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.fLXz9/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68899/testresults/sanity-compr-special5-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg258-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 11:02:30 EDT 2026 UPTIME: 00:07:57 LOAD AVERAGE: 1.49, 1.50, 0.79 TASKS: 401 NODENAME: oleg258-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: 7937 COMMAND: "dp_sync_taskq" TASK: ffff9b7a7d7dcf80 [THREAD_INFO: ffff9b7a7d7dcf80] 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 serio_raw module mod: cannot find or load object file for crc32_pclmul 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 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 ghash_clmulni_intel 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 ata_piix 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 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 ffffffffc058c740 libcfs ffffffffc056c000 225280 /tmp/crash-anaysis.fLXz9/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0fae3c0 lnet ffffffffc0ed3000 1490944 /tmp/crash-anaysis.fLXz9/modules/lnet.ko ffffffffc1069900 ksocklnd ffffffffc1040000 270336 /tmp/crash-anaysis.fLXz9/modules/ksocklnd.ko ffffffffc11ca0c0 obdclass ffffffffc1083000 4415488 /tmp/crash-anaysis.fLXz9/modules/obdclass.ko ffffffffc17460c0 ptlrpc ffffffffc14ba000 4173824 /tmp/crash-anaysis.fLXz9/modules/ptlrpc.ko ffffffffc1904880 ptlrpc_gss ffffffffc18b6000 524288 /tmp/crash-anaysis.fLXz9/modules/ptlrpc_gss.ko ffffffffc1949c80 fld ffffffffc1937000 126976 /tmp/crash-anaysis.fLXz9/modules/fld.ko ffffffffc1969ac0 fid ffffffffc1957000 126976 /tmp/crash-anaysis.fLXz9/modules/fid.ko ffffffffc1989740 ec ffffffffc1977000 81920 /tmp/crash-anaysis.fLXz9/modules/ec.ko ffffffffc19c9080 lmv ffffffffc198c000 372736 /tmp/crash-anaysis.fLXz9/modules/lmv.ko ffffffffc1a6a340 osc ffffffffc19e8000 790528 /tmp/crash-anaysis.fLXz9/modules/osc.ko ffffffffc1b02a00 lov ffffffffc1aaa000 552960 /tmp/crash-anaysis.fLXz9/modules/lov.ko ffffffffc1b7cb80 mdc ffffffffc1b32000 466944 /tmp/crash-anaysis.fLXz9/modules/mdc.ko ffffffffc1bc1000 mgc ffffffffc1ba5000 184320 /tmp/crash-anaysis.fLXz9/modules/mgc.ko ffffffffc1bf45c0 obdecho ffffffffc1bd3000 225280 /tmp/crash-anaysis.fLXz9/modules/obdecho.ko ffffffffc1cc5340 lfsck ffffffffc1c0b000 1081344 /tmp/crash-anaysis.fLXz9/modules/lfsck.ko ffffffffc1d94240 lquota ffffffffc1d14000 786432 /tmp/crash-anaysis.fLXz9/modules/lquota.ko ffffffffc1e40b80 osd_zfs ffffffffc1dd5000 659456 /tmp/crash-anaysis.fLXz9/modules/osd_zfs.ko ffffffffc1eda400 mgs ffffffffc1e77000 626688 /tmp/crash-anaysis.fLXz9/modules/mgs.ko ffffffffc1f8c080 mdd ffffffffc1f11000 745472 /tmp/crash-anaysis.fLXz9/modules/mdd.ko ffffffffc20d6900 mdt ffffffffc1fc8000 1654784 /tmp/crash-anaysis.fLXz9/modules/mdt.ko ffffffffc2208540 lod ffffffffc215d000 1056768 /tmp/crash-anaysis.fLXz9/modules/lod.ko ffffffffc22cee00 ofd ffffffffc2260000 688128 /tmp/crash-anaysis.fLXz9/modules/ofd.ko ffffffffc2364f80 osp ffffffffc2309000 573440 /tmp/crash-anaysis.fLXz9/modules/osp.ko ffffffffc24ca4c0 lustre ffffffffc2396000 1908736 /tmp/crash-anaysis.fLXz9/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, 0xffff9b7a49cb9168) 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 205 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, 0xffff9b7a4a08e7e8) 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 194 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, 0xffff9b7a497f9ba8) 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 243 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, 0xffff9b7a5003c948) 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 209 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 851 total debug pages from 4 CPUs to /tmp/crash-anaysis.fLXz9/lustre.bin