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.oK633/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68883/testresults/sanity-compr-special5-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64-retry1/oleg227-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 13:30:51 EDT 2026 UPTIME: 00:06:49 LOAD AVERAGE: 1.44, 1.25, 0.63 TASKS: 401 NODENAME: oleg227-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: 7922 COMMAND: "dp_sync_taskq" TASK: ffff94f3c0c7a7c0 [THREAD_INFO: ffff94f3c0c7a7c0] 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_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 serio_raw 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 ghash_clmulni_intel module mod: cannot find or load object file for pcspkr module mod: cannot find or load object file for ata_piix module mod: cannot find or load object file for intel_rapl_msr 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 crc32c_intel module mod: cannot find or load object file for squashfs module mod: cannot find or load object file for intel_rapl_common 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 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 ffffffffc04af740 libcfs ffffffffc048f000 225280 /tmp/crash-anaysis.oK633/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0ed13c0 lnet ffffffffc0df6000 1490944 /tmp/crash-anaysis.oK633/modules/lnet.ko ffffffffc0f8c900 ksocklnd ffffffffc0f63000 270336 /tmp/crash-anaysis.oK633/modules/ksocklnd.ko ffffffffc10ed0c0 obdclass ffffffffc0fa6000 4415488 /tmp/crash-anaysis.oK633/modules/obdclass.ko ffffffffc16690c0 ptlrpc ffffffffc13dd000 4173824 /tmp/crash-anaysis.oK633/modules/ptlrpc.ko ffffffffc1827880 ptlrpc_gss ffffffffc17d9000 524288 /tmp/crash-anaysis.oK633/modules/ptlrpc_gss.ko ffffffffc186cc80 fld ffffffffc185a000 126976 /tmp/crash-anaysis.oK633/modules/fld.ko ffffffffc188cac0 fid ffffffffc187a000 126976 /tmp/crash-anaysis.oK633/modules/fid.ko ffffffffc18ac740 ec ffffffffc189a000 81920 /tmp/crash-anaysis.oK633/modules/ec.ko ffffffffc18ec080 lmv ffffffffc18af000 372736 /tmp/crash-anaysis.oK633/modules/lmv.ko ffffffffc198d480 osc ffffffffc190b000 790528 /tmp/crash-anaysis.oK633/modules/osc.ko ffffffffc1a25b00 lov ffffffffc19cd000 552960 /tmp/crash-anaysis.oK633/modules/lov.ko ffffffffc1a9fb80 mdc ffffffffc1a55000 466944 /tmp/crash-anaysis.oK633/modules/mdc.ko ffffffffc1ae4000 mgc ffffffffc1ac8000 184320 /tmp/crash-anaysis.oK633/modules/mgc.ko ffffffffc1b175c0 obdecho ffffffffc1af6000 225280 /tmp/crash-anaysis.oK633/modules/obdecho.ko ffffffffc1be8340 lfsck ffffffffc1b2e000 1081344 /tmp/crash-anaysis.oK633/modules/lfsck.ko ffffffffc1cb7240 lquota ffffffffc1c37000 786432 /tmp/crash-anaysis.oK633/modules/lquota.ko ffffffffc1d63b80 osd_zfs ffffffffc1cf8000 659456 /tmp/crash-anaysis.oK633/modules/osd_zfs.ko ffffffffc1dfd400 mgs ffffffffc1d9a000 626688 /tmp/crash-anaysis.oK633/modules/mgs.ko ffffffffc1eaf0c0 mdd ffffffffc1e34000 745472 /tmp/crash-anaysis.oK633/modules/mdd.ko ffffffffc1ff9900 mdt ffffffffc1eeb000 1654784 /tmp/crash-anaysis.oK633/modules/mdt.ko ffffffffc212d900 lod ffffffffc2080000 1064960 /tmp/crash-anaysis.oK633/modules/lod.ko ffffffffc21f3e40 ofd ffffffffc2185000 688128 /tmp/crash-anaysis.oK633/modules/ofd.ko ffffffffc2289f80 osp ffffffffc222e000 573440 /tmp/crash-anaysis.oK633/modules/osp.ko ffffffffc23f1780 lustre ffffffffc22bb000 1925120 /tmp/crash-anaysis.oK633/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, 0xffff94f390708408) 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 217 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, 0xffff94f39076ffc8) 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 249 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, 0xffff94f39800f268) 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 218 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, 0xffff94f3915b2808) 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 238 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 922 total debug pages from 4 CPUs to /tmp/crash-anaysis.oK633/lustre.bin