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.YjQRB/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68907/testresults/sanity-compr-special9-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg345-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 10:45:17 EDT 2026 UPTIME: 00:05:05 LOAD AVERAGE: 2.03, 1.26, 0.56 TASKS: 355 NODENAME: oleg345-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: 6506 COMMAND: "dp_sync_taskq" TASK: ffff9fa6bc3f4f80 [THREAD_INFO: ffff9fa6bc3f4f80] 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 crct10dif_pclmul 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 pcspkr module mod: cannot find or load object file for rapl module mod: cannot find or load object file for serio_raw 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 crc32c_intel module mod: cannot find or load object file for squashfs 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 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 ffffffffc058bc80 fld ffffffffc0579000 126976 /tmp/crash-anaysis.YjQRB/modules/fld.ko ffffffffc05ab740 ec ffffffffc0599000 81920 /tmp/crash-anaysis.YjQRB/modules/ec.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0efe740 libcfs ffffffffc0ede000 225280 /tmp/crash-anaysis.YjQRB/modules/libcfs.ko ffffffffc0ff13c0 lnet ffffffffc0f16000 1490944 /tmp/crash-anaysis.YjQRB/modules/lnet.ko ffffffffc10ac900 ksocklnd ffffffffc1083000 270336 /tmp/crash-anaysis.YjQRB/modules/ksocklnd.ko ffffffffc120cf80 obdclass ffffffffc10c6000 4415488 /tmp/crash-anaysis.YjQRB/modules/obdclass.ko ffffffffc17890c0 ptlrpc ffffffffc14fd000 4173824 /tmp/crash-anaysis.YjQRB/modules/ptlrpc.ko ffffffffc1947880 ptlrpc_gss ffffffffc18f9000 524288 /tmp/crash-anaysis.YjQRB/modules/ptlrpc_gss.ko ffffffffc198cac0 fid ffffffffc197a000 126976 /tmp/crash-anaysis.YjQRB/modules/fid.ko ffffffffc19d7080 lmv ffffffffc199a000 372736 /tmp/crash-anaysis.YjQRB/modules/lmv.ko ffffffffc1a78200 osc ffffffffc19f6000 790528 /tmp/crash-anaysis.YjQRB/modules/osc.ko ffffffffc1b10a00 lov ffffffffc1ab8000 552960 /tmp/crash-anaysis.YjQRB/modules/lov.ko ffffffffc1b8ab80 mdc ffffffffc1b40000 466944 /tmp/crash-anaysis.YjQRB/modules/mdc.ko ffffffffc1bcf000 mgc ffffffffc1bb3000 184320 /tmp/crash-anaysis.YjQRB/modules/mgc.ko ffffffffc1c025c0 obdecho ffffffffc1be1000 225280 /tmp/crash-anaysis.YjQRB/modules/obdecho.ko ffffffffc1cd3340 lfsck ffffffffc1c19000 1081344 /tmp/crash-anaysis.YjQRB/modules/lfsck.ko ffffffffc1da2240 lquota ffffffffc1d22000 786432 /tmp/crash-anaysis.YjQRB/modules/lquota.ko ffffffffc1e4dac0 osd_zfs ffffffffc1de3000 655360 /tmp/crash-anaysis.YjQRB/modules/osd_zfs.ko ffffffffc1ee7400 mgs ffffffffc1e84000 626688 /tmp/crash-anaysis.YjQRB/modules/mgs.ko ffffffffc1f99080 mdd ffffffffc1f1e000 745472 /tmp/crash-anaysis.YjQRB/modules/mdd.ko ffffffffc20e3940 mdt ffffffffc1fd5000 1654784 /tmp/crash-anaysis.YjQRB/modules/mdt.ko ffffffffc2215480 lod ffffffffc216a000 1052672 /tmp/crash-anaysis.YjQRB/modules/lod.ko ffffffffc22dbe40 ofd ffffffffc226c000 692224 /tmp/crash-anaysis.YjQRB/modules/ofd.ko ffffffffc2371f80 osp ffffffffc2316000 573440 /tmp/crash-anaysis.YjQRB/modules/osp.ko ffffffffc24d76c0 lustre ffffffffc23a3000 1912832 /tmp/crash-anaysis.YjQRB/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, 0xffff9fa690a3f7a8) 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, 0xffff9fa683042048) 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 103 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, 0xffff9fa687845ee8) 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 120 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, 0xffff9fa6830228a8) 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 119 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 467 total debug pages from 4 CPUs to /tmp/crash-anaysis.YjQRB/lustre.bin