Buildresult: powerpc-fixes/powerpc-allnoconfig/powerpc-gcc4.6 built on Dec 30 2018, 15:21
kisskb
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Status:
OK
Date/Time:
Dec 30 2018, 15:21
Duration:
0:00:12.809374
Builder:
ka2
Revision:
KVM: PPC: Book3S HV: radix: Fix uninitialized var build error (
f460772291f8171988b2b60141a45706123d0c69)
Target:
powerpc-fixes/powerpc-allnoconfig/powerpc-gcc4.6
Branch:
powerpc-fixes
Compiler:
powerpc-gcc4.6
(powerpc-linux-gcc (GCC) 4.6.3 / GNU ld (GNU Binutils) 2.22)
Config:
allnoconfig
(
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Log:
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Possible warnings (1)
kernel/printk/printk.c:186:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized]
Full Log
# git rev-parse -q --verify f460772291f8171988b2b60141a45706123d0c69^{commit} f460772291f8171988b2b60141a45706123d0c69 already have revision, skipping fetch # git checkout -q -f -B kisskb f460772291f8171988b2b60141a45706123d0c69 # git clean -qxdf # < git log -1 # commit f460772291f8171988b2b60141a45706123d0c69 # Author: Michael Ellerman <mpe@ellerman.id.au> # Date: Sun Dec 30 14:05:13 2018 +1100 # # KVM: PPC: Book3S HV: radix: Fix uninitialized var build error # # Old GCCs (4.6.3 at least), aren't able to follow the logic in # __kvmhv_copy_tofrom_guest_radix() and warn that old_pid is used # uninitialized: # # arch/powerpc/kvm/book3s_64_mmu_radix.c:75:3: error: 'old_pid' may be # used uninitialized in this function # # The logic is OK, we only use old_pid if quadrant == 1, and in that # case it has definitely be initialised, eg: # # if (quadrant == 1) { # old_pid = mfspr(SPRN_PID); # ... # if (quadrant == 1 && pid != old_pid) # mtspr(SPRN_PID, old_pid); # # Annotate it to fix the error. # # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-gcc --version # < /opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux-ld --version # < git log --format=%s --max-count=1 f460772291f8171988b2b60141a45706123d0c69 # < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_powerpc-allnoconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- allnoconfig # make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_powerpc-allnoconfig_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:186:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] Completed OK # rm -rf /kisskb/build/powerpc-fixes_powerpc-allnoconfig_powerpc # Build took: 0:00:12.809374
© Michael Ellerman 2006-2018.