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.0eG5Z/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68845/testresults/sanity-compr-special6-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg303-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 07:53:31 EDT 2026 UPTIME: 00:05:58 LOAD AVERAGE: 1.96, 1.72, 0.84 TASKS: 350 NODENAME: oleg303-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: 6689 COMMAND: "ll_ost_io00_002" TASK: ffff979cf9488000 [THREAD_INFO: ffff979cf9488000] CPU: 2 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 crc32c_intel module mod: cannot find or load object file for crct10dif_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 pcspkr 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 intel_rapl_msr 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 sb_edac module mod: cannot find or load object file for dns_resolver module mod: cannot find or load object file for ata_piix 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 nfsv4 module mod: cannot find or load object file for auth_rpcgss module mod: cannot find or load object file for rpcsec_gss_krb5 module MODULE NAME BASE SIZE OBJECT FILE ffffffffc0467740 libcfs ffffffffc0447000 225280 /tmp/crash-anaysis.0eG5Z/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0e893c0 lnet ffffffffc0dae000 1490944 /tmp/crash-anaysis.0eG5Z/modules/lnet.ko ffffffffc0f44900 ksocklnd ffffffffc0f1b000 270336 /tmp/crash-anaysis.0eG5Z/modules/ksocklnd.ko ffffffffc10a2800 obdclass ffffffffc0f5e000 4395008 /tmp/crash-anaysis.0eG5Z/modules/obdclass.ko ffffffffc161d240 ptlrpc ffffffffc1390000 4186112 /tmp/crash-anaysis.0eG5Z/modules/ptlrpc.ko ffffffffc17dd880 ptlrpc_gss ffffffffc178f000 524288 /tmp/crash-anaysis.0eG5Z/modules/ptlrpc_gss.ko ffffffffc1822c80 fld ffffffffc1810000 126976 /tmp/crash-anaysis.0eG5Z/modules/fld.ko ffffffffc1842ac0 fid ffffffffc1830000 126976 /tmp/crash-anaysis.0eG5Z/modules/fid.ko ffffffffc1862740 ec ffffffffc1850000 81920 /tmp/crash-anaysis.0eG5Z/modules/ec.ko ffffffffc18a2080 lmv ffffffffc1865000 372736 /tmp/crash-anaysis.0eG5Z/modules/lmv.ko ffffffffc1941d00 osc ffffffffc18c1000 778240 /tmp/crash-anaysis.0eG5Z/modules/osc.ko ffffffffc19d8a00 lov ffffffffc1980000 552960 /tmp/crash-anaysis.0eG5Z/modules/lov.ko ffffffffc1a52b80 mdc ffffffffc1a08000 466944 /tmp/crash-anaysis.0eG5Z/modules/mdc.ko ffffffffc1a97000 mgc ffffffffc1a7b000 184320 /tmp/crash-anaysis.0eG5Z/modules/mgc.ko ffffffffc1aca5c0 obdecho ffffffffc1aa9000 225280 /tmp/crash-anaysis.0eG5Z/modules/obdecho.ko ffffffffc1b9b200 lfsck ffffffffc1ae1000 1081344 /tmp/crash-anaysis.0eG5Z/modules/lfsck.ko ffffffffc1c6a240 lquota ffffffffc1bea000 786432 /tmp/crash-anaysis.0eG5Z/modules/lquota.ko ffffffffc1d15ac0 osd_zfs ffffffffc1cab000 655360 /tmp/crash-anaysis.0eG5Z/modules/osd_zfs.ko ffffffffc1daf400 mgs ffffffffc1d4c000 626688 /tmp/crash-anaysis.0eG5Z/modules/mgs.ko ffffffffc1e61080 mdd ffffffffc1de6000 745472 /tmp/crash-anaysis.0eG5Z/modules/mdd.ko ffffffffc1fab880 mdt ffffffffc1e9d000 1654784 /tmp/crash-anaysis.0eG5Z/modules/mdt.ko ffffffffc20dd480 lod ffffffffc2032000 1052672 /tmp/crash-anaysis.0eG5Z/modules/lod.ko ffffffffc21a4fc0 ofd ffffffffc2134000 696320 /tmp/crash-anaysis.0eG5Z/modules/ofd.ko ffffffffc223af80 osp ffffffffc21df000 573440 /tmp/crash-anaysis.0eG5Z/modules/osp.ko ffffffffc23a0640 lustre ffffffffc226c000 1908736 /tmp/crash-anaysis.0eG5Z/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, 0xffff979ccd224a28) 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 108 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, 0xffff979cc2fd46e8) 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 121 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, 0xffff979cca52bee8) 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 94 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, 0xffff979cd276bea8) 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 137 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 460 total debug pages from 4 CPUs to /tmp/crash-anaysis.0eG5Z/lustre.bin