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. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-pc-linux-gnu". Type "show configuration" for configuration details. Find the GDB manual and other documentation resources online at: . For help, type "help". Type "apropos word" to search for commands related to "word"... please wait... (gathering kmem slab cache data) please wait... (gathering module symbol data) please wait... (gathering task table data) please wait... (determining panic task) KERNEL: /tmp/crash-anaysis.KzLER/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68908/testresults/sanity-compr-special5-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg638-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 10:40:40 EDT 2026 UPTIME: 00:05:02 LOAD AVERAGE: 0.98, 0.82, 0.39 TASKS: 351 NODENAME: oleg638-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: 6499 COMMAND: "dp_sync_taskq" TASK: ffff99cb294fa7c0 [THREAD_INFO: ffff99cb294fa7c0] 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_mirror 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 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 i2c_piix4 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 ata_piix module mod: cannot find or load object file for ghash_clmulni_intel module mod: cannot find or load object file for pcspkr module mod: cannot find or load object file for crc32_pclmul module mod: cannot find or load object file for squashfs module mod: cannot find or load object file for rapl 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 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 ffffffffc06a3740 libcfs ffffffffc0683000 225280 /tmp/crash-anaysis.KzLER/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc10c53c0 lnet ffffffffc0fea000 1490944 /tmp/crash-anaysis.KzLER/modules/lnet.ko ffffffffc1180900 ksocklnd ffffffffc1157000 270336 /tmp/crash-anaysis.KzLER/modules/ksocklnd.ko ffffffffc12dfa80 obdclass ffffffffc119a000 4403200 /tmp/crash-anaysis.KzLER/modules/obdclass.ko ffffffffc185a0c0 ptlrpc ffffffffc15ce000 4173824 /tmp/crash-anaysis.KzLER/modules/ptlrpc.ko ffffffffc1a18880 ptlrpc_gss ffffffffc19ca000 524288 /tmp/crash-anaysis.KzLER/modules/ptlrpc_gss.ko ffffffffc1a5dc80 fld ffffffffc1a4b000 126976 /tmp/crash-anaysis.KzLER/modules/fld.ko ffffffffc1a7dac0 fid ffffffffc1a6b000 126976 /tmp/crash-anaysis.KzLER/modules/fid.ko ffffffffc1a9d740 ec ffffffffc1a8b000 81920 /tmp/crash-anaysis.KzLER/modules/ec.ko ffffffffc1add080 lmv ffffffffc1aa0000 372736 /tmp/crash-anaysis.KzLER/modules/lmv.ko ffffffffc1b7e200 osc ffffffffc1afc000 790528 /tmp/crash-anaysis.KzLER/modules/osc.ko ffffffffc1c16a00 lov ffffffffc1bbe000 552960 /tmp/crash-anaysis.KzLER/modules/lov.ko ffffffffc1c90b80 mdc ffffffffc1c46000 466944 /tmp/crash-anaysis.KzLER/modules/mdc.ko ffffffffc1cd5000 mgc ffffffffc1cb9000 184320 /tmp/crash-anaysis.KzLER/modules/mgc.ko ffffffffc1d085c0 obdecho ffffffffc1ce7000 225280 /tmp/crash-anaysis.KzLER/modules/obdecho.ko ffffffffc1dd9340 lfsck ffffffffc1d1f000 1081344 /tmp/crash-anaysis.KzLER/modules/lfsck.ko ffffffffc1ea8240 lquota ffffffffc1e28000 786432 /tmp/crash-anaysis.KzLER/modules/lquota.ko ffffffffc1f53ac0 osd_zfs ffffffffc1ee9000 655360 /tmp/crash-anaysis.KzLER/modules/osd_zfs.ko ffffffffc1fed400 mgs ffffffffc1f8a000 626688 /tmp/crash-anaysis.KzLER/modules/mgs.ko ffffffffc209f080 mdd ffffffffc2024000 745472 /tmp/crash-anaysis.KzLER/modules/mdd.ko ffffffffc21e9940 mdt ffffffffc20db000 1654784 /tmp/crash-anaysis.KzLER/modules/mdt.ko ffffffffc231b480 lod ffffffffc2270000 1052672 /tmp/crash-anaysis.KzLER/modules/lod.ko ffffffffc23e0ac0 ofd ffffffffc2372000 684032 /tmp/crash-anaysis.KzLER/modules/ofd.ko ffffffffc2475f80 osp ffffffffc241a000 573440 /tmp/crash-anaysis.KzLER/modules/osp.ko ffffffffc25db6c0 lustre ffffffffc24a7000 1912832 /tmp/crash-anaysis.KzLER/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, 0xffff99cb116f0808) 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 135 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, 0xffff99cb187609e8) 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 115 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, 0xffff99cb038f5868) 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 129 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, 0xffff99cb220823e8) 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 150 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 529 total debug pages from 4 CPUs to /tmp/crash-anaysis.KzLER/lustre.bin