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.TPFxk/vmlinux [TAINTED] DUMPFILE: /exports/testreports/70062/testresults/sanity-pfl-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg656-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Fri Sep 11 09:03:14 EDT 2026 UPTIME: 00:59:30 LOAD AVERAGE: 1.35, 1.18, 1.12 TASKS: 399 NODENAME: oleg656-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: 16921 COMMAND: "ll_ost_io00_010" TASK: ffff8b0f02b40000 [THREAD_INFO: ffff8b0f02b40000] 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_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 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 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 crc32c_intel module mod: cannot find or load object file for crct10dif_pclmul module mod: cannot find or load object file for intel_rapl_msr 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 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 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 ffffffffc06a8740 libcfs ffffffffc0688000 225280 /tmp/crash-anaysis.TPFxk/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc10ca3c0 lnet ffffffffc0fef000 1490944 /tmp/crash-anaysis.TPFxk/modules/lnet.ko ffffffffc1185900 ksocklnd ffffffffc115c000 270336 /tmp/crash-anaysis.TPFxk/modules/ksocklnd.ko ffffffffc12e6180 obdclass ffffffffc119f000 4415488 /tmp/crash-anaysis.TPFxk/modules/obdclass.ko ffffffffc18620c0 ptlrpc ffffffffc15d6000 4173824 /tmp/crash-anaysis.TPFxk/modules/ptlrpc.ko ffffffffc1a20880 ptlrpc_gss ffffffffc19d2000 524288 /tmp/crash-anaysis.TPFxk/modules/ptlrpc_gss.ko ffffffffc1a65c80 fld ffffffffc1a53000 126976 /tmp/crash-anaysis.TPFxk/modules/fld.ko ffffffffc1a85ac0 fid ffffffffc1a73000 126976 /tmp/crash-anaysis.TPFxk/modules/fid.ko ffffffffc1aa5740 ec ffffffffc1a93000 81920 /tmp/crash-anaysis.TPFxk/modules/ec.ko ffffffffc1ae5080 lmv ffffffffc1aa8000 372736 /tmp/crash-anaysis.TPFxk/modules/lmv.ko ffffffffc1b87540 osc ffffffffc1b04000 798720 /tmp/crash-anaysis.TPFxk/modules/osc.ko ffffffffc1c20b00 lov ffffffffc1bc8000 552960 /tmp/crash-anaysis.TPFxk/modules/lov.ko ffffffffc1c9ab80 mdc ffffffffc1c50000 466944 /tmp/crash-anaysis.TPFxk/modules/mdc.ko ffffffffc1cdf000 mgc ffffffffc1cc3000 184320 /tmp/crash-anaysis.TPFxk/modules/mgc.ko ffffffffc1d125c0 obdecho ffffffffc1cf1000 225280 /tmp/crash-anaysis.TPFxk/modules/obdecho.ko ffffffffc1de3340 lfsck ffffffffc1d29000 1081344 /tmp/crash-anaysis.TPFxk/modules/lfsck.ko ffffffffc1eb2240 lquota ffffffffc1e32000 786432 /tmp/crash-anaysis.TPFxk/modules/lquota.ko ffffffffc1f5eb80 osd_zfs ffffffffc1ef3000 659456 /tmp/crash-anaysis.TPFxk/modules/osd_zfs.ko ffffffffc1ff8400 mgs ffffffffc1f95000 626688 /tmp/crash-anaysis.TPFxk/modules/mgs.ko ffffffffc20aa0c0 mdd ffffffffc202f000 745472 /tmp/crash-anaysis.TPFxk/modules/mdd.ko ffffffffc21f4900 mdt ffffffffc20e6000 1654784 /tmp/crash-anaysis.TPFxk/modules/mdt.ko ffffffffc2328940 lod ffffffffc227b000 1064960 /tmp/crash-anaysis.TPFxk/modules/lod.ko ffffffffc23efe40 ofd ffffffffc2380000 692224 /tmp/crash-anaysis.TPFxk/modules/ofd.ko ffffffffc2485f80 osp ffffffffc242a000 573440 /tmp/crash-anaysis.TPFxk/modules/osp.ko ffffffffc25ed780 lustre ffffffffc24b7000 1925120 /tmp/crash-anaysis.TPFxk/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, 0xffff8b0f1185eee8) 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, 0xffff8b0e05456928) 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, 0xffff8b0e03266068) 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, 0xffff8b0e05431fc8) 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.TPFxk/lustre.bin