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. 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(determining panic task) KERNEL: /tmp/crash-anaysis.EPywM/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68883/testresults/sanity-compr-special9-zfs-rocky8.10_x86_64-rocky8.10_x86_64-retry1/oleg352-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 13:30:30 EDT 2026 UPTIME: 00:06:53 LOAD AVERAGE: 1.45, 1.56, 0.84 TASKS: 357 NODENAME: oleg352-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: 6508 COMMAND: "dp_sync_taskq" TASK: ffff9fb2d12f4f80 [THREAD_INFO: ffff9fb2d12f4f80] CPU: 0 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 ghash_clmulni_intel module mod: cannot find or load object file for pcspkr module mod: cannot find or load object file for crct10dif_pclmul 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 serio_raw module mod: cannot find or load object file for intel_rapl_msr module mod: cannot find or load object file for ata_generic 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 rapl module mod: cannot find or load object file for intel_rapl_common 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 nfsv4 module mod: cannot find or load object file for auth_rpcgss module MODULE NAME BASE SIZE OBJECT FILE ffffffffc060c740 libcfs ffffffffc05ec000 225280 /tmp/crash-anaysis.EPywM/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc102e3c0 lnet ffffffffc0f53000 1490944 /tmp/crash-anaysis.EPywM/modules/lnet.ko ffffffffc10e9900 ksocklnd ffffffffc10c0000 270336 /tmp/crash-anaysis.EPywM/modules/ksocklnd.ko ffffffffc124a0c0 obdclass ffffffffc1103000 4415488 /tmp/crash-anaysis.EPywM/modules/obdclass.ko ffffffffc17c60c0 ptlrpc ffffffffc153a000 4173824 /tmp/crash-anaysis.EPywM/modules/ptlrpc.ko ffffffffc1984880 ptlrpc_gss ffffffffc1936000 524288 /tmp/crash-anaysis.EPywM/modules/ptlrpc_gss.ko ffffffffc19c9c80 fld ffffffffc19b7000 126976 /tmp/crash-anaysis.EPywM/modules/fld.ko ffffffffc19e9ac0 fid ffffffffc19d7000 126976 /tmp/crash-anaysis.EPywM/modules/fid.ko ffffffffc1a09740 ec ffffffffc19f7000 81920 /tmp/crash-anaysis.EPywM/modules/ec.ko ffffffffc1a49080 lmv ffffffffc1a0c000 372736 /tmp/crash-anaysis.EPywM/modules/lmv.ko ffffffffc1aea480 osc ffffffffc1a68000 790528 /tmp/crash-anaysis.EPywM/modules/osc.ko ffffffffc1b82b00 lov ffffffffc1b2a000 552960 /tmp/crash-anaysis.EPywM/modules/lov.ko ffffffffc1bfcb80 mdc ffffffffc1bb2000 466944 /tmp/crash-anaysis.EPywM/modules/mdc.ko ffffffffc1c41000 mgc ffffffffc1c25000 184320 /tmp/crash-anaysis.EPywM/modules/mgc.ko ffffffffc1c745c0 obdecho ffffffffc1c53000 225280 /tmp/crash-anaysis.EPywM/modules/obdecho.ko ffffffffc1d45340 lfsck ffffffffc1c8b000 1081344 /tmp/crash-anaysis.EPywM/modules/lfsck.ko ffffffffc1e14240 lquota ffffffffc1d94000 786432 /tmp/crash-anaysis.EPywM/modules/lquota.ko ffffffffc1ec0b80 osd_zfs ffffffffc1e55000 659456 /tmp/crash-anaysis.EPywM/modules/osd_zfs.ko ffffffffc1f5a400 mgs ffffffffc1ef7000 626688 /tmp/crash-anaysis.EPywM/modules/mgs.ko ffffffffc200c0c0 mdd ffffffffc1f91000 745472 /tmp/crash-anaysis.EPywM/modules/mdd.ko ffffffffc2156900 mdt ffffffffc2048000 1654784 /tmp/crash-anaysis.EPywM/modules/mdt.ko ffffffffc228a900 lod ffffffffc21dd000 1064960 /tmp/crash-anaysis.EPywM/modules/lod.ko ffffffffc2350e40 ofd ffffffffc22e2000 688128 /tmp/crash-anaysis.EPywM/modules/ofd.ko ffffffffc23e6f80 osp ffffffffc238b000 573440 /tmp/crash-anaysis.EPywM/modules/osp.ko ffffffffc254e780 lustre ffffffffc2418000 1925120 /tmp/crash-anaysis.EPywM/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, 0xffff9fb2d08a6de8) 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 119 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, 0xffff9fb2c557a068) 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 133 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, 0xffff9fb2c55b2088) 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 128 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, 0xffff9fb2c3c828e8) 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 129 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 509 total debug pages from 4 CPUs to /tmp/crash-anaysis.EPywM/lustre.bin