------- Comment From pavra...@in.ibm.com 2016-10-19 08:37 EDT------- Hi, Tested with "4.8.0-25-generic" kernel from -proposed. Issue reported in bug is not observed, memory_stress_ng test got completed and system was up and running.
But got below call trace while running mlock test [ not consistent ] . Attaching logs. [ 5230.664871] Oops: Unrecoverable exception, sig: 6 [#1] [ 5230.664874] SMP NR_CPUS=2048 NUMA pSeries [ 5230.664878] Modules linked in: pseries_rng vmx_crypto ip_tables x_tables autofs4 ibmvscsi lpfc crc32c_vpmsum scsi_transport_fc [ 5230.664889] CPU: 8 PID: 5499 Comm: stress-ng-mlock Not tainted 4.8.0-25-generic #27-Ubuntu [ 5230.664893] task: c0000001b018c600 task.stack: c0000001ab288000 [ 5230.664895] NIP: c000000000009c64 LR: c000000000028d30 CTR: 0000000000000001 [ 5230.664899] REGS: c0000001ab28b9c0 TRAP: 0700 Not tainted (4.8.0-25-generic) [ 5230.664901] MSR: 8000000302a03031 <SF,VEC,VSX,FP,ME,IR,DR,LE,TM[SE]> CR: 44002428 XER: 20000000 [ 5230.664913] CFAR: c000000000009c30 SOFTE: 1 PACATMSCRATCH: 800000010280b033 GPR00: c000000000028d30 c0000001ab28bc40 c000000001476700 00003fffd12d2b38 GPR04: 0000000000001000 00003fffd12d1dc0 0000000000000000 c0000001b018d560 GPR08: 00003fff9deffb10 0000000000000000 0000000000000000 000c000000000000 GPR12: c0000001b018d110 c00000000fb84800 00000000000186a0 00003fffd12d34a8 GPR16: 00003fffd12d34a3 ffffffffffffffff ffffffffffffffff 0000000000000001 GPR20: 0000000000000000 000000002b168160 00003fff9c010010 000000002b1681a8 GPR24: 0000000000000000 c0000001b018cdd0 0000000000000005 00003fffd12d2b28 GPR28: c0000001ab28bd30 c0000001ab28bea0 0000000000000000 00003fffd12d1dc0 [ 5230.664961] NIP [c000000000009c64] fast_exception_return+0x94/0x9c [ 5230.664965] LR [c000000000028d30] handle_rt_signal64+0x80/0x790 [ 5230.664967] Call Trace: [ 5230.664970] [c0000001ab28bc40] [c000000000028d18] handle_rt_signal64+0x68/0x790 (unreliable) [ 5230.664978] [c0000001ab28bd10] [c00000000001b6d0] do_signal+0x1e0/0x2b0 [ 5230.664982] [c0000001ab28be00] [c00000000001b928] do_notify_resume+0xb8/0xd0 [ 5230.664986] [c0000001ab28be30] [c000000000009b44] ret_from_except_lite+0x70/0x74 [ 5230.664989] Instruction dump: [ 5230.664992] 7c40e3a6 e9a100d8 7c7b03a6 e84101a0 7c4ff120 e8410170 7c5a03a6 e8010070 [ 5230.664999] e8410080 e8610088 e8810090 e8210078 <4c000024> 48000000 e8610178 88ed023b [ 5230.665008] ---[ end trace 9f6fd8e3b185bfb5 ]--- [ 5230.697553] [ 5235.381161] systemd-journald[603]: /dev/kmsg buffer overrun, some messages lost. stress-ng: info: [5310] unsuccessful run completed in 307.27s (5 mins, 7.27 secs) return_code is 2 ***************************************************************** ** Error 2 reported on stressor mlock!) ***************************************************************** Thanks, Pavithra -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1628976 Title: Ubuntu 16.10: Oops panic in move_page_tables/page_remove_rmap after running memory_stress_ng. Status in linux package in Ubuntu: Fix Committed Status in linux source package in Trusty: Fix Committed Status in linux source package in Xenial: Fix Committed Status in linux source package in Yakkety: Fix Committed Bug description: FYI Canonical: We have been seeing various page handling issues during memory stress in the 4.8 kernels. The following is the most recent issue resulting in system panics on this host after the 4.8.0-17 update: == Comment: #17 - PAVITHRA R. PRAKASH - 2016-09-28 06:26:21 == Hi, Tried running on 4.8.0-17-generic kernel. Getting below call trace and system crashes. Attaching logs. [ 2959.364333] Unable to handle kernel paging request for data at address 0xf000000002fe4020 [ 2959.364345] Faulting instruction address: 0xc0000000002bb2a0 [ 2959.364356] Oops: Kernel access of bad area, sig: 11 [#1] [ 2959.364364] SMP NR_CPUS=2048 NUMA pSeries [ 2959.364377] Modules linked in: rpadlpar_io rpaphp dccp_diag dccp tcp_diag udp_diag inet_diag unix_diag af_packet_diag netlink_diag bnx2x mdio libcrc32c pseries_rng vmx_crypto binfmt_misc ip_tables x_tables autofs4 ibmvscsi crc32c_vpmsum [ 2959.364441] CPU: 13 PID: 108 Comm: oom_reaper Not tainted 4.8.0-17-generic #19-Ubuntu [ 2959.364452] task: c0000004fbdf9c00 task.stack: c0000004fbe00000 [ 2959.364461] NIP: c0000000002bb2a0 LR: c000000000300618 CTR: c00000000009ca40 [ 2959.364471] REGS: c0000004fbe036e0 TRAP: 0300 Not tainted (4.8.0-17-generic) [ 2959.364481] MSR: 800000010280b033 <SF,VEC,VSX,EE,FP,ME,IR,DR,RI,LE,TM[E]> CR: 24028844 XER: 2000000c [ 2959.364526] CFAR: c000000000300614 DAR: f000000002fe4020 DSISR: 40000000 SOFTE: 1 GPR00: c000000000300618 c0000004fbe03960 c0000000014e5e00 f000000002fe4000 GPR04: 0000000000000001 0000000000000800 0000000000000000 c000000001665e00 GPR08: 00000000f900a196 0000000000000001 0000000002fe4000 0000000000000000 GPR12: 0000000000008800 c000000001b37500 0008000000000000 c1ffffffffffe7ff GPR16: c0000004f62a55f0 00003fff9a000000 00003fff99000000 0000000000000000 GPR20: c0000004fbe03b80 c0000004e0713800 8e017c33020000c0 0000000000010000 GPR24: c0000000fb3614c8 c0000000fce9d990 c0000000fce9d6e4 96a100f90b000040 GPR28: f000000002fe4000 c0000000fb3614c8 0000000000000001 f000000002fe4000 [ 2959.364673] NIP [c0000000002bb2a0] page_remove_rmap+0x30/0x4b0 [ 2959.364685] LR [c000000000300618] zap_huge_pmd+0xf8/0x480 [ 2959.364692] Call Trace: [ 2959.364699] [c0000004fbe03960] [c0000004fbe039a0] 0xc0000004fbe039a0 (unreliable) [ 2959.364714] [c0000004fbe039a0] [c000000000300618] zap_huge_pmd+0xf8/0x480 [ 2959.364726] [c0000004fbe039f0] [c0000000002a68d8] unmap_page_range+0xd08/0xee0 [ 2959.364740] [c0000004fbe03b20] [c00000000025c474] __oom_reap_task+0x204/0x2c0 [ 2959.364752] [c0000004fbe03c80] [c00000000025cda8] oom_reaper+0x1e8/0x300 [ 2959.364765] [c0000004fbe03d80] [c0000000000fd120] kthread+0x110/0x130 [ 2959.364778] [c0000004fbe03e30] [c0000000000098f0] ret_from_kernel_thread+0x5c/0x6c [ 2959.364788] Instruction dump: [ 2959.364796] 3c4c0123 3842ab90 7c0802a6 fba1ffe8 fbc1fff0 fbe1fff8 f8010010 f821ffc1 [ 2959.364821] 7c7f1b78 7c9e2378 60000000 60000000 <e95f0020> 71480001 392affff 40820008 [ 2959.364871] ---[ end trace 178b14c6911b70dc ]--- [ 2959.372762] [ 2959.372798] Sending IPI to other CPUs [ 2959.373834] IPI complete Thanks, Pavithra To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1628976/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
