------- Comment From [email protected] 2017-09-13 13:50 EDT------- (In reply to comment #36) > Hi > > Today I tested kdump with 16.10 on talclp3 > Access info : > HMC: hmc-lte2.isst.aus.stglabs.ibm.com (hscroot/abc123) > > Console Access: rmvterm -m talc -p talclp3;mkvterm -m talc -p talclp3; > > Logs: > > root@talclp3:~# echo c > /proc/sysrq-trigger > [ 424.180480] sysrq: SysRq : Trigger a crash > [ 424.180497] Unable to handle kernel paging request for data at address > 0x00000000 > [ 424.180500] Faulting instruction address: 0xc0000000006a2428 > [ 424.180504] Oops: Kernel access of bad area, sig: 11 [#1] > [ 424.180506] SMP NR_CPUS=2048 NUMA pSeries > [ 424.180509] Modules linked in: nfsv3 nfs_acl rpcsec_gss_krb5 auth_rpcgss > nfsv4 nfs lockd grace fscache rdma_ucm(OE) ib_ucm(OE) rdma_cm(OE) iw_cm(OE) > configfs ib_ipoib(OE) ib_cm(OE) ib_uverbs(OE) ib_umad(OE) mlx5_ib(OE) > mlx5_core(OE) mlx4_ib(OE) pseries_rng ib_core(OE) vmx_crypto binfmt_misc > dm_round_robin sunrpc dm_multipath knem(OE) ip_tables x_tables autofs4 btrfs > xor raid6_pq mlx4_en(OE) ibmvfc scsi_transport_fc ibmvscsi bnx2x > mlx4_core(OE) devlink mlx_compat(OE) > mdio libcrc32c be2net crc32c_vpmsum > [ 424.180541] CPU: 0 PID: 2733 Comm: bash Tainted: G OE > 4.8.0-59-generic #64-Ubuntu > [ 424.180545] task: c0000000b3d78600 task.stack: c0000000a2104000 > [ 424.180547] NIP: c0000000006a2428 LR: c0000000006a3478 CTR: > c0000000006a2400 > [ 424.180550] REGS: c0000000a21079f0 TRAP: 0300 Tainted: G OE > (4.8.0-59-generic) > [ 424.180553] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 28222222 > XER: 00000001 > [ 424.180560] CFAR: c000000000008750 DAR: 0000000000000000 DSISR: 42000000 > SOFTE: 1 > GPR00: c0000000006a3478 c0000000a2107c70 c000000001467500 0000000000000063 > GPR04: c0000000bd00aca0 c0000000bd01fb40 c00000017fd2e300 000000000000b240 > GPR08: 0000000000000007 0000000000000001 0000000000000000 0000000000000001 > GPR12: c0000000006a2400 c000000007b30000 0000000000000000 0000000022000000 > GPR16: 0000000010170dc8 000001000df90258 0000000010140528 00000000100c6f60 > GPR20: 0000000000000000 000000001017dd58 0000000010152bf0 000000001017b608 > GPR24: 00003ffff97be144 00003ffff97be140 c00000000137e6e0 0000000000000004 > GPR28: c00000000137eaa0 0000000000000063 c000000001332590 0000000000000000 > [ 424.180599] NIP [c0000000006a2428] sysrq_handle_crash+0x28/0x30 > [ 424.180602] LR [c0000000006a3478] __handle_sysrq+0xe8/0x280 > [ 424.180604] Call Trace: > [ 424.180606] [c0000000a2107c70] [c0000000006a3458] > __handle_sysrq+0xc8/0x280 (unreliable) > [ 424.180610] [c0000000a2107d10] [c0000000006a3bcc] > write_sysrq_trigger+0x6c/0x90 > [ 424.180614] [c0000000a2107d40] [c0000000003adb48] proc_reg_write+0x88/0xd0 > [ 424.180619] [c0000000a2107d70] [c0000000003105ac] __vfs_write+0x3c/0x70 > [ 424.180622] [c0000000a2107d90] [c000000000311814] vfs_write+0xd4/0x240 > [ 424.180625] [c0000000a2107de0] [c000000000313368] SyS_write+0x68/0x110 > [ 424.180629] [c0000000a2107e30] [c000000000009584] system_call+0x38/0xec > [ 424.180631] Instruction dump: > [ 424.180633] 60000000 60000000 3c4c00dc 38425100 7c0802a6 60000000 > 3d22001a 3949bc60 > [ 424.180639] 39200001 912a0000 7c0004ac 39400000 <992a0000> 4e800020 > 3c4c00dc 384250d0 > [ 424.180645] ---[ end trace 8fd1cd00c31ebdd4 ]--- > [ 424.183431] > [ 424.183450] Sending IPI to other CPUs > [ 424.183452] IPI complete > I'm in purgatory > -> smp_release_cpus() > spinning_secondaries = 47 > <- smp_release_cpus() > [ 0.184530] pci 002b:50:00.0: of_irq_parse_pci() failed with rc=-22 > [ 0.569039] Kernel panic - not syncing: Out of memory and no killable > processes... > [ 0.569039] > [ 0.569066] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.8.0-59-generic > #64-Ubuntu > [ 0.569069] Call Trace: > [ 0.569071] [c00000000d10b220] [c000000008b0fe4c] dump_stack+0xb0/0xf0 > (unreliable) > [ 0.569075] [c00000000d10b260] [c000000008b0bf58] panic+0x144/0x308 > [ 0.569078] [c00000000d10b2f0] [c000000008249c2c] > out_of_memory+0x48c/0x570 > [ 0.569082] [c00000000d10b3a0] [c000000008250ad8] > __alloc_pages_nodemask+0xdf8/0xe20 > [ 0.569086] [c00000000d10b560] [c0000000082c6da8] > alloc_page_interleave+0x58/0xc0 > [ 0.569089] [c00000000d10b5a0] [c0000000082c7678] > alloc_pages_current+0x168/0x1d0 > [ 0.569093] [c00000000d10b600] [c0000000082435e8] > __page_cache_alloc+0x118/0x160 > [ 0.569096] [c00000000d10b640] [c0000000082437b4] > pagecache_get_page+0x184/0x3c0 > [ 0.569100] [c00000000d10b6b0] [c000000008243a34] > grab_cache_page_write_begin+0x44/0x70 > [ 0.569103] [c00000000d10b6e0] [c00000000834bf6c] > simple_write_begin+0x4c/0x1b0 > [ 0.569107] [c00000000d10b730] [c000000008243264] > generic_perform_write+0x104/0x280 > [ 0.569111] [c00000000d10b7d0] [c000000008245540] > __generic_file_write_iter+0x1e0/0x230 > [ 0.569114] [c00000000d10b830] [c00000000824567c] > generic_file_write_iter+0xec/0x250 > [ 0.569118] [c00000000d10b870] [c00000000831050c] > new_sync_write+0xec/0x150 > [ 0.569121] [c00000000d10b900] [c000000008311814] vfs_write+0xd4/0x240 > [ 0.569124] [c00000000d10b950] [c000000008313368] SyS_write+0x68/0x110 > [ 0.569127] [c00000000d10b9a0] [c000000008ea5d0c] xwrite+0x4c/0xb0 > [ 0.569130] [c00000000d10b9e0] [c000000008ea5e60] do_copy+0xf0/0x170 > [ 0.569133] [c00000000d10ba10] [c000000008ea59c4] write_buffer+0x5c/0x88 > [ 0.569136] [c00000000d10ba40] [c000000008ea5a50] flush_buffer+0x60/0xec > [ 0.569140] [c00000000d10ba90] [c000000008eec4c8] __gunzip+0x378/0x47c > [ 0.569142] [c00000000d10bb10] [c000000008ea650c] > unpack_to_rootfs+0x1c8/0x338 > [ 0.569146] [c00000000d10bbc0] [c000000008ea688c] > populate_rootfs+0x94/0x17c > [ 0.569149] [c00000000d10bc40] [c00000000800b948] > do_one_initcall+0x68/0x1d0 > [ 0.569152] [c00000000d10bd00] [c000000008ea42e8] > kernel_init_freeable+0x278/0x360 > [ 0.569156] [c00000000d10bdc0] [c00000000800c1b4] kernel_init+0x24/0x170 > [ 0.569159] [c00000000d10be30] [c0000000080098f0] > ret_from_kernel_thread+0x5c/0x6c > [ 0.571060] ---[ end Kernel panic - not syncing: Out of memory and no > killable processes... > [ 0.571060]
Memory reserved for kdump was not good enough. Please spike the memory reserved for kdump (crashkernel=) till OOM issues are not seen anymore and report your observations: https://wiki.ubuntu.com/ppc64el/Recommendations#Crash_Kernel_recommendations Thanks Hari -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1635597 Title: Ubuntu16.10:talclp1: Kdump failed with multipath disk To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu-power-systems/+bug/1635597/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
