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.Gfj7s/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68907/testresults/sanity-compr-special5-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg356-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 10:46:58 EDT 2026 UPTIME: 00:06:24 LOAD AVERAGE: 1.91, 1.48, 0.71 TASKS: 407 NODENAME: oleg356-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: 7890 COMMAND: "dp_sync_taskq" TASK: ffff9724811e27c0 [THREAD_INFO: ffff9724811e27c0] 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_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 crc32_pclmul module mod: cannot find or load object file for pcspkr 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 dns_resolver module mod: cannot find or load object file for ata_piix module mod: cannot find or load object file for ata_generic 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 rapl 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 ffffffffc06b1740 libcfs ffffffffc0691000 225280 /tmp/crash-anaysis.Gfj7s/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc10d33c0 lnet ffffffffc0ff8000 1490944 /tmp/crash-anaysis.Gfj7s/modules/lnet.ko ffffffffc118e900 ksocklnd ffffffffc1165000 270336 /tmp/crash-anaysis.Gfj7s/modules/ksocklnd.ko ffffffffc12eef80 obdclass ffffffffc11a8000 4415488 /tmp/crash-anaysis.Gfj7s/modules/obdclass.ko ffffffffc186b0c0 ptlrpc ffffffffc15df000 4173824 /tmp/crash-anaysis.Gfj7s/modules/ptlrpc.ko ffffffffc1a29880 ptlrpc_gss ffffffffc19db000 524288 /tmp/crash-anaysis.Gfj7s/modules/ptlrpc_gss.ko ffffffffc1a6ec80 fld ffffffffc1a5c000 126976 /tmp/crash-anaysis.Gfj7s/modules/fld.ko ffffffffc1a8eac0 fid ffffffffc1a7c000 126976 /tmp/crash-anaysis.Gfj7s/modules/fid.ko ffffffffc1aae740 ec ffffffffc1a9c000 81920 /tmp/crash-anaysis.Gfj7s/modules/ec.ko ffffffffc1aee080 lmv ffffffffc1ab1000 372736 /tmp/crash-anaysis.Gfj7s/modules/lmv.ko ffffffffc1b8f200 osc ffffffffc1b0d000 790528 /tmp/crash-anaysis.Gfj7s/modules/osc.ko ffffffffc1c27a00 lov ffffffffc1bcf000 552960 /tmp/crash-anaysis.Gfj7s/modules/lov.ko ffffffffc1ca1b80 mdc ffffffffc1c57000 466944 /tmp/crash-anaysis.Gfj7s/modules/mdc.ko ffffffffc1ce6000 mgc ffffffffc1cca000 184320 /tmp/crash-anaysis.Gfj7s/modules/mgc.ko ffffffffc1d195c0 obdecho ffffffffc1cf8000 225280 /tmp/crash-anaysis.Gfj7s/modules/obdecho.ko ffffffffc1dea340 lfsck ffffffffc1d30000 1081344 /tmp/crash-anaysis.Gfj7s/modules/lfsck.ko ffffffffc1eb9240 lquota ffffffffc1e39000 786432 /tmp/crash-anaysis.Gfj7s/modules/lquota.ko ffffffffc1f64ac0 osd_zfs ffffffffc1efa000 655360 /tmp/crash-anaysis.Gfj7s/modules/osd_zfs.ko ffffffffc1ffe400 mgs ffffffffc1f9b000 626688 /tmp/crash-anaysis.Gfj7s/modules/mgs.ko ffffffffc20b0080 mdd ffffffffc2035000 745472 /tmp/crash-anaysis.Gfj7s/modules/mdd.ko ffffffffc21fa940 mdt ffffffffc20ec000 1654784 /tmp/crash-anaysis.Gfj7s/modules/mdt.ko ffffffffc232c480 lod ffffffffc2281000 1052672 /tmp/crash-anaysis.Gfj7s/modules/lod.ko ffffffffc23f2e40 ofd ffffffffc2383000 692224 /tmp/crash-anaysis.Gfj7s/modules/ofd.ko ffffffffc2488f80 osp ffffffffc242d000 573440 /tmp/crash-anaysis.Gfj7s/modules/osp.ko ffffffffc25ee6c0 lustre ffffffffc24ba000 1912832 /tmp/crash-anaysis.Gfj7s/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, 0xffff972447e2f028) 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 183 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, 0xffff9724432d9a08) 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 218 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, 0xffff972447c64028) 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 174 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, 0xffff972442be31e8) 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 184 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 759 total debug pages from 4 CPUs to /tmp/crash-anaysis.Gfj7s/lustre.bin