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.3l6sr/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68887/testresults/sanity-compr-special5-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg241-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 13:35:38 EDT 2026 UPTIME: 00:06:56 LOAD AVERAGE: 1.58, 1.41, 0.71 TASKS: 410 NODENAME: oleg241-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: 7908 COMMAND: "dp_sync_taskq" TASK: ffff9c544a74cf80 [THREAD_INFO: ffff9c544a74cf80] CPU: 1 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 ata_generic module mod: cannot find or load object file for i2c_piix4 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 crct10dif_pclmul module mod: cannot find or load object file for squashfs module mod: cannot find or load object file for rpcsec_gss_krb5 module mod: cannot find or load object file for sb_edac 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 ffffffffc05f2c80 fld ffffffffc05e0000 126976 /tmp/crash-anaysis.3l6sr/modules/fld.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0f5d740 libcfs ffffffffc0f3d000 225280 /tmp/crash-anaysis.3l6sr/modules/libcfs.ko ffffffffc10503c0 lnet ffffffffc0f75000 1490944 /tmp/crash-anaysis.3l6sr/modules/lnet.ko ffffffffc110b900 ksocklnd ffffffffc10e2000 270336 /tmp/crash-anaysis.3l6sr/modules/ksocklnd.ko ffffffffc126c0c0 obdclass ffffffffc1125000 4415488 /tmp/crash-anaysis.3l6sr/modules/obdclass.ko ffffffffc17e80c0 ptlrpc ffffffffc155c000 4173824 /tmp/crash-anaysis.3l6sr/modules/ptlrpc.ko ffffffffc19a6880 ptlrpc_gss ffffffffc1958000 524288 /tmp/crash-anaysis.3l6sr/modules/ptlrpc_gss.ko ffffffffc19ebac0 fid ffffffffc19d9000 126976 /tmp/crash-anaysis.3l6sr/modules/fid.ko ffffffffc1a0b740 ec ffffffffc19f9000 81920 /tmp/crash-anaysis.3l6sr/modules/ec.ko ffffffffc1a4b080 lmv ffffffffc1a0e000 372736 /tmp/crash-anaysis.3l6sr/modules/lmv.ko ffffffffc1aec440 osc ffffffffc1a6a000 790528 /tmp/crash-anaysis.3l6sr/modules/osc.ko ffffffffc1b84a80 lov ffffffffc1b2c000 552960 /tmp/crash-anaysis.3l6sr/modules/lov.ko ffffffffc1bfeb80 mdc ffffffffc1bb4000 466944 /tmp/crash-anaysis.3l6sr/modules/mdc.ko ffffffffc1c43000 mgc ffffffffc1c27000 184320 /tmp/crash-anaysis.3l6sr/modules/mgc.ko ffffffffc1c765c0 obdecho ffffffffc1c55000 225280 /tmp/crash-anaysis.3l6sr/modules/obdecho.ko ffffffffc1d47340 lfsck ffffffffc1c8d000 1081344 /tmp/crash-anaysis.3l6sr/modules/lfsck.ko ffffffffc1e16240 lquota ffffffffc1d96000 786432 /tmp/crash-anaysis.3l6sr/modules/lquota.ko ffffffffc1ec2b80 osd_zfs ffffffffc1e57000 659456 /tmp/crash-anaysis.3l6sr/modules/osd_zfs.ko ffffffffc1f5c400 mgs ffffffffc1ef9000 626688 /tmp/crash-anaysis.3l6sr/modules/mgs.ko ffffffffc200e0c0 mdd ffffffffc1f93000 745472 /tmp/crash-anaysis.3l6sr/modules/mdd.ko ffffffffc2158900 mdt ffffffffc204a000 1654784 /tmp/crash-anaysis.3l6sr/modules/mdt.ko ffffffffc228a680 lod ffffffffc21df000 1056768 /tmp/crash-anaysis.3l6sr/modules/lod.ko ffffffffc2350e40 ofd ffffffffc22e2000 688128 /tmp/crash-anaysis.3l6sr/modules/ofd.ko ffffffffc23e6f80 osp ffffffffc238b000 573440 /tmp/crash-anaysis.3l6sr/modules/osp.ko ffffffffc254d580 lustre ffffffffc2418000 1912832 /tmp/crash-anaysis.3l6sr/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, 0xffff9c5445dac1a8) 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 264 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, 0xffff9c5442b85468) 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 239 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, 0xffff9c5442da3fe8) 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 257 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, 0xffff9c5450975c88) 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 181 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 941 total debug pages from 4 CPUs to /tmp/crash-anaysis.3l6sr/lustre.bin