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.MLpn3/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68883/testresults/sanity-compr-special4-zfs-rocky8.10_x86_64-rocky8.10_x86_64-retry1/oleg419-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 13:31:35 EDT 2026 UPTIME: 00:06:55 LOAD AVERAGE: 1.67, 1.29, 0.66 TASKS: 351 NODENAME: oleg419-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: 6502 COMMAND: "dp_sync_taskq" TASK: ffff90d108b827c0 [THREAD_INFO: ffff90d108b827c0] 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 ata_generic 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 rapl 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 i2c_piix4 module mod: cannot find or load object file for crc32_pclmul module mod: cannot find or load object file for sb_edac 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 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 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 ffffffffc0532740 libcfs ffffffffc0512000 225280 /tmp/crash-anaysis.MLpn3/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0f543c0 lnet ffffffffc0e79000 1490944 /tmp/crash-anaysis.MLpn3/modules/lnet.ko ffffffffc100f900 ksocklnd ffffffffc0fe6000 270336 /tmp/crash-anaysis.MLpn3/modules/ksocklnd.ko ffffffffc11700c0 obdclass ffffffffc1029000 4415488 /tmp/crash-anaysis.MLpn3/modules/obdclass.ko ffffffffc16ec0c0 ptlrpc ffffffffc1460000 4173824 /tmp/crash-anaysis.MLpn3/modules/ptlrpc.ko ffffffffc18aa880 ptlrpc_gss ffffffffc185c000 524288 /tmp/crash-anaysis.MLpn3/modules/ptlrpc_gss.ko ffffffffc18efc80 fld ffffffffc18dd000 126976 /tmp/crash-anaysis.MLpn3/modules/fld.ko ffffffffc190fac0 fid ffffffffc18fd000 126976 /tmp/crash-anaysis.MLpn3/modules/fid.ko ffffffffc192f740 ec ffffffffc191d000 81920 /tmp/crash-anaysis.MLpn3/modules/ec.ko ffffffffc196f080 lmv ffffffffc1932000 372736 /tmp/crash-anaysis.MLpn3/modules/lmv.ko ffffffffc1a10480 osc ffffffffc198e000 790528 /tmp/crash-anaysis.MLpn3/modules/osc.ko ffffffffc1aa8b00 lov ffffffffc1a50000 552960 /tmp/crash-anaysis.MLpn3/modules/lov.ko ffffffffc1b22b80 mdc ffffffffc1ad8000 466944 /tmp/crash-anaysis.MLpn3/modules/mdc.ko ffffffffc1b67000 mgc ffffffffc1b4b000 184320 /tmp/crash-anaysis.MLpn3/modules/mgc.ko ffffffffc1b9a5c0 obdecho ffffffffc1b79000 225280 /tmp/crash-anaysis.MLpn3/modules/obdecho.ko ffffffffc1c6b340 lfsck ffffffffc1bb1000 1081344 /tmp/crash-anaysis.MLpn3/modules/lfsck.ko ffffffffc1d3a240 lquota ffffffffc1cba000 786432 /tmp/crash-anaysis.MLpn3/modules/lquota.ko ffffffffc1de6b80 osd_zfs ffffffffc1d7b000 659456 /tmp/crash-anaysis.MLpn3/modules/osd_zfs.ko ffffffffc1e80400 mgs ffffffffc1e1d000 626688 /tmp/crash-anaysis.MLpn3/modules/mgs.ko ffffffffc1f320c0 mdd ffffffffc1eb7000 745472 /tmp/crash-anaysis.MLpn3/modules/mdd.ko ffffffffc207c900 mdt ffffffffc1f6e000 1654784 /tmp/crash-anaysis.MLpn3/modules/mdt.ko ffffffffc21b0900 lod ffffffffc2103000 1064960 /tmp/crash-anaysis.MLpn3/modules/lod.ko ffffffffc2276e40 ofd ffffffffc2208000 688128 /tmp/crash-anaysis.MLpn3/modules/ofd.ko ffffffffc230cf80 osp ffffffffc22b1000 573440 /tmp/crash-anaysis.MLpn3/modules/osp.ko ffffffffc2474780 lustre ffffffffc233e000 1925120 /tmp/crash-anaysis.MLpn3/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, 0xffff90d1053f22a8) 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 133 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, 0xffff90d103c523c8) 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 129 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, 0xffff90d10a44f648) 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 128 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, 0xffff90d11f2cf8e8) 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 122 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 512 total debug pages from 4 CPUs to /tmp/crash-anaysis.MLpn3/lustre.bin