Discussion:
[Bug 1765660] [NEW] Ubuntu 18.04 [ briggs ]: "ipcs" command fails with error "invalid structure member offset" in crash prompt.
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bugproxy
2018-04-20 10:20:41 UTC
Permalink
Public bug reported:

== Comment: #0 - PAVITHRA R. PRAKASH <> - 2018-03-29 01:14:47 ==
---Problem Description---

Ubuntu 18.04: "ipcs" command fails with error "invalid structure member
offset" in crash prompt.

---Environment--

System Name : ltc-briggs2
Model/Type : P8
Platform : BML

---Uname output---

***@ltc-briggs2:~# uname -a
Linux ltc-briggs2 4.15.0-13-generic #14-Ubuntu SMP Sat Mar 17 13:43:15 UTC 2018 ppc64le ppc64le ppc64le GNU/Linux


---Steps to reproduce--

1. Configure kdump.
2. Trigger crash
3. run crash on captured dump

---Logs----

***@ltc-briggs2:~# dpkg -l|grep makedumpfile
ii makedumpfile 1:1.6.3-1 ppc64el VMcore extraction tool
***@ltc-briggs2:~# dpkg -l|grep crash
ii apport 2.20.9-0ubuntu1 all automatically generate crash reports for debugging
ii crash 7.2.1-1 ppc64el kernel debugging utility, allowing gdb like syntax
ii kdump-tools 1:1.6.3-1 ppc64el scripts and tools for automating kdump (Linux crash dumps)
ii python3-apport 2.20.9-0ubuntu1 all Python 3 library for Apport crash report handling
***@ltc-briggs2:~# dpkg -l|grep kexec
ii kexec-tools 1:2.0.16-1ubuntu1 ppc64el tools to support fast kexec reboots
***@ltc-briggs2:~#


.0-13-generic dump.201803272257 03272257# crash /usr/lib/debug/boot/vmlinux-4.15.

crash 7.2.1
Copyright (C) 2002-2017 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 NEC Corporation
Copyright (C) 1999, 2002, 2007 Silicon Graphics, Inc.
Copyright (C) 1999, 2000, 2001, 2002 Mission Critical Linux, 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.

GNU gdb (GDB) 7.6
Copyright (C) 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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 "powerpc64le-unknown-linux-gnu"...

KERNEL: /usr/lib/debug/boot/vmlinux-4.15.0-13-generic
DUMPFILE: dump.201803272257 [PARTIAL DUMP]
CPUS: 160
DATE: Tue Mar 27 22:56:58 2018
UPTIME: 00:04:07
LOAD AVERAGE: 1.06, 0.53, 0.20
TASKS: 1734
NODENAME: ltc-briggs2
RELEASE: 4.15.0-13-generic
VERSION: #14-Ubuntu SMP Sat Mar 17 13:43:15 UTC 2018
MACHINE: ppc64le (2926 Mhz)
MEMORY: 512 GB
PANIC: "sysrq: SysRq : Trigger a crash"
PID: 7420
COMMAND: "bash"
TASK: c000003e56c7c600 [THREAD_INFO: c000003e56cb0000]
CPU: 41
STATE: TASK_RUNNING (SYSRQ)

crash> ?

* files mach repeat timer
alias foreach mod runq tree
ascii fuser mount search union
bt gdb net set vm
btop help p sig vtop
dev ipcs ps struct waitq
dis irq pte swap whatis
eval kmem ptob sym wr
exit list ptov sys q
extend log rd task

crash version: 7.2.1 gdb version: 7.6
For help on any command above, enter "help <command>".
For help on input options, enter "help input".
For help on output options, enter "help output".

crash> ipcs
SHMID_KERNEL KEY SHMID UID PERMS BYTES NATTCH STATUS

ipcs: invalid structure member offset: idr_top
FILE: ipcs.c LINE: 628 FUNCTION: idr_find()

[/usr/bin/crash] error trace: 70374748930 => 703747482d8 => 703746e8e98
=> 703745b1488

ipcs: invalid structure member offset: idr_top
FILE: ipcs.c LINE: 628 FUNCTION: idr_find()

crash> q

== Comment: #3 - PAVITHRA R. PRAKASH <> - 2018-04-09 00:36:52 ==
(In reply to comment #1)
Hi Pavithra,
Have you checked in older kernel versions, whether "ipcs" command
was working ...I think, it is because there were too many changes
to kernel's IPC code over several kernel versions..possibly crash tool
don't have the updated changes w.r.t new kernel IPC code
char *help_ipcs[] = {
"ipcs",
"System V IPC facilities",
"[-smMq] [-n pid|task] [id | addr]",
" This command provides information on the System V IPC facilities. With
no",
" arguments, the command will display kernel usage of all three
factilities.",
" ",
" -s show semaphore arrays.",
" -m show shared memory segments.",
" -M show shared memory segments with additional details.",
" -q show message queues.",
" id show the data associated with this resource ID.",
" addr show the data associated with this virtual address of a",
" shmid_kernel, sem_array or msq_queue.",
"",
" For kernels supporting namespaces, the -n option may be used to",
" display the IPC facilities with respect to the namespace of a",
" specified task:\n",
" -n pid a process PID.",
" -n task a hexadecimal task_struct pointer.",
Thanks!!
Issue is observed even with old kernel.

KERNEL: /usr/lib/debug/boot/vmlinux-4.15.0-12-generic
DUMPFILE: dump.201804090031 [PARTIAL DUMP]
CPUS: 160
DATE: Mon Apr 9 00:30:53 2018
UPTIME: 00:04:24
LOAD AVERAGE: 2.75, 1.56, 0.64
TASKS: 1738
NODENAME: ltc-briggs2
RELEASE: 4.15.0-12-generic
VERSION: #13-Ubuntu SMP Wed Mar 7 21:37:03 UTC 2018
MACHINE: ppc64le (2926 Mhz)
MEMORY: 512 GB
PANIC: "sysrq: SysRq : Trigger a crash"
PID: 6995
COMMAND: "bash"
TASK: c000003f70dcfd00 [THREAD_INFO: c000003f70e78000]
CPU: 64
STATE: TASK_RUNNING (SYSRQ)

crash> ipcs
SHMID_KERNEL KEY SHMID UID PERMS BYTES NATTCH STATUS

ipcs: invalid structure member offset: idr_top
FILE: ipcs.c LINE: 628 FUNCTION: idr_find()

[/usr/bin/crash] error trace: 198c7e38930 => 198c7e382d8 => 198c7dd8e98
=> 198c7ca1488

ipcs: invalid structure member offset: idr_top
FILE: ipcs.c LINE: 628 FUNCTION: idr_find()

crash>

---------------------------------------------------------------------------------------------------------------------------------


crash> ipcs
SHMID_KERNEL KEY SHMID UID PERMS BYTES NATTCH STATUS

ipcs: invalid structure member offset: idr_top
FILE: ipcs.c LINE: 628 FUNCTION: idr_find()

[/usr/bin/crash] error trace: 69b16c28930 => 69b16c282d8 => 69b16bc8e98
=> 69b16a91488

ipcs: invalid structure member offset: idr_top
FILE: ipcs.c LINE: 628 FUNCTION: idr_find()

crash> ipcs -s
SEM_ARRAY KEY SEMID UID PERMS NSEMS

ipcs: invalid structure member offset: idr_top
FILE: ipcs.c LINE: 628 FUNCTION: idr_find()

[/usr/bin/crash] error trace: 69b16c2ace0 => 69b16c282d8 => 69b16bc8e98
=> 69b16a91488

ipcs: invalid structure member offset: idr_top
FILE: ipcs.c LINE: 628 FUNCTION: idr_find()

crash> ipcs -m
SHMID_KERNEL KEY SHMID UID PERMS BYTES NATTCH STATUS

ipcs: invalid structure member offset: idr_top
FILE: ipcs.c LINE: 628 FUNCTION: idr_find()

[/usr/bin/crash] error trace: 69b16c28930 => 69b16c282d8 => 69b16bc8e98
=> 69b16a91488

ipcs: invalid structure member offset: idr_top
FILE: ipcs.c LINE: 628 FUNCTION: idr_find()

crash> ipcs -M

ipcs: invalid structure member offset: idr_top
FILE: ipcs.c LINE: 628 FUNCTION: idr_find()

[/usr/bin/crash] error trace: 69b16c28930 => 69b16c282d8 => 69b16bc8e98
=> 69b16a91488

ipcs: invalid structure member offset: idr_top
FILE: ipcs.c LINE: 628 FUNCTION: idr_find()

crash> ipcs -q
MSG_QUEUE KEY MSQID UID PERMS USED-BYTES MESSAGES
(none allocated)

** Affects: ubuntu-power-systems
Importance: High
Assignee: Canonical Kernel Team (canonical-kernel-team)
Status: New

** Affects: crash (Ubuntu)
Importance: Undecided
Assignee: Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage)
Status: New


** Tags: architecture-ppc64le bugnameltc-166199 severity-high targetmilestone-inin1804 triage-g

** Tags added: architecture-ppc64le bugnameltc-166199 severity-high
targetmilestone-inin1804

** Changed in: ubuntu
Assignee: (unassigned) => Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage)

** Package changed: ubuntu => crash (Ubuntu)
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Title:
Ubuntu 18.04 [ briggs ]: "ipcs" command fails with error "invalid
structure member offset" in crash prompt.

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Andrew Cloke
2018-04-20 10:24:21 UTC
Permalink
** Also affects: ubuntu-power-systems
Importance: Undecided
Status: New

** Changed in: ubuntu-power-systems
Importance: Undecided => High

** Changed in: ubuntu-power-systems
Assignee: (unassigned) => Canonical Kernel Team (canonical-kernel-team)

** Tags added: triage-g
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Title:
Ubuntu 18.04 [ briggs ]: "ipcs" command fails with error "invalid
structure member offset" in crash prompt.

To manage notifications about this bug go to:
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bugproxy
2018-04-20 15:40:12 UTC
Permalink
------- Comment From ***@br.ibm.com 2018-04-20 11:30 EDT-------
The ipr structure was removed in the following commit in the kernel:

commit 0a835c4f090af2c76fc2932c539c3b32fd21fbbb
Author: Matthew Wilcox <***@microsoft.com>
Date: Tue Dec 20 10:27:56 2016 -0500

Reimplement IDR and IDA using the radix tree
The IDR is very similar to the radix tree. It has some functionality that
the radix tree did not have (alloc next free, cyclic allocation, a
callback-based for_each, destroy tree), which is readily implementable on
top of the radix tree. A few small changes were needed in order to use a
tag to represent nodes with free space below them. More extensive
changes were needed to support storing NULL as a valid entry in an IDR.
Plain radix trees still interpret NULL as a not-present entry.
The IDA is reimplemented as a client of the newly enhanced radix tree. As
in the current implementation, it uses a bitmap at the last level of the
tree.

It seems that crash didn't adjust to this change and this is causing
this following error.
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Title:
Ubuntu 18.04 [ briggs ]: "ipcs" command fails with error "invalid
structure member offset" in crash prompt.

To manage notifications about this bug go to:
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Frank Heimes
2018-04-20 17:37:59 UTC
Permalink
** Changed in: ubuntu-power-systems
Status: New => Triaged
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Title:
Ubuntu 18.04 [ briggs ]: "ipcs" command fails with error "invalid
structure member offset" in crash prompt.

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Manoj Iyer
2018-04-23 14:31:40 UTC
Permalink
** Changed in: crash (Ubuntu)
Assignee: Ubuntu on IBM Power Systems Bug Triage (ubuntu-power-triage) => Canonical Kernel Team (canonical-kernel-team)

** Changed in: crash (Ubuntu)
Importance: Undecided => High
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Title:
Ubuntu 18.04 [ briggs ]: "ipcs" command fails with error "invalid
structure member offset" in crash prompt.

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bugproxy
2018-04-24 19:10:15 UTC
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------- Comment From ***@br.ibm.com 2018-04-24 15:08 EDT-------
Created a bug upstream at https://github.com/crash-utility/crash/issues/23

** Bug watch added: github.com/crash-utility/crash/issues #23
https://github.com/crash-utility/crash/issues/23
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Title:
Ubuntu 18.04 [ briggs ]: "ipcs" command fails with error "invalid
structure member offset" in crash prompt.

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bugproxy
2018-04-30 15:05:01 UTC
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------- Comment From ***@br.ibm.com 2018-04-30 10:50 EDT-------
There is a fix made available upstream now. We basically need to cherry pick it:

https://github.com/crash-
utility/crash/commit/759dc0c50dc6cc3199e56be57cb57d41812b0397
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Title:
Ubuntu 18.04 [ briggs ]: "ipcs" command fails with error "invalid
structure member offset" in crash prompt.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu-power-systems/+bug/1765660/+subscriptions
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Thadeu Lima de Souza Cascardo
2018-05-15 13:33:43 UTC
Permalink
** Description changed:

+ [Impact]
+ Some analysis won't be possible on new kernels (hwe-edge on xenial, for example; or the standard bionic kernel).
+
+ [Test Case]
+ The ipcs command has been run after the fix was applied to crash, on a live amd64 system, with success.
+
+ [Regression Potential]
+ Analysis of crashed kernels will require that the crash file be moved to a system where crash doesn't have the regression. The patch, however, should touch only the broken command, and has been tested.
+
+ ---------------------------------
+
+
== Comment: #0 - PAVITHRA R. PRAKASH <> - 2018-03-29 01:14:47 ==
---Problem Description---

Ubuntu 18.04: "ipcs" command fails with error "invalid structure member
offset" in crash prompt.

---Environment--

System Name : ltc-briggs2
Model/Type : P8
Platform : BML

---Uname output---

***@ltc-briggs2:~# uname -a
Linux ltc-briggs2 4.15.0-13-generic #14-Ubuntu SMP Sat Mar 17 13:43:15 UTC 2018 ppc64le ppc64le ppc64le GNU/Linux
-

---Steps to reproduce--

1. Configure kdump.
2. Trigger crash
3. run crash on captured dump

---Logs----

***@ltc-briggs2:~# dpkg -l|grep makedumpfile
ii makedumpfile 1:1.6.3-1 ppc64el VMcore extraction tool
***@ltc-briggs2:~# dpkg -l|grep crash
ii apport 2.20.9-0ubuntu1 all automatically generate crash reports for debugging
ii crash 7.2.1-1 ppc64el kernel debugging utility, allowing gdb like syntax
ii kdump-tools 1:1.6.3-1 ppc64el scripts and tools for automating kdump (Linux crash dumps)
ii python3-apport 2.20.9-0ubuntu1 all Python 3 library for Apport crash report handling
***@ltc-briggs2:~# dpkg -l|grep kexec
ii kexec-tools 1:2.0.16-1ubuntu1 ppc64el tools to support fast kexec reboots
- ***@ltc-briggs2:~#
-
-
- .0-13-generic dump.201803272257 03272257# crash /usr/lib/debug/boot/vmlinux-4.15.
+ ***@ltc-briggs2:~#
+
+ .0-13-generic dump.201803272257 03272257# crash
+ /usr/lib/debug/boot/vmlinux-4.15.

crash 7.2.1
Copyright (C) 2002-2017 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 NEC Corporation
Copyright (C) 1999, 2002, 2007 Silicon Graphics, Inc.
Copyright (C) 1999, 2000, 2001, 2002 Mission Critical Linux, 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.
-
+
GNU gdb (GDB) 7.6
Copyright (C) 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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 "powerpc64le-unknown-linux-gnu"...

- KERNEL: /usr/lib/debug/boot/vmlinux-4.15.0-13-generic
- DUMPFILE: dump.201803272257 [PARTIAL DUMP]
- CPUS: 160
- DATE: Tue Mar 27 22:56:58 2018
- UPTIME: 00:04:07
+       KERNEL: /usr/lib/debug/boot/vmlinux-4.15.0-13-generic
+     DUMPFILE: dump.201803272257 [PARTIAL DUMP]
+         CPUS: 160
+         DATE: Tue Mar 27 22:56:58 2018
+       UPTIME: 00:04:07
LOAD AVERAGE: 1.06, 0.53, 0.20
- TASKS: 1734
- NODENAME: ltc-briggs2
- RELEASE: 4.15.0-13-generic
- VERSION: #14-Ubuntu SMP Sat Mar 17 13:43:15 UTC 2018
- MACHINE: ppc64le (2926 Mhz)
- MEMORY: 512 GB
- PANIC: "sysrq: SysRq : Trigger a crash"
- PID: 7420
- COMMAND: "bash"
- TASK: c000003e56c7c600 [THREAD_INFO: c000003e56cb0000]
- CPU: 41
- STATE: TASK_RUNNING (SYSRQ)
+        TASKS: 1734
+     NODENAME: ltc-briggs2
+      RELEASE: 4.15.0-13-generic
+      VERSION: #14-Ubuntu SMP Sat Mar 17 13:43:15 UTC 2018
+      MACHINE: ppc64le (2926 Mhz)
+       MEMORY: 512 GB
+        PANIC: "sysrq: SysRq : Trigger a crash"
+          PID: 7420
+      COMMAND: "bash"
+         TASK: c000003e56c7c600 [THREAD_INFO: c000003e56cb0000]
+          CPU: 41
+        STATE: TASK_RUNNING (SYSRQ)

crash> ?

- * files mach repeat timer
- alias foreach mod runq tree
- ascii fuser mount search union
- bt gdb net set vm
- btop help p sig vtop
- dev ipcs ps struct waitq
- dis irq pte swap whatis
- eval kmem ptob sym wr
- exit list ptov sys q
- extend log rd task
+ * files mach repeat timer
+ alias foreach mod runq tree
+ ascii fuser mount search union
+ bt gdb net set vm
+ btop help p sig vtop
+ dev ipcs ps struct waitq
+ dis irq pte swap whatis
+ eval kmem ptob sym wr
+ exit list ptov sys q
+ extend log rd task

crash version: 7.2.1 gdb version: 7.6
For help on any command above, enter "help <command>".
For help on input options, enter "help input".
For help on output options, enter "help output".

crash> ipcs
SHMID_KERNEL KEY SHMID UID PERMS BYTES NATTCH STATUS

ipcs: invalid structure member offset: idr_top
- FILE: ipcs.c LINE: 628 FUNCTION: idr_find()
+       FILE: ipcs.c LINE: 628 FUNCTION: idr_find()

[/usr/bin/crash] error trace: 70374748930 => 703747482d8 => 703746e8e98
=> 703745b1488

ipcs: invalid structure member offset: idr_top
- FILE: ipcs.c LINE: 628 FUNCTION: idr_find()
+       FILE: ipcs.c LINE: 628 FUNCTION: idr_find()

crash> q

== Comment: #3 - PAVITHRA R. PRAKASH <> - 2018-04-09 00:36:52 ==
(In reply to comment #1)
Hi Pavithra,
- >
- > Have you checked in older kernel versions, whether "ipcs" command
+ >
+ > Have you checked in older kernel versions, whether "ipcs" command
was working ...I think, it is because there were too many changes
to kernel's IPC code over several kernel versions..possibly crash tool
- > don't have the updated changes w.r.t new kernel IPC code
- >
+ > don't have the updated changes w.r.t new kernel IPC code
+ >
char *help_ipcs[] = {
"ipcs",
"System V IPC facilities",
"[-smMq] [-n pid|task] [id | addr]",
- >
+ >
" This command provides information on the System V IPC facilities. With
no",
" arguments, the command will display kernel usage of all three
factilities.",
" ",
" -s show semaphore arrays.",
" -m show shared memory segments.",
" -M show shared memory segments with additional details.",
" -q show message queues.",
" id show the data associated with this resource ID.",
" addr show the data associated with this virtual address of a",
" shmid_kernel, sem_array or msq_queue.",
"",
" For kernels supporting namespaces, the -n option may be used to",
" display the IPC facilities with respect to the namespace of a",
" specified task:\n",
" -n pid a process PID.",
" -n task a hexadecimal task_struct pointer.",
- >
+ >
Thanks!!
-
Issue is observed even with old kernel.

- KERNEL: /usr/lib/debug/boot/vmlinux-4.15.0-12-generic
- DUMPFILE: dump.201804090031 [PARTIAL DUMP]
- CPUS: 160
- DATE: Mon Apr 9 00:30:53 2018
- UPTIME: 00:04:24
+       KERNEL: /usr/lib/debug/boot/vmlinux-4.15.0-12-generic
+     DUMPFILE: dump.201804090031 [PARTIAL DUMP]
+         CPUS: 160
+         DATE: Mon Apr 9 00:30:53 2018
+       UPTIME: 00:04:24
LOAD AVERAGE: 2.75, 1.56, 0.64
- TASKS: 1738
- NODENAME: ltc-briggs2
- RELEASE: 4.15.0-12-generic
- VERSION: #13-Ubuntu SMP Wed Mar 7 21:37:03 UTC 2018
- MACHINE: ppc64le (2926 Mhz)
- MEMORY: 512 GB
- PANIC: "sysrq: SysRq : Trigger a crash"
- PID: 6995
- COMMAND: "bash"
- TASK: c000003f70dcfd00 [THREAD_INFO: c000003f70e78000]
- CPU: 64
- STATE: TASK_RUNNING (SYSRQ)
+        TASKS: 1738
+     NODENAME: ltc-briggs2
+      RELEASE: 4.15.0-12-generic
+      VERSION: #13-Ubuntu SMP Wed Mar 7 21:37:03 UTC 2018
+      MACHINE: ppc64le (2926 Mhz)
+       MEMORY: 512 GB
+        PANIC: "sysrq: SysRq : Trigger a crash"
+          PID: 6995
+      COMMAND: "bash"
+         TASK: c000003f70dcfd00 [THREAD_INFO: c000003f70e78000]
+          CPU: 64
+        STATE: TASK_RUNNING (SYSRQ)

crash> ipcs
SHMID_KERNEL KEY SHMID UID PERMS BYTES NATTCH STATUS

ipcs: invalid structure member offset: idr_top
- FILE: ipcs.c LINE: 628 FUNCTION: idr_find()
+       FILE: ipcs.c LINE: 628 FUNCTION: idr_find()

[/usr/bin/crash] error trace: 198c7e38930 => 198c7e382d8 => 198c7dd8e98
=> 198c7ca1488

ipcs: invalid structure member offset: idr_top
- FILE: ipcs.c LINE: 628 FUNCTION: idr_find()
+       FILE: ipcs.c LINE: 628 FUNCTION: idr_find()

crash>

---------------------------------------------------------------------------------------------------------------------------------

-
crash> ipcs
SHMID_KERNEL KEY SHMID UID PERMS BYTES NATTCH STATUS

ipcs: invalid structure member offset: idr_top
- FILE: ipcs.c LINE: 628 FUNCTION: idr_find()
+       FILE: ipcs.c LINE: 628 FUNCTION: idr_find()

[/usr/bin/crash] error trace: 69b16c28930 => 69b16c282d8 => 69b16bc8e98
=> 69b16a91488

ipcs: invalid structure member offset: idr_top
- FILE: ipcs.c LINE: 628 FUNCTION: idr_find()
+       FILE: ipcs.c LINE: 628 FUNCTION: idr_find()

crash> ipcs -s
- SEM_ARRAY KEY SEMID UID PERMS NSEMS
-
- ipcs: invalid structure member offset: idr_top
- FILE: ipcs.c LINE: 628 FUNCTION: idr_find()
+ SEM_ARRAY KEY SEMID UID PERMS NSEMS
+
+ ipcs: invalid structure member offset: idr_top
+       FILE: ipcs.c LINE: 628 FUNCTION: idr_find()

[/usr/bin/crash] error trace: 69b16c2ace0 => 69b16c282d8 => 69b16bc8e98
=> 69b16a91488

ipcs: invalid structure member offset: idr_top
- FILE: ipcs.c LINE: 628 FUNCTION: idr_find()
+       FILE: ipcs.c LINE: 628 FUNCTION: idr_find()

crash> ipcs -m
SHMID_KERNEL KEY SHMID UID PERMS BYTES NATTCH STATUS

ipcs: invalid structure member offset: idr_top
- FILE: ipcs.c LINE: 628 FUNCTION: idr_find()
+       FILE: ipcs.c LINE: 628 FUNCTION: idr_find()

[/usr/bin/crash] error trace: 69b16c28930 => 69b16c282d8 => 69b16bc8e98
=> 69b16a91488

ipcs: invalid structure member offset: idr_top
- FILE: ipcs.c LINE: 628 FUNCTION: idr_find()
+       FILE: ipcs.c LINE: 628 FUNCTION: idr_find()

crash> ipcs -M

ipcs: invalid structure member offset: idr_top
- FILE: ipcs.c LINE: 628 FUNCTION: idr_find()
+       FILE: ipcs.c LINE: 628 FUNCTION: idr_find()

[/usr/bin/crash] error trace: 69b16c28930 => 69b16c282d8 => 69b16bc8e98
=> 69b16a91488

ipcs: invalid structure member offset: idr_top
- FILE: ipcs.c LINE: 628 FUNCTION: idr_find()
+       FILE: ipcs.c LINE: 628 FUNCTION: idr_find()

crash> ipcs -q
- MSG_QUEUE KEY MSQID UID PERMS USED-BYTES MESSAGES
+ MSG_QUEUE KEY MSQID UID PERMS USED-BYTES MESSAGES
(none allocated)
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https://bugs.launchpad.net/bugs/1765660

Title:
Ubuntu 18.04 [ briggs ]: "ipcs" command fails with error "invalid
structure member offset" in crash prompt.

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Launchpad Bug Tracker
2018-05-17 23:03:47 UTC
Permalink
This bug was fixed in the package crash - 7.2.1-1ubuntu1

---------------
crash (7.2.1-1ubuntu1) cosmic; urgency=medium

* Add patch to fix ipcs command (LP: #1765660).

-- Thadeu Lima de Souza Cascardo <***@canonical.com> Mon, 14 May
2018 16:05:51 -0300

** Changed in: crash (Ubuntu Cosmic)
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1765660

Title:
Ubuntu 18.04 [ briggs ]: "ipcs" command fails with error "invalid
structure member offset" in crash prompt.

To manage notifications about this bug go to:
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Tyler Hicks
2018-05-17 19:12:42 UTC
Permalink
** Also affects: crash (Ubuntu Cosmic)
Importance: High
Assignee: Canonical Kernel Team (canonical-kernel-team)
Status: New

** Also affects: crash (Ubuntu Artful)
Importance: Undecided
Status: New

** Also affects: crash (Ubuntu Bionic)
Importance: Undecided
Status: New

** Also affects: crash (Ubuntu Xenial)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1765660

Title:
Ubuntu 18.04 [ briggs ]: "ipcs" command fails with error "invalid
structure member offset" in crash prompt.

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu-power-systems/+bug/1765660/+subscriptions
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