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.8N8jy/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68907/testresults/sanity-compr-special6-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg249-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 10:43:03 EDT 2026 UPTIME: 00:07:04 LOAD AVERAGE: 1.87, 1.56, 0.78 TASKS: 397 NODENAME: oleg249-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: 7898 COMMAND: "dp_sync_taskq" TASK: ffff9ac9e4d64f80 [THREAD_INFO: ffff9ac9e4d64f80] 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 ghash_clmulni_intel 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 ata_generic module mod: cannot find or load object file for i2c_piix4 module mod: cannot find or load object file for serio_raw module mod: cannot find or load object file for ata_piix 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 rapl 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 intel_rapl_common 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 nfsv4 module mod: cannot find or load object file for auth_rpcgss module MODULE NAME BASE SIZE OBJECT FILE ffffffffc0433740 libcfs ffffffffc0413000 225280 /tmp/crash-anaysis.8N8jy/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0e553c0 lnet ffffffffc0d7a000 1490944 /tmp/crash-anaysis.8N8jy/modules/lnet.ko ffffffffc0f10900 ksocklnd ffffffffc0ee7000 270336 /tmp/crash-anaysis.8N8jy/modules/ksocklnd.ko ffffffffc1070f80 obdclass ffffffffc0f2a000 4415488 /tmp/crash-anaysis.8N8jy/modules/obdclass.ko ffffffffc15ed0c0 ptlrpc ffffffffc1361000 4173824 /tmp/crash-anaysis.8N8jy/modules/ptlrpc.ko ffffffffc17ab880 ptlrpc_gss ffffffffc175d000 524288 /tmp/crash-anaysis.8N8jy/modules/ptlrpc_gss.ko ffffffffc17f0c80 fld ffffffffc17de000 126976 /tmp/crash-anaysis.8N8jy/modules/fld.ko ffffffffc1810ac0 fid ffffffffc17fe000 126976 /tmp/crash-anaysis.8N8jy/modules/fid.ko ffffffffc1830740 ec ffffffffc181e000 81920 /tmp/crash-anaysis.8N8jy/modules/ec.ko ffffffffc1870080 lmv ffffffffc1833000 372736 /tmp/crash-anaysis.8N8jy/modules/lmv.ko ffffffffc1911200 osc ffffffffc188f000 790528 /tmp/crash-anaysis.8N8jy/modules/osc.ko ffffffffc19a9a00 lov ffffffffc1951000 552960 /tmp/crash-anaysis.8N8jy/modules/lov.ko ffffffffc1a23b80 mdc ffffffffc19d9000 466944 /tmp/crash-anaysis.8N8jy/modules/mdc.ko ffffffffc1a68000 mgc ffffffffc1a4c000 184320 /tmp/crash-anaysis.8N8jy/modules/mgc.ko ffffffffc1a9b5c0 obdecho ffffffffc1a7a000 225280 /tmp/crash-anaysis.8N8jy/modules/obdecho.ko ffffffffc1b6c340 lfsck ffffffffc1ab2000 1081344 /tmp/crash-anaysis.8N8jy/modules/lfsck.ko ffffffffc1c3b240 lquota ffffffffc1bbb000 786432 /tmp/crash-anaysis.8N8jy/modules/lquota.ko ffffffffc1ce6ac0 osd_zfs ffffffffc1c7c000 655360 /tmp/crash-anaysis.8N8jy/modules/osd_zfs.ko ffffffffc1d80400 mgs ffffffffc1d1d000 626688 /tmp/crash-anaysis.8N8jy/modules/mgs.ko ffffffffc1e32080 mdd ffffffffc1db7000 745472 /tmp/crash-anaysis.8N8jy/modules/mdd.ko ffffffffc1f7c940 mdt ffffffffc1e6e000 1654784 /tmp/crash-anaysis.8N8jy/modules/mdt.ko ffffffffc20ae480 lod ffffffffc2003000 1052672 /tmp/crash-anaysis.8N8jy/modules/lod.ko ffffffffc2174e40 ofd ffffffffc2105000 692224 /tmp/crash-anaysis.8N8jy/modules/ofd.ko ffffffffc220af80 osp ffffffffc21af000 573440 /tmp/crash-anaysis.8N8jy/modules/osp.ko ffffffffc23706c0 lustre ffffffffc223c000 1912832 /tmp/crash-anaysis.8N8jy/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, 0xffff9ac9c5954f08) 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 204 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, 0xffff9ac9c7cc8668) 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 207 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, 0xffff9ac9c8293a28) 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 227 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, 0xffff9ac9d6bf9088) 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 173 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 811 total debug pages from 4 CPUs to /tmp/crash-anaysis.8N8jy/lustre.bin