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.l9ixj/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68899/testresults/sanity-compr-special2-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg641-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 11:03:26 EDT 2026 UPTIME: 00:05:31 LOAD AVERAGE: 1.59, 1.29, 0.63 TASKS: 352 NODENAME: oleg641-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: 6495 COMMAND: "dp_sync_taskq" TASK: ffff952177058000 [THREAD_INFO: ffff952177058000] 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 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 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 pcspkr module mod: cannot find or load object file for ata_piix module mod: cannot find or load object file for squashfs module mod: cannot find or load object file for crc32c_intel module mod: cannot find or load object file for i2c_piix4 module mod: cannot find or load object file for sb_edac module mod: cannot find or load object file for intel_rapl_common module mod: cannot find or load object file for intel_rapl_msr 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 rapl 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 ffffffffc04d4740 libcfs ffffffffc04b4000 225280 /tmp/crash-anaysis.l9ixj/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0ef63c0 lnet ffffffffc0e1b000 1490944 /tmp/crash-anaysis.l9ixj/modules/lnet.ko ffffffffc0fb1900 ksocklnd ffffffffc0f88000 270336 /tmp/crash-anaysis.l9ixj/modules/ksocklnd.ko ffffffffc11120c0 obdclass ffffffffc0fcb000 4415488 /tmp/crash-anaysis.l9ixj/modules/obdclass.ko ffffffffc168e0c0 ptlrpc ffffffffc1402000 4173824 /tmp/crash-anaysis.l9ixj/modules/ptlrpc.ko ffffffffc184c880 ptlrpc_gss ffffffffc17fe000 524288 /tmp/crash-anaysis.l9ixj/modules/ptlrpc_gss.ko ffffffffc1891c80 fld ffffffffc187f000 126976 /tmp/crash-anaysis.l9ixj/modules/fld.ko ffffffffc18b1ac0 fid ffffffffc189f000 126976 /tmp/crash-anaysis.l9ixj/modules/fid.ko ffffffffc18d1740 ec ffffffffc18bf000 81920 /tmp/crash-anaysis.l9ixj/modules/ec.ko ffffffffc1911080 lmv ffffffffc18d4000 372736 /tmp/crash-anaysis.l9ixj/modules/lmv.ko ffffffffc19b2340 osc ffffffffc1930000 790528 /tmp/crash-anaysis.l9ixj/modules/osc.ko ffffffffc1a4aa00 lov ffffffffc19f2000 552960 /tmp/crash-anaysis.l9ixj/modules/lov.ko ffffffffc1ac4b80 mdc ffffffffc1a7a000 466944 /tmp/crash-anaysis.l9ixj/modules/mdc.ko ffffffffc1b09000 mgc ffffffffc1aed000 184320 /tmp/crash-anaysis.l9ixj/modules/mgc.ko ffffffffc1b3c5c0 obdecho ffffffffc1b1b000 225280 /tmp/crash-anaysis.l9ixj/modules/obdecho.ko ffffffffc1c0d340 lfsck ffffffffc1b53000 1081344 /tmp/crash-anaysis.l9ixj/modules/lfsck.ko ffffffffc1cdc240 lquota ffffffffc1c5c000 786432 /tmp/crash-anaysis.l9ixj/modules/lquota.ko ffffffffc1d88b80 osd_zfs ffffffffc1d1d000 659456 /tmp/crash-anaysis.l9ixj/modules/osd_zfs.ko ffffffffc1e22400 mgs ffffffffc1dbf000 626688 /tmp/crash-anaysis.l9ixj/modules/mgs.ko ffffffffc1ed4080 mdd ffffffffc1e59000 745472 /tmp/crash-anaysis.l9ixj/modules/mdd.ko ffffffffc201e900 mdt ffffffffc1f10000 1654784 /tmp/crash-anaysis.l9ixj/modules/mdt.ko ffffffffc2150540 lod ffffffffc20a5000 1056768 /tmp/crash-anaysis.l9ixj/modules/lod.ko ffffffffc2216e00 ofd ffffffffc21a8000 688128 /tmp/crash-anaysis.l9ixj/modules/ofd.ko ffffffffc22acf80 osp ffffffffc2251000 573440 /tmp/crash-anaysis.l9ixj/modules/osp.ko ffffffffc24124c0 lustre ffffffffc22de000 1908736 /tmp/crash-anaysis.l9ixj/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, 0xffff95214554e928) 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 154 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, 0xffff952144aea628) 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 122 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, 0xffff952142cff488) 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 102 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, 0xffff952142e10068) 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 131 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 509 total debug pages from 4 CPUs to /tmp/crash-anaysis.l9ixj/lustre.bin