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.il8DC/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68907/testresults/sanity-compr-special8-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg243-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 10:46:32 EDT 2026 UPTIME: 00:06:21 LOAD AVERAGE: 1.89, 1.65, 0.80 TASKS: 347 NODENAME: oleg243-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: 6505 COMMAND: "dp_sync_taskq" TASK: ffff9c5389a4cf80 [THREAD_INFO: ffff9c5389a4cf80] CPU: 1 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 crc32c_intel module mod: cannot find or load object file for ata_generic module mod: cannot find or load object file for crc32_pclmul module mod: cannot find or load object file for pcspkr module mod: cannot find or load object file for rapl 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 intel_rapl_msr module mod: cannot find or load object file for ghash_clmulni_intel module mod: cannot find or load object file for crct10dif_pclmul module mod: cannot find or load object file for intel_rapl_common module mod: cannot find or load object file for dns_resolver module mod: cannot find or load object file for ata_piix 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 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 ffffffffc063d740 libcfs ffffffffc061d000 225280 /tmp/crash-anaysis.il8DC/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc105f3c0 lnet ffffffffc0f84000 1490944 /tmp/crash-anaysis.il8DC/modules/lnet.ko ffffffffc111a900 ksocklnd ffffffffc10f1000 270336 /tmp/crash-anaysis.il8DC/modules/ksocklnd.ko ffffffffc127af80 obdclass ffffffffc1134000 4415488 /tmp/crash-anaysis.il8DC/modules/obdclass.ko ffffffffc17f70c0 ptlrpc ffffffffc156b000 4173824 /tmp/crash-anaysis.il8DC/modules/ptlrpc.ko ffffffffc19b5880 ptlrpc_gss ffffffffc1967000 524288 /tmp/crash-anaysis.il8DC/modules/ptlrpc_gss.ko ffffffffc19fac80 fld ffffffffc19e8000 126976 /tmp/crash-anaysis.il8DC/modules/fld.ko ffffffffc1a1aac0 fid ffffffffc1a08000 126976 /tmp/crash-anaysis.il8DC/modules/fid.ko ffffffffc1a3a740 ec ffffffffc1a28000 81920 /tmp/crash-anaysis.il8DC/modules/ec.ko ffffffffc1a7a080 lmv ffffffffc1a3d000 372736 /tmp/crash-anaysis.il8DC/modules/lmv.ko ffffffffc1b1b200 osc ffffffffc1a99000 790528 /tmp/crash-anaysis.il8DC/modules/osc.ko ffffffffc1bb3a00 lov ffffffffc1b5b000 552960 /tmp/crash-anaysis.il8DC/modules/lov.ko ffffffffc1c2db80 mdc ffffffffc1be3000 466944 /tmp/crash-anaysis.il8DC/modules/mdc.ko ffffffffc1c72000 mgc ffffffffc1c56000 184320 /tmp/crash-anaysis.il8DC/modules/mgc.ko ffffffffc1ca55c0 obdecho ffffffffc1c84000 225280 /tmp/crash-anaysis.il8DC/modules/obdecho.ko ffffffffc1d76340 lfsck ffffffffc1cbc000 1081344 /tmp/crash-anaysis.il8DC/modules/lfsck.ko ffffffffc1e45240 lquota ffffffffc1dc5000 786432 /tmp/crash-anaysis.il8DC/modules/lquota.ko ffffffffc1ef0ac0 osd_zfs ffffffffc1e86000 655360 /tmp/crash-anaysis.il8DC/modules/osd_zfs.ko ffffffffc1f8a400 mgs ffffffffc1f27000 626688 /tmp/crash-anaysis.il8DC/modules/mgs.ko ffffffffc203c080 mdd ffffffffc1fc1000 745472 /tmp/crash-anaysis.il8DC/modules/mdd.ko ffffffffc2186940 mdt ffffffffc2078000 1654784 /tmp/crash-anaysis.il8DC/modules/mdt.ko ffffffffc22b8480 lod ffffffffc220d000 1052672 /tmp/crash-anaysis.il8DC/modules/lod.ko ffffffffc237ee40 ofd ffffffffc230f000 692224 /tmp/crash-anaysis.il8DC/modules/ofd.ko ffffffffc2414f80 osp ffffffffc23b9000 573440 /tmp/crash-anaysis.il8DC/modules/osp.ko ffffffffc257a6c0 lustre ffffffffc2446000 1912832 /tmp/crash-anaysis.il8DC/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, 0xffff9c53a0722b68) 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 127 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, 0xffff9c5391c10428) 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 127 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, 0xffff9c5392cd52e8) 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 104 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, 0xffff9c5395c79308) 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 128 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 486 total debug pages from 4 CPUs to /tmp/crash-anaysis.il8DC/lustre.bin