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.KksjG/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68887/testresults/sanity-compr-special4-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg221-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 13:37:49 EDT 2026 UPTIME: 00:07:52 LOAD AVERAGE: 1.52, 1.72, 0.94 TASKS: 402 NODENAME: oleg221-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: 7911 COMMAND: "dp_sync_taskq" TASK: ffff91c0fc614f80 [THREAD_INFO: ffff91c0fc614f80] 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_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 pcspkr 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 i2c_piix4 module mod: cannot find or load object file for serio_raw module mod: cannot find or load object file for intel_rapl_msr module mod: cannot find or load object file for ata_piix 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 ata_generic 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 rapl module mod: cannot find or load object file for dns_resolver 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 mod: cannot find or load object file for rpcsec_gss_krb5 module MODULE NAME BASE SIZE OBJECT FILE ffffffffc0778740 libcfs ffffffffc0758000 225280 /tmp/crash-anaysis.KksjG/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc119a3c0 lnet ffffffffc10bf000 1490944 /tmp/crash-anaysis.KksjG/modules/lnet.ko ffffffffc1255900 ksocklnd ffffffffc122c000 270336 /tmp/crash-anaysis.KksjG/modules/ksocklnd.ko ffffffffc13b60c0 obdclass ffffffffc126f000 4415488 /tmp/crash-anaysis.KksjG/modules/obdclass.ko ffffffffc19320c0 ptlrpc ffffffffc16a6000 4173824 /tmp/crash-anaysis.KksjG/modules/ptlrpc.ko ffffffffc1af0880 ptlrpc_gss ffffffffc1aa2000 524288 /tmp/crash-anaysis.KksjG/modules/ptlrpc_gss.ko ffffffffc1b35c80 fld ffffffffc1b23000 126976 /tmp/crash-anaysis.KksjG/modules/fld.ko ffffffffc1b55ac0 fid ffffffffc1b43000 126976 /tmp/crash-anaysis.KksjG/modules/fid.ko ffffffffc1b75740 ec ffffffffc1b63000 81920 /tmp/crash-anaysis.KksjG/modules/ec.ko ffffffffc1bb5080 lmv ffffffffc1b78000 372736 /tmp/crash-anaysis.KksjG/modules/lmv.ko ffffffffc1c56440 osc ffffffffc1bd4000 790528 /tmp/crash-anaysis.KksjG/modules/osc.ko ffffffffc1ceea80 lov ffffffffc1c96000 552960 /tmp/crash-anaysis.KksjG/modules/lov.ko ffffffffc1d68b80 mdc ffffffffc1d1e000 466944 /tmp/crash-anaysis.KksjG/modules/mdc.ko ffffffffc1dad000 mgc ffffffffc1d91000 184320 /tmp/crash-anaysis.KksjG/modules/mgc.ko ffffffffc1de05c0 obdecho ffffffffc1dbf000 225280 /tmp/crash-anaysis.KksjG/modules/obdecho.ko ffffffffc1eb1340 lfsck ffffffffc1df7000 1081344 /tmp/crash-anaysis.KksjG/modules/lfsck.ko ffffffffc1f80240 lquota ffffffffc1f00000 786432 /tmp/crash-anaysis.KksjG/modules/lquota.ko ffffffffc202cb80 osd_zfs ffffffffc1fc1000 659456 /tmp/crash-anaysis.KksjG/modules/osd_zfs.ko ffffffffc20c6400 mgs ffffffffc2063000 626688 /tmp/crash-anaysis.KksjG/modules/mgs.ko ffffffffc21780c0 mdd ffffffffc20fd000 745472 /tmp/crash-anaysis.KksjG/modules/mdd.ko ffffffffc22c2900 mdt ffffffffc21b4000 1654784 /tmp/crash-anaysis.KksjG/modules/mdt.ko ffffffffc23f4680 lod ffffffffc2349000 1056768 /tmp/crash-anaysis.KksjG/modules/lod.ko ffffffffc24bae40 ofd ffffffffc244c000 688128 /tmp/crash-anaysis.KksjG/modules/ofd.ko ffffffffc2550f80 osp ffffffffc24f5000 573440 /tmp/crash-anaysis.KksjG/modules/osp.ko ffffffffc26b7580 lustre ffffffffc2582000 1912832 /tmp/crash-anaysis.KksjG/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, 0xffff91c0c72f2a48) 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 262 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, 0xffff91c0c3f66148) 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 208 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, 0xffff91c0c7249148) 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 200 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, 0xffff91c0d2f32068) 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 250 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 920 total debug pages from 4 CPUs to /tmp/crash-anaysis.KksjG/lustre.bin