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.nVrSZ/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68883/testresults/sanity-compr-special5-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg259-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 13:29:48 EDT 2026 UPTIME: 00:07:50 LOAD AVERAGE: 1.18, 1.58, 0.91 TASKS: 344 NODENAME: oleg259-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: 6496 COMMAND: "dp_sync_taskq" TASK: ffff8de64b650000 [THREAD_INFO: ffff8de64b650000] 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_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 i2c_piix4 module mod: cannot find or load object file for pcspkr module mod: cannot find or load object file for ata_generic 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 intel_rapl_common module mod: cannot find or load object file for ghash_clmulni_intel module mod: cannot find or load object file for crc32_pclmul module mod: cannot find or load object file for dns_resolver module mod: cannot find or load object file for crct10dif_pclmul module mod: cannot find or load object file for sb_edac 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 rapl 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 ffffffffc069c740 libcfs ffffffffc067c000 225280 /tmp/crash-anaysis.nVrSZ/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc10be3c0 lnet ffffffffc0fe3000 1490944 /tmp/crash-anaysis.nVrSZ/modules/lnet.ko ffffffffc1179900 ksocklnd ffffffffc1150000 270336 /tmp/crash-anaysis.nVrSZ/modules/ksocklnd.ko ffffffffc12da0c0 obdclass ffffffffc1193000 4415488 /tmp/crash-anaysis.nVrSZ/modules/obdclass.ko ffffffffc18560c0 ptlrpc ffffffffc15ca000 4173824 /tmp/crash-anaysis.nVrSZ/modules/ptlrpc.ko ffffffffc1a14880 ptlrpc_gss ffffffffc19c6000 524288 /tmp/crash-anaysis.nVrSZ/modules/ptlrpc_gss.ko ffffffffc1a59c80 fld ffffffffc1a47000 126976 /tmp/crash-anaysis.nVrSZ/modules/fld.ko ffffffffc1a79ac0 fid ffffffffc1a67000 126976 /tmp/crash-anaysis.nVrSZ/modules/fid.ko ffffffffc1a99740 ec ffffffffc1a87000 81920 /tmp/crash-anaysis.nVrSZ/modules/ec.ko ffffffffc1ad9080 lmv ffffffffc1a9c000 372736 /tmp/crash-anaysis.nVrSZ/modules/lmv.ko ffffffffc1b7a480 osc ffffffffc1af8000 790528 /tmp/crash-anaysis.nVrSZ/modules/osc.ko ffffffffc1c12b00 lov ffffffffc1bba000 552960 /tmp/crash-anaysis.nVrSZ/modules/lov.ko ffffffffc1c8cb80 mdc ffffffffc1c42000 466944 /tmp/crash-anaysis.nVrSZ/modules/mdc.ko ffffffffc1cd1000 mgc ffffffffc1cb5000 184320 /tmp/crash-anaysis.nVrSZ/modules/mgc.ko ffffffffc1d045c0 obdecho ffffffffc1ce3000 225280 /tmp/crash-anaysis.nVrSZ/modules/obdecho.ko ffffffffc1dd5340 lfsck ffffffffc1d1b000 1081344 /tmp/crash-anaysis.nVrSZ/modules/lfsck.ko ffffffffc1ea4240 lquota ffffffffc1e24000 786432 /tmp/crash-anaysis.nVrSZ/modules/lquota.ko ffffffffc1f50b80 osd_zfs ffffffffc1ee5000 659456 /tmp/crash-anaysis.nVrSZ/modules/osd_zfs.ko ffffffffc1fea400 mgs ffffffffc1f87000 626688 /tmp/crash-anaysis.nVrSZ/modules/mgs.ko ffffffffc209c0c0 mdd ffffffffc2021000 745472 /tmp/crash-anaysis.nVrSZ/modules/mdd.ko ffffffffc21e6900 mdt ffffffffc20d8000 1654784 /tmp/crash-anaysis.nVrSZ/modules/mdt.ko ffffffffc231a900 lod ffffffffc226d000 1064960 /tmp/crash-anaysis.nVrSZ/modules/lod.ko ffffffffc23e0e40 ofd ffffffffc2372000 688128 /tmp/crash-anaysis.nVrSZ/modules/ofd.ko ffffffffc2476f80 osp ffffffffc241b000 573440 /tmp/crash-anaysis.nVrSZ/modules/osp.ko ffffffffc25de780 lustre ffffffffc24a8000 1925120 /tmp/crash-anaysis.nVrSZ/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, 0xffff8de64f1cf848) 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 115 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, 0xffff8de64a4594a8) 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 153 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, 0xffff8de6539ca168) 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 140 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, 0xffff8de649ed4ca8) 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 128 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 536 total debug pages from 4 CPUs to /tmp/crash-anaysis.nVrSZ/lustre.bin