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.3IQlU/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68883/testresults/sanity-compr-special6-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg246-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 13:30:07 EDT 2026 UPTIME: 00:07:27 LOAD AVERAGE: 1.48, 1.50, 0.79 TASKS: 347 NODENAME: oleg246-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: 6535 COMMAND: "dp_sync_taskq" TASK: ffff9b37094d0000 [THREAD_INFO: ffff9b37094d0000] CPU: 3 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 serio_raw module mod: cannot find or load object file for crc32_pclmul 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 ata_generic 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 crc32c_intel module mod: cannot find or load object file for pcspkr module mod: cannot find or load object file for i2c_piix4 module mod: cannot find or load object file for sb_edac 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 rpcsec_gss_krb5 module mod: cannot find or load object file for rapl 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 ffffffffc0730740 libcfs ffffffffc0710000 225280 /tmp/crash-anaysis.3IQlU/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc11503c0 lnet ffffffffc1075000 1490944 /tmp/crash-anaysis.3IQlU/modules/lnet.ko ffffffffc120b900 ksocklnd ffffffffc11e2000 270336 /tmp/crash-anaysis.3IQlU/modules/ksocklnd.ko ffffffffc136c0c0 obdclass ffffffffc1225000 4415488 /tmp/crash-anaysis.3IQlU/modules/obdclass.ko ffffffffc18e80c0 ptlrpc ffffffffc165c000 4173824 /tmp/crash-anaysis.3IQlU/modules/ptlrpc.ko ffffffffc1aa6880 ptlrpc_gss ffffffffc1a58000 524288 /tmp/crash-anaysis.3IQlU/modules/ptlrpc_gss.ko ffffffffc1aebc80 fld ffffffffc1ad9000 126976 /tmp/crash-anaysis.3IQlU/modules/fld.ko ffffffffc1b0bac0 fid ffffffffc1af9000 126976 /tmp/crash-anaysis.3IQlU/modules/fid.ko ffffffffc1b2b740 ec ffffffffc1b19000 81920 /tmp/crash-anaysis.3IQlU/modules/ec.ko ffffffffc1b6b080 lmv ffffffffc1b2e000 372736 /tmp/crash-anaysis.3IQlU/modules/lmv.ko ffffffffc1c0c480 osc ffffffffc1b8a000 790528 /tmp/crash-anaysis.3IQlU/modules/osc.ko ffffffffc1ca4b00 lov ffffffffc1c4c000 552960 /tmp/crash-anaysis.3IQlU/modules/lov.ko ffffffffc1d1eb80 mdc ffffffffc1cd4000 466944 /tmp/crash-anaysis.3IQlU/modules/mdc.ko ffffffffc1d63000 mgc ffffffffc1d47000 184320 /tmp/crash-anaysis.3IQlU/modules/mgc.ko ffffffffc1d965c0 obdecho ffffffffc1d75000 225280 /tmp/crash-anaysis.3IQlU/modules/obdecho.ko ffffffffc1e67340 lfsck ffffffffc1dad000 1081344 /tmp/crash-anaysis.3IQlU/modules/lfsck.ko ffffffffc1f36240 lquota ffffffffc1eb6000 786432 /tmp/crash-anaysis.3IQlU/modules/lquota.ko ffffffffc1fe2b80 osd_zfs ffffffffc1f77000 659456 /tmp/crash-anaysis.3IQlU/modules/osd_zfs.ko ffffffffc207c400 mgs ffffffffc2019000 626688 /tmp/crash-anaysis.3IQlU/modules/mgs.ko ffffffffc212e0c0 mdd ffffffffc20b3000 745472 /tmp/crash-anaysis.3IQlU/modules/mdd.ko ffffffffc2278900 mdt ffffffffc216a000 1654784 /tmp/crash-anaysis.3IQlU/modules/mdt.ko ffffffffc23ac900 lod ffffffffc22ff000 1064960 /tmp/crash-anaysis.3IQlU/modules/lod.ko ffffffffc2472e40 ofd ffffffffc2404000 688128 /tmp/crash-anaysis.3IQlU/modules/ofd.ko ffffffffc2508f80 osp ffffffffc24ad000 573440 /tmp/crash-anaysis.3IQlU/modules/osp.ko ffffffffc2670780 lustre ffffffffc253a000 1925120 /tmp/crash-anaysis.3IQlU/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, 0xffff9b37099865e8) 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 138 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, 0xffff9b37063e9968) 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 136 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, 0xffff9b3707d21f88) 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 128 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, 0xffff9b3703191da8) 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 115 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 517 total debug pages from 4 CPUs to /tmp/crash-anaysis.3IQlU/lustre.bin