# git rev-parse -q --verify 5694cecdb092656a822287a6691aa7ce668c8160^{commit}
5694cecdb092656a822287a6691aa7ce668c8160
already have revision, skipping fetch
# git checkout -q -f -B kisskb 5694cecdb092656a822287a6691aa7ce668c8160
# git clean -qxdf
# < git log -1
# commit 5694cecdb092656a822287a6691aa7ce668c8160
# Merge: 13e1ad2be3a8 12f799c8c739
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Tue Dec 25 17:41:56 2018 -0800
# 
#     Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
#     
#     Pull arm64 festive updates from Will Deacon:
#      "In the end, we ended up with quite a lot more than I expected:
#     
#        - Support for ARMv8.3 Pointer Authentication in userspace (CRIU and
#          kernel-side support to come later)
#     
#        - Support for per-thread stack canaries, pending an update to GCC
#          that is currently undergoing review
#     
#        - Support for kexec_file_load(), which permits secure boot of a kexec
#          payload but also happens to improve the performance of kexec
#          dramatically because we can avoid the sucky purgatory code from
#          userspace. Kdump will come later (requires updates to libfdt).
#     
#        - Optimisation of our dynamic CPU feature framework, so that all
#          detected features are enabled via a single stop_machine()
#          invocation
#     
#        - KPTI whitelisting of Cortex-A CPUs unaffected by Meltdown, so that
#          they can benefit from global TLB entries when KASLR is not in use
#     
#        - 52-bit virtual addressing for userspace (kernel remains 48-bit)
#     
#        - Patch in LSE atomics for per-cpu atomic operations
#     
#        - Custom preempt.h implementation to avoid unconditional calls to
#          preempt_schedule() from preempt_enable()
#     
#        - Support for the new 'SB' Speculation Barrier instruction
#     
#        - Vectorised implementation of XOR checksumming and CRC32
#          optimisations
#     
#        - Workaround for Cortex-A76 erratum #1165522
#     
#        - Improved compatibility with Clang/LLD
#     
#        - Support for TX2 system PMUS for profiling the L3 cache and DMC
#     
#        - Reflect read-only permissions in the linear map by default
#     
#        - Ensure MMIO reads are ordered with subsequent calls to Xdelay()
#     
#        - Initial support for memory hotplug
#     
#        - Tweak the threshold when we invalidate the TLB by-ASID, so that
#          mremap() performance is improved for ranges spanning multiple PMDs.
#     
#        - Minor refactoring and cleanups"
#     
#     * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (125 commits)
#       arm64: kaslr: print PHYS_OFFSET in dump_kernel_offset()
#       arm64: sysreg: Use _BITUL() when defining register bits
#       arm64: cpufeature: Rework ptr auth hwcaps using multi_entry_cap_matches
#       arm64: cpufeature: Reduce number of pointer auth CPU caps from 6 to 4
#       arm64: docs: document pointer authentication
#       arm64: ptr auth: Move per-thread keys from thread_info to thread_struct
#       arm64: enable pointer authentication
#       arm64: add prctl control for resetting ptrauth keys
#       arm64: perf: strip PAC when unwinding userspace
#       arm64: expose user PAC bit positions via ptrace
#       arm64: add basic pointer authentication support
#       arm64/cpufeature: detect pointer authentication
#       arm64: Don't trap host pointer auth use to EL2
#       arm64/kvm: hide ptrauth from guests
#       arm64/kvm: consistently handle host HCR_EL2 flags
#       arm64: add pointer authentication register bits
#       arm64: add comments about EC exception levels
#       arm64: perf: Treat EXCLUDE_EL* bit definitions as unsigned
#       arm64: kpti: Whitelist Cortex-A CPUs that don't implement the CSV3 field
#       arm64: enable per-task stack canaries
#       ...
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-gcc --version
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-ld --version
# < git log --format=%s --max-count=1 5694cecdb092656a822287a6691aa7ce668c8160
# < make -s -j 8 ARCH=s390 O=/kisskb/build/linus_s390-allmodconfig_s390x CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-  allmodconfig
# Added to kconfig CONFIG_BUILD_DOCSRC=n
# Added to kconfig CONFIG_MODULE_SIG=n
# Added to kconfig CONFIG_SAMPLES=n
# yes \n | make -s -j 8 ARCH=s390 O=/kisskb/build/linus_s390-allmodconfig_s390x CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-  oldconfig
yes: standard output: Broken pipe
# make -s -j 8 ARCH=s390 O=/kisskb/build/linus_s390-allmodconfig_s390x CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-  
/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/kernel/events/core.c: In function 'perf_log_throttle':
/kisskb/src/kernel/events/core.c:7651:1: warning: 'perf_log_throttle' uses dynamic stack allocation [enabled by default]
/kisskb/src/kernel/events/core.c: In function 'perf_swevent_hrtimer':
/kisskb/src/kernel/events/core.c:9163:1: warning: 'perf_swevent_hrtimer' uses dynamic stack allocation [enabled by default]
/kisskb/src/kernel/events/core.c: In function 'perf_log_itrace_start':
/kisskb/src/kernel/events/core.c:7692:1: warning: 'perf_log_itrace_start' uses dynamic stack allocation [enabled by default]
/kisskb/src/kernel/events/core.c: In function 'perf_event_read_event':
/kisskb/src/kernel/events/core.c:6581:1: warning: 'perf_event_read_event' uses dynamic stack allocation [enabled by default]
/kisskb/src/kernel/events/core.c: In function 'perf_event_task_output':
/kisskb/src/kernel/events/core.c:6860:1: warning: 'perf_event_task_output' uses dynamic stack allocation [enabled by default]
/kisskb/src/kernel/events/core.c: In function 'perf_event_mmap_output':
/kisskb/src/kernel/events/core.c:7216:1: warning: 'perf_event_mmap_output' uses dynamic stack allocation [enabled by default]
/kisskb/src/kernel/events/core.c: In function 'perf_event_namespaces_output':
/kisskb/src/kernel/events/core.c:7053:1: warning: 'perf_event_namespaces_output' uses dynamic stack allocation [enabled by default]
/kisskb/src/kernel/events/core.c: In function 'perf_event_comm_output':
/kisskb/src/kernel/events/core.c:6954:1: warning: 'perf_event_comm_output' uses dynamic stack allocation [enabled by default]
/kisskb/src/kernel/events/core.c: In function 'perf_event_switch_output':
/kisskb/src/kernel/events/core.c:7580:1: warning: 'perf_event_switch_output' uses dynamic stack allocation [enabled by default]
/kisskb/src/kernel/events/core.c: In function 'perf_event_aux_event':
/kisskb/src/kernel/events/core.c:7488:1: warning: 'perf_event_aux_event' uses dynamic stack allocation [enabled by default]
/kisskb/src/kernel/events/core.c: In function 'perf_log_lost_samples':
/kisskb/src/kernel/events/core.c:7521:1: warning: 'perf_log_lost_samples' uses dynamic stack allocation [enabled by default]
/kisskb/src/kernel/events/core.c: In function 'perf_tp_event':
/kisskb/src/kernel/events/core.c:8331:1: warning: 'perf_tp_event' uses dynamic stack allocation [enabled by default]
/kisskb/src/kernel/events/core.c: In function '___perf_sw_event':
/kisskb/src/kernel/events/core.c:8017:1: warning: '___perf_sw_event' uses dynamic stack allocation [enabled by default]
/kisskb/src/kernel/events/ring_buffer.c: In function 'perf_output_begin_forward':
/kisskb/src/kernel/events/ring_buffer.c:238:1: warning: 'perf_output_begin_forward' uses dynamic stack allocation [enabled by default]
/kisskb/src/kernel/events/ring_buffer.c: In function 'perf_output_begin_backward':
/kisskb/src/kernel/events/ring_buffer.c:244:1: warning: 'perf_output_begin_backward' uses dynamic stack allocation [enabled by default]
/kisskb/src/kernel/events/ring_buffer.c: In function 'perf_output_begin':
/kisskb/src/kernel/events/ring_buffer.c:252:1: warning: 'perf_output_begin' uses dynamic stack allocation [enabled by default]
/kisskb/src/fs/afs/dynroot.c: In function 'afs_lookup_atcell':
/kisskb/src/fs/afs/dynroot.c:126:6: warning: 'len' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/arch/s390/kernel/nospec-branch.c: In function '__nospec_revert':
/kisskb/src/arch/s390/kernel/nospec-branch.c:130:61: error: macro "memcpy" passed 6 arguments, but takes just 3
/kisskb/src/arch/s390/kernel/nospec-branch.c:130:3: warning: statement with no effect [-Wunused-value]
make[3]: *** [/kisskb/src/scripts/Makefile.build:291: arch/s390/kernel/nospec-branch.o] Error 1
make[2]: *** [/kisskb/src/scripts/Makefile.build:516: arch/s390/kernel] Error 2
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [/kisskb/src/Makefile:1055: arch/s390] Error 2
make[1]: *** Waiting for unfinished jobs....
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:186:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/mm/hugetlb.c: In function 'alloc_pool_huge_page':
/kisskb/src/mm/hugetlb.c:1434:5: warning: 'page' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/mm/slub.c: In function 'deactivate_slab.isra.37':
/kisskb/src/mm/slub.c:2170:1: warning: 'deactivate_slab.isra.37' uses dynamic stack allocation [enabled by default]
/kisskb/src/mm/slub.c: In function 'unfreeze_partials.isra.38':
/kisskb/src/mm/slub.c:2238:1: warning: 'unfreeze_partials.isra.38' uses dynamic stack allocation [enabled by default]
/kisskb/src/mm/slub.c: In function 'get_partial_node.isra.39':
/kisskb/src/mm/slub.c:1870:1: warning: 'get_partial_node.isra.39' uses dynamic stack allocation [enabled by default]
/kisskb/src/mm/slub.c: In function '___slab_alloc':
/kisskb/src/mm/slub.c:2625:1: warning: '___slab_alloc' uses dynamic stack allocation [enabled by default]
/kisskb/src/mm/slub.c: In function '__slab_free':
/kisskb/src/mm/slub.c:2926:1: warning: '__slab_free' uses dynamic stack allocation [enabled by default]
/kisskb/src/fs/btrfs/ref-verify.c: In function 'process_extent_item.isra.2':
/kisskb/src/fs/btrfs/ref-verify.c:503:2: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/btrfs/ref-verify.c: In function 'process_leaf.isra.3':
/kisskb/src/fs/btrfs/ref-verify.c:555:2: warning: 'ret' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/f2fs/file.c: In function 'f2fs_precache_extents':
/kisskb/src/fs/f2fs/file.c:2926:6: warning: 'err' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/kernel/smp.c: In function 'smp_call_function_single':
/kisskb/src/kernel/smp.c:307:1: warning: 'smp_call_function_single' uses dynamic stack allocation [enabled by default]
/kisskb/src/kernel/rseq.c: In function 'rseq_ip_fixup':
/kisskb/src/kernel/rseq.c:249:1: warning: 'rseq_ip_fixup' uses dynamic stack allocation [enabled by default]
/kisskb/src/kernel/rseq.c: In function 'rseq_syscall':
/kisskb/src/kernel/rseq.c:301:1: warning: 'rseq_syscall' uses dynamic stack allocation [enabled by default]
/kisskb/src/fs/nfs/super.c: In function 'nfs_show_stats':
/kisskb/src/fs/nfs/super.c:890:1: warning: 'nfs_show_stats' uses dynamic stack allocation [enabled by default]
/kisskb/src/fs/nfsd/nfs4xdr.c: In function 'nfsd4_encode_components_esc':
/kisskb/src/fs/nfsd/nfs4xdr.c:2076:9: warning: 'str' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/nfsd/nfs4xdr.c:2081:42: warning: 'end' 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:341:21: note: 'pdeo' was declared here
make: *** [Makefile:152: sub-make] Error 2
Command 'make -s -j 8 ARCH=s390 O=/kisskb/build/linus_s390-allmodconfig_s390x CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/s390x-linux/bin/s390x-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/linus_s390-allmodconfig_s390x
# Build took: 0:01:57.798552