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.AMmiy/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68883/testresults/sanity-compr-special7-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg260-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 13:30:38 EDT 2026 UPTIME: 00:08:26 LOAD AVERAGE: 1.84, 1.60, 0.87 TASKS: 400 NODENAME: oleg260-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: 7937 COMMAND: "dp_sync_taskq" TASK: ffff9617ee48cf80 [THREAD_INFO: ffff9617ee48cf80] 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_log module mod: cannot find or load object file for dm_region_hash 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 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 serio_raw module mod: cannot find or load object file for ata_piix module mod: cannot find or load object file for i2c_piix4 module mod: cannot find or load object file for dns_resolver 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 sb_edac module mod: cannot find or load object file for intel_rapl_common module mod: cannot find or load object file for intel_rapl_msr module mod: cannot find or load object file for rpcsec_gss_krb5 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 MODULE NAME BASE SIZE OBJECT FILE ffffffffc06c3c80 fld ffffffffc06b1000 126976 /tmp/crash-anaysis.AMmiy/modules/fld.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc1030740 libcfs ffffffffc1010000 225280 /tmp/crash-anaysis.AMmiy/modules/libcfs.ko ffffffffc11233c0 lnet ffffffffc1048000 1490944 /tmp/crash-anaysis.AMmiy/modules/lnet.ko ffffffffc11de900 ksocklnd ffffffffc11b5000 270336 /tmp/crash-anaysis.AMmiy/modules/ksocklnd.ko ffffffffc133f0c0 obdclass ffffffffc11f8000 4415488 /tmp/crash-anaysis.AMmiy/modules/obdclass.ko ffffffffc18bb0c0 ptlrpc ffffffffc162f000 4173824 /tmp/crash-anaysis.AMmiy/modules/ptlrpc.ko ffffffffc1a79880 ptlrpc_gss ffffffffc1a2b000 524288 /tmp/crash-anaysis.AMmiy/modules/ptlrpc_gss.ko ffffffffc1abeac0 fid ffffffffc1aac000 126976 /tmp/crash-anaysis.AMmiy/modules/fid.ko ffffffffc1ade740 ec ffffffffc1acc000 81920 /tmp/crash-anaysis.AMmiy/modules/ec.ko ffffffffc1b1e080 lmv ffffffffc1ae1000 372736 /tmp/crash-anaysis.AMmiy/modules/lmv.ko ffffffffc1bbf480 osc ffffffffc1b3d000 790528 /tmp/crash-anaysis.AMmiy/modules/osc.ko ffffffffc1c57b00 lov ffffffffc1bff000 552960 /tmp/crash-anaysis.AMmiy/modules/lov.ko ffffffffc1cd1b80 mdc ffffffffc1c87000 466944 /tmp/crash-anaysis.AMmiy/modules/mdc.ko ffffffffc1d16000 mgc ffffffffc1cfa000 184320 /tmp/crash-anaysis.AMmiy/modules/mgc.ko ffffffffc1d495c0 obdecho ffffffffc1d28000 225280 /tmp/crash-anaysis.AMmiy/modules/obdecho.ko ffffffffc1e1a340 lfsck ffffffffc1d60000 1081344 /tmp/crash-anaysis.AMmiy/modules/lfsck.ko ffffffffc1ee9240 lquota ffffffffc1e69000 786432 /tmp/crash-anaysis.AMmiy/modules/lquota.ko ffffffffc1f95b80 osd_zfs ffffffffc1f2a000 659456 /tmp/crash-anaysis.AMmiy/modules/osd_zfs.ko ffffffffc202f400 mgs ffffffffc1fcc000 626688 /tmp/crash-anaysis.AMmiy/modules/mgs.ko ffffffffc20e10c0 mdd ffffffffc2066000 745472 /tmp/crash-anaysis.AMmiy/modules/mdd.ko ffffffffc222b900 mdt ffffffffc211d000 1654784 /tmp/crash-anaysis.AMmiy/modules/mdt.ko ffffffffc235f900 lod ffffffffc22b2000 1064960 /tmp/crash-anaysis.AMmiy/modules/lod.ko ffffffffc2425e40 ofd ffffffffc23b7000 688128 /tmp/crash-anaysis.AMmiy/modules/ofd.ko ffffffffc24bbf80 osp ffffffffc2460000 573440 /tmp/crash-anaysis.AMmiy/modules/osp.ko ffffffffc2623780 lustre ffffffffc24ed000 1925120 /tmp/crash-anaysis.AMmiy/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, 0xffff9617c89af428) 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 186 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, 0xffff9617c5d076a8) 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 261 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, 0xffff961800f292c8) 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 245 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, 0xffff9617d05c2888) 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 228 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 920 total debug pages from 4 CPUs to /tmp/crash-anaysis.AMmiy/lustre.bin