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.FC4Oo/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68863/testresults/sanity-pfl-zfs-rocky8.10_x86_64-rocky8.10_x86_64-retry1/oleg652-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Thu Aug 27 10:04:47 EDT 2026 UPTIME: 00:57:05 LOAD AVERAGE: 1.78, 1.18, 1.16 TASKS: 410 NODENAME: oleg652-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: 6702 COMMAND: "ll_ost_io00_000" TASK: ffff972f6017a7c0 [THREAD_INFO: ffff972f6017a7c0] 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_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 pcspkr 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 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 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 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 rapl 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 ffffffffc074cc80 fld ffffffffc073a000 126976 /tmp/crash-anaysis.FC4Oo/modules/fld.ko ffffffffc076c740 ec ffffffffc075a000 81920 /tmp/crash-anaysis.FC4Oo/modules/ec.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc10bf740 libcfs ffffffffc109f000 225280 /tmp/crash-anaysis.FC4Oo/modules/libcfs.ko ffffffffc11b23c0 lnet ffffffffc10d7000 1490944 /tmp/crash-anaysis.FC4Oo/modules/lnet.ko ffffffffc126d900 ksocklnd ffffffffc1244000 270336 /tmp/crash-anaysis.FC4Oo/modules/ksocklnd.ko ffffffffc13cca80 obdclass ffffffffc1287000 4403200 /tmp/crash-anaysis.FC4Oo/modules/obdclass.ko ffffffffc19470c0 ptlrpc ffffffffc16bb000 4173824 /tmp/crash-anaysis.FC4Oo/modules/ptlrpc.ko ffffffffc1b05880 ptlrpc_gss ffffffffc1ab7000 524288 /tmp/crash-anaysis.FC4Oo/modules/ptlrpc_gss.ko ffffffffc1b4aac0 fid ffffffffc1b38000 126976 /tmp/crash-anaysis.FC4Oo/modules/fid.ko ffffffffc1b95080 lmv ffffffffc1b58000 372736 /tmp/crash-anaysis.FC4Oo/modules/lmv.ko ffffffffc1c362c0 osc ffffffffc1bb4000 790528 /tmp/crash-anaysis.FC4Oo/modules/osc.ko ffffffffc1ccea00 lov ffffffffc1c76000 552960 /tmp/crash-anaysis.FC4Oo/modules/lov.ko ffffffffc1d48b80 mdc ffffffffc1cfe000 466944 /tmp/crash-anaysis.FC4Oo/modules/mdc.ko ffffffffc1d8d000 mgc ffffffffc1d71000 184320 /tmp/crash-anaysis.FC4Oo/modules/mgc.ko ffffffffc1dc05c0 obdecho ffffffffc1d9f000 225280 /tmp/crash-anaysis.FC4Oo/modules/obdecho.ko ffffffffc1e91340 lfsck ffffffffc1dd7000 1081344 /tmp/crash-anaysis.FC4Oo/modules/lfsck.ko ffffffffc1f60240 lquota ffffffffc1ee0000 786432 /tmp/crash-anaysis.FC4Oo/modules/lquota.ko ffffffffc200bac0 osd_zfs ffffffffc1fa1000 655360 /tmp/crash-anaysis.FC4Oo/modules/osd_zfs.ko ffffffffc20a5400 mgs ffffffffc2042000 626688 /tmp/crash-anaysis.FC4Oo/modules/mgs.ko ffffffffc2157080 mdd ffffffffc20dc000 745472 /tmp/crash-anaysis.FC4Oo/modules/mdd.ko ffffffffc22a1940 mdt ffffffffc2193000 1654784 /tmp/crash-anaysis.FC4Oo/modules/mdt.ko ffffffffc23d3480 lod ffffffffc2328000 1052672 /tmp/crash-anaysis.FC4Oo/modules/lod.ko ffffffffc2497a40 ofd ffffffffc242a000 679936 /tmp/crash-anaysis.FC4Oo/modules/ofd.ko ffffffffc252cf80 osp ffffffffc24d1000 573440 /tmp/crash-anaysis.FC4Oo/modules/osp.ko ffffffffc26926c0 lustre ffffffffc255e000 1912832 /tmp/crash-anaysis.FC4Oo/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, 0xffff972e43a33588) 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, 0xffff972e44345c08) 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 1024 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, 0xffff972f456646e8) 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, 0xffff972e421d9448) 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 4096 total debug pages from 4 CPUs to /tmp/crash-anaysis.FC4Oo/lustre.bin