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.fJqsq/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68899/testresults/sanity-compr-special4-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg602-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 11:03:09 EDT 2026 UPTIME: 00:05:30 LOAD AVERAGE: 1.36, 1.14, 0.54 TASKS: 411 NODENAME: oleg602-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: 7888 COMMAND: "dp_sync_taskq" TASK: ffff8ae6bc60cf80 [THREAD_INFO: ffff8ae6bc60cf80] 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_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 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 crct10dif_pclmul module mod: cannot find or load object file for pcspkr 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 i2c_piix4 module mod: cannot find or load object file for ata_piix 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 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 ffffffffc076fc80 fld ffffffffc075d000 126976 /tmp/crash-anaysis.fJqsq/modules/fld.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc10da740 libcfs ffffffffc10ba000 225280 /tmp/crash-anaysis.fJqsq/modules/libcfs.ko ffffffffc11cd3c0 lnet ffffffffc10f2000 1490944 /tmp/crash-anaysis.fJqsq/modules/lnet.ko ffffffffc1288900 ksocklnd ffffffffc125f000 270336 /tmp/crash-anaysis.fJqsq/modules/ksocklnd.ko ffffffffc13e90c0 obdclass ffffffffc12a2000 4415488 /tmp/crash-anaysis.fJqsq/modules/obdclass.ko ffffffffc19650c0 ptlrpc ffffffffc16d9000 4173824 /tmp/crash-anaysis.fJqsq/modules/ptlrpc.ko ffffffffc1b23880 ptlrpc_gss ffffffffc1ad5000 524288 /tmp/crash-anaysis.fJqsq/modules/ptlrpc_gss.ko ffffffffc1b68ac0 fid ffffffffc1b56000 126976 /tmp/crash-anaysis.fJqsq/modules/fid.ko ffffffffc1b88740 ec ffffffffc1b76000 81920 /tmp/crash-anaysis.fJqsq/modules/ec.ko ffffffffc1bc8080 lmv ffffffffc1b8b000 372736 /tmp/crash-anaysis.fJqsq/modules/lmv.ko ffffffffc1c69340 osc ffffffffc1be7000 790528 /tmp/crash-anaysis.fJqsq/modules/osc.ko ffffffffc1d01a00 lov ffffffffc1ca9000 552960 /tmp/crash-anaysis.fJqsq/modules/lov.ko ffffffffc1d7bb80 mdc ffffffffc1d31000 466944 /tmp/crash-anaysis.fJqsq/modules/mdc.ko ffffffffc1dc0000 mgc ffffffffc1da4000 184320 /tmp/crash-anaysis.fJqsq/modules/mgc.ko ffffffffc1df35c0 obdecho ffffffffc1dd2000 225280 /tmp/crash-anaysis.fJqsq/modules/obdecho.ko ffffffffc1ec4340 lfsck ffffffffc1e0a000 1081344 /tmp/crash-anaysis.fJqsq/modules/lfsck.ko ffffffffc1f93240 lquota ffffffffc1f13000 786432 /tmp/crash-anaysis.fJqsq/modules/lquota.ko ffffffffc203fb80 osd_zfs ffffffffc1fd4000 659456 /tmp/crash-anaysis.fJqsq/modules/osd_zfs.ko ffffffffc20d9400 mgs ffffffffc2076000 626688 /tmp/crash-anaysis.fJqsq/modules/mgs.ko ffffffffc218b080 mdd ffffffffc2110000 745472 /tmp/crash-anaysis.fJqsq/modules/mdd.ko ffffffffc22d5900 mdt ffffffffc21c7000 1654784 /tmp/crash-anaysis.fJqsq/modules/mdt.ko ffffffffc2407540 lod ffffffffc235c000 1056768 /tmp/crash-anaysis.fJqsq/modules/lod.ko ffffffffc24cde00 ofd ffffffffc245f000 688128 /tmp/crash-anaysis.fJqsq/modules/ofd.ko ffffffffc2563f80 osp ffffffffc2508000 573440 /tmp/crash-anaysis.fJqsq/modules/osp.ko ffffffffc26c94c0 lustre ffffffffc2595000 1908736 /tmp/crash-anaysis.fJqsq/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, 0xffff8ae6831a9a08) 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 213 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, 0xffff8ae698641ac8) 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 166 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, 0xffff8ae69b2c5f08) 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 196 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, 0xffff8ae692162088) 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 192 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 767 total debug pages from 4 CPUs to /tmp/crash-anaysis.fJqsq/lustre.bin