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.jdLIl/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68898/testresults/sanity-compr-special4-zfs-DNE-rocky8.10_x86_64-rocky8.10_x86_64/oleg345-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 10:58:44 EDT 2026 UPTIME: 00:06:44 LOAD AVERAGE: 1.69, 1.49, 0.75 TASKS: 403 NODENAME: oleg345-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: 7902 COMMAND: "dp_sync_taskq" TASK: ffff92d2dd2427c0 [THREAD_INFO: ffff92d2dd2427c0] 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_region_hash module mod: cannot find or load object file for dm_log module mod: cannot find or load object file for dm_mirror module mod: cannot find or load object file for intel_rapl_msr 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 dns_resolver 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 ata_piix 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 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 ffffffffc070c740 libcfs ffffffffc06ec000 225280 /tmp/crash-anaysis.jdLIl/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc112e3c0 lnet ffffffffc1053000 1490944 /tmp/crash-anaysis.jdLIl/modules/lnet.ko ffffffffc11e9900 ksocklnd ffffffffc11c0000 270336 /tmp/crash-anaysis.jdLIl/modules/ksocklnd.ko ffffffffc134a0c0 obdclass ffffffffc1203000 4415488 /tmp/crash-anaysis.jdLIl/modules/obdclass.ko ffffffffc18c60c0 ptlrpc ffffffffc163a000 4173824 /tmp/crash-anaysis.jdLIl/modules/ptlrpc.ko ffffffffc1a84880 ptlrpc_gss ffffffffc1a36000 524288 /tmp/crash-anaysis.jdLIl/modules/ptlrpc_gss.ko ffffffffc1ac9c80 fld ffffffffc1ab7000 126976 /tmp/crash-anaysis.jdLIl/modules/fld.ko ffffffffc1ae9ac0 fid ffffffffc1ad7000 126976 /tmp/crash-anaysis.jdLIl/modules/fid.ko ffffffffc1b09740 ec ffffffffc1af7000 81920 /tmp/crash-anaysis.jdLIl/modules/ec.ko ffffffffc1b49080 lmv ffffffffc1b0c000 372736 /tmp/crash-anaysis.jdLIl/modules/lmv.ko ffffffffc1bea380 osc ffffffffc1b68000 790528 /tmp/crash-anaysis.jdLIl/modules/osc.ko ffffffffc1c82a00 lov ffffffffc1c2a000 552960 /tmp/crash-anaysis.jdLIl/modules/lov.ko ffffffffc1cfcb80 mdc ffffffffc1cb2000 466944 /tmp/crash-anaysis.jdLIl/modules/mdc.ko ffffffffc1d41000 mgc ffffffffc1d25000 184320 /tmp/crash-anaysis.jdLIl/modules/mgc.ko ffffffffc1d745c0 obdecho ffffffffc1d53000 225280 /tmp/crash-anaysis.jdLIl/modules/obdecho.ko ffffffffc1e45340 lfsck ffffffffc1d8b000 1081344 /tmp/crash-anaysis.jdLIl/modules/lfsck.ko ffffffffc1f14240 lquota ffffffffc1e94000 786432 /tmp/crash-anaysis.jdLIl/modules/lquota.ko ffffffffc1fc0b80 osd_zfs ffffffffc1f55000 659456 /tmp/crash-anaysis.jdLIl/modules/osd_zfs.ko ffffffffc205a400 mgs ffffffffc1ff7000 626688 /tmp/crash-anaysis.jdLIl/modules/mgs.ko ffffffffc210c080 mdd ffffffffc2091000 745472 /tmp/crash-anaysis.jdLIl/modules/mdd.ko ffffffffc2256900 mdt ffffffffc2148000 1654784 /tmp/crash-anaysis.jdLIl/modules/mdt.ko ffffffffc2388540 lod ffffffffc22dd000 1056768 /tmp/crash-anaysis.jdLIl/modules/lod.ko ffffffffc244ee00 ofd ffffffffc23e0000 688128 /tmp/crash-anaysis.jdLIl/modules/ofd.ko ffffffffc24e4f80 osp ffffffffc2489000 573440 /tmp/crash-anaysis.jdLIl/modules/osp.ko ffffffffc264a4c0 lustre ffffffffc2516000 1908736 /tmp/crash-anaysis.jdLIl/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, 0xffff92d2d1dd5988) 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 183 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, 0xffff92d2e094f728) 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 261 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, 0xffff92d2c4a8e3a8) 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 189 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, 0xffff92d2c4f17a08) 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 181 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 814 total debug pages from 4 CPUs to /tmp/crash-anaysis.jdLIl/lustre.bin