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.mrGws/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68898/testresults/sanity-compr-special7-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg641-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 10:57:08 EDT 2026 UPTIME: 00:05:22 LOAD AVERAGE: 1.49, 1.10, 0.50 TASKS: 355 NODENAME: oleg641-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: 6509 COMMAND: "dp_sync_taskq" TASK: ffff9e04089627c0 [THREAD_INFO: ffff9e04089627c0] 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_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 ata_piix module mod: cannot find or load object file for crc32c_intel module mod: cannot find or load object file for ata_generic module mod: cannot find or load object file for serio_raw 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 i2c_piix4 module mod: cannot find or load object file for intel_rapl_msr module mod: cannot find or load object file for pcspkr 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 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 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 ffffffffc07da740 libcfs ffffffffc07ba000 225280 /tmp/crash-anaysis.mrGws/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc11fc3c0 lnet ffffffffc1121000 1490944 /tmp/crash-anaysis.mrGws/modules/lnet.ko ffffffffc12b7900 ksocklnd ffffffffc128e000 270336 /tmp/crash-anaysis.mrGws/modules/ksocklnd.ko ffffffffc14180c0 obdclass ffffffffc12d1000 4415488 /tmp/crash-anaysis.mrGws/modules/obdclass.ko ffffffffc19940c0 ptlrpc ffffffffc1708000 4173824 /tmp/crash-anaysis.mrGws/modules/ptlrpc.ko ffffffffc1b52880 ptlrpc_gss ffffffffc1b04000 524288 /tmp/crash-anaysis.mrGws/modules/ptlrpc_gss.ko ffffffffc1b97c80 fld ffffffffc1b85000 126976 /tmp/crash-anaysis.mrGws/modules/fld.ko ffffffffc1bb7ac0 fid ffffffffc1ba5000 126976 /tmp/crash-anaysis.mrGws/modules/fid.ko ffffffffc1bd7740 ec ffffffffc1bc5000 81920 /tmp/crash-anaysis.mrGws/modules/ec.ko ffffffffc1c17080 lmv ffffffffc1bda000 372736 /tmp/crash-anaysis.mrGws/modules/lmv.ko ffffffffc1cb8380 osc ffffffffc1c36000 790528 /tmp/crash-anaysis.mrGws/modules/osc.ko ffffffffc1d50a00 lov ffffffffc1cf8000 552960 /tmp/crash-anaysis.mrGws/modules/lov.ko ffffffffc1dcab80 mdc ffffffffc1d80000 466944 /tmp/crash-anaysis.mrGws/modules/mdc.ko ffffffffc1e0f000 mgc ffffffffc1df3000 184320 /tmp/crash-anaysis.mrGws/modules/mgc.ko ffffffffc1e425c0 obdecho ffffffffc1e21000 225280 /tmp/crash-anaysis.mrGws/modules/obdecho.ko ffffffffc1f13340 lfsck ffffffffc1e59000 1081344 /tmp/crash-anaysis.mrGws/modules/lfsck.ko ffffffffc1fe2240 lquota ffffffffc1f62000 786432 /tmp/crash-anaysis.mrGws/modules/lquota.ko ffffffffc208eb80 osd_zfs ffffffffc2023000 659456 /tmp/crash-anaysis.mrGws/modules/osd_zfs.ko ffffffffc2128400 mgs ffffffffc20c5000 626688 /tmp/crash-anaysis.mrGws/modules/mgs.ko ffffffffc21da080 mdd ffffffffc215f000 745472 /tmp/crash-anaysis.mrGws/modules/mdd.ko ffffffffc2324900 mdt ffffffffc2216000 1654784 /tmp/crash-anaysis.mrGws/modules/mdt.ko ffffffffc2456540 lod ffffffffc23ab000 1056768 /tmp/crash-anaysis.mrGws/modules/lod.ko ffffffffc251ce00 ofd ffffffffc24ae000 688128 /tmp/crash-anaysis.mrGws/modules/ofd.ko ffffffffc25b2f80 osp ffffffffc2557000 573440 /tmp/crash-anaysis.mrGws/modules/osp.ko ffffffffc27184c0 lustre ffffffffc25e4000 1908736 /tmp/crash-anaysis.mrGws/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, 0xffff9e0410c49288) 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 138 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, 0xffff9e0408cbbee8) 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 120 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, 0xffff9e0402b9bf88) 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 136 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, 0xffff9e0409c7fe48) 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 517 total debug pages from 4 CPUs to /tmp/crash-anaysis.mrGws/lustre.bin