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.Tutku/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68866/testresults/sanity-pfl-special4-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg357-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 06:31:11 EDT 2026 UPTIME: 00:05:55 LOAD AVERAGE: 1.75, 1.05, 0.48 TASKS: 351 NODENAME: oleg357-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: 6682 COMMAND: "ll_ost_io00_001" TASK: ffffa0b187ee8000 [THREAD_INFO: ffffa0b187ee8000] 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_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 crct10dif_pclmul module mod: cannot find or load object file for ata_generic 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 pcspkr 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 ata_piix module mod: cannot find or load object file for intel_rapl_msr module mod: cannot find or load object file for dns_resolver module mod: cannot find or load object file for ghash_clmulni_intel 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 ffffffffc04f5740 libcfs ffffffffc04d5000 225280 /tmp/crash-anaysis.Tutku/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0f173c0 lnet ffffffffc0e3c000 1490944 /tmp/crash-anaysis.Tutku/modules/lnet.ko ffffffffc0fd2900 ksocklnd ffffffffc0fa9000 270336 /tmp/crash-anaysis.Tutku/modules/ksocklnd.ko ffffffffc1131a80 obdclass ffffffffc0fec000 4403200 /tmp/crash-anaysis.Tutku/modules/obdclass.ko ffffffffc16ac0c0 ptlrpc ffffffffc1420000 4173824 /tmp/crash-anaysis.Tutku/modules/ptlrpc.ko ffffffffc186a880 ptlrpc_gss ffffffffc181c000 524288 /tmp/crash-anaysis.Tutku/modules/ptlrpc_gss.ko ffffffffc18afc80 fld ffffffffc189d000 126976 /tmp/crash-anaysis.Tutku/modules/fld.ko ffffffffc18cfac0 fid ffffffffc18bd000 126976 /tmp/crash-anaysis.Tutku/modules/fid.ko ffffffffc18ef740 ec ffffffffc18dd000 81920 /tmp/crash-anaysis.Tutku/modules/ec.ko ffffffffc192f080 lmv ffffffffc18f2000 372736 /tmp/crash-anaysis.Tutku/modules/lmv.ko ffffffffc19d02c0 osc ffffffffc194e000 790528 /tmp/crash-anaysis.Tutku/modules/osc.ko ffffffffc1a68a00 lov ffffffffc1a10000 552960 /tmp/crash-anaysis.Tutku/modules/lov.ko ffffffffc1ae2b80 mdc ffffffffc1a98000 466944 /tmp/crash-anaysis.Tutku/modules/mdc.ko ffffffffc1b27000 mgc ffffffffc1b0b000 184320 /tmp/crash-anaysis.Tutku/modules/mgc.ko ffffffffc1b5a5c0 obdecho ffffffffc1b39000 225280 /tmp/crash-anaysis.Tutku/modules/obdecho.ko ffffffffc1c2b340 lfsck ffffffffc1b71000 1081344 /tmp/crash-anaysis.Tutku/modules/lfsck.ko ffffffffc1cfa240 lquota ffffffffc1c7a000 786432 /tmp/crash-anaysis.Tutku/modules/lquota.ko ffffffffc1da5ac0 osd_zfs ffffffffc1d3b000 655360 /tmp/crash-anaysis.Tutku/modules/osd_zfs.ko ffffffffc1e3f400 mgs ffffffffc1ddc000 626688 /tmp/crash-anaysis.Tutku/modules/mgs.ko ffffffffc1ef1080 mdd ffffffffc1e76000 745472 /tmp/crash-anaysis.Tutku/modules/mdd.ko ffffffffc203b940 mdt ffffffffc1f2d000 1654784 /tmp/crash-anaysis.Tutku/modules/mdt.ko ffffffffc216d480 lod ffffffffc20c2000 1052672 /tmp/crash-anaysis.Tutku/modules/lod.ko ffffffffc2231a40 ofd ffffffffc21c4000 679936 /tmp/crash-anaysis.Tutku/modules/ofd.ko ffffffffc22c6f80 osp ffffffffc226b000 573440 /tmp/crash-anaysis.Tutku/modules/osp.ko ffffffffc242c6c0 lustre ffffffffc22f8000 1912832 /tmp/crash-anaysis.Tutku/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, 0xffffa0b1ad4c6328) 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 930 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, 0xffffa0b1be0b0408) 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 903 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, 0xffffa0b1b7761e28) 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, 0xffffa0b1982e9c28) 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 836 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 3693 total debug pages from 4 CPUs to /tmp/crash-anaysis.Tutku/lustre.bin