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.ENZpQ/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68907/testresults/sanity-compr-special1-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg655-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 10:47:01 EDT 2026 UPTIME: 00:05:41 LOAD AVERAGE: 1.83, 1.47, 0.68 TASKS: 402 NODENAME: oleg655-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: 7897 COMMAND: "dp_sync_taskq" TASK: ffff9e3fefde4f80 [THREAD_INFO: ffff9e3fefde4f80] 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 libata module mod: cannot find or load object file for ghash_clmulni_intel 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 intel_rapl_msr module mod: cannot find or load object file for dns_resolver 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 sb_edac module mod: cannot find or load object file for rapl 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 nfsv4 module mod: cannot find or load object file for auth_rpcgss module MODULE NAME BASE SIZE OBJECT FILE ffffffffc0556c80 fld ffffffffc0544000 126976 /tmp/crash-anaysis.ENZpQ/modules/fld.ko ffffffffc0576740 ec ffffffffc0564000 81920 /tmp/crash-anaysis.ENZpQ/modules/ec.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0ec9740 libcfs ffffffffc0ea9000 225280 /tmp/crash-anaysis.ENZpQ/modules/libcfs.ko ffffffffc0fbc3c0 lnet ffffffffc0ee1000 1490944 /tmp/crash-anaysis.ENZpQ/modules/lnet.ko ffffffffc1077900 ksocklnd ffffffffc104e000 270336 /tmp/crash-anaysis.ENZpQ/modules/ksocklnd.ko ffffffffc11d7f80 obdclass ffffffffc1091000 4415488 /tmp/crash-anaysis.ENZpQ/modules/obdclass.ko ffffffffc17540c0 ptlrpc ffffffffc14c8000 4173824 /tmp/crash-anaysis.ENZpQ/modules/ptlrpc.ko ffffffffc1912880 ptlrpc_gss ffffffffc18c4000 524288 /tmp/crash-anaysis.ENZpQ/modules/ptlrpc_gss.ko ffffffffc1957ac0 fid ffffffffc1945000 126976 /tmp/crash-anaysis.ENZpQ/modules/fid.ko ffffffffc19a2080 lmv ffffffffc1965000 372736 /tmp/crash-anaysis.ENZpQ/modules/lmv.ko ffffffffc1a43200 osc ffffffffc19c1000 790528 /tmp/crash-anaysis.ENZpQ/modules/osc.ko ffffffffc1adba00 lov ffffffffc1a83000 552960 /tmp/crash-anaysis.ENZpQ/modules/lov.ko ffffffffc1b55b80 mdc ffffffffc1b0b000 466944 /tmp/crash-anaysis.ENZpQ/modules/mdc.ko ffffffffc1b9a000 mgc ffffffffc1b7e000 184320 /tmp/crash-anaysis.ENZpQ/modules/mgc.ko ffffffffc1bcd5c0 obdecho ffffffffc1bac000 225280 /tmp/crash-anaysis.ENZpQ/modules/obdecho.ko ffffffffc1c9e340 lfsck ffffffffc1be4000 1081344 /tmp/crash-anaysis.ENZpQ/modules/lfsck.ko ffffffffc1d6d240 lquota ffffffffc1ced000 786432 /tmp/crash-anaysis.ENZpQ/modules/lquota.ko ffffffffc1e18ac0 osd_zfs ffffffffc1dae000 655360 /tmp/crash-anaysis.ENZpQ/modules/osd_zfs.ko ffffffffc1eb2400 mgs ffffffffc1e4f000 626688 /tmp/crash-anaysis.ENZpQ/modules/mgs.ko ffffffffc1f64080 mdd ffffffffc1ee9000 745472 /tmp/crash-anaysis.ENZpQ/modules/mdd.ko ffffffffc20ae940 mdt ffffffffc1fa0000 1654784 /tmp/crash-anaysis.ENZpQ/modules/mdt.ko ffffffffc21e0480 lod ffffffffc2135000 1052672 /tmp/crash-anaysis.ENZpQ/modules/lod.ko ffffffffc22a6e40 ofd ffffffffc2237000 692224 /tmp/crash-anaysis.ENZpQ/modules/ofd.ko ffffffffc233cf80 osp ffffffffc22e1000 573440 /tmp/crash-anaysis.ENZpQ/modules/osp.ko ffffffffc24a26c0 lustre ffffffffc236e000 1912832 /tmp/crash-anaysis.ENZpQ/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, 0xffff9e3fe731eec8) 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 184 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, 0xffff9e3fc2b97308) 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 212 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, 0xffff9e3fc5466d68) 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 204 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, 0xffff9e3fc5d20be8) 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 168 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 768 total debug pages from 4 CPUs to /tmp/crash-anaysis.ENZpQ/lustre.bin