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.p7HEM/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68866/testresults/sanity-pfl-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg246-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 07:34:16 EDT 2026 UPTIME: 01:07:41 LOAD AVERAGE: 2.15, 1.67, 1.49 TASKS: 403 NODENAME: oleg246-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: 16502 COMMAND: "ll_ost_io00_008" TASK: ffff9b97e0168000 [THREAD_INFO: ffff9b97e0168000] 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 serio_raw module mod: cannot find or load object file for ghash_clmulni_intel module mod: cannot find or load object file for ata_generic 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 ata_piix module mod: cannot find or load object file for intel_rapl_msr 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 crc32c_intel module mod: cannot find or load object file for crct10dif_pclmul 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 rpcsec_gss_krb5 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 ffffffffc0558c80 fld ffffffffc0546000 126976 /tmp/crash-anaysis.p7HEM/modules/fld.ko ffffffffc0578740 ec ffffffffc0566000 81920 /tmp/crash-anaysis.p7HEM/modules/ec.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0ecd740 libcfs ffffffffc0ead000 225280 /tmp/crash-anaysis.p7HEM/modules/libcfs.ko ffffffffc0fc03c0 lnet ffffffffc0ee5000 1490944 /tmp/crash-anaysis.p7HEM/modules/lnet.ko ffffffffc107b900 ksocklnd ffffffffc1052000 270336 /tmp/crash-anaysis.p7HEM/modules/ksocklnd.ko ffffffffc11daa80 obdclass ffffffffc1095000 4403200 /tmp/crash-anaysis.p7HEM/modules/obdclass.ko ffffffffc17550c0 ptlrpc ffffffffc14c9000 4173824 /tmp/crash-anaysis.p7HEM/modules/ptlrpc.ko ffffffffc1913880 ptlrpc_gss ffffffffc18c5000 524288 /tmp/crash-anaysis.p7HEM/modules/ptlrpc_gss.ko ffffffffc1958ac0 fid ffffffffc1946000 126976 /tmp/crash-anaysis.p7HEM/modules/fid.ko ffffffffc19a3080 lmv ffffffffc1966000 372736 /tmp/crash-anaysis.p7HEM/modules/lmv.ko ffffffffc1a442c0 osc ffffffffc19c2000 790528 /tmp/crash-anaysis.p7HEM/modules/osc.ko ffffffffc1adca00 lov ffffffffc1a84000 552960 /tmp/crash-anaysis.p7HEM/modules/lov.ko ffffffffc1b56b80 mdc ffffffffc1b0c000 466944 /tmp/crash-anaysis.p7HEM/modules/mdc.ko ffffffffc1b9b000 mgc ffffffffc1b7f000 184320 /tmp/crash-anaysis.p7HEM/modules/mgc.ko ffffffffc1bce5c0 obdecho ffffffffc1bad000 225280 /tmp/crash-anaysis.p7HEM/modules/obdecho.ko ffffffffc1c9f340 lfsck ffffffffc1be5000 1081344 /tmp/crash-anaysis.p7HEM/modules/lfsck.ko ffffffffc1d6e240 lquota ffffffffc1cee000 786432 /tmp/crash-anaysis.p7HEM/modules/lquota.ko ffffffffc1e19ac0 osd_zfs ffffffffc1daf000 655360 /tmp/crash-anaysis.p7HEM/modules/osd_zfs.ko ffffffffc1eb3400 mgs ffffffffc1e50000 626688 /tmp/crash-anaysis.p7HEM/modules/mgs.ko ffffffffc1f65080 mdd ffffffffc1eea000 745472 /tmp/crash-anaysis.p7HEM/modules/mdd.ko ffffffffc20af940 mdt ffffffffc1fa1000 1654784 /tmp/crash-anaysis.p7HEM/modules/mdt.ko ffffffffc21e1480 lod ffffffffc2136000 1052672 /tmp/crash-anaysis.p7HEM/modules/lod.ko ffffffffc22a5a40 ofd ffffffffc2238000 679936 /tmp/crash-anaysis.p7HEM/modules/ofd.ko ffffffffc233af80 osp ffffffffc22df000 573440 /tmp/crash-anaysis.p7HEM/modules/osp.ko ffffffffc24a06c0 lustre ffffffffc236c000 1912832 /tmp/crash-anaysis.p7HEM/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, 0xffff9b96c4fc4e28) 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 925 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, 0xffff9b96d1126c88) 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 769 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, 0xffff9b96c97e0508) 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, 0xffff9b97f5f58b48) 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 3742 total debug pages from 4 CPUs to /tmp/crash-anaysis.p7HEM/lustre.bin