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.26WiC/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68908/testresults/sanity-compr-special6-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg629-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 10:41:33 EDT 2026 UPTIME: 00:06:45 LOAD AVERAGE: 1.99, 1.65, 0.80 TASKS: 404 NODENAME: oleg629-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: 7923 COMMAND: "dp_sync_taskq" TASK: ffff97f17ef88000 [THREAD_INFO: ffff97f17ef88000] 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 ghash_clmulni_intel module mod: cannot find or load object file for ata_generic 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 i2c_piix4 module mod: cannot find or load object file for serio_raw module mod: cannot find or load object file for pcspkr module mod: cannot find or load object file for ata_piix module mod: cannot find or load object file for dns_resolver module mod: cannot find or load object file for crc32c_intel module mod: cannot find or load object file for rapl module mod: cannot find or load object file for crct10dif_pclmul 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 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 ffffffffc05d1740 libcfs ffffffffc05b1000 225280 /tmp/crash-anaysis.26WiC/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0ff33c0 lnet ffffffffc0f18000 1490944 /tmp/crash-anaysis.26WiC/modules/lnet.ko ffffffffc10ae900 ksocklnd ffffffffc1085000 270336 /tmp/crash-anaysis.26WiC/modules/ksocklnd.ko ffffffffc120da80 obdclass ffffffffc10c8000 4403200 /tmp/crash-anaysis.26WiC/modules/obdclass.ko ffffffffc17880c0 ptlrpc ffffffffc14fc000 4173824 /tmp/crash-anaysis.26WiC/modules/ptlrpc.ko ffffffffc1946880 ptlrpc_gss ffffffffc18f8000 524288 /tmp/crash-anaysis.26WiC/modules/ptlrpc_gss.ko ffffffffc198bc80 fld ffffffffc1979000 126976 /tmp/crash-anaysis.26WiC/modules/fld.ko ffffffffc19abac0 fid ffffffffc1999000 126976 /tmp/crash-anaysis.26WiC/modules/fid.ko ffffffffc19cb740 ec ffffffffc19b9000 81920 /tmp/crash-anaysis.26WiC/modules/ec.ko ffffffffc1a0b080 lmv ffffffffc19ce000 372736 /tmp/crash-anaysis.26WiC/modules/lmv.ko ffffffffc1aac200 osc ffffffffc1a2a000 790528 /tmp/crash-anaysis.26WiC/modules/osc.ko ffffffffc1b44a00 lov ffffffffc1aec000 552960 /tmp/crash-anaysis.26WiC/modules/lov.ko ffffffffc1bbeb80 mdc ffffffffc1b74000 466944 /tmp/crash-anaysis.26WiC/modules/mdc.ko ffffffffc1c03000 mgc ffffffffc1be7000 184320 /tmp/crash-anaysis.26WiC/modules/mgc.ko ffffffffc1c365c0 obdecho ffffffffc1c15000 225280 /tmp/crash-anaysis.26WiC/modules/obdecho.ko ffffffffc1d07340 lfsck ffffffffc1c4d000 1081344 /tmp/crash-anaysis.26WiC/modules/lfsck.ko ffffffffc1dd6240 lquota ffffffffc1d56000 786432 /tmp/crash-anaysis.26WiC/modules/lquota.ko ffffffffc1e81ac0 osd_zfs ffffffffc1e17000 655360 /tmp/crash-anaysis.26WiC/modules/osd_zfs.ko ffffffffc1f1b400 mgs ffffffffc1eb8000 626688 /tmp/crash-anaysis.26WiC/modules/mgs.ko ffffffffc1fcd080 mdd ffffffffc1f52000 745472 /tmp/crash-anaysis.26WiC/modules/mdd.ko ffffffffc2117940 mdt ffffffffc2009000 1654784 /tmp/crash-anaysis.26WiC/modules/mdt.ko ffffffffc2249480 lod ffffffffc219e000 1052672 /tmp/crash-anaysis.26WiC/modules/lod.ko ffffffffc230eac0 ofd ffffffffc22a0000 684032 /tmp/crash-anaysis.26WiC/modules/ofd.ko ffffffffc23a3f80 osp ffffffffc2348000 573440 /tmp/crash-anaysis.26WiC/modules/osp.ko ffffffffc25096c0 lustre ffffffffc23d5000 1912832 /tmp/crash-anaysis.26WiC/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, 0xffff97f160fbaa68) 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 223 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, 0xffff97f1524d3da8) 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 227 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, 0xffff97f15294a748) 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 225 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, 0xffff97f149be8808) 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 245 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 920 total debug pages from 4 CPUs to /tmp/crash-anaysis.26WiC/lustre.bin