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.9rOaM/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68908/testresults/sanity-compr-special6-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg621-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 10:39:31 EDT 2026 UPTIME: 00:05:07 LOAD AVERAGE: 1.47, 1.35, 0.63 TASKS: 354 NODENAME: oleg621-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: 6506 COMMAND: "dp_sync_taskq" TASK: ffff98c1c904a7c0 [THREAD_INFO: ffff98c1c904a7c0] 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 ghash_clmulni_intel module mod: cannot find or load object file for ata_generic module mod: cannot find or load object file for crc32_pclmul module mod: cannot find or load object file for i2c_piix4 module mod: cannot find or load object file for rapl 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 ata_piix module mod: cannot find or load object file for intel_rapl_msr module mod: cannot find or load object file for crct10dif_pclmul 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 rpcsec_gss_krb5 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 nfsv4 module mod: cannot find or load object file for auth_rpcgss module MODULE NAME BASE SIZE OBJECT FILE ffffffffc05c1c80 fld ffffffffc05af000 126976 /tmp/crash-anaysis.9rOaM/modules/fld.ko ffffffffc05e1740 ec ffffffffc05cf000 81920 /tmp/crash-anaysis.9rOaM/modules/ec.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0f34740 libcfs ffffffffc0f14000 225280 /tmp/crash-anaysis.9rOaM/modules/libcfs.ko ffffffffc10273c0 lnet ffffffffc0f4c000 1490944 /tmp/crash-anaysis.9rOaM/modules/lnet.ko ffffffffc10e2900 ksocklnd ffffffffc10b9000 270336 /tmp/crash-anaysis.9rOaM/modules/ksocklnd.ko ffffffffc1241a80 obdclass ffffffffc10fc000 4403200 /tmp/crash-anaysis.9rOaM/modules/obdclass.ko ffffffffc17bc0c0 ptlrpc ffffffffc1530000 4173824 /tmp/crash-anaysis.9rOaM/modules/ptlrpc.ko ffffffffc197a880 ptlrpc_gss ffffffffc192c000 524288 /tmp/crash-anaysis.9rOaM/modules/ptlrpc_gss.ko ffffffffc19bfac0 fid ffffffffc19ad000 126976 /tmp/crash-anaysis.9rOaM/modules/fid.ko ffffffffc1a0a080 lmv ffffffffc19cd000 372736 /tmp/crash-anaysis.9rOaM/modules/lmv.ko ffffffffc1aab200 osc ffffffffc1a29000 790528 /tmp/crash-anaysis.9rOaM/modules/osc.ko ffffffffc1b43a00 lov ffffffffc1aeb000 552960 /tmp/crash-anaysis.9rOaM/modules/lov.ko ffffffffc1bbdb80 mdc ffffffffc1b73000 466944 /tmp/crash-anaysis.9rOaM/modules/mdc.ko ffffffffc1c02000 mgc ffffffffc1be6000 184320 /tmp/crash-anaysis.9rOaM/modules/mgc.ko ffffffffc1c355c0 obdecho ffffffffc1c14000 225280 /tmp/crash-anaysis.9rOaM/modules/obdecho.ko ffffffffc1d06340 lfsck ffffffffc1c4c000 1081344 /tmp/crash-anaysis.9rOaM/modules/lfsck.ko ffffffffc1dd5240 lquota ffffffffc1d55000 786432 /tmp/crash-anaysis.9rOaM/modules/lquota.ko ffffffffc1e80ac0 osd_zfs ffffffffc1e16000 655360 /tmp/crash-anaysis.9rOaM/modules/osd_zfs.ko ffffffffc1f1a400 mgs ffffffffc1eb7000 626688 /tmp/crash-anaysis.9rOaM/modules/mgs.ko ffffffffc1fcc080 mdd ffffffffc1f51000 745472 /tmp/crash-anaysis.9rOaM/modules/mdd.ko ffffffffc2116940 mdt ffffffffc2008000 1654784 /tmp/crash-anaysis.9rOaM/modules/mdt.ko ffffffffc2248480 lod ffffffffc219d000 1052672 /tmp/crash-anaysis.9rOaM/modules/lod.ko ffffffffc230dac0 ofd ffffffffc229f000 684032 /tmp/crash-anaysis.9rOaM/modules/ofd.ko ffffffffc23a2f80 osp ffffffffc2347000 573440 /tmp/crash-anaysis.9rOaM/modules/osp.ko ffffffffc25086c0 lustre ffffffffc23d4000 1912832 /tmp/crash-anaysis.9rOaM/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, 0xffff98c1d64bdc48) 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 142 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, 0xffff98c1d01347e8) 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, 0xffff98c1c4e85128) 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 117 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, 0xffff98c1c4df6108) 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 146 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.9rOaM/lustre.bin