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.MdrWw/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68907/testresults/sanity-compr-special10-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg420-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 10:43:50 EDT 2026 UPTIME: 00:06:05 LOAD AVERAGE: 2.13, 1.36, 0.62 TASKS: 399 NODENAME: oleg420-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: 7924 COMMAND: "dp_sync_taskq" TASK: ffff939b108a27c0 [THREAD_INFO: ffff939b108a27c0] 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_region_hash module mod: cannot find or load object file for dm_log 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 serio_raw 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 ata_generic module mod: cannot find or load object file for ata_piix 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 intel_rapl_msr module mod: cannot find or load object file for crc32c_intel 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 rapl 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 nfsv4 module mod: cannot find or load object file for auth_rpcgss module MODULE NAME BASE SIZE OBJECT FILE ffffffffc05e8c80 fld ffffffffc05d6000 126976 /tmp/crash-anaysis.MdrWw/modules/fld.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0f55740 libcfs ffffffffc0f35000 225280 /tmp/crash-anaysis.MdrWw/modules/libcfs.ko ffffffffc10483c0 lnet ffffffffc0f6d000 1490944 /tmp/crash-anaysis.MdrWw/modules/lnet.ko ffffffffc1103900 ksocklnd ffffffffc10da000 270336 /tmp/crash-anaysis.MdrWw/modules/ksocklnd.ko ffffffffc1263f80 obdclass ffffffffc111d000 4415488 /tmp/crash-anaysis.MdrWw/modules/obdclass.ko ffffffffc17e00c0 ptlrpc ffffffffc1554000 4173824 /tmp/crash-anaysis.MdrWw/modules/ptlrpc.ko ffffffffc199e880 ptlrpc_gss ffffffffc1950000 524288 /tmp/crash-anaysis.MdrWw/modules/ptlrpc_gss.ko ffffffffc19e3ac0 fid ffffffffc19d1000 126976 /tmp/crash-anaysis.MdrWw/modules/fid.ko ffffffffc1a03740 ec ffffffffc19f1000 81920 /tmp/crash-anaysis.MdrWw/modules/ec.ko ffffffffc1a43080 lmv ffffffffc1a06000 372736 /tmp/crash-anaysis.MdrWw/modules/lmv.ko ffffffffc1ae4200 osc ffffffffc1a62000 790528 /tmp/crash-anaysis.MdrWw/modules/osc.ko ffffffffc1b7ca00 lov ffffffffc1b24000 552960 /tmp/crash-anaysis.MdrWw/modules/lov.ko ffffffffc1bf6b80 mdc ffffffffc1bac000 466944 /tmp/crash-anaysis.MdrWw/modules/mdc.ko ffffffffc1c3b000 mgc ffffffffc1c1f000 184320 /tmp/crash-anaysis.MdrWw/modules/mgc.ko ffffffffc1c6e5c0 obdecho ffffffffc1c4d000 225280 /tmp/crash-anaysis.MdrWw/modules/obdecho.ko ffffffffc1d3f340 lfsck ffffffffc1c85000 1081344 /tmp/crash-anaysis.MdrWw/modules/lfsck.ko ffffffffc1e0e240 lquota ffffffffc1d8e000 786432 /tmp/crash-anaysis.MdrWw/modules/lquota.ko ffffffffc1eb9ac0 osd_zfs ffffffffc1e4f000 655360 /tmp/crash-anaysis.MdrWw/modules/osd_zfs.ko ffffffffc1f53400 mgs ffffffffc1ef0000 626688 /tmp/crash-anaysis.MdrWw/modules/mgs.ko ffffffffc2005080 mdd ffffffffc1f8a000 745472 /tmp/crash-anaysis.MdrWw/modules/mdd.ko ffffffffc214f940 mdt ffffffffc2041000 1654784 /tmp/crash-anaysis.MdrWw/modules/mdt.ko ffffffffc2281480 lod ffffffffc21d6000 1052672 /tmp/crash-anaysis.MdrWw/modules/lod.ko ffffffffc2347e40 ofd ffffffffc22d8000 692224 /tmp/crash-anaysis.MdrWw/modules/ofd.ko ffffffffc23ddf80 osp ffffffffc2382000 573440 /tmp/crash-anaysis.MdrWw/modules/osp.ko ffffffffc25436c0 lustre ffffffffc240f000 1912832 /tmp/crash-anaysis.MdrWw/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, 0xffff939b051de348) 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 248 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, 0xffff939b10169a48) 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 177 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, 0xffff939b083dff88) 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 202 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, 0xffff939b04ffc528) 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 185 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 812 total debug pages from 4 CPUs to /tmp/crash-anaysis.MdrWw/lustre.bin