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.nkEsb/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68908/testresults/sanity-compr-special9-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg643-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 09:26:12 EDT 2026 UPTIME: 00:06:13 LOAD AVERAGE: 1.58, 1.37, 0.66 TASKS: 400 NODENAME: oleg643-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: 7885 COMMAND: "dp_sync_taskq" TASK: ffff9d9175840000 [THREAD_INFO: ffff9d9175840000] CPU: 1 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 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 i2c_piix4 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 pcspkr module mod: cannot find or load object file for ata_piix module mod: cannot find or load object file for rapl module mod: cannot find or load object file for crc32c_intel module mod: cannot find or load object file for crct10dif_pclmul module mod: cannot find or load object file for squashfs module mod: cannot find or load object file for dns_resolver 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 ffffffffc07f7740 libcfs ffffffffc07d7000 225280 /tmp/crash-anaysis.nkEsb/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc12193c0 lnet ffffffffc113e000 1490944 /tmp/crash-anaysis.nkEsb/modules/lnet.ko ffffffffc12d4900 ksocklnd ffffffffc12ab000 270336 /tmp/crash-anaysis.nkEsb/modules/ksocklnd.ko ffffffffc1433a80 obdclass ffffffffc12ee000 4403200 /tmp/crash-anaysis.nkEsb/modules/obdclass.ko ffffffffc19ae0c0 ptlrpc ffffffffc1722000 4173824 /tmp/crash-anaysis.nkEsb/modules/ptlrpc.ko ffffffffc1b6c880 ptlrpc_gss ffffffffc1b1e000 524288 /tmp/crash-anaysis.nkEsb/modules/ptlrpc_gss.ko ffffffffc1bb1c80 fld ffffffffc1b9f000 126976 /tmp/crash-anaysis.nkEsb/modules/fld.ko ffffffffc1bd1ac0 fid ffffffffc1bbf000 126976 /tmp/crash-anaysis.nkEsb/modules/fid.ko ffffffffc1bf1740 ec ffffffffc1bdf000 81920 /tmp/crash-anaysis.nkEsb/modules/ec.ko ffffffffc1c31080 lmv ffffffffc1bf4000 372736 /tmp/crash-anaysis.nkEsb/modules/lmv.ko ffffffffc1cd2200 osc ffffffffc1c50000 790528 /tmp/crash-anaysis.nkEsb/modules/osc.ko ffffffffc1d6aa00 lov ffffffffc1d12000 552960 /tmp/crash-anaysis.nkEsb/modules/lov.ko ffffffffc1de4b80 mdc ffffffffc1d9a000 466944 /tmp/crash-anaysis.nkEsb/modules/mdc.ko ffffffffc1e29000 mgc ffffffffc1e0d000 184320 /tmp/crash-anaysis.nkEsb/modules/mgc.ko ffffffffc1e5c5c0 obdecho ffffffffc1e3b000 225280 /tmp/crash-anaysis.nkEsb/modules/obdecho.ko ffffffffc1f2d340 lfsck ffffffffc1e73000 1081344 /tmp/crash-anaysis.nkEsb/modules/lfsck.ko ffffffffc1ffc240 lquota ffffffffc1f7c000 786432 /tmp/crash-anaysis.nkEsb/modules/lquota.ko ffffffffc20a7ac0 osd_zfs ffffffffc203d000 655360 /tmp/crash-anaysis.nkEsb/modules/osd_zfs.ko ffffffffc2141400 mgs ffffffffc20de000 626688 /tmp/crash-anaysis.nkEsb/modules/mgs.ko ffffffffc21f3080 mdd ffffffffc2178000 745472 /tmp/crash-anaysis.nkEsb/modules/mdd.ko ffffffffc233d940 mdt ffffffffc222f000 1654784 /tmp/crash-anaysis.nkEsb/modules/mdt.ko ffffffffc246f480 lod ffffffffc23c4000 1052672 /tmp/crash-anaysis.nkEsb/modules/lod.ko ffffffffc2534ac0 ofd ffffffffc24c6000 684032 /tmp/crash-anaysis.nkEsb/modules/ofd.ko ffffffffc25c9f80 osp ffffffffc256e000 573440 /tmp/crash-anaysis.nkEsb/modules/osp.ko ffffffffc272f6c0 lustre ffffffffc25fb000 1912832 /tmp/crash-anaysis.nkEsb/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, 0xffff9d9150ae28e8) 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 232 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, 0xffff9d9158347428) 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 213 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, 0xffff9d9142e775a8) 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 213 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, 0xffff9d9145f2b968) 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 242 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 900 total debug pages from 4 CPUs to /tmp/crash-anaysis.nkEsb/lustre.bin