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.wuQyt/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68883/testresults/sanity-compr-special9-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg339-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 13:28:10 EDT 2026 UPTIME: 00:06:21 LOAD AVERAGE: 2.00, 1.36, 0.63 TASKS: 399 NODENAME: oleg339-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: 7903 COMMAND: "dp_sync_taskq" TASK: ffff889181b88000 [THREAD_INFO: ffff889181b88000] 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_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 ata_generic module mod: cannot find or load object file for i2c_piix4 module mod: cannot find or load object file for ata_piix module mod: cannot find or load object file for intel_rapl_msr module mod: cannot find or load object file for pcspkr module mod: cannot find or load object file for crct10dif_pclmul 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 intel_rapl_common 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 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 ffffffffc07fe740 libcfs ffffffffc07de000 225280 /tmp/crash-anaysis.wuQyt/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc12203c0 lnet ffffffffc1145000 1490944 /tmp/crash-anaysis.wuQyt/modules/lnet.ko ffffffffc12db900 ksocklnd ffffffffc12b2000 270336 /tmp/crash-anaysis.wuQyt/modules/ksocklnd.ko ffffffffc143c0c0 obdclass ffffffffc12f5000 4415488 /tmp/crash-anaysis.wuQyt/modules/obdclass.ko ffffffffc19b80c0 ptlrpc ffffffffc172c000 4173824 /tmp/crash-anaysis.wuQyt/modules/ptlrpc.ko ffffffffc1b76880 ptlrpc_gss ffffffffc1b28000 524288 /tmp/crash-anaysis.wuQyt/modules/ptlrpc_gss.ko ffffffffc1bbbc80 fld ffffffffc1ba9000 126976 /tmp/crash-anaysis.wuQyt/modules/fld.ko ffffffffc1bdbac0 fid ffffffffc1bc9000 126976 /tmp/crash-anaysis.wuQyt/modules/fid.ko ffffffffc1bfb740 ec ffffffffc1be9000 81920 /tmp/crash-anaysis.wuQyt/modules/ec.ko ffffffffc1c3b080 lmv ffffffffc1bfe000 372736 /tmp/crash-anaysis.wuQyt/modules/lmv.ko ffffffffc1cdc480 osc ffffffffc1c5a000 790528 /tmp/crash-anaysis.wuQyt/modules/osc.ko ffffffffc1d74b00 lov ffffffffc1d1c000 552960 /tmp/crash-anaysis.wuQyt/modules/lov.ko ffffffffc1deeb80 mdc ffffffffc1da4000 466944 /tmp/crash-anaysis.wuQyt/modules/mdc.ko ffffffffc1e33000 mgc ffffffffc1e17000 184320 /tmp/crash-anaysis.wuQyt/modules/mgc.ko ffffffffc1e665c0 obdecho ffffffffc1e45000 225280 /tmp/crash-anaysis.wuQyt/modules/obdecho.ko ffffffffc1f37340 lfsck ffffffffc1e7d000 1081344 /tmp/crash-anaysis.wuQyt/modules/lfsck.ko ffffffffc2006240 lquota ffffffffc1f86000 786432 /tmp/crash-anaysis.wuQyt/modules/lquota.ko ffffffffc20b2b80 osd_zfs ffffffffc2047000 659456 /tmp/crash-anaysis.wuQyt/modules/osd_zfs.ko ffffffffc214c400 mgs ffffffffc20e9000 626688 /tmp/crash-anaysis.wuQyt/modules/mgs.ko ffffffffc21fe0c0 mdd ffffffffc2183000 745472 /tmp/crash-anaysis.wuQyt/modules/mdd.ko ffffffffc2348900 mdt ffffffffc223a000 1654784 /tmp/crash-anaysis.wuQyt/modules/mdt.ko ffffffffc247c900 lod ffffffffc23cf000 1064960 /tmp/crash-anaysis.wuQyt/modules/lod.ko ffffffffc2542e40 ofd ffffffffc24d4000 688128 /tmp/crash-anaysis.wuQyt/modules/ofd.ko ffffffffc25d8f80 osp ffffffffc257d000 573440 /tmp/crash-anaysis.wuQyt/modules/osp.ko ffffffffc2740780 lustre ffffffffc260a000 1925120 /tmp/crash-anaysis.wuQyt/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, 0xffff88915819d688) 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 243 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, 0xffff889151866a28) 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 218 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, 0xffff889147fce368) 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 238 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, 0xffff8891451044a8) 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 198 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 897 total debug pages from 4 CPUs to /tmp/crash-anaysis.wuQyt/lustre.bin