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.u0mms/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68866/testresults/sanity-pfl-special7-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg644-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Wed Aug 26 06:30:38 EDT 2026 UPTIME: 00:05:53 LOAD AVERAGE: 1.18, 1.13, 0.57 TASKS: 352 NODENAME: oleg644-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: 6691 COMMAND: "ll_ost_io00_000" TASK: ffff9c2df4a60000 [THREAD_INFO: ffff9c2df4a60000] 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 ata_generic 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 pcspkr module mod: cannot find or load object file for intel_rapl_common 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 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 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 nfsv4 module mod: cannot find or load object file for auth_rpcgss module MODULE NAME BASE SIZE OBJECT FILE ffffffffc0567740 libcfs ffffffffc0547000 225280 /tmp/crash-anaysis.u0mms/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0f893c0 lnet ffffffffc0eae000 1490944 /tmp/crash-anaysis.u0mms/modules/lnet.ko ffffffffc1044900 ksocklnd ffffffffc101b000 270336 /tmp/crash-anaysis.u0mms/modules/ksocklnd.ko ffffffffc11a3a80 obdclass ffffffffc105e000 4403200 /tmp/crash-anaysis.u0mms/modules/obdclass.ko ffffffffc171e0c0 ptlrpc ffffffffc1492000 4173824 /tmp/crash-anaysis.u0mms/modules/ptlrpc.ko ffffffffc18dc880 ptlrpc_gss ffffffffc188e000 524288 /tmp/crash-anaysis.u0mms/modules/ptlrpc_gss.ko ffffffffc1921c80 fld ffffffffc190f000 126976 /tmp/crash-anaysis.u0mms/modules/fld.ko ffffffffc1941ac0 fid ffffffffc192f000 126976 /tmp/crash-anaysis.u0mms/modules/fid.ko ffffffffc1961740 ec ffffffffc194f000 81920 /tmp/crash-anaysis.u0mms/modules/ec.ko ffffffffc19a1080 lmv ffffffffc1964000 372736 /tmp/crash-anaysis.u0mms/modules/lmv.ko ffffffffc1a422c0 osc ffffffffc19c0000 790528 /tmp/crash-anaysis.u0mms/modules/osc.ko ffffffffc1adaa00 lov ffffffffc1a82000 552960 /tmp/crash-anaysis.u0mms/modules/lov.ko ffffffffc1b54b80 mdc ffffffffc1b0a000 466944 /tmp/crash-anaysis.u0mms/modules/mdc.ko ffffffffc1b99000 mgc ffffffffc1b7d000 184320 /tmp/crash-anaysis.u0mms/modules/mgc.ko ffffffffc1bcc5c0 obdecho ffffffffc1bab000 225280 /tmp/crash-anaysis.u0mms/modules/obdecho.ko ffffffffc1c9d340 lfsck ffffffffc1be3000 1081344 /tmp/crash-anaysis.u0mms/modules/lfsck.ko ffffffffc1d6c240 lquota ffffffffc1cec000 786432 /tmp/crash-anaysis.u0mms/modules/lquota.ko ffffffffc1e17ac0 osd_zfs ffffffffc1dad000 655360 /tmp/crash-anaysis.u0mms/modules/osd_zfs.ko ffffffffc1eb1400 mgs ffffffffc1e4e000 626688 /tmp/crash-anaysis.u0mms/modules/mgs.ko ffffffffc1f63080 mdd ffffffffc1ee8000 745472 /tmp/crash-anaysis.u0mms/modules/mdd.ko ffffffffc20ad940 mdt ffffffffc1f9f000 1654784 /tmp/crash-anaysis.u0mms/modules/mdt.ko ffffffffc21df480 lod ffffffffc2134000 1052672 /tmp/crash-anaysis.u0mms/modules/lod.ko ffffffffc22a3a40 ofd ffffffffc2236000 679936 /tmp/crash-anaysis.u0mms/modules/ofd.ko ffffffffc2338f80 osp ffffffffc22dd000 573440 /tmp/crash-anaysis.u0mms/modules/osp.ko ffffffffc249e6c0 lustre ffffffffc236a000 1912832 /tmp/crash-anaysis.u0mms/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, 0xffff9c2df4d99c28) 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 839 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, 0xffff9c2df4fce5e8) 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 1024 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, 0xffff9c2de0b96d08) 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, 0xffff9c2de0bf02a8) 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 759 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 3646 total debug pages from 4 CPUs to /tmp/crash-anaysis.u0mms/lustre.bin