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.3OVC1/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68887/testresults/sanity-compr-special6-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg339-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 13:35:30 EDT 2026 UPTIME: 00:06:26 LOAD AVERAGE: 1.58, 1.37, 0.67 TASKS: 399 NODENAME: oleg339-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: 7881 COMMAND: "dp_sync_taskq" TASK: ffff91def4dd8000 [THREAD_INFO: ffff91def4dd8000] 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 serio_raw 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 i2c_piix4 module mod: cannot find or load object file for intel_rapl_msr 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 ata_generic 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 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 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 ffffffffc06e2c80 fld ffffffffc06d0000 126976 /tmp/crash-anaysis.3OVC1/modules/fld.ko ffffffffc0702740 ec ffffffffc06f0000 81920 /tmp/crash-anaysis.3OVC1/modules/ec.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc1057740 libcfs ffffffffc1037000 225280 /tmp/crash-anaysis.3OVC1/modules/libcfs.ko ffffffffc114a3c0 lnet ffffffffc106f000 1490944 /tmp/crash-anaysis.3OVC1/modules/lnet.ko ffffffffc1205900 ksocklnd ffffffffc11dc000 270336 /tmp/crash-anaysis.3OVC1/modules/ksocklnd.ko ffffffffc13660c0 obdclass ffffffffc121f000 4415488 /tmp/crash-anaysis.3OVC1/modules/obdclass.ko ffffffffc18e20c0 ptlrpc ffffffffc1656000 4173824 /tmp/crash-anaysis.3OVC1/modules/ptlrpc.ko ffffffffc1aa0880 ptlrpc_gss ffffffffc1a52000 524288 /tmp/crash-anaysis.3OVC1/modules/ptlrpc_gss.ko ffffffffc1ae5ac0 fid ffffffffc1ad3000 126976 /tmp/crash-anaysis.3OVC1/modules/fid.ko ffffffffc1b30080 lmv ffffffffc1af3000 372736 /tmp/crash-anaysis.3OVC1/modules/lmv.ko ffffffffc1bd1440 osc ffffffffc1b4f000 790528 /tmp/crash-anaysis.3OVC1/modules/osc.ko ffffffffc1c69a80 lov ffffffffc1c11000 552960 /tmp/crash-anaysis.3OVC1/modules/lov.ko ffffffffc1ce3b80 mdc ffffffffc1c99000 466944 /tmp/crash-anaysis.3OVC1/modules/mdc.ko ffffffffc1d28000 mgc ffffffffc1d0c000 184320 /tmp/crash-anaysis.3OVC1/modules/mgc.ko ffffffffc1d5b5c0 obdecho ffffffffc1d3a000 225280 /tmp/crash-anaysis.3OVC1/modules/obdecho.ko ffffffffc1e2c340 lfsck ffffffffc1d72000 1081344 /tmp/crash-anaysis.3OVC1/modules/lfsck.ko ffffffffc1efb240 lquota ffffffffc1e7b000 786432 /tmp/crash-anaysis.3OVC1/modules/lquota.ko ffffffffc1fa7b80 osd_zfs ffffffffc1f3c000 659456 /tmp/crash-anaysis.3OVC1/modules/osd_zfs.ko ffffffffc2041400 mgs ffffffffc1fde000 626688 /tmp/crash-anaysis.3OVC1/modules/mgs.ko ffffffffc20f30c0 mdd ffffffffc2078000 745472 /tmp/crash-anaysis.3OVC1/modules/mdd.ko ffffffffc223d900 mdt ffffffffc212f000 1654784 /tmp/crash-anaysis.3OVC1/modules/mdt.ko ffffffffc236f680 lod ffffffffc22c4000 1056768 /tmp/crash-anaysis.3OVC1/modules/lod.ko ffffffffc2435e40 ofd ffffffffc23c7000 688128 /tmp/crash-anaysis.3OVC1/modules/ofd.ko ffffffffc24cbf80 osp ffffffffc2470000 573440 /tmp/crash-anaysis.3OVC1/modules/osp.ko ffffffffc2632580 lustre ffffffffc24fd000 1912832 /tmp/crash-anaysis.3OVC1/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, 0xffff91ded51844e8) 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 221 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, 0xffff91dec2b8fac8) 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 254 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, 0xffff91dedda5dcc8) 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 228 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, 0xffff91ded07c5568) 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 231 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 934 total debug pages from 4 CPUs to /tmp/crash-anaysis.3OVC1/lustre.bin