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.8KZzM/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68883/testresults/sanity-compr-special8-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg233-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 13:30:24 EDT 2026 UPTIME: 00:08:47 LOAD AVERAGE: 1.67, 1.78, 0.97 TASKS: 402 NODENAME: oleg233-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: 7960 COMMAND: "dp_sync_taskq" TASK: ffff944846ea27c0 [THREAD_INFO: ffff944846ea27c0] CPU: 3 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 crct10dif_pclmul module mod: cannot find or load object file for crc32_pclmul module mod: cannot find or load object file for ghash_clmulni_intel 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 crc32c_intel 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 ata_generic 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 rpcsec_gss_krb5 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 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 ffffffffc045d740 libcfs ffffffffc043d000 225280 /tmp/crash-anaysis.8KZzM/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0e7d3c0 lnet ffffffffc0da2000 1490944 /tmp/crash-anaysis.8KZzM/modules/lnet.ko ffffffffc0f38900 ksocklnd ffffffffc0f0f000 270336 /tmp/crash-anaysis.8KZzM/modules/ksocklnd.ko ffffffffc10990c0 obdclass ffffffffc0f52000 4415488 /tmp/crash-anaysis.8KZzM/modules/obdclass.ko ffffffffc16150c0 ptlrpc ffffffffc1389000 4173824 /tmp/crash-anaysis.8KZzM/modules/ptlrpc.ko ffffffffc17d3880 ptlrpc_gss ffffffffc1785000 524288 /tmp/crash-anaysis.8KZzM/modules/ptlrpc_gss.ko ffffffffc1818c80 fld ffffffffc1806000 126976 /tmp/crash-anaysis.8KZzM/modules/fld.ko ffffffffc1838ac0 fid ffffffffc1826000 126976 /tmp/crash-anaysis.8KZzM/modules/fid.ko ffffffffc1858740 ec ffffffffc1846000 81920 /tmp/crash-anaysis.8KZzM/modules/ec.ko ffffffffc1898080 lmv ffffffffc185b000 372736 /tmp/crash-anaysis.8KZzM/modules/lmv.ko ffffffffc1939480 osc ffffffffc18b7000 790528 /tmp/crash-anaysis.8KZzM/modules/osc.ko ffffffffc19d1b00 lov ffffffffc1979000 552960 /tmp/crash-anaysis.8KZzM/modules/lov.ko ffffffffc1a4bb80 mdc ffffffffc1a01000 466944 /tmp/crash-anaysis.8KZzM/modules/mdc.ko ffffffffc1a90000 mgc ffffffffc1a74000 184320 /tmp/crash-anaysis.8KZzM/modules/mgc.ko ffffffffc1ac35c0 obdecho ffffffffc1aa2000 225280 /tmp/crash-anaysis.8KZzM/modules/obdecho.ko ffffffffc1b94340 lfsck ffffffffc1ada000 1081344 /tmp/crash-anaysis.8KZzM/modules/lfsck.ko ffffffffc1c63240 lquota ffffffffc1be3000 786432 /tmp/crash-anaysis.8KZzM/modules/lquota.ko ffffffffc1d0fb80 osd_zfs ffffffffc1ca4000 659456 /tmp/crash-anaysis.8KZzM/modules/osd_zfs.ko ffffffffc1da9400 mgs ffffffffc1d46000 626688 /tmp/crash-anaysis.8KZzM/modules/mgs.ko ffffffffc1e5b0c0 mdd ffffffffc1de0000 745472 /tmp/crash-anaysis.8KZzM/modules/mdd.ko ffffffffc1fa5900 mdt ffffffffc1e97000 1654784 /tmp/crash-anaysis.8KZzM/modules/mdt.ko ffffffffc20d9900 lod ffffffffc202c000 1064960 /tmp/crash-anaysis.8KZzM/modules/lod.ko ffffffffc219fe40 ofd ffffffffc2131000 688128 /tmp/crash-anaysis.8KZzM/modules/ofd.ko ffffffffc2235f80 osp ffffffffc21da000 573440 /tmp/crash-anaysis.8KZzM/modules/osp.ko ffffffffc239d780 lustre ffffffffc2267000 1925120 /tmp/crash-anaysis.8KZzM/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, 0xffff9448522a56e8) 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 226 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, 0xffff9448452b6608) 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 259 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, 0xffff944846c1d4c8) 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 199 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, 0xffff94484551d0a8) 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 243 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 927 total debug pages from 4 CPUs to /tmp/crash-anaysis.8KZzM/lustre.bin