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.wtwFs/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68908/testresults/sanity-compr-special10-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg633-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 09:26:37 EDT 2026 UPTIME: 00:06:07 LOAD AVERAGE: 1.74, 1.53, 0.77 TASKS: 348 NODENAME: oleg633-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: 6490 COMMAND: "dp_sync_taskq" TASK: ffff8d297add4f80 [THREAD_INFO: ffff8d297add4f80] 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 pcspkr 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 rapl module mod: cannot find or load object file for ata_piix module mod: cannot find or load object file for dns_resolver 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 intel_rapl_msr 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 i2c_piix4 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 sb_edac 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 ffffffffc04e9740 libcfs ffffffffc04c9000 225280 /tmp/crash-anaysis.wtwFs/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0f0b3c0 lnet ffffffffc0e30000 1490944 /tmp/crash-anaysis.wtwFs/modules/lnet.ko ffffffffc0fc6900 ksocklnd ffffffffc0f9d000 270336 /tmp/crash-anaysis.wtwFs/modules/ksocklnd.ko ffffffffc1125a80 obdclass ffffffffc0fe0000 4403200 /tmp/crash-anaysis.wtwFs/modules/obdclass.ko ffffffffc16a00c0 ptlrpc ffffffffc1414000 4173824 /tmp/crash-anaysis.wtwFs/modules/ptlrpc.ko ffffffffc185e880 ptlrpc_gss ffffffffc1810000 524288 /tmp/crash-anaysis.wtwFs/modules/ptlrpc_gss.ko ffffffffc18a3c80 fld ffffffffc1891000 126976 /tmp/crash-anaysis.wtwFs/modules/fld.ko ffffffffc18c3ac0 fid ffffffffc18b1000 126976 /tmp/crash-anaysis.wtwFs/modules/fid.ko ffffffffc18e3740 ec ffffffffc18d1000 81920 /tmp/crash-anaysis.wtwFs/modules/ec.ko ffffffffc1923080 lmv ffffffffc18e6000 372736 /tmp/crash-anaysis.wtwFs/modules/lmv.ko ffffffffc19c4200 osc ffffffffc1942000 790528 /tmp/crash-anaysis.wtwFs/modules/osc.ko ffffffffc1a5ca00 lov ffffffffc1a04000 552960 /tmp/crash-anaysis.wtwFs/modules/lov.ko ffffffffc1ad6b80 mdc ffffffffc1a8c000 466944 /tmp/crash-anaysis.wtwFs/modules/mdc.ko ffffffffc1b1b000 mgc ffffffffc1aff000 184320 /tmp/crash-anaysis.wtwFs/modules/mgc.ko ffffffffc1b4e5c0 obdecho ffffffffc1b2d000 225280 /tmp/crash-anaysis.wtwFs/modules/obdecho.ko ffffffffc1c1f340 lfsck ffffffffc1b65000 1081344 /tmp/crash-anaysis.wtwFs/modules/lfsck.ko ffffffffc1cee240 lquota ffffffffc1c6e000 786432 /tmp/crash-anaysis.wtwFs/modules/lquota.ko ffffffffc1d99ac0 osd_zfs ffffffffc1d2f000 655360 /tmp/crash-anaysis.wtwFs/modules/osd_zfs.ko ffffffffc1e33400 mgs ffffffffc1dd0000 626688 /tmp/crash-anaysis.wtwFs/modules/mgs.ko ffffffffc1ee5080 mdd ffffffffc1e6a000 745472 /tmp/crash-anaysis.wtwFs/modules/mdd.ko ffffffffc202f940 mdt ffffffffc1f21000 1654784 /tmp/crash-anaysis.wtwFs/modules/mdt.ko ffffffffc2161480 lod ffffffffc20b6000 1052672 /tmp/crash-anaysis.wtwFs/modules/lod.ko ffffffffc2226ac0 ofd ffffffffc21b8000 684032 /tmp/crash-anaysis.wtwFs/modules/ofd.ko ffffffffc22bbf80 osp ffffffffc2260000 573440 /tmp/crash-anaysis.wtwFs/modules/osp.ko ffffffffc24216c0 lustre ffffffffc22ed000 1912832 /tmp/crash-anaysis.wtwFs/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, 0xffff8d296484f388) 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 132 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, 0xffff8d2944fc1ba8) 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 167 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, 0xffff8d2944fd4aa8) 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 125 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, 0xffff8d2942f96a28) 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 119 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 543 total debug pages from 4 CPUs to /tmp/crash-anaysis.wtwFs/lustre.bin