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. 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(determining panic task) KERNEL: /tmp/crash-anaysis.vJhjv/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68907/testresults/sanity-compr-special4-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg621-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 10:46:28 EDT 2026 UPTIME: 00:06:00 LOAD AVERAGE: 1.66, 1.43, 0.68 TASKS: 402 NODENAME: oleg621-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 0000000000000028" PID: 7906 COMMAND: "dp_sync_taskq" TASK: ffff978c05648000 [THREAD_INFO: ffff978c05648000] CPU: 2 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 pcspkr 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 ata_generic module mod: cannot find or load object file for i2c_piix4 module mod: cannot find or load object file for intel_rapl_msr module mod: cannot find or load object file for serio_raw module mod: cannot find or load object file for ata_piix module mod: cannot find or load object file for dns_resolver module mod: cannot find or load object file for crct10dif_pclmul module mod: cannot find or load object file for crc32c_intel module mod: cannot find or load object file for intel_rapl_common module mod: cannot find or load object file for crc32_pclmul module mod: cannot find or load object file for squashfs 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 sb_edac 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 ffffffffc05d3740 libcfs ffffffffc05b3000 225280 /tmp/crash-anaysis.vJhjv/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0ff53c0 lnet ffffffffc0f1a000 1490944 /tmp/crash-anaysis.vJhjv/modules/lnet.ko ffffffffc10b0900 ksocklnd ffffffffc1087000 270336 /tmp/crash-anaysis.vJhjv/modules/ksocklnd.ko ffffffffc1210f80 obdclass ffffffffc10ca000 4415488 /tmp/crash-anaysis.vJhjv/modules/obdclass.ko ffffffffc178d0c0 ptlrpc ffffffffc1501000 4173824 /tmp/crash-anaysis.vJhjv/modules/ptlrpc.ko ffffffffc194b880 ptlrpc_gss ffffffffc18fd000 524288 /tmp/crash-anaysis.vJhjv/modules/ptlrpc_gss.ko ffffffffc1990c80 fld ffffffffc197e000 126976 /tmp/crash-anaysis.vJhjv/modules/fld.ko ffffffffc19b0ac0 fid ffffffffc199e000 126976 /tmp/crash-anaysis.vJhjv/modules/fid.ko ffffffffc19d0740 ec ffffffffc19be000 81920 /tmp/crash-anaysis.vJhjv/modules/ec.ko ffffffffc1a10080 lmv ffffffffc19d3000 372736 /tmp/crash-anaysis.vJhjv/modules/lmv.ko ffffffffc1ab1200 osc ffffffffc1a2f000 790528 /tmp/crash-anaysis.vJhjv/modules/osc.ko ffffffffc1b49a00 lov ffffffffc1af1000 552960 /tmp/crash-anaysis.vJhjv/modules/lov.ko ffffffffc1bc3b80 mdc ffffffffc1b79000 466944 /tmp/crash-anaysis.vJhjv/modules/mdc.ko ffffffffc1c08000 mgc ffffffffc1bec000 184320 /tmp/crash-anaysis.vJhjv/modules/mgc.ko ffffffffc1c3b5c0 obdecho ffffffffc1c1a000 225280 /tmp/crash-anaysis.vJhjv/modules/obdecho.ko ffffffffc1d0c340 lfsck ffffffffc1c52000 1081344 /tmp/crash-anaysis.vJhjv/modules/lfsck.ko ffffffffc1ddb240 lquota ffffffffc1d5b000 786432 /tmp/crash-anaysis.vJhjv/modules/lquota.ko ffffffffc1e86ac0 osd_zfs ffffffffc1e1c000 655360 /tmp/crash-anaysis.vJhjv/modules/osd_zfs.ko ffffffffc1f20400 mgs ffffffffc1ebd000 626688 /tmp/crash-anaysis.vJhjv/modules/mgs.ko ffffffffc1fd2080 mdd ffffffffc1f57000 745472 /tmp/crash-anaysis.vJhjv/modules/mdd.ko ffffffffc211c940 mdt ffffffffc200e000 1654784 /tmp/crash-anaysis.vJhjv/modules/mdt.ko ffffffffc224e480 lod ffffffffc21a3000 1052672 /tmp/crash-anaysis.vJhjv/modules/lod.ko ffffffffc2314e40 ofd ffffffffc22a5000 692224 /tmp/crash-anaysis.vJhjv/modules/ofd.ko ffffffffc23aaf80 osp ffffffffc234f000 573440 /tmp/crash-anaysis.vJhjv/modules/osp.ko ffffffffc25106c0 lustre ffffffffc23dc000 1912832 /tmp/crash-anaysis.vJhjv/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, 0xffff978c0407e2c8) 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 166 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, 0xffff978c11963188) 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 181 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, 0xffff978c125e4ba8) 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 211 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, 0xffff978c13ad8c48) 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 213 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 771 total debug pages from 4 CPUs to /tmp/crash-anaysis.vJhjv/lustre.bin