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.QnaWw/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68890/testresults/sanity-compr-special3-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg345-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 13:22:01 EDT 2026 UPTIME: 00:03:51 LOAD AVERAGE: 0.75, 0.70, 0.32 TASKS: 364 NODENAME: oleg345-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: 6481 COMMAND: "dp_sync_taskq" TASK: ffff919503648000 [THREAD_INFO: ffff919503648000] 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_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 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 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 crc32_pclmul module mod: cannot find or load object file for squashfs 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 rapl 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 ffffffffc063ec80 fld ffffffffc062c000 126976 /tmp/crash-anaysis.QnaWw/modules/fld.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0fa5740 libcfs ffffffffc0f85000 225280 /tmp/crash-anaysis.QnaWw/modules/libcfs.ko ffffffffc10983c0 lnet ffffffffc0fbd000 1490944 /tmp/crash-anaysis.QnaWw/modules/lnet.ko ffffffffc1153900 ksocklnd ffffffffc112a000 270336 /tmp/crash-anaysis.QnaWw/modules/ksocklnd.ko ffffffffc12b40c0 obdclass ffffffffc116d000 4415488 /tmp/crash-anaysis.QnaWw/modules/obdclass.ko ffffffffc18300c0 ptlrpc ffffffffc15a4000 4173824 /tmp/crash-anaysis.QnaWw/modules/ptlrpc.ko ffffffffc19ee880 ptlrpc_gss ffffffffc19a0000 524288 /tmp/crash-anaysis.QnaWw/modules/ptlrpc_gss.ko ffffffffc1a33ac0 fid ffffffffc1a21000 126976 /tmp/crash-anaysis.QnaWw/modules/fid.ko ffffffffc1a53740 ec ffffffffc1a41000 81920 /tmp/crash-anaysis.QnaWw/modules/ec.ko ffffffffc1a93080 lmv ffffffffc1a56000 372736 /tmp/crash-anaysis.QnaWw/modules/lmv.ko ffffffffc1b34380 osc ffffffffc1ab2000 790528 /tmp/crash-anaysis.QnaWw/modules/osc.ko ffffffffc1bcca00 lov ffffffffc1b74000 552960 /tmp/crash-anaysis.QnaWw/modules/lov.ko ffffffffc1c46b80 mdc ffffffffc1bfc000 466944 /tmp/crash-anaysis.QnaWw/modules/mdc.ko ffffffffc1c8b000 mgc ffffffffc1c6f000 184320 /tmp/crash-anaysis.QnaWw/modules/mgc.ko ffffffffc1cbe5c0 obdecho ffffffffc1c9d000 225280 /tmp/crash-anaysis.QnaWw/modules/obdecho.ko ffffffffc1d8f340 lfsck ffffffffc1cd5000 1081344 /tmp/crash-anaysis.QnaWw/modules/lfsck.ko ffffffffc1e5e240 lquota ffffffffc1dde000 786432 /tmp/crash-anaysis.QnaWw/modules/lquota.ko ffffffffc1f0ab80 osd_zfs ffffffffc1e9f000 659456 /tmp/crash-anaysis.QnaWw/modules/osd_zfs.ko ffffffffc1fa4400 mgs ffffffffc1f41000 626688 /tmp/crash-anaysis.QnaWw/modules/mgs.ko ffffffffc2056080 mdd ffffffffc1fdb000 745472 /tmp/crash-anaysis.QnaWw/modules/mdd.ko ffffffffc21a0900 mdt ffffffffc2092000 1654784 /tmp/crash-anaysis.QnaWw/modules/mdt.ko ffffffffc22d2540 lod ffffffffc2227000 1056768 /tmp/crash-anaysis.QnaWw/modules/lod.ko ffffffffc2398e40 ofd ffffffffc232a000 688128 /tmp/crash-anaysis.QnaWw/modules/ofd.ko ffffffffc242ef80 osp ffffffffc23d3000 573440 /tmp/crash-anaysis.QnaWw/modules/osp.ko ffffffffc25944c0 lustre ffffffffc2460000 1908736 /tmp/crash-anaysis.QnaWw/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, 0xffff91950b0337a8) 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 105 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, 0xffff9195136c9648) 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 110 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, 0xffff919507ceff08) 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 127 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, 0xffff919512a0e408) 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 105 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 447 total debug pages from 4 CPUs to /tmp/crash-anaysis.QnaWw/lustre.bin