# git rev-parse -q --verify 2fcd07b7ccd5fd10b2120d298363e4e6c53ccf9c^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/linus master
# git rev-parse -q --verify 2fcd07b7ccd5fd10b2120d298363e4e6c53ccf9c^{commit}
2fcd07b7ccd5fd10b2120d298363e4e6c53ccf9c
# git checkout -q -f -B kisskb 2fcd07b7ccd5fd10b2120d298363e4e6c53ccf9c
# git clean -qxdf
# < git log -1
# commit 2fcd07b7ccd5fd10b2120d298363e4e6c53ccf9c
# Author: Liam R. Howlett <Liam.Howlett@oracle.com>
# Date:   Fri Feb 24 16:20:55 2023 -0500
# 
#     mm/mprotect: Fix successful vma_merge() of next in do_mprotect_pkey()
#     
#     If mprotect_fixup() successfully calls vma_merge() and replaces vma and
#     the next vma, then the tmp variable in the do_mprotect_pkey() is not
#     updated to point to the new vma end.  This results in the loop detecting
#     a gap between VMAs that does not exist.
#     
#     Fix the faulty value of tmp by setting it to the end location of the vma
#     iterator at the end of the loop.
#     
#     Link: https://lkml.kernel.org/r/20230224212055.1786100-1-Liam.Howlett@oracle.com
#     Fixes: 2286a6914c77 ("mm: change mprotect_fixup to vma iterator")
#     Link: https://lore.kernel.org/linux-mm/20230223120407.729110a6ecd1416ac59d9cb0@linux-foundation.org/
#     Signed-off-by: Liam R. Howlett <Liam.Howlett@oracle.com>
#     Reported-by: Bert Karwatzki <spasswolf@web.de>
#     Link: https://bugzilla.kernel.org/show_bug.cgi?id=217061
#     Tested-by: Bert Karwatzki <spasswolf@web.de>
#     Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
#     Link: https://lore.kernel.org/linux-mm/CAHk-=wjFmVL7NiuxL54qLkoabni_yD-oF9=dpDgETtdsiCbhUg@mail.gmail.com/
#     Tested-by: Linus Torvalds <torvalds@linux-foundation.org>
#     Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
#     Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
# < /opt/cross/kisskb/korg/gcc-11.3.0-nolibc/sparc64-linux/bin/sparc64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-11.3.0-nolibc/sparc64-linux/bin/sparc64-linux-ld --version
# < git log --format=%s --max-count=1 2fcd07b7ccd5fd10b2120d298363e4e6c53ccf9c
# < make -s -j 160 ARCH=sparc O=/kisskb/build/linus_sparc-allmodconfig_sparc64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.3.0-nolibc/sparc64-linux/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
# < make -s -j 160 ARCH=sparc O=/kisskb/build/linus_sparc-allmodconfig_sparc64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.3.0-nolibc/sparc64-linux/bin/sparc64-linux-  help
# make -s -j 160 ARCH=sparc O=/kisskb/build/linus_sparc-allmodconfig_sparc64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.3.0-nolibc/sparc64-linux/bin/sparc64-linux-  olddefconfig
# make -s -j 160 ARCH=sparc O=/kisskb/build/linus_sparc-allmodconfig_sparc64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.3.0-nolibc/sparc64-linux/bin/sparc64-linux-  
<stdin>:1517:2: warning: #warning syscall clone3 not implemented [-Wcpp]
/kisskb/src/fs/btrfs/inode.c: In function 'btrfs_lookup_dentry':
/kisskb/src/fs/btrfs/inode.c:5730:21: error: 'location.type' may be used uninitialized [-Werror=maybe-uninitialized]
 5730 |         if (location.type == BTRFS_INODE_ITEM_KEY) {
      |             ~~~~~~~~^~~~~
/kisskb/src/fs/btrfs/inode.c:5719:26: note: 'location' declared here
 5719 |         struct btrfs_key location;
      |                          ^~~~~~~~
cc1: all warnings being treated as errors
make[4]: *** [/kisskb/src/scripts/Makefile.build:252: fs/btrfs/inode.o] Error 1
make[4]: *** Waiting for unfinished jobs....
make[3]: *** [/kisskb/src/scripts/Makefile.build:504: fs/btrfs] Error 2
make[3]: *** Waiting for unfinished jobs....
make[2]: *** [/kisskb/src/scripts/Makefile.build:504: fs] Error 2
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [/kisskb/src/Makefile:2028: .] Error 2
make: *** [Makefile:242: __sub-make] Error 2
Command 'make -s -j 160 ARCH=sparc O=/kisskb/build/linus_sparc-allmodconfig_sparc64-gcc11 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-11.3.0-nolibc/sparc64-linux/bin/sparc64-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/linus_sparc-allmodconfig_sparc64-gcc11
# Build took: 0:06:25.126064