crash 8.0.0++ Copyright (C) 2002-2021 Red Hat, Inc. Copyright (C) 2004, 2005, 2006, 2010 IBM Corporation Copyright (C) 1999-2006 Hewlett-Packard Co Copyright (C) 2005, 2006, 2011, 2012 Fujitsu Limited Copyright (C) 2006, 2007 VA Linux Systems Japan K.K. Copyright (C) 2005, 2011, 2020-2021 NEC Corporation Copyright (C) 1999, 2002, 2007 Silicon Graphics, Inc. Copyright (C) 1999, 2000, 2001, 2002 Mission Critical Linux, Inc. Copyright (C) 2015, 2021 VMware, Inc. This program is free software, covered by the GNU General Public License, and you are welcome to change it and/or distribute copies of it under certain conditions. Enter "help copying" to see the conditions. This program has absolutely no warranty. Enter "help warranty" for details. NOTE: stdin: not a tty GNU gdb (GDB) 10.2 Copyright (C) 2021 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-pc-linux-gnu". Type "show configuration" for configuration details. Find the GDB manual and other documentation resources online at: . For help, type "help". Type "apropos word" to search for commands related to "word"... please wait... (gathering kmem slab cache data) please wait... (gathering module symbol data) please wait... (gathering task table data) please wait... (determining panic task) KERNEL: /tmp/crash-anaysis.Gz9sp/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68896/testresults/sanity-compr-special4-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg620-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 09:14:34 EDT 2026 UPTIME: 00:05:35 LOAD AVERAGE: 1.56, 1.15, 0.52 TASKS: 349 NODENAME: oleg620-server.virtnet RELEASE: 4.18.0rh8.10-debug VERSION: #2 SMP Mon Jul 14 01:24:22 EDT 2025 MACHINE: x86_64 (2399 Mhz) MEMORY: 4.1 GB PANIC: "BUG: unable to handle kernel NULL pointer dereference at 000000000000002e" PID: 6692 COMMAND: "ll_ost_io00_000" TASK: ffff9066b2a3a7c0 [THREAD_INFO: ffff9066b2a3a7c0] CPU: 1 STATE: TASK_RUNNING (PANIC) Setting scroll off while initializing PyKdump /usr/local/crash/mpykdump.so: shared object loaded ./lustre.so: shared object loaded mod: cannot find or load object file for sha512_generic module mod: cannot find or load object file for sha512_ssse3 module mod: cannot find or load object file for dm_mod module mod: cannot find or load object file for dm_log module mod: cannot find or load object file for dm_region_hash module mod: cannot find or load object file for dm_mirror module mod: cannot find or load object file for libata module mod: cannot find or load object file for ghash_clmulni_intel module mod: cannot find or load object file for crct10dif_pclmul module mod: cannot find or load object file for crc32_pclmul module mod: cannot find or load object file for i2c_piix4 module mod: cannot find or load object file for pcspkr module mod: cannot find or load object file for ata_piix module mod: cannot find or load object file for crc32c_intel module mod: cannot find or load object file for serio_raw module mod: cannot find or load object file for intel_rapl_msr module mod: cannot find or load object file for dns_resolver module mod: cannot find or load object file for ata_generic module mod: cannot find or load object file for squashfs module mod: cannot find or load object file for sb_edac module mod: cannot find or load object file for rpcsec_gss_krb5 module mod: cannot find or load object file for rapl module mod: cannot find or load object file for intel_rapl_common module mod: cannot find or load object file for nfsv4 module mod: cannot find or load object file for auth_rpcgss module MODULE NAME BASE SIZE OBJECT FILE ffffffffc049e740 libcfs ffffffffc047e000 225280 /tmp/crash-anaysis.Gz9sp/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0ec03c0 lnet ffffffffc0de5000 1490944 /tmp/crash-anaysis.Gz9sp/modules/lnet.ko ffffffffc0f7b900 ksocklnd ffffffffc0f52000 270336 /tmp/crash-anaysis.Gz9sp/modules/ksocklnd.ko ffffffffc10dc0c0 obdclass ffffffffc0f95000 4415488 /tmp/crash-anaysis.Gz9sp/modules/obdclass.ko ffffffffc16580c0 ptlrpc ffffffffc13cc000 4173824 /tmp/crash-anaysis.Gz9sp/modules/ptlrpc.ko ffffffffc1816880 ptlrpc_gss ffffffffc17c8000 524288 /tmp/crash-anaysis.Gz9sp/modules/ptlrpc_gss.ko ffffffffc185bc80 fld ffffffffc1849000 126976 /tmp/crash-anaysis.Gz9sp/modules/fld.ko ffffffffc187bac0 fid ffffffffc1869000 126976 /tmp/crash-anaysis.Gz9sp/modules/fid.ko ffffffffc189b740 ec ffffffffc1889000 81920 /tmp/crash-anaysis.Gz9sp/modules/ec.ko ffffffffc18db080 lmv ffffffffc189e000 372736 /tmp/crash-anaysis.Gz9sp/modules/lmv.ko ffffffffc197c380 osc ffffffffc18fa000 790528 /tmp/crash-anaysis.Gz9sp/modules/osc.ko ffffffffc1a14a00 lov ffffffffc19bc000 552960 /tmp/crash-anaysis.Gz9sp/modules/lov.ko ffffffffc1a8eb80 mdc ffffffffc1a44000 466944 /tmp/crash-anaysis.Gz9sp/modules/mdc.ko ffffffffc1ad3000 mgc ffffffffc1ab7000 184320 /tmp/crash-anaysis.Gz9sp/modules/mgc.ko ffffffffc1b065c0 obdecho ffffffffc1ae5000 225280 /tmp/crash-anaysis.Gz9sp/modules/obdecho.ko ffffffffc1bd7340 lfsck ffffffffc1b1d000 1081344 /tmp/crash-anaysis.Gz9sp/modules/lfsck.ko ffffffffc1ca6240 lquota ffffffffc1c26000 786432 /tmp/crash-anaysis.Gz9sp/modules/lquota.ko ffffffffc1d52b80 osd_zfs ffffffffc1ce7000 659456 /tmp/crash-anaysis.Gz9sp/modules/osd_zfs.ko ffffffffc1dec400 mgs ffffffffc1d89000 626688 /tmp/crash-anaysis.Gz9sp/modules/mgs.ko ffffffffc1e9e080 mdd ffffffffc1e23000 745472 /tmp/crash-anaysis.Gz9sp/modules/mdd.ko ffffffffc1fe8900 mdt ffffffffc1eda000 1654784 /tmp/crash-anaysis.Gz9sp/modules/mdt.ko ffffffffc211a540 lod ffffffffc206f000 1056768 /tmp/crash-anaysis.Gz9sp/modules/lod.ko ffffffffc21e0e40 ofd ffffffffc2172000 688128 /tmp/crash-anaysis.Gz9sp/modules/ofd.ko ffffffffc2276f80 osp ffffffffc221b000 573440 /tmp/crash-anaysis.Gz9sp/modules/osp.ko ffffffffc23dc4c0 lustre ffffffffc22a8000 1908736 /tmp/crash-anaysis.Gz9sp/modules/lustre.ko lustre_walk_cpus(0, 5, 1) cmd p (*cfs_trace_data[0])[0].tcd.tcd_cur_pages // p (*cfs_trace_data[0])[0].tcd.tcd_pages.next lustre_walk_trace_pages(0, 5, 0xffff9066888a08c8) lustre_walk_cpus(0, 5, 2) cmd p (*cfs_trace_data[0])[0].tcd.tcd_cur_daemon_pages // p (*cfs_trace_data[0])[0].tcd.tcd_daemon_pages.next lustre: Dumped 114 debug pages from type 0 - CPU 0 lustre_walk_cpus(1, 5, 1) cmd p (*cfs_trace_data[0])[1].tcd.tcd_cur_pages // p (*cfs_trace_data[0])[1].tcd.tcd_pages.next lustre_walk_trace_pages(1, 5, 0xffff906691b0fa88) lustre_walk_cpus(1, 5, 2) cmd p (*cfs_trace_data[0])[1].tcd.tcd_cur_daemon_pages // p (*cfs_trace_data[0])[1].tcd.tcd_daemon_pages.next lustre: Dumped 109 debug pages from type 0 - CPU 1 lustre_walk_cpus(2, 5, 1) cmd p (*cfs_trace_data[0])[2].tcd.tcd_cur_pages // p (*cfs_trace_data[0])[2].tcd.tcd_pages.next lustre_walk_trace_pages(2, 5, 0xffff9066890002e8) lustre_walk_cpus(2, 5, 2) cmd p (*cfs_trace_data[0])[2].tcd.tcd_cur_daemon_pages // p (*cfs_trace_data[0])[2].tcd.tcd_daemon_pages.next lustre: Dumped 129 debug pages from type 0 - CPU 2 lustre_walk_cpus(3, 5, 1) cmd p (*cfs_trace_data[0])[3].tcd.tcd_cur_pages // p (*cfs_trace_data[0])[3].tcd.tcd_pages.next lustre_walk_trace_pages(3, 5, 0xffff9066964ecee8) lustre_walk_cpus(3, 5, 2) cmd p (*cfs_trace_data[0])[3].tcd.tcd_cur_daemon_pages // p (*cfs_trace_data[0])[3].tcd.tcd_daemon_pages.next lustre: Dumped 135 debug pages from type 0 - CPU 3 lustre_walk_cpus(0, 5, 1) cmd p (*cfs_trace_data[1])[0].tcd.tcd_cur_pages // p (*cfs_trace_data[1])[0].tcd.tcd_pages.next lustre_walk_cpus(0, 5, 2) cmd p (*cfs_trace_data[1])[0].tcd.tcd_cur_daemon_pages // p (*cfs_trace_data[1])[0].tcd.tcd_daemon_pages.next lustre: Dumped 0 debug pages from type 1 - CPU 0 lustre_walk_cpus(1, 5, 1) cmd p (*cfs_trace_data[1])[1].tcd.tcd_cur_pages // p (*cfs_trace_data[1])[1].tcd.tcd_pages.next lustre_walk_cpus(1, 5, 2) cmd p (*cfs_trace_data[1])[1].tcd.tcd_cur_daemon_pages // p (*cfs_trace_data[1])[1].tcd.tcd_daemon_pages.next lustre: Dumped 0 debug pages from type 1 - CPU 1 lustre_walk_cpus(2, 5, 1) cmd p (*cfs_trace_data[1])[2].tcd.tcd_cur_pages // p (*cfs_trace_data[1])[2].tcd.tcd_pages.next lustre_walk_cpus(2, 5, 2) cmd p (*cfs_trace_data[1])[2].tcd.tcd_cur_daemon_pages // p (*cfs_trace_data[1])[2].tcd.tcd_daemon_pages.next lustre: Dumped 0 debug pages from type 1 - CPU 2 lustre_walk_cpus(3, 5, 1) cmd p (*cfs_trace_data[1])[3].tcd.tcd_cur_pages // p (*cfs_trace_data[1])[3].tcd.tcd_pages.next lustre_walk_cpus(3, 5, 2) cmd p (*cfs_trace_data[1])[3].tcd.tcd_cur_daemon_pages // p (*cfs_trace_data[1])[3].tcd.tcd_daemon_pages.next lustre: Dumped 0 debug pages from type 1 - CPU 3 lustre_walk_cpus(0, 5, 1) cmd p (*cfs_trace_data[2])[0].tcd.tcd_cur_pages // p (*cfs_trace_data[2])[0].tcd.tcd_pages.next lustre_walk_cpus(0, 5, 2) cmd p (*cfs_trace_data[2])[0].tcd.tcd_cur_daemon_pages // p (*cfs_trace_data[2])[0].tcd.tcd_daemon_pages.next lustre: Dumped 0 debug pages from type 2 - CPU 0 lustre_walk_cpus(1, 5, 1) cmd p (*cfs_trace_data[2])[1].tcd.tcd_cur_pages // p (*cfs_trace_data[2])[1].tcd.tcd_pages.next lustre_walk_cpus(1, 5, 2) cmd p (*cfs_trace_data[2])[1].tcd.tcd_cur_daemon_pages // p (*cfs_trace_data[2])[1].tcd.tcd_daemon_pages.next lustre: Dumped 0 debug pages from type 2 - CPU 1 lustre_walk_cpus(2, 5, 1) cmd p (*cfs_trace_data[2])[2].tcd.tcd_cur_pages // p (*cfs_trace_data[2])[2].tcd.tcd_pages.next lustre_walk_cpus(2, 5, 2) cmd p (*cfs_trace_data[2])[2].tcd.tcd_cur_daemon_pages // p (*cfs_trace_data[2])[2].tcd.tcd_daemon_pages.next lustre: Dumped 0 debug pages from type 2 - CPU 2 lustre_walk_cpus(3, 5, 1) cmd p (*cfs_trace_data[2])[3].tcd.tcd_cur_pages // p (*cfs_trace_data[2])[3].tcd.tcd_pages.next lustre_walk_cpus(3, 5, 2) cmd p (*cfs_trace_data[2])[3].tcd.tcd_cur_daemon_pages // p (*cfs_trace_data[2])[3].tcd.tcd_daemon_pages.next lustre: Dumped 0 debug pages from type 2 - CPU 3 lustre: Dumped 487 total debug pages from 4 CPUs to /tmp/crash-anaysis.Gz9sp/lustre.bin