# git rev-parse -q --verify 625434dafdd97372d15de21972be4b682709e854^{commit}
# git fetch -q -n -f git://fs.ozlabs.ibm.com/kernel/linus master
warning: The last gc run reported the following. Please correct the root cause
and remove .git/gc.log.
Automatic cleanup will not be performed until the file is removed.

warning: There are too many unreachable loose objects; run 'git prune' to remove them.

# git rev-parse -q --verify 625434dafdd97372d15de21972be4b682709e854^{commit}
625434dafdd97372d15de21972be4b682709e854
# git checkout -q -f -B kisskb 625434dafdd97372d15de21972be4b682709e854
# git clean -qxdf
# < git log -1
# commit 625434dafdd97372d15de21972be4b682709e854
# Merge: c05a182bf456 7b289c38335e
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Wed Apr 28 14:56:09 2021 -0700
# 
#     Merge tag 'for-5.13/io_uring-2021-04-27' of git://git.kernel.dk/linux-block
#     
#     Pull io_uring updates from Jens Axboe:
#     
#      - Support for multi-shot mode for POLL requests
#     
#      - More efficient reference counting. This is shamelessly stolen from
#        the mm side. Even though referencing is mostly single/dual user, the
#        128 count was retained to keep the code the same. Maybe this
#        should/could be made generic at some point.
#     
#      - Removal of the need to have a manager thread for each ring. The
#        manager threads only job was checking and creating new io-threads as
#        needed, instead we handle this from the queue path.
#     
#      - Allow SQPOLL without CAP_SYS_ADMIN or CAP_SYS_NICE. Since 5.12, this
#        thread is "just" a regular application thread, so no need to restrict
#        use of it anymore.
#     
#      - Cleanup of how internal async poll data lifetime is managed.
#     
#      - Fix for syzbot reported crash on SQPOLL cancelation.
#     
#      - Make buffer registration more like file registrations, which includes
#        flexibility in avoiding full set unregistration and re-registration.
#     
#      - Fix for io-wq affinity setting.
#     
#      - Be a bit more defensive in task->pf_io_worker setup.
#     
#      - Various SQPOLL fixes.
#     
#      - Cleanup of SQPOLL creds handling.
#     
#      - Improvements to in-flight request tracking.
#     
#      - File registration cleanups.
#     
#      - Tons of cleanups and little fixes
#     
#     * tag 'for-5.13/io_uring-2021-04-27' of git://git.kernel.dk/linux-block: (156 commits)
#       io_uring: maintain drain logic for multishot poll requests
#       io_uring: Check current->io_uring in io_uring_cancel_sqpoll
#       io_uring: fix NULL reg-buffer
#       io_uring: simplify SQPOLL cancellations
#       io_uring: fix work_exit sqpoll cancellations
#       io_uring: Fix uninitialized variable up.resv
#       io_uring: fix invalid error check after malloc
#       io_uring: io_sq_thread() no longer needs to reset current->pf_io_worker
#       kernel: always initialize task->pf_io_worker to NULL
#       io_uring: update sq_thread_idle after ctx deleted
#       io_uring: add full-fledged dynamic buffers support
#       io_uring: implement fixed buffers registration similar to fixed files
#       io_uring: prepare fixed rw for dynanic buffers
#       io_uring: keep table of pointers to ubufs
#       io_uring: add generic rsrc update with tags
#       io_uring: add IORING_REGISTER_RSRC
#       io_uring: enumerate dynamic resources
#       io_uring: add generic path for rsrc update
#       io_uring: preparation for rsrc tagging
#       io_uring: decouple CQE filling from requests
#       ...
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-ld --version
# < git log --format=%s --max-count=1 625434dafdd97372d15de21972be4b682709e854
# < make -s -j 10 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  randconfig
KCONFIG_SEED=0xAE85D170
# Added to kconfig CONFIG_STANDALONE=y
# Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y
# Added to kconfig CONFIG_CC_STACKPROTECTOR_STRONG=n
# Added to kconfig CONFIG_GCC_PLUGINS=n
# Added to kconfig CONFIG_GCC_PLUGIN_CYC_COMPLEXITY=n
# Added to kconfig CONFIG_GCC_PLUGIN_SANCOV=n
# Added to kconfig CONFIG_GCC_PLUGIN_LATENT_ENTROPY=n
# Added to kconfig CONFIG_BPF_PRELOAD=n
# Added to kconfig 
# < make -s -j 10 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  help
# make -s -j 10 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  olddefconfig
.config:3862:warning: override: reassigning to symbol STANDALONE
.config:3863:warning: override: reassigning to symbol PREVENT_FIRMWARE_BUILD
.config:3865:warning: override: reassigning to symbol GCC_PLUGINS
.config:3869:warning: override: reassigning to symbol BPF_PRELOAD
# make -s -j 10 ARCH=x86_64 O=/kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/x86_64-linux/bin/x86_64-linux-  
vmlinux.o: warning: objtool: __wrgsbase_inactive()+0x2d: call to ftrace_likely_update() leaves .noinstr.text section
vmlinux.o: warning: objtool: __rdgsbase_inactive()+0x2a: call to ftrace_likely_update() leaves .noinstr.text section
vmlinux.o: warning: objtool: fixup_bad_iret()+0x73: call to ftrace_likely_update() leaves .noinstr.text section
vmlinux.o: warning: objtool: noist_exc_debug()+0x3c: call to ftrace_likely_update() leaves .noinstr.text section
vmlinux.o: warning: objtool: exc_nmi()+0x3c: call to ftrace_likely_update() leaves .noinstr.text section
vmlinux.o: warning: objtool: poke_int3_handler()+0x4b: call to ftrace_likely_update() leaves .noinstr.text section
vmlinux.o: warning: objtool: safe_stack_exc_vmm_communication()+0x57: call to ftrace_likely_update() leaves .noinstr.text section
vmlinux.o: warning: objtool: __sev_es_ist_exit()+0x2d: call to ftrace_likely_update() leaves .noinstr.text section
vmlinux.o: warning: objtool: __sev_es_nmi_complete()+0x21: call to ftrace_likely_update() leaves .noinstr.text section
vmlinux.o: warning: objtool: exc_vmm_communication()+0x62: call to ftrace_likely_update() leaves .noinstr.text section
vmlinux.o: warning: objtool: rcu_dynticks_eqs_enter()+0x3d: call to ftrace_likely_update() leaves .noinstr.text section
vmlinux.o: warning: objtool: rcu_eqs_enter()+0x41: call to ftrace_likely_update() leaves .noinstr.text section
vmlinux.o: warning: objtool: rcu_dynticks_eqs_exit()+0x41: call to ftrace_likely_update() leaves .noinstr.text section
vmlinux.o: warning: objtool: rcu_eqs_exit()+0x30: call to ftrace_likely_update() leaves .noinstr.text section
vmlinux.o: warning: objtool: rcu_user_enter()+0x25: call to ftrace_likely_update() leaves .noinstr.text section
vmlinux.o: warning: objtool: rcu_irq_exit()+0x25: call to ftrace_likely_update() leaves .noinstr.text section
vmlinux.o: warning: objtool: rcu_nmi_enter()+0x34: call to ftrace_likely_update() leaves .noinstr.text section
vmlinux.o: warning: objtool: rcu_irq_enter()+0x25: call to ftrace_likely_update() leaves .noinstr.text section
vmlinux.o: warning: objtool: irqentry_nmi_enter()+0x48: call to ftrace_likely_update() leaves .noinstr.text section
vmlinux.o: warning: objtool: irqentry_nmi_exit()+0x57: call to ftrace_likely_update() leaves .noinstr.text section
vmlinux.o: warning: objtool: enter_from_user_mode()+0x40: call to ftrace_likely_update() leaves .noinstr.text section
vmlinux.o: warning: objtool: syscall_enter_from_user_mode()+0x45: call to ftrace_likely_update() leaves .noinstr.text section
vmlinux.o: warning: objtool: syscall_enter_from_user_mode_prepare()+0x40: call to ftrace_likely_update() leaves .noinstr.text section
vmlinux.o: warning: objtool: irqentry_enter_from_user_mode()+0x40: call to ftrace_likely_update() leaves .noinstr.text section
vmlinux.o: warning: objtool: irqentry_exit()+0x30: call to ftrace_likely_update() leaves .noinstr.text section
vmlinux.o: warning: objtool: context_tracking_recursion_enter()+0xb6: call to ftrace_likely_update() leaves .noinstr.text section
vmlinux.o: warning: objtool: __context_tracking_enter()+0x31: call to ftrace_likely_update() leaves .noinstr.text section
vmlinux.o: warning: objtool: __context_tracking_exit()+0x90: call to __sanitizer_cov_trace_pc() leaves .noinstr.text section
arch/x86/tools/insn_decoder_test: success: Decoded and checked 7927513 instructions
arch/x86/tools/insn_sanity: Success: decoded and checked 1000000 random instructions with 0 errors (seed:0xc6d67bec)
Completed OK
# rm -rf /kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8
# Build took: 0:06:10.163049