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.Ho2dE/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68898/testresults/sanity-compr-special9-zfs-rocky8.10_x86_64-rocky8.10_x86_64-retry1/oleg354-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 11:01:57 EDT 2026 UPTIME: 00:05:12 LOAD AVERAGE: 1.44, 1.13, 0.51 TASKS: 365 NODENAME: oleg354-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: 6474 COMMAND: "dp_sync_taskq" TASK: ffff95ba46338000 [THREAD_INFO: ffff95ba46338000] 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_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 i2c_piix4 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 intel_rapl_msr module mod: cannot find or load object file for pcspkr 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 intel_rapl_common module MODULE NAME BASE SIZE OBJECT FILE ffffffffc036bc80 fld ffffffffc0359000 126976 /tmp/crash-anaysis.Ho2dE/modules/fld.ko mod: cannot find or load object file for rapl module mod: cannot find or load object file for nfsv4 module mod: cannot find or load object file for auth_rpcgss module mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0ea9740 libcfs ffffffffc0e89000 225280 /tmp/crash-anaysis.Ho2dE/modules/libcfs.ko ffffffffc0f9c3c0 lnet ffffffffc0ec1000 1490944 /tmp/crash-anaysis.Ho2dE/modules/lnet.ko ffffffffc1057900 ksocklnd ffffffffc102e000 270336 /tmp/crash-anaysis.Ho2dE/modules/ksocklnd.ko ffffffffc11b80c0 obdclass ffffffffc1071000 4415488 /tmp/crash-anaysis.Ho2dE/modules/obdclass.ko ffffffffc17340c0 ptlrpc ffffffffc14a8000 4173824 /tmp/crash-anaysis.Ho2dE/modules/ptlrpc.ko ffffffffc18f2880 ptlrpc_gss ffffffffc18a4000 524288 /tmp/crash-anaysis.Ho2dE/modules/ptlrpc_gss.ko ffffffffc1937ac0 fid ffffffffc1925000 126976 /tmp/crash-anaysis.Ho2dE/modules/fid.ko ffffffffc1957740 ec ffffffffc1945000 81920 /tmp/crash-anaysis.Ho2dE/modules/ec.ko ffffffffc1997080 lmv ffffffffc195a000 372736 /tmp/crash-anaysis.Ho2dE/modules/lmv.ko ffffffffc1a38380 osc ffffffffc19b6000 790528 /tmp/crash-anaysis.Ho2dE/modules/osc.ko ffffffffc1ad0a00 lov ffffffffc1a78000 552960 /tmp/crash-anaysis.Ho2dE/modules/lov.ko ffffffffc1b4ab80 mdc ffffffffc1b00000 466944 /tmp/crash-anaysis.Ho2dE/modules/mdc.ko ffffffffc1b8f000 mgc ffffffffc1b73000 184320 /tmp/crash-anaysis.Ho2dE/modules/mgc.ko ffffffffc1bc25c0 obdecho ffffffffc1ba1000 225280 /tmp/crash-anaysis.Ho2dE/modules/obdecho.ko ffffffffc1c93340 lfsck ffffffffc1bd9000 1081344 /tmp/crash-anaysis.Ho2dE/modules/lfsck.ko ffffffffc1d62240 lquota ffffffffc1ce2000 786432 /tmp/crash-anaysis.Ho2dE/modules/lquota.ko ffffffffc1e0eb80 osd_zfs ffffffffc1da3000 659456 /tmp/crash-anaysis.Ho2dE/modules/osd_zfs.ko ffffffffc1ea8400 mgs ffffffffc1e45000 626688 /tmp/crash-anaysis.Ho2dE/modules/mgs.ko ffffffffc1f5a080 mdd ffffffffc1edf000 745472 /tmp/crash-anaysis.Ho2dE/modules/mdd.ko ffffffffc20a4900 mdt ffffffffc1f96000 1654784 /tmp/crash-anaysis.Ho2dE/modules/mdt.ko ffffffffc21d6540 lod ffffffffc212b000 1056768 /tmp/crash-anaysis.Ho2dE/modules/lod.ko ffffffffc229ce00 ofd ffffffffc222e000 688128 /tmp/crash-anaysis.Ho2dE/modules/ofd.ko ffffffffc2332f80 osp ffffffffc22d7000 573440 /tmp/crash-anaysis.Ho2dE/modules/osp.ko ffffffffc24984c0 lustre ffffffffc2364000 1908736 /tmp/crash-anaysis.Ho2dE/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, 0xffff95ba47ffe348) 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 109 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, 0xffff95ba58ea49e8) 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 123 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, 0xffff95ba43933a68) 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 140 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, 0xffff95ba43132188) 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 109 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 481 total debug pages from 4 CPUs to /tmp/crash-anaysis.Ho2dE/lustre.bin