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.8XWbi/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68247/testresults/conf-sanity-slow-106-ldiskfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg333-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 19 21:56:18 EDT 2026 UPTIME: 00:12:42 LOAD AVERAGE: 4.01, 2.71, 1.43 TASKS: 250 NODENAME: oleg333-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 0000000000000060" PID: 21846 COMMAND: "mdt00_006" TASK: ffff947604114f80 [THREAD_INFO: ffff947604114f80] 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_mirror 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 intel_rapl_msr 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 pcspkr 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 dns_resolver 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 squashfs 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 rapl 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 ffffffffc074b740 libcfs ffffffffc072b000 225280 /tmp/crash-anaysis.8XWbi/modules/libcfs.ko mod: cannot find or load object file for dm_flakey module ffffffffc087c3c0 lnet ffffffffc07a1000 1490944 /tmp/crash-anaysis.8XWbi/modules/lnet.ko ffffffffc0937900 ksocklnd ffffffffc090e000 270336 /tmp/crash-anaysis.8XWbi/modules/ksocklnd.ko ffffffffc0a92fc0 obdclass ffffffffc0951000 4374528 /tmp/crash-anaysis.8XWbi/modules/obdclass.ko ffffffffc100b080 ptlrpc ffffffffc0d7e000 4182016 /tmp/crash-anaysis.8XWbi/modules/ptlrpc.ko ffffffffc11ca880 ptlrpc_gss ffffffffc117c000 524288 /tmp/crash-anaysis.8XWbi/modules/ptlrpc_gss.ko ffffffffc120fc80 fld ffffffffc11fd000 126976 /tmp/crash-anaysis.8XWbi/modules/fld.ko ffffffffc122fac0 fid ffffffffc121d000 126976 /tmp/crash-anaysis.8XWbi/modules/fid.ko ffffffffc124f740 ec ffffffffc123d000 81920 /tmp/crash-anaysis.8XWbi/modules/ec.ko ffffffffc128f080 lmv ffffffffc1252000 372736 /tmp/crash-anaysis.8XWbi/modules/lmv.ko ffffffffc1325e00 osc ffffffffc12ae000 729088 /tmp/crash-anaysis.8XWbi/modules/osc.ko ffffffffc13b8780 lov ffffffffc1361000 548864 /tmp/crash-anaysis.8XWbi/modules/lov.ko ffffffffc1432b80 mdc ffffffffc13e8000 466944 /tmp/crash-anaysis.8XWbi/modules/mdc.ko ffffffffc1477000 mgc ffffffffc145b000 184320 /tmp/crash-anaysis.8XWbi/modules/mgc.ko ffffffffc14aa5c0 obdecho ffffffffc1489000 225280 /tmp/crash-anaysis.8XWbi/modules/obdecho.ko ffffffffc157b0c0 lfsck ffffffffc14c1000 1077248 /tmp/crash-anaysis.8XWbi/modules/lfsck.ko ffffffffc1649200 lquota ffffffffc15c9000 786432 /tmp/crash-anaysis.8XWbi/modules/lquota.ko ffffffffc1796280 ldiskfs ffffffffc168a000 1679360 /tmp/crash-anaysis.8XWbi/modules/ldiskfs.ko ffffffffc18c6c00 osd_ldiskfs ffffffffc1825000 995328 /tmp/crash-anaysis.8XWbi/modules/osd_ldiskfs.ko ffffffffc197c400 mgs ffffffffc1919000 626688 /tmp/crash-anaysis.8XWbi/modules/mgs.ko ffffffffc1a2e080 mdd ffffffffc19b3000 745472 /tmp/crash-anaysis.8XWbi/modules/mdd.ko ffffffffc1b78880 mdt ffffffffc1a6a000 1654784 /tmp/crash-anaysis.8XWbi/modules/mdt.ko ffffffffc1ca9240 lod ffffffffc1bff000 1048576 /tmp/crash-anaysis.8XWbi/modules/lod.ko ffffffffc1d62800 ofd ffffffffc1d00000 610304 /tmp/crash-anaysis.8XWbi/modules/ofd.ko ffffffffc1df1f80 osp ffffffffc1d96000 573440 /tmp/crash-anaysis.8XWbi/modules/osp.ko ffffffffc1f56340 lustre ffffffffc1e23000 1904640 /tmp/crash-anaysis.8XWbi/modules/lustre.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module 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, 0xffff94762e23dc28) 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 1024 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, 0xffff9476136425e8) 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 1024 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, 0xffff9476048fb908) 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 1024 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, 0xffff947632014488) 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 1024 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_trace_pages(0, 5, 0xffff94762d7b62c8) 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 2 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_trace_pages(1, 5, 0xffff947607f01a88) 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 3 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_trace_pages(2, 5, 0xffff9476048fba88) 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 2 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_trace_pages(3, 5, 0xffff9476054c11e8) 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 3 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 4106 total debug pages from 4 CPUs to /tmp/crash-anaysis.8XWbi/lustre.bin