Details
-
Bug
-
Resolution: Unresolved
-
Major
-
None
-
Lustre 2.16.0
-
None
-
2
-
9223372036854775807
Description
it seem that there is a regression in patch for LU-16954 for old RHEL kernel below. When Lustre is unmounted, the client gets a crash. This happened in RHEL8.2 kernel, but RHEL8.6 worked OK. when reverts patch https://review.whamcloud.com/#/c/fs/lustre-release/+/51955/, it avoided crash.
[ 529.525487] Lustre: Unmounted scratch-client [ 529.525921] BUG: unable to handle kernel NULL pointer dereference at 0000000000000070 [ 529.534682] PGD 0 [ 529.536921] Oops: 0000 [#1] SMP NOPTI [ 529.541013] CPU: 11 PID: 1547 Comm: kworker/u289:8 Kdump: loaded Tainted: P OE --------- -t - 4.18.0-193.el8.x86_64 #1 [ 529.554234] Hardware name: Supermicro SYS-420GP-TNAR-LC6-FL02T/X12DGO-6, BIOS 1.4 10/28/2022 [ 529.563669] Workqueue: writeback wb_workfn [ 529.568247] RIP: 0010:wb_workfn+0x3b/0x400 [ 529.572823] Code: 55 41 54 55 53 48 89 fb 48 83 ec 58 65 48 8b 04 25 28 00 00 00 48 89 44 24 50 31 c0 48 8b 87 70 fe ff ff 48 8b 80 18 04 00 00 <48> 8b 70 70 48 85 f6 75 04 48 8b 70 10 48 c7 c7 63 7b 8b a6 e8 4c [ 529.593814] RSP: 0018:ff5d96a64ff6fe10 EFLAGS: 00010246 [ 529.599654] RAX: 0000000000000000 RBX: ff426a0e091ee1e8 RCX: ff5d96a64e35bd68 [ 529.607631] RDX: 0000000000000001 RSI: ff426a0e091ee1f0 RDI: ff426a0e091ee1e8 [ 529.615608] RBP: ff42698fc7c1fc00 R08: 0000000000000008 R09: 000000000000006b [ 529.623584] R10: 8080808080808080 R11: 0000000000000010 R12: ff4269c83e451700 [ 529.631560] R13: 0000000000000000 R14: ff426a0e091ee058 R15: ff426a0e091ee1f0 [ 529.639535] FS: 0000000000000000(0000) GS:ff4269ce3f0c0000(0000) knlGS:0000000000000000 [ 529.648579] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 529.654999] CR2: 0000000000000070 CR3: 000000397d40a003 CR4: 0000000000761ee0 [ 529.662975] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 529.670951] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 529.678926] PKRU: 55555554 [ 529.681938] Call Trace: [ 529.684665] ? __switch_to_asm+0x41/0x70 [ 529.689049] ? __switch_to_asm+0x35/0x70 [ 529.693432] ? __switch_to_asm+0x41/0x70 [ 529.697817] ? __switch_to+0x7a/0x3f0 [ 529.701909] process_one_work+0x1a7/0x3b0 [ 529.706390] worker_thread+0x1cf/0x390 [ 529.710580] ? create_worker+0x1a0/0x1a0 [ 529.714962] kthread+0x112/0x130 [ 529.718567] ? kthread_flush_work_fn+0x10/0x10 [ 529.723534] ret_from_fork+0x1f/0x40 [ 529.727528] Modules linked in: mgc(OE) lustre(OE) mdc(OE) fid(OE) lov(OE) osc(OE) lmv(OE) fld(OE) ko2iblnd(OE) ptlrpc(OE) obdclass(OE) lnet(OE) libcfs(OE) nft_chain_route_ipv4 xt_CHECKSUM nft_chain_nat_ipv4 ipt_MASQUERADE nf_nat_ipv4 nf_nat ipt_REJECT nf_reject_ipv4 tun bridge stp llc nvidia_peermem(POE) rdma_ucm(OE) rdma_cm(OE) iw_cm(OE) socwatch2_15(OE) vtsspp(OE) sep5(OE) socperf3(OE) nvidia_drm(POE) pax(OE) nvidia_modeset(POE) nvidia_uvm(OE) nvidia(POE) ib_ipoib(OE) ib_cm(OE) ib_umad(OE) esp6_offload esp6 esp4_offload esp4 intel_rapl_msr intel_rapl_common bonding nfit libnvdimm x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel nf_log_ipv4 nf_log_common kvm nf_conntrack_ipv4 nf_defrag_ipv4 irqbypass iTCO_wdt iTCO_vendor_support nft_limit ipmi_ssif ses crct10dif_pclmul enclosure crc32_pclmul ghash_clmulni_intel joydev pcspkr nft_counter xt_LOG mei_me xt_limit i2c_i801 mei xt_state ioatdma xt_conntrack nf_conntrack ipmi_si ipmi_devintf nft_compat ipmi_msghandler nf_tables nfnetlink [ 529.727555] acpi_power_meter acpi_pad acpi_cpufreq sunrpc vfat fat knem(OE) ip_tables xfs libcrc32c mlx5_ib(OE) rndis_host cdc_ether usbnet mii ib_uverbs(OE) ib_core(OE) sg ast drm_vram_helper drm_kms_helper syscopyarea sysfillrect sysimgblt mlx5_core(OE) crc32c_intel fb_sys_fops ttm ahci libahci nvme mlxfw(OE) drm mpt3sas igb libata tls(t) nvme_core raid_class dca psample scsi_transport_sas i2c_algo_bit mlx_compat(OE) [ 529.868285] CR2: 0000000000000070