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.uG0UD/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68907/testresults/sanity-compr-special5-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg208-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 10:45:52 EDT 2026 UPTIME: 00:05:13 LOAD AVERAGE: 1.28, 1.40, 0.66 TASKS: 358 NODENAME: oleg208-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: 6482 COMMAND: "dp_sync_taskq" TASK: ffff9a2dd0738000 [THREAD_INFO: ffff9a2dd0738000] 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_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 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 ata_generic module mod: cannot find or load object file for crct10dif_pclmul 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 intel_rapl_msr module mod: cannot find or load object file for pcspkr 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 rapl module mod: cannot find or load object file for dns_resolver 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 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 ffffffffc0463c80 fld ffffffffc0451000 126976 /tmp/crash-anaysis.uG0UD/modules/fld.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0dc6740 libcfs ffffffffc0da6000 225280 /tmp/crash-anaysis.uG0UD/modules/libcfs.ko ffffffffc0eb93c0 lnet ffffffffc0dde000 1490944 /tmp/crash-anaysis.uG0UD/modules/lnet.ko ffffffffc0f74900 ksocklnd ffffffffc0f4b000 270336 /tmp/crash-anaysis.uG0UD/modules/ksocklnd.ko ffffffffc10d4f80 obdclass ffffffffc0f8e000 4415488 /tmp/crash-anaysis.uG0UD/modules/obdclass.ko ffffffffc16510c0 ptlrpc ffffffffc13c5000 4173824 /tmp/crash-anaysis.uG0UD/modules/ptlrpc.ko ffffffffc180f880 ptlrpc_gss ffffffffc17c1000 524288 /tmp/crash-anaysis.uG0UD/modules/ptlrpc_gss.ko ffffffffc1854ac0 fid ffffffffc1842000 126976 /tmp/crash-anaysis.uG0UD/modules/fid.ko ffffffffc1874740 ec ffffffffc1862000 81920 /tmp/crash-anaysis.uG0UD/modules/ec.ko ffffffffc18b4080 lmv ffffffffc1877000 372736 /tmp/crash-anaysis.uG0UD/modules/lmv.ko ffffffffc1955200 osc ffffffffc18d3000 790528 /tmp/crash-anaysis.uG0UD/modules/osc.ko ffffffffc19eda00 lov ffffffffc1995000 552960 /tmp/crash-anaysis.uG0UD/modules/lov.ko ffffffffc1a67b80 mdc ffffffffc1a1d000 466944 /tmp/crash-anaysis.uG0UD/modules/mdc.ko ffffffffc1aac000 mgc ffffffffc1a90000 184320 /tmp/crash-anaysis.uG0UD/modules/mgc.ko ffffffffc1adf5c0 obdecho ffffffffc1abe000 225280 /tmp/crash-anaysis.uG0UD/modules/obdecho.ko ffffffffc1bb0340 lfsck ffffffffc1af6000 1081344 /tmp/crash-anaysis.uG0UD/modules/lfsck.ko ffffffffc1c7f240 lquota ffffffffc1bff000 786432 /tmp/crash-anaysis.uG0UD/modules/lquota.ko ffffffffc1d2aac0 osd_zfs ffffffffc1cc0000 655360 /tmp/crash-anaysis.uG0UD/modules/osd_zfs.ko ffffffffc1dc4400 mgs ffffffffc1d61000 626688 /tmp/crash-anaysis.uG0UD/modules/mgs.ko ffffffffc1e76080 mdd ffffffffc1dfb000 745472 /tmp/crash-anaysis.uG0UD/modules/mdd.ko ffffffffc1fc0940 mdt ffffffffc1eb2000 1654784 /tmp/crash-anaysis.uG0UD/modules/mdt.ko ffffffffc20f2480 lod ffffffffc2047000 1052672 /tmp/crash-anaysis.uG0UD/modules/lod.ko ffffffffc21b8e40 ofd ffffffffc2149000 692224 /tmp/crash-anaysis.uG0UD/modules/ofd.ko ffffffffc224ef80 osp ffffffffc21f3000 573440 /tmp/crash-anaysis.uG0UD/modules/osp.ko ffffffffc23b46c0 lustre ffffffffc2280000 1912832 /tmp/crash-anaysis.uG0UD/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, 0xffff9a2dd2232628) 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 128 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, 0xffff9a2ddd79f4a8) 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 115 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, 0xffff9a2dc328e5a8) 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 121 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, 0xffff9a2dc52fc448) 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 122 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.uG0UD/lustre.bin