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.Oovnx/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68899/testresults/sanity-compr-special8-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg248-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 11:02:28 EDT 2026 UPTIME: 00:06:16 LOAD AVERAGE: 1.40, 1.27, 0.64 TASKS: 354 NODENAME: oleg248-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: 6522 COMMAND: "dp_sync_taskq" TASK: ffff8c1ac5094f80 [THREAD_INFO: ffff8c1ac5094f80] CPU: 2 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_region_hash module mod: cannot find or load object file for dm_log module mod: cannot find or load object file for dm_mirror module mod: cannot find or load object file for serio_raw module mod: cannot find or load object file for ata_piix 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 crc32_pclmul module mod: cannot find or load object file for ata_generic module mod: cannot find or load object file for squashfs module mod: cannot find or load object file for crct10dif_pclmul 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 intel_rapl_msr 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 sb_edac module mod: cannot find or load object file for rapl 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 ffffffffc0634740 libcfs ffffffffc0614000 225280 /tmp/crash-anaysis.Oovnx/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc10563c0 lnet ffffffffc0f7b000 1490944 /tmp/crash-anaysis.Oovnx/modules/lnet.ko ffffffffc1111900 ksocklnd ffffffffc10e8000 270336 /tmp/crash-anaysis.Oovnx/modules/ksocklnd.ko ffffffffc12720c0 obdclass ffffffffc112b000 4415488 /tmp/crash-anaysis.Oovnx/modules/obdclass.ko ffffffffc17ee0c0 ptlrpc ffffffffc1562000 4173824 /tmp/crash-anaysis.Oovnx/modules/ptlrpc.ko ffffffffc19ac880 ptlrpc_gss ffffffffc195e000 524288 /tmp/crash-anaysis.Oovnx/modules/ptlrpc_gss.ko ffffffffc19f1c80 fld ffffffffc19df000 126976 /tmp/crash-anaysis.Oovnx/modules/fld.ko ffffffffc1a11ac0 fid ffffffffc19ff000 126976 /tmp/crash-anaysis.Oovnx/modules/fid.ko ffffffffc1a31740 ec ffffffffc1a1f000 81920 /tmp/crash-anaysis.Oovnx/modules/ec.ko ffffffffc1a71080 lmv ffffffffc1a34000 372736 /tmp/crash-anaysis.Oovnx/modules/lmv.ko ffffffffc1b12340 osc ffffffffc1a90000 790528 /tmp/crash-anaysis.Oovnx/modules/osc.ko ffffffffc1baaa00 lov ffffffffc1b52000 552960 /tmp/crash-anaysis.Oovnx/modules/lov.ko ffffffffc1c24b80 mdc ffffffffc1bda000 466944 /tmp/crash-anaysis.Oovnx/modules/mdc.ko ffffffffc1c69000 mgc ffffffffc1c4d000 184320 /tmp/crash-anaysis.Oovnx/modules/mgc.ko ffffffffc1c9c5c0 obdecho ffffffffc1c7b000 225280 /tmp/crash-anaysis.Oovnx/modules/obdecho.ko ffffffffc1d6d340 lfsck ffffffffc1cb3000 1081344 /tmp/crash-anaysis.Oovnx/modules/lfsck.ko ffffffffc1e3c240 lquota ffffffffc1dbc000 786432 /tmp/crash-anaysis.Oovnx/modules/lquota.ko ffffffffc1ee8b80 osd_zfs ffffffffc1e7d000 659456 /tmp/crash-anaysis.Oovnx/modules/osd_zfs.ko ffffffffc1f82400 mgs ffffffffc1f1f000 626688 /tmp/crash-anaysis.Oovnx/modules/mgs.ko ffffffffc2034080 mdd ffffffffc1fb9000 745472 /tmp/crash-anaysis.Oovnx/modules/mdd.ko ffffffffc217e900 mdt ffffffffc2070000 1654784 /tmp/crash-anaysis.Oovnx/modules/mdt.ko ffffffffc22b0540 lod ffffffffc2205000 1056768 /tmp/crash-anaysis.Oovnx/modules/lod.ko ffffffffc2376e00 ofd ffffffffc2308000 688128 /tmp/crash-anaysis.Oovnx/modules/ofd.ko ffffffffc240cf80 osp ffffffffc23b1000 573440 /tmp/crash-anaysis.Oovnx/modules/osp.ko ffffffffc25724c0 lustre ffffffffc243e000 1908736 /tmp/crash-anaysis.Oovnx/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, 0xffff8c1ac7ef8048) 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 117 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, 0xffff8c1ac3831088) 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, 0xffff8c1ac53b8c88) 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, 0xffff8c1ac7e35b48) 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 117 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 503 total debug pages from 4 CPUs to /tmp/crash-anaysis.Oovnx/lustre.bin