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.2RvmH/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68887/testresults/sanity-compr-special6-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg111-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 13:34:49 EDT 2026 UPTIME: 00:05:50 LOAD AVERAGE: 2.11, 1.55, 0.73 TASKS: 341 NODENAME: oleg111-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: 6487 COMMAND: "dp_sync_taskq" TASK: ffff9d8d73c927c0 [THREAD_INFO: ffff9d8d73c927c0] 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_region_hash 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 crct10dif_pclmul module mod: cannot find or load object file for ata_generic 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 ata_piix module mod: cannot find or load object file for i2c_piix4 module mod: cannot find or load object file for rapl 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 intel_rapl_common module mod: cannot find or load object file for intel_rapl_msr 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 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 ffffffffc05c8c80 fld ffffffffc05b6000 126976 /tmp/crash-anaysis.2RvmH/modules/fld.ko ffffffffc05e8740 ec ffffffffc05d6000 81920 /tmp/crash-anaysis.2RvmH/modules/ec.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0f3d740 libcfs ffffffffc0f1d000 225280 /tmp/crash-anaysis.2RvmH/modules/libcfs.ko ffffffffc10303c0 lnet ffffffffc0f55000 1490944 /tmp/crash-anaysis.2RvmH/modules/lnet.ko ffffffffc10eb900 ksocklnd ffffffffc10c2000 270336 /tmp/crash-anaysis.2RvmH/modules/ksocklnd.ko ffffffffc124c0c0 obdclass ffffffffc1105000 4415488 /tmp/crash-anaysis.2RvmH/modules/obdclass.ko ffffffffc17c80c0 ptlrpc ffffffffc153c000 4173824 /tmp/crash-anaysis.2RvmH/modules/ptlrpc.ko ffffffffc1986880 ptlrpc_gss ffffffffc1938000 524288 /tmp/crash-anaysis.2RvmH/modules/ptlrpc_gss.ko ffffffffc19cbac0 fid ffffffffc19b9000 126976 /tmp/crash-anaysis.2RvmH/modules/fid.ko ffffffffc1a16080 lmv ffffffffc19d9000 372736 /tmp/crash-anaysis.2RvmH/modules/lmv.ko ffffffffc1ab7440 osc ffffffffc1a35000 790528 /tmp/crash-anaysis.2RvmH/modules/osc.ko ffffffffc1b4fa80 lov ffffffffc1af7000 552960 /tmp/crash-anaysis.2RvmH/modules/lov.ko ffffffffc1bc9b80 mdc ffffffffc1b7f000 466944 /tmp/crash-anaysis.2RvmH/modules/mdc.ko ffffffffc1c0e000 mgc ffffffffc1bf2000 184320 /tmp/crash-anaysis.2RvmH/modules/mgc.ko ffffffffc1c415c0 obdecho ffffffffc1c20000 225280 /tmp/crash-anaysis.2RvmH/modules/obdecho.ko ffffffffc1d12340 lfsck ffffffffc1c58000 1081344 /tmp/crash-anaysis.2RvmH/modules/lfsck.ko ffffffffc1de1240 lquota ffffffffc1d61000 786432 /tmp/crash-anaysis.2RvmH/modules/lquota.ko ffffffffc1e8db80 osd_zfs ffffffffc1e22000 659456 /tmp/crash-anaysis.2RvmH/modules/osd_zfs.ko ffffffffc1f27400 mgs ffffffffc1ec4000 626688 /tmp/crash-anaysis.2RvmH/modules/mgs.ko ffffffffc1fd90c0 mdd ffffffffc1f5e000 745472 /tmp/crash-anaysis.2RvmH/modules/mdd.ko ffffffffc2123900 mdt ffffffffc2015000 1654784 /tmp/crash-anaysis.2RvmH/modules/mdt.ko ffffffffc2255680 lod ffffffffc21aa000 1056768 /tmp/crash-anaysis.2RvmH/modules/lod.ko ffffffffc231be40 ofd ffffffffc22ad000 688128 /tmp/crash-anaysis.2RvmH/modules/ofd.ko ffffffffc23b1f80 osp ffffffffc2356000 573440 /tmp/crash-anaysis.2RvmH/modules/osp.ko ffffffffc2518580 lustre ffffffffc23e3000 1912832 /tmp/crash-anaysis.2RvmH/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, 0xffff9d8d60c5e188) 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 126 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, 0xffff9d8d58018368) 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 162 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, 0xffff9d8d5517b5e8) 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 143 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, 0xffff9d8d479cac08) 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 130 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 561 total debug pages from 4 CPUs to /tmp/crash-anaysis.2RvmH/lustre.bin