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.sOwsD/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68908/testresults/sanity-compr-special2-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg604-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 09:24:24 EDT 2026 UPTIME: 00:04:40 LOAD AVERAGE: 1.58, 1.12, 0.49 TASKS: 356 NODENAME: oleg604-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 0000000000000028" PID: 6495 COMMAND: "dp_sync_taskq" TASK: ffff9a68108f27c0 [THREAD_INFO: ffff9a68108f27c0] 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_region_hash module mod: cannot find or load object file for dm_log 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 ghash_clmulni_intel module mod: cannot find or load object file for crc32_pclmul module mod: cannot find or load object file for ata_generic module mod: cannot find or load object file for pcspkr module mod: cannot find or load object file for intel_rapl_msr module mod: cannot find or load object file for dns_resolver 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 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 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 ffffffffc07d6c80 fld ffffffffc07c4000 126976 /tmp/crash-anaysis.sOwsD/modules/fld.ko ffffffffc07f6740 ec ffffffffc07e4000 81920 /tmp/crash-anaysis.sOwsD/modules/ec.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc1149740 libcfs ffffffffc1129000 225280 /tmp/crash-anaysis.sOwsD/modules/libcfs.ko ffffffffc123c3c0 lnet ffffffffc1161000 1490944 /tmp/crash-anaysis.sOwsD/modules/lnet.ko ffffffffc12f7900 ksocklnd ffffffffc12ce000 270336 /tmp/crash-anaysis.sOwsD/modules/ksocklnd.ko ffffffffc1456a80 obdclass ffffffffc1311000 4403200 /tmp/crash-anaysis.sOwsD/modules/obdclass.ko ffffffffc19d10c0 ptlrpc ffffffffc1745000 4173824 /tmp/crash-anaysis.sOwsD/modules/ptlrpc.ko ffffffffc1b8f880 ptlrpc_gss ffffffffc1b41000 524288 /tmp/crash-anaysis.sOwsD/modules/ptlrpc_gss.ko ffffffffc1bd4ac0 fid ffffffffc1bc2000 126976 /tmp/crash-anaysis.sOwsD/modules/fid.ko ffffffffc1c1f080 lmv ffffffffc1be2000 372736 /tmp/crash-anaysis.sOwsD/modules/lmv.ko ffffffffc1cc0200 osc ffffffffc1c3e000 790528 /tmp/crash-anaysis.sOwsD/modules/osc.ko ffffffffc1d58a00 lov ffffffffc1d00000 552960 /tmp/crash-anaysis.sOwsD/modules/lov.ko ffffffffc1dd2b80 mdc ffffffffc1d88000 466944 /tmp/crash-anaysis.sOwsD/modules/mdc.ko ffffffffc1e17000 mgc ffffffffc1dfb000 184320 /tmp/crash-anaysis.sOwsD/modules/mgc.ko ffffffffc1e4a5c0 obdecho ffffffffc1e29000 225280 /tmp/crash-anaysis.sOwsD/modules/obdecho.ko ffffffffc1f1b340 lfsck ffffffffc1e61000 1081344 /tmp/crash-anaysis.sOwsD/modules/lfsck.ko ffffffffc1fea240 lquota ffffffffc1f6a000 786432 /tmp/crash-anaysis.sOwsD/modules/lquota.ko ffffffffc2095ac0 osd_zfs ffffffffc202b000 655360 /tmp/crash-anaysis.sOwsD/modules/osd_zfs.ko ffffffffc212f400 mgs ffffffffc20cc000 626688 /tmp/crash-anaysis.sOwsD/modules/mgs.ko ffffffffc21e1080 mdd ffffffffc2166000 745472 /tmp/crash-anaysis.sOwsD/modules/mdd.ko ffffffffc232b940 mdt ffffffffc221d000 1654784 /tmp/crash-anaysis.sOwsD/modules/mdt.ko ffffffffc245d480 lod ffffffffc23b2000 1052672 /tmp/crash-anaysis.sOwsD/modules/lod.ko ffffffffc2522ac0 ofd ffffffffc24b4000 684032 /tmp/crash-anaysis.sOwsD/modules/ofd.ko ffffffffc25b7f80 osp ffffffffc255c000 573440 /tmp/crash-anaysis.sOwsD/modules/osp.ko ffffffffc271d6c0 lustre ffffffffc25e9000 1912832 /tmp/crash-anaysis.sOwsD/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, 0xffff9a6807861ee8) 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 140 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, 0xffff9a680811fec8) 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 118 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, 0xffff9a6810b966a8) 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 134 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, 0xffff9a680986f3a8) 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 124 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 516 total debug pages from 4 CPUs to /tmp/crash-anaysis.sOwsD/lustre.bin