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.cU4NZ/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68883/testresults/sanity-compr-special7-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg256-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 13:29:35 EDT 2026 UPTIME: 00:07:24 LOAD AVERAGE: 1.63, 1.39, 0.73 TASKS: 349 NODENAME: oleg256-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: 6503 COMMAND: "dp_sync_taskq" TASK: ffff9b393bc64f80 [THREAD_INFO: ffff9b393bc64f80] 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_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 crc32c_intel module mod: cannot find or load object file for crct10dif_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 rapl 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 i2c_piix4 module mod: cannot find or load object file for ghash_clmulni_intel module mod: cannot find or load object file for dns_resolver module mod: cannot find or load object file for crc32_pclmul 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 ata_piix module mod: cannot find or load object file for squashfs 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 ffffffffc06ea740 libcfs ffffffffc06ca000 225280 /tmp/crash-anaysis.cU4NZ/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc110c3c0 lnet ffffffffc1031000 1490944 /tmp/crash-anaysis.cU4NZ/modules/lnet.ko ffffffffc11c7900 ksocklnd ffffffffc119e000 270336 /tmp/crash-anaysis.cU4NZ/modules/ksocklnd.ko ffffffffc13280c0 obdclass ffffffffc11e1000 4415488 /tmp/crash-anaysis.cU4NZ/modules/obdclass.ko ffffffffc18a40c0 ptlrpc ffffffffc1618000 4173824 /tmp/crash-anaysis.cU4NZ/modules/ptlrpc.ko ffffffffc1a62880 ptlrpc_gss ffffffffc1a14000 524288 /tmp/crash-anaysis.cU4NZ/modules/ptlrpc_gss.ko ffffffffc1aa7c80 fld ffffffffc1a95000 126976 /tmp/crash-anaysis.cU4NZ/modules/fld.ko ffffffffc1ac7ac0 fid ffffffffc1ab5000 126976 /tmp/crash-anaysis.cU4NZ/modules/fid.ko ffffffffc1ae7740 ec ffffffffc1ad5000 81920 /tmp/crash-anaysis.cU4NZ/modules/ec.ko ffffffffc1b27080 lmv ffffffffc1aea000 372736 /tmp/crash-anaysis.cU4NZ/modules/lmv.ko ffffffffc1bc8480 osc ffffffffc1b46000 790528 /tmp/crash-anaysis.cU4NZ/modules/osc.ko ffffffffc1c60b00 lov ffffffffc1c08000 552960 /tmp/crash-anaysis.cU4NZ/modules/lov.ko ffffffffc1cdab80 mdc ffffffffc1c90000 466944 /tmp/crash-anaysis.cU4NZ/modules/mdc.ko ffffffffc1d1f000 mgc ffffffffc1d03000 184320 /tmp/crash-anaysis.cU4NZ/modules/mgc.ko ffffffffc1d525c0 obdecho ffffffffc1d31000 225280 /tmp/crash-anaysis.cU4NZ/modules/obdecho.ko ffffffffc1e23340 lfsck ffffffffc1d69000 1081344 /tmp/crash-anaysis.cU4NZ/modules/lfsck.ko ffffffffc1ef2240 lquota ffffffffc1e72000 786432 /tmp/crash-anaysis.cU4NZ/modules/lquota.ko ffffffffc1f9eb80 osd_zfs ffffffffc1f33000 659456 /tmp/crash-anaysis.cU4NZ/modules/osd_zfs.ko ffffffffc2038400 mgs ffffffffc1fd5000 626688 /tmp/crash-anaysis.cU4NZ/modules/mgs.ko ffffffffc20ea0c0 mdd ffffffffc206f000 745472 /tmp/crash-anaysis.cU4NZ/modules/mdd.ko ffffffffc2234900 mdt ffffffffc2126000 1654784 /tmp/crash-anaysis.cU4NZ/modules/mdt.ko ffffffffc2368900 lod ffffffffc22bb000 1064960 /tmp/crash-anaysis.cU4NZ/modules/lod.ko ffffffffc242ee40 ofd ffffffffc23c0000 688128 /tmp/crash-anaysis.cU4NZ/modules/ofd.ko ffffffffc24c4f80 osp ffffffffc2469000 573440 /tmp/crash-anaysis.cU4NZ/modules/osp.ko ffffffffc262c780 lustre ffffffffc24f6000 1925120 /tmp/crash-anaysis.cU4NZ/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, 0xffff9b390a113fe8) 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, 0xffff9b390a122428) 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 129 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, 0xffff9b390a325788) 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 131 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, 0xffff9b3904d6c3e8) 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 134 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 534 total debug pages from 4 CPUs to /tmp/crash-anaysis.cU4NZ/lustre.bin