# git rev-parse -q --verify 040a3c33623ba4bd11588ab0820281b854a3ffaf^{commit}
040a3c33623ba4bd11588ab0820281b854a3ffaf
already have revision, skipping fetch
# git checkout -q -f -B kisskb 040a3c33623ba4bd11588ab0820281b854a3ffaf
# git clean -qxdf
# < git log -1
# commit 040a3c33623ba4bd11588ab0820281b854a3ffaf
# Merge: 6327edceb62b 55817b340a31
# Author: Linus Torvalds <torvalds@linux-foundation.org>
# Date:   Sun Jan 12 09:35:42 2020 -0800
# 
#     Merge tag 'iommu-fixes-v5.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu
#     
#     Pull iommu fixes from Joerg Roedel:
#     
#      - Two fixes for VT-d and generic IOMMU code to fix teardown on error
#        handling code paths.
#     
#      - Patch for the Intel VT-d driver to fix handling of non-PCI devices
#     
#      - Fix W=1 compile warning in dma-iommu code
#     
#     * tag 'iommu-fixes-v5.5-rc5' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/iommu:
#       iommu/dma: fix variable 'cookie' set but not used
#       iommu/vt-d: Unlink device if failed to add to group
#       iommu: Remove device link to group on failure
#       iommu/vt-d: Fix adding non-PCI devices to Intel IOMMU
# < /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 040a3c33623ba4bd11588ab0820281b854a3ffaf
# < make -s -j 8 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=0x3AF4325D
# 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
# yes \n | make -s -j 8 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-  oldconfig
yes: standard output: Broken pipe
# make -s -j 8 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-  
/kisskb/src/tools/objtool
/kisskb/src/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c: In function 'amdgpu_bo_support_uswc':
/kisskb/src/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c:493:2: warning: #warning Please enable CONFIG_MTRR and CONFIG_X86_PAT for better performance thanks to write-combining [-Wcpp]
 #warning Please enable CONFIG_MTRR and CONFIG_X86_PAT for better performance \
  ^~~~~~~
/kisskb/src/drivers/gpu/drm/radeon/radeon_object.c: In function 'radeon_bo_create':
/kisskb/src/drivers/gpu/drm/radeon/radeon_object.c:243:2: warning: #warning Please enable CONFIG_MTRR and CONFIG_X86_PAT for better performance thanks to write-combining [-Wcpp]
 #warning Please enable CONFIG_MTRR and CONFIG_X86_PAT for better performance \
  ^~~~~~~
Failed to generate BTF for vmlinux
Try to disable CONFIG_DEBUG_INFO_BTF
make[1]: *** [/kisskb/src/Makefile:1078: vmlinux] Error 1
make: *** [Makefile:179: sub-make] Error 2
Command 'make -s -j 8 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-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/linus-rand_x86_64-randconfig_x86_64-gcc8
# Build took: 0:12:07.288689