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.s2AuB/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68902/testresults/sanity-pfl-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg255-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Thu Aug 27 17:43:08 EDT 2026 UPTIME: 01:00:22 LOAD AVERAGE: 1.63, 1.44, 1.33 TASKS: 411 NODENAME: oleg255-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 000000000000002e" PID: 16493 COMMAND: "ll_ost_io00_008" TASK: ffff972b4874cf80 [THREAD_INFO: ffff972b4874cf80] 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 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 rapl module mod: cannot find or load object file for serio_raw module mod: cannot find or load object file for pcspkr module mod: cannot find or load object file for crct10dif_pclmul 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 crc32c_intel module mod: cannot find or load object file for squashfs module mod: cannot find or load object file for intel_rapl_common 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 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 ffffffffc0645c80 fld ffffffffc0633000 126976 /tmp/crash-anaysis.s2AuB/modules/fld.ko ffffffffc0665740 ec ffffffffc0653000 81920 /tmp/crash-anaysis.s2AuB/modules/ec.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0fba740 libcfs ffffffffc0f9a000 225280 /tmp/crash-anaysis.s2AuB/modules/libcfs.ko ffffffffc10ad3c0 lnet ffffffffc0fd2000 1490944 /tmp/crash-anaysis.s2AuB/modules/lnet.ko ffffffffc1168900 ksocklnd ffffffffc113f000 270336 /tmp/crash-anaysis.s2AuB/modules/ksocklnd.ko ffffffffc12c8fc0 obdclass ffffffffc1182000 4415488 /tmp/crash-anaysis.s2AuB/modules/obdclass.ko ffffffffc18450c0 ptlrpc ffffffffc15b9000 4173824 /tmp/crash-anaysis.s2AuB/modules/ptlrpc.ko ffffffffc1a03880 ptlrpc_gss ffffffffc19b5000 524288 /tmp/crash-anaysis.s2AuB/modules/ptlrpc_gss.ko ffffffffc1a48ac0 fid ffffffffc1a36000 126976 /tmp/crash-anaysis.s2AuB/modules/fid.ko ffffffffc1a93080 lmv ffffffffc1a56000 372736 /tmp/crash-anaysis.s2AuB/modules/lmv.ko ffffffffc1b34300 osc ffffffffc1ab2000 790528 /tmp/crash-anaysis.s2AuB/modules/osc.ko ffffffffc1bcca00 lov ffffffffc1b74000 552960 /tmp/crash-anaysis.s2AuB/modules/lov.ko ffffffffc1c46b80 mdc ffffffffc1bfc000 466944 /tmp/crash-anaysis.s2AuB/modules/mdc.ko ffffffffc1c8b000 mgc ffffffffc1c6f000 184320 /tmp/crash-anaysis.s2AuB/modules/mgc.ko ffffffffc1cbe5c0 obdecho ffffffffc1c9d000 225280 /tmp/crash-anaysis.s2AuB/modules/obdecho.ko ffffffffc1d8f340 lfsck ffffffffc1cd5000 1081344 /tmp/crash-anaysis.s2AuB/modules/lfsck.ko ffffffffc1e5e240 lquota ffffffffc1dde000 786432 /tmp/crash-anaysis.s2AuB/modules/lquota.ko ffffffffc1f0ab80 osd_zfs ffffffffc1e9f000 659456 /tmp/crash-anaysis.s2AuB/modules/osd_zfs.ko ffffffffc1fa4400 mgs ffffffffc1f41000 626688 /tmp/crash-anaysis.s2AuB/modules/mgs.ko ffffffffc2056080 mdd ffffffffc1fdb000 745472 /tmp/crash-anaysis.s2AuB/modules/mdd.ko ffffffffc21a0940 mdt ffffffffc2092000 1654784 /tmp/crash-anaysis.s2AuB/modules/mdt.ko ffffffffc22d2540 lod ffffffffc2227000 1056768 /tmp/crash-anaysis.s2AuB/modules/lod.ko ffffffffc2399e40 ofd ffffffffc232a000 692224 /tmp/crash-anaysis.s2AuB/modules/ofd.ko ffffffffc242ff80 osp ffffffffc23d4000 573440 /tmp/crash-anaysis.s2AuB/modules/osp.ko ffffffffc25954c0 lustre ffffffffc2461000 1908736 /tmp/crash-anaysis.s2AuB/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, 0xffff972c450b8728) 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, 0xffff972b436f8b28) 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, 0xffff972c465d5268) 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, 0xffff972b44b73668) 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_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 4096 total debug pages from 4 CPUs to /tmp/crash-anaysis.s2AuB/lustre.bin