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.bUFwb/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68907/testresults/sanity-compr-special1-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg308-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 10:46:58 EDT 2026 UPTIME: 00:05:23 LOAD AVERAGE: 1.10, 1.04, 0.50 TASKS: 356 NODENAME: oleg308-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: 6486 COMMAND: "dp_sync_taskq" TASK: ffff93648667a7c0 [THREAD_INFO: ffff93648667a7c0] 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 intel_rapl_msr module mod: cannot find or load object file for serio_raw 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 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 sb_edac module mod: cannot find or load object file for dns_resolver module mod: cannot find or load object file for rapl module mod: cannot find or load object file for rpcsec_gss_krb5 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 ffffffffc0661740 libcfs ffffffffc0641000 225280 /tmp/crash-anaysis.bUFwb/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc10833c0 lnet ffffffffc0fa8000 1490944 /tmp/crash-anaysis.bUFwb/modules/lnet.ko ffffffffc113e900 ksocklnd ffffffffc1115000 270336 /tmp/crash-anaysis.bUFwb/modules/ksocklnd.ko ffffffffc129ef80 obdclass ffffffffc1158000 4415488 /tmp/crash-anaysis.bUFwb/modules/obdclass.ko ffffffffc181b0c0 ptlrpc ffffffffc158f000 4173824 /tmp/crash-anaysis.bUFwb/modules/ptlrpc.ko ffffffffc19d9880 ptlrpc_gss ffffffffc198b000 524288 /tmp/crash-anaysis.bUFwb/modules/ptlrpc_gss.ko ffffffffc1a1ec80 fld ffffffffc1a0c000 126976 /tmp/crash-anaysis.bUFwb/modules/fld.ko ffffffffc1a3eac0 fid ffffffffc1a2c000 126976 /tmp/crash-anaysis.bUFwb/modules/fid.ko ffffffffc1a5e740 ec ffffffffc1a4c000 81920 /tmp/crash-anaysis.bUFwb/modules/ec.ko ffffffffc1a9e080 lmv ffffffffc1a61000 372736 /tmp/crash-anaysis.bUFwb/modules/lmv.ko ffffffffc1b3f200 osc ffffffffc1abd000 790528 /tmp/crash-anaysis.bUFwb/modules/osc.ko ffffffffc1bd7a00 lov ffffffffc1b7f000 552960 /tmp/crash-anaysis.bUFwb/modules/lov.ko ffffffffc1c51b80 mdc ffffffffc1c07000 466944 /tmp/crash-anaysis.bUFwb/modules/mdc.ko ffffffffc1c96000 mgc ffffffffc1c7a000 184320 /tmp/crash-anaysis.bUFwb/modules/mgc.ko ffffffffc1cc95c0 obdecho ffffffffc1ca8000 225280 /tmp/crash-anaysis.bUFwb/modules/obdecho.ko ffffffffc1d9a340 lfsck ffffffffc1ce0000 1081344 /tmp/crash-anaysis.bUFwb/modules/lfsck.ko ffffffffc1e69240 lquota ffffffffc1de9000 786432 /tmp/crash-anaysis.bUFwb/modules/lquota.ko ffffffffc1f14ac0 osd_zfs ffffffffc1eaa000 655360 /tmp/crash-anaysis.bUFwb/modules/osd_zfs.ko ffffffffc1fae400 mgs ffffffffc1f4b000 626688 /tmp/crash-anaysis.bUFwb/modules/mgs.ko ffffffffc2060080 mdd ffffffffc1fe5000 745472 /tmp/crash-anaysis.bUFwb/modules/mdd.ko ffffffffc21aa940 mdt ffffffffc209c000 1654784 /tmp/crash-anaysis.bUFwb/modules/mdt.ko ffffffffc22dc480 lod ffffffffc2231000 1052672 /tmp/crash-anaysis.bUFwb/modules/lod.ko ffffffffc23a2e40 ofd ffffffffc2333000 692224 /tmp/crash-anaysis.bUFwb/modules/ofd.ko ffffffffc2438f80 osp ffffffffc23dd000 573440 /tmp/crash-anaysis.bUFwb/modules/osp.ko ffffffffc259e6c0 lustre ffffffffc246a000 1912832 /tmp/crash-anaysis.bUFwb/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, 0xffff936490866e88) 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 108 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, 0xffff93649487d688) 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 161 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, 0xffff9364abdcfb68) 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 94 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, 0xffff93648b4722a8) 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 468 total debug pages from 4 CPUs to /tmp/crash-anaysis.bUFwb/lustre.bin