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.GQMbc/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68883/testresults/sanity-compr-special10-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64-retry1/oleg155-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 13:31:39 EDT 2026 UPTIME: 00:08:00 LOAD AVERAGE: 2.02, 1.58, 0.82 TASKS: 408 NODENAME: oleg155-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: 7951 COMMAND: "dp_sync_taskq" TASK: ffff9004c2c14f80 [THREAD_INFO: ffff9004c2c14f80] CPU: 2 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 pcspkr module mod: cannot find or load object file for rapl module mod: cannot find or load object file for intel_rapl_msr 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 sb_edac module mod: cannot find or load object file for intel_rapl_common module mod: cannot find or load object file for dns_resolver 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 ffffffffc042a740 libcfs ffffffffc040a000 225280 /tmp/crash-anaysis.GQMbc/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0e4c3c0 lnet ffffffffc0d71000 1490944 /tmp/crash-anaysis.GQMbc/modules/lnet.ko ffffffffc0f07900 ksocklnd ffffffffc0ede000 270336 /tmp/crash-anaysis.GQMbc/modules/ksocklnd.ko ffffffffc10680c0 obdclass ffffffffc0f21000 4415488 /tmp/crash-anaysis.GQMbc/modules/obdclass.ko ffffffffc15e40c0 ptlrpc ffffffffc1358000 4173824 /tmp/crash-anaysis.GQMbc/modules/ptlrpc.ko ffffffffc17a2880 ptlrpc_gss ffffffffc1754000 524288 /tmp/crash-anaysis.GQMbc/modules/ptlrpc_gss.ko ffffffffc17e7c80 fld ffffffffc17d5000 126976 /tmp/crash-anaysis.GQMbc/modules/fld.ko ffffffffc1807ac0 fid ffffffffc17f5000 126976 /tmp/crash-anaysis.GQMbc/modules/fid.ko ffffffffc1827740 ec ffffffffc1815000 81920 /tmp/crash-anaysis.GQMbc/modules/ec.ko ffffffffc1867080 lmv ffffffffc182a000 372736 /tmp/crash-anaysis.GQMbc/modules/lmv.ko ffffffffc1908480 osc ffffffffc1886000 790528 /tmp/crash-anaysis.GQMbc/modules/osc.ko ffffffffc19a0b00 lov ffffffffc1948000 552960 /tmp/crash-anaysis.GQMbc/modules/lov.ko ffffffffc1a1ab80 mdc ffffffffc19d0000 466944 /tmp/crash-anaysis.GQMbc/modules/mdc.ko ffffffffc1a5f000 mgc ffffffffc1a43000 184320 /tmp/crash-anaysis.GQMbc/modules/mgc.ko ffffffffc1a925c0 obdecho ffffffffc1a71000 225280 /tmp/crash-anaysis.GQMbc/modules/obdecho.ko ffffffffc1b63340 lfsck ffffffffc1aa9000 1081344 /tmp/crash-anaysis.GQMbc/modules/lfsck.ko ffffffffc1c32240 lquota ffffffffc1bb2000 786432 /tmp/crash-anaysis.GQMbc/modules/lquota.ko ffffffffc1cdeb80 osd_zfs ffffffffc1c73000 659456 /tmp/crash-anaysis.GQMbc/modules/osd_zfs.ko ffffffffc1d78400 mgs ffffffffc1d15000 626688 /tmp/crash-anaysis.GQMbc/modules/mgs.ko ffffffffc1e2a0c0 mdd ffffffffc1daf000 745472 /tmp/crash-anaysis.GQMbc/modules/mdd.ko ffffffffc1f74900 mdt ffffffffc1e66000 1654784 /tmp/crash-anaysis.GQMbc/modules/mdt.ko ffffffffc20a8900 lod ffffffffc1ffb000 1064960 /tmp/crash-anaysis.GQMbc/modules/lod.ko ffffffffc216ee40 ofd ffffffffc2100000 688128 /tmp/crash-anaysis.GQMbc/modules/ofd.ko ffffffffc2204f80 osp ffffffffc21a9000 573440 /tmp/crash-anaysis.GQMbc/modules/osp.ko ffffffffc236c780 lustre ffffffffc2236000 1925120 /tmp/crash-anaysis.GQMbc/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, 0xffff9004d0edf568) 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 218 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, 0xffff9004d2d65b08) 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 290 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, 0xffff9004c96564e8) 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 205 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, 0xffff9004c965b0a8) 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 240 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 953 total debug pages from 4 CPUs to /tmp/crash-anaysis.GQMbc/lustre.bin