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.y89Oz/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68904/testresults/sanity-special9-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg216-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 11:46:18 EDT 2026 UPTIME: 00:06:04 LOAD AVERAGE: 1.27, 1.24, 0.60 TASKS: 353 NODENAME: oleg216-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: ffff9cb3c8608000 [THREAD_INFO: ffff9cb3c8608000] 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 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 crct10dif_pclmul module mod: cannot find or load object file for intel_rapl_msr module mod: cannot find or load object file for pcspkr 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 i2c_piix4 module mod: cannot find or load object file for dns_resolver 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 sb_edac module mod: cannot find or load object file for rpcsec_gss_krb5 module mod: cannot find or load object file for rapl 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 ffffffffc079cc80 fld ffffffffc078a000 126976 /tmp/crash-anaysis.y89Oz/modules/fld.ko ffffffffc07bc740 ec ffffffffc07aa000 81920 /tmp/crash-anaysis.y89Oz/modules/ec.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc110f740 libcfs ffffffffc10ef000 225280 /tmp/crash-anaysis.y89Oz/modules/libcfs.ko ffffffffc12023c0 lnet ffffffffc1127000 1490944 /tmp/crash-anaysis.y89Oz/modules/lnet.ko ffffffffc12bd900 ksocklnd ffffffffc1294000 270336 /tmp/crash-anaysis.y89Oz/modules/ksocklnd.ko ffffffffc141dfc0 obdclass ffffffffc12d7000 4415488 /tmp/crash-anaysis.y89Oz/modules/obdclass.ko ffffffffc199a0c0 ptlrpc ffffffffc170e000 4173824 /tmp/crash-anaysis.y89Oz/modules/ptlrpc.ko ffffffffc1b58880 ptlrpc_gss ffffffffc1b0a000 524288 /tmp/crash-anaysis.y89Oz/modules/ptlrpc_gss.ko ffffffffc1b9dac0 fid ffffffffc1b8b000 126976 /tmp/crash-anaysis.y89Oz/modules/fid.ko ffffffffc1be8080 lmv ffffffffc1bab000 372736 /tmp/crash-anaysis.y89Oz/modules/lmv.ko ffffffffc1c89300 osc ffffffffc1c07000 790528 /tmp/crash-anaysis.y89Oz/modules/osc.ko ffffffffc1d219c0 lov ffffffffc1cc9000 552960 /tmp/crash-anaysis.y89Oz/modules/lov.ko ffffffffc1d9bb80 mdc ffffffffc1d51000 466944 /tmp/crash-anaysis.y89Oz/modules/mdc.ko ffffffffc1de0000 mgc ffffffffc1dc4000 184320 /tmp/crash-anaysis.y89Oz/modules/mgc.ko ffffffffc1e135c0 obdecho ffffffffc1df2000 225280 /tmp/crash-anaysis.y89Oz/modules/obdecho.ko ffffffffc1ee4340 lfsck ffffffffc1e2a000 1081344 /tmp/crash-anaysis.y89Oz/modules/lfsck.ko ffffffffc1fb3240 lquota ffffffffc1f33000 786432 /tmp/crash-anaysis.y89Oz/modules/lquota.ko ffffffffc205fb80 osd_zfs ffffffffc1ff4000 659456 /tmp/crash-anaysis.y89Oz/modules/osd_zfs.ko ffffffffc20f9400 mgs ffffffffc2096000 626688 /tmp/crash-anaysis.y89Oz/modules/mgs.ko ffffffffc21ab080 mdd ffffffffc2130000 745472 /tmp/crash-anaysis.y89Oz/modules/mdd.ko ffffffffc22f5940 mdt ffffffffc21e7000 1654784 /tmp/crash-anaysis.y89Oz/modules/mdt.ko ffffffffc2427480 lod ffffffffc237c000 1056768 /tmp/crash-anaysis.y89Oz/modules/lod.ko ffffffffc24eee40 ofd ffffffffc247f000 692224 /tmp/crash-anaysis.y89Oz/modules/ofd.ko ffffffffc2584f80 osp ffffffffc2529000 573440 /tmp/crash-anaysis.y89Oz/modules/osp.ko ffffffffc26ea4c0 lustre ffffffffc25b6000 1908736 /tmp/crash-anaysis.y89Oz/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, 0xffff9cb3c2f5b968) 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 143 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, 0xffff9cb3ca66d948) 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 137 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, 0xffff9cb3c9100c48) 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 139 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, 0xffff9cb3c9d798e8) 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 133 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 552 total debug pages from 4 CPUs to /tmp/crash-anaysis.y89Oz/lustre.bin