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.15E6G/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68904/testresults/sanity-special3-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg623-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 11:47:18 EDT 2026 UPTIME: 00:05:51 LOAD AVERAGE: 1.46, 1.45, 0.72 TASKS: 357 NODENAME: oleg623-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: 7437 COMMAND: "dp_sync_taskq" TASK: ffff98d9412acf80 [THREAD_INFO: ffff98d9412acf80] 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 pcspkr 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 rapl module mod: cannot find or load object file for ata_piix 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 intel_rapl_msr module mod: cannot find or load object file for ata_generic module mod: cannot find or load object file for dns_resolver 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 intel_rapl_common module mod: cannot find or load object file for sb_edac 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 ffffffffc0776740 libcfs ffffffffc0756000 225280 /tmp/crash-anaysis.15E6G/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc11983c0 lnet ffffffffc10bd000 1490944 /tmp/crash-anaysis.15E6G/modules/lnet.ko ffffffffc1253900 ksocklnd ffffffffc122a000 270336 /tmp/crash-anaysis.15E6G/modules/ksocklnd.ko ffffffffc13b3fc0 obdclass ffffffffc126d000 4415488 /tmp/crash-anaysis.15E6G/modules/obdclass.ko ffffffffc19300c0 ptlrpc ffffffffc16a4000 4173824 /tmp/crash-anaysis.15E6G/modules/ptlrpc.ko ffffffffc1aee880 ptlrpc_gss ffffffffc1aa0000 524288 /tmp/crash-anaysis.15E6G/modules/ptlrpc_gss.ko ffffffffc1b33c80 fld ffffffffc1b21000 126976 /tmp/crash-anaysis.15E6G/modules/fld.ko ffffffffc1b53ac0 fid ffffffffc1b41000 126976 /tmp/crash-anaysis.15E6G/modules/fid.ko ffffffffc1b73740 ec ffffffffc1b61000 81920 /tmp/crash-anaysis.15E6G/modules/ec.ko ffffffffc1bb3080 lmv ffffffffc1b76000 372736 /tmp/crash-anaysis.15E6G/modules/lmv.ko ffffffffc1c54300 osc ffffffffc1bd2000 790528 /tmp/crash-anaysis.15E6G/modules/osc.ko ffffffffc1cec9c0 lov ffffffffc1c94000 552960 /tmp/crash-anaysis.15E6G/modules/lov.ko ffffffffc1d66b80 mdc ffffffffc1d1c000 466944 /tmp/crash-anaysis.15E6G/modules/mdc.ko ffffffffc1dab000 mgc ffffffffc1d8f000 184320 /tmp/crash-anaysis.15E6G/modules/mgc.ko ffffffffc1dde5c0 obdecho ffffffffc1dbd000 225280 /tmp/crash-anaysis.15E6G/modules/obdecho.ko ffffffffc1eaf340 lfsck ffffffffc1df5000 1081344 /tmp/crash-anaysis.15E6G/modules/lfsck.ko ffffffffc1f7e240 lquota ffffffffc1efe000 786432 /tmp/crash-anaysis.15E6G/modules/lquota.ko ffffffffc202ab80 osd_zfs ffffffffc1fbf000 659456 /tmp/crash-anaysis.15E6G/modules/osd_zfs.ko ffffffffc20c4400 mgs ffffffffc2061000 626688 /tmp/crash-anaysis.15E6G/modules/mgs.ko ffffffffc2176080 mdd ffffffffc20fb000 745472 /tmp/crash-anaysis.15E6G/modules/mdd.ko ffffffffc22c0940 mdt ffffffffc21b2000 1654784 /tmp/crash-anaysis.15E6G/modules/mdt.ko ffffffffc23f2480 lod ffffffffc2347000 1056768 /tmp/crash-anaysis.15E6G/modules/lod.ko ffffffffc24b9e40 ofd ffffffffc244a000 692224 /tmp/crash-anaysis.15E6G/modules/ofd.ko ffffffffc254ff80 osp ffffffffc24f4000 573440 /tmp/crash-anaysis.15E6G/modules/osp.ko ffffffffc26b54c0 lustre ffffffffc2581000 1908736 /tmp/crash-anaysis.15E6G/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, 0xffff98da43ea8908) 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 135 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, 0xffff98da44ee1208) 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 118 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, 0xffff98da46665008) 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 137 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, 0xffff98da5c367a68) 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 141 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 531 total debug pages from 4 CPUs to /tmp/crash-anaysis.15E6G/lustre.bin