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.2M2rB/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68883/testresults/sanity-compr-special2-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg253-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 13:30:15 EDT 2026 UPTIME: 00:07:34 LOAD AVERAGE: 1.97, 1.75, 0.92 TASKS: 405 NODENAME: oleg253-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: 7909 COMMAND: "dp_sync_taskq" TASK: ffff910f483227c0 [THREAD_INFO: ffff910f483227c0] CPU: 3 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 crc32c_intel module mod: cannot find or load object file for crct10dif_pclmul module mod: cannot find or load object file for ata_generic module mod: cannot find or load object file for pcspkr 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 rapl module mod: cannot find or load object file for intel_rapl_msr module mod: cannot find or load object file for crc32_pclmul module mod: cannot find or load object file for dns_resolver module mod: cannot find or load object file for ghash_clmulni_intel module mod: cannot find or load object file for sb_edac module mod: cannot find or load object file for intel_rapl_common module mod: cannot find or load object file for ata_piix module mod: cannot find or load object file for squashfs module mod: cannot find or load object file for nfsv4 module mod: cannot find or load object file for auth_rpcgss module mod: cannot find or load object file for rpcsec_gss_krb5 module MODULE NAME BASE SIZE OBJECT FILE ffffffffc05ec740 libcfs ffffffffc05cc000 225280 /tmp/crash-anaysis.2M2rB/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc100e3c0 lnet ffffffffc0f33000 1490944 /tmp/crash-anaysis.2M2rB/modules/lnet.ko ffffffffc10c9900 ksocklnd ffffffffc10a0000 270336 /tmp/crash-anaysis.2M2rB/modules/ksocklnd.ko ffffffffc122a0c0 obdclass ffffffffc10e3000 4415488 /tmp/crash-anaysis.2M2rB/modules/obdclass.ko ffffffffc17a60c0 ptlrpc ffffffffc151a000 4173824 /tmp/crash-anaysis.2M2rB/modules/ptlrpc.ko ffffffffc1964880 ptlrpc_gss ffffffffc1916000 524288 /tmp/crash-anaysis.2M2rB/modules/ptlrpc_gss.ko ffffffffc19a9c80 fld ffffffffc1997000 126976 /tmp/crash-anaysis.2M2rB/modules/fld.ko ffffffffc19c9ac0 fid ffffffffc19b7000 126976 /tmp/crash-anaysis.2M2rB/modules/fid.ko ffffffffc19e9740 ec ffffffffc19d7000 81920 /tmp/crash-anaysis.2M2rB/modules/ec.ko ffffffffc1a29080 lmv ffffffffc19ec000 372736 /tmp/crash-anaysis.2M2rB/modules/lmv.ko ffffffffc1aca480 osc ffffffffc1a48000 790528 /tmp/crash-anaysis.2M2rB/modules/osc.ko ffffffffc1b62b00 lov ffffffffc1b0a000 552960 /tmp/crash-anaysis.2M2rB/modules/lov.ko ffffffffc1bdcb80 mdc ffffffffc1b92000 466944 /tmp/crash-anaysis.2M2rB/modules/mdc.ko ffffffffc1c21000 mgc ffffffffc1c05000 184320 /tmp/crash-anaysis.2M2rB/modules/mgc.ko ffffffffc1c545c0 obdecho ffffffffc1c33000 225280 /tmp/crash-anaysis.2M2rB/modules/obdecho.ko ffffffffc1d25340 lfsck ffffffffc1c6b000 1081344 /tmp/crash-anaysis.2M2rB/modules/lfsck.ko ffffffffc1df4240 lquota ffffffffc1d74000 786432 /tmp/crash-anaysis.2M2rB/modules/lquota.ko ffffffffc1ea0b80 osd_zfs ffffffffc1e35000 659456 /tmp/crash-anaysis.2M2rB/modules/osd_zfs.ko ffffffffc1f3a400 mgs ffffffffc1ed7000 626688 /tmp/crash-anaysis.2M2rB/modules/mgs.ko ffffffffc1fec0c0 mdd ffffffffc1f71000 745472 /tmp/crash-anaysis.2M2rB/modules/mdd.ko ffffffffc2136900 mdt ffffffffc2028000 1654784 /tmp/crash-anaysis.2M2rB/modules/mdt.ko ffffffffc226a900 lod ffffffffc21bd000 1064960 /tmp/crash-anaysis.2M2rB/modules/lod.ko ffffffffc2330e40 ofd ffffffffc22c2000 688128 /tmp/crash-anaysis.2M2rB/modules/ofd.ko ffffffffc23c6f80 osp ffffffffc236b000 573440 /tmp/crash-anaysis.2M2rB/modules/osp.ko ffffffffc252e780 lustre ffffffffc23f8000 1925120 /tmp/crash-anaysis.2M2rB/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, 0xffff910f60da9d68) 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 244 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, 0xffff910f513a7c28) 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 223 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, 0xffff910f50586408) 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 246 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, 0xffff910f627d9be8) 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 225 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 938 total debug pages from 4 CPUs to /tmp/crash-anaysis.2M2rB/lustre.bin