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.rgGVc/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68868/testresults/sanity-pfl-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg237-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Thu Aug 27 11:39:13 EDT 2026 UPTIME: 01:02:58 LOAD AVERAGE: 1.11, 1.34, 1.28 TASKS: 393 NODENAME: oleg237-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: 6680 COMMAND: "ll_ost_io00_000" TASK: ffff895751ff27c0 [THREAD_INFO: ffff895751ff27c0] 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 ata_generic 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 rapl 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 crct10dif_pclmul module mod: cannot find or load object file for i2c_piix4 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 sb_edac 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 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 ffffffffc06da740 libcfs ffffffffc06ba000 225280 /tmp/crash-anaysis.rgGVc/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc10fc3c0 lnet ffffffffc1021000 1490944 /tmp/crash-anaysis.rgGVc/modules/lnet.ko ffffffffc11b7900 ksocklnd ffffffffc118e000 270336 /tmp/crash-anaysis.rgGVc/modules/ksocklnd.ko ffffffffc1316a80 obdclass ffffffffc11d1000 4403200 /tmp/crash-anaysis.rgGVc/modules/obdclass.ko ffffffffc18910c0 ptlrpc ffffffffc1605000 4173824 /tmp/crash-anaysis.rgGVc/modules/ptlrpc.ko ffffffffc1a4f880 ptlrpc_gss ffffffffc1a01000 524288 /tmp/crash-anaysis.rgGVc/modules/ptlrpc_gss.ko ffffffffc1a94c80 fld ffffffffc1a82000 126976 /tmp/crash-anaysis.rgGVc/modules/fld.ko ffffffffc1ab4ac0 fid ffffffffc1aa2000 126976 /tmp/crash-anaysis.rgGVc/modules/fid.ko ffffffffc1ad4740 ec ffffffffc1ac2000 81920 /tmp/crash-anaysis.rgGVc/modules/ec.ko ffffffffc1b14080 lmv ffffffffc1ad7000 372736 /tmp/crash-anaysis.rgGVc/modules/lmv.ko ffffffffc1bb52c0 osc ffffffffc1b33000 790528 /tmp/crash-anaysis.rgGVc/modules/osc.ko ffffffffc1c4da00 lov ffffffffc1bf5000 552960 /tmp/crash-anaysis.rgGVc/modules/lov.ko ffffffffc1cc7b80 mdc ffffffffc1c7d000 466944 /tmp/crash-anaysis.rgGVc/modules/mdc.ko ffffffffc1d0c000 mgc ffffffffc1cf0000 184320 /tmp/crash-anaysis.rgGVc/modules/mgc.ko ffffffffc1d3f5c0 obdecho ffffffffc1d1e000 225280 /tmp/crash-anaysis.rgGVc/modules/obdecho.ko ffffffffc1e10340 lfsck ffffffffc1d56000 1081344 /tmp/crash-anaysis.rgGVc/modules/lfsck.ko ffffffffc1edf240 lquota ffffffffc1e5f000 786432 /tmp/crash-anaysis.rgGVc/modules/lquota.ko ffffffffc1f8aac0 osd_zfs ffffffffc1f20000 655360 /tmp/crash-anaysis.rgGVc/modules/osd_zfs.ko ffffffffc2024400 mgs ffffffffc1fc1000 626688 /tmp/crash-anaysis.rgGVc/modules/mgs.ko ffffffffc20d6080 mdd ffffffffc205b000 745472 /tmp/crash-anaysis.rgGVc/modules/mdd.ko ffffffffc2220940 mdt ffffffffc2112000 1654784 /tmp/crash-anaysis.rgGVc/modules/mdt.ko ffffffffc2352480 lod ffffffffc22a7000 1052672 /tmp/crash-anaysis.rgGVc/modules/lod.ko ffffffffc2416a40 ofd ffffffffc23a9000 679936 /tmp/crash-anaysis.rgGVc/modules/ofd.ko ffffffffc24abf80 osp ffffffffc2450000 573440 /tmp/crash-anaysis.rgGVc/modules/osp.ko ffffffffc26116c0 lustre ffffffffc24dd000 1912832 /tmp/crash-anaysis.rgGVc/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, 0xffff89565389a4e8) 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 942 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, 0xffff895648b4c908) 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 961 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, 0xffff8956436c2928) 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, 0xffff89565391bda8) 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 890 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 3817 total debug pages from 4 CPUs to /tmp/crash-anaysis.rgGVc/lustre.bin