# 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/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version
# < git log --format=%s --max-count=1 f5b7769eb0400ec5217a47e41148a9f816ca1f9f
# < make -s -j 8 ARCH=powerpc O=/kisskb/build/linus_ppc44x_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  ppc44x_defconfig
# make -s -j 8 ARCH=powerpc O=/kisskb/build/linus_ppc44x_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  
/kisskb/src/net/Makefile:24: CC cannot link executables. Skipping bpfilter.
<stdin>:1332:2: warning: #warning syscall io_pgetevents not implemented [-Wcpp]
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:183:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/Makefile:24: CC cannot link executables. Skipping bpfilter.
/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:340:21: note: 'pdeo' was declared here
/kisskb/src/net/bridge/br_netlink.c: In function 'br_afspec':
/kisskb/src/net/bridge/br_netlink.c:637:7: warning: 'err' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/tun.c: In function 'tun_get_user':
/kisskb/src/drivers/net/tun.c:1835:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/tun.c:1745:46: warning: 'linear' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/tty/serial/8250/8250_core.c: In function 'univ8250_release_irq':
/kisskb/src/drivers/tty/serial/8250/8250_core.c:251:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/tty/serial/8250/8250_core.c:231:19: note: 'i' was declared here
arch/powerpc/boot/katmai.dtb: Warning (pci_bridge): /plb/pciex@d00000000: node name is not "pci" or "pcie"
arch/powerpc/boot/katmai.dtb: Warning (pci_bridge): /plb/pciex@d20000000: node name is not "pci" or "pcie"
arch/powerpc/boot/katmai.dtb: Warning (pci_bridge): /plb/pciex@d40000000: node name is not "pci" or "pcie"
arch/powerpc/boot/katmai.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge'
INFO: Uncompressed kernel (size 0x51fa34) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x600000)
INFO: Uncompressed kernel (size 0x51fa34) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x600000)
INFO: Uncompressed kernel (size 0x51fa34) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x600000)
INFO: Uncompressed kernel (size 0x51fa34) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x600000)
INFO: Uncompressed kernel (size 0x51fa34) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x600000)
INFO: Uncompressed kernel (size 0x51fa34) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x600000)
INFO: Uncompressed kernel (size 0x50f388) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x600000)
INFO: Uncompressed kernel (size 0x51fa34) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x600000)
INFO: Uncompressed kernel (size 0x51fa34) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x600000)
INFO: Uncompressed kernel (size 0x51fa34) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x600000)
Image Name:   Linux-4.17.0-gf5b7769e
Created:      Wed Jun 13 17:07:47 2018
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    2573453 Bytes = 2513.14 kB = 2.45 MB
Load Address: 00000000
Entry Point:  00000000
INFO: Uncompressed kernel (size 0x51fa34) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x600000)
Image Name:   Linux-4.17.0-gf5b7769e
Created:      Wed Jun 13 17:07:47 2018
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    2599212 Bytes = 2538.29 kB = 2.48 MB
Load Address: 00600000
Entry Point:  0060110c
Image Name:   Linux-4.17.0-gf5b7769e
Created:      Wed Jun 13 17:07:47 2018
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    2599117 Bytes = 2538.20 kB = 2.48 MB
Load Address: 00600000
Entry Point:  00601114
INFO: Uncompressed kernel (size 0x51fa34) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0x600000)
Image Name:   Linux-4.17.0-gf5b7769e
Created:      Wed Jun 13 17:07:47 2018
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    2599206 Bytes = 2538.29 kB = 2.48 MB
Load Address: 00600000
Entry Point:  006000a4
Image Name:   Linux-4.17.0-gf5b7769e
Created:      Wed Jun 13 17:07:47 2018
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    2599203 Bytes = 2538.28 kB = 2.48 MB
Load Address: 00600000
Entry Point:  0060110c
Image Name:   Linux-4.17.0-gf5b7769e
Created:      Wed Jun 13 17:07:47 2018
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    2599241 Bytes = 2538.32 kB = 2.48 MB
Load Address: 00600000
Entry Point:  00600178
Image Name:   Linux-4.17.0-gf5b7769e
Created:      Wed Jun 13 17:07:48 2018
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    2599268 Bytes = 2538.35 kB = 2.48 MB
Load Address: 00600000
Entry Point:  006010f4
Image Name:   Linux-4.17.0-gf5b7769e
Created:      Wed Jun 13 17:07:48 2018
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    2599238 Bytes = 2538.32 kB = 2.48 MB
Load Address: 00600000
Entry Point:  00601104
Image Name:   Linux-4.17.0-gf5b7769e
Created:      Wed Jun 13 17:07:48 2018
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    2599148 Bytes = 2538.23 kB = 2.48 MB
Load Address: 00600000
Entry Point:  00601100
Image Name:   Linux-4.17.0-gf5b7769e
Created:      Wed Jun 13 17:07:48 2018
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    2599189 Bytes = 2538.27 kB = 2.48 MB
Load Address: 00600000
Entry Point:  00601118
Completed OK
# rm -rf /kisskb/build/linus_ppc44x_defconfig_powerpc
# Build took: 0:01:02.604228