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.9WtxL/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68247/testresults/replay-vbr-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg146-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 19 22:17:25 EDT 2026 UPTIME: 00:35:01 LOAD AVERAGE: 1.34, 1.37, 1.21 TASKS: 349 NODENAME: oleg146-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: 8281 COMMAND: "ll_ost00_003" TASK: ffff98e2c4f00000 [THREAD_INFO: ffff98e2c4f00000] 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_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 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 dns_resolver 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 pcspkr 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 intel_rapl_msr 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 ffffffffc0524740 libcfs ffffffffc0504000 225280 /tmp/crash-anaysis.9WtxL/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0f463c0 lnet ffffffffc0e6b000 1490944 /tmp/crash-anaysis.9WtxL/modules/lnet.ko ffffffffc1001900 ksocklnd ffffffffc0fd8000 270336 /tmp/crash-anaysis.9WtxL/modules/ksocklnd.ko ffffffffc115cfc0 obdclass ffffffffc101b000 4374528 /tmp/crash-anaysis.9WtxL/modules/obdclass.ko ffffffffc16d5080 ptlrpc ffffffffc1448000 4182016 /tmp/crash-anaysis.9WtxL/modules/ptlrpc.ko ffffffffc1894880 ptlrpc_gss ffffffffc1846000 524288 /tmp/crash-anaysis.9WtxL/modules/ptlrpc_gss.ko ffffffffc18d9c80 fld ffffffffc18c7000 126976 /tmp/crash-anaysis.9WtxL/modules/fld.ko ffffffffc18f9ac0 fid ffffffffc18e7000 126976 /tmp/crash-anaysis.9WtxL/modules/fid.ko ffffffffc1919740 ec ffffffffc1907000 81920 /tmp/crash-anaysis.9WtxL/modules/ec.ko ffffffffc1959080 lmv ffffffffc191c000 372736 /tmp/crash-anaysis.9WtxL/modules/lmv.ko ffffffffc19efe00 osc ffffffffc1978000 729088 /tmp/crash-anaysis.9WtxL/modules/osc.ko ffffffffc1a82780 lov ffffffffc1a2b000 548864 /tmp/crash-anaysis.9WtxL/modules/lov.ko ffffffffc1afcb80 mdc ffffffffc1ab2000 466944 /tmp/crash-anaysis.9WtxL/modules/mdc.ko ffffffffc1b41000 mgc ffffffffc1b25000 184320 /tmp/crash-anaysis.9WtxL/modules/mgc.ko ffffffffc1b745c0 obdecho ffffffffc1b53000 225280 /tmp/crash-anaysis.9WtxL/modules/obdecho.ko ffffffffc1c450c0 lfsck ffffffffc1b8b000 1077248 /tmp/crash-anaysis.9WtxL/modules/lfsck.ko ffffffffc1d13200 lquota ffffffffc1c93000 786432 /tmp/crash-anaysis.9WtxL/modules/lquota.ko ffffffffc1dbeac0 osd_zfs ffffffffc1d54000 655360 /tmp/crash-anaysis.9WtxL/modules/osd_zfs.ko ffffffffc1e58400 mgs ffffffffc1df5000 626688 /tmp/crash-anaysis.9WtxL/modules/mgs.ko ffffffffc1f0a080 mdd ffffffffc1e8f000 745472 /tmp/crash-anaysis.9WtxL/modules/mdd.ko ffffffffc2054880 mdt ffffffffc1f46000 1654784 /tmp/crash-anaysis.9WtxL/modules/mdt.ko ffffffffc2185240 lod ffffffffc20db000 1048576 /tmp/crash-anaysis.9WtxL/modules/lod.ko ffffffffc223e800 ofd ffffffffc21dc000 610304 /tmp/crash-anaysis.9WtxL/modules/ofd.ko ffffffffc22cdf80 osp ffffffffc2272000 573440 /tmp/crash-anaysis.9WtxL/modules/osp.ko ffffffffc2432340 lustre ffffffffc22ff000 1904640 /tmp/crash-anaysis.9WtxL/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, 0xffff98e2d000cf68) 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, 0xffff98e2d1f4be88) 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, 0xffff98e2c613adc8) 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, 0xffff98e2c4ec5ea8) 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_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_trace_pages(0, 5, 0xffff98e2f468ac28) 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 1 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_trace_pages(1, 5, 0xffff98e2c786dc08) 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 1 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_trace_pages(2, 5, 0xffff98e2f2a8e5a8) 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 1 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_trace_pages(3, 5, 0xffff98e2c1345308) 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 1 debug pages from type 2 - CPU 3 lustre: Dumped 4100 total debug pages from 4 CPUs to /tmp/crash-anaysis.9WtxL/lustre.bin