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.117sB/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68896/testresults/sanity-compr-special4-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg149-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 12:00:28 EDT 2026 UPTIME: 00:06:48 LOAD AVERAGE: 1.42, 1.37, 0.70 TASKS: 400 NODENAME: oleg149-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: 7930 COMMAND: "dp_sync_taskq" TASK: ffff8ea583ea0000 [THREAD_INFO: ffff8ea583ea0000] 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 dns_resolver module mod: cannot find or load object file for libata 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 pcspkr 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 squashfs 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 sb_edac module mod: cannot find or load object file for intel_rapl_msr module mod: cannot find or load object file for rapl 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 ffffffffc0528740 libcfs ffffffffc0508000 225280 /tmp/crash-anaysis.117sB/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0f4a3c0 lnet ffffffffc0e6f000 1490944 /tmp/crash-anaysis.117sB/modules/lnet.ko ffffffffc1005900 ksocklnd ffffffffc0fdc000 270336 /tmp/crash-anaysis.117sB/modules/ksocklnd.ko ffffffffc11660c0 obdclass ffffffffc101f000 4415488 /tmp/crash-anaysis.117sB/modules/obdclass.ko ffffffffc16e20c0 ptlrpc ffffffffc1456000 4173824 /tmp/crash-anaysis.117sB/modules/ptlrpc.ko ffffffffc18a0880 ptlrpc_gss ffffffffc1852000 524288 /tmp/crash-anaysis.117sB/modules/ptlrpc_gss.ko ffffffffc18e5c80 fld ffffffffc18d3000 126976 /tmp/crash-anaysis.117sB/modules/fld.ko ffffffffc1905ac0 fid ffffffffc18f3000 126976 /tmp/crash-anaysis.117sB/modules/fid.ko ffffffffc1925740 ec ffffffffc1913000 81920 /tmp/crash-anaysis.117sB/modules/ec.ko ffffffffc1965080 lmv ffffffffc1928000 372736 /tmp/crash-anaysis.117sB/modules/lmv.ko ffffffffc1a06380 osc ffffffffc1984000 790528 /tmp/crash-anaysis.117sB/modules/osc.ko ffffffffc1a9ea00 lov ffffffffc1a46000 552960 /tmp/crash-anaysis.117sB/modules/lov.ko ffffffffc1b18b80 mdc ffffffffc1ace000 466944 /tmp/crash-anaysis.117sB/modules/mdc.ko ffffffffc1b5d000 mgc ffffffffc1b41000 184320 /tmp/crash-anaysis.117sB/modules/mgc.ko ffffffffc1b905c0 obdecho ffffffffc1b6f000 225280 /tmp/crash-anaysis.117sB/modules/obdecho.ko ffffffffc1c61340 lfsck ffffffffc1ba7000 1081344 /tmp/crash-anaysis.117sB/modules/lfsck.ko ffffffffc1d30240 lquota ffffffffc1cb0000 786432 /tmp/crash-anaysis.117sB/modules/lquota.ko ffffffffc1ddcb80 osd_zfs ffffffffc1d71000 659456 /tmp/crash-anaysis.117sB/modules/osd_zfs.ko ffffffffc1e76400 mgs ffffffffc1e13000 626688 /tmp/crash-anaysis.117sB/modules/mgs.ko ffffffffc1f28080 mdd ffffffffc1ead000 745472 /tmp/crash-anaysis.117sB/modules/mdd.ko ffffffffc2072900 mdt ffffffffc1f64000 1654784 /tmp/crash-anaysis.117sB/modules/mdt.ko ffffffffc21a4540 lod ffffffffc20f9000 1056768 /tmp/crash-anaysis.117sB/modules/lod.ko ffffffffc226ae40 ofd ffffffffc21fc000 688128 /tmp/crash-anaysis.117sB/modules/ofd.ko ffffffffc2300f80 osp ffffffffc22a5000 573440 /tmp/crash-anaysis.117sB/modules/osp.ko ffffffffc24664c0 lustre ffffffffc2332000 1908736 /tmp/crash-anaysis.117sB/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, 0xffff8ea586520f68) 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 194 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, 0xffff8ea584d80fc8) 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 197 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, 0xffff8ea584cd70a8) 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 203 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, 0xffff8ea588734d08) 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 202 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 796 total debug pages from 4 CPUs to /tmp/crash-anaysis.117sB/lustre.bin