You have been subscribed to a public bug: Kernel crashes running large amounts of deployment using Ibmvscsis driver. Contact Information = Bryant Ly/b...@us.ibm.com Stack trace output: [ 1780.861532] Faulting instruction address: 0xc000000000583de0 [ 1780.861542] Oops: Kernel access of bad area, sig: 11 [#1] [ 1780.861549] SMP NR_CPUS=2048 NUMA pSeries [ 1780.861557] Modules linked in: ip6table_filter ip6_tables xt_tcpudp iptable_mangle ebt_arp ebt_among ebtable_filter ebtables iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack iptable_filter ip_tables x_tables bridge stp llc target_core_user uio target_core_pscsi target_core_file dccp_diag target_core_iblock iscsi_target_mod dccp tcp_diag udp_diag inet_diag unix_diag af_packet_diag netlink_diag binfmt_misc pseries_rng ibmvmc(OE) rtc_generic ib_iser rdma_cm iw_cm ib_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi autofs4 mlx4_en vxlan ip6_udp_tunnel udp_tunnel ses enclosure ibmvscsis target_core_mod configfs ibmveth mlx4_core megaraid_sas ahci libahci [ 1780.861707] CPU: 22 PID: 35128 Comm: tcmu-runner Tainted: G W OE 4.4.13-customv7 #22 [ 1780.861718] task: c0000001e6f50080 ti: c0000001e6fd0000 task.ti: c0000001e6fd0000 [ 1780.861727] NIP: c000000000583de0 LR: d0000000065c1b04 CTR: c000000000583da0 [ 1780.861736] REGS: c0000001e6fd3950 TRAP: 0300 Tainted: G W OE (4.4.13-customv7) [ 1780.861745] MSR: 8000000000009033 <SF,EE,ME,IR,DR,RI,LE> CR: 48004484 XER: 20000000 [ 1780.861770] CFAR: c000000000008468 DAR: 00000000000012a0 DSISR: 40000000 SOFTE: 0 GPR00: d0000000065c1974 c0000001e6fd3bd0 d0000000065cba00 0000000000001298 GPR04: 00000000000012b8 c0000001fe664468 0000000000000018 646920726f662064 GPR08: 0000000000000007 0000000000000001 0000000000001298 d0000000065c2870 GPR12: c000000000583da0 c000000007add100 0000000000000000 0000000000000000 GPR16: 00003fffae670000 0000000000000000 0000000000000002 0000000000000001 GPR20: c0000001e99032e8 0000000000000000 c0000001e9903300 f000000000000000 GPR24: c0000001e9903340 0000000000000000 d000000006600000 d000000006600080 GPR28: c0000001e9902000 0000000000000080 f000000000019800 c0000001fe664458 [ 1780.861901] NIP [c000000000583de0] __bitmap_xor+0x40/0x60 [ 1780.861910] LR [d0000000065c1b04] tcmu_handle_completions+0x394/0x510 [target_core_user] [ 1780.861919] Call Trace: [ 1780.861926] [c0000001e6fd3bd0] [d0000000065c1974] tcmu_handle_completions+0x204/0x510 [target_core_user] (unreliable) [ 1780.861942] [c0000001e6fd3cd0] [d0000000065c1cac] tcmu_irqcontrol+0x2c/0x50 [target_core_user] [ 1780.861956] [c0000001e6fd3d00] [d000000006561798] uio_write+0x98/0x140 [uio] [ 1780.861966] [c0000001e6fd3d50] [c0000000002dda0c] __vfs_write+0x6c/0xe0 [ 1780.861977] [c0000001e6fd3d90] [c0000000002de740] vfs_write+0xc0/0x230 [ 1780.861988] [c0000001e6fd3de0] [c0000000002df77c] SyS_write+0x6c/0x110 [ 1780.861999] [c0000001e6fd3e30] [c000000000009204] system_call+0x38/0xb4 [ 1780.862007] Instruction dump: [ 1780.862013] 78c60020 3944fff8 38c6ffff 38a5fff8 78c61f48 3863fff8 7c843214 48000014 [ 1780.862033] 60000000 60000000 60000000 60420000 <e92a0009> e9050009 7faa2040 7d294278 [ 1780.862056] ---[ end trace 212caf961ccdad3d ]---
A series of patches will fix this issue. ibmvscsis: Rearrange functions for future patches ibmvscsis: Synchronize cmds at tpg_enable_store time ibmvscsis: Synchronize cmds at remove time ibmvscsis: Clean up properly if target_submit_cmd/tmr fails ibmvscsis: Return correct partition name/# to client ibmvscsis: Issues from Dan Carpenter/Smatch http://www.spinics.net/lists/linux-scsi/msg100569.html The patch has been accepted and applied to 4.10/scsi-queue. scsi: ibmvscsis: Rearrange functions for future patches https://kernel.googlesource.com/pub/scm/linux/kernel/git/mkp/scsi/+/fbbcc033a20a6af94eeb8fa995668ed5051be111 scsi: ibmvscsis: Synchronize cmds at tpg_enable_store time https://kernel.googlesource.com/pub/scm/linux/kernel/git/mkp/scsi/+/f877a5398764ce18487c1a70f297743ae91a0e25 scsi: ibmvscsis: Synchronize cmds at remove time https://kernel.googlesource.com/pub/scm/linux/kernel/git/mkp/scsi/+/5dda944d439e295cadceb1e2d7f5b73f9dc2b296 scsi: ibmvscsis: Clean up properly if target_submit_cmd/tmr fails https://kernel.googlesource.com/pub/scm/linux/kernel/git/mkp/scsi/+/dcdf7ab322a304d52bfd3190d79337f09f05b3a5 scsi: ibmvscsis: Return correct partition name/# to client https://kernel.googlesource.com/pub/scm/linux/kernel/git/mkp/scsi/+/cb70442aebffd51a295ba99bc97a793d019efefe scsi: ibmvscsis: Issues from Dan Carpenter/Smatch https://kernel.googlesource.com/pub/scm/linux/kernel/git/mkp/scsi/+/4.10/scsi-queue So it would be great if it can be backported into 16.04 and 16.10? Thanks. ** Affects: linux (Ubuntu) Importance: Undecided Assignee: Taco Screen team (taco-screen-team) Status: New ** Tags: architecture-ppc64le bugnameltc-147639 severity-high targetmilestone-inin16041 -- Fix Kernel Crashing under IBM Virtual Scsi Driver https://bugs.launchpad.net/bugs/1642299 You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. -- 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
