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.WBJsw/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68883/testresults/sanity-compr-special3-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg306-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 13:29:27 EDT 2026 UPTIME: 00:06:47 LOAD AVERAGE: 2.15, 1.66, 0.85 TASKS: 355 NODENAME: oleg306-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: 6504 COMMAND: "dp_sync_taskq" TASK: ffff8cc0c5284f80 [THREAD_INFO: ffff8cc0c5284f80] CPU: 2 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_mirror 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 libata 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 pcspkr module mod: cannot find or load object file for rapl 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 dns_resolver module mod: cannot find or load object file for serio_raw module mod: cannot find or load object file for crct10dif_pclmul 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 i2c_piix4 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 ffffffffc043ec80 fld ffffffffc042c000 126976 /tmp/crash-anaysis.WBJsw/modules/fld.ko ffffffffc045e740 ec ffffffffc044c000 81920 /tmp/crash-anaysis.WBJsw/modules/ec.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0db1740 libcfs ffffffffc0d91000 225280 /tmp/crash-anaysis.WBJsw/modules/libcfs.ko ffffffffc0ea43c0 lnet ffffffffc0dc9000 1490944 /tmp/crash-anaysis.WBJsw/modules/lnet.ko ffffffffc0f5f900 ksocklnd ffffffffc0f36000 270336 /tmp/crash-anaysis.WBJsw/modules/ksocklnd.ko ffffffffc10c00c0 obdclass ffffffffc0f79000 4415488 /tmp/crash-anaysis.WBJsw/modules/obdclass.ko ffffffffc163c0c0 ptlrpc ffffffffc13b0000 4173824 /tmp/crash-anaysis.WBJsw/modules/ptlrpc.ko ffffffffc17fa880 ptlrpc_gss ffffffffc17ac000 524288 /tmp/crash-anaysis.WBJsw/modules/ptlrpc_gss.ko ffffffffc183fac0 fid ffffffffc182d000 126976 /tmp/crash-anaysis.WBJsw/modules/fid.ko ffffffffc188a080 lmv ffffffffc184d000 372736 /tmp/crash-anaysis.WBJsw/modules/lmv.ko ffffffffc192b480 osc ffffffffc18a9000 790528 /tmp/crash-anaysis.WBJsw/modules/osc.ko ffffffffc19c3b00 lov ffffffffc196b000 552960 /tmp/crash-anaysis.WBJsw/modules/lov.ko ffffffffc1a3db80 mdc ffffffffc19f3000 466944 /tmp/crash-anaysis.WBJsw/modules/mdc.ko ffffffffc1a82000 mgc ffffffffc1a66000 184320 /tmp/crash-anaysis.WBJsw/modules/mgc.ko ffffffffc1ab55c0 obdecho ffffffffc1a94000 225280 /tmp/crash-anaysis.WBJsw/modules/obdecho.ko ffffffffc1b86340 lfsck ffffffffc1acc000 1081344 /tmp/crash-anaysis.WBJsw/modules/lfsck.ko ffffffffc1c55240 lquota ffffffffc1bd5000 786432 /tmp/crash-anaysis.WBJsw/modules/lquota.ko ffffffffc1d01b80 osd_zfs ffffffffc1c96000 659456 /tmp/crash-anaysis.WBJsw/modules/osd_zfs.ko ffffffffc1d9b400 mgs ffffffffc1d38000 626688 /tmp/crash-anaysis.WBJsw/modules/mgs.ko ffffffffc1e4d0c0 mdd ffffffffc1dd2000 745472 /tmp/crash-anaysis.WBJsw/modules/mdd.ko ffffffffc1f97900 mdt ffffffffc1e89000 1654784 /tmp/crash-anaysis.WBJsw/modules/mdt.ko ffffffffc20cb900 lod ffffffffc201e000 1064960 /tmp/crash-anaysis.WBJsw/modules/lod.ko ffffffffc2191e40 ofd ffffffffc2123000 688128 /tmp/crash-anaysis.WBJsw/modules/ofd.ko ffffffffc2227f80 osp ffffffffc21cc000 573440 /tmp/crash-anaysis.WBJsw/modules/osp.ko ffffffffc238f780 lustre ffffffffc2259000 1925120 /tmp/crash-anaysis.WBJsw/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, 0xffff8cc0c4defd68) 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 160 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, 0xffff8cc0d7a23b28) 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 118 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, 0xffff8cc0ca913508) 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 126 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, 0xffff8cc0c52953c8) 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 116 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 520 total debug pages from 4 CPUs to /tmp/crash-anaysis.WBJsw/lustre.bin