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.1rHNk/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68890/testresults/sanity-compr-special8-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg621-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 13:23:56 EDT 2026 UPTIME: 00:07:04 LOAD AVERAGE: 1.23, 1.22, 0.64 TASKS: 406 NODENAME: oleg621-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: 7892 COMMAND: "dp_sync_taskq" TASK: ffff8a7b7ca34f80 [THREAD_INFO: ffff8a7b7ca34f80] 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_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 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 ata_generic module mod: cannot find or load object file for i2c_piix4 module mod: cannot find or load object file for ata_piix 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 intel_rapl_msr 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 sb_edac module mod: cannot find or load object file for dns_resolver 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 ffffffffc07e1740 libcfs ffffffffc07c1000 225280 /tmp/crash-anaysis.1rHNk/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc12033c0 lnet ffffffffc1128000 1490944 /tmp/crash-anaysis.1rHNk/modules/lnet.ko ffffffffc12be900 ksocklnd ffffffffc1295000 270336 /tmp/crash-anaysis.1rHNk/modules/ksocklnd.ko ffffffffc141f0c0 obdclass ffffffffc12d8000 4415488 /tmp/crash-anaysis.1rHNk/modules/obdclass.ko ffffffffc199b0c0 ptlrpc ffffffffc170f000 4173824 /tmp/crash-anaysis.1rHNk/modules/ptlrpc.ko ffffffffc1b59880 ptlrpc_gss ffffffffc1b0b000 524288 /tmp/crash-anaysis.1rHNk/modules/ptlrpc_gss.ko ffffffffc1b9ec80 fld ffffffffc1b8c000 126976 /tmp/crash-anaysis.1rHNk/modules/fld.ko ffffffffc1bbeac0 fid ffffffffc1bac000 126976 /tmp/crash-anaysis.1rHNk/modules/fid.ko ffffffffc1bde740 ec ffffffffc1bcc000 81920 /tmp/crash-anaysis.1rHNk/modules/ec.ko ffffffffc1c1e080 lmv ffffffffc1be1000 372736 /tmp/crash-anaysis.1rHNk/modules/lmv.ko ffffffffc1cbf380 osc ffffffffc1c3d000 790528 /tmp/crash-anaysis.1rHNk/modules/osc.ko ffffffffc1d57a00 lov ffffffffc1cff000 552960 /tmp/crash-anaysis.1rHNk/modules/lov.ko ffffffffc1dd1b80 mdc ffffffffc1d87000 466944 /tmp/crash-anaysis.1rHNk/modules/mdc.ko ffffffffc1e16000 mgc ffffffffc1dfa000 184320 /tmp/crash-anaysis.1rHNk/modules/mgc.ko ffffffffc1e495c0 obdecho ffffffffc1e28000 225280 /tmp/crash-anaysis.1rHNk/modules/obdecho.ko ffffffffc1f1a340 lfsck ffffffffc1e60000 1081344 /tmp/crash-anaysis.1rHNk/modules/lfsck.ko ffffffffc1fe9240 lquota ffffffffc1f69000 786432 /tmp/crash-anaysis.1rHNk/modules/lquota.ko ffffffffc2095b80 osd_zfs ffffffffc202a000 659456 /tmp/crash-anaysis.1rHNk/modules/osd_zfs.ko ffffffffc212f400 mgs ffffffffc20cc000 626688 /tmp/crash-anaysis.1rHNk/modules/mgs.ko ffffffffc21e1080 mdd ffffffffc2166000 745472 /tmp/crash-anaysis.1rHNk/modules/mdd.ko ffffffffc232b900 mdt ffffffffc221d000 1654784 /tmp/crash-anaysis.1rHNk/modules/mdt.ko ffffffffc245d540 lod ffffffffc23b2000 1056768 /tmp/crash-anaysis.1rHNk/modules/lod.ko ffffffffc2523e40 ofd ffffffffc24b5000 688128 /tmp/crash-anaysis.1rHNk/modules/ofd.ko ffffffffc25b9f80 osp ffffffffc255e000 573440 /tmp/crash-anaysis.1rHNk/modules/osp.ko ffffffffc271f4c0 lustre ffffffffc25eb000 1908736 /tmp/crash-anaysis.1rHNk/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, 0xffff8a7b6ac60e48) 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 248 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, 0xffff8a7b48c1b748) 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 217 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, 0xffff8a7b4520e348) 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 214 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, 0xffff8a7b52df7788) 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 189 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 868 total debug pages from 4 CPUs to /tmp/crash-anaysis.1rHNk/lustre.bin