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.i3aWz/vmlinux [TAINTED] DUMPFILE: /exports/testreports/70067/testresults/sanity-compr-special4-zfs-rocky8.10_x86_64-rocky8.10_x86_64/oleg120-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Thu Sep 10 16:13:53 EDT 2026 UPTIME: 00:05:40 LOAD AVERAGE: 2.29, 1.43, 0.64 TASKS: 346 NODENAME: oleg120-server.virtnet RELEASE: 4.18.0rh8.10-debug VERSION: #2 SMP Mon Jul 14 01:24:22 EDT 2025 MACHINE: x86_64 (2400 Mhz) MEMORY: 4.1 GB PANIC: "BUG: unable to handle kernel NULL pointer dereference at 000000000000002e" PID: 6695 COMMAND: "ll_ost_io00_002" TASK: ffff9bee8ffbcf80 [THREAD_INFO: ffff9bee8ffbcf80] 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 crc32c_intel 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 i2c_piix4 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 ghash_clmulni_intel module mod: cannot find or load object file for crc32_pclmul module mod: cannot find or load object file for squashfs 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 dns_resolver 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 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 ffffffffc0570740 libcfs ffffffffc0550000 225280 /tmp/crash-anaysis.i3aWz/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc0f923c0 lnet ffffffffc0eb7000 1490944 /tmp/crash-anaysis.i3aWz/modules/lnet.ko ffffffffc104d900 ksocklnd ffffffffc1024000 270336 /tmp/crash-anaysis.i3aWz/modules/ksocklnd.ko ffffffffc11ae180 obdclass ffffffffc1067000 4415488 /tmp/crash-anaysis.i3aWz/modules/obdclass.ko ffffffffc172a0c0 ptlrpc ffffffffc149e000 4173824 /tmp/crash-anaysis.i3aWz/modules/ptlrpc.ko ffffffffc18e8880 ptlrpc_gss ffffffffc189a000 524288 /tmp/crash-anaysis.i3aWz/modules/ptlrpc_gss.ko ffffffffc192dc80 fld ffffffffc191b000 126976 /tmp/crash-anaysis.i3aWz/modules/fld.ko ffffffffc194dac0 fid ffffffffc193b000 126976 /tmp/crash-anaysis.i3aWz/modules/fid.ko ffffffffc196d740 ec ffffffffc195b000 81920 /tmp/crash-anaysis.i3aWz/modules/ec.ko ffffffffc19ad080 lmv ffffffffc1970000 372736 /tmp/crash-anaysis.i3aWz/modules/lmv.ko ffffffffc1a4f480 osc ffffffffc19cc000 794624 /tmp/crash-anaysis.i3aWz/modules/osc.ko ffffffffc1ae7b00 lov ffffffffc1a8f000 552960 /tmp/crash-anaysis.i3aWz/modules/lov.ko ffffffffc1b61b80 mdc ffffffffc1b17000 466944 /tmp/crash-anaysis.i3aWz/modules/mdc.ko ffffffffc1ba6000 mgc ffffffffc1b8a000 184320 /tmp/crash-anaysis.i3aWz/modules/mgc.ko ffffffffc1bd95c0 obdecho ffffffffc1bb8000 225280 /tmp/crash-anaysis.i3aWz/modules/obdecho.ko ffffffffc1caa340 lfsck ffffffffc1bf0000 1081344 /tmp/crash-anaysis.i3aWz/modules/lfsck.ko ffffffffc1d79240 lquota ffffffffc1cf9000 786432 /tmp/crash-anaysis.i3aWz/modules/lquota.ko ffffffffc1e25b80 osd_zfs ffffffffc1dba000 659456 /tmp/crash-anaysis.i3aWz/modules/osd_zfs.ko ffffffffc1ebf400 mgs ffffffffc1e5c000 626688 /tmp/crash-anaysis.i3aWz/modules/mgs.ko ffffffffc1f710c0 mdd ffffffffc1ef6000 745472 /tmp/crash-anaysis.i3aWz/modules/mdd.ko ffffffffc20bb900 mdt ffffffffc1fad000 1654784 /tmp/crash-anaysis.i3aWz/modules/mdt.ko ffffffffc21ef900 lod ffffffffc2142000 1064960 /tmp/crash-anaysis.i3aWz/modules/lod.ko ffffffffc22b6e40 ofd ffffffffc2247000 692224 /tmp/crash-anaysis.i3aWz/modules/ofd.ko ffffffffc234cf80 osp ffffffffc22f1000 573440 /tmp/crash-anaysis.i3aWz/modules/osp.ko ffffffffc24b4780 lustre ffffffffc237e000 1925120 /tmp/crash-anaysis.i3aWz/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, 0xffff9bee852ea788) 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 129 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, 0xffff9bee85144ee8) 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 111 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, 0xffff9bee85546688) 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 151 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, 0xffff9beea1c66c28) 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 131 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 522 total debug pages from 4 CPUs to /tmp/crash-anaysis.i3aWz/lustre.bin