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.BIsAP/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68887/testresults/sanity-compr-special2-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg252-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 13:37:49 EDT 2026 UPTIME: 00:07:49 LOAD AVERAGE: 2.07, 1.63, 0.83 TASKS: 402 NODENAME: oleg252-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: 7905 COMMAND: "dp_sync_taskq" TASK: ffff9814d6f927c0 [THREAD_INFO: ffff9814d6f927c0] CPU: 0 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 ata_generic module mod: cannot find or load object file for crct10dif_pclmul module mod: cannot find or load object file for pcspkr module mod: cannot find or load object file for rapl module mod: cannot find or load object file for ata_piix 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 i2c_piix4 module mod: cannot find or load object file for crc32_pclmul module mod: cannot find or load object file for ghash_clmulni_intel module mod: cannot find or load object file for squashfs module mod: cannot find or load object file for sb_edac module mod: cannot find or load object file for dns_resolver 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 mod: cannot find or load object file for rpcsec_gss_krb5 module MODULE NAME BASE SIZE OBJECT FILE ffffffffc042d740 libcfs ffffffffc040d000 225280 /tmp/crash-anaysis.BIsAP/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0e4f3c0 lnet ffffffffc0d74000 1490944 /tmp/crash-anaysis.BIsAP/modules/lnet.ko ffffffffc0f0a900 ksocklnd ffffffffc0ee1000 270336 /tmp/crash-anaysis.BIsAP/modules/ksocklnd.ko ffffffffc106b0c0 obdclass ffffffffc0f24000 4415488 /tmp/crash-anaysis.BIsAP/modules/obdclass.ko ffffffffc15e70c0 ptlrpc ffffffffc135b000 4173824 /tmp/crash-anaysis.BIsAP/modules/ptlrpc.ko ffffffffc17a5880 ptlrpc_gss ffffffffc1757000 524288 /tmp/crash-anaysis.BIsAP/modules/ptlrpc_gss.ko ffffffffc17eac80 fld ffffffffc17d8000 126976 /tmp/crash-anaysis.BIsAP/modules/fld.ko ffffffffc180aac0 fid ffffffffc17f8000 126976 /tmp/crash-anaysis.BIsAP/modules/fid.ko ffffffffc182a740 ec ffffffffc1818000 81920 /tmp/crash-anaysis.BIsAP/modules/ec.ko ffffffffc186a080 lmv ffffffffc182d000 372736 /tmp/crash-anaysis.BIsAP/modules/lmv.ko ffffffffc190b440 osc ffffffffc1889000 790528 /tmp/crash-anaysis.BIsAP/modules/osc.ko ffffffffc19a3a80 lov ffffffffc194b000 552960 /tmp/crash-anaysis.BIsAP/modules/lov.ko ffffffffc1a1db80 mdc ffffffffc19d3000 466944 /tmp/crash-anaysis.BIsAP/modules/mdc.ko ffffffffc1a62000 mgc ffffffffc1a46000 184320 /tmp/crash-anaysis.BIsAP/modules/mgc.ko ffffffffc1a955c0 obdecho ffffffffc1a74000 225280 /tmp/crash-anaysis.BIsAP/modules/obdecho.ko ffffffffc1b66340 lfsck ffffffffc1aac000 1081344 /tmp/crash-anaysis.BIsAP/modules/lfsck.ko ffffffffc1c35240 lquota ffffffffc1bb5000 786432 /tmp/crash-anaysis.BIsAP/modules/lquota.ko ffffffffc1ce1b80 osd_zfs ffffffffc1c76000 659456 /tmp/crash-anaysis.BIsAP/modules/osd_zfs.ko ffffffffc1d7b400 mgs ffffffffc1d18000 626688 /tmp/crash-anaysis.BIsAP/modules/mgs.ko ffffffffc1e2d0c0 mdd ffffffffc1db2000 745472 /tmp/crash-anaysis.BIsAP/modules/mdd.ko ffffffffc1f77900 mdt ffffffffc1e69000 1654784 /tmp/crash-anaysis.BIsAP/modules/mdt.ko ffffffffc20a9680 lod ffffffffc1ffe000 1056768 /tmp/crash-anaysis.BIsAP/modules/lod.ko ffffffffc216fe40 ofd ffffffffc2101000 688128 /tmp/crash-anaysis.BIsAP/modules/ofd.ko ffffffffc2205f80 osp ffffffffc21aa000 573440 /tmp/crash-anaysis.BIsAP/modules/osp.ko ffffffffc236c580 lustre ffffffffc2237000 1912832 /tmp/crash-anaysis.BIsAP/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, 0xffff9814f2186688) 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 215 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, 0xffff9814c96dc8e8) 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 247 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, 0xffff9814c54bd068) 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 223 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, 0xffff9814c6266c08) 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 236 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 921 total debug pages from 4 CPUs to /tmp/crash-anaysis.BIsAP/lustre.bin