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.ln5GO/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68864/testresults/sanity-pfl-zfs-rocky8.10_x86_64-rocky8.10_x86_64-retry1/oleg202-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Thu Aug 27 11:34:35 EDT 2026 UPTIME: 01:02:41 LOAD AVERAGE: 1.58, 1.40, 1.26 TASKS: 393 NODENAME: oleg202-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: 6687 COMMAND: "ll_ost_io00_000" TASK: ffff91ca7b4d27c0 [THREAD_INFO: ffff91ca7b4d27c0] 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_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 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 intel_rapl_msr 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 pcspkr module mod: cannot find or load object file for crc32_pclmul 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 sb_edac module mod: cannot find or load object file for rapl module mod: cannot find or load object file for rpcsec_gss_krb5 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 ffffffffc075dc80 fld ffffffffc074b000 126976 /tmp/crash-anaysis.ln5GO/modules/fld.ko ffffffffc077d740 ec ffffffffc076b000 81920 /tmp/crash-anaysis.ln5GO/modules/ec.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc10d0740 libcfs ffffffffc10b0000 225280 /tmp/crash-anaysis.ln5GO/modules/libcfs.ko ffffffffc11c33c0 lnet ffffffffc10e8000 1490944 /tmp/crash-anaysis.ln5GO/modules/lnet.ko ffffffffc127e900 ksocklnd ffffffffc1255000 270336 /tmp/crash-anaysis.ln5GO/modules/ksocklnd.ko ffffffffc13dda80 obdclass ffffffffc1298000 4403200 /tmp/crash-anaysis.ln5GO/modules/obdclass.ko ffffffffc19580c0 ptlrpc ffffffffc16cc000 4173824 /tmp/crash-anaysis.ln5GO/modules/ptlrpc.ko ffffffffc1b16880 ptlrpc_gss ffffffffc1ac8000 524288 /tmp/crash-anaysis.ln5GO/modules/ptlrpc_gss.ko ffffffffc1b5bac0 fid ffffffffc1b49000 126976 /tmp/crash-anaysis.ln5GO/modules/fid.ko ffffffffc1ba6080 lmv ffffffffc1b69000 372736 /tmp/crash-anaysis.ln5GO/modules/lmv.ko ffffffffc1c472c0 osc ffffffffc1bc5000 790528 /tmp/crash-anaysis.ln5GO/modules/osc.ko ffffffffc1cdfa00 lov ffffffffc1c87000 552960 /tmp/crash-anaysis.ln5GO/modules/lov.ko ffffffffc1d59b80 mdc ffffffffc1d0f000 466944 /tmp/crash-anaysis.ln5GO/modules/mdc.ko ffffffffc1d9e000 mgc ffffffffc1d82000 184320 /tmp/crash-anaysis.ln5GO/modules/mgc.ko ffffffffc1dd15c0 obdecho ffffffffc1db0000 225280 /tmp/crash-anaysis.ln5GO/modules/obdecho.ko ffffffffc1ea2340 lfsck ffffffffc1de8000 1081344 /tmp/crash-anaysis.ln5GO/modules/lfsck.ko ffffffffc1f71240 lquota ffffffffc1ef1000 786432 /tmp/crash-anaysis.ln5GO/modules/lquota.ko ffffffffc201cac0 osd_zfs ffffffffc1fb2000 655360 /tmp/crash-anaysis.ln5GO/modules/osd_zfs.ko ffffffffc20b6400 mgs ffffffffc2053000 626688 /tmp/crash-anaysis.ln5GO/modules/mgs.ko ffffffffc2168080 mdd ffffffffc20ed000 745472 /tmp/crash-anaysis.ln5GO/modules/mdd.ko ffffffffc22b2940 mdt ffffffffc21a4000 1654784 /tmp/crash-anaysis.ln5GO/modules/mdt.ko ffffffffc23e4480 lod ffffffffc2339000 1052672 /tmp/crash-anaysis.ln5GO/modules/lod.ko ffffffffc24a8a40 ofd ffffffffc243b000 679936 /tmp/crash-anaysis.ln5GO/modules/ofd.ko ffffffffc253df80 osp ffffffffc24e2000 573440 /tmp/crash-anaysis.ln5GO/modules/osp.ko ffffffffc26a36c0 lustre ffffffffc256f000 1912832 /tmp/crash-anaysis.ln5GO/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, 0xffff91c947b4b468) 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 967 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, 0xffff91c947afa528) 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 850 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, 0xffff91c943f71088) 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, 0xffff91ca80ebad28) 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 851 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 3692 total debug pages from 4 CPUs to /tmp/crash-anaysis.ln5GO/lustre.bin