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.V0Kxa/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68866/testresults/sanity-pfl-special6-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg645-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 06:31:07 EDT 2026 UPTIME: 00:06:03 LOAD AVERAGE: 2.00, 1.28, 0.61 TASKS: 346 NODENAME: oleg645-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: 6688 COMMAND: "ll_ost_io00_000" TASK: ffff9df706a10000 [THREAD_INFO: ffff9df706a10000] 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_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 ghash_clmulni_intel module mod: cannot find or load object file for crc32_pclmul module mod: cannot find or load object file for pcspkr module mod: cannot find or load object file for ata_generic module mod: cannot find or load object file for rapl module mod: cannot find or load object file for serio_raw module mod: cannot find or load object file for ata_piix 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 crct10dif_pclmul module mod: cannot find or load object file for dns_resolver 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 rpcsec_gss_krb5 module mod: cannot find or load object file for sb_edac 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 ffffffffc0453740 libcfs ffffffffc0433000 225280 /tmp/crash-anaysis.V0Kxa/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0e753c0 lnet ffffffffc0d9a000 1490944 /tmp/crash-anaysis.V0Kxa/modules/lnet.ko ffffffffc0f30900 ksocklnd ffffffffc0f07000 270336 /tmp/crash-anaysis.V0Kxa/modules/ksocklnd.ko ffffffffc108fa80 obdclass ffffffffc0f4a000 4403200 /tmp/crash-anaysis.V0Kxa/modules/obdclass.ko ffffffffc160a0c0 ptlrpc ffffffffc137e000 4173824 /tmp/crash-anaysis.V0Kxa/modules/ptlrpc.ko ffffffffc17c8880 ptlrpc_gss ffffffffc177a000 524288 /tmp/crash-anaysis.V0Kxa/modules/ptlrpc_gss.ko ffffffffc180dc80 fld ffffffffc17fb000 126976 /tmp/crash-anaysis.V0Kxa/modules/fld.ko ffffffffc182dac0 fid ffffffffc181b000 126976 /tmp/crash-anaysis.V0Kxa/modules/fid.ko ffffffffc184d740 ec ffffffffc183b000 81920 /tmp/crash-anaysis.V0Kxa/modules/ec.ko ffffffffc188d080 lmv ffffffffc1850000 372736 /tmp/crash-anaysis.V0Kxa/modules/lmv.ko ffffffffc192e2c0 osc ffffffffc18ac000 790528 /tmp/crash-anaysis.V0Kxa/modules/osc.ko ffffffffc19c6a00 lov ffffffffc196e000 552960 /tmp/crash-anaysis.V0Kxa/modules/lov.ko ffffffffc1a40b80 mdc ffffffffc19f6000 466944 /tmp/crash-anaysis.V0Kxa/modules/mdc.ko ffffffffc1a85000 mgc ffffffffc1a69000 184320 /tmp/crash-anaysis.V0Kxa/modules/mgc.ko ffffffffc1ab85c0 obdecho ffffffffc1a97000 225280 /tmp/crash-anaysis.V0Kxa/modules/obdecho.ko ffffffffc1b89340 lfsck ffffffffc1acf000 1081344 /tmp/crash-anaysis.V0Kxa/modules/lfsck.ko ffffffffc1c58240 lquota ffffffffc1bd8000 786432 /tmp/crash-anaysis.V0Kxa/modules/lquota.ko ffffffffc1d03ac0 osd_zfs ffffffffc1c99000 655360 /tmp/crash-anaysis.V0Kxa/modules/osd_zfs.ko ffffffffc1d9d400 mgs ffffffffc1d3a000 626688 /tmp/crash-anaysis.V0Kxa/modules/mgs.ko ffffffffc1e4f080 mdd ffffffffc1dd4000 745472 /tmp/crash-anaysis.V0Kxa/modules/mdd.ko ffffffffc1f99940 mdt ffffffffc1e8b000 1654784 /tmp/crash-anaysis.V0Kxa/modules/mdt.ko ffffffffc20cb480 lod ffffffffc2020000 1052672 /tmp/crash-anaysis.V0Kxa/modules/lod.ko ffffffffc218fa40 ofd ffffffffc2122000 679936 /tmp/crash-anaysis.V0Kxa/modules/ofd.ko ffffffffc2224f80 osp ffffffffc21c9000 573440 /tmp/crash-anaysis.V0Kxa/modules/osp.ko ffffffffc238a6c0 lustre ffffffffc2256000 1912832 /tmp/crash-anaysis.V0Kxa/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, 0xffff9df706b0b428) 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 878 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, 0xffff9df716bdde28) 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 988 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, 0xffff9df602473248) 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, 0xffff9df7089f17e8) 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 891 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 3781 total debug pages from 4 CPUs to /tmp/crash-anaysis.V0Kxa/lustre.bin