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.hJv6l/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68890/testresults/sanity-compr-special9-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg649-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 13:23:58 EDT 2026 UPTIME: 00:06:46 LOAD AVERAGE: 0.97, 1.08, 0.58 TASKS: 350 NODENAME: oleg649-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: 6485 COMMAND: "dp_sync_taskq" TASK: ffff9b8285794f80 [THREAD_INFO: ffff9b8285794f80] 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_region_hash module mod: cannot find or load object file for dm_log 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 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 rapl module mod: cannot find or load object file for serio_raw module mod: cannot find or load object file for ata_piix 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 intel_rapl_msr 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 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 ffffffffc05e3740 libcfs ffffffffc05c3000 225280 /tmp/crash-anaysis.hJv6l/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc10053c0 lnet ffffffffc0f2a000 1490944 /tmp/crash-anaysis.hJv6l/modules/lnet.ko ffffffffc10c0900 ksocklnd ffffffffc1097000 270336 /tmp/crash-anaysis.hJv6l/modules/ksocklnd.ko ffffffffc12210c0 obdclass ffffffffc10da000 4415488 /tmp/crash-anaysis.hJv6l/modules/obdclass.ko ffffffffc179d0c0 ptlrpc ffffffffc1511000 4173824 /tmp/crash-anaysis.hJv6l/modules/ptlrpc.ko ffffffffc195b880 ptlrpc_gss ffffffffc190d000 524288 /tmp/crash-anaysis.hJv6l/modules/ptlrpc_gss.ko ffffffffc19a0c80 fld ffffffffc198e000 126976 /tmp/crash-anaysis.hJv6l/modules/fld.ko ffffffffc19c0ac0 fid ffffffffc19ae000 126976 /tmp/crash-anaysis.hJv6l/modules/fid.ko ffffffffc19e0740 ec ffffffffc19ce000 81920 /tmp/crash-anaysis.hJv6l/modules/ec.ko ffffffffc1a20080 lmv ffffffffc19e3000 372736 /tmp/crash-anaysis.hJv6l/modules/lmv.ko ffffffffc1ac1380 osc ffffffffc1a3f000 790528 /tmp/crash-anaysis.hJv6l/modules/osc.ko ffffffffc1b59a00 lov ffffffffc1b01000 552960 /tmp/crash-anaysis.hJv6l/modules/lov.ko ffffffffc1bd3b80 mdc ffffffffc1b89000 466944 /tmp/crash-anaysis.hJv6l/modules/mdc.ko ffffffffc1c18000 mgc ffffffffc1bfc000 184320 /tmp/crash-anaysis.hJv6l/modules/mgc.ko ffffffffc1c4b5c0 obdecho ffffffffc1c2a000 225280 /tmp/crash-anaysis.hJv6l/modules/obdecho.ko ffffffffc1d1c340 lfsck ffffffffc1c62000 1081344 /tmp/crash-anaysis.hJv6l/modules/lfsck.ko ffffffffc1deb240 lquota ffffffffc1d6b000 786432 /tmp/crash-anaysis.hJv6l/modules/lquota.ko ffffffffc1e97b80 osd_zfs ffffffffc1e2c000 659456 /tmp/crash-anaysis.hJv6l/modules/osd_zfs.ko ffffffffc1f31400 mgs ffffffffc1ece000 626688 /tmp/crash-anaysis.hJv6l/modules/mgs.ko ffffffffc1fe3080 mdd ffffffffc1f68000 745472 /tmp/crash-anaysis.hJv6l/modules/mdd.ko ffffffffc212d900 mdt ffffffffc201f000 1654784 /tmp/crash-anaysis.hJv6l/modules/mdt.ko ffffffffc225f540 lod ffffffffc21b4000 1056768 /tmp/crash-anaysis.hJv6l/modules/lod.ko ffffffffc2325e40 ofd ffffffffc22b7000 688128 /tmp/crash-anaysis.hJv6l/modules/ofd.ko ffffffffc23bbf80 osp ffffffffc2360000 573440 /tmp/crash-anaysis.hJv6l/modules/osp.ko ffffffffc25214c0 lustre ffffffffc23ed000 1908736 /tmp/crash-anaysis.hJv6l/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, 0xffff9b82a02df9a8) 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 128 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, 0xffff9b8291c1b0e8) 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 130 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, 0xffff9b82882ca768) 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 100 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, 0xffff9b8284ba9e08) 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 141 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 499 total debug pages from 4 CPUs to /tmp/crash-anaysis.hJv6l/lustre.bin