# git gc
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Expanding reachable commits in commit graph: 1233927, done.
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Finding extra edges in commit graph: 100% (1233927/1233927), done.
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# git rev-parse -q --verify 90450a06162e6c71ab813ea22a83196fe7cff4bc^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/linus master
# git rev-parse -q --verify 90450a06162e6c71ab813ea22a83196fe7cff4bc^{commit}
90450a06162e6c71ab813ea22a83196fe7cff4bc
# git checkout -q -f -B kisskb 90450a06162e6c71ab813ea22a83196fe7cff4bc
# git clean -qxdf
# < git log -1
# commit 90450a06162e6c71ab813ea22a83196fe7cff4bc
# Merge: 447cec034b78 a80712b9cc7e
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Wed Nov 8 09:47:52 2023 -0800
# 
#     Merge tag 'rcu-fixes-v6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks
#     
#     Pull RCU fixes from Frederic Weisbecker:
#     
#      - Fix a lock inversion between scheduler and RCU introduced in
#        v6.2-rc4. The scenario could trigger on any user of RCU_NOCB
#        (mostly Android but also nohz_full)
#     
#      - Fix PF_IDLE semantic changes introduced in v6.6-rc3 breaking
#        some RCU-Tasks and RCU-Tasks-Trace expectations as to what
#        exactly is an idle task. This resulted in potential spurious
#        stalls and warnings.
#     
#     * tag 'rcu-fixes-v6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/frederic/linux-dynticks:
#       rcu/tasks-trace: Handle new PF_IDLE semantics
#       rcu/tasks: Handle new PF_IDLE semantics
#       rcu: Introduce rcu_cpu_online()
#       rcu: Break rcu_node_0 --> &rq->__lock order
# < /opt/cross/kisskb/korg/gcc-8.5.0-nolibc/m68k-linux/bin/m68k-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-8.5.0-nolibc/m68k-linux/bin/m68k-linux-ld --version
# < git log --format=%s --max-count=1 90450a06162e6c71ab813ea22a83196fe7cff4bc
# make -s -j 24 ARCH=m68k O=/kisskb/build/linus_defconfig_m68k-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/m68k-linux/bin/m68k-linux-  defconfig
# < make -s -j 24 ARCH=m68k O=/kisskb/build/linus_defconfig_m68k-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/m68k-linux/bin/m68k-linux-  help
# make -s -j 24 ARCH=m68k O=/kisskb/build/linus_defconfig_m68k-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/m68k-linux/bin/m68k-linux-  olddefconfig
# make -s -j 24 ARCH=m68k O=/kisskb/build/linus_defconfig_m68k-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/m68k-linux/bin/m68k-linux-  
/kisskb/src/kernel/bpf/task_iter.c: In function 'bpf_iter_css_task_new':
/kisskb/src/kernel/bpf/task_iter.c:917:7: error: 'CSS_TASK_ITER_PROCS' undeclared (first use in this function); did you mean 'BPF_TASK_ITER_TGID'?
  case CSS_TASK_ITER_PROCS | CSS_TASK_ITER_THREADED:
       ^~~~~~~~~~~~~~~~~~~
       BPF_TASK_ITER_TGID
/kisskb/src/kernel/bpf/task_iter.c:917:7: note: each undeclared identifier is reported only once for each function it appears in
/kisskb/src/kernel/bpf/task_iter.c:917:29: error: 'CSS_TASK_ITER_THREADED' undeclared (first use in this function); did you mean 'BPF_TASK_ITER_TGID'?
  case CSS_TASK_ITER_PROCS | CSS_TASK_ITER_THREADED:
                             ^~~~~~~~~~~~~~~~~~~~~~
                             BPF_TASK_ITER_TGID
/kisskb/src/kernel/bpf/task_iter.c:925:53: error: invalid application of 'sizeof' to incomplete type 'struct css_task_iter'
  kit->css_it = bpf_mem_alloc(&bpf_global_ma, sizeof(struct css_task_iter));
                                                     ^~~~~~
/kisskb/src/kernel/bpf/task_iter.c:928:2: error: implicit declaration of function 'css_task_iter_start'; did you mean 'task_seq_start'? [-Werror=implicit-function-declaration]
  css_task_iter_start(css, flags, kit->css_it);
  ^~~~~~~~~~~~~~~~~~~
  task_seq_start
/kisskb/src/kernel/bpf/task_iter.c: In function 'bpf_iter_css_task_next':
/kisskb/src/kernel/bpf/task_iter.c:938:9: error: implicit declaration of function 'css_task_iter_next'; did you mean 'class_dev_iter_next'? [-Werror=implicit-function-declaration]
  return css_task_iter_next(kit->css_it);
         ^~~~~~~~~~~~~~~~~~
         class_dev_iter_next
/kisskb/src/kernel/bpf/task_iter.c:938:9: warning: returning 'int' from a function with return type 'struct task_struct *' makes pointer from integer without a cast [-Wint-conversion]
  return css_task_iter_next(kit->css_it);
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/kisskb/src/kernel/bpf/task_iter.c: In function 'bpf_iter_css_task_destroy':
/kisskb/src/kernel/bpf/task_iter.c:947:2: error: implicit declaration of function 'css_task_iter_end'; did you mean 'vma_iter_end'? [-Werror=implicit-function-declaration]
  css_task_iter_end(kit->css_it);
  ^~~~~~~~~~~~~~~~~
  vma_iter_end
cc1: some warnings being treated as errors
make[5]: *** [/kisskb/src/scripts/Makefile.build:243: kernel/bpf/task_iter.o] Error 1
make[4]: *** [/kisskb/src/scripts/Makefile.build:480: kernel/bpf] Error 2
make[3]: *** [/kisskb/src/scripts/Makefile.build:480: kernel] Error 2
make[3]: *** Waiting for unfinished jobs....
make[2]: *** [/kisskb/src/Makefile:1911: .] Error 2
make[1]: *** [/kisskb/src/Makefile:234: __sub-make] Error 2
make: *** [Makefile:234: __sub-make] Error 2
Command 'make -s -j 24 ARCH=m68k O=/kisskb/build/linus_defconfig_m68k-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.5.0-nolibc/m68k-linux/bin/m68k-linux-  ' returned non-zero exit status 2.
# rm -rf /kisskb/build/linus_defconfig_m68k-gcc8
# Build took: 0:09:15.068954