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.N0bbS/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68890/testresults/sanity-compr-special3-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg620-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 12:06:53 EDT 2026 UPTIME: 00:05:50 LOAD AVERAGE: 1.78, 1.40, 0.67 TASKS: 398 NODENAME: oleg620-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: 7903 COMMAND: "dp_sync_taskq" TASK: ffff8929ed99a7c0 [THREAD_INFO: ffff8929ed99a7c0] 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 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 i2c_piix4 module mod: cannot find or load object file for serio_raw module mod: cannot find or load object file for pcspkr 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 dns_resolver 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 sb_edac module mod: cannot find or load object file for intel_rapl_common 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 ffffffffc07d4c80 fld ffffffffc07c2000 126976 /tmp/crash-anaysis.N0bbS/modules/fld.ko ffffffffc07f4740 ec ffffffffc07e2000 81920 /tmp/crash-anaysis.N0bbS/modules/ec.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc1147740 libcfs ffffffffc1127000 225280 /tmp/crash-anaysis.N0bbS/modules/libcfs.ko ffffffffc123a3c0 lnet ffffffffc115f000 1490944 /tmp/crash-anaysis.N0bbS/modules/lnet.ko ffffffffc12f5900 ksocklnd ffffffffc12cc000 270336 /tmp/crash-anaysis.N0bbS/modules/ksocklnd.ko ffffffffc14560c0 obdclass ffffffffc130f000 4415488 /tmp/crash-anaysis.N0bbS/modules/obdclass.ko ffffffffc19d20c0 ptlrpc ffffffffc1746000 4173824 /tmp/crash-anaysis.N0bbS/modules/ptlrpc.ko ffffffffc1b90880 ptlrpc_gss ffffffffc1b42000 524288 /tmp/crash-anaysis.N0bbS/modules/ptlrpc_gss.ko ffffffffc1bd5ac0 fid ffffffffc1bc3000 126976 /tmp/crash-anaysis.N0bbS/modules/fid.ko ffffffffc1c20080 lmv ffffffffc1be3000 372736 /tmp/crash-anaysis.N0bbS/modules/lmv.ko ffffffffc1cc1380 osc ffffffffc1c3f000 790528 /tmp/crash-anaysis.N0bbS/modules/osc.ko ffffffffc1d59a00 lov ffffffffc1d01000 552960 /tmp/crash-anaysis.N0bbS/modules/lov.ko ffffffffc1dd3b80 mdc ffffffffc1d89000 466944 /tmp/crash-anaysis.N0bbS/modules/mdc.ko ffffffffc1e18000 mgc ffffffffc1dfc000 184320 /tmp/crash-anaysis.N0bbS/modules/mgc.ko ffffffffc1e4b5c0 obdecho ffffffffc1e2a000 225280 /tmp/crash-anaysis.N0bbS/modules/obdecho.ko ffffffffc1f1c340 lfsck ffffffffc1e62000 1081344 /tmp/crash-anaysis.N0bbS/modules/lfsck.ko ffffffffc1feb240 lquota ffffffffc1f6b000 786432 /tmp/crash-anaysis.N0bbS/modules/lquota.ko ffffffffc2097b80 osd_zfs ffffffffc202c000 659456 /tmp/crash-anaysis.N0bbS/modules/osd_zfs.ko ffffffffc2131400 mgs ffffffffc20ce000 626688 /tmp/crash-anaysis.N0bbS/modules/mgs.ko ffffffffc21e3080 mdd ffffffffc2168000 745472 /tmp/crash-anaysis.N0bbS/modules/mdd.ko ffffffffc232d900 mdt ffffffffc221f000 1654784 /tmp/crash-anaysis.N0bbS/modules/mdt.ko ffffffffc245f540 lod ffffffffc23b4000 1056768 /tmp/crash-anaysis.N0bbS/modules/lod.ko ffffffffc2525e40 ofd ffffffffc24b7000 688128 /tmp/crash-anaysis.N0bbS/modules/ofd.ko ffffffffc25bbf80 osp ffffffffc2560000 573440 /tmp/crash-anaysis.N0bbS/modules/osp.ko ffffffffc27214c0 lustre ffffffffc25ed000 1908736 /tmp/crash-anaysis.N0bbS/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, 0xffff8929c4cb3c28) 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 207 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, 0xffff8929c4cae9c8) 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 192 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, 0xffff8929c64cde08) 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 233 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, 0xffff8929d1dba728) 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 190 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 822 total debug pages from 4 CPUs to /tmp/crash-anaysis.N0bbS/lustre.bin