Buildresult: powerpc-fixes/mpc83xx_defconfig/powerpc-gcc5 built on Jul 6 2018, 10:59
kisskb
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Status:
OK
Date/Time:
Jul 6 2018, 10:59
Duration:
0:01:27.469072
Builder:
ka3
Revision:
KVM: PPC: Check if IOMMU page is contained in the pinned physical page (
9e049ef80be988e91cb55f3ddfa7c80a7b376852)
Target:
powerpc-fixes/mpc83xx_defconfig/powerpc-gcc5
Branch:
powerpc-fixes
Compiler:
powerpc-gcc5
(powerpc64-linux-gcc (GCC) 5.3.0)
Config:
mpc83xx_defconfig
(
download
)
Log:
Download original
Possible warnings (2)
arch/powerpc/boot/mpc832x_rdb.dtb: Warning (interrupts_property): /qe@e0100000/mdio@3120/ethernet-phy@0:#interrupt-cells: size is (4), expected multiple of 8 arch/powerpc/boot/mpc832x_rdb.dtb: Warning (interrupts_property): /qe@e0100000/mdio@3120/ethernet-phy@4:#interrupt-cells: size is (4), expected multiple of 8
Full Log
# git rev-parse -q --verify 9e049ef80be988e91cb55f3ddfa7c80a7b376852^{commit} 9e049ef80be988e91cb55f3ddfa7c80a7b376852 already have revision, skipping fetch # git checkout -q -f -B kisskb 9e049ef80be988e91cb55f3ddfa7c80a7b376852 # git clean -qxdf # < git log -1 # commit 9e049ef80be988e91cb55f3ddfa7c80a7b376852 # Author: Alexey Kardashevskiy <aik@ozlabs.ru> # Date: Thu Jul 5 18:01:33 2018 +1000 # # KVM: PPC: Check if IOMMU page is contained in the pinned physical page # # A VM which has: # - a DMA capable device passed through to it (eg. network card); # - running a malicious kernel that ignores H_PUT_TCE failure; # - capability of using IOMMU pages bigger that physical pages # can create an IOMMU mapping that exposes (for example) 16MB of # the host physical memory to the device when only 64K was allocated to # the VM. # # The remaining 16MB - 64K will be some other content of host memory, # possibly including pages of the VM, but also pages of host kernel memory, # host programs or other VMs. # # The attacking VM does not control the location of the page it can map, # and is only allowed to map as many pages as it has pages of RAM. # # We already have a check in drivers/vfio/vfio_iommu_spapr_tce.c that # an IOMMU page is contained in the physical page so the PCI hardware won't # get access to unassigned host memory; however this check is missing in # the KVM fastpath (H_PUT_TCE accelerated code). We were lucky so far and # did not hit this yet as the very first time when the mapping happens # we do not have tbl::it_userspace allocated yet and fall back to # the userspace which in turn calls VFIO IOMMU driver, this fails and # the guest does not retry, # # This stores the smallest preregistered page size in the preregistered # region descriptor and changes the mm_iommu_xxx API to check this against # the IOMMU page size. This calculates maximum page size as a minimum of # the natural region alignment and compound page size. # # Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # < /opt/cross/kisskb/gcc-5.3.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version # < git log --format=%s --max-count=1 9e049ef80be988e91cb55f3ddfa7c80a7b376852 # < make -s -j 10 ARCH=powerpc O=/kisskb/build/powerpc-fixes_mpc83xx_defconfig_powerpc-5.3 CROSS_COMPILE=/opt/cross/kisskb/gcc-5.3.0-nolibc/powerpc64-linux/bin/powerpc64-linux- mpc83xx_defconfig # make -s -j 10 ARCH=powerpc O=/kisskb/build/powerpc-fixes_mpc83xx_defconfig_powerpc-5.3 CROSS_COMPILE=/opt/cross/kisskb/gcc-5.3.0-nolibc/powerpc64-linux/bin/powerpc64-linux- /kisskb/src/net/Makefile:24: CC cannot link executables. Skipping bpfilter. /kisskb/src/net/Makefile:24: CC cannot link executables. Skipping bpfilter. arch/powerpc/boot/mpc832x_rdb.dtb: Warning (interrupts_property): /qe@e0100000/mdio@3120/ethernet-phy@0:#interrupt-cells: size is (4), expected multiple of 8 arch/powerpc/boot/mpc832x_rdb.dtb: Warning (interrupts_property): /qe@e0100000/mdio@3120/ethernet-phy@4:#interrupt-cells: size is (4), expected multiple of 8 INFO: Uncompressed kernel (size 0x607758) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) INFO: Uncompressed kernel (size 0x607758) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) INFO: Uncompressed kernel (size 0x607758) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) INFO: Uncompressed kernel (size 0x607758) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) INFO: Uncompressed kernel (size 0x607758) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) INFO: Uncompressed kernel (size 0x607758) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) INFO: Uncompressed kernel (size 0x5f7040) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x600000) INFO: Uncompressed kernel (size 0x607758) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x700000) Image Name: Linux-4.18.0-rc3-g9e049ef Created: Fri Jul 6 11:01:24 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3060952 Bytes = 2989.21 kB = 2.92 MB Load Address: 00000000 Entry Point: 00000000 Image Name: Linux-4.18.0-rc3-g9e049ef Created: Fri Jul 6 11:01:24 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3084986 Bytes = 3012.68 kB = 2.94 MB Load Address: 00700000 Entry Point: 007001f4 Image Name: Linux-4.18.0-rc3-g9e049ef Created: Fri Jul 6 11:01:24 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3085333 Bytes = 3013.02 kB = 2.94 MB Load Address: 00700000 Entry Point: 007001f4 Image Name: Linux-4.18.0-rc3-g9e049ef Created: Fri Jul 6 11:01:24 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3084751 Bytes = 3012.45 kB = 2.94 MB Load Address: 00700000 Entry Point: 007001f4 Image Name: Linux-4.18.0-rc3-g9e049ef Created: Fri Jul 6 11:01:24 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3084429 Bytes = 3012.14 kB = 2.94 MB Load Address: 00700000 Entry Point: 007001f4 Image Name: Linux-4.18.0-rc3-g9e049ef Created: Fri Jul 6 11:01:24 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3084959 Bytes = 3012.66 kB = 2.94 MB Load Address: 00700000 Entry Point: 007001f4 Image Name: Linux-4.18.0-rc3-g9e049ef Created: Fri Jul 6 11:01:24 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 3084911 Bytes = 3012.61 kB = 2.94 MB Load Address: 00700000 Entry Point: 007001f4 Completed OK # rm -rf /kisskb/build/powerpc-fixes_mpc83xx_defconfig_powerpc-5.3 # Build took: 0:01:27.469072
© Michael Ellerman 2006-2018.