Buildresult: powerpc-fixes/pseries_le_defconfig/powerpc-gcc5 built on Apr 26 2018, 21:02

kisskb

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Status:	OK
Date/Time:	Apr 26 2018, 21:02
Duration:	0:02:18.360463
Builder:	ka2
Revision:	cpufreq: powernv: Fix the hardlockup by synchronus smp_call in timer interrupt (`daebe06ec4af252eba275f602a08086bc2bca5dc)`
Target:	powerpc-fixes/pseries_le_defconfig/powerpc-gcc5
Branch:	powerpc-fixes
Compiler:	powerpc-gcc5 (powerpc64le-linux-gcc (GCC) 5.2.0)
Config:	pseries_le_defconfig (download)
Log:	Download original Possible warnings (1) WARNING: modpost: Found 3 section mismatch(es). Full Log # git rev-parse -q --verify daebe06ec4af252eba275f602a08086bc2bca5dc^{commit} daebe06ec4af252eba275f602a08086bc2bca5dc already have revision, skipping fetch # git checkout -q -f -B kisskb daebe06ec4af252eba275f602a08086bc2bca5dc # git clean -qxdf # < git log -1 # commit daebe06ec4af252eba275f602a08086bc2bca5dc # Author: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com> # Date: Wed Apr 25 16:29:31 2018 +0530 # # cpufreq: powernv: Fix the hardlockup by synchronus smp_call in timer interrupt # # gpstate_timer_handler() uses synchronous smp_call to set the pstate # on the requested core. This causes the below hard lockup: # # smp_call_function_single+0x110/0x180 (unreliable) # smp_call_function_any+0x180/0x250 # gpstate_timer_handler+0x1e8/0x580 # call_timer_fn+0x50/0x1c0 # expire_timers+0x138/0x1f0 # run_timer_softirq+0x1e8/0x270 # __do_softirq+0x158/0x3e4 # irq_exit+0xe8/0x120 # timer_interrupt+0x9c/0xe0 # decrementer_common+0x114/0x120 # -- interrupt: 901 at doorbell_global_ipi+0x34/0x50 # LR = arch_send_call_function_ipi_mask+0x120/0x130 # arch_send_call_function_ipi_mask+0x4c/0x130 # smp_call_function_many+0x340/0x450 # pmdp_invalidate+0x98/0xe0 # change_huge_pmd+0xe0/0x270 # change_protection_range+0xb88/0xe40 # mprotect_fixup+0x140/0x340 # SyS_mprotect+0x1b4/0x350 # system_call+0x58/0x6c # # One way to avoid this is removing the smp-call. We can ensure that the # timer always runs on one of the policy-cpus. If the timer gets # migrated to a cpu outside the policy then re-queue it back on the # policy->cpus. This way we can get rid of the smp-call which was being # used to set the pstate on the policy->cpus. # # Fixes: 7bc54b652f13 ("timers, cpufreq/powernv: Initialize the gpstate timer as pinned") # Cc: stable@vger.kernel.org # v4.8+ # Reported-by: Nicholas Piggin <npiggin@gmail.com> # Reported-by: Pridhiviraj Paidipeddi <ppaidipe@linux.vnet.ibm.com> # Signed-off-by: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com> # Acked-by: Nicholas Piggin <npiggin@gmail.com> # Acked-by: Viresh Kumar <viresh.kumar@linaro.org> # Acked-by: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com> # Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> # < /opt/cross/kisskb/gcc-5.2.0-nolibc/powerpc64le-linux/bin/powerpc64le-linux-gcc --version # < git log --format=%s --max-count=1 daebe06ec4af252eba275f602a08086bc2bca5dc # < make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_pseries_le_defconfig_ppc64le CROSS_COMPILE=/opt/cross/kisskb/gcc-5.2.0-nolibc/powerpc64le-linux/bin/powerpc64le-linux- pseries_le_defconfig # make -s -j 48 ARCH=powerpc O=/kisskb/build/powerpc-fixes_pseries_le_defconfig_ppc64le CROSS_COMPILE=/opt/cross/kisskb/gcc-5.2.0-nolibc/powerpc64le-linux/bin/powerpc64le-linux- WARNING: modpost: Found 3 section mismatch(es). To see full details build your kernel with: 'make CONFIG_DEBUG_SECTION_MISMATCH=y' Completed OK # rm -rf /kisskb/build/powerpc-fixes_pseries_le_defconfig_ppc64le # Build took: 0:02:18.360463

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