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.x5skE/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68890/testresults/sanity-compr-special7-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg412-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 13:23:39 EDT 2026 UPTIME: 00:07:17 LOAD AVERAGE: 1.13, 0.99, 0.51 TASKS: 406 NODENAME: oleg412-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: 7902 COMMAND: "dp_sync_taskq" TASK: ffff8cdf7a2c8000 [THREAD_INFO: ffff8cdf7a2c8000] 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_mirror module mod: cannot find or load object file for intel_rapl_msr 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 crc32c_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 ghash_clmulni_intel module mod: cannot find or load object file for serio_raw 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 ata_piix 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 sb_edac module mod: cannot find or load object file for intel_rapl_common 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 mod: cannot find or load object file for rpcsec_gss_krb5 module MODULE NAME BASE SIZE OBJECT FILE ffffffffc0715740 libcfs ffffffffc06f5000 225280 /tmp/crash-anaysis.x5skE/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc11373c0 lnet ffffffffc105c000 1490944 /tmp/crash-anaysis.x5skE/modules/lnet.ko ffffffffc11f2900 ksocklnd ffffffffc11c9000 270336 /tmp/crash-anaysis.x5skE/modules/ksocklnd.ko ffffffffc13530c0 obdclass ffffffffc120c000 4415488 /tmp/crash-anaysis.x5skE/modules/obdclass.ko ffffffffc18cf0c0 ptlrpc ffffffffc1643000 4173824 /tmp/crash-anaysis.x5skE/modules/ptlrpc.ko ffffffffc1a8d880 ptlrpc_gss ffffffffc1a3f000 524288 /tmp/crash-anaysis.x5skE/modules/ptlrpc_gss.ko ffffffffc1ad2c80 fld ffffffffc1ac0000 126976 /tmp/crash-anaysis.x5skE/modules/fld.ko ffffffffc1af2ac0 fid ffffffffc1ae0000 126976 /tmp/crash-anaysis.x5skE/modules/fid.ko ffffffffc1b12740 ec ffffffffc1b00000 81920 /tmp/crash-anaysis.x5skE/modules/ec.ko ffffffffc1b52080 lmv ffffffffc1b15000 372736 /tmp/crash-anaysis.x5skE/modules/lmv.ko ffffffffc1bf3380 osc ffffffffc1b71000 790528 /tmp/crash-anaysis.x5skE/modules/osc.ko ffffffffc1c8ba00 lov ffffffffc1c33000 552960 /tmp/crash-anaysis.x5skE/modules/lov.ko ffffffffc1d05b80 mdc ffffffffc1cbb000 466944 /tmp/crash-anaysis.x5skE/modules/mdc.ko ffffffffc1d4a000 mgc ffffffffc1d2e000 184320 /tmp/crash-anaysis.x5skE/modules/mgc.ko ffffffffc1d7d5c0 obdecho ffffffffc1d5c000 225280 /tmp/crash-anaysis.x5skE/modules/obdecho.ko ffffffffc1e4e340 lfsck ffffffffc1d94000 1081344 /tmp/crash-anaysis.x5skE/modules/lfsck.ko ffffffffc1f1d240 lquota ffffffffc1e9d000 786432 /tmp/crash-anaysis.x5skE/modules/lquota.ko ffffffffc1fc9b80 osd_zfs ffffffffc1f5e000 659456 /tmp/crash-anaysis.x5skE/modules/osd_zfs.ko ffffffffc2063400 mgs ffffffffc2000000 626688 /tmp/crash-anaysis.x5skE/modules/mgs.ko ffffffffc2115080 mdd ffffffffc209a000 745472 /tmp/crash-anaysis.x5skE/modules/mdd.ko ffffffffc225f900 mdt ffffffffc2151000 1654784 /tmp/crash-anaysis.x5skE/modules/mdt.ko ffffffffc2391540 lod ffffffffc22e6000 1056768 /tmp/crash-anaysis.x5skE/modules/lod.ko ffffffffc2457e40 ofd ffffffffc23e9000 688128 /tmp/crash-anaysis.x5skE/modules/ofd.ko ffffffffc24edf80 osp ffffffffc2492000 573440 /tmp/crash-anaysis.x5skE/modules/osp.ko ffffffffc26534c0 lustre ffffffffc251f000 1908736 /tmp/crash-anaysis.x5skE/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, 0xffff8cdf42faba28) 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 224 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, 0xffff8cdf42e30368) 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 218 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, 0xffff8cdf44ec28a8) 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 200 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, 0xffff8cdf45786e88) 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 230 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 872 total debug pages from 4 CPUs to /tmp/crash-anaysis.x5skE/lustre.bin