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.crTuz/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68908/testresults/sanity-compr-special2-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg156-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 09:26:51 EDT 2026 UPTIME: 00:07:05 LOAD AVERAGE: 1.22, 1.36, 0.70 TASKS: 395 NODENAME: oleg156-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: 7902 COMMAND: "dp_sync_taskq" TASK: ffff974f83194f80 [THREAD_INFO: ffff974f83194f80] 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 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 crc32_pclmul 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 serio_raw module mod: cannot find or load object file for intel_rapl_msr module mod: cannot find or load object file for ata_piix module mod: cannot find or load object file for intel_rapl_common module mod: cannot find or load object file for crc32c_intel module mod: cannot find or load object file for crct10dif_pclmul module mod: cannot find or load object file for squashfs module mod: cannot find or load object file for dns_resolver module mod: cannot find or load object file for rpcsec_gss_krb5 module mod: cannot find or load object file for sb_edac module mod: cannot find or load object file for rapl 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 ffffffffc04a9740 libcfs ffffffffc0489000 225280 /tmp/crash-anaysis.crTuz/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0ecb3c0 lnet ffffffffc0df0000 1490944 /tmp/crash-anaysis.crTuz/modules/lnet.ko ffffffffc0f86900 ksocklnd ffffffffc0f5d000 270336 /tmp/crash-anaysis.crTuz/modules/ksocklnd.ko ffffffffc10e5a80 obdclass ffffffffc0fa0000 4403200 /tmp/crash-anaysis.crTuz/modules/obdclass.ko ffffffffc16600c0 ptlrpc ffffffffc13d4000 4173824 /tmp/crash-anaysis.crTuz/modules/ptlrpc.ko ffffffffc181e880 ptlrpc_gss ffffffffc17d0000 524288 /tmp/crash-anaysis.crTuz/modules/ptlrpc_gss.ko ffffffffc1863c80 fld ffffffffc1851000 126976 /tmp/crash-anaysis.crTuz/modules/fld.ko ffffffffc1883ac0 fid ffffffffc1871000 126976 /tmp/crash-anaysis.crTuz/modules/fid.ko ffffffffc18a3740 ec ffffffffc1891000 81920 /tmp/crash-anaysis.crTuz/modules/ec.ko ffffffffc18e3080 lmv ffffffffc18a6000 372736 /tmp/crash-anaysis.crTuz/modules/lmv.ko ffffffffc1984200 osc ffffffffc1902000 790528 /tmp/crash-anaysis.crTuz/modules/osc.ko ffffffffc1a1ca00 lov ffffffffc19c4000 552960 /tmp/crash-anaysis.crTuz/modules/lov.ko ffffffffc1a96b80 mdc ffffffffc1a4c000 466944 /tmp/crash-anaysis.crTuz/modules/mdc.ko ffffffffc1adb000 mgc ffffffffc1abf000 184320 /tmp/crash-anaysis.crTuz/modules/mgc.ko ffffffffc1b0e5c0 obdecho ffffffffc1aed000 225280 /tmp/crash-anaysis.crTuz/modules/obdecho.ko ffffffffc1bdf340 lfsck ffffffffc1b25000 1081344 /tmp/crash-anaysis.crTuz/modules/lfsck.ko ffffffffc1cae240 lquota ffffffffc1c2e000 786432 /tmp/crash-anaysis.crTuz/modules/lquota.ko ffffffffc1d59ac0 osd_zfs ffffffffc1cef000 655360 /tmp/crash-anaysis.crTuz/modules/osd_zfs.ko ffffffffc1df3400 mgs ffffffffc1d90000 626688 /tmp/crash-anaysis.crTuz/modules/mgs.ko ffffffffc1ea5080 mdd ffffffffc1e2a000 745472 /tmp/crash-anaysis.crTuz/modules/mdd.ko ffffffffc1fef940 mdt ffffffffc1ee1000 1654784 /tmp/crash-anaysis.crTuz/modules/mdt.ko ffffffffc2121480 lod ffffffffc2076000 1052672 /tmp/crash-anaysis.crTuz/modules/lod.ko ffffffffc21e6ac0 ofd ffffffffc2178000 684032 /tmp/crash-anaysis.crTuz/modules/ofd.ko ffffffffc227bf80 osp ffffffffc2220000 573440 /tmp/crash-anaysis.crTuz/modules/osp.ko ffffffffc23e16c0 lustre ffffffffc22ad000 1912832 /tmp/crash-anaysis.crTuz/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, 0xffff974f888852e8) 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 243 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, 0xffff974f881a16e8) 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 185 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, 0xffff974f91cd34a8) 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 254 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, 0xffff974f8827b808) 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 209 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 891 total debug pages from 4 CPUs to /tmp/crash-anaysis.crTuz/lustre.bin