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.BSJRw/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68887/testresults/sanity-compr-special1-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg251-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 13:35:43 EDT 2026 UPTIME: 00:07:04 LOAD AVERAGE: 1.98, 1.43, 0.68 TASKS: 403 NODENAME: oleg251-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: 7927 COMMAND: "dp_sync_taskq" TASK: ffff94e3bd120000 [THREAD_INFO: ffff94e3bd120000] 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 crc32_pclmul module mod: cannot find or load object file for ata_generic module mod: cannot find or load object file for pcspkr module mod: cannot find or load object file for i2c_piix4 module mod: cannot find or load object file for serio_raw 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 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 rpcsec_gss_krb5 module mod: cannot find or load object file for rapl 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 ffffffffc053cc80 fld ffffffffc052a000 126976 /tmp/crash-anaysis.BSJRw/modules/fld.ko ffffffffc055c740 ec ffffffffc054a000 81920 /tmp/crash-anaysis.BSJRw/modules/ec.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0eaf740 libcfs ffffffffc0e8f000 225280 /tmp/crash-anaysis.BSJRw/modules/libcfs.ko ffffffffc0fa23c0 lnet ffffffffc0ec7000 1490944 /tmp/crash-anaysis.BSJRw/modules/lnet.ko ffffffffc105d900 ksocklnd ffffffffc1034000 270336 /tmp/crash-anaysis.BSJRw/modules/ksocklnd.ko ffffffffc11be0c0 obdclass ffffffffc1077000 4415488 /tmp/crash-anaysis.BSJRw/modules/obdclass.ko ffffffffc173a0c0 ptlrpc ffffffffc14ae000 4173824 /tmp/crash-anaysis.BSJRw/modules/ptlrpc.ko ffffffffc18f8880 ptlrpc_gss ffffffffc18aa000 524288 /tmp/crash-anaysis.BSJRw/modules/ptlrpc_gss.ko ffffffffc193dac0 fid ffffffffc192b000 126976 /tmp/crash-anaysis.BSJRw/modules/fid.ko ffffffffc1988080 lmv ffffffffc194b000 372736 /tmp/crash-anaysis.BSJRw/modules/lmv.ko ffffffffc1a29440 osc ffffffffc19a7000 790528 /tmp/crash-anaysis.BSJRw/modules/osc.ko ffffffffc1ac1a80 lov ffffffffc1a69000 552960 /tmp/crash-anaysis.BSJRw/modules/lov.ko ffffffffc1b3bb80 mdc ffffffffc1af1000 466944 /tmp/crash-anaysis.BSJRw/modules/mdc.ko ffffffffc1b80000 mgc ffffffffc1b64000 184320 /tmp/crash-anaysis.BSJRw/modules/mgc.ko ffffffffc1bb35c0 obdecho ffffffffc1b92000 225280 /tmp/crash-anaysis.BSJRw/modules/obdecho.ko ffffffffc1c84340 lfsck ffffffffc1bca000 1081344 /tmp/crash-anaysis.BSJRw/modules/lfsck.ko ffffffffc1d53240 lquota ffffffffc1cd3000 786432 /tmp/crash-anaysis.BSJRw/modules/lquota.ko ffffffffc1dffb80 osd_zfs ffffffffc1d94000 659456 /tmp/crash-anaysis.BSJRw/modules/osd_zfs.ko ffffffffc1e99400 mgs ffffffffc1e36000 626688 /tmp/crash-anaysis.BSJRw/modules/mgs.ko ffffffffc1f4b0c0 mdd ffffffffc1ed0000 745472 /tmp/crash-anaysis.BSJRw/modules/mdd.ko ffffffffc2095900 mdt ffffffffc1f87000 1654784 /tmp/crash-anaysis.BSJRw/modules/mdt.ko ffffffffc21c7680 lod ffffffffc211c000 1056768 /tmp/crash-anaysis.BSJRw/modules/lod.ko ffffffffc228de40 ofd ffffffffc221f000 688128 /tmp/crash-anaysis.BSJRw/modules/ofd.ko ffffffffc2323f80 osp ffffffffc22c8000 573440 /tmp/crash-anaysis.BSJRw/modules/osp.ko ffffffffc248a580 lustre ffffffffc2355000 1912832 /tmp/crash-anaysis.BSJRw/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, 0xffff94e389ea6ce8) 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 251 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, 0xffff94e384f834e8) 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 234 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, 0xffff94e393b8df88) 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 204 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, 0xffff94e387ecd388) 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 240 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 929 total debug pages from 4 CPUs to /tmp/crash-anaysis.BSJRw/lustre.bin