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.JXIwU/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68845/testresults/sanity-compr-special2-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg242-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 07:51:34 EDT 2026 UPTIME: 00:06:31 LOAD AVERAGE: 1.70, 1.55, 0.78 TASKS: 342 NODENAME: oleg242-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 000000000000002e" PID: 6696 COMMAND: "ll_ost_io00_002" TASK: ffff91d4d2f24f80 [THREAD_INFO: ffff91d4d2f24f80] CPU: 3 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 libata 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 pcspkr module mod: cannot find or load object file for crct10dif_pclmul module mod: cannot find or load object file for rapl module mod: cannot find or load object file for serio_raw 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_piix 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 ata_generic 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 auth_rpcgss 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 rpcsec_gss_krb5 module MODULE NAME BASE SIZE OBJECT FILE ffffffffc0563740 libcfs ffffffffc0543000 225280 /tmp/crash-anaysis.JXIwU/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0f853c0 lnet ffffffffc0eaa000 1490944 /tmp/crash-anaysis.JXIwU/modules/lnet.ko ffffffffc1040900 ksocklnd ffffffffc1017000 270336 /tmp/crash-anaysis.JXIwU/modules/ksocklnd.ko ffffffffc119e800 obdclass ffffffffc105a000 4395008 /tmp/crash-anaysis.JXIwU/modules/obdclass.ko ffffffffc1719240 ptlrpc ffffffffc148c000 4186112 /tmp/crash-anaysis.JXIwU/modules/ptlrpc.ko ffffffffc18d9880 ptlrpc_gss ffffffffc188b000 524288 /tmp/crash-anaysis.JXIwU/modules/ptlrpc_gss.ko ffffffffc191ec80 fld ffffffffc190c000 126976 /tmp/crash-anaysis.JXIwU/modules/fld.ko ffffffffc193eac0 fid ffffffffc192c000 126976 /tmp/crash-anaysis.JXIwU/modules/fid.ko ffffffffc195e740 ec ffffffffc194c000 81920 /tmp/crash-anaysis.JXIwU/modules/ec.ko ffffffffc199e080 lmv ffffffffc1961000 372736 /tmp/crash-anaysis.JXIwU/modules/lmv.ko ffffffffc1a3dd00 osc ffffffffc19bd000 778240 /tmp/crash-anaysis.JXIwU/modules/osc.ko ffffffffc1ad4a00 lov ffffffffc1a7c000 552960 /tmp/crash-anaysis.JXIwU/modules/lov.ko ffffffffc1b4eb80 mdc ffffffffc1b04000 466944 /tmp/crash-anaysis.JXIwU/modules/mdc.ko ffffffffc1b93000 mgc ffffffffc1b77000 184320 /tmp/crash-anaysis.JXIwU/modules/mgc.ko ffffffffc1bc65c0 obdecho ffffffffc1ba5000 225280 /tmp/crash-anaysis.JXIwU/modules/obdecho.ko ffffffffc1c97200 lfsck ffffffffc1bdd000 1081344 /tmp/crash-anaysis.JXIwU/modules/lfsck.ko ffffffffc1d66240 lquota ffffffffc1ce6000 786432 /tmp/crash-anaysis.JXIwU/modules/lquota.ko ffffffffc1e11ac0 osd_zfs ffffffffc1da7000 655360 /tmp/crash-anaysis.JXIwU/modules/osd_zfs.ko ffffffffc1eab400 mgs ffffffffc1e48000 626688 /tmp/crash-anaysis.JXIwU/modules/mgs.ko ffffffffc1f5d080 mdd ffffffffc1ee2000 745472 /tmp/crash-anaysis.JXIwU/modules/mdd.ko ffffffffc20a7880 mdt ffffffffc1f99000 1654784 /tmp/crash-anaysis.JXIwU/modules/mdt.ko ffffffffc21d9480 lod ffffffffc212e000 1052672 /tmp/crash-anaysis.JXIwU/modules/lod.ko ffffffffc22a0fc0 ofd ffffffffc2230000 696320 /tmp/crash-anaysis.JXIwU/modules/ofd.ko ffffffffc2336f80 osp ffffffffc22db000 573440 /tmp/crash-anaysis.JXIwU/modules/osp.ko ffffffffc249c640 lustre ffffffffc2368000 1908736 /tmp/crash-anaysis.JXIwU/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, 0xffff91d4d9a70708) 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 119 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, 0xffff91d4d2f07f68) 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 135 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, 0xffff91d4c2ad37a8) 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 103 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, 0xffff91d4d853a6a8) 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 117 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 474 total debug pages from 4 CPUs to /tmp/crash-anaysis.JXIwU/lustre.bin