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.zVv82/vmlinux [TAINTED] DUMPFILE: /exports/testreports/65100/testresults/conf-sanity2-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg215-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Fri Jun 12 14:18:33 EDT 2026 UPTIME: 02:13:10 LOAD AVERAGE: 1.46, 1.90, 1.84 TASKS: 357 NODENAME: oleg215-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 0000000000000000" PID: 248521 COMMAND: "mdt00_002" TASK: ffff9047909727c0 [THREAD_INFO: ffff9047909727c0] CPU: 1 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 ata_generic module mod: cannot find or load object file for crct10dif_pclmul module mod: cannot find or load object file for crc32_pclmul 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 serio_raw module mod: cannot find or load object file for ata_piix module mod: cannot find or load object file for dns_resolver module mod: cannot find or load object file for ghash_clmulni_intel 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 i2c_piix4 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 intel_rapl_common module MODULE NAME BASE SIZE OBJECT FILE ffffffffc05dc480 ost ffffffffc05d9000 20480 /tmp/crash-anaysis.zVv82/modules/ost.ko mod: cannot find or load object file for rapl module mod: cannot find or load object file for nfsv4 module mod: cannot find or load object file for auth_rpcgss module ffffffffc07c82c0 fld ffffffffc07b3000 135168 /tmp/crash-anaysis.zVv82/modules/fld.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc113bac0 libcfs ffffffffc110a000 344064 /tmp/crash-anaysis.zVv82/modules/libcfs.ko ffffffffc1203500 lnet ffffffffc115f000 1150976 /tmp/crash-anaysis.zVv82/modules/lnet.ko ffffffffc12a2a80 ksocklnd ffffffffc1279000 274432 /tmp/crash-anaysis.zVv82/modules/ksocklnd.ko ffffffffc13ea300 obdclass ffffffffc12bd000 4296704 /tmp/crash-anaysis.zVv82/modules/obdclass.ko ffffffffc1915180 ptlrpc ffffffffc16d7000 3698688 /tmp/crash-anaysis.zVv82/modules/ptlrpc.ko ffffffffc1aaab80 ptlrpc_gss ffffffffc1a5f000 516096 /tmp/crash-anaysis.zVv82/modules/ptlrpc_gss.ko ffffffffc1af0b40 fid ffffffffc1ade000 122880 /tmp/crash-anaysis.zVv82/modules/fid.ko ffffffffc1b31240 lmv ffffffffc1afd000 319488 /tmp/crash-anaysis.zVv82/modules/lmv.ko ffffffffc1bb92c0 osc ffffffffc1b4c000 671744 /tmp/crash-anaysis.zVv82/modules/osc.ko ffffffffc1c42c40 lov ffffffffc1bf1000 516096 /tmp/crash-anaysis.zVv82/modules/lov.ko ffffffffc1cb4ac0 mdc ffffffffc1c70000 430080 /tmp/crash-anaysis.zVv82/modules/mdc.ko ffffffffc1cefb00 mgc ffffffffc1cda000 147456 /tmp/crash-anaysis.zVv82/modules/mgc.ko ffffffffc1d21700 obdecho ffffffffc1cff000 229376 /tmp/crash-anaysis.zVv82/modules/obdecho.ko ffffffffc1dff140 lfsck ffffffffc1d38000 1163264 /tmp/crash-anaysis.zVv82/modules/lfsck.ko ffffffffc1ec9580 lquota ffffffffc1e55000 704512 /tmp/crash-anaysis.zVv82/modules/lquota.ko ffffffffc1f69700 osd_zfs ffffffffc1f02000 638976 /tmp/crash-anaysis.zVv82/modules/osd_zfs.ko ffffffffc1ff9ec0 mgs ffffffffc1f9f000 573440 /tmp/crash-anaysis.zVv82/modules/mgs.ko ffffffffc20aa480 mdd ffffffffc202c000 757760 /tmp/crash-anaysis.zVv82/modules/mdd.ko ffffffffc21e3540 mdt ffffffffc20e6000 1556480 /tmp/crash-anaysis.zVv82/modules/mdt.ko ffffffffc23018c0 lod ffffffffc2263000 978944 /tmp/crash-anaysis.zVv82/modules/lod.ko ffffffffc23af180 ofd ffffffffc2353000 565248 /tmp/crash-anaysis.zVv82/modules/ofd.ko ffffffffc2439500 osp ffffffffc23de000 569344 /tmp/crash-anaysis.zVv82/modules/osp.ko ffffffffc2570f00 lustre ffffffffc246a000 1634304 /tmp/crash-anaysis.zVv82/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, 0xffff9047856ff3e8) 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 409 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, 0xffff9047ad71c068) 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 409 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, 0xffff9047badd7228) 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 409 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, 0xffff9047b5194328) 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 409 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, 0xffff90468753afc8) 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 1 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, 0xffff9047b9d273a8) 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 1 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, 0xffff9047892d28e8) 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 1 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, 0xffff9046826c4588) 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 1 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 1640 total debug pages from 4 CPUs to /tmp/crash-anaysis.zVv82/lustre.bin