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.TViZQ/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68898/testresults/sanity-compr-special10-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg459-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 10:57:56 EDT 2026 UPTIME: 00:07:24 LOAD AVERAGE: 1.36, 1.48, 0.78 TASKS: 408 NODENAME: oleg459-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: 7890 COMMAND: "dp_sync_taskq" TASK: ffff9da6c8328000 [THREAD_INFO: ffff9da6c8328000] 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 libata module mod: cannot find or load object file for crc32c_intel 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 i2c_piix4 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 ghash_clmulni_intel module mod: cannot find or load object file for crc32_pclmul module mod: cannot find or load object file for pcspkr module mod: cannot find or load object file for dns_resolver module mod: cannot find or load object file for ata_piix 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 rapl 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 ffffffffc0666740 libcfs ffffffffc0646000 225280 /tmp/crash-anaysis.TViZQ/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc10883c0 lnet ffffffffc0fad000 1490944 /tmp/crash-anaysis.TViZQ/modules/lnet.ko ffffffffc1143900 ksocklnd ffffffffc111a000 270336 /tmp/crash-anaysis.TViZQ/modules/ksocklnd.ko ffffffffc12a40c0 obdclass ffffffffc115d000 4415488 /tmp/crash-anaysis.TViZQ/modules/obdclass.ko ffffffffc18200c0 ptlrpc ffffffffc1594000 4173824 /tmp/crash-anaysis.TViZQ/modules/ptlrpc.ko ffffffffc19de880 ptlrpc_gss ffffffffc1990000 524288 /tmp/crash-anaysis.TViZQ/modules/ptlrpc_gss.ko ffffffffc1a23c80 fld ffffffffc1a11000 126976 /tmp/crash-anaysis.TViZQ/modules/fld.ko ffffffffc1a43ac0 fid ffffffffc1a31000 126976 /tmp/crash-anaysis.TViZQ/modules/fid.ko ffffffffc1a63740 ec ffffffffc1a51000 81920 /tmp/crash-anaysis.TViZQ/modules/ec.ko ffffffffc1aa3080 lmv ffffffffc1a66000 372736 /tmp/crash-anaysis.TViZQ/modules/lmv.ko ffffffffc1b44380 osc ffffffffc1ac2000 790528 /tmp/crash-anaysis.TViZQ/modules/osc.ko ffffffffc1bdca00 lov ffffffffc1b84000 552960 /tmp/crash-anaysis.TViZQ/modules/lov.ko ffffffffc1c56b80 mdc ffffffffc1c0c000 466944 /tmp/crash-anaysis.TViZQ/modules/mdc.ko ffffffffc1c9b000 mgc ffffffffc1c7f000 184320 /tmp/crash-anaysis.TViZQ/modules/mgc.ko ffffffffc1cce5c0 obdecho ffffffffc1cad000 225280 /tmp/crash-anaysis.TViZQ/modules/obdecho.ko ffffffffc1d9f340 lfsck ffffffffc1ce5000 1081344 /tmp/crash-anaysis.TViZQ/modules/lfsck.ko ffffffffc1e6e240 lquota ffffffffc1dee000 786432 /tmp/crash-anaysis.TViZQ/modules/lquota.ko ffffffffc1f1ab80 osd_zfs ffffffffc1eaf000 659456 /tmp/crash-anaysis.TViZQ/modules/osd_zfs.ko ffffffffc1fb4400 mgs ffffffffc1f51000 626688 /tmp/crash-anaysis.TViZQ/modules/mgs.ko ffffffffc2066080 mdd ffffffffc1feb000 745472 /tmp/crash-anaysis.TViZQ/modules/mdd.ko ffffffffc21b0900 mdt ffffffffc20a2000 1654784 /tmp/crash-anaysis.TViZQ/modules/mdt.ko ffffffffc22e2540 lod ffffffffc2237000 1056768 /tmp/crash-anaysis.TViZQ/modules/lod.ko ffffffffc23a8e00 ofd ffffffffc233a000 688128 /tmp/crash-anaysis.TViZQ/modules/ofd.ko ffffffffc243ef80 osp ffffffffc23e3000 573440 /tmp/crash-anaysis.TViZQ/modules/osp.ko ffffffffc25a44c0 lustre ffffffffc2470000 1908736 /tmp/crash-anaysis.TViZQ/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, 0xffff9da6d0530e08) 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 205 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, 0xffff9da6c4e12a28) 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 233 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, 0xffff9da6c6b9a028) 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 187 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, 0xffff9da6e1521408) 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 225 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 850 total debug pages from 4 CPUs to /tmp/crash-anaysis.TViZQ/lustre.bin