# git rev-parse -q --verify 73aca179d78eaa11604ba0783a6d8b2125fbc332^{commit}
73aca179d78eaa11604ba0783a6d8b2125fbc332
already have revision, skipping fetch
# git checkout -q -f -B kisskb 73aca179d78eaa11604ba0783a6d8b2125fbc332
# git clean -qxdf
# < git log -1
# commit 73aca179d78eaa11604ba0783a6d8b2125fbc332
# Author: Michael Ellerman <mpe@ellerman.id.au>
# Date:   Mon Mar 26 19:27:01 2018 +1100
# 
#     powerpc/modules: Fix crashes by adding CONFIG_RELOCATABLE to vermagic
#     
#     If you build the kernel with CONFIG_RELOCATABLE=n, then install the
#     modules, rebuild the kernel with CONFIG_RELOCATABLE=y and leave the
#     old modules installed, we crash something like:
#     
#       Unable to handle kernel paging request for data at address 0xd000000018d66cef
#       Faulting instruction address: 0xc0000000021ddd08
#       Oops: Kernel access of bad area, sig: 11 [#1]
#       Modules linked in: x_tables autofs4
#       CPU: 2 PID: 1 Comm: systemd Not tainted 4.16.0-rc6-gcc_ubuntu_le-g99fec39 #1
#       ...
#       NIP check_version.isra.22+0x118/0x170
#       Call Trace:
#         __ksymtab_xt_unregister_table+0x58/0xfffffffffffffcb8 [x_tables] (unreliable)
#         resolve_symbol+0xb4/0x150
#         load_module+0x10e8/0x29a0
#         SyS_finit_module+0x110/0x140
#         system_call+0x58/0x6c
#     
#     This happens because since commit 71810db27c1c ("modversions: treat
#     symbol CRCs as 32 bit quantities"), a relocatable kernel encodes and
#     handles symbol CRCs differently from a non-relocatable kernel.
#     
#     Although it's possible we could try and detect this situation and
#     handle it, it's much more robust to simply make the state of
#     CONFIG_RELOCATABLE part of the module vermagic.
#     
#     Fixes: 71810db27c1c ("modversions: treat symbol CRCs as 32 bit quantities")
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
# < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version
# < git log --format=%s --max-count=1 73aca179d78eaa11604ba0783a6d8b2125fbc332
# < make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-fixes_mpc86xx_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  mpc86xx_defconfig
# make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-fixes_mpc86xx_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-  
/kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl':
/kisskb/src/kernel/printk/printk.c:182:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
/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/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/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/mvme7100.dtb: Warning (pci_bridge): /pcie@f1008000: missing ranges for PCI bridge (or not a bridge)
arch/powerpc/boot/mvme7100.dtb: Warning (pci_bridge): /pcie@f1008000/pcie@0: missing ranges for PCI bridge (or not a bridge)
arch/powerpc/boot/mvme7100.dtb: Warning (pci_bridge): /pcie@f1008000/pcie@0: missing bus-range for PCI bridge
arch/powerpc/boot/mvme7100.dtb: Warning (pci_bridge): /pcie@f1009000: missing ranges for PCI bridge (or not a bridge)
arch/powerpc/boot/mvme7100.dtb: Warning (pci_bridge): /pcie@f1009000/pcie@0: missing ranges for PCI bridge (or not a bridge)
arch/powerpc/boot/mvme7100.dtb: Warning (pci_bridge): /pcie@f1009000/pcie@0: missing bus-range for PCI bridge
arch/powerpc/boot/mvme7100.dtb: Warning (pci_device_bus_num): Failed prerequisite 'pci_bridge'
INFO: Uncompressed kernel (size 0x9a4b48) overlaps the address of the wrapper(0x400000)
INFO: Fixing the link_address of wrapper to (0xa00000)
Image Name:   Linux-4.16.0-g73aca17
Created:      Tue Apr 10 00:45:20 2018
Image Type:   PowerPC Linux Kernel Image (gzip compressed)
Data Size:    4716821 Bytes = 4606.27 kB = 4.50 MB
Load Address: 00000000
Entry Point:  00000000
Completed OK
# rm -rf /kisskb/build/powerpc-fixes_mpc86xx_defconfig_powerpc
# Build took: 0:00:57.524180