# git rev-parse -q --verify 73aca179d78eaa11604ba0783a6d8b2125fbc332^{commit}
# git fetch -q -n -f git://gitlab.ozlabs.ibm.com/linuxppc/linux.git fixes-test
# git rev-parse -q --verify 73aca179d78eaa11604ba0783a6d8b2125fbc332^{commit}
73aca179d78eaa11604ba0783a6d8b2125fbc332
# 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/m68k-linux/bin/m68k-linux-gcc --version
# < git log --format=%s --max-count=1 73aca179d78eaa11604ba0783a6d8b2125fbc332
# < make -s -j 48 ARCH=m68k O=/kisskb/build/powerpc-fixes_m68k-defconfig_m68k CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/m68k-linux/bin/m68k-linux-  defconfig
arch/m68k/configs/multi_defconfig:108:warning: symbol value 'm' invalid for NF_TABLES_INET
arch/m68k/configs/multi_defconfig:109:warning: symbol value 'm' invalid for NF_TABLES_NETDEV
arch/m68k/configs/multi_defconfig:214:warning: symbol value 'm' invalid for NF_TABLES_ARP
arch/m68k/configs/multi_defconfig:269:warning: symbol value 'm' invalid for NF_TABLES_BRIDGE
# make -s -j 48 ARCH=m68k O=/kisskb/build/powerpc-fixes_m68k-defconfig_m68k CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/m68k-linux/bin/m68k-linux-  
<stdin>:1239:2: warning: #warning syscall seccomp not implemented [-Wcpp]
<stdin>:1317:2: warning: #warning syscall pkey_mprotect not implemented [-Wcpp]
<stdin>:1320:2: warning: #warning syscall pkey_alloc not implemented [-Wcpp]
<stdin>:1323:2: warning: #warning syscall pkey_free not implemented [-Wcpp]
/kisskb/src/arch/m68k/mvme147/config.c: In function 'mvme147_hwclk':
/kisskb/src/arch/m68k/mvme147/config.c:152:2: warning: #warning check me! [-Wcpp]
/kisskb/src/arch/m68k/mvme16x/config.c: In function 'mvme16x_hwclk':
/kisskb/src/arch/m68k/mvme16x/config.c:399:2: warning: #warning check me! [-Wcpp]
/kisskb/src/kernel/acct.c: In function 'acct_pin_kill':
/kisskb/src/kernel/acct.c:177:2: warning: value computed is not used [-Wunused-value]
/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/ipc/shm.c: In function 'ksys_shmdt':
/kisskb/src/ipc/shm.c:1607:59: warning: 'file' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/kernel/bpf/syscall.c:1229:12: warning: 'bpf_prog_attach_check_attach_type' defined but not used [-Wunused-function]
/kisskb/src/lib/rhashtable.c: In function 'rht_deferred_worker':
/kisskb/src/lib/rhashtable.c:269:2: warning: 'next' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/lib/rhashtable.c:234:28: note: 'next' was declared here
/kisskb/src/fs/ocfs2/file.c: In function 'ocfs2_file_write_iter':
/kisskb/src/fs/ocfs2/file.c:2386:3: warning: value computed is not used [-Wunused-value]
/kisskb/src/lib/mpi/mpicoder.c: In function 'mpi_read_raw_from_sgl':
/kisskb/src/lib/mpi/mpicoder.c:336:12: warning: 'buff' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/fs/posix_acl.c: In function 'get_acl':
/kisskb/src/fs/posix_acl.c:147:3: warning: value computed is not used [-Wunused-value]
/kisskb/src/fs/udf/unicode.c: In function 'udf_name_conv_char':
/kisskb/src/fs/udf/unicode.c:157:15: warning: 'c' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/core/gen_stats.c: In function '__gnet_stats_copy_basic':
/kisskb/src/net/core/gen_stats.c:149:19: warning: 'seq' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/core/flow_dissector.c: In function '__skb_flow_dissect':
/kisskb/src/net/core/flow_dissector.c:789:7: warning: 'vlan' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/net/core/dev.c: In function 'validate_xmit_skb_list':
/kisskb/src/net/core/dev.c:3176:15: warning: 'tail' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/macsec.c: In function 'macsec_del_rxsa':
/kisskb/src/drivers/net/macsec.c:1926:2: warning: 'assoc_num' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/macsec.c:1926:2: warning: 'rx_sc' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/macsec.c: In function 'macsec_del_txsa':
/kisskb/src/drivers/net/macsec.c:2003:2: warning: 'assoc_num' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/macsec.c:2003:2: warning: 'tx_sc' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/macsec.c: In function 'macsec_upd_txsa':
/kisskb/src/drivers/net/macsec.c:2068:5: warning: 'assoc_num' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/macsec.c:2068:24: warning: 'tx_sc' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/macsec.c:2069:21: warning: 'secy' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/tun.c: In function 'tun_get_user':
/kisskb/src/drivers/net/tun.c:1820:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/tun.c:1530:31: warning: 'linear' may be used uninitialized in this function [-Wuninitialized]
/kisskb/src/drivers/net/tun.c:1730:46: note: 'linear' was declared here
Completed OK
# rm -rf /kisskb/build/powerpc-fixes_m68k-defconfig_m68k
# Build took: 0:02:12.846690