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.q21q8/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68899/testresults/sanity-compr-special1-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg456-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 11:04:17 EDT 2026 UPTIME: 00:06:23 LOAD AVERAGE: 1.23, 1.14, 0.57 TASKS: 401 NODENAME: oleg456-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: 7905 COMMAND: "dp_sync_taskq" TASK: ffff92bdc835cf80 [THREAD_INFO: ffff92bdc835cf80] 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_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 serio_raw module mod: cannot find or load object file for ghash_clmulni_intel module mod: cannot find or load object file for crct10dif_pclmul 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 rapl 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 pcspkr module mod: cannot find or load object file for intel_rapl_msr 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 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 nfsv4 module mod: cannot find or load object file for auth_rpcgss module MODULE NAME BASE SIZE OBJECT FILE ffffffffc05acc80 fld ffffffffc059a000 126976 /tmp/crash-anaysis.q21q8/modules/fld.ko ffffffffc05cc740 ec ffffffffc05ba000 81920 /tmp/crash-anaysis.q21q8/modules/ec.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0f1f740 libcfs ffffffffc0eff000 225280 /tmp/crash-anaysis.q21q8/modules/libcfs.ko ffffffffc10123c0 lnet ffffffffc0f37000 1490944 /tmp/crash-anaysis.q21q8/modules/lnet.ko ffffffffc10cd900 ksocklnd ffffffffc10a4000 270336 /tmp/crash-anaysis.q21q8/modules/ksocklnd.ko ffffffffc122e0c0 obdclass ffffffffc10e7000 4415488 /tmp/crash-anaysis.q21q8/modules/obdclass.ko ffffffffc17aa0c0 ptlrpc ffffffffc151e000 4173824 /tmp/crash-anaysis.q21q8/modules/ptlrpc.ko ffffffffc1968880 ptlrpc_gss ffffffffc191a000 524288 /tmp/crash-anaysis.q21q8/modules/ptlrpc_gss.ko ffffffffc19adac0 fid ffffffffc199b000 126976 /tmp/crash-anaysis.q21q8/modules/fid.ko ffffffffc19f8080 lmv ffffffffc19bb000 372736 /tmp/crash-anaysis.q21q8/modules/lmv.ko ffffffffc1a99340 osc ffffffffc1a17000 790528 /tmp/crash-anaysis.q21q8/modules/osc.ko ffffffffc1b31a00 lov ffffffffc1ad9000 552960 /tmp/crash-anaysis.q21q8/modules/lov.ko ffffffffc1babb80 mdc ffffffffc1b61000 466944 /tmp/crash-anaysis.q21q8/modules/mdc.ko ffffffffc1bf0000 mgc ffffffffc1bd4000 184320 /tmp/crash-anaysis.q21q8/modules/mgc.ko ffffffffc1c235c0 obdecho ffffffffc1c02000 225280 /tmp/crash-anaysis.q21q8/modules/obdecho.ko ffffffffc1cf4340 lfsck ffffffffc1c3a000 1081344 /tmp/crash-anaysis.q21q8/modules/lfsck.ko ffffffffc1dc3240 lquota ffffffffc1d43000 786432 /tmp/crash-anaysis.q21q8/modules/lquota.ko ffffffffc1e6fb80 osd_zfs ffffffffc1e04000 659456 /tmp/crash-anaysis.q21q8/modules/osd_zfs.ko ffffffffc1f09400 mgs ffffffffc1ea6000 626688 /tmp/crash-anaysis.q21q8/modules/mgs.ko ffffffffc1fbb080 mdd ffffffffc1f40000 745472 /tmp/crash-anaysis.q21q8/modules/mdd.ko ffffffffc2105900 mdt ffffffffc1ff7000 1654784 /tmp/crash-anaysis.q21q8/modules/mdt.ko ffffffffc2237540 lod ffffffffc218c000 1056768 /tmp/crash-anaysis.q21q8/modules/lod.ko ffffffffc22fde00 ofd ffffffffc228f000 688128 /tmp/crash-anaysis.q21q8/modules/ofd.ko ffffffffc2393f80 osp ffffffffc2338000 573440 /tmp/crash-anaysis.q21q8/modules/osp.ko ffffffffc24f94c0 lustre ffffffffc23c5000 1908736 /tmp/crash-anaysis.q21q8/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, 0xffff92bdd1e3bb48) 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 230 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, 0xffff92bdd0381948) 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 216 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, 0xffff92bde01730c8) 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 198 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, 0xffff92bdc2aff588) 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 213 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 857 total debug pages from 4 CPUs to /tmp/crash-anaysis.q21q8/lustre.bin