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.K6LNs/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68907/testresults/sanity-compr-special7-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg201-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 10:45:53 EDT 2026 UPTIME: 00:06:14 LOAD AVERAGE: 2.03, 1.44, 0.70 TASKS: 399 NODENAME: oleg201-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: 7901 COMMAND: "dp_sync_taskq" TASK: ffff91fdb5d38000 [THREAD_INFO: ffff91fdb5d38000] CPU: 3 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 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 ghash_clmulni_intel module mod: cannot find or load object file for crc32_pclmul module mod: cannot find or load object file for ata_generic 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 intel_rapl_msr 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 serio_raw module mod: cannot find or load object file for i2c_piix4 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 rpcsec_gss_krb5 module mod: cannot find or load object file for sb_edac module mod: cannot find or load object file for rapl 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 ffffffffc0741c80 fld ffffffffc072f000 126976 /tmp/crash-anaysis.K6LNs/modules/fld.ko ffffffffc0761740 ec ffffffffc074f000 81920 /tmp/crash-anaysis.K6LNs/modules/ec.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc10b4740 libcfs ffffffffc1094000 225280 /tmp/crash-anaysis.K6LNs/modules/libcfs.ko ffffffffc11a73c0 lnet ffffffffc10cc000 1490944 /tmp/crash-anaysis.K6LNs/modules/lnet.ko ffffffffc1262900 ksocklnd ffffffffc1239000 270336 /tmp/crash-anaysis.K6LNs/modules/ksocklnd.ko ffffffffc13c2f80 obdclass ffffffffc127c000 4415488 /tmp/crash-anaysis.K6LNs/modules/obdclass.ko ffffffffc193f0c0 ptlrpc ffffffffc16b3000 4173824 /tmp/crash-anaysis.K6LNs/modules/ptlrpc.ko ffffffffc1afd880 ptlrpc_gss ffffffffc1aaf000 524288 /tmp/crash-anaysis.K6LNs/modules/ptlrpc_gss.ko ffffffffc1b42ac0 fid ffffffffc1b30000 126976 /tmp/crash-anaysis.K6LNs/modules/fid.ko ffffffffc1b8d080 lmv ffffffffc1b50000 372736 /tmp/crash-anaysis.K6LNs/modules/lmv.ko ffffffffc1c2e200 osc ffffffffc1bac000 790528 /tmp/crash-anaysis.K6LNs/modules/osc.ko ffffffffc1cc6a00 lov ffffffffc1c6e000 552960 /tmp/crash-anaysis.K6LNs/modules/lov.ko ffffffffc1d40b80 mdc ffffffffc1cf6000 466944 /tmp/crash-anaysis.K6LNs/modules/mdc.ko ffffffffc1d85000 mgc ffffffffc1d69000 184320 /tmp/crash-anaysis.K6LNs/modules/mgc.ko ffffffffc1db85c0 obdecho ffffffffc1d97000 225280 /tmp/crash-anaysis.K6LNs/modules/obdecho.ko ffffffffc1e89340 lfsck ffffffffc1dcf000 1081344 /tmp/crash-anaysis.K6LNs/modules/lfsck.ko ffffffffc1f58240 lquota ffffffffc1ed8000 786432 /tmp/crash-anaysis.K6LNs/modules/lquota.ko ffffffffc2003ac0 osd_zfs ffffffffc1f99000 655360 /tmp/crash-anaysis.K6LNs/modules/osd_zfs.ko ffffffffc209d400 mgs ffffffffc203a000 626688 /tmp/crash-anaysis.K6LNs/modules/mgs.ko ffffffffc214f080 mdd ffffffffc20d4000 745472 /tmp/crash-anaysis.K6LNs/modules/mdd.ko ffffffffc2299940 mdt ffffffffc218b000 1654784 /tmp/crash-anaysis.K6LNs/modules/mdt.ko ffffffffc23cb480 lod ffffffffc2320000 1052672 /tmp/crash-anaysis.K6LNs/modules/lod.ko ffffffffc2491e40 ofd ffffffffc2422000 692224 /tmp/crash-anaysis.K6LNs/modules/ofd.ko ffffffffc2527f80 osp ffffffffc24cc000 573440 /tmp/crash-anaysis.K6LNs/modules/osp.ko ffffffffc268d6c0 lustre ffffffffc2559000 1912832 /tmp/crash-anaysis.K6LNs/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, 0xffff91fd90220e28) 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 166 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, 0xffff91fd9129daa8) 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 246 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, 0xffff91fd83736a28) 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 202 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, 0xffff91fd91fbef48) 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 215 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 829 total debug pages from 4 CPUs to /tmp/crash-anaysis.K6LNs/lustre.bin