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.zM1Z6/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68866/testresults/sanity-pfl-special7-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg453-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 06:32:10 EDT 2026 UPTIME: 00:07:20 LOAD AVERAGE: 1.25, 1.25, 0.66 TASKS: 405 NODENAME: oleg453-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: 8122 COMMAND: "ll_ost_io00_000" TASK: ffff9bfdbb4d27c0 [THREAD_INFO: ffff9bfdbb4d27c0] CPU: 1 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 crct10dif_pclmul module mod: cannot find or load object file for ata_generic module mod: cannot find or load object file for intel_rapl_msr 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 crc32c_intel 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 dns_resolver module mod: cannot find or load object file for intel_rapl_common 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 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 ffffffffc073d740 libcfs ffffffffc071d000 225280 /tmp/crash-anaysis.zM1Z6/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc115f3c0 lnet ffffffffc1084000 1490944 /tmp/crash-anaysis.zM1Z6/modules/lnet.ko ffffffffc121a900 ksocklnd ffffffffc11f1000 270336 /tmp/crash-anaysis.zM1Z6/modules/ksocklnd.ko ffffffffc1379a80 obdclass ffffffffc1234000 4403200 /tmp/crash-anaysis.zM1Z6/modules/obdclass.ko ffffffffc18f40c0 ptlrpc ffffffffc1668000 4173824 /tmp/crash-anaysis.zM1Z6/modules/ptlrpc.ko ffffffffc1ab2880 ptlrpc_gss ffffffffc1a64000 524288 /tmp/crash-anaysis.zM1Z6/modules/ptlrpc_gss.ko ffffffffc1af7c80 fld ffffffffc1ae5000 126976 /tmp/crash-anaysis.zM1Z6/modules/fld.ko ffffffffc1b17ac0 fid ffffffffc1b05000 126976 /tmp/crash-anaysis.zM1Z6/modules/fid.ko ffffffffc1b37740 ec ffffffffc1b25000 81920 /tmp/crash-anaysis.zM1Z6/modules/ec.ko ffffffffc1b77080 lmv ffffffffc1b3a000 372736 /tmp/crash-anaysis.zM1Z6/modules/lmv.ko ffffffffc1c182c0 osc ffffffffc1b96000 790528 /tmp/crash-anaysis.zM1Z6/modules/osc.ko ffffffffc1cb0a00 lov ffffffffc1c58000 552960 /tmp/crash-anaysis.zM1Z6/modules/lov.ko ffffffffc1d2ab80 mdc ffffffffc1ce0000 466944 /tmp/crash-anaysis.zM1Z6/modules/mdc.ko ffffffffc1d6f000 mgc ffffffffc1d53000 184320 /tmp/crash-anaysis.zM1Z6/modules/mgc.ko ffffffffc1da25c0 obdecho ffffffffc1d81000 225280 /tmp/crash-anaysis.zM1Z6/modules/obdecho.ko ffffffffc1e73340 lfsck ffffffffc1db9000 1081344 /tmp/crash-anaysis.zM1Z6/modules/lfsck.ko ffffffffc1f42240 lquota ffffffffc1ec2000 786432 /tmp/crash-anaysis.zM1Z6/modules/lquota.ko ffffffffc1fedac0 osd_zfs ffffffffc1f83000 655360 /tmp/crash-anaysis.zM1Z6/modules/osd_zfs.ko ffffffffc2087400 mgs ffffffffc2024000 626688 /tmp/crash-anaysis.zM1Z6/modules/mgs.ko ffffffffc2139080 mdd ffffffffc20be000 745472 /tmp/crash-anaysis.zM1Z6/modules/mdd.ko ffffffffc2283940 mdt ffffffffc2175000 1654784 /tmp/crash-anaysis.zM1Z6/modules/mdt.ko ffffffffc23b5480 lod ffffffffc230a000 1052672 /tmp/crash-anaysis.zM1Z6/modules/lod.ko ffffffffc2479a40 ofd ffffffffc240c000 679936 /tmp/crash-anaysis.zM1Z6/modules/ofd.ko ffffffffc250ef80 osp ffffffffc24b3000 573440 /tmp/crash-anaysis.zM1Z6/modules/osp.ko ffffffffc26746c0 lustre ffffffffc2540000 1912832 /tmp/crash-anaysis.zM1Z6/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, 0xffff9bfdc1a76508) 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, 0xffff9bfdbdb40bc8) 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 917 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, 0xffff9bfd84e70268) 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, 0xffff9bfdb74c3908) 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 836 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 3801 total debug pages from 4 CPUs to /tmp/crash-anaysis.zM1Z6/lustre.bin