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.37Ejo/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68890/testresults/sanity-compr-special6-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg253-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 13:21:30 EDT 2026 UPTIME: 00:03:49 LOAD AVERAGE: 0.63, 0.73, 0.34 TASKS: 364 NODENAME: oleg253-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: 6458 COMMAND: "dp_sync_taskq" TASK: ffff9dfcc4eb4f80 [THREAD_INFO: ffff9dfcc4eb4f80] 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 ata_generic 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 crc32_pclmul module mod: cannot find or load object file for ghash_clmulni_intel module mod: cannot find or load object file for squashfs module mod: cannot find or load object file for pcspkr 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 sb_edac module mod: cannot find or load object file for intel_rapl_common module mod: cannot find or load object file for rapl module mod: cannot find or load object file for nfsv4 module mod: cannot find or load object file for auth_rpcgss module mod: cannot find or load object file for rpcsec_gss_krb5 module MODULE NAME BASE SIZE OBJECT FILE ffffffffc069cc80 fld ffffffffc068a000 126976 /tmp/crash-anaysis.37Ejo/modules/fld.ko ffffffffc06bc740 ec ffffffffc06aa000 81920 /tmp/crash-anaysis.37Ejo/modules/ec.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc1011740 libcfs ffffffffc0ff1000 225280 /tmp/crash-anaysis.37Ejo/modules/libcfs.ko ffffffffc11043c0 lnet ffffffffc1029000 1490944 /tmp/crash-anaysis.37Ejo/modules/lnet.ko ffffffffc11bf900 ksocklnd ffffffffc1196000 270336 /tmp/crash-anaysis.37Ejo/modules/ksocklnd.ko ffffffffc13200c0 obdclass ffffffffc11d9000 4415488 /tmp/crash-anaysis.37Ejo/modules/obdclass.ko ffffffffc189c0c0 ptlrpc ffffffffc1610000 4173824 /tmp/crash-anaysis.37Ejo/modules/ptlrpc.ko ffffffffc1a5a880 ptlrpc_gss ffffffffc1a0c000 524288 /tmp/crash-anaysis.37Ejo/modules/ptlrpc_gss.ko ffffffffc1a9fac0 fid ffffffffc1a8d000 126976 /tmp/crash-anaysis.37Ejo/modules/fid.ko ffffffffc1aea080 lmv ffffffffc1aad000 372736 /tmp/crash-anaysis.37Ejo/modules/lmv.ko ffffffffc1b8b380 osc ffffffffc1b09000 790528 /tmp/crash-anaysis.37Ejo/modules/osc.ko ffffffffc1c23a00 lov ffffffffc1bcb000 552960 /tmp/crash-anaysis.37Ejo/modules/lov.ko ffffffffc1c9db80 mdc ffffffffc1c53000 466944 /tmp/crash-anaysis.37Ejo/modules/mdc.ko ffffffffc1ce2000 mgc ffffffffc1cc6000 184320 /tmp/crash-anaysis.37Ejo/modules/mgc.ko ffffffffc1d155c0 obdecho ffffffffc1cf4000 225280 /tmp/crash-anaysis.37Ejo/modules/obdecho.ko ffffffffc1de6340 lfsck ffffffffc1d2c000 1081344 /tmp/crash-anaysis.37Ejo/modules/lfsck.ko ffffffffc1eb5240 lquota ffffffffc1e35000 786432 /tmp/crash-anaysis.37Ejo/modules/lquota.ko ffffffffc1f61b80 osd_zfs ffffffffc1ef6000 659456 /tmp/crash-anaysis.37Ejo/modules/osd_zfs.ko ffffffffc1ffb400 mgs ffffffffc1f98000 626688 /tmp/crash-anaysis.37Ejo/modules/mgs.ko ffffffffc20ad080 mdd ffffffffc2032000 745472 /tmp/crash-anaysis.37Ejo/modules/mdd.ko ffffffffc21f7900 mdt ffffffffc20e9000 1654784 /tmp/crash-anaysis.37Ejo/modules/mdt.ko ffffffffc2329540 lod ffffffffc227e000 1056768 /tmp/crash-anaysis.37Ejo/modules/lod.ko ffffffffc23efe40 ofd ffffffffc2381000 688128 /tmp/crash-anaysis.37Ejo/modules/ofd.ko ffffffffc2485f80 osp ffffffffc242a000 573440 /tmp/crash-anaysis.37Ejo/modules/osp.ko ffffffffc25eb4c0 lustre ffffffffc24b7000 1908736 /tmp/crash-anaysis.37Ejo/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, 0xffff9dfce1c6b0a8) 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 114 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, 0xffff9dfcd8f98c68) 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 104 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, 0xffff9dfcd87ba6c8) 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 115 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, 0xffff9dfce0031de8) 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 122 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 455 total debug pages from 4 CPUs to /tmp/crash-anaysis.37Ejo/lustre.bin