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.Eh90M/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68883/testresults/sanity-compr-special8-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg214-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 13:29:48 EDT 2026 UPTIME: 00:07:35 LOAD AVERAGE: 1.86, 1.72, 0.89 TASKS: 348 NODENAME: oleg214-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: ffff97f42bc6cf80 [THREAD_INFO: ffff97f42bc6cf80] 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 crc32c_intel module mod: cannot find or load object file for crct10dif_pclmul 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 intel_rapl_msr 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 ata_piix module mod: cannot find or load object file for dns_resolver 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 squashfs 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 rpcsec_gss_krb5 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 ffffffffc0625740 libcfs ffffffffc0605000 225280 /tmp/crash-anaysis.Eh90M/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc10473c0 lnet ffffffffc0f6c000 1490944 /tmp/crash-anaysis.Eh90M/modules/lnet.ko ffffffffc1102900 ksocklnd ffffffffc10d9000 270336 /tmp/crash-anaysis.Eh90M/modules/ksocklnd.ko ffffffffc12630c0 obdclass ffffffffc111c000 4415488 /tmp/crash-anaysis.Eh90M/modules/obdclass.ko ffffffffc17df0c0 ptlrpc ffffffffc1553000 4173824 /tmp/crash-anaysis.Eh90M/modules/ptlrpc.ko ffffffffc199d880 ptlrpc_gss ffffffffc194f000 524288 /tmp/crash-anaysis.Eh90M/modules/ptlrpc_gss.ko ffffffffc19e2c80 fld ffffffffc19d0000 126976 /tmp/crash-anaysis.Eh90M/modules/fld.ko ffffffffc1a02ac0 fid ffffffffc19f0000 126976 /tmp/crash-anaysis.Eh90M/modules/fid.ko ffffffffc1a22740 ec ffffffffc1a10000 81920 /tmp/crash-anaysis.Eh90M/modules/ec.ko ffffffffc1a62080 lmv ffffffffc1a25000 372736 /tmp/crash-anaysis.Eh90M/modules/lmv.ko ffffffffc1b03480 osc ffffffffc1a81000 790528 /tmp/crash-anaysis.Eh90M/modules/osc.ko ffffffffc1b9bb00 lov ffffffffc1b43000 552960 /tmp/crash-anaysis.Eh90M/modules/lov.ko ffffffffc1c15b80 mdc ffffffffc1bcb000 466944 /tmp/crash-anaysis.Eh90M/modules/mdc.ko ffffffffc1c5a000 mgc ffffffffc1c3e000 184320 /tmp/crash-anaysis.Eh90M/modules/mgc.ko ffffffffc1c8d5c0 obdecho ffffffffc1c6c000 225280 /tmp/crash-anaysis.Eh90M/modules/obdecho.ko ffffffffc1d5e340 lfsck ffffffffc1ca4000 1081344 /tmp/crash-anaysis.Eh90M/modules/lfsck.ko ffffffffc1e2d240 lquota ffffffffc1dad000 786432 /tmp/crash-anaysis.Eh90M/modules/lquota.ko ffffffffc1ed9b80 osd_zfs ffffffffc1e6e000 659456 /tmp/crash-anaysis.Eh90M/modules/osd_zfs.ko ffffffffc1f73400 mgs ffffffffc1f10000 626688 /tmp/crash-anaysis.Eh90M/modules/mgs.ko ffffffffc20250c0 mdd ffffffffc1faa000 745472 /tmp/crash-anaysis.Eh90M/modules/mdd.ko ffffffffc216f900 mdt ffffffffc2061000 1654784 /tmp/crash-anaysis.Eh90M/modules/mdt.ko ffffffffc22a3900 lod ffffffffc21f6000 1064960 /tmp/crash-anaysis.Eh90M/modules/lod.ko ffffffffc2369e40 ofd ffffffffc22fb000 688128 /tmp/crash-anaysis.Eh90M/modules/ofd.ko ffffffffc23fff80 osp ffffffffc23a4000 573440 /tmp/crash-anaysis.Eh90M/modules/osp.ko ffffffffc2567780 lustre ffffffffc2431000 1925120 /tmp/crash-anaysis.Eh90M/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, 0xffff97f40ad33a48) 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 142 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, 0xffff97f413c95d48) 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 121 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, 0xffff97f41024cf88) 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 118 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, 0xffff97f40b73e648) 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 142 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 523 total debug pages from 4 CPUs to /tmp/crash-anaysis.Eh90M/lustre.bin