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.Q2y7G/vmlinux [TAINTED] DUMPFILE: /exports/testreports/68864/testresults/sanity3-zfs-rocky8.10_x86_64-rocky8.10_x86_64-retry1/oleg102-server-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Thu Aug 27 13:08:22 EDT 2026 UPTIME: 02:36:31 LOAD AVERAGE: 1.29, 1.44, 1.60 TASKS: 402 NODENAME: oleg102-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: 98435 COMMAND: "ll_ost_io00_015" TASK: ffff93e1b8714f80 [THREAD_INFO: ffff93e1b8714f80] 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 ata_generic 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 intel_rapl_msr module mod: cannot find or load object file for serio_raw module mod: cannot find or load object file for ata_piix module mod: cannot find or load object file for ghash_clmulni_intel module mod: cannot find or load object file for pcspkr 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 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 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 ffffffffc077f740 libcfs ffffffffc075f000 225280 /tmp/crash-anaysis.Q2y7G/modules/libcfs.ko mod: cannot find or load object file for spl module mod: cannot find or load object file for zfs module ffffffffc11a13c0 lnet ffffffffc10c6000 1490944 /tmp/crash-anaysis.Q2y7G/modules/lnet.ko ffffffffc125c900 ksocklnd ffffffffc1233000 270336 /tmp/crash-anaysis.Q2y7G/modules/ksocklnd.ko ffffffffc13bba80 obdclass ffffffffc1276000 4403200 /tmp/crash-anaysis.Q2y7G/modules/obdclass.ko ffffffffc19360c0 ptlrpc ffffffffc16aa000 4173824 /tmp/crash-anaysis.Q2y7G/modules/ptlrpc.ko ffffffffc1af4880 ptlrpc_gss ffffffffc1aa6000 524288 /tmp/crash-anaysis.Q2y7G/modules/ptlrpc_gss.ko ffffffffc1b39c80 fld ffffffffc1b27000 126976 /tmp/crash-anaysis.Q2y7G/modules/fld.ko ffffffffc1b59ac0 fid ffffffffc1b47000 126976 /tmp/crash-anaysis.Q2y7G/modules/fid.ko ffffffffc1b79740 ec ffffffffc1b67000 81920 /tmp/crash-anaysis.Q2y7G/modules/ec.ko ffffffffc1bb9080 lmv ffffffffc1b7c000 372736 /tmp/crash-anaysis.Q2y7G/modules/lmv.ko ffffffffc1c5a2c0 osc ffffffffc1bd8000 790528 /tmp/crash-anaysis.Q2y7G/modules/osc.ko ffffffffc1cf2a00 lov ffffffffc1c9a000 552960 /tmp/crash-anaysis.Q2y7G/modules/lov.ko ffffffffc1d6cb80 mdc ffffffffc1d22000 466944 /tmp/crash-anaysis.Q2y7G/modules/mdc.ko ffffffffc1db1000 mgc ffffffffc1d95000 184320 /tmp/crash-anaysis.Q2y7G/modules/mgc.ko ffffffffc1de45c0 obdecho ffffffffc1dc3000 225280 /tmp/crash-anaysis.Q2y7G/modules/obdecho.ko ffffffffc1eb5340 lfsck ffffffffc1dfb000 1081344 /tmp/crash-anaysis.Q2y7G/modules/lfsck.ko ffffffffc1f84240 lquota ffffffffc1f04000 786432 /tmp/crash-anaysis.Q2y7G/modules/lquota.ko ffffffffc202fac0 osd_zfs ffffffffc1fc5000 655360 /tmp/crash-anaysis.Q2y7G/modules/osd_zfs.ko ffffffffc20c9400 mgs ffffffffc2066000 626688 /tmp/crash-anaysis.Q2y7G/modules/mgs.ko ffffffffc217b080 mdd ffffffffc2100000 745472 /tmp/crash-anaysis.Q2y7G/modules/mdd.ko ffffffffc22c5940 mdt ffffffffc21b7000 1654784 /tmp/crash-anaysis.Q2y7G/modules/mdt.ko ffffffffc23f7480 lod ffffffffc234c000 1052672 /tmp/crash-anaysis.Q2y7G/modules/lod.ko ffffffffc24bba40 ofd ffffffffc244e000 679936 /tmp/crash-anaysis.Q2y7G/modules/ofd.ko ffffffffc2550f80 osp ffffffffc24f5000 573440 /tmp/crash-anaysis.Q2y7G/modules/osp.ko ffffffffc26b66c0 lustre ffffffffc2582000 1912832 /tmp/crash-anaysis.Q2y7G/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, 0xffff93e08625c668) 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 1024 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, 0xffff93e085ae7c88) 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, 0xffff93e087fcc608) 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, 0xffff93e1a23ad348) 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 1024 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, 0xffff93e18ac60e08) 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 128 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, 0xffff93e190e82508) 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 128 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, 0xffff93e1a55c2308) 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 128 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, 0xffff93e1829f6388) 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 128 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 4608 total debug pages from 4 CPUs to /tmp/crash-anaysis.Q2y7G/lustre.bin