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.R4JZh/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68899/testresults/sanity-compr-special3-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg243-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 11:04:20 EDT 2026 UPTIME: 00:06:57 LOAD AVERAGE: 1.92, 1.57, 0.79 TASKS: 351 NODENAME: oleg243-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: 6548 COMMAND: "dp_sync_taskq" TASK: ffff9c35d0038000 [THREAD_INFO: ffff9c35d0038000] CPU: 3 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 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 pcspkr module mod: cannot find or load object file for rapl 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_piix module mod: cannot find or load object file for i2c_piix4 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 dns_resolver 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 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 ffffffffc0768740 libcfs ffffffffc0748000 225280 /tmp/crash-anaysis.R4JZh/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc118a3c0 lnet ffffffffc10af000 1490944 /tmp/crash-anaysis.R4JZh/modules/lnet.ko ffffffffc1245900 ksocklnd ffffffffc121c000 270336 /tmp/crash-anaysis.R4JZh/modules/ksocklnd.ko ffffffffc13a60c0 obdclass ffffffffc125f000 4415488 /tmp/crash-anaysis.R4JZh/modules/obdclass.ko ffffffffc19220c0 ptlrpc ffffffffc1696000 4173824 /tmp/crash-anaysis.R4JZh/modules/ptlrpc.ko ffffffffc1ae0880 ptlrpc_gss ffffffffc1a92000 524288 /tmp/crash-anaysis.R4JZh/modules/ptlrpc_gss.ko ffffffffc1b25c80 fld ffffffffc1b13000 126976 /tmp/crash-anaysis.R4JZh/modules/fld.ko ffffffffc1b45ac0 fid ffffffffc1b33000 126976 /tmp/crash-anaysis.R4JZh/modules/fid.ko ffffffffc1b65740 ec ffffffffc1b53000 81920 /tmp/crash-anaysis.R4JZh/modules/ec.ko ffffffffc1ba5080 lmv ffffffffc1b68000 372736 /tmp/crash-anaysis.R4JZh/modules/lmv.ko ffffffffc1c46340 osc ffffffffc1bc4000 790528 /tmp/crash-anaysis.R4JZh/modules/osc.ko ffffffffc1cdea00 lov ffffffffc1c86000 552960 /tmp/crash-anaysis.R4JZh/modules/lov.ko ffffffffc1d58b80 mdc ffffffffc1d0e000 466944 /tmp/crash-anaysis.R4JZh/modules/mdc.ko ffffffffc1d9d000 mgc ffffffffc1d81000 184320 /tmp/crash-anaysis.R4JZh/modules/mgc.ko ffffffffc1dd05c0 obdecho ffffffffc1daf000 225280 /tmp/crash-anaysis.R4JZh/modules/obdecho.ko ffffffffc1ea1340 lfsck ffffffffc1de7000 1081344 /tmp/crash-anaysis.R4JZh/modules/lfsck.ko ffffffffc1f70240 lquota ffffffffc1ef0000 786432 /tmp/crash-anaysis.R4JZh/modules/lquota.ko ffffffffc201cb80 osd_zfs ffffffffc1fb1000 659456 /tmp/crash-anaysis.R4JZh/modules/osd_zfs.ko ffffffffc20b6400 mgs ffffffffc2053000 626688 /tmp/crash-anaysis.R4JZh/modules/mgs.ko ffffffffc2168080 mdd ffffffffc20ed000 745472 /tmp/crash-anaysis.R4JZh/modules/mdd.ko ffffffffc22b2900 mdt ffffffffc21a4000 1654784 /tmp/crash-anaysis.R4JZh/modules/mdt.ko ffffffffc23e4540 lod ffffffffc2339000 1056768 /tmp/crash-anaysis.R4JZh/modules/lod.ko ffffffffc24aae00 ofd ffffffffc243c000 688128 /tmp/crash-anaysis.R4JZh/modules/ofd.ko ffffffffc2540f80 osp ffffffffc24e5000 573440 /tmp/crash-anaysis.R4JZh/modules/osp.ko ffffffffc26a64c0 lustre ffffffffc2572000 1908736 /tmp/crash-anaysis.R4JZh/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, 0xffff9c35e0587d68) 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 148 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, 0xffff9c35e03a9808) 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 118 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, 0xffff9c35d80f2188) 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 126 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, 0xffff9c35d08b5ae8) 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 136 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 528 total debug pages from 4 CPUs to /tmp/crash-anaysis.R4JZh/lustre.bin