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.bZEi7/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68898/testresults/sanity-compr-special2-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg219-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 10:59:40 EDT 2026 UPTIME: 00:07:31 LOAD AVERAGE: 2.01, 1.73, 0.87 TASKS: 407 NODENAME: oleg219-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: 7924 COMMAND: "dp_sync_taskq" TASK: ffff895ec8834f80 [THREAD_INFO: ffff895ec8834f80] CPU: 0 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 intel_rapl_msr 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 ata_generic module mod: cannot find or load object file for crc32_pclmul 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 crc32c_intel module mod: cannot find or load object file for squashfs 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 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 ffffffffc0581740 libcfs ffffffffc0561000 225280 /tmp/crash-anaysis.bZEi7/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0fa33c0 lnet ffffffffc0ec8000 1490944 /tmp/crash-anaysis.bZEi7/modules/lnet.ko ffffffffc105e900 ksocklnd ffffffffc1035000 270336 /tmp/crash-anaysis.bZEi7/modules/ksocklnd.ko ffffffffc11bf0c0 obdclass ffffffffc1078000 4415488 /tmp/crash-anaysis.bZEi7/modules/obdclass.ko ffffffffc173b0c0 ptlrpc ffffffffc14af000 4173824 /tmp/crash-anaysis.bZEi7/modules/ptlrpc.ko ffffffffc18f9880 ptlrpc_gss ffffffffc18ab000 524288 /tmp/crash-anaysis.bZEi7/modules/ptlrpc_gss.ko ffffffffc193ec80 fld ffffffffc192c000 126976 /tmp/crash-anaysis.bZEi7/modules/fld.ko ffffffffc195eac0 fid ffffffffc194c000 126976 /tmp/crash-anaysis.bZEi7/modules/fid.ko ffffffffc197e740 ec ffffffffc196c000 81920 /tmp/crash-anaysis.bZEi7/modules/ec.ko ffffffffc19be080 lmv ffffffffc1981000 372736 /tmp/crash-anaysis.bZEi7/modules/lmv.ko ffffffffc1a5f380 osc ffffffffc19dd000 790528 /tmp/crash-anaysis.bZEi7/modules/osc.ko ffffffffc1af7a00 lov ffffffffc1a9f000 552960 /tmp/crash-anaysis.bZEi7/modules/lov.ko ffffffffc1b71b80 mdc ffffffffc1b27000 466944 /tmp/crash-anaysis.bZEi7/modules/mdc.ko ffffffffc1bb6000 mgc ffffffffc1b9a000 184320 /tmp/crash-anaysis.bZEi7/modules/mgc.ko ffffffffc1be95c0 obdecho ffffffffc1bc8000 225280 /tmp/crash-anaysis.bZEi7/modules/obdecho.ko ffffffffc1cba340 lfsck ffffffffc1c00000 1081344 /tmp/crash-anaysis.bZEi7/modules/lfsck.ko ffffffffc1d89240 lquota ffffffffc1d09000 786432 /tmp/crash-anaysis.bZEi7/modules/lquota.ko ffffffffc1e35b80 osd_zfs ffffffffc1dca000 659456 /tmp/crash-anaysis.bZEi7/modules/osd_zfs.ko ffffffffc1ecf400 mgs ffffffffc1e6c000 626688 /tmp/crash-anaysis.bZEi7/modules/mgs.ko ffffffffc1f81080 mdd ffffffffc1f06000 745472 /tmp/crash-anaysis.bZEi7/modules/mdd.ko ffffffffc20cb900 mdt ffffffffc1fbd000 1654784 /tmp/crash-anaysis.bZEi7/modules/mdt.ko ffffffffc21fd540 lod ffffffffc2152000 1056768 /tmp/crash-anaysis.bZEi7/modules/lod.ko ffffffffc22c3e00 ofd ffffffffc2255000 688128 /tmp/crash-anaysis.bZEi7/modules/ofd.ko ffffffffc2359f80 osp ffffffffc22fe000 573440 /tmp/crash-anaysis.bZEi7/modules/osp.ko ffffffffc24bf4c0 lustre ffffffffc238b000 1908736 /tmp/crash-anaysis.bZEi7/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, 0xffff895ec32231e8) 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 191 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, 0xffff895ec4718408) 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 212 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, 0xffff895ec794ae68) 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 233 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, 0xffff895ec60d0d88) 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 217 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.bZEi7/lustre.bin