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.wL0lL/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68883/testresults/sanity-compr-special6-zfs-rocky8.10_x86_64-rocky8.10_x86_64-retry1/oleg205-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 13:31:36 EDT 2026 UPTIME: 00:07:11 LOAD AVERAGE: 1.88, 1.54, 0.74 TASKS: 345 NODENAME: oleg205-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: 6513 COMMAND: "dp_sync_taskq" TASK: ffff92d050a54f80 [THREAD_INFO: ffff92d050a54f80] 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_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 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 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 crct10dif_pclmul 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 nfsv4 module mod: cannot find or load object file for rpcsec_gss_krb5 module MODULE NAME BASE SIZE OBJECT FILE ffffffffc07aac80 fld ffffffffc0798000 126976 /tmp/crash-anaysis.wL0lL/modules/fld.ko mod: cannot find or load object file for auth_rpcgss module mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc1163740 libcfs ffffffffc1143000 225280 /tmp/crash-anaysis.wL0lL/modules/libcfs.ko ffffffffc12563c0 lnet ffffffffc117b000 1490944 /tmp/crash-anaysis.wL0lL/modules/lnet.ko ffffffffc1311900 ksocklnd ffffffffc12e8000 270336 /tmp/crash-anaysis.wL0lL/modules/ksocklnd.ko ffffffffc14720c0 obdclass ffffffffc132b000 4415488 /tmp/crash-anaysis.wL0lL/modules/obdclass.ko ffffffffc19ee0c0 ptlrpc ffffffffc1762000 4173824 /tmp/crash-anaysis.wL0lL/modules/ptlrpc.ko ffffffffc1bac880 ptlrpc_gss ffffffffc1b5e000 524288 /tmp/crash-anaysis.wL0lL/modules/ptlrpc_gss.ko ffffffffc1bf1ac0 fid ffffffffc1bdf000 126976 /tmp/crash-anaysis.wL0lL/modules/fid.ko ffffffffc1c11740 ec ffffffffc1bff000 81920 /tmp/crash-anaysis.wL0lL/modules/ec.ko ffffffffc1c51080 lmv ffffffffc1c14000 372736 /tmp/crash-anaysis.wL0lL/modules/lmv.ko ffffffffc1cf2480 osc ffffffffc1c70000 790528 /tmp/crash-anaysis.wL0lL/modules/osc.ko ffffffffc1d8ab00 lov ffffffffc1d32000 552960 /tmp/crash-anaysis.wL0lL/modules/lov.ko ffffffffc1e04b80 mdc ffffffffc1dba000 466944 /tmp/crash-anaysis.wL0lL/modules/mdc.ko ffffffffc1e49000 mgc ffffffffc1e2d000 184320 /tmp/crash-anaysis.wL0lL/modules/mgc.ko ffffffffc1e7c5c0 obdecho ffffffffc1e5b000 225280 /tmp/crash-anaysis.wL0lL/modules/obdecho.ko ffffffffc1f4d340 lfsck ffffffffc1e93000 1081344 /tmp/crash-anaysis.wL0lL/modules/lfsck.ko ffffffffc201c240 lquota ffffffffc1f9c000 786432 /tmp/crash-anaysis.wL0lL/modules/lquota.ko ffffffffc20c8b80 osd_zfs ffffffffc205d000 659456 /tmp/crash-anaysis.wL0lL/modules/osd_zfs.ko ffffffffc2162400 mgs ffffffffc20ff000 626688 /tmp/crash-anaysis.wL0lL/modules/mgs.ko ffffffffc22140c0 mdd ffffffffc2199000 745472 /tmp/crash-anaysis.wL0lL/modules/mdd.ko ffffffffc235e900 mdt ffffffffc2250000 1654784 /tmp/crash-anaysis.wL0lL/modules/mdt.ko ffffffffc2492900 lod ffffffffc23e5000 1064960 /tmp/crash-anaysis.wL0lL/modules/lod.ko ffffffffc2558e40 ofd ffffffffc24ea000 688128 /tmp/crash-anaysis.wL0lL/modules/ofd.ko ffffffffc25eef80 osp ffffffffc2593000 573440 /tmp/crash-anaysis.wL0lL/modules/osp.ko ffffffffc2756780 lustre ffffffffc2620000 1925120 /tmp/crash-anaysis.wL0lL/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, 0xffff92d055c420c8) 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 135 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, 0xffff92d052ff1da8) 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 140 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, 0xffff92d047b6c408) 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 124 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, 0xffff92d044b90608) 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 134 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 533 total debug pages from 4 CPUs to /tmp/crash-anaysis.wL0lL/lustre.bin