# git rev-parse -q --verify ff5bc793e47b537bf3e904fada585e102c54dd8b^{commit} ff5bc793e47b537bf3e904fada585e102c54dd8b already have revision, skipping fetch # git checkout -q -f -B kisskb ff5bc793e47b537bf3e904fada585e102c54dd8b # git clean -qxdf # < git log -1 # commit ff5bc793e47b537bf3e904fada585e102c54dd8b # Author: Nicholas Piggin # Date: Wed Jun 6 11:40:08 2018 +1000 # # powerpc/64s/radix: Fix missing ptesync in flush_cache_vmap # # There is a typo in f1cb8f9beb ("powerpc/64s/radix: avoid ptesync after # set_pte and ptep_set_access_flags") config ifdef, which results in the # necessary ptesync not being issued after vmalloc. # # This causes random kernel faults in module load, bpf load, anywhere # that vmalloc mappings are used. # # After correcting the code, this survives a guest kernel booting # hundreds of times where previously there would be a crash every few # boots (I haven't noticed the crash on host, perhaps due to different # TLB and page table walking behaviour in hardware). # # A memory clobber is also added to the flush, just to be sure it won't # be reordered with the pte set or the subsequent mapping access. # # Fixes: f1cb8f9beb ("powerpc/64s/radix: avoid ptesync after set_pte and ptep_set_access_flags") # Signed-off-by: Nicholas Piggin # Signed-off-by: Michael Ellerman # < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version # < git log --format=%s --max-count=1 ff5bc793e47b537bf3e904fada585e102c54dd8b # < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc85xx_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- mpc85xx_defconfig # make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_mpc85xx_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- /kisskb/src/kernel/cgroup/cgroup-v1.c: In function 'cgroup1_mount': /kisskb/src/kernel/cgroup/cgroup-v1.c:1268:20: warning: 'root' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl': /kisskb/src/kernel/printk/printk.c:183:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/sound/soc/codecs/wm8960.c: In function 'wm8960_configure_clocking': /kisskb/src/sound/soc/codecs/wm8960.c:803:70: warning: 'j' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/sound/soc/codecs/wm8960.c:800:68: warning: 'i' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/base/regmap/regmap.c: In function 'regmap_raw_read': /kisskb/src/drivers/base/regmap/regmap.c:2497:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/base/regmap/regmap.c: In function '_regmap_raw_write': /kisskb/src/drivers/base/regmap/regmap.c:1819:6: warning: 'ret' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/mm/hugetlb.c: In function 'alloc_pool_huge_page': /kisskb/src/mm/hugetlb.c:1433:5: warning: 'page' 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:340:21: note: 'pdeo' was declared here /kisskb/src/drivers/net/ethernet/freescale/fs_enet/mac-scc.c: In function 'allocate_bd': /kisskb/src/drivers/net/ethernet/freescale/fs_enet/mac-scc.c:139:6: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast] /kisskb/src/drivers/tty/serial/8250/8250_core.c: In function 'univ8250_release_irq': /kisskb/src/drivers/tty/serial/8250/8250_core.c:251:18: warning: 'i' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/tty/serial/8250/8250_core.c:231:19: note: 'i' was declared here arch/powerpc/boot/mpc8568mds.dtb: Warning (pci_bridge): /pcie@e000a000/pcie@0: missing bus-range for PCI bridge arch/powerpc/boot/mpc8568mds.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' arch/powerpc/boot/mpc8544ds.dtb: Warning (pci_bridge): /pcie@e0009000/pcie@0: missing bus-range for PCI bridge arch/powerpc/boot/mpc8544ds.dtb: Warning (pci_bridge): /pcie@e000a000/pcie@0: missing bus-range for PCI bridge arch/powerpc/boot/mpc8544ds.dtb: Warning (pci_bridge): /pcie@e000b000/pcie@0: missing bus-range for PCI bridge arch/powerpc/boot/mpc8544ds.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' arch/powerpc/boot/mpc8541cds.dtb: Warning (pci_device_bus_num): /pci@e0008000/i8259@19000:bus-range: PCI bus number 1 out of range, expected (0 - 0) arch/powerpc/boot/mpc8572ds.dtb: Warning (pci_bridge): /pcie@ffe08000/pcie@0: missing bus-range for PCI bridge arch/powerpc/boot/mpc8572ds.dtb: Warning (pci_bridge): /pcie@ffe09000/pcie@0: missing bus-range for PCI bridge arch/powerpc/boot/mpc8572ds.dtb: Warning (pci_bridge): /pcie@ffe0a000/pcie@0: missing bus-range for PCI bridge arch/powerpc/boot/mpc8572ds.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' arch/powerpc/boot/mpc8555cds.dtb: Warning (pci_device_bus_num): /pci@e0008000/i8259@19000:bus-range: PCI bus number 1 out of range, expected (0 - 0) arch/powerpc/boot/mpc8548cds_32b.dtb: Warning (pci_bridge): /pcie@e000a000/pcie@0: missing bus-range for PCI bridge arch/powerpc/boot/mpc8548cds_32b.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' arch/powerpc/boot/tqm8548.dtb: Warning (pci_bridge): /pcie@e000a000/pcie@0: missing bus-range for PCI bridge arch/powerpc/boot/tqm8548.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' arch/powerpc/boot/sbc8548.dtb: Warning (pci_bridge): /pcie@e000a000/pcie@0: missing bus-range for PCI bridge arch/powerpc/boot/sbc8548.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge' INFO: Uncompressed kernel (size 0xb5f3b8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xb5f3b8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xb5f3b8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xb5f3b8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xb5f3b8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xb5f3b8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xb5f3b8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xb5f3b8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xb5f3b8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xb5f3b8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xb5f3b8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xb5f3b8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xb5f3b8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xb5f3b8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xb5f3b8) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) INFO: Uncompressed kernel (size 0xb4ec6c) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0xc00000) Image Name: Linux-4.17.0-rc3-gff5bc79 Created: Wed Jun 6 23:42:45 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5480109 Bytes = 5351.67 kB = 5.23 MB Load Address: 00000000 Entry Point: 00000000 Image Name: Linux-4.17.0-rc3-gff5bc79 Created: Wed Jun 6 23:42:47 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5504767 Bytes = 5375.75 kB = 5.25 MB Load Address: 00c00000 Entry Point: 00c00248 Image Name: Linux-4.17.0-rc3-gff5bc79 Created: Wed Jun 6 23:42:47 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5504978 Bytes = 5375.96 kB = 5.25 MB Load Address: 00c00000 Entry Point: 00c00248 Image Name: Linux-4.17.0-rc3-gff5bc79 Created: Wed Jun 6 23:42:48 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5504345 Bytes = 5375.34 kB = 5.25 MB Load Address: 00c00000 Entry Point: 00c00288 Image Name: Linux-4.17.0-rc3-gff5bc79 Created: Wed Jun 6 23:42:48 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5504850 Bytes = 5375.83 kB = 5.25 MB Load Address: 00c00000 Entry Point: 00c00248 Image Name: Linux-4.17.0-rc3-gff5bc79 Created: Wed Jun 6 23:42:48 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5504938 Bytes = 5375.92 kB = 5.25 MB Load Address: 00c00000 Entry Point: 00c00288 Image Name: Linux-4.17.0-rc3-gff5bc79 Created: Wed Jun 6 23:42:48 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5504861 Bytes = 5375.84 kB = 5.25 MB Load Address: 00c00000 Entry Point: 00c00288 Image Name: Linux-4.17.0-rc3-gff5bc79 Created: Wed Jun 6 23:42:48 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5504898 Bytes = 5375.88 kB = 5.25 MB Load Address: 00c00000 Entry Point: 00c00248 Image Name: Linux-4.17.0-rc3-gff5bc79 Created: Wed Jun 6 23:42:48 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5504156 Bytes = 5375.15 kB = 5.25 MB Load Address: 00c00000 Entry Point: 00c00248 Image Name: Linux-4.17.0-rc3-gff5bc79 Created: Wed Jun 6 23:42:48 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5505056 Bytes = 5376.03 kB = 5.25 MB Load Address: 00c00000 Entry Point: 00c00248 Image Name: Linux-4.17.0-rc3-gff5bc79 Created: Wed Jun 6 23:42:48 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5504344 Bytes = 5375.34 kB = 5.25 MB Load Address: 00c00000 Entry Point: 00c00288 Image Name: Linux-4.17.0-rc3-gff5bc79 Created: Wed Jun 6 23:42:48 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5504392 Bytes = 5375.38 kB = 5.25 MB Load Address: 00c00000 Entry Point: 00c00248 Image Name: Linux-4.17.0-rc3-gff5bc79 Created: Wed Jun 6 23:42:48 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5504898 Bytes = 5375.88 kB = 5.25 MB Load Address: 00c00000 Entry Point: 00c00248 Image Name: Linux-4.17.0-rc3-gff5bc79 Created: Wed Jun 6 23:42:48 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5504748 Bytes = 5375.73 kB = 5.25 MB Load Address: 00c00000 Entry Point: 00c00248 Image Name: Linux-4.17.0-rc3-gff5bc79 Created: Wed Jun 6 23:42:48 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5504741 Bytes = 5375.72 kB = 5.25 MB Load Address: 00c00000 Entry Point: 00c00248 Image Name: Linux-4.17.0-rc3-gff5bc79 Created: Wed Jun 6 23:42:48 2018 Image Type: PowerPC Linux Kernel Image (gzip compressed) Data Size: 5504514 Bytes = 5375.50 kB = 5.25 MB Load Address: 00c00000 Entry Point: 00c00288 Completed OK # rm -rf /kisskb/build/powerpc-next_mpc85xx_defconfig_powerpc # Build took: 0:01:29.163856