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.vtrzI/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68907/testresults/sanity-compr-special2-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg610-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 10:46:35 EDT 2026 UPTIME: 00:05:09 LOAD AVERAGE: 1.41, 1.16, 0.55 TASKS: 356 NODENAME: oleg610-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: 6517 COMMAND: "dp_sync_taskq" TASK: ffff91b279c727c0 [THREAD_INFO: ffff91b279c727c0] 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 ghash_clmulni_intel 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 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 intel_rapl_msr module mod: cannot find or load object file for serio_raw 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 crc32c_intel 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 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 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 ffffffffc0604c80 fld ffffffffc05f2000 126976 /tmp/crash-anaysis.vtrzI/modules/fld.ko ffffffffc0624740 ec ffffffffc0612000 81920 /tmp/crash-anaysis.vtrzI/modules/ec.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0f77740 libcfs ffffffffc0f57000 225280 /tmp/crash-anaysis.vtrzI/modules/libcfs.ko ffffffffc106a3c0 lnet ffffffffc0f8f000 1490944 /tmp/crash-anaysis.vtrzI/modules/lnet.ko ffffffffc1125900 ksocklnd ffffffffc10fc000 270336 /tmp/crash-anaysis.vtrzI/modules/ksocklnd.ko ffffffffc1285f80 obdclass ffffffffc113f000 4415488 /tmp/crash-anaysis.vtrzI/modules/obdclass.ko ffffffffc18020c0 ptlrpc ffffffffc1576000 4173824 /tmp/crash-anaysis.vtrzI/modules/ptlrpc.ko ffffffffc19c0880 ptlrpc_gss ffffffffc1972000 524288 /tmp/crash-anaysis.vtrzI/modules/ptlrpc_gss.ko ffffffffc1a05ac0 fid ffffffffc19f3000 126976 /tmp/crash-anaysis.vtrzI/modules/fid.ko ffffffffc1a50080 lmv ffffffffc1a13000 372736 /tmp/crash-anaysis.vtrzI/modules/lmv.ko ffffffffc1af1200 osc ffffffffc1a6f000 790528 /tmp/crash-anaysis.vtrzI/modules/osc.ko ffffffffc1b89a00 lov ffffffffc1b31000 552960 /tmp/crash-anaysis.vtrzI/modules/lov.ko ffffffffc1c03b80 mdc ffffffffc1bb9000 466944 /tmp/crash-anaysis.vtrzI/modules/mdc.ko ffffffffc1c48000 mgc ffffffffc1c2c000 184320 /tmp/crash-anaysis.vtrzI/modules/mgc.ko ffffffffc1c7b5c0 obdecho ffffffffc1c5a000 225280 /tmp/crash-anaysis.vtrzI/modules/obdecho.ko ffffffffc1d4c340 lfsck ffffffffc1c92000 1081344 /tmp/crash-anaysis.vtrzI/modules/lfsck.ko ffffffffc1e1b240 lquota ffffffffc1d9b000 786432 /tmp/crash-anaysis.vtrzI/modules/lquota.ko ffffffffc1ec6ac0 osd_zfs ffffffffc1e5c000 655360 /tmp/crash-anaysis.vtrzI/modules/osd_zfs.ko ffffffffc1f60400 mgs ffffffffc1efd000 626688 /tmp/crash-anaysis.vtrzI/modules/mgs.ko ffffffffc2012080 mdd ffffffffc1f97000 745472 /tmp/crash-anaysis.vtrzI/modules/mdd.ko ffffffffc215c940 mdt ffffffffc204e000 1654784 /tmp/crash-anaysis.vtrzI/modules/mdt.ko ffffffffc228e480 lod ffffffffc21e3000 1052672 /tmp/crash-anaysis.vtrzI/modules/lod.ko ffffffffc2354e40 ofd ffffffffc22e5000 692224 /tmp/crash-anaysis.vtrzI/modules/ofd.ko ffffffffc23eaf80 osp ffffffffc238f000 573440 /tmp/crash-anaysis.vtrzI/modules/osp.ko ffffffffc25506c0 lustre ffffffffc241c000 1912832 /tmp/crash-anaysis.vtrzI/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, 0xffff91b242be8748) 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 97 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, 0xffff91b243938948) 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 113 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, 0xffff91b245e85d28) 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 119 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, 0xffff91b24352fce8) 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 147 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 476 total debug pages from 4 CPUs to /tmp/crash-anaysis.vtrzI/lustre.bin