /kisskb/src/arch/mips/include/asm/bitops.h:16,
                 from /kisskb/src/include/linux/bitops.h:38,
                 from /kisskb/src/include/linux/bitmap.h:8,
                 from /kisskb/src/drivers/spi/spi-sh-msiof.c:14:
/kisskb/src/arch/mips/include/asm/mipsregs.h:29:0: note: this is the location of the previous definition
 #define STR(x) __STR(x)
 ^
In file included from /kisskb/src/arch/mips/include/asm/sibyte/sb1250.h:41:0,
                 from /kisskb/src/drivers/watchdog/sb_wdog.c:58:
/kisskb/src/arch/mips/include/asm/sibyte/bcm1480_scd.h:274:0: warning: "M_SPC_CFG_CLEAR" redefined
 #define M_SPC_CFG_CLEAR   M_BCM1480_SPC_CFG_CLEAR
 ^
In file included from /kisskb/src/arch/mips/include/asm/sibyte/sb1250.h:40:0,
                 from /kisskb/src/drivers/watchdog/sb_wdog.c:58:
/kisskb/src/arch/mips/include/asm/sibyte/sb1250_scd.h:405:0: note: this is the location of the previous definition
 #define M_SPC_CFG_CLEAR  _SB_MAKEMASK1(32)
 ^
In file included from /kisskb/src/arch/mips/include/asm/sibyte/sb1250.h:41:0,
                 from /kisskb/src/drivers/watchdog/sb_wdog.c:58:
/kisskb/src/arch/mips/include/asm/sibyte/bcm1480_scd.h:275:0: warning: "M_SPC_CFG_ENABLE" redefined
 #define M_SPC_CFG_ENABLE  M_BCM1480_SPC_CFG_ENABLE
 ^
In file included from /kisskb/src/arch/mips/include/asm/sibyte/sb1250.h:40:0,
                 from /kisskb/src/drivers/watchdog/sb_wdog.c:58:
/kisskb/src/arch/mips/include/asm/sibyte/sb1250_scd.h:406:0: note: this is the location of the previous definition
 #define M_SPC_CFG_ENABLE _SB_MAKEMASK1(33)
 ^
Makefile:146: recipe for target 'sub-make' failed
make: *** [sub-make] Error 2
Command 'make -s -j 48 ARCH=mips O=/kisskb/build/linus_mips-allmodconfig_mipsel CROSS_COMPILE=/opt/cross/kisskb/br-mipsel-o32-full-2016.08-613-ge98b4dd/bin/mipsel-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/linus_mips-allmodconfig_mipsel
# Build took: 0:10:43.299618