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.Vtx7d/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68871/testresults/sanity-pfl-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg408-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Thu Aug 27 12:04:13 EDT 2026 UPTIME: 01:01:18 LOAD AVERAGE: 1.70, 1.57, 1.31 TASKS: 390 NODENAME: oleg408-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: 16519 COMMAND: "ll_ost_io00_011" TASK: ffff9951108ca7c0 [THREAD_INFO: ffff9951108ca7c0] CPU: 0 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 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 intel_rapl_msr module mod: cannot find or load object file for serio_raw module mod: cannot find or load object file for crc32c_intel 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 pcspkr module mod: cannot find or load object file for crct10dif_pclmul module mod: cannot find or load object file for i2c_piix4 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 rapl 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 ffffffffc06cb740 libcfs ffffffffc06ab000 225280 /tmp/crash-anaysis.Vtx7d/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc10ed3c0 lnet ffffffffc1012000 1490944 /tmp/crash-anaysis.Vtx7d/modules/lnet.ko ffffffffc11a8900 ksocklnd ffffffffc117f000 270336 /tmp/crash-anaysis.Vtx7d/modules/ksocklnd.ko ffffffffc1307a80 obdclass ffffffffc11c2000 4403200 /tmp/crash-anaysis.Vtx7d/modules/obdclass.ko ffffffffc18820c0 ptlrpc ffffffffc15f6000 4173824 /tmp/crash-anaysis.Vtx7d/modules/ptlrpc.ko ffffffffc1a40880 ptlrpc_gss ffffffffc19f2000 524288 /tmp/crash-anaysis.Vtx7d/modules/ptlrpc_gss.ko ffffffffc1a85c80 fld ffffffffc1a73000 126976 /tmp/crash-anaysis.Vtx7d/modules/fld.ko ffffffffc1aa5ac0 fid ffffffffc1a93000 126976 /tmp/crash-anaysis.Vtx7d/modules/fid.ko ffffffffc1ac5740 ec ffffffffc1ab3000 81920 /tmp/crash-anaysis.Vtx7d/modules/ec.ko ffffffffc1b05080 lmv ffffffffc1ac8000 372736 /tmp/crash-anaysis.Vtx7d/modules/lmv.ko ffffffffc1ba4f40 osc ffffffffc1b24000 786432 /tmp/crash-anaysis.Vtx7d/modules/osc.ko ffffffffc1c3da00 lov ffffffffc1be5000 552960 /tmp/crash-anaysis.Vtx7d/modules/lov.ko ffffffffc1cb7b80 mdc ffffffffc1c6d000 466944 /tmp/crash-anaysis.Vtx7d/modules/mdc.ko ffffffffc1cfc000 mgc ffffffffc1ce0000 184320 /tmp/crash-anaysis.Vtx7d/modules/mgc.ko ffffffffc1d2f5c0 obdecho ffffffffc1d0e000 225280 /tmp/crash-anaysis.Vtx7d/modules/obdecho.ko ffffffffc1e00340 lfsck ffffffffc1d46000 1081344 /tmp/crash-anaysis.Vtx7d/modules/lfsck.ko ffffffffc1ecf240 lquota ffffffffc1e4f000 786432 /tmp/crash-anaysis.Vtx7d/modules/lquota.ko ffffffffc1f7aac0 osd_zfs ffffffffc1f10000 655360 /tmp/crash-anaysis.Vtx7d/modules/osd_zfs.ko ffffffffc2014400 mgs ffffffffc1fb1000 626688 /tmp/crash-anaysis.Vtx7d/modules/mgs.ko ffffffffc20c6080 mdd ffffffffc204b000 745472 /tmp/crash-anaysis.Vtx7d/modules/mdd.ko ffffffffc2210940 mdt ffffffffc2102000 1654784 /tmp/crash-anaysis.Vtx7d/modules/mdt.ko ffffffffc2342480 lod ffffffffc2297000 1052672 /tmp/crash-anaysis.Vtx7d/modules/lod.ko ffffffffc2406a40 ofd ffffffffc2399000 679936 /tmp/crash-anaysis.Vtx7d/modules/ofd.ko ffffffffc249bf80 osp ffffffffc2440000 573440 /tmp/crash-anaysis.Vtx7d/modules/osp.ko ffffffffc26016c0 lustre ffffffffc24cd000 1912832 /tmp/crash-anaysis.Vtx7d/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, 0xffff99512e328288) 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 887 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, 0xffff995004f4dee8) 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 900 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, 0xffff995107f9ac68) 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 1024 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, 0xffff9950091fb9c8) 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 888 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 3699 total debug pages from 4 CPUs to /tmp/crash-anaysis.Vtx7d/lustre.bin