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.Zwf8w/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68907/testresults/sanity-compr-special7-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg659-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 10:41:39 EDT 2026 UPTIME: 00:05:38 LOAD AVERAGE: 1.96, 1.55, 0.75 TASKS: 343 NODENAME: oleg659-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: 6494 COMMAND: "dp_sync_taskq" TASK: ffff8e2b905127c0 [THREAD_INFO: ffff8e2b905127c0] CPU: 0 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 intel_rapl_msr 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 crc32_pclmul 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 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 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 dns_resolver 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 ffffffffc0597740 libcfs ffffffffc0577000 225280 /tmp/crash-anaysis.Zwf8w/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0fb93c0 lnet ffffffffc0ede000 1490944 /tmp/crash-anaysis.Zwf8w/modules/lnet.ko ffffffffc1074900 ksocklnd ffffffffc104b000 270336 /tmp/crash-anaysis.Zwf8w/modules/ksocklnd.ko ffffffffc11d4f80 obdclass ffffffffc108e000 4415488 /tmp/crash-anaysis.Zwf8w/modules/obdclass.ko ffffffffc17510c0 ptlrpc ffffffffc14c5000 4173824 /tmp/crash-anaysis.Zwf8w/modules/ptlrpc.ko ffffffffc190f880 ptlrpc_gss ffffffffc18c1000 524288 /tmp/crash-anaysis.Zwf8w/modules/ptlrpc_gss.ko ffffffffc1954c80 fld ffffffffc1942000 126976 /tmp/crash-anaysis.Zwf8w/modules/fld.ko ffffffffc1974ac0 fid ffffffffc1962000 126976 /tmp/crash-anaysis.Zwf8w/modules/fid.ko ffffffffc1994740 ec ffffffffc1982000 81920 /tmp/crash-anaysis.Zwf8w/modules/ec.ko ffffffffc19d4080 lmv ffffffffc1997000 372736 /tmp/crash-anaysis.Zwf8w/modules/lmv.ko ffffffffc1a75200 osc ffffffffc19f3000 790528 /tmp/crash-anaysis.Zwf8w/modules/osc.ko ffffffffc1b0da00 lov ffffffffc1ab5000 552960 /tmp/crash-anaysis.Zwf8w/modules/lov.ko ffffffffc1b87b80 mdc ffffffffc1b3d000 466944 /tmp/crash-anaysis.Zwf8w/modules/mdc.ko ffffffffc1bcc000 mgc ffffffffc1bb0000 184320 /tmp/crash-anaysis.Zwf8w/modules/mgc.ko ffffffffc1bff5c0 obdecho ffffffffc1bde000 225280 /tmp/crash-anaysis.Zwf8w/modules/obdecho.ko ffffffffc1cd0340 lfsck ffffffffc1c16000 1081344 /tmp/crash-anaysis.Zwf8w/modules/lfsck.ko ffffffffc1d9f240 lquota ffffffffc1d1f000 786432 /tmp/crash-anaysis.Zwf8w/modules/lquota.ko ffffffffc1e4aac0 osd_zfs ffffffffc1de0000 655360 /tmp/crash-anaysis.Zwf8w/modules/osd_zfs.ko ffffffffc1ee4400 mgs ffffffffc1e81000 626688 /tmp/crash-anaysis.Zwf8w/modules/mgs.ko ffffffffc1f96080 mdd ffffffffc1f1b000 745472 /tmp/crash-anaysis.Zwf8w/modules/mdd.ko ffffffffc20e0940 mdt ffffffffc1fd2000 1654784 /tmp/crash-anaysis.Zwf8w/modules/mdt.ko ffffffffc2212480 lod ffffffffc2167000 1052672 /tmp/crash-anaysis.Zwf8w/modules/lod.ko ffffffffc22d8e40 ofd ffffffffc2269000 692224 /tmp/crash-anaysis.Zwf8w/modules/ofd.ko ffffffffc236ef80 osp ffffffffc2313000 573440 /tmp/crash-anaysis.Zwf8w/modules/osp.ko ffffffffc24d46c0 lustre ffffffffc23a0000 1912832 /tmp/crash-anaysis.Zwf8w/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, 0xffff8e2b863657a8) 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 98 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, 0xffff8e2b82c37cc8) 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 128 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, 0xffff8e2b82af9888) 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 114 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, 0xffff8e2b82bbc288) 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 128 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 468 total debug pages from 4 CPUs to /tmp/crash-anaysis.Zwf8w/lustre.bin