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.jkFg2/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68883/testresults/sanity-compr-special4-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64-retry1/oleg322-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 13:31:12 EDT 2026 UPTIME: 00:07:20 LOAD AVERAGE: 1.54, 1.45, 0.82 TASKS: 402 NODENAME: oleg322-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: 7891 COMMAND: "dp_sync_taskq" TASK: ffff93f6ffd727c0 [THREAD_INFO: ffff93f6ffd727c0] 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 intel_rapl_msr module mod: cannot find or load object file for crct10dif_pclmul 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 serio_raw module mod: cannot find or load object file for crc32_pclmul module mod: cannot find or load object file for rapl 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 dns_resolver 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 intel_rapl_common 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 ffffffffc046a740 libcfs ffffffffc044a000 225280 /tmp/crash-anaysis.jkFg2/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0e8c3c0 lnet ffffffffc0db1000 1490944 /tmp/crash-anaysis.jkFg2/modules/lnet.ko ffffffffc0f47900 ksocklnd ffffffffc0f1e000 270336 /tmp/crash-anaysis.jkFg2/modules/ksocklnd.ko ffffffffc10a80c0 obdclass ffffffffc0f61000 4415488 /tmp/crash-anaysis.jkFg2/modules/obdclass.ko ffffffffc16240c0 ptlrpc ffffffffc1398000 4173824 /tmp/crash-anaysis.jkFg2/modules/ptlrpc.ko ffffffffc17e2880 ptlrpc_gss ffffffffc1794000 524288 /tmp/crash-anaysis.jkFg2/modules/ptlrpc_gss.ko ffffffffc1827c80 fld ffffffffc1815000 126976 /tmp/crash-anaysis.jkFg2/modules/fld.ko ffffffffc1847ac0 fid ffffffffc1835000 126976 /tmp/crash-anaysis.jkFg2/modules/fid.ko ffffffffc1867740 ec ffffffffc1855000 81920 /tmp/crash-anaysis.jkFg2/modules/ec.ko ffffffffc18a7080 lmv ffffffffc186a000 372736 /tmp/crash-anaysis.jkFg2/modules/lmv.ko ffffffffc1948480 osc ffffffffc18c6000 790528 /tmp/crash-anaysis.jkFg2/modules/osc.ko ffffffffc19e0b00 lov ffffffffc1988000 552960 /tmp/crash-anaysis.jkFg2/modules/lov.ko ffffffffc1a5ab80 mdc ffffffffc1a10000 466944 /tmp/crash-anaysis.jkFg2/modules/mdc.ko ffffffffc1a9f000 mgc ffffffffc1a83000 184320 /tmp/crash-anaysis.jkFg2/modules/mgc.ko ffffffffc1ad25c0 obdecho ffffffffc1ab1000 225280 /tmp/crash-anaysis.jkFg2/modules/obdecho.ko ffffffffc1ba3340 lfsck ffffffffc1ae9000 1081344 /tmp/crash-anaysis.jkFg2/modules/lfsck.ko ffffffffc1c72240 lquota ffffffffc1bf2000 786432 /tmp/crash-anaysis.jkFg2/modules/lquota.ko ffffffffc1d1eb80 osd_zfs ffffffffc1cb3000 659456 /tmp/crash-anaysis.jkFg2/modules/osd_zfs.ko ffffffffc1db8400 mgs ffffffffc1d55000 626688 /tmp/crash-anaysis.jkFg2/modules/mgs.ko ffffffffc1e6a0c0 mdd ffffffffc1def000 745472 /tmp/crash-anaysis.jkFg2/modules/mdd.ko ffffffffc1fb4900 mdt ffffffffc1ea6000 1654784 /tmp/crash-anaysis.jkFg2/modules/mdt.ko ffffffffc20e8900 lod ffffffffc203b000 1064960 /tmp/crash-anaysis.jkFg2/modules/lod.ko ffffffffc21aee40 ofd ffffffffc2140000 688128 /tmp/crash-anaysis.jkFg2/modules/ofd.ko ffffffffc2244f80 osp ffffffffc21e9000 573440 /tmp/crash-anaysis.jkFg2/modules/osp.ko ffffffffc23ac780 lustre ffffffffc2276000 1925120 /tmp/crash-anaysis.jkFg2/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, 0xffff93f6d9fe2b88) 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 190 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, 0xffff93f6c834d148) 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 263 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, 0xffff93f6c5e9eda8) 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 202 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, 0xffff93f6d1ba5c28) 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 227 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 882 total debug pages from 4 CPUs to /tmp/crash-anaysis.jkFg2/lustre.bin