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.DdKKn/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68899/testresults/sanity-compr-special8-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg308-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 11:01:25 EDT 2026 UPTIME: 00:05:10 LOAD AVERAGE: 1.73, 1.07, 0.48 TASKS: 408 NODENAME: oleg308-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: 7911 COMMAND: "dp_sync_taskq" TASK: ffff9121414c0000 [THREAD_INFO: ffff9121414c0000] 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 pcspkr 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 intel_rapl_msr 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 dns_resolver 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 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 ffffffffc061ac80 fld ffffffffc0608000 126976 /tmp/crash-anaysis.DdKKn/modules/fld.ko ffffffffc063a740 ec ffffffffc0628000 81920 /tmp/crash-anaysis.DdKKn/modules/ec.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0f8d740 libcfs ffffffffc0f6d000 225280 /tmp/crash-anaysis.DdKKn/modules/libcfs.ko ffffffffc10803c0 lnet ffffffffc0fa5000 1490944 /tmp/crash-anaysis.DdKKn/modules/lnet.ko ffffffffc113b900 ksocklnd ffffffffc1112000 270336 /tmp/crash-anaysis.DdKKn/modules/ksocklnd.ko ffffffffc129c0c0 obdclass ffffffffc1155000 4415488 /tmp/crash-anaysis.DdKKn/modules/obdclass.ko ffffffffc18180c0 ptlrpc ffffffffc158c000 4173824 /tmp/crash-anaysis.DdKKn/modules/ptlrpc.ko ffffffffc19d6880 ptlrpc_gss ffffffffc1988000 524288 /tmp/crash-anaysis.DdKKn/modules/ptlrpc_gss.ko ffffffffc1a1bac0 fid ffffffffc1a09000 126976 /tmp/crash-anaysis.DdKKn/modules/fid.ko ffffffffc1a66080 lmv ffffffffc1a29000 372736 /tmp/crash-anaysis.DdKKn/modules/lmv.ko ffffffffc1b07340 osc ffffffffc1a85000 790528 /tmp/crash-anaysis.DdKKn/modules/osc.ko ffffffffc1b9fa00 lov ffffffffc1b47000 552960 /tmp/crash-anaysis.DdKKn/modules/lov.ko ffffffffc1c19b80 mdc ffffffffc1bcf000 466944 /tmp/crash-anaysis.DdKKn/modules/mdc.ko ffffffffc1c5e000 mgc ffffffffc1c42000 184320 /tmp/crash-anaysis.DdKKn/modules/mgc.ko ffffffffc1c915c0 obdecho ffffffffc1c70000 225280 /tmp/crash-anaysis.DdKKn/modules/obdecho.ko ffffffffc1d62340 lfsck ffffffffc1ca8000 1081344 /tmp/crash-anaysis.DdKKn/modules/lfsck.ko ffffffffc1e31240 lquota ffffffffc1db1000 786432 /tmp/crash-anaysis.DdKKn/modules/lquota.ko ffffffffc1eddb80 osd_zfs ffffffffc1e72000 659456 /tmp/crash-anaysis.DdKKn/modules/osd_zfs.ko ffffffffc1f77400 mgs ffffffffc1f14000 626688 /tmp/crash-anaysis.DdKKn/modules/mgs.ko ffffffffc2029080 mdd ffffffffc1fae000 745472 /tmp/crash-anaysis.DdKKn/modules/mdd.ko ffffffffc2173900 mdt ffffffffc2065000 1654784 /tmp/crash-anaysis.DdKKn/modules/mdt.ko ffffffffc22a5540 lod ffffffffc21fa000 1056768 /tmp/crash-anaysis.DdKKn/modules/lod.ko ffffffffc236be00 ofd ffffffffc22fd000 688128 /tmp/crash-anaysis.DdKKn/modules/ofd.ko ffffffffc2401f80 osp ffffffffc23a6000 573440 /tmp/crash-anaysis.DdKKn/modules/osp.ko ffffffffc25674c0 lustre ffffffffc2433000 1908736 /tmp/crash-anaysis.DdKKn/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, 0xffff91210636f0c8) 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 151 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, 0xffff9121032d57e8) 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 236 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, 0xffff912104f54da8) 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 232 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, 0xffff9121031cf728) 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 178 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 797 total debug pages from 4 CPUs to /tmp/crash-anaysis.DdKKn/lustre.bin