[mainline] [linux-next] [6.8-rc1] [FC] [DLPAR] OOps kernel crash after performing dlpar remove test

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Greetings,

[mainline] [linux-next] [6.8-rc1] [DLPAR] OOps kernel crash after performing dlpar remove test

--- Traces ---

[58563.146236] BUG: Unable to handle kernel data access at 0x6b6b6b6b6b6b6b83
[58563.146242] Faulting instruction address: 0xc0000000009c0e60
[58563.146248] Oops: Kernel access of bad area, sig: 11 [#1]
[58563.146252] LE PAGE_SIZE=64K MMU=Hash SMP NR_CPUS=8192 NUMA pSeries
[58563.146258] Modules linked in: isofs cdrom dm_snapshot dm_bufio dm_round_robin dm_queue_length exfat vfat fat btrfs blake2b_generic xor raid6_pq zstd_compress loop xfs libcrc32c raid0 nvram rpadlpar_io rpaphp nfnetlink xsk_diag bonding tls rfkill sunrpc dm_service_time dm_multipath dm_mod pseries_rng vmx_crypto binfmt_misc ext4 mbcache jbd2 sd_mod sg ibmvscsi scsi_transport_srp ibmveth lpfc nvmet_fc nvmet nvme_fc nvme_fabrics nvme_core t10_pi crc64_rocksoft crc64 scsi_transport_fc fuse [58563.146326] CPU: 0 PID: 1071247 Comm: drmgr Kdump: loaded Not tainted 6.8.0-rc1-auto-gecb1b8288dc7 #1 [58563.146332] Hardware name: IBM,9009-42A POWER9 (raw) 0x4e0202 0xf000005 of:IBM,FW950.A0 (VL950_141) hv:phyp pSeries [58563.146337] NIP:  c0000000009c0e60 LR: c0000000009c0e28 CTR: c0000000009c1584 [58563.146342] REGS: c00000007960f260 TRAP: 0380   Not tainted (6.8.0-rc1-auto-gecb1b8288dc7) [58563.146347] MSR:  8000000000009033 <SF,EE,ME,IR,DR,RI,LE>  CR: 24822424  XER: 20040006
[58563.146360] CFAR: c0000000009c0e74 IRQMASK: 0
[58563.146360] GPR00: c0000000009c0e28 c00000007960f500 c000000001482600 c000000003050540 [58563.146360] GPR04: 0000000000000000 c00000089a6870c0 0000000000000001 fffffffffffe0000 [58563.146360] GPR08: c000000002bac020 6b6b6b6b6b6b6b6b 6b6b6b6b6b6b6b6b 0000000000000220 [58563.146360] GPR12: 0000000000002000 c000000003080000 0000000000000000 0000000000000000 [58563.146360] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000001 [58563.146360] GPR20: c000000001281478 0000000000000000 c000000001281490 c000000002bfed80 [58563.146360] GPR24: c00000089a6870c0 0000000000000000 0000000000000000 c000000002b9ffb8 [58563.146360] GPR28: 0000000000000000 c000000002bac0e8 0000000000000000 0000000000000000
[58563.146421] NIP [c0000000009c0e60] iommu_ops_from_fwnode+0x68/0x118
[58563.146430] LR [c0000000009c0e28] iommu_ops_from_fwnode+0x30/0x118
[58563.146437] Call Trace:
[58563.146439] [c00000007960f500] [c00000007960f560] 0xc00000007960f560 (unreliable) [58563.146446] [c00000007960f530] [c0000000009c0fd0] __iommu_probe_device+0xc0/0x5c0 [58563.146454] [c00000007960f5a0] [c0000000009c151c] iommu_probe_device+0x4c/0xb4 [58563.146462] [c00000007960f5e0] [c0000000009c15d0] iommu_bus_notifier+0x4c/0x8c [58563.146469] [c00000007960f600] [c00000000019e3d0] notifier_call_chain+0xb8/0x1a0 [58563.146476] [c00000007960f660] [c00000000019eea0] blocking_notifier_call_chain+0x64/0x94
[58563.146483] [c00000007960f6a0] [c0000000009d3c5c] bus_notify+0x50/0x7c
[58563.146491] [c00000007960f6e0] [c0000000009cfba4] device_add+0x774/0x9bc
[58563.146498] [c00000007960f7a0] [c0000000008abe9c] pci_device_add+0x2f4/0x864 [58563.146506] [c00000007960f850] [c00000000007d5a0] of_create_pci_dev+0x390/0xa08 [58563.146514] [c00000007960f930] [c00000000007de68] __of_scan_bus+0x250/0x328 [58563.146520] [c00000007960fa10] [c00000000007a680] pcibios_scan_phb+0x274/0x3c0 [58563.146527] [c00000007960fae0] [c000000000105d58] init_phb_dynamic+0xb8/0x110 [58563.146535] [c00000007960fb50] [c0080000217b0380] dlpar_add_slot+0x170/0x3b4 [rpadlpar_io] [58563.146544] [c00000007960fbf0] [c0080000217b0ca0] add_slot_store+0xa4/0x140 [rpadlpar_io] [58563.146551] [c00000007960fc80] [c000000000f3dbec] kobj_attr_store+0x30/0x4c [58563.146559] [c00000007960fca0] [c0000000006931fc] sysfs_kf_write+0x68/0x7c [58563.146566] [c00000007960fcc0] [c000000000691b2c] kernfs_fop_write_iter+0x1c8/0x278
[58563.146573] [c00000007960fd10] [c000000000599f54] vfs_write+0x340/0x4cc
[58563.146580] [c00000007960fdc0] [c00000000059a2bc] ksys_write+0x7c/0x140
[58563.146587] [c00000007960fe10] [c000000000035d74] system_call_exception+0x134/0x330 [58563.146595] [c00000007960fe50] [c00000000000d6a0] system_call_common+0x160/0x2e4
[58563.146602] --- interrupt: c00 at 0x200004470cb4
[58563.146606] NIP:  0000200004470cb4 LR: 00002000043e7d04 CTR: 0000000000000000 [58563.146611] REGS: c00000007960fe80 TRAP: 0c00   Not tainted (6.8.0-rc1-auto-gecb1b8288dc7) [58563.146616] MSR:  800000000280f033 <SF,VEC,VSX,EE,PR,FP,ME,IR,DR,RI,LE>  CR: 24000282  XER: 00000000
[58563.146632] IRQMASK: 0
[58563.146632] GPR00: 0000000000000004 00007fffd3993420 0000200004557300 0000000000000007 [58563.146632] GPR04: 000001000d8a5270 0000000000000006 fffffffffbad2c80 000001000d8a02a0 [58563.146632] GPR08: 0000000000000001 0000000000000000 0000000000000000 0000000000000000 [58563.146632] GPR12: 0000000000000000 000020000422bb50 0000000000000000 0000000000000000 [58563.146632] GPR16: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [58563.146632] GPR20: 0000000000000000 0000000000000000 0000000000000000 0000000000000000 [58563.146632] GPR24: 0000000106b41668 0000000000000000 0000000000000006 000001000d8a5270 [58563.146632] GPR28: 0000000000000006 000001000d8a02a0 000001000d8a5270 0000000000000006
[58563.146690] NIP [0000200004470cb4] 0x200004470cb4
[58563.146694] LR [00002000043e7d04] 0x2000043e7d04
[58563.146698] --- interrupt: c00
[58563.146701] Code: e9299a20 3d020173 39089a20 7fa94000 419e0038 e9490018 7fbf5000 409e0020 48000070 60000000 60000000 60000000 <e9490018> 7faaf840 419e0058 e9290000
[58563.146722] ---[ end trace 0000000000000000 ]---

--
Regards,
Tasmiya Nalatwad
IBM Linux Technology Center





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