# 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-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-gcc --version
# < git log --format=%s --max-count=1 f5b7769eb0400ec5217a47e41148a9f816ca1f9f
# < make -s -j 10 ARCH=sparc O=/kisskb/build/linus_sparc-allmodconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-  allmodconfig
# Added to kconfig CONFIG_64BIT=n
# Added to kconfig CONFIG_BUILD_DOCSRC=n
# Added to kconfig CONFIG_HAVE_FTRACE_MCOUNT_RECORD=n
# Added to kconfig CONFIG_SAMPLES=n
# Added to kconfig CONFIG_MODULE_SIG=n
# yes \n | make -s -j 10 ARCH=sparc O=/kisskb/build/linus_sparc-allmodconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-  oldconfig
yes: standard output: Broken pipe
yes: write error
# make -s -j 10 ARCH=sparc O=/kisskb/build/linus_sparc-allmodconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-  
<stdin>:1332:2: warning: #warning syscall io_pgetevents not implemented [-Wcpp]
<stdin>:1335:2: warning: #warning syscall rseq not implemented [-Wcpp]
In file included from /kisskb/src/arch/sparc/include/asm/cacheflush.h:11:0,
                 from /kisskb/src/drivers/android/binder.c:54:
/kisskb/src/arch/sparc/include/asm/cacheflush_32.h:40:37: warning: 'struct page' declared inside parameter list
 void sparc_flush_page_to_ram(struct page *page);
                                     ^
/kisskb/src/arch/sparc/include/asm/cacheflush_32.h:40:37: warning: its scope is only this definition or declaration, which is probably not what you want
In file included from /kisskb/src/arch/sparc/include/asm/cacheflush.h:11:0,
                 from /kisskb/src/drivers/android/binder_alloc.c:20:
/kisskb/src/arch/sparc/include/asm/cacheflush_32.h:40:37: warning: 'struct page' declared inside parameter list
 void sparc_flush_page_to_ram(struct page *page);
                                     ^
/kisskb/src/arch/sparc/include/asm/cacheflush_32.h:40:37: warning: its scope is only this definition or declaration, which is probably not what you want
/kisskb/src/drivers/ata/pata_ali.c: In function 'ali_init_chipset':
/kisskb/src/drivers/ata/pata_ali.c:469:38: error: implicit declaration of function 'pci_domain_nr' [-Werror=implicit-function-declaration]
  north = pci_get_domain_bus_and_slot(pci_domain_nr(pdev->bus), 0,
                                      ^
cc1: some warnings being treated as errors
/kisskb/src/scripts/Makefile.build:323: recipe for target 'drivers/ata/pata_ali.o' failed
make[3]: *** [drivers/ata/pata_ali.o] Error 1
/kisskb/src/scripts/Makefile.build:558: recipe for target 'drivers/ata' failed
make[2]: *** [drivers/ata] Error 2
/kisskb/src/Makefile:1072: recipe for target 'drivers' failed
make[1]: *** [drivers] Error 2
make[1]: *** Waiting for unfinished jobs....
In file included from /kisskb/src/arch/sparc/include/asm/cmpxchg.h:7:0,
                 from /kisskb/src/arch/sparc/include/asm/atomic_32.h:17,
                 from /kisskb/src/arch/sparc/include/asm/atomic.h:7,
                 from /kisskb/src/include/linux/atomic.h:5,
                 from /kisskb/src/arch/sparc/include/asm/smp_32.h:25,
                 from /kisskb/src/arch/sparc/include/asm/smp.h:7,
                 from /kisskb/src/arch/sparc/include/asm/switch_to_32.h:5,
                 from /kisskb/src/arch/sparc/include/asm/switch_to.h:7,
                 from /kisskb/src/arch/sparc/include/asm/ptrace.h:120,
                 from /kisskb/src/arch/sparc/include/asm/thread_info_32.h:19,
                 from /kisskb/src/arch/sparc/include/asm/thread_info.h:7,
                 from /kisskb/src/include/linux/thread_info.h:38,
                 from /kisskb/src/include/asm-generic/preempt.h:5,
                 from ./arch/sparc/include/generated/asm/preempt.h:1,
                 from /kisskb/src/include/linux/preempt.h:81,
                 from /kisskb/src/include/linux/spinlock.h:51,
                 from /kisskb/src/include/linux/wait.h:9,
                 from /kisskb/src/include/linux/wait_bit.h:8,
                 from /kisskb/src/include/linux/fs.h:6,
                 from /kisskb/src/fs/ocfs2/file.c:27:
/kisskb/src/fs/ocfs2/file.c: In function 'ocfs2_file_write_iter':
/kisskb/src/arch/sparc/include/asm/cmpxchg_32.h:28:22: warning: value computed is not used [-Wunused-value]
 #define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
                      ^
/kisskb/src/fs/ocfs2/file.c:2386:3: note: in expansion of macro 'xchg'
   xchg(&iocb->ki_complete, saved_ki_complete);
   ^
Makefile:146: recipe for target 'sub-make' failed
make: *** [sub-make] Error 2
Command 'make -s -j 10 ARCH=sparc O=/kisskb/build/linus_sparc-allmodconfig_sparc64 CROSS_COMPILE=/opt/cross/kisskb/br-sparc64-full-2016.08-613-ge98b4dd/bin/sparc64-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/linus_sparc-allmodconfig_sparc64
# Build took: 0:03:56.613139