# git rev-parse -q --verify 716f4aaa7b48a55c73d632d0657b35342b1fefd7^{commit}
716f4aaa7b48a55c73d632d0657b35342b1fefd7
already have revision, skipping fetch
# git checkout -q -f -B kisskb 716f4aaa7b48a55c73d632d0657b35342b1fefd7
# git clean -qxdf
# < git log -1
# commit 716f4aaa7b48a55c73d632d0657b35342b1fefd7
# Merge: 841c35169323 46f5ab762d04
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Mon Feb 12 07:15:45 2024 -0800
# 
#     Merge tag 'vfs-6.8-rc5.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
#     
#     Pull vfs fixes from Christian Brauner:
#     
#      - Fix performance regression introduced by moving the security
#        permission hook out of do_clone_file_range() and into its caller
#        vfs_clone_file_range().
#     
#        This causes the security hook to be called in situation were it
#        wasn't called before as the fast permission checks were left in
#        do_clone_file_range().
#     
#        Fix this by merging the two implementations back together and
#        restoring the old ordering: fast permission checks first, expensive
#        ones later.
#     
#      - Tweak mount_setattr() permission checking so that mount properties on
#        the real rootfs can be changed.
#     
#        When we added mount_setattr() we added additional checks compared to
#        legacy mount(2). If the mount had a parent then verify that the
#        caller and the mount namespace the mount is attached to match and if
#        not make sure that it's an anonymous mount.
#     
#        But the real rootfs falls into neither category. It is neither an
#        anoymous mount because it is obviously attached to the initial mount
#        namespace but it also obviously doesn't have a parent mount. So that
#        means legacy mount(2) allows changing mount properties on the real
#        rootfs but mount_setattr(2) blocks this. This causes regressions (See
#        the commit for details).
#     
#        Fix this by relaxing the check. If the mount has a parent or if it
#        isn't a detached mount, verify that the mount namespaces of the
#        caller and the mount are the same. Technically, we could probably
#        write this even simpler and check that the mount namespaces match if
#        it isn't a detached mount. But the slightly longer check makes it
#        clearer what conditions one needs to think about.
#     
#     * tag 'vfs-6.8-rc5.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs:
#       fs: relax mount_setattr() permission checks
#       remap_range: merge do_clone_file_range() into vfs_clone_file_range()
# < /opt/cross/kisskb/korg/gcc-11.3.0-nolibc/sh4-linux/bin/sh4-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-11.3.0-nolibc/sh4-linux/bin/sh4-linux-ld --version
# < git log --format=%s --max-count=1 716f4aaa7b48a55c73d632d0657b35342b1fefd7
# make -s -j 40 ARCH=sh O=/kisskb/build/linus_se7619_defconfig_sh4-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.3.0-nolibc/sh4-linux/bin/sh4-linux-  se7619_defconfig
# < make -s -j 40 ARCH=sh O=/kisskb/build/linus_se7619_defconfig_sh4-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.3.0-nolibc/sh4-linux/bin/sh4-linux-  help
# make -s -j 40 ARCH=sh O=/kisskb/build/linus_se7619_defconfig_sh4-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.3.0-nolibc/sh4-linux/bin/sh4-linux-  olddefconfig
# make -s -j 40 ARCH=sh O=/kisskb/build/linus_se7619_defconfig_sh4-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.3.0-nolibc/sh4-linux/bin/sh4-linux-  
  Generating include/generated/machtypes.h
<stdin>:1519:2: warning: #warning syscall clone3 not implemented [-Wcpp]
/kisskb/src/arch/sh/mm/cache-sh2.c:85:13: warning: no previous prototype for 'sh2_cache_init' [-Wmissing-prototypes]
   85 | void __init sh2_cache_init(void)
      |             ^~~~~~~~~~~~~~
/kisskb/src/arch/sh/mm/nommu.c:76:13: warning: no previous prototype for 'kmap_coherent_init' [-Wmissing-prototypes]
   76 | void __init kmap_coherent_init(void)
      |             ^~~~~~~~~~~~~~~~~~
/kisskb/src/arch/sh/mm/nommu.c:80:7: warning: no previous prototype for 'kmap_coherent' [-Wmissing-prototypes]
   80 | void *kmap_coherent(struct page *page, unsigned long addr)
      |       ^~~~~~~~~~~~~
/kisskb/src/arch/sh/mm/nommu.c:86:6: warning: no previous prototype for 'kunmap_coherent' [-Wmissing-prototypes]
   86 | void kunmap_coherent(void *kvaddr)
      |      ^~~~~~~~~~~~~~~
/kisskb/src/arch/sh/kernel/cpu/init.c:99:29: warning: no previous prototype for 'l2_cache_init' [-Wmissing-prototypes]
   99 | void __attribute__ ((weak)) l2_cache_init(void)
      |                             ^~~~~~~~~~~~~
/kisskb/src/arch/sh/kernel/return_address.c:49:7: warning: no previous prototype for 'return_address' [-Wmissing-prototypes]
   49 | void *return_address(unsigned int depth)
      |       ^~~~~~~~~~~~~~
/kisskb/src/arch/sh/kernel/sys_sh.c:58:16: warning: no previous prototype for 'sys_cacheflush' [-Wmissing-prototypes]
   58 | asmlinkage int sys_cacheflush(unsigned long addr, unsigned long len, int op)
      |                ^~~~~~~~~~~~~~
/kisskb/src/arch/sh/kernel/traps_32.c:735:6: warning: no previous prototype for 'per_cpu_trap_init' [-Wmissing-prototypes]
  735 | void per_cpu_trap_init(void)
      |      ^~~~~~~~~~~~~~~~~
/kisskb/src/arch/sh/kernel/hw_breakpoint.c:135:5: warning: no previous prototype for 'arch_bp_generic_fields' [-Wmissing-prototypes]
  135 | int arch_bp_generic_fields(int sh_len, int sh_type,
      |     ^~~~~~~~~~~~~~~~~~~~~~
Completed OK
# rm -rf /kisskb/build/linus_se7619_defconfig_sh4-gcc11
# Build took: 0:00:21.298047