Buildresult: powerpc-fixes/pseries_defconfig+NO_MEMORY_HOTREMOVE/powerpc-gcc4.9 built on May 22 2020, 15:01

kisskb

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Status:	OK
Date/Time:	May 22 2020, 15:01
Duration:	0:03:30.601159
Builder:	blade4b
Revision:	powerpc/64s: Disable STRICT_KERNEL_RWX (`8659a0e0efdd975c73355dbc033f79ba3b31e82c)`
Target:	powerpc-fixes/pseries_defconfig+NO_MEMORY_HOTREMOVE/powerpc-gcc4.9
Branch:	powerpc-fixes
Compiler:	powerpc-gcc4.9 (powerpc64-linux-gcc (GCC) 4.9.4 / GNU ld (GNU Binutils) 2.29.1.20170915)
Config:	pseries_defconfig+NO_MEMORY_HOTREMOVE (download)
Log:	Download original Possible warnings (6) kernel/trace/ftrace.c:7166:6: warning: 'seq_ops' may be used uninitialized in this function [-Wmaybe-uninitialized] kernel/trace/ftrace.c:7244:8: warning: 'filtered_pids' may be used uninitialized in this function [-Wmaybe-uninitialized] kernel/trace/ftrace.c:7261:22: warning: 'other_pids' may be used uninitialized in this function [-Wmaybe-uninitialized] fs/btrfs/backref.c:394:9: warning: missing braces around initializer [-Wmissing-braces] fs/btrfs/backref.c:394:9: warning: (near initialization for 'target.rbnode') [-Wmissing-braces] kernel/futex.c:1676:17: warning: 'oldval' may be used uninitialized in this function [-Wmaybe-uninitialized] Full Log # git rev-parse -q --verify 8659a0e0efdd975c73355dbc033f79ba3b31e82c^{commit} 8659a0e0efdd975c73355dbc033f79ba3b31e82c already have revision, skipping fetch # git checkout -q -f -B kisskb 8659a0e0efdd975c73355dbc033f79ba3b31e82c # git clean -qxdf # < git log -1 # commit 8659a0e0efdd975c73355dbc033f79ba3b31e82c # Author: Michael Ellerman <mpe@ellerman.id.au> # Date: Wed May 20 23:36:05 2020 +1000 # # powerpc/64s: Disable STRICT_KERNEL_RWX # # Several strange crashes have been eventually traced back to # STRICT_KERNEL_RWX and its interaction with code patching. # # Various paths in our ftrace, kprobes and other patching code need to # be hardened against patching failures, otherwise we can end up running # with partially/incorrectly patched ftrace paths, kprobes or jump # labels, which can then cause strange crashes. # # Although fixes for those are in development, they're not -rc material. # # There also seem to be problems with the underlying strict RWX logic, # which needs further debugging. # # So for now disable STRICT_KERNEL_RWX on 64-bit to prevent people from # enabling the option and tripping over the bugs. # # Fixes: 1e0fc9d1eb2b ("powerpc/Kconfig: Enable STRICT_KERNEL_RWX for some configs") # Cc: stable@vger.kernel.org # v4.13+ # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # Link: https://lore.kernel.org/r/20200520133605.972649-1-mpe@ellerman.id.au # < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-gcc --version # < /opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux-ld --version # < git log --format=%s --max-count=1 8659a0e0efdd975c73355dbc033f79ba3b31e82c # < make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_pseries_defconfig+NO_MEMORY_HOTREMOVE_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- pseries_defconfig # Added to kconfig CONFIG_MEMORY_HOTPLUG=y # Added to kconfig CONFIG_MEMORY_HOTREMOVE=n # < make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_pseries_defconfig+NO_MEMORY_HOTREMOVE_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- help # make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_pseries_defconfig+NO_MEMORY_HOTREMOVE_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- olddefconfig # make -s -j 24 ARCH=powerpc O=/kisskb/build/powerpc-fixes_pseries_defconfig+NO_MEMORY_HOTREMOVE_powerpc-gcc4.9 CROSS_COMPILE=/opt/cross/kisskb/korg/gcc-4.9.4-nolibc/powerpc64-linux/bin/powerpc64-linux- /kisskb/src/kernel/trace/ftrace.c: In function 'pid_open': /kisskb/src/kernel/trace/ftrace.c:7166:6: warning: 'seq_ops' may be used uninitialized in this function [-Wmaybe-uninitialized] ret = seq_open(file, seq_ops); ^ /kisskb/src/kernel/trace/ftrace.c: In function 'pid_write': /kisskb/src/kernel/trace/ftrace.c:7244:8: warning: 'filtered_pids' may be used uninitialized in this function [-Wmaybe-uninitialized] ret = trace_pid_write(filtered_pids, &pid_list, ubuf, cnt); ^ /kisskb/src/kernel/trace/ftrace.c:7261:22: warning: 'other_pids' may be used uninitialized in this function [-Wmaybe-uninitialized] } else if (pid_list && !other_pids) { ^ /kisskb/src/fs/btrfs/backref.c: In function 'is_shared_data_backref': /kisskb/src/fs/btrfs/backref.c:394:9: warning: missing braces around initializer [-Wmissing-braces] struct prelim_ref target = {0}; ^ /kisskb/src/fs/btrfs/backref.c:394:9: warning: (near initialization for 'target.rbnode') [-Wmissing-braces] /kisskb/src/kernel/futex.c: In function 'do_futex': /kisskb/src/kernel/futex.c:1676:17: warning: 'oldval' may be used uninitialized in this function [-Wmaybe-uninitialized] return oldval == cmparg; ^ /kisskb/src/kernel/futex.c:1652:6: note: 'oldval' was declared here int oldval, ret; ^ Completed OK # rm -rf /kisskb/build/powerpc-fixes_pseries_defconfig+NO_MEMORY_HOTREMOVE_powerpc-gcc4.9 # Build took: 0:03:30.601159

© Michael Ellerman 2006-2018.