FYI, we noticed the following commit: commit: fe17dfdb369d8b02fe19efc0f942c241896b4ae9 ("ipv6:ip6_xmit remove unnecessary np NULL check") url: https://github.com/0day-ci/linux/commits/Manjeet-Pawar/ipv6-ip6_xmit-remo... in testcase: nepim with following parameters: runtime: 300s nr_threads: 100% cluster: cs-localhost protocol: tcp6 cpufreq_governor: performance on test machine: 8 threads Intel(R) Core(TM) i7 CPU 870 @ 2.93GHz with 4G memory caused below changes: +------------------------------------------------------------------+------------+------------+ | | 88abd8249e | fe17dfdb36 | +------------------------------------------------------------------+------------+------------+ | boot_successes | 35 | 23 | | boot_failures | 0 | 7 | | invoked_oom-killer:gfp_mask=0x | 0 | 2 | | Mem-Info | 0 | 2 | | Kernel_panic-not_syncing:Out_of_memory_and_no_killable_processes | 0 | 2 | | general_protection_fault:#[##]SMP | 0 | 5 | | RIP:ip6_finish_output | 0 | 5 | | calltrace:SyS_connect | 0 | 5 | | Kernel_panic-not_syncing:Fatal_exception_in_interrupt | 0 | 5 | +------------------------------------------------------------------+------------+------------+ [ 14.178859] x86/PAT: bmc-watchdog:541 map pfn expected mapping type uncached-minus for [mem 0xbf780000-0xbf780fff], got write-back [ 14.179569] x86/PAT: bmc-watchdog:541 map pfn expected mapping type uncached-minus for [mem 0xbf780000-0xbf780fff], got write-back [ 15.155044] kernel profiling enabled schedstats, disable via kernel.sched_schedstats. [ 16.163235] general protection fault: 0000 [#1] SMP [ 16.163530] Modules linked in: rpcsec_gss_krb5 auth_rpcgss [ 16.163833] 2016-12-10 11:34:08 ./nepim -c ::1 -d -a 300 -n 8 [ 16.163835] [ 16.164380] nfsv4 dns_resolver netconsole sr_mod cdromnepim - network pipemeter - version 0.53 To reproduce: git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git cd lkp-tests bin/lkp install job.yaml # job file is attached in this email bin/lkp run job.yaml Thanks, Kernel Test Robot