Buildresult: powerpc-next/mvme5100_defconfig/powerpc-gcc4.6 built on Apr 4 2018, 02:54

kisskb

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Status:	OK
Date/Time:	Apr 4 2018, 02:54
Duration:	0:00:25.124460
Builder:	ka4
Revision:	powerpc/powernv: Always stop secondaries before reboot/shutdown (`f2748bdfe157343eb8cf910a1d89ccf2fd20100b)`
Target:	powerpc-next/mvme5100_defconfig/powerpc-gcc4.6
Branch:	powerpc-next
Compiler:	powerpc-gcc4.6 (powerpc-linux-gcc (GCC) 4.6.3)
Config:	mvme5100_defconfig (download)
Log:	Download original Possible warnings (12) kernel/time/tick-sched.c:639:17: warning: 'now' may be used uninitialized in this function [-Wuninitialized] kernel/printk/printk.c:183:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] ipc/shm.c:1565:59: warning: 'file' may be used uninitialized in this function [-Wuninitialized] lib/rhashtable.c:269:2: warning: 'next' may be used uninitialized in this function [-Wuninitialized] net/core/gen_stats.c:149:19: warning: 'seq' may be used uninitialized in this function [-Wuninitialized] lib/mpi/mpicoder.c:352:8: warning: 'buff' may be used uninitialized in this function [-Wuninitialized] drivers/net/tun.c:1816:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized] drivers/net/tun.c:1529:31: warning: 'linear' may be used uninitialized in this function [-Wuninitialized] net/core/flow_dissector.c:789:7: warning: 'vlan' may be used uninitialized in this function [-Wuninitialized] drivers/tty/serial/8250/8250_core.c:246:2: warning: 'i' may be used uninitialized in this function [-Wuninitialized] net/core/dev.c:3149:15: warning: 'tail' may be used uninitialized in this function [-Wuninitialized] fs/udf/unicode.c:157:15: warning: 'c' may be used uninitialized in this function [-Wuninitialized] Full Log # git rev-parse -q --verify f2748bdfe157343eb8cf910a1d89ccf2fd20100b^{commit} f2748bdfe157343eb8cf910a1d89ccf2fd20100b already have revision, skipping fetch # git checkout -q -f -B kisskb f2748bdfe157343eb8cf910a1d89ccf2fd20100b # git clean -qxdf # < git log -1 # commit f2748bdfe157343eb8cf910a1d89ccf2fd20100b # Author: Nicholas Piggin <npiggin@gmail.com> # Date: Sun Apr 1 20:36:15 2018 +1000 # # powerpc/powernv: Always stop secondaries before reboot/shutdown # # Currently powernv reboot and shutdown requests just leave secondaries # to do their own things. This is undesirable because they can trigger # any number of watchdogs while waiting for reboot, but also we don't # know what else they might be doing -- they might be causing trouble, # trampling memory, etc. # # The opal scheduled flash update code already ran into watchdog problems # due to flashing taking a long time, and it was fixed with 2196c6f1ed # ("powerpc/powernv: Return secondary CPUs to firmware before FW update"), # which returns secondaries to opal. It's been found that regular reboots # can take over 10 seconds, which can result in the hard lockup watchdog # firing, # # reboot: Restarting system # [ 360.038896709,5] OPAL: Reboot request... # Watchdog CPU:0 Hard LOCKUP # Watchdog CPU:44 detected Hard LOCKUP other CPUS:16 # Watchdog CPU:16 Hard LOCKUP # watchdog: BUG: soft lockup - CPU#16 stuck for 3s! [swapper/16:0] # # This patch removes the special case for flash update, and calls # smp_send_stop in all cases before calling reboot/shutdown. # # smp_send_stop could return CPUs to OPAL, the main reason not to is # that the request could come from a NMI that interrupts OPAL code, # so re-entry to OPAL can cause a number of problems. Putting # secondaries into simple spin loops improves the chances of a # successful reboot. # # Signed-off-by: Nicholas Piggin <npiggin@gmail.com> # Reviewed-by: Vasant Hegde <hegdevasant@linux.vnet.ibm.com> # 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 f2748bdfe157343eb8cf910a1d89ccf2fd20100b # < make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_mvme5100_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- mvme5100_defconfig # make -s -j 120 ARCH=powerpc O=/kisskb/build/powerpc-next_mvme5100_defconfig_powerpc CROSS_COMPILE=/opt/cross/kisskb/gcc-4.6.3-nolibc/powerpc-linux/bin/powerpc-linux- /kisskb/src/kernel/time/tick-sched.c: In function 'tick_nohz_idle_exit': /kisskb/src/kernel/time/tick-sched.c:639:17: warning: 'now' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/kernel/time/tick-sched.c:1059:10: note: 'now' was declared here /kisskb/src/kernel/printk/printk.c: In function 'devkmsg_sysctl_set_loglvl': /kisskb/src/kernel/printk/printk.c:183:16: warning: 'old' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/ipc/shm.c: In function 'SyS_shmdt': /kisskb/src/ipc/shm.c:1565:59: warning: 'file' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/ipc/shm.c:1487:15: note: 'file' was declared here /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/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/lib/mpi/mpicoder.c: In function 'mpi_read_raw_from_sgl': /kisskb/src/lib/mpi/mpicoder.c:352:8: warning: 'buff' 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:1816:30: warning: 'copylen' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/tun.c:1529:31: warning: 'linear' may be used uninitialized in this function [-Wuninitialized] /kisskb/src/drivers/net/tun.c:1726:46: note: 'linear' was declared here /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/drivers/tty/serial/8250/8250_core.c: In function 'univ8250_release_irq': /kisskb/src/drivers/tty/serial/8250/8250_core.c:246:2: 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 /kisskb/src/net/core/dev.c: In function 'validate_xmit_skb_list': /kisskb/src/net/core/dev.c:3149:15: warning: 'tail' may be used uninitialized in this function [-Wuninitialized] /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] INFO: Uncompressed kernel (size 0x40decc) overlaps the address of the wrapper(0x400000) INFO: Fixing the link_address of wrapper to (0x500000) Completed OK # rm -rf /kisskb/build/powerpc-next_mvme5100_defconfig_powerpc # Build took: 0:00:25.124460

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