# 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 # 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 # Cc: Wanpeng Li # Cc: Greg Kroah-Hartman # Cc: Thomas Richter # Cc: Kees Cook # Signed-off-by: Linus Torvalds # < /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 48 ARCH=powerpc O=/kisskb/build/linus_ppc6xx_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- ppc6xx_defconfig # make -s -j 48 ARCH=powerpc O=/kisskb/build/linus_ppc6xx_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. :1332:2: warning: #warning syscall io_pgetevents not implemented [-Wcpp] /kisskb/src/kernel/cgroup/cgroup-v1.c: In function 'cgroup1_mount': /kisskb/src/kernel/cgroup/cgroup-v1.c:1256:20: warning: 'root' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/net/Makefile:24: CC cannot link executables. Skipping bpfilter. /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/drivers/base/regmap/regmap.c: In function 'regmap_raw_read': /kisskb/src/drivers/base/regmap/regmap.c:2497:6: warning: 'ret' 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:1819:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/dma-buf/reservation.c: In function 'reservation_object_add_shared_fence': /kisskb/src/drivers/dma-buf/reservation.c:225:6: warning: 'k' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/sound/ppc/awacs.c: In function 'snd_pmac_awacs_init': /kisskb/src/include/sound/control.h:223:2: warning: 'speaker_vol' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/sound/ppc/awacs.c:886:36: note: 'speaker_vol' 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/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/fs/nfsd/nfs4xdr.c: In function 'nfsd4_encode_components_esc': /kisskb/src/fs/nfsd/nfs4xdr.c:2043:9: warning: 'str' may be used uninitialized in this function [-Wuninitialized] /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/net/mac80211/mlme.c: In function 'ieee80211_rx_mgmt_beacon': /kisskb/src/net/mac80211/mlme.c:1353:3: warning: 'pwr_level_cisco' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/net/mac80211/mlme.c:1310:6: note: 'pwr_level_cisco' was declared here /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/mpc832x_rdb.dtb: Warning (interrupts_property): /qe@e0100000/mdio@3120/ethernet-phy@0:#interrupt-cells: size is (4), expected multiple of 8 arch/powerpc/boot/mpc832x_rdb.dtb: Warning (interrupts_property): /qe@e0100000/mdio@3120/ethernet-phy@4:#interrupt-cells: size is (4), expected multiple of 8 INFO: Uncompressed kernel (size 0xa4b564) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa4b564) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa4b564) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa4b564) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa4b564) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa4b564) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa4b564) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa4b564) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa3ae40) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa4b564) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa3ae40) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) INFO: Uncompressed kernel (size 0xa4b564) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xb00000) Image Name: Linux-4.17.0+ Created: Wed Jun 13 18:40:23 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 4869752 Bytes = 4755.62 kB = 4.64 MB Load Address: 00000000 Entry Point: 00000000 Image Name: Linux-4.17.0+ Created: Wed Jun 13 18:40:24 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 4893327 Bytes = 4778.64 kB = 4.67 MB Load Address: 00b00000 Entry Point: 00b00230 Image Name: Linux-4.17.0+ Created: Wed Jun 13 18:40:24 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 4893458 Bytes = 4778.77 kB = 4.67 MB Load Address: 00b00000 Entry Point: 00b00230 Image Name: Linux-4.17.0+ Created: Wed Jun 13 18:40:24 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 4894315 Bytes = 4779.60 kB = 4.67 MB Load Address: 00b00000 Entry Point: 00b00230 Image Name: Linux-4.17.0+ Created: Wed Jun 13 18:40:24 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 4894606 Bytes = 4779.89 kB = 4.67 MB Load Address: 00b00000 Entry Point: 00b007a0 Image Name: Linux-4.17.0+ Created: Wed Jun 13 18:40:24 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 4893414 Bytes = 4778.72 kB = 4.67 MB Load Address: 00b00000 Entry Point: 00b00230 Image Name: Linux-4.17.0+ Created: Wed Jun 13 18:40:24 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 4893450 Bytes = 4778.76 kB = 4.67 MB Load Address: 00b00000 Entry Point: 00b00230 Image Name: Linux-4.17.0+ Created: Wed Jun 13 18:40:24 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 4894238 Bytes = 4779.53 kB = 4.67 MB Load Address: 00b00000 Entry Point: 00b007a0 Image Name: Linux-4.17.0+ Created: Wed Jun 13 18:40:24 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 4893241 Bytes = 4778.56 kB = 4.67 MB Load Address: 00b00000 Entry Point: 00b00230 Completed OK # rm -rf /kisskb/build/linus_ppc6xx_defconfig_powerpc # Build took: 0:03:28.618232