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.sOKHN/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68883/testresults/sanity-compr-special3-zfs-rocky8.10_x86_64-rocky8.10_x86_64-retry1/oleg305-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 13:31:17 EDT 2026 UPTIME: 00:06:30 LOAD AVERAGE: 1.34, 1.23, 0.63 TASKS: 351 NODENAME: oleg305-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: 6528 COMMAND: "dp_sync_taskq" TASK: ffff9e6837bb4f80 [THREAD_INFO: ffff9e6837bb4f80] 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_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 intel_rapl_msr 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 crc32_pclmul module mod: cannot find or load object file for ata_generic module mod: cannot find or load object file for ghash_clmulni_intel module mod: cannot find or load object file for crct10dif_pclmul 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 pcspkr module mod: cannot find or load object file for dns_resolver 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 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 ffffffffc06f0740 libcfs ffffffffc06d0000 225280 /tmp/crash-anaysis.sOKHN/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc11123c0 lnet ffffffffc1037000 1490944 /tmp/crash-anaysis.sOKHN/modules/lnet.ko ffffffffc11cd900 ksocklnd ffffffffc11a4000 270336 /tmp/crash-anaysis.sOKHN/modules/ksocklnd.ko ffffffffc132e0c0 obdclass ffffffffc11e7000 4415488 /tmp/crash-anaysis.sOKHN/modules/obdclass.ko ffffffffc18aa0c0 ptlrpc ffffffffc161e000 4173824 /tmp/crash-anaysis.sOKHN/modules/ptlrpc.ko ffffffffc1a68880 ptlrpc_gss ffffffffc1a1a000 524288 /tmp/crash-anaysis.sOKHN/modules/ptlrpc_gss.ko ffffffffc1aadc80 fld ffffffffc1a9b000 126976 /tmp/crash-anaysis.sOKHN/modules/fld.ko ffffffffc1acdac0 fid ffffffffc1abb000 126976 /tmp/crash-anaysis.sOKHN/modules/fid.ko ffffffffc1aed740 ec ffffffffc1adb000 81920 /tmp/crash-anaysis.sOKHN/modules/ec.ko ffffffffc1b2d080 lmv ffffffffc1af0000 372736 /tmp/crash-anaysis.sOKHN/modules/lmv.ko ffffffffc1bce480 osc ffffffffc1b4c000 790528 /tmp/crash-anaysis.sOKHN/modules/osc.ko ffffffffc1c66b00 lov ffffffffc1c0e000 552960 /tmp/crash-anaysis.sOKHN/modules/lov.ko ffffffffc1ce0b80 mdc ffffffffc1c96000 466944 /tmp/crash-anaysis.sOKHN/modules/mdc.ko ffffffffc1d25000 mgc ffffffffc1d09000 184320 /tmp/crash-anaysis.sOKHN/modules/mgc.ko ffffffffc1d585c0 obdecho ffffffffc1d37000 225280 /tmp/crash-anaysis.sOKHN/modules/obdecho.ko ffffffffc1e29340 lfsck ffffffffc1d6f000 1081344 /tmp/crash-anaysis.sOKHN/modules/lfsck.ko ffffffffc1ef8240 lquota ffffffffc1e78000 786432 /tmp/crash-anaysis.sOKHN/modules/lquota.ko ffffffffc1fa4b80 osd_zfs ffffffffc1f39000 659456 /tmp/crash-anaysis.sOKHN/modules/osd_zfs.ko ffffffffc203e400 mgs ffffffffc1fdb000 626688 /tmp/crash-anaysis.sOKHN/modules/mgs.ko ffffffffc20f00c0 mdd ffffffffc2075000 745472 /tmp/crash-anaysis.sOKHN/modules/mdd.ko ffffffffc223a900 mdt ffffffffc212c000 1654784 /tmp/crash-anaysis.sOKHN/modules/mdt.ko ffffffffc236e900 lod ffffffffc22c1000 1064960 /tmp/crash-anaysis.sOKHN/modules/lod.ko ffffffffc2434e40 ofd ffffffffc23c6000 688128 /tmp/crash-anaysis.sOKHN/modules/ofd.ko ffffffffc24caf80 osp ffffffffc246f000 573440 /tmp/crash-anaysis.sOKHN/modules/osp.ko ffffffffc2632780 lustre ffffffffc24fc000 1925120 /tmp/crash-anaysis.sOKHN/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, 0xffff9e68193a65a8) 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 125 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, 0xffff9e682043e068) 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 136 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, 0xffff9e6811d53d08) 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 124 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, 0xffff9e6810a10628) 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 131 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 516 total debug pages from 4 CPUs to /tmp/crash-anaysis.sOKHN/lustre.bin