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.kNIQO/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68883/testresults/sanity-compr-special4-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg360-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 13:30:00 EDT 2026 UPTIME: 00:07:27 LOAD AVERAGE: 1.77, 1.29, 0.64 TASKS: 349 NODENAME: oleg360-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: 6520 COMMAND: "dp_sync_taskq" TASK: ffff9affb483a7c0 [THREAD_INFO: ffff9affb483a7c0] 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 ata_generic module mod: cannot find or load object file for crc32_pclmul module mod: cannot find or load object file for crct10dif_pclmul module mod: cannot find or load object file for ata_piix 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 crc32c_intel 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 dns_resolver module mod: cannot find or load object file for rpcsec_gss_krb5 module mod: cannot find or load object file for rapl 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 ffffffffc046f740 libcfs ffffffffc044f000 225280 /tmp/crash-anaysis.kNIQO/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0e8f3c0 lnet ffffffffc0db4000 1490944 /tmp/crash-anaysis.kNIQO/modules/lnet.ko ffffffffc0f4a900 ksocklnd ffffffffc0f21000 270336 /tmp/crash-anaysis.kNIQO/modules/ksocklnd.ko ffffffffc10ab0c0 obdclass ffffffffc0f64000 4415488 /tmp/crash-anaysis.kNIQO/modules/obdclass.ko ffffffffc16270c0 ptlrpc ffffffffc139b000 4173824 /tmp/crash-anaysis.kNIQO/modules/ptlrpc.ko ffffffffc17e5880 ptlrpc_gss ffffffffc1797000 524288 /tmp/crash-anaysis.kNIQO/modules/ptlrpc_gss.ko ffffffffc182ac80 fld ffffffffc1818000 126976 /tmp/crash-anaysis.kNIQO/modules/fld.ko ffffffffc184aac0 fid ffffffffc1838000 126976 /tmp/crash-anaysis.kNIQO/modules/fid.ko ffffffffc186a740 ec ffffffffc1858000 81920 /tmp/crash-anaysis.kNIQO/modules/ec.ko ffffffffc18aa080 lmv ffffffffc186d000 372736 /tmp/crash-anaysis.kNIQO/modules/lmv.ko ffffffffc194b480 osc ffffffffc18c9000 790528 /tmp/crash-anaysis.kNIQO/modules/osc.ko ffffffffc19e3b00 lov ffffffffc198b000 552960 /tmp/crash-anaysis.kNIQO/modules/lov.ko ffffffffc1a5db80 mdc ffffffffc1a13000 466944 /tmp/crash-anaysis.kNIQO/modules/mdc.ko ffffffffc1aa2000 mgc ffffffffc1a86000 184320 /tmp/crash-anaysis.kNIQO/modules/mgc.ko ffffffffc1ad55c0 obdecho ffffffffc1ab4000 225280 /tmp/crash-anaysis.kNIQO/modules/obdecho.ko ffffffffc1ba6340 lfsck ffffffffc1aec000 1081344 /tmp/crash-anaysis.kNIQO/modules/lfsck.ko ffffffffc1c75240 lquota ffffffffc1bf5000 786432 /tmp/crash-anaysis.kNIQO/modules/lquota.ko ffffffffc1d21b80 osd_zfs ffffffffc1cb6000 659456 /tmp/crash-anaysis.kNIQO/modules/osd_zfs.ko ffffffffc1dbb400 mgs ffffffffc1d58000 626688 /tmp/crash-anaysis.kNIQO/modules/mgs.ko ffffffffc1e6d0c0 mdd ffffffffc1df2000 745472 /tmp/crash-anaysis.kNIQO/modules/mdd.ko ffffffffc1fb7900 mdt ffffffffc1ea9000 1654784 /tmp/crash-anaysis.kNIQO/modules/mdt.ko ffffffffc20eb900 lod ffffffffc203e000 1064960 /tmp/crash-anaysis.kNIQO/modules/lod.ko ffffffffc21b1e40 ofd ffffffffc2143000 688128 /tmp/crash-anaysis.kNIQO/modules/ofd.ko ffffffffc2247f80 osp ffffffffc21ec000 573440 /tmp/crash-anaysis.kNIQO/modules/osp.ko ffffffffc23af780 lustre ffffffffc2279000 1925120 /tmp/crash-anaysis.kNIQO/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, 0xffff9affa01f9f08) 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 150 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, 0xffff9aff88759f48) 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 127 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, 0xffff9aff82b86088) 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 120 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, 0xffff9aff98374f28) 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 131 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 528 total debug pages from 4 CPUs to /tmp/crash-anaysis.kNIQO/lustre.bin