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.ytX1h/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68907/testresults/sanity-compr-special2-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg258-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 10:47:34 EDT 2026 UPTIME: 00:07:12 LOAD AVERAGE: 2.03, 1.80, 0.93 TASKS: 397 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: 7932 COMMAND: "dp_sync_taskq" TASK: ffff9e02c60e27c0 [THREAD_INFO: ffff9e02c60e27c0] 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 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 pcspkr 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 serio_raw module mod: cannot find or load object file for i2c_piix4 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_piix 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 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 ffffffffc073cc80 fld ffffffffc072a000 126976 /tmp/crash-anaysis.ytX1h/modules/fld.ko ffffffffc075c740 ec ffffffffc074a000 81920 /tmp/crash-anaysis.ytX1h/modules/ec.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc10ad740 libcfs ffffffffc108d000 225280 /tmp/crash-anaysis.ytX1h/modules/libcfs.ko ffffffffc11a03c0 lnet ffffffffc10c5000 1490944 /tmp/crash-anaysis.ytX1h/modules/lnet.ko ffffffffc125b900 ksocklnd ffffffffc1232000 270336 /tmp/crash-anaysis.ytX1h/modules/ksocklnd.ko ffffffffc13bbf80 obdclass ffffffffc1275000 4415488 /tmp/crash-anaysis.ytX1h/modules/obdclass.ko ffffffffc19380c0 ptlrpc ffffffffc16ac000 4173824 /tmp/crash-anaysis.ytX1h/modules/ptlrpc.ko ffffffffc1af6880 ptlrpc_gss ffffffffc1aa8000 524288 /tmp/crash-anaysis.ytX1h/modules/ptlrpc_gss.ko ffffffffc1b3bac0 fid ffffffffc1b29000 126976 /tmp/crash-anaysis.ytX1h/modules/fid.ko ffffffffc1b86080 lmv ffffffffc1b49000 372736 /tmp/crash-anaysis.ytX1h/modules/lmv.ko ffffffffc1c27200 osc ffffffffc1ba5000 790528 /tmp/crash-anaysis.ytX1h/modules/osc.ko ffffffffc1cbfa00 lov ffffffffc1c67000 552960 /tmp/crash-anaysis.ytX1h/modules/lov.ko ffffffffc1d39b80 mdc ffffffffc1cef000 466944 /tmp/crash-anaysis.ytX1h/modules/mdc.ko ffffffffc1d7e000 mgc ffffffffc1d62000 184320 /tmp/crash-anaysis.ytX1h/modules/mgc.ko ffffffffc1db15c0 obdecho ffffffffc1d90000 225280 /tmp/crash-anaysis.ytX1h/modules/obdecho.ko ffffffffc1e82340 lfsck ffffffffc1dc8000 1081344 /tmp/crash-anaysis.ytX1h/modules/lfsck.ko ffffffffc1f51240 lquota ffffffffc1ed1000 786432 /tmp/crash-anaysis.ytX1h/modules/lquota.ko ffffffffc1ffcac0 osd_zfs ffffffffc1f92000 655360 /tmp/crash-anaysis.ytX1h/modules/osd_zfs.ko ffffffffc2096400 mgs ffffffffc2033000 626688 /tmp/crash-anaysis.ytX1h/modules/mgs.ko ffffffffc2148080 mdd ffffffffc20cd000 745472 /tmp/crash-anaysis.ytX1h/modules/mdd.ko ffffffffc2292940 mdt ffffffffc2184000 1654784 /tmp/crash-anaysis.ytX1h/modules/mdt.ko ffffffffc23c4480 lod ffffffffc2319000 1052672 /tmp/crash-anaysis.ytX1h/modules/lod.ko ffffffffc248ae40 ofd ffffffffc241b000 692224 /tmp/crash-anaysis.ytX1h/modules/ofd.ko ffffffffc2520f80 osp ffffffffc24c5000 573440 /tmp/crash-anaysis.ytX1h/modules/osp.ko ffffffffc26866c0 lustre ffffffffc2552000 1912832 /tmp/crash-anaysis.ytX1h/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, 0xffff9e02c4e0fc88) 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 228 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, 0xffff9e02e15fec88) 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 148 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, 0xffff9e02d23c1d68) 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 223 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, 0xffff9e02c862f548) 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 199 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 798 total debug pages from 4 CPUs to /tmp/crash-anaysis.ytX1h/lustre.bin