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.wnfwJ/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68898/testresults/sanity-compr-special8-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg416-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 10:57:46 EDT 2026 UPTIME: 00:06:42 LOAD AVERAGE: 1.96, 1.45, 0.71 TASKS: 402 NODENAME: oleg416-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: 7916 COMMAND: "dp_sync_taskq" TASK: ffff9fdcbb87a7c0 [THREAD_INFO: ffff9fdcbb87a7c0] 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 serio_raw 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 crct10dif_pclmul module mod: cannot find or load object file for ata_generic module mod: cannot find or load object file for rapl 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 pcspkr 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 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 ffffffffc05e6740 libcfs ffffffffc05c6000 225280 /tmp/crash-anaysis.wnfwJ/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc10083c0 lnet ffffffffc0f2d000 1490944 /tmp/crash-anaysis.wnfwJ/modules/lnet.ko ffffffffc10c3900 ksocklnd ffffffffc109a000 270336 /tmp/crash-anaysis.wnfwJ/modules/ksocklnd.ko ffffffffc12240c0 obdclass ffffffffc10dd000 4415488 /tmp/crash-anaysis.wnfwJ/modules/obdclass.ko ffffffffc17a00c0 ptlrpc ffffffffc1514000 4173824 /tmp/crash-anaysis.wnfwJ/modules/ptlrpc.ko ffffffffc195e880 ptlrpc_gss ffffffffc1910000 524288 /tmp/crash-anaysis.wnfwJ/modules/ptlrpc_gss.ko ffffffffc19a3c80 fld ffffffffc1991000 126976 /tmp/crash-anaysis.wnfwJ/modules/fld.ko ffffffffc19c3ac0 fid ffffffffc19b1000 126976 /tmp/crash-anaysis.wnfwJ/modules/fid.ko ffffffffc19e3740 ec ffffffffc19d1000 81920 /tmp/crash-anaysis.wnfwJ/modules/ec.ko ffffffffc1a23080 lmv ffffffffc19e6000 372736 /tmp/crash-anaysis.wnfwJ/modules/lmv.ko ffffffffc1ac4380 osc ffffffffc1a42000 790528 /tmp/crash-anaysis.wnfwJ/modules/osc.ko ffffffffc1b5ca00 lov ffffffffc1b04000 552960 /tmp/crash-anaysis.wnfwJ/modules/lov.ko ffffffffc1bd6b80 mdc ffffffffc1b8c000 466944 /tmp/crash-anaysis.wnfwJ/modules/mdc.ko ffffffffc1c1b000 mgc ffffffffc1bff000 184320 /tmp/crash-anaysis.wnfwJ/modules/mgc.ko ffffffffc1c4e5c0 obdecho ffffffffc1c2d000 225280 /tmp/crash-anaysis.wnfwJ/modules/obdecho.ko ffffffffc1d1f340 lfsck ffffffffc1c65000 1081344 /tmp/crash-anaysis.wnfwJ/modules/lfsck.ko ffffffffc1dee240 lquota ffffffffc1d6e000 786432 /tmp/crash-anaysis.wnfwJ/modules/lquota.ko ffffffffc1e9ab80 osd_zfs ffffffffc1e2f000 659456 /tmp/crash-anaysis.wnfwJ/modules/osd_zfs.ko ffffffffc1f34400 mgs ffffffffc1ed1000 626688 /tmp/crash-anaysis.wnfwJ/modules/mgs.ko ffffffffc1fe6080 mdd ffffffffc1f6b000 745472 /tmp/crash-anaysis.wnfwJ/modules/mdd.ko ffffffffc2130900 mdt ffffffffc2022000 1654784 /tmp/crash-anaysis.wnfwJ/modules/mdt.ko ffffffffc2262540 lod ffffffffc21b7000 1056768 /tmp/crash-anaysis.wnfwJ/modules/lod.ko ffffffffc2328e00 ofd ffffffffc22ba000 688128 /tmp/crash-anaysis.wnfwJ/modules/ofd.ko ffffffffc23bef80 osp ffffffffc2363000 573440 /tmp/crash-anaysis.wnfwJ/modules/osp.ko ffffffffc25244c0 lustre ffffffffc23f0000 1908736 /tmp/crash-anaysis.wnfwJ/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, 0xffff9fdcb12a1628) 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 215 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, 0xffff9fdc98414e28) 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 202 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, 0xffff9fdc926d98c8) 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 243 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, 0xffff9fdc9842a428) 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 193 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 853 total debug pages from 4 CPUs to /tmp/crash-anaysis.wnfwJ/lustre.bin