# git rev-parse -q --verify 1936f094e164cc13ebf17aba1d6b34e033e64188^{commit}
1936f094e164cc13ebf17aba1d6b34e033e64188
already have revision, skipping fetch
# git checkout -q -f -B kisskb 1936f094e164cc13ebf17aba1d6b34e033e64188
# git clean -qxdf
# < git log -1
# commit 1936f094e164cc13ebf17aba1d6b34e033e64188
# Author: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
# Date:   Wed Oct 31 22:48:13 2018 +0530
# 
#     selftests/powerpc: Fix compilation issue due to asm label
#     
#     We are using 'dscr_insn' as a label in inline asm to identify if a
#     SIGILL was generated by the mtspr instruction at that point. However,
#     with inline assembly, the compiler is still free to duplicate the asm
#     statement for optimization purposes, which results in the label being
#     defined twice with the error:
#             /tmp/ccerQCql.s:874: Error: symbol `dscr_insn' is already defined
#     
#     With different compiler versions, we may also see:
#             /tmp/ccJzLDlN.o:(.toc+0x0): undefined reference to `dscr_insn'
#     
#     Remove the use of the label in the inline assembly. Instead, just look
#     for the offending instruction in the signal handler.
#     
#     Fixes: d2bf793237b3 ("selftests/powerpc: Add test to verify rfi flush across a system call")
#     Reported-by: Breno Leitao <leitao@debian.org>
#     Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
#     Tested-by: Breno Leitao <leitao@debian.org>
#     Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
# < /opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version
# < git log --format=%s --max-count=1 1936f094e164cc13ebf17aba1d6b34e033e64188
# < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc6xx_defconfig_powerpc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  ppc6xx_defconfig
# make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc6xx_defconfig_powerpc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  
In file included from /kisskb/src/arch/powerpc/kernel/ptrace.c:24:
In function 'user_regset_copyin',
    inlined from 'vr_set' at /kisskb/src/arch/powerpc/kernel/ptrace.c:619:9:
/kisskb/src/include/linux/regset.h:295:4: error: 'memcpy' offset [-527, -529] is out of the bounds [0, 16] of object 'vrsave' with type 'union <anonymous>' [-Werror=array-bounds]
    memcpy(data, *kbuf, copy);
    ^~~~~~~~~~~~~~~~~~~~~~~~~
/kisskb/src/arch/powerpc/kernel/ptrace.c: In function 'vr_set':
/kisskb/src/arch/powerpc/kernel/ptrace.c:614:5: note: 'vrsave' declared here
   } vrsave;
     ^~~~~~
In file included from /kisskb/src/arch/powerpc/kernel/ptrace.c:24:
In function 'user_regset_copyout',
    inlined from 'vr_get' at /kisskb/src/arch/powerpc/kernel/ptrace.c:572:9:
/kisskb/src/include/linux/regset.h:270:4: error: 'memcpy' offset [-527, -529] is out of the bounds [0, 16] of object 'vrsave' with type 'union <anonymous>' [-Werror=array-bounds]
    memcpy(*kbuf, data, copy);
    ^~~~~~~~~~~~~~~~~~~~~~~~~
/kisskb/src/arch/powerpc/kernel/ptrace.c: In function 'vr_get':
/kisskb/src/arch/powerpc/kernel/ptrace.c:567:5: note: 'vrsave' declared here
   } vrsave;
     ^~~~~~
cc1: all warnings being treated as errors
make[3]: *** [/kisskb/src/scripts/Makefile.build:305: arch/powerpc/kernel/ptrace.o] Error 1
make[3]: *** Waiting for unfinished jobs....
make[2]: *** [/kisskb/src/scripts/Makefile.build:546: arch/powerpc/kernel] Error 2
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [/kisskb/src/Makefile:1060: arch/powerpc] Error 2
make[1]: *** Waiting for unfinished jobs....
In file included from /kisskb/src/sound/ppc/pmac.h:25,
                 from /kisskb/src/sound/ppc/awacs.c:29:
/kisskb/src/sound/ppc/awacs.c: In function 'snd_pmac_awacs_init':
/kisskb/src/include/sound/control.h:223:9: warning: 'speaker_vol' may be used uninitialized in this function [-Wmaybe-uninitialized]
  return _snd_ctl_add_slave(master, slave, 0);
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/kisskb/src/sound/ppc/awacs.c:886:36: note: 'speaker_vol' was declared here
  struct snd_kcontrol *master_vol, *speaker_vol;
                                    ^~~~~~~~~~~
/kisskb/src/net/tipc/topsrv.c: In function 'tipc_topsrv_start':
/kisskb/src/net/tipc/topsrv.c:660:2: warning: 'strncpy' specified bound depends on the length of the source argument [-Wstringop-overflow=]
  strncpy(srv->name, name, strlen(name) + 1);
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/kisskb/src/net/tipc/topsrv.c:660:27: note: length computed here
  strncpy(srv->name, name, strlen(name) + 1);
                           ^~~~~~~~~~~~
make: *** [Makefile:146: sub-make] Error 2
Command 'make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-next_ppc6xx_defconfig_powerpc-gcc8 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-8.1.0-nolibc/powerpc64-linux/bin/powerpc64-linux-  ' returned non-zero exit status 2
# rm -rf /kisskb/build/powerpc-next_ppc6xx_defconfig_powerpc-gcc8
# Build took: 0:03:14.039275