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.MoFJD/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68247/testresults/conf-sanity-slow-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg602-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 19 22:22:54 EDT 2026 UPTIME: 00:39:21 LOAD AVERAGE: 2.05, 2.23, 2.12 TASKS: 317 NODENAME: oleg602-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: 23706 COMMAND: "ll_ost00_010" TASK: ffff9114ffc727c0 [THREAD_INFO: ffff9114ffc727c0] 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 libata module mod: cannot find or load object file for crc32_pclmul module mod: cannot find or load object file for intel_rapl_msr module mod: cannot find or load object file for ghash_clmulni_intel module mod: cannot find or load object file for i2c_piix4 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 dns_resolver module mod: cannot find or load object file for serio_raw 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 crct10dif_pclmul 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 rpcsec_gss_krb5 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 ffffffffc0607740 libcfs ffffffffc05e7000 225280 /tmp/crash-anaysis.MoFJD/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc10273c0 lnet ffffffffc0f4c000 1490944 /tmp/crash-anaysis.MoFJD/modules/lnet.ko ffffffffc10e2900 ksocklnd ffffffffc10b9000 270336 /tmp/crash-anaysis.MoFJD/modules/ksocklnd.ko ffffffffc123dfc0 obdclass ffffffffc10fc000 4374528 /tmp/crash-anaysis.MoFJD/modules/obdclass.ko ffffffffc17b6080 ptlrpc ffffffffc1529000 4182016 /tmp/crash-anaysis.MoFJD/modules/ptlrpc.ko ffffffffc1975880 ptlrpc_gss ffffffffc1927000 524288 /tmp/crash-anaysis.MoFJD/modules/ptlrpc_gss.ko ffffffffc19bac80 fld ffffffffc19a8000 126976 /tmp/crash-anaysis.MoFJD/modules/fld.ko ffffffffc19daac0 fid ffffffffc19c8000 126976 /tmp/crash-anaysis.MoFJD/modules/fid.ko ffffffffc19fa740 ec ffffffffc19e8000 81920 /tmp/crash-anaysis.MoFJD/modules/ec.ko ffffffffc1a3a080 lmv ffffffffc19fd000 372736 /tmp/crash-anaysis.MoFJD/modules/lmv.ko ffffffffc1ad0e00 osc ffffffffc1a59000 729088 /tmp/crash-anaysis.MoFJD/modules/osc.ko ffffffffc1b63780 lov ffffffffc1b0c000 548864 /tmp/crash-anaysis.MoFJD/modules/lov.ko ffffffffc1bddb80 mdc ffffffffc1b93000 466944 /tmp/crash-anaysis.MoFJD/modules/mdc.ko ffffffffc1c22000 mgc ffffffffc1c06000 184320 /tmp/crash-anaysis.MoFJD/modules/mgc.ko ffffffffc1c555c0 obdecho ffffffffc1c34000 225280 /tmp/crash-anaysis.MoFJD/modules/obdecho.ko ffffffffc1d260c0 lfsck ffffffffc1c6c000 1077248 /tmp/crash-anaysis.MoFJD/modules/lfsck.ko ffffffffc1df4200 lquota ffffffffc1d74000 786432 /tmp/crash-anaysis.MoFJD/modules/lquota.ko ffffffffc1e9fac0 osd_zfs ffffffffc1e35000 655360 /tmp/crash-anaysis.MoFJD/modules/osd_zfs.ko ffffffffc1f39400 mgs ffffffffc1ed6000 626688 /tmp/crash-anaysis.MoFJD/modules/mgs.ko ffffffffc1feb080 mdd ffffffffc1f70000 745472 /tmp/crash-anaysis.MoFJD/modules/mdd.ko ffffffffc2135880 mdt ffffffffc2027000 1654784 /tmp/crash-anaysis.MoFJD/modules/mdt.ko ffffffffc2266240 lod ffffffffc21bc000 1048576 /tmp/crash-anaysis.MoFJD/modules/lod.ko ffffffffc231f800 ofd ffffffffc22bd000 610304 /tmp/crash-anaysis.MoFJD/modules/ofd.ko ffffffffc23aef80 osp ffffffffc2353000 573440 /tmp/crash-anaysis.MoFJD/modules/osp.ko ffffffffc2513340 lustre ffffffffc23e0000 1904640 /tmp/crash-anaysis.MoFJD/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, 0xffff9114c62f1a08) 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, 0xffff9113cbd7bd48) 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, 0xffff9114c3930b88) 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, 0xffff9114d05aaac8) 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, 0xffff9114c657ee88) 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 20 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, 0xffff9114c657ed88) 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 18 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, 0xffff9114c6335e08) 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 17 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, 0xffff9114d0577f08) 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 12 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 4163 total debug pages from 4 CPUs to /tmp/crash-anaysis.MoFJD/lustre.bin