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.VK4uA/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68887/testresults/sanity-compr-special7-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg231-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 13:35:50 EDT 2026 UPTIME: 00:07:05 LOAD AVERAGE: 1.64, 1.58, 0.80 TASKS: 404 NODENAME: oleg231-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: 7919 COMMAND: "dp_sync_taskq" TASK: ffff8fd2667627c0 [THREAD_INFO: ffff8fd2667627c0] 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_log module mod: cannot find or load object file for dm_region_hash 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 serio_raw 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 ata_piix 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 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 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 ffffffffc05f4c80 fld ffffffffc05e2000 126976 /tmp/crash-anaysis.VK4uA/modules/fld.ko ffffffffc0614740 ec ffffffffc0602000 81920 /tmp/crash-anaysis.VK4uA/modules/ec.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0f67740 libcfs ffffffffc0f47000 225280 /tmp/crash-anaysis.VK4uA/modules/libcfs.ko ffffffffc105a3c0 lnet ffffffffc0f7f000 1490944 /tmp/crash-anaysis.VK4uA/modules/lnet.ko ffffffffc1115900 ksocklnd ffffffffc10ec000 270336 /tmp/crash-anaysis.VK4uA/modules/ksocklnd.ko ffffffffc12760c0 obdclass ffffffffc112f000 4415488 /tmp/crash-anaysis.VK4uA/modules/obdclass.ko ffffffffc17f20c0 ptlrpc ffffffffc1566000 4173824 /tmp/crash-anaysis.VK4uA/modules/ptlrpc.ko ffffffffc19b0880 ptlrpc_gss ffffffffc1962000 524288 /tmp/crash-anaysis.VK4uA/modules/ptlrpc_gss.ko ffffffffc19f5ac0 fid ffffffffc19e3000 126976 /tmp/crash-anaysis.VK4uA/modules/fid.ko ffffffffc1a40080 lmv ffffffffc1a03000 372736 /tmp/crash-anaysis.VK4uA/modules/lmv.ko ffffffffc1ae1440 osc ffffffffc1a5f000 790528 /tmp/crash-anaysis.VK4uA/modules/osc.ko ffffffffc1b79a80 lov ffffffffc1b21000 552960 /tmp/crash-anaysis.VK4uA/modules/lov.ko ffffffffc1bf3b80 mdc ffffffffc1ba9000 466944 /tmp/crash-anaysis.VK4uA/modules/mdc.ko ffffffffc1c38000 mgc ffffffffc1c1c000 184320 /tmp/crash-anaysis.VK4uA/modules/mgc.ko ffffffffc1c6b5c0 obdecho ffffffffc1c4a000 225280 /tmp/crash-anaysis.VK4uA/modules/obdecho.ko ffffffffc1d3c340 lfsck ffffffffc1c82000 1081344 /tmp/crash-anaysis.VK4uA/modules/lfsck.ko ffffffffc1e0b240 lquota ffffffffc1d8b000 786432 /tmp/crash-anaysis.VK4uA/modules/lquota.ko ffffffffc1eb7b80 osd_zfs ffffffffc1e4c000 659456 /tmp/crash-anaysis.VK4uA/modules/osd_zfs.ko ffffffffc1f51400 mgs ffffffffc1eee000 626688 /tmp/crash-anaysis.VK4uA/modules/mgs.ko ffffffffc20030c0 mdd ffffffffc1f88000 745472 /tmp/crash-anaysis.VK4uA/modules/mdd.ko ffffffffc214d900 mdt ffffffffc203f000 1654784 /tmp/crash-anaysis.VK4uA/modules/mdt.ko ffffffffc227f680 lod ffffffffc21d4000 1056768 /tmp/crash-anaysis.VK4uA/modules/lod.ko ffffffffc2345e40 ofd ffffffffc22d7000 688128 /tmp/crash-anaysis.VK4uA/modules/ofd.ko ffffffffc23dbf80 osp ffffffffc2380000 573440 /tmp/crash-anaysis.VK4uA/modules/osp.ko ffffffffc2542580 lustre ffffffffc240d000 1912832 /tmp/crash-anaysis.VK4uA/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, 0xffff8fd243dd0b08) 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 223 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, 0xffff8fd2588b4c28) 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 220 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, 0xffff8fd246981ec8) 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 240 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, 0xffff8fd248c72948) 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 262 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 945 total debug pages from 4 CPUs to /tmp/crash-anaysis.VK4uA/lustre.bin