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.Gj3dN/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68898/testresults/sanity-compr-special5-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg607-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 10:57:36 EDT 2026 UPTIME: 00:05:32 LOAD AVERAGE: 1.34, 1.26, 0.62 TASKS: 346 NODENAME: oleg607-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: 6501 COMMAND: "dp_sync_taskq" TASK: ffff8e5290684f80 [THREAD_INFO: ffff8e5290684f80] 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_log module mod: cannot find or load object file for dm_region_hash 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 i2c_piix4 module mod: cannot find or load object file for rapl module mod: cannot find or load object file for serio_raw module mod: cannot find or load object file for ata_piix 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 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 intel_rapl_common 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 nfsv4 module mod: cannot find or load object file for auth_rpcgss module MODULE NAME BASE SIZE OBJECT FILE ffffffffc05c9740 libcfs ffffffffc05a9000 225280 /tmp/crash-anaysis.Gj3dN/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0feb3c0 lnet ffffffffc0f10000 1490944 /tmp/crash-anaysis.Gj3dN/modules/lnet.ko ffffffffc10a6900 ksocklnd ffffffffc107d000 270336 /tmp/crash-anaysis.Gj3dN/modules/ksocklnd.ko ffffffffc12070c0 obdclass ffffffffc10c0000 4415488 /tmp/crash-anaysis.Gj3dN/modules/obdclass.ko ffffffffc17830c0 ptlrpc ffffffffc14f7000 4173824 /tmp/crash-anaysis.Gj3dN/modules/ptlrpc.ko ffffffffc1941880 ptlrpc_gss ffffffffc18f3000 524288 /tmp/crash-anaysis.Gj3dN/modules/ptlrpc_gss.ko ffffffffc1986c80 fld ffffffffc1974000 126976 /tmp/crash-anaysis.Gj3dN/modules/fld.ko ffffffffc19a6ac0 fid ffffffffc1994000 126976 /tmp/crash-anaysis.Gj3dN/modules/fid.ko ffffffffc19c6740 ec ffffffffc19b4000 81920 /tmp/crash-anaysis.Gj3dN/modules/ec.ko ffffffffc1a06080 lmv ffffffffc19c9000 372736 /tmp/crash-anaysis.Gj3dN/modules/lmv.ko ffffffffc1aa7380 osc ffffffffc1a25000 790528 /tmp/crash-anaysis.Gj3dN/modules/osc.ko ffffffffc1b3fa00 lov ffffffffc1ae7000 552960 /tmp/crash-anaysis.Gj3dN/modules/lov.ko ffffffffc1bb9b80 mdc ffffffffc1b6f000 466944 /tmp/crash-anaysis.Gj3dN/modules/mdc.ko ffffffffc1bfe000 mgc ffffffffc1be2000 184320 /tmp/crash-anaysis.Gj3dN/modules/mgc.ko ffffffffc1c315c0 obdecho ffffffffc1c10000 225280 /tmp/crash-anaysis.Gj3dN/modules/obdecho.ko ffffffffc1d02340 lfsck ffffffffc1c48000 1081344 /tmp/crash-anaysis.Gj3dN/modules/lfsck.ko ffffffffc1dd1240 lquota ffffffffc1d51000 786432 /tmp/crash-anaysis.Gj3dN/modules/lquota.ko ffffffffc1e7db80 osd_zfs ffffffffc1e12000 659456 /tmp/crash-anaysis.Gj3dN/modules/osd_zfs.ko ffffffffc1f17400 mgs ffffffffc1eb4000 626688 /tmp/crash-anaysis.Gj3dN/modules/mgs.ko ffffffffc1fc9080 mdd ffffffffc1f4e000 745472 /tmp/crash-anaysis.Gj3dN/modules/mdd.ko ffffffffc2113900 mdt ffffffffc2005000 1654784 /tmp/crash-anaysis.Gj3dN/modules/mdt.ko ffffffffc2245540 lod ffffffffc219a000 1056768 /tmp/crash-anaysis.Gj3dN/modules/lod.ko ffffffffc230be00 ofd ffffffffc229d000 688128 /tmp/crash-anaysis.Gj3dN/modules/ofd.ko ffffffffc23a1f80 osp ffffffffc2346000 573440 /tmp/crash-anaysis.Gj3dN/modules/osp.ko ffffffffc25074c0 lustre ffffffffc23d3000 1908736 /tmp/crash-anaysis.Gj3dN/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, 0xffff8e528a07fda8) 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 119 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, 0xffff8e5293392a48) 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 144 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, 0xffff8e5282aed128) 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 114 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, 0xffff8e5290a50c28) 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 123 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 500 total debug pages from 4 CPUs to /tmp/crash-anaysis.Gj3dN/lustre.bin