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.PPQA3/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68883/testresults/sanity-compr-special1-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg431-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 13:29:29 EDT 2026 UPTIME: 00:06:47 LOAD AVERAGE: 1.39, 1.26, 0.65 TASKS: 348 NODENAME: oleg431-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: 6519 COMMAND: "dp_sync_taskq" TASK: ffff9f08474427c0 [THREAD_INFO: ffff9f08474427c0] CPU: 2 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 ata_generic 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 serio_raw module mod: cannot find or load object file for ata_piix module mod: cannot find or load object file for crct10dif_pclmul 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 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 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 ffffffffc0717740 libcfs ffffffffc06f7000 225280 /tmp/crash-anaysis.PPQA3/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc11393c0 lnet ffffffffc105e000 1490944 /tmp/crash-anaysis.PPQA3/modules/lnet.ko ffffffffc11f4900 ksocklnd ffffffffc11cb000 270336 /tmp/crash-anaysis.PPQA3/modules/ksocklnd.ko ffffffffc13550c0 obdclass ffffffffc120e000 4415488 /tmp/crash-anaysis.PPQA3/modules/obdclass.ko ffffffffc18d10c0 ptlrpc ffffffffc1645000 4173824 /tmp/crash-anaysis.PPQA3/modules/ptlrpc.ko ffffffffc1a8f880 ptlrpc_gss ffffffffc1a41000 524288 /tmp/crash-anaysis.PPQA3/modules/ptlrpc_gss.ko ffffffffc1ad4c80 fld ffffffffc1ac2000 126976 /tmp/crash-anaysis.PPQA3/modules/fld.ko ffffffffc1af4ac0 fid ffffffffc1ae2000 126976 /tmp/crash-anaysis.PPQA3/modules/fid.ko ffffffffc1b14740 ec ffffffffc1b02000 81920 /tmp/crash-anaysis.PPQA3/modules/ec.ko ffffffffc1b54080 lmv ffffffffc1b17000 372736 /tmp/crash-anaysis.PPQA3/modules/lmv.ko ffffffffc1bf5480 osc ffffffffc1b73000 790528 /tmp/crash-anaysis.PPQA3/modules/osc.ko ffffffffc1c8db00 lov ffffffffc1c35000 552960 /tmp/crash-anaysis.PPQA3/modules/lov.ko ffffffffc1d07b80 mdc ffffffffc1cbd000 466944 /tmp/crash-anaysis.PPQA3/modules/mdc.ko ffffffffc1d4c000 mgc ffffffffc1d30000 184320 /tmp/crash-anaysis.PPQA3/modules/mgc.ko ffffffffc1d7f5c0 obdecho ffffffffc1d5e000 225280 /tmp/crash-anaysis.PPQA3/modules/obdecho.ko ffffffffc1e50340 lfsck ffffffffc1d96000 1081344 /tmp/crash-anaysis.PPQA3/modules/lfsck.ko ffffffffc1f1f240 lquota ffffffffc1e9f000 786432 /tmp/crash-anaysis.PPQA3/modules/lquota.ko ffffffffc1fcbb80 osd_zfs ffffffffc1f60000 659456 /tmp/crash-anaysis.PPQA3/modules/osd_zfs.ko ffffffffc2065400 mgs ffffffffc2002000 626688 /tmp/crash-anaysis.PPQA3/modules/mgs.ko ffffffffc21170c0 mdd ffffffffc209c000 745472 /tmp/crash-anaysis.PPQA3/modules/mdd.ko ffffffffc2261900 mdt ffffffffc2153000 1654784 /tmp/crash-anaysis.PPQA3/modules/mdt.ko ffffffffc2395900 lod ffffffffc22e8000 1064960 /tmp/crash-anaysis.PPQA3/modules/lod.ko ffffffffc245be40 ofd ffffffffc23ed000 688128 /tmp/crash-anaysis.PPQA3/modules/ofd.ko ffffffffc24f1f80 osp ffffffffc2496000 573440 /tmp/crash-anaysis.PPQA3/modules/osp.ko ffffffffc2659780 lustre ffffffffc2523000 1925120 /tmp/crash-anaysis.PPQA3/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, 0xffff9f08595d6f48) 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 157 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, 0xffff9f0843434d28) 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 124 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, 0xffff9f08434a7068) 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 142 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, 0xffff9f08531e4828) 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 109 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 532 total debug pages from 4 CPUs to /tmp/crash-anaysis.PPQA3/lustre.bin