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.3yNqX/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68845/testresults/sanity-compr-special7-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg657-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 07:53:37 EDT 2026 UPTIME: 00:05:47 LOAD AVERAGE: 1.31, 1.11, 0.52 TASKS: 347 NODENAME: oleg657-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: 6704 COMMAND: "ll_ost_io00_002" TASK: ffff9352f94b8000 [THREAD_INFO: ffff9352f94b8000] CPU: 3 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 serio_raw module mod: cannot find or load object file for crc32c_intel module mod: cannot find or load object file for ata_generic 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_piix 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 pcspkr 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 intel_rapl_msr module mod: cannot find or load object file for dns_resolver 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 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 ffffffffc0656740 libcfs ffffffffc0636000 225280 /tmp/crash-anaysis.3yNqX/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc10763c0 lnet ffffffffc0f9b000 1490944 /tmp/crash-anaysis.3yNqX/modules/lnet.ko ffffffffc1131900 ksocklnd ffffffffc1108000 270336 /tmp/crash-anaysis.3yNqX/modules/ksocklnd.ko ffffffffc128f800 obdclass ffffffffc114b000 4395008 /tmp/crash-anaysis.3yNqX/modules/obdclass.ko ffffffffc180a240 ptlrpc ffffffffc157d000 4186112 /tmp/crash-anaysis.3yNqX/modules/ptlrpc.ko ffffffffc19ca880 ptlrpc_gss ffffffffc197c000 524288 /tmp/crash-anaysis.3yNqX/modules/ptlrpc_gss.ko ffffffffc1a0fc80 fld ffffffffc19fd000 126976 /tmp/crash-anaysis.3yNqX/modules/fld.ko ffffffffc1a2fac0 fid ffffffffc1a1d000 126976 /tmp/crash-anaysis.3yNqX/modules/fid.ko ffffffffc1a4f740 ec ffffffffc1a3d000 81920 /tmp/crash-anaysis.3yNqX/modules/ec.ko ffffffffc1a8f080 lmv ffffffffc1a52000 372736 /tmp/crash-anaysis.3yNqX/modules/lmv.ko ffffffffc1b2ed00 osc ffffffffc1aae000 778240 /tmp/crash-anaysis.3yNqX/modules/osc.ko ffffffffc1bc5a00 lov ffffffffc1b6d000 552960 /tmp/crash-anaysis.3yNqX/modules/lov.ko ffffffffc1c3fb80 mdc ffffffffc1bf5000 466944 /tmp/crash-anaysis.3yNqX/modules/mdc.ko ffffffffc1c84000 mgc ffffffffc1c68000 184320 /tmp/crash-anaysis.3yNqX/modules/mgc.ko ffffffffc1cb75c0 obdecho ffffffffc1c96000 225280 /tmp/crash-anaysis.3yNqX/modules/obdecho.ko ffffffffc1d88200 lfsck ffffffffc1cce000 1081344 /tmp/crash-anaysis.3yNqX/modules/lfsck.ko ffffffffc1e57240 lquota ffffffffc1dd7000 786432 /tmp/crash-anaysis.3yNqX/modules/lquota.ko ffffffffc1f02ac0 osd_zfs ffffffffc1e98000 655360 /tmp/crash-anaysis.3yNqX/modules/osd_zfs.ko ffffffffc1f9c400 mgs ffffffffc1f39000 626688 /tmp/crash-anaysis.3yNqX/modules/mgs.ko ffffffffc204e080 mdd ffffffffc1fd3000 745472 /tmp/crash-anaysis.3yNqX/modules/mdd.ko ffffffffc2198880 mdt ffffffffc208a000 1654784 /tmp/crash-anaysis.3yNqX/modules/mdt.ko ffffffffc22ca480 lod ffffffffc221f000 1052672 /tmp/crash-anaysis.3yNqX/modules/lod.ko ffffffffc2391fc0 ofd ffffffffc2321000 696320 /tmp/crash-anaysis.3yNqX/modules/ofd.ko ffffffffc2427f80 osp ffffffffc23cc000 573440 /tmp/crash-anaysis.3yNqX/modules/osp.ko ffffffffc258d640 lustre ffffffffc2459000 1908736 /tmp/crash-anaysis.3yNqX/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, 0xffff9352c2ea0288) 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 111 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, 0xffff9352d2c40868) 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 130 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, 0xffff9352d2c59c08) 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 102 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, 0xffff9352d310dea8) 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 127 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 470 total debug pages from 4 CPUs to /tmp/crash-anaysis.3yNqX/lustre.bin