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.KQ3UL/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68898/testresults/sanity-compr-special6-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg211-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 10:58:38 EDT 2026 UPTIME: 00:06:54 LOAD AVERAGE: 1.89, 1.61, 0.80 TASKS: 397 NODENAME: oleg211-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: 7901 COMMAND: "dp_sync_taskq" TASK: ffff8bf38dcb8000 [THREAD_INFO: ffff8bf38dcb8000] 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 crc32_pclmul 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 ghash_clmulni_intel module mod: cannot find or load object file for ata_piix 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 i2c_piix4 module mod: cannot find or load object file for intel_rapl_msr 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_common module mod: cannot find or load object file for dns_resolver module mod: cannot find or load object file for sb_edac 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 ffffffffc06aac80 fld ffffffffc0698000 126976 /tmp/crash-anaysis.KQ3UL/modules/fld.ko ffffffffc06ca740 ec ffffffffc06b8000 81920 /tmp/crash-anaysis.KQ3UL/modules/ec.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc101d740 libcfs ffffffffc0ffd000 225280 /tmp/crash-anaysis.KQ3UL/modules/libcfs.ko ffffffffc11103c0 lnet ffffffffc1035000 1490944 /tmp/crash-anaysis.KQ3UL/modules/lnet.ko ffffffffc11cb900 ksocklnd ffffffffc11a2000 270336 /tmp/crash-anaysis.KQ3UL/modules/ksocklnd.ko ffffffffc132c0c0 obdclass ffffffffc11e5000 4415488 /tmp/crash-anaysis.KQ3UL/modules/obdclass.ko ffffffffc18a80c0 ptlrpc ffffffffc161c000 4173824 /tmp/crash-anaysis.KQ3UL/modules/ptlrpc.ko ffffffffc1a66880 ptlrpc_gss ffffffffc1a18000 524288 /tmp/crash-anaysis.KQ3UL/modules/ptlrpc_gss.ko ffffffffc1aabac0 fid ffffffffc1a99000 126976 /tmp/crash-anaysis.KQ3UL/modules/fid.ko ffffffffc1af6080 lmv ffffffffc1ab9000 372736 /tmp/crash-anaysis.KQ3UL/modules/lmv.ko ffffffffc1b97380 osc ffffffffc1b15000 790528 /tmp/crash-anaysis.KQ3UL/modules/osc.ko ffffffffc1c2fa00 lov ffffffffc1bd7000 552960 /tmp/crash-anaysis.KQ3UL/modules/lov.ko ffffffffc1ca9b80 mdc ffffffffc1c5f000 466944 /tmp/crash-anaysis.KQ3UL/modules/mdc.ko ffffffffc1cee000 mgc ffffffffc1cd2000 184320 /tmp/crash-anaysis.KQ3UL/modules/mgc.ko ffffffffc1d215c0 obdecho ffffffffc1d00000 225280 /tmp/crash-anaysis.KQ3UL/modules/obdecho.ko ffffffffc1df2340 lfsck ffffffffc1d38000 1081344 /tmp/crash-anaysis.KQ3UL/modules/lfsck.ko ffffffffc1ec1240 lquota ffffffffc1e41000 786432 /tmp/crash-anaysis.KQ3UL/modules/lquota.ko ffffffffc1f6db80 osd_zfs ffffffffc1f02000 659456 /tmp/crash-anaysis.KQ3UL/modules/osd_zfs.ko ffffffffc2007400 mgs ffffffffc1fa4000 626688 /tmp/crash-anaysis.KQ3UL/modules/mgs.ko ffffffffc20b9080 mdd ffffffffc203e000 745472 /tmp/crash-anaysis.KQ3UL/modules/mdd.ko ffffffffc2203900 mdt ffffffffc20f5000 1654784 /tmp/crash-anaysis.KQ3UL/modules/mdt.ko ffffffffc2335540 lod ffffffffc228a000 1056768 /tmp/crash-anaysis.KQ3UL/modules/lod.ko ffffffffc23fbe00 ofd ffffffffc238d000 688128 /tmp/crash-anaysis.KQ3UL/modules/ofd.ko ffffffffc2491f80 osp ffffffffc2436000 573440 /tmp/crash-anaysis.KQ3UL/modules/osp.ko ffffffffc25f74c0 lustre ffffffffc24c3000 1908736 /tmp/crash-anaysis.KQ3UL/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, 0xffff8bf383904088) 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 257 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, 0xffff8bf3898241a8) 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 240 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, 0xffff8bf3b46dd9c8) 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 200 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, 0xffff8bf382fde4c8) 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 173 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 870 total debug pages from 4 CPUs to /tmp/crash-anaysis.KQ3UL/lustre.bin