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.ibr4P/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68883/testresults/sanity-compr-special7-zfs-rocky8.10_x86_64-rocky8.10_x86_64-retry1/oleg432-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 13:29:42 EDT 2026 UPTIME: 00:05:47 LOAD AVERAGE: 1.70, 1.22, 0.56 TASKS: 349 NODENAME: oleg432-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: 6508 COMMAND: "dp_sync_taskq" TASK: ffff9d46e03527c0 [THREAD_INFO: ffff9d46e03527c0] 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 pcspkr 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 ghash_clmulni_intel module mod: cannot find or load object file for crc32_pclmul module mod: cannot find or load object file for crct10dif_pclmul 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 i2c_piix4 module mod: cannot find or load object file for intel_rapl_msr 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 sb_edac 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 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 ffffffffc06a1c80 fld ffffffffc068f000 126976 /tmp/crash-anaysis.ibr4P/modules/fld.ko ffffffffc06c1740 ec ffffffffc06af000 81920 /tmp/crash-anaysis.ibr4P/modules/ec.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc1014740 libcfs ffffffffc0ff4000 225280 /tmp/crash-anaysis.ibr4P/modules/libcfs.ko ffffffffc11073c0 lnet ffffffffc102c000 1490944 /tmp/crash-anaysis.ibr4P/modules/lnet.ko ffffffffc11c2900 ksocklnd ffffffffc1199000 270336 /tmp/crash-anaysis.ibr4P/modules/ksocklnd.ko ffffffffc13230c0 obdclass ffffffffc11dc000 4415488 /tmp/crash-anaysis.ibr4P/modules/obdclass.ko ffffffffc189f0c0 ptlrpc ffffffffc1613000 4173824 /tmp/crash-anaysis.ibr4P/modules/ptlrpc.ko ffffffffc1a5d880 ptlrpc_gss ffffffffc1a0f000 524288 /tmp/crash-anaysis.ibr4P/modules/ptlrpc_gss.ko ffffffffc1aa2ac0 fid ffffffffc1a90000 126976 /tmp/crash-anaysis.ibr4P/modules/fid.ko ffffffffc1aed080 lmv ffffffffc1ab0000 372736 /tmp/crash-anaysis.ibr4P/modules/lmv.ko ffffffffc1b8e480 osc ffffffffc1b0c000 790528 /tmp/crash-anaysis.ibr4P/modules/osc.ko ffffffffc1c26b00 lov ffffffffc1bce000 552960 /tmp/crash-anaysis.ibr4P/modules/lov.ko ffffffffc1ca0b80 mdc ffffffffc1c56000 466944 /tmp/crash-anaysis.ibr4P/modules/mdc.ko ffffffffc1ce5000 mgc ffffffffc1cc9000 184320 /tmp/crash-anaysis.ibr4P/modules/mgc.ko ffffffffc1d185c0 obdecho ffffffffc1cf7000 225280 /tmp/crash-anaysis.ibr4P/modules/obdecho.ko ffffffffc1de9340 lfsck ffffffffc1d2f000 1081344 /tmp/crash-anaysis.ibr4P/modules/lfsck.ko ffffffffc1eb8240 lquota ffffffffc1e38000 786432 /tmp/crash-anaysis.ibr4P/modules/lquota.ko ffffffffc1f64b80 osd_zfs ffffffffc1ef9000 659456 /tmp/crash-anaysis.ibr4P/modules/osd_zfs.ko ffffffffc1ffe400 mgs ffffffffc1f9b000 626688 /tmp/crash-anaysis.ibr4P/modules/mgs.ko ffffffffc20b00c0 mdd ffffffffc2035000 745472 /tmp/crash-anaysis.ibr4P/modules/mdd.ko ffffffffc21fa900 mdt ffffffffc20ec000 1654784 /tmp/crash-anaysis.ibr4P/modules/mdt.ko ffffffffc232e900 lod ffffffffc2281000 1064960 /tmp/crash-anaysis.ibr4P/modules/lod.ko ffffffffc23f4e40 ofd ffffffffc2386000 688128 /tmp/crash-anaysis.ibr4P/modules/ofd.ko ffffffffc248af80 osp ffffffffc242f000 573440 /tmp/crash-anaysis.ibr4P/modules/osp.ko ffffffffc25f2780 lustre ffffffffc24bc000 1925120 /tmp/crash-anaysis.ibr4P/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, 0xffff9d46d0524648) 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 135 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, 0xffff9d46c4de69a8) 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 115 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, 0xffff9d46c5f1f768) 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 158 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, 0xffff9d46d05459c8) 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 113 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 521 total debug pages from 4 CPUs to /tmp/crash-anaysis.ibr4P/lustre.bin