# git rev-parse -q --verify c17a3066b4c1acdf36fa307faaa391f558ac0420^{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 c17a3066b4c1acdf36fa307faaa391f558ac0420^{commit}
c17a3066b4c1acdf36fa307faaa391f558ac0420
# git checkout -q -f -B kisskb c17a3066b4c1acdf36fa307faaa391f558ac0420
# git clean -qxdf
# < git log -1
# commit c17a3066b4c1acdf36fa307faaa391f558ac0420
# Merge: e70b911acc16 ea9aadc06a9f
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Wed Apr 14 09:36:54 2021 -0700
# 
#     Merge tag 'dmaengine-fix-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine
#     
#     Pull dmaengine fixes from Vinod Koul:
#      "A couple of dmaengine driver fixes for:
#     
#        - race and descriptor issue for xilinx driver
#     
#        - fix interrupt handling, wq state & cleanup, field sizes for
#          completion, msix permissions for idxd driver
#     
#        - runtime pm fix for tegra driver
#     
#        - double free fix in dma_async_device_register"
#     
#     * tag 'dmaengine-fix-5.12' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine:
#       dmaengine: idxd: fix wq cleanup of WQCFG registers
#       dmaengine: idxd: clear MSIX permission entry on shutdown
#       dmaengine: plx_dma: add a missing put_device() on error path
#       dmaengine: tegra20: Fix runtime PM imbalance on error
#       dmaengine: Fix a double free in dma_async_device_register
#       dmaengine: dw: Make it dependent to HAS_IOMEM
#       dmaengine: idxd: fix wq size store permission state
#       dmaengine: idxd: fix opcap sysfs attribute output
#       dmaengine: idxd: fix delta_rec and crc size field for completion record
#       dmaengine: idxd: Fix clobbering of SWERR overflow bit on writeback
#       dmaengine: xilinx: dpdma: Fix race condition in done IRQ
#       dmaengine: xilinx: dpdma: Fix descriptor issuing on video group
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-gcc --version
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-ld --version
# < git log --format=%s --max-count=1 c17a3066b4c1acdf36fa307faaa391f558ac0420
# < make -s -j 120 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  randconfig
KCONFIG_SEED=0xF4E6FFD5
# Added to kconfig CONFIG_PREVENT_FIRMWARE_BUILD=y
# < make -s -j 120 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  help
# make -s -j 120 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  olddefconfig
# make -s -j 120 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  
/kisskb/src/arch/arm64/kernel/vdso/vgettimeofday.c:25:1: internal compiler error: in AT_loc_list, at dwarf2out.c:4849
 }
 ^
Please submit a full bug report,
with preprocessed source if appropriate.
See <https://gcc.gnu.org/bugs/> for instructions.
make[2]: *** [/kisskb/src/scripts/Makefile.build:271: arch/arm64/kernel/vdso/vgettimeofday.o] Error 1
make[1]: *** [arch/arm64/Makefile:191: vdso_prepare] Error 2
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:215: __sub-make] Error 2
Command 'make -s -j 120 ARCH=arm64 O=/kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/aarch64-linux/bin/aarch64-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/linus-rand_arm64-randconfig_arm64-gcc8
# Build took: 0:00:14.583083