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.qCvVI/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68878/testresults/sanity3-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg617-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Thu Aug 27 16:27:46 EDT 2026 UPTIME: 02:09:56 LOAD AVERAGE: 1.61, 1.89, 1.83 TASKS: 401 NODENAME: oleg617-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: 41430 COMMAND: "ll_ost_io00_004" TASK: ffff9c0080424f80 [THREAD_INFO: ffff9c0080424f80] 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_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 i2c_piix4 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 crc32c_intel module mod: cannot find or load object file for pcspkr module mod: cannot find or load object file for rapl module mod: cannot find or load object file for ata_generic module mod: cannot find or load object file for dns_resolver 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 intel_rapl_common 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 ffffffffc0485c80 fld ffffffffc0473000 126976 /tmp/crash-anaysis.qCvVI/modules/fld.ko ffffffffc04a5740 ec ffffffffc0493000 81920 /tmp/crash-anaysis.qCvVI/modules/ec.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0dfa740 libcfs ffffffffc0dda000 225280 /tmp/crash-anaysis.qCvVI/modules/libcfs.ko ffffffffc0eed3c0 lnet ffffffffc0e12000 1490944 /tmp/crash-anaysis.qCvVI/modules/lnet.ko ffffffffc0fa8900 ksocklnd ffffffffc0f7f000 270336 /tmp/crash-anaysis.qCvVI/modules/ksocklnd.ko ffffffffc1106840 obdclass ffffffffc0fc2000 4399104 /tmp/crash-anaysis.qCvVI/modules/obdclass.ko ffffffffc16810c0 ptlrpc ffffffffc13f5000 4173824 /tmp/crash-anaysis.qCvVI/modules/ptlrpc.ko ffffffffc183f880 ptlrpc_gss ffffffffc17f1000 524288 /tmp/crash-anaysis.qCvVI/modules/ptlrpc_gss.ko ffffffffc1884ac0 fid ffffffffc1872000 126976 /tmp/crash-anaysis.qCvVI/modules/fid.ko ffffffffc18cf080 lmv ffffffffc1892000 372736 /tmp/crash-anaysis.qCvVI/modules/lmv.ko ffffffffc196ed00 osc ffffffffc18ee000 778240 /tmp/crash-anaysis.qCvVI/modules/osc.ko ffffffffc1a05a00 lov ffffffffc19ad000 552960 /tmp/crash-anaysis.qCvVI/modules/lov.ko ffffffffc1a7fb80 mdc ffffffffc1a35000 466944 /tmp/crash-anaysis.qCvVI/modules/mdc.ko ffffffffc1ac4000 mgc ffffffffc1aa8000 184320 /tmp/crash-anaysis.qCvVI/modules/mgc.ko ffffffffc1af75c0 obdecho ffffffffc1ad6000 225280 /tmp/crash-anaysis.qCvVI/modules/obdecho.ko ffffffffc1bc8200 lfsck ffffffffc1b0e000 1081344 /tmp/crash-anaysis.qCvVI/modules/lfsck.ko ffffffffc1c97240 lquota ffffffffc1c17000 786432 /tmp/crash-anaysis.qCvVI/modules/lquota.ko ffffffffc1d42ac0 osd_zfs ffffffffc1cd8000 655360 /tmp/crash-anaysis.qCvVI/modules/osd_zfs.ko ffffffffc1ddc400 mgs ffffffffc1d79000 626688 /tmp/crash-anaysis.qCvVI/modules/mgs.ko ffffffffc1e8e080 mdd ffffffffc1e13000 745472 /tmp/crash-anaysis.qCvVI/modules/mdd.ko ffffffffc1fd8840 mdt ffffffffc1eca000 1654784 /tmp/crash-anaysis.qCvVI/modules/mdt.ko ffffffffc210a480 lod ffffffffc205f000 1052672 /tmp/crash-anaysis.qCvVI/modules/lod.ko ffffffffc21cfc40 ofd ffffffffc2161000 688128 /tmp/crash-anaysis.qCvVI/modules/ofd.ko ffffffffc2265f80 osp ffffffffc220a000 573440 /tmp/crash-anaysis.qCvVI/modules/osp.ko ffffffffc23cb6c0 lustre ffffffffc2297000 1912832 /tmp/crash-anaysis.qCvVI/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, 0xffff9bff42402f08) 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, 0xffff9c0042b85d88) 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, 0xffff9c0042bdb1a8) 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, 0xffff9bff42db1168) 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_trace_pages(0, 5, 0xffff9bff43bf9c88) 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 128 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_trace_pages(1, 5, 0xffff9bff434f5148) 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 128 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_trace_pages(2, 5, 0xffff9c00663a5628) 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 128 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_trace_pages(3, 5, 0xffff9bff44d8e648) 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 128 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 4608 total debug pages from 4 CPUs to /tmp/crash-anaysis.qCvVI/lustre.bin