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.KZIgn/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68898/testresults/sanity-compr-special2-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg443-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 10:57:59 EDT 2026 UPTIME: 00:05:54 LOAD AVERAGE: 1.91, 1.35, 0.64 TASKS: 344 NODENAME: oleg443-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: 6487 COMMAND: "dp_sync_taskq" TASK: ffff8ba23b0a4f80 [THREAD_INFO: ffff8ba23b0a4f80] 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_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 intel_rapl_msr module mod: cannot find or load object file for crc32_pclmul 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 crc32c_intel module mod: cannot find or load object file for pcspkr module mod: cannot find or load object file for rapl 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 squashfs 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 sb_edac 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 ffffffffc0483740 libcfs ffffffffc0463000 225280 /tmp/crash-anaysis.KZIgn/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0ea53c0 lnet ffffffffc0dca000 1490944 /tmp/crash-anaysis.KZIgn/modules/lnet.ko ffffffffc0f60900 ksocklnd ffffffffc0f37000 270336 /tmp/crash-anaysis.KZIgn/modules/ksocklnd.ko ffffffffc10c10c0 obdclass ffffffffc0f7a000 4415488 /tmp/crash-anaysis.KZIgn/modules/obdclass.ko ffffffffc163d0c0 ptlrpc ffffffffc13b1000 4173824 /tmp/crash-anaysis.KZIgn/modules/ptlrpc.ko ffffffffc17fb880 ptlrpc_gss ffffffffc17ad000 524288 /tmp/crash-anaysis.KZIgn/modules/ptlrpc_gss.ko ffffffffc1840c80 fld ffffffffc182e000 126976 /tmp/crash-anaysis.KZIgn/modules/fld.ko ffffffffc1860ac0 fid ffffffffc184e000 126976 /tmp/crash-anaysis.KZIgn/modules/fid.ko ffffffffc1880740 ec ffffffffc186e000 81920 /tmp/crash-anaysis.KZIgn/modules/ec.ko ffffffffc18c0080 lmv ffffffffc1883000 372736 /tmp/crash-anaysis.KZIgn/modules/lmv.ko ffffffffc1961380 osc ffffffffc18df000 790528 /tmp/crash-anaysis.KZIgn/modules/osc.ko ffffffffc19f9a00 lov ffffffffc19a1000 552960 /tmp/crash-anaysis.KZIgn/modules/lov.ko ffffffffc1a73b80 mdc ffffffffc1a29000 466944 /tmp/crash-anaysis.KZIgn/modules/mdc.ko ffffffffc1ab8000 mgc ffffffffc1a9c000 184320 /tmp/crash-anaysis.KZIgn/modules/mgc.ko ffffffffc1aeb5c0 obdecho ffffffffc1aca000 225280 /tmp/crash-anaysis.KZIgn/modules/obdecho.ko ffffffffc1bbc340 lfsck ffffffffc1b02000 1081344 /tmp/crash-anaysis.KZIgn/modules/lfsck.ko ffffffffc1c8b240 lquota ffffffffc1c0b000 786432 /tmp/crash-anaysis.KZIgn/modules/lquota.ko ffffffffc1d37b80 osd_zfs ffffffffc1ccc000 659456 /tmp/crash-anaysis.KZIgn/modules/osd_zfs.ko ffffffffc1dd1400 mgs ffffffffc1d6e000 626688 /tmp/crash-anaysis.KZIgn/modules/mgs.ko ffffffffc1e83080 mdd ffffffffc1e08000 745472 /tmp/crash-anaysis.KZIgn/modules/mdd.ko ffffffffc1fcd900 mdt ffffffffc1ebf000 1654784 /tmp/crash-anaysis.KZIgn/modules/mdt.ko ffffffffc20ff540 lod ffffffffc2054000 1056768 /tmp/crash-anaysis.KZIgn/modules/lod.ko ffffffffc21c5e00 ofd ffffffffc2157000 688128 /tmp/crash-anaysis.KZIgn/modules/ofd.ko ffffffffc225bf80 osp ffffffffc2200000 573440 /tmp/crash-anaysis.KZIgn/modules/osp.ko ffffffffc23c14c0 lustre ffffffffc228d000 1908736 /tmp/crash-anaysis.KZIgn/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, 0xffff8ba21856d548) 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 127 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, 0xffff8ba21161e448) 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 129 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, 0xffff8ba2180195e8) 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 137 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, 0xffff8ba22c59a7e8) 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 118 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 511 total debug pages from 4 CPUs to /tmp/crash-anaysis.KZIgn/lustre.bin