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.Hsm4O/vmlinux [TAINTED] DUMPFILE: /exports/testreports/50430/testresults/replay-single-zfs-centos7_x86_64-centos7_x86_64/oleg407-client-vmcore [PARTIAL DUMP] CPUS: 4 DATE: Tue Apr 1 14:11:30 EDT 2025 UPTIME: 00:58:07 LOAD AVERAGE: 0.53, 0.47, 0.33 TASKS: 166 NODENAME: oleg407-client.virtnet RELEASE: 3.10.0-7.9-debug VERSION: #1 SMP Sat Mar 26 23:28:42 EDT 2022 MACHINE: x86_64 (2400 Mhz) MEMORY: 4 GB PANIC: "BUG: unable to handle kernel NULL pointer dereference at 000000000000012e" PID: 20796 COMMAND: "dd" TASK: ffff88012e72e660 [THREAD_INFO: ffff8800a8b78000] 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 serio_raw 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 pata_acpi module mod: cannot find or load object file for ata_generic module mod: cannot find or load object file for mbcache 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 crc32c_intel module mod: cannot find or load object file for ip_tables module mod: cannot find or load object file for binfmt_misc module mod: cannot find or load object file for crct10dif_common module mod: cannot find or load object file for jbd2 module mod: cannot find or load object file for ext4 module mod: cannot find or load object file for ghash_clmulni_intel module mod: cannot find or load object file for i2c_core module mod: cannot find or load object file for i2c_piix4 module mod: cannot find or load object file for ablk_helper module mod: cannot find or load object file for irqbypass module mod: cannot find or load object file for crct10dif_generic module mod: cannot find or load object file for iosf_mbi module mod: cannot find or load object file for lrw module mod: cannot find or load object file for glue_helper module mod: cannot find or load object file for cryptd module mod: cannot find or load object file for crc_t10dif module mod: cannot find or load object file for gf128mul module mod: cannot find or load object file for crc32_pclmul module mod: cannot find or load object file for rpcsec_gss_krb5 module MODULE NAME BASE SIZE OBJECT FILE ffffffffa01ad1a0 fid ffffffffa019f000 84843 /tmp/crash-anaysis.Hsm4O/modules/fid.ko ffffffffa01b8380 ost ffffffffa01b5000 19298 /tmp/crash-anaysis.Hsm4O/modules/ost.ko mod: cannot find or load object file for edac_core module mod: cannot find or load object file for aesni_intel module mod: cannot find or load object file for sb_edac module ffffffffa02177e0 fld ffffffffa0209000 88713 /tmp/crash-anaysis.Hsm4O/modules/fld.ko ffffffffa0244360 libcfs ffffffffa022f000 132619 /tmp/crash-anaysis.Hsm4O/modules/libcfs.ko mod: cannot find or load object file for squashfs module mod: cannot find or load object file for kvm module ffffffffa03b5020 lnet ffffffffa031f000 958750 /tmp/crash-anaysis.Hsm4O/modules/lnet.ko ffffffffa041d920 mgc ffffffffa040b000 109376 /tmp/crash-anaysis.Hsm4O/modules/mgc.ko ffffffffa045b8a0 ksocklnd ffffffffa043d000 182768 /tmp/crash-anaysis.Hsm4O/modules/ksocklnd.ko ffffffffa04a3de0 ptlrpc_gss ffffffffa046b000 342063 /tmp/crash-anaysis.Hsm4O/modules/ptlrpc_gss.ko ffffffffa04eb860 lmv ffffffffa04c0000 234767 /tmp/crash-anaysis.Hsm4O/modules/lmv.ko ffffffffa0514120 obdecho ffffffffa04fb000 151561 /tmp/crash-anaysis.Hsm4O/modules/obdecho.ko mod: cannot find or load object file for kvm_intel module ffffffffa0626580 obdclass ffffffffa0559000 2652163 /tmp/crash-anaysis.Hsm4O/modules/obdclass.ko ffffffffa0992aa0 ptlrpc ffffffffa07e2000 2543606 /tmp/crash-anaysis.Hsm4O/modules/ptlrpc.ko ffffffffa0a9bd40 osc ffffffffa0a50000 427843 /tmp/crash-anaysis.Hsm4O/modules/osc.ko ffffffffa0af4660 lov ffffffffa0aba000 332217 /tmp/crash-anaysis.Hsm4O/modules/lov.ko ffffffffa0b3f8a0 mdc ffffffffa0b0d000 276564 /tmp/crash-anaysis.Hsm4O/modules/mdc.ko ffffffffa0be9240 lfsck ffffffffa0b52000 782830 /tmp/crash-anaysis.Hsm4O/modules/lfsck.ko ffffffffa0c8b280 lquota ffffffffa0c35000 472402 /tmp/crash-anaysis.Hsm4O/modules/lquota.ko ffffffffa0cee120 mgs ffffffffa0caa000 373732 /tmp/crash-anaysis.Hsm4O/modules/mgs.ko ffffffffa0d64000 mdd ffffffffa0d07000 497881 /tmp/crash-anaysis.Hsm4O/modules/mdd.ko ffffffffa0e3bce0 mdt ffffffffa0d82000 1023484 /tmp/crash-anaysis.Hsm4O/modules/mdt.ko ffffffffa0ef6a60 lod ffffffffa0e7d000 660609 /tmp/crash-anaysis.Hsm4O/modules/lod.ko ffffffffa0f626c0 ofd ffffffffa0f20000 361788 /tmp/crash-anaysis.Hsm4O/modules/ofd.ko ffffffffa0fb82a0 osp ffffffffa0f7a000 350313 /tmp/crash-anaysis.Hsm4O/modules/osp.ko ffffffffa109c9c0 lustre ffffffffa0fd1000 1105717 /tmp/crash-anaysis.Hsm4O/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, 0xffff8800a83af428) 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, 0xffff8800b591a8e8) 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, 0xffff8800a831e188) 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, 0xffff88012abc4968) 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_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 4096 total debug pages from 4 CPUs to /tmp/crash-anaysis.Hsm4O/lustre.bin