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.kbpBZ/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68890/testresults/sanity-compr-special1-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg239-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 13:23:47 EDT 2026 UPTIME: 00:05:29 LOAD AVERAGE: 0.77, 0.63, 0.31 TASKS: 358 NODENAME: oleg239-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: 6483 COMMAND: "dp_sync_taskq" TASK: ffff97a6834c0000 [THREAD_INFO: ffff97a6834c0000] 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 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 pcspkr module mod: cannot find or load object file for rapl 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 i2c_piix4 module mod: cannot find or load object file for intel_rapl_msr module mod: cannot find or load object file for ata_generic 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 sb_edac module mod: cannot find or load object file for intel_rapl_common module mod: cannot find or load object file for dns_resolver 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 ffffffffc051f740 libcfs ffffffffc04ff000 225280 /tmp/crash-anaysis.kbpBZ/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0f413c0 lnet ffffffffc0e66000 1490944 /tmp/crash-anaysis.kbpBZ/modules/lnet.ko ffffffffc0ffc900 ksocklnd ffffffffc0fd3000 270336 /tmp/crash-anaysis.kbpBZ/modules/ksocklnd.ko ffffffffc115d0c0 obdclass ffffffffc1016000 4415488 /tmp/crash-anaysis.kbpBZ/modules/obdclass.ko ffffffffc16d90c0 ptlrpc ffffffffc144d000 4173824 /tmp/crash-anaysis.kbpBZ/modules/ptlrpc.ko ffffffffc1897880 ptlrpc_gss ffffffffc1849000 524288 /tmp/crash-anaysis.kbpBZ/modules/ptlrpc_gss.ko ffffffffc18dcc80 fld ffffffffc18ca000 126976 /tmp/crash-anaysis.kbpBZ/modules/fld.ko ffffffffc18fcac0 fid ffffffffc18ea000 126976 /tmp/crash-anaysis.kbpBZ/modules/fid.ko ffffffffc191c740 ec ffffffffc190a000 81920 /tmp/crash-anaysis.kbpBZ/modules/ec.ko ffffffffc195c080 lmv ffffffffc191f000 372736 /tmp/crash-anaysis.kbpBZ/modules/lmv.ko ffffffffc19fd380 osc ffffffffc197b000 790528 /tmp/crash-anaysis.kbpBZ/modules/osc.ko ffffffffc1a95a00 lov ffffffffc1a3d000 552960 /tmp/crash-anaysis.kbpBZ/modules/lov.ko ffffffffc1b0fb80 mdc ffffffffc1ac5000 466944 /tmp/crash-anaysis.kbpBZ/modules/mdc.ko ffffffffc1b54000 mgc ffffffffc1b38000 184320 /tmp/crash-anaysis.kbpBZ/modules/mgc.ko ffffffffc1b875c0 obdecho ffffffffc1b66000 225280 /tmp/crash-anaysis.kbpBZ/modules/obdecho.ko ffffffffc1c58340 lfsck ffffffffc1b9e000 1081344 /tmp/crash-anaysis.kbpBZ/modules/lfsck.ko ffffffffc1d27240 lquota ffffffffc1ca7000 786432 /tmp/crash-anaysis.kbpBZ/modules/lquota.ko ffffffffc1dd3b80 osd_zfs ffffffffc1d68000 659456 /tmp/crash-anaysis.kbpBZ/modules/osd_zfs.ko ffffffffc1e6d400 mgs ffffffffc1e0a000 626688 /tmp/crash-anaysis.kbpBZ/modules/mgs.ko ffffffffc1f1f080 mdd ffffffffc1ea4000 745472 /tmp/crash-anaysis.kbpBZ/modules/mdd.ko ffffffffc2069900 mdt ffffffffc1f5b000 1654784 /tmp/crash-anaysis.kbpBZ/modules/mdt.ko ffffffffc219b540 lod ffffffffc20f0000 1056768 /tmp/crash-anaysis.kbpBZ/modules/lod.ko ffffffffc2261e40 ofd ffffffffc21f3000 688128 /tmp/crash-anaysis.kbpBZ/modules/ofd.ko ffffffffc22f7f80 osp ffffffffc229c000 573440 /tmp/crash-anaysis.kbpBZ/modules/osp.ko ffffffffc245d4c0 lustre ffffffffc2329000 1908736 /tmp/crash-anaysis.kbpBZ/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, 0xffff97a68a0f6d68) 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 137 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, 0xffff97a6864218a8) 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 134 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, 0xffff97a687a3b528) 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 121 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, 0xffff97a68835d2e8) 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 129 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.kbpBZ/lustre.bin