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.T2U8l/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68908/testresults/sanity-compr-special4-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg343-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 10:40:29 EDT 2026 UPTIME: 00:05:18 LOAD AVERAGE: 1.19, 1.18, 0.55 TASKS: 355 NODENAME: oleg343-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: 6503 COMMAND: "dp_sync_taskq" TASK: ffff982b92d78000 [THREAD_INFO: ffff982b92d78000] 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_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 libata module mod: cannot find or load object file for serio_raw module mod: cannot find or load object file for crc32_pclmul module mod: cannot find or load object file for ghash_clmulni_intel 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 intel_rapl_msr module mod: cannot find or load object file for pcspkr module mod: cannot find or load object file for dns_resolver 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 rpcsec_gss_krb5 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 ffffffffc0409c80 fld ffffffffc03f7000 126976 /tmp/crash-anaysis.T2U8l/modules/fld.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0d78740 libcfs ffffffffc0d58000 225280 /tmp/crash-anaysis.T2U8l/modules/libcfs.ko ffffffffc0e6b3c0 lnet ffffffffc0d90000 1490944 /tmp/crash-anaysis.T2U8l/modules/lnet.ko ffffffffc0f26900 ksocklnd ffffffffc0efd000 270336 /tmp/crash-anaysis.T2U8l/modules/ksocklnd.ko ffffffffc1085a80 obdclass ffffffffc0f40000 4403200 /tmp/crash-anaysis.T2U8l/modules/obdclass.ko ffffffffc16000c0 ptlrpc ffffffffc1374000 4173824 /tmp/crash-anaysis.T2U8l/modules/ptlrpc.ko ffffffffc17be880 ptlrpc_gss ffffffffc1770000 524288 /tmp/crash-anaysis.T2U8l/modules/ptlrpc_gss.ko ffffffffc1803ac0 fid ffffffffc17f1000 126976 /tmp/crash-anaysis.T2U8l/modules/fid.ko ffffffffc1823740 ec ffffffffc1811000 81920 /tmp/crash-anaysis.T2U8l/modules/ec.ko ffffffffc1863080 lmv ffffffffc1826000 372736 /tmp/crash-anaysis.T2U8l/modules/lmv.ko ffffffffc1904200 osc ffffffffc1882000 790528 /tmp/crash-anaysis.T2U8l/modules/osc.ko ffffffffc199ca00 lov ffffffffc1944000 552960 /tmp/crash-anaysis.T2U8l/modules/lov.ko ffffffffc1a16b80 mdc ffffffffc19cc000 466944 /tmp/crash-anaysis.T2U8l/modules/mdc.ko ffffffffc1a5b000 mgc ffffffffc1a3f000 184320 /tmp/crash-anaysis.T2U8l/modules/mgc.ko ffffffffc1a8e5c0 obdecho ffffffffc1a6d000 225280 /tmp/crash-anaysis.T2U8l/modules/obdecho.ko ffffffffc1b5f340 lfsck ffffffffc1aa5000 1081344 /tmp/crash-anaysis.T2U8l/modules/lfsck.ko ffffffffc1c2e240 lquota ffffffffc1bae000 786432 /tmp/crash-anaysis.T2U8l/modules/lquota.ko ffffffffc1cd9ac0 osd_zfs ffffffffc1c6f000 655360 /tmp/crash-anaysis.T2U8l/modules/osd_zfs.ko ffffffffc1d73400 mgs ffffffffc1d10000 626688 /tmp/crash-anaysis.T2U8l/modules/mgs.ko ffffffffc1e25080 mdd ffffffffc1daa000 745472 /tmp/crash-anaysis.T2U8l/modules/mdd.ko ffffffffc1f6f940 mdt ffffffffc1e61000 1654784 /tmp/crash-anaysis.T2U8l/modules/mdt.ko ffffffffc20a1480 lod ffffffffc1ff6000 1052672 /tmp/crash-anaysis.T2U8l/modules/lod.ko ffffffffc2166ac0 ofd ffffffffc20f8000 684032 /tmp/crash-anaysis.T2U8l/modules/ofd.ko ffffffffc21fbf80 osp ffffffffc21a0000 573440 /tmp/crash-anaysis.T2U8l/modules/osp.ko ffffffffc23616c0 lustre ffffffffc222d000 1912832 /tmp/crash-anaysis.T2U8l/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, 0xffff982b907507e8) 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 124 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, 0xffff982b8613eba8) 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 126 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, 0xffff982b86914de8) 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 148 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, 0xffff982b8728d568) 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 148 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 546 total debug pages from 4 CPUs to /tmp/crash-anaysis.T2U8l/lustre.bin