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.3EQM1/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68908/testresults/sanity-compr-special3-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg134-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 09:26:37 EDT 2026 UPTIME: 00:05:24 LOAD AVERAGE: 1.30, 1.04, 0.48 TASKS: 356 NODENAME: oleg134-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: 6464 COMMAND: "dp_sync_taskq" TASK: ffff8c54051f27c0 [THREAD_INFO: ffff8c54051f27c0] 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_region_hash module mod: cannot find or load object file for dm_log 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 serio_raw module mod: cannot find or load object file for ghash_clmulni_intel module mod: cannot find or load object file for crc32_pclmul 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 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 pcspkr module mod: cannot find or load object file for crc32c_intel 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 rapl 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 ffffffffc0620c80 fld ffffffffc060e000 126976 /tmp/crash-anaysis.3EQM1/modules/fld.ko ffffffffc0640740 ec ffffffffc062e000 81920 /tmp/crash-anaysis.3EQM1/modules/ec.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0f95740 libcfs ffffffffc0f75000 225280 /tmp/crash-anaysis.3EQM1/modules/libcfs.ko ffffffffc10883c0 lnet ffffffffc0fad000 1490944 /tmp/crash-anaysis.3EQM1/modules/lnet.ko ffffffffc1143900 ksocklnd ffffffffc111a000 270336 /tmp/crash-anaysis.3EQM1/modules/ksocklnd.ko ffffffffc12a2a80 obdclass ffffffffc115d000 4403200 /tmp/crash-anaysis.3EQM1/modules/obdclass.ko ffffffffc181d0c0 ptlrpc ffffffffc1591000 4173824 /tmp/crash-anaysis.3EQM1/modules/ptlrpc.ko ffffffffc19db880 ptlrpc_gss ffffffffc198d000 524288 /tmp/crash-anaysis.3EQM1/modules/ptlrpc_gss.ko ffffffffc1a20ac0 fid ffffffffc1a0e000 126976 /tmp/crash-anaysis.3EQM1/modules/fid.ko ffffffffc1a6b080 lmv ffffffffc1a2e000 372736 /tmp/crash-anaysis.3EQM1/modules/lmv.ko ffffffffc1b0c200 osc ffffffffc1a8a000 790528 /tmp/crash-anaysis.3EQM1/modules/osc.ko ffffffffc1ba4a00 lov ffffffffc1b4c000 552960 /tmp/crash-anaysis.3EQM1/modules/lov.ko ffffffffc1c1eb80 mdc ffffffffc1bd4000 466944 /tmp/crash-anaysis.3EQM1/modules/mdc.ko ffffffffc1c63000 mgc ffffffffc1c47000 184320 /tmp/crash-anaysis.3EQM1/modules/mgc.ko ffffffffc1c965c0 obdecho ffffffffc1c75000 225280 /tmp/crash-anaysis.3EQM1/modules/obdecho.ko ffffffffc1d67340 lfsck ffffffffc1cad000 1081344 /tmp/crash-anaysis.3EQM1/modules/lfsck.ko ffffffffc1e36240 lquota ffffffffc1db6000 786432 /tmp/crash-anaysis.3EQM1/modules/lquota.ko ffffffffc1ee1ac0 osd_zfs ffffffffc1e77000 655360 /tmp/crash-anaysis.3EQM1/modules/osd_zfs.ko ffffffffc1f7b400 mgs ffffffffc1f18000 626688 /tmp/crash-anaysis.3EQM1/modules/mgs.ko ffffffffc202d080 mdd ffffffffc1fb2000 745472 /tmp/crash-anaysis.3EQM1/modules/mdd.ko ffffffffc2177940 mdt ffffffffc2069000 1654784 /tmp/crash-anaysis.3EQM1/modules/mdt.ko ffffffffc22a9480 lod ffffffffc21fe000 1052672 /tmp/crash-anaysis.3EQM1/modules/lod.ko ffffffffc236eac0 ofd ffffffffc2300000 684032 /tmp/crash-anaysis.3EQM1/modules/ofd.ko ffffffffc2403f80 osp ffffffffc23a8000 573440 /tmp/crash-anaysis.3EQM1/modules/osp.ko ffffffffc25696c0 lustre ffffffffc2435000 1912832 /tmp/crash-anaysis.3EQM1/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, 0xffff8c5403549428) 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 118 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, 0xffff8c540334eae8) 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 139 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, 0xffff8c5441eea088) 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 166 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, 0xffff8c54103984e8) 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 126 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 549 total debug pages from 4 CPUs to /tmp/crash-anaysis.3EQM1/lustre.bin