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.LGPH1/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68868/testresults/sanity-lfsck-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg133-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Thu Aug 27 11:27:36 EDT 2026 UPTIME: 00:48:36 LOAD AVERAGE: 2.13, 1.91, 1.76 TASKS: 350 NODENAME: oleg133-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: 82695 COMMAND: "ll_ost_io00_001" TASK: ffff94caa7164f80 [THREAD_INFO: ffff94caa7164f80] 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 intel_rapl_msr 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 ata_generic 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 i2c_piix4 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 pcspkr 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 dns_resolver module mod: cannot find or load object file for intel_rapl_common 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 ffffffffc078b740 libcfs ffffffffc076b000 225280 /tmp/crash-anaysis.LGPH1/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc11ad3c0 lnet ffffffffc10d2000 1490944 /tmp/crash-anaysis.LGPH1/modules/lnet.ko ffffffffc1268900 ksocklnd ffffffffc123f000 270336 /tmp/crash-anaysis.LGPH1/modules/ksocklnd.ko ffffffffc13c7a80 obdclass ffffffffc1282000 4403200 /tmp/crash-anaysis.LGPH1/modules/obdclass.ko ffffffffc19420c0 ptlrpc ffffffffc16b6000 4173824 /tmp/crash-anaysis.LGPH1/modules/ptlrpc.ko ffffffffc1b00880 ptlrpc_gss ffffffffc1ab2000 524288 /tmp/crash-anaysis.LGPH1/modules/ptlrpc_gss.ko ffffffffc1b45c80 fld ffffffffc1b33000 126976 /tmp/crash-anaysis.LGPH1/modules/fld.ko ffffffffc1b65ac0 fid ffffffffc1b53000 126976 /tmp/crash-anaysis.LGPH1/modules/fid.ko ffffffffc1b85740 ec ffffffffc1b73000 81920 /tmp/crash-anaysis.LGPH1/modules/ec.ko ffffffffc1bc5080 lmv ffffffffc1b88000 372736 /tmp/crash-anaysis.LGPH1/modules/lmv.ko ffffffffc1c662c0 osc ffffffffc1be4000 790528 /tmp/crash-anaysis.LGPH1/modules/osc.ko ffffffffc1cfea00 lov ffffffffc1ca6000 552960 /tmp/crash-anaysis.LGPH1/modules/lov.ko ffffffffc1d78b80 mdc ffffffffc1d2e000 466944 /tmp/crash-anaysis.LGPH1/modules/mdc.ko ffffffffc1dbd000 mgc ffffffffc1da1000 184320 /tmp/crash-anaysis.LGPH1/modules/mgc.ko ffffffffc1df05c0 obdecho ffffffffc1dcf000 225280 /tmp/crash-anaysis.LGPH1/modules/obdecho.ko ffffffffc1ec1340 lfsck ffffffffc1e07000 1081344 /tmp/crash-anaysis.LGPH1/modules/lfsck.ko ffffffffc1f90240 lquota ffffffffc1f10000 786432 /tmp/crash-anaysis.LGPH1/modules/lquota.ko ffffffffc203bac0 osd_zfs ffffffffc1fd1000 655360 /tmp/crash-anaysis.LGPH1/modules/osd_zfs.ko ffffffffc20d5400 mgs ffffffffc2072000 626688 /tmp/crash-anaysis.LGPH1/modules/mgs.ko ffffffffc2187080 mdd ffffffffc210c000 745472 /tmp/crash-anaysis.LGPH1/modules/mdd.ko ffffffffc22d1940 mdt ffffffffc21c3000 1654784 /tmp/crash-anaysis.LGPH1/modules/mdt.ko ffffffffc2403480 lod ffffffffc2358000 1052672 /tmp/crash-anaysis.LGPH1/modules/lod.ko ffffffffc24c7a40 ofd ffffffffc245a000 679936 /tmp/crash-anaysis.LGPH1/modules/ofd.ko ffffffffc255cf80 osp ffffffffc2501000 573440 /tmp/crash-anaysis.LGPH1/modules/osp.ko ffffffffc26c26c0 lustre ffffffffc258e000 1912832 /tmp/crash-anaysis.LGPH1/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, 0xffff94ca84fb7008) 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 836 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, 0xffff94ca872edd68) 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 948 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, 0xffff94cab6f74da8) 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 921 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, 0xffff94ca82c1fae8) 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 798 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_trace_pages(0, 5, 0xffff94ca8e772d28) 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 1 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_trace_pages(1, 5, 0xffff94c98d471808) 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 1 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_trace_pages(2, 5, 0xffff94ca92514168) 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 1 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_trace_pages(3, 5, 0xffff94c988709c08) 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 1 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 3507 total debug pages from 4 CPUs to /tmp/crash-anaysis.LGPH1/lustre.bin