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.WqfoS/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68908/testresults/sanity-compr-special1-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg218-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 09:25:40 EDT 2026 UPTIME: 00:06:20 LOAD AVERAGE: 1.81, 1.43, 0.67 TASKS: 406 NODENAME: oleg218-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: 7920 COMMAND: "dp_sync_taskq" TASK: ffff9d0290c88000 [THREAD_INFO: ffff9d0290c88000] CPU: 1 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 serio_raw 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 pcspkr module mod: cannot find or load object file for rapl module mod: cannot find or load object file for crc32_pclmul 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 intel_rapl_msr 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 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 ffffffffc05a6740 libcfs ffffffffc0586000 225280 /tmp/crash-anaysis.WqfoS/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0fc83c0 lnet ffffffffc0eed000 1490944 /tmp/crash-anaysis.WqfoS/modules/lnet.ko ffffffffc1083900 ksocklnd ffffffffc105a000 270336 /tmp/crash-anaysis.WqfoS/modules/ksocklnd.ko ffffffffc11e2a80 obdclass ffffffffc109d000 4403200 /tmp/crash-anaysis.WqfoS/modules/obdclass.ko ffffffffc175d0c0 ptlrpc ffffffffc14d1000 4173824 /tmp/crash-anaysis.WqfoS/modules/ptlrpc.ko ffffffffc191b880 ptlrpc_gss ffffffffc18cd000 524288 /tmp/crash-anaysis.WqfoS/modules/ptlrpc_gss.ko ffffffffc1960c80 fld ffffffffc194e000 126976 /tmp/crash-anaysis.WqfoS/modules/fld.ko ffffffffc1980ac0 fid ffffffffc196e000 126976 /tmp/crash-anaysis.WqfoS/modules/fid.ko ffffffffc19a0740 ec ffffffffc198e000 81920 /tmp/crash-anaysis.WqfoS/modules/ec.ko ffffffffc19e0080 lmv ffffffffc19a3000 372736 /tmp/crash-anaysis.WqfoS/modules/lmv.ko ffffffffc1a81200 osc ffffffffc19ff000 790528 /tmp/crash-anaysis.WqfoS/modules/osc.ko ffffffffc1b19a00 lov ffffffffc1ac1000 552960 /tmp/crash-anaysis.WqfoS/modules/lov.ko ffffffffc1b93b80 mdc ffffffffc1b49000 466944 /tmp/crash-anaysis.WqfoS/modules/mdc.ko ffffffffc1bd8000 mgc ffffffffc1bbc000 184320 /tmp/crash-anaysis.WqfoS/modules/mgc.ko ffffffffc1c0b5c0 obdecho ffffffffc1bea000 225280 /tmp/crash-anaysis.WqfoS/modules/obdecho.ko ffffffffc1cdc340 lfsck ffffffffc1c22000 1081344 /tmp/crash-anaysis.WqfoS/modules/lfsck.ko ffffffffc1dab240 lquota ffffffffc1d2b000 786432 /tmp/crash-anaysis.WqfoS/modules/lquota.ko ffffffffc1e56ac0 osd_zfs ffffffffc1dec000 655360 /tmp/crash-anaysis.WqfoS/modules/osd_zfs.ko ffffffffc1ef0400 mgs ffffffffc1e8d000 626688 /tmp/crash-anaysis.WqfoS/modules/mgs.ko ffffffffc1fa2080 mdd ffffffffc1f27000 745472 /tmp/crash-anaysis.WqfoS/modules/mdd.ko ffffffffc20ec940 mdt ffffffffc1fde000 1654784 /tmp/crash-anaysis.WqfoS/modules/mdt.ko ffffffffc221e480 lod ffffffffc2173000 1052672 /tmp/crash-anaysis.WqfoS/modules/lod.ko ffffffffc22e3ac0 ofd ffffffffc2275000 684032 /tmp/crash-anaysis.WqfoS/modules/ofd.ko ffffffffc2378f80 osp ffffffffc231d000 573440 /tmp/crash-anaysis.WqfoS/modules/osp.ko ffffffffc24de6c0 lustre ffffffffc23aa000 1912832 /tmp/crash-anaysis.WqfoS/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, 0xffff9d028312b068) 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 250 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, 0xffff9d02900dd108) 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 203 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, 0xffff9d028a7eed48) 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 230 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, 0xffff9d02838c6208) 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 206 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 889 total debug pages from 4 CPUs to /tmp/crash-anaysis.WqfoS/lustre.bin