RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.
Bug 1542045 - qemu-kvm-rhev seg-faults at qemu_co_queue_run_restart (co=co@entry=0x5602801e8080) at util/qemu-coroutine-lock.c:83)
Summary: qemu-kvm-rhev seg-faults at qemu_co_queue_run_restart (co=co@entry=0x5602801...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: qemu-kvm-rhev
Version: 7.4
Hardware: x86_64
OS: Linux
high
high
Target Milestone: rc
: ---
Assignee: Stefan Hajnoczi
QA Contact: Gu Nini
URL:
Whiteboard:
Depends On:
Blocks: 1544333
TreeView+ depends on / blocked
 
Reported: 2018-02-05 12:58 UTC by Nirav Dave
Modified: 2021-06-10 14:27 UTC (History)
14 users (show)

Fixed In Version: QEMU 2.10.0
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
: 1544333 (view as bug list)
Environment:
Last Closed: 2018-04-11 01:01:36 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2018:1104 0 None None None 2018-04-11 01:01:55 UTC

Description Nirav Dave 2018-02-05 12:58:40 UTC 
Description of problem:
The issue is faced on RHEL 7.4, the qemu-kvm is getting crashed with following dump 

Program terminated with signal 11, Segmentation fault.
#0  qemu_co_queue_run_restart (co=co@entry=0x5602801e8080) at util/qemu-coroutine-lock.c:83


Version-Release number of selected component (if applicable):
Red Hat Enterprise Linux Server release 7.4 (Maipo)
qemu-kvm-rhev-2.9.0-16.el7_4.3.x86_64

How reproducible:
There are no specific steps but the scenario seems high I/O load

Steps to Reproduce:
N/A


Actual results:
qemu-kvm-rhev is seg-faulting with followig backtrace:

--------------------------------------
0  qemu_co_queue_run_restart (co=co@entry=0x5602801e8080) at util/qemu-coroutine-lock.c:83
#1  0x000056027a8c570f in qemu_aio_coroutine_enter (ctx=<optimized out>, co=0x5602801e8080) at util/qemu-coroutine.c:127
#2  0x000056027a8c5835 in qemu_coroutine_enter (co=<optimized out>) at util/qemu-coroutine.c:144
#3  0x000056027a8c5955 in qemu_co_queue_run_restart (co=co@entry=0x56027f36d480) at util/qemu-coroutine-lock.c:84
#4  0x000056027a8c570f in qemu_aio_coroutine_enter (ctx=<optimized out>, co=0x56027f36d480) at util/qemu-coroutine.c:127
#5  0x000056027a8c5835 in qemu_coroutine_enter (co=<optimized out>) at util/qemu-coroutine.c:144
#6  0x000056027a8c5974 in qemu_co_queue_run_restart (co=co@entry=0x56027cd281c0) at util/qemu-coroutine-lock.c:84
#7  0x000056027a8c570f in qemu_aio_coroutine_enter (ctx=<optimized out>, co=0x56027cd281c0) at util/qemu-coroutine.c:127
#8  0x000056027a8c5835 in qemu_coroutine_enter (co=<optimized out>) at util/qemu-coroutine.c:144
#9  0x000056027a8c5955 in qemu_co_queue_run_restart (co=co@entry=0x56027d7eaf80) at util/qemu-coroutine-lock.c:84
#10 0x000056027a8c570f in qemu_aio_coroutine_enter (ctx=<optimized out>, co=0x56027d7eaf80) at util/qemu-coroutine.c:127
#11 0x000056027a8c5835 in qemu_coroutine_enter (co=<optimized out>) at util/qemu-coroutine.c:144
#12 0x000056027a8c5955 in qemu_co_queue_run_restart (co=co@entry=0x56027f390080) at util/qemu-coroutine-lock.c:84
#13 0x000056027a8c570f in qemu_aio_coroutine_enter (ctx=<optimized out>, co=0x56027f390080) at util/qemu-coroutine.c:127
#14 0x000056027a8c5835 in qemu_coroutine_enter (co=<optimized out>) at util/qemu-coroutine.c:144
#15 0x000056027a8c5974 in qemu_co_queue_run_restart (co=co@entry=0x56027cd27cc0) at util/qemu-coroutine-lock.c:84
#16 0x000056027a8c570f in qemu_aio_coroutine_enter (ctx=<optimized out>, co=0x56027cd27cc0) at util/qemu-coroutine.c:127
#17 0x000056027a8c5835 in qemu_coroutine_enter (co=<optimized out>) at util/qemu-coroutine.c:144
#18 0x000056027a8c5974 in qemu_co_queue_run_restart (co=co@entry=0x5602801e9840) at util/qemu-coroutine-lock.c:84
#19 0x000056027a8c570f in qemu_aio_coroutine_enter (ctx=<optimized out>, co=0x5602801e9840) at util/qemu-coroutine.c:127
#20 0x000056027a8c5835 in qemu_coroutine_enter (co=<optimized out>) at util/qemu-coroutine.c:144
#21 0x000056027a8c5974 in qemu_co_queue_run_restart (co=co@entry=0x56027e9d0800) at util/qemu-coroutine-lock.c:84
#22 0x000056027a8c570f in qemu_aio_coroutine_enter (ctx=<optimized out>, co=0x56027e9d0800) at util/qemu-coroutine.c:127
#23 0x000056027a8c5835 in qemu_coroutine_enter (co=<optimized out>) at util/qemu-coroutine.c:144
#24 0x000056027a8c5974 in qemu_co_queue_run_restart (co=co@entry=0x56027d7eb700) at util/qemu-coroutine-lock.c:84
#25 0x000056027a8c570f in qemu_aio_coroutine_enter (ctx=<optimized out>, co=0x56027d7eb700) at util/qemu-coroutine.c:127
#26 0x000056027a8c5835 in qemu_coroutine_enter (co=<optimized out>) at util/qemu-coroutine.c:144
#27 0x000056027a8c5974 in qemu_co_queue_run_restart (co=co@entry=0x56027e9cdc00) at util/qemu-coroutine-lock.c:84
#28 0x000056027a8c570f in qemu_aio_coroutine_enter (ctx=<optimized out>, co=0x56027e9cdc00) at util/qemu-coroutine.c:127
#29 0x000056027a8c5835 in qemu_coroutine_enter (co=<optimized out>) at util/qemu-coroutine.c:144
#30 0x000056027a8c5974 in qemu_co_queue_run_restart (co=co@entry=0x56027fbc6bc0) at util/qemu-coroutine-lock.c:84
#31 0x000056027a8c570f in qemu_aio_coroutine_enter (ctx=<optimized out>, co=0x56027fbc6bc0) at util/qemu-coroutine.c:127
#32 0x000056027a8c5835 in qemu_coroutine_enter (co=<optimized out>) at util/qemu-coroutine.c:144
#33 0x000056027a8c5974 in qemu_co_queue_run_restart (co=co@entry=0x5602809bd7c0) at util/qemu-coroutine-lock.c:84
#34 0x000056027a8c570f in qemu_aio_coroutine_enter (ctx=<optimized out>, co=0x5602809bd7c0) at util/qemu-coroutine.c:127
#35 0x000056027a8c5835 in qemu_coroutine_enter (co=<optimized out>) at util/qemu-coroutine.c:144
#36 0x000056027a8c5974 in qemu_co_queue_run_restart (co=co@entry=0x5602809bca00) at util/qemu-coroutine-lock.c:84
#37 0x000056027a8c570f in qemu_aio_coroutine_enter (ctx=<optimized out>, co=0x5602809bca00) at util/qemu-coroutine.c:127
#38 0x000056027a8c5835 in qemu_coroutine_enter (co=<optimized out>) at util/qemu-coroutine.c:144
#39 0x000056027a8c5955 in qemu_co_queue_run_restart (co=co@entry=0x5602801e8800) at util/qemu-coroutine-lock.c:84
#40 0x000056027a8c570f in qemu_aio_coroutine_enter (ctx=<optimized out>, co=0x5602801e8800) at util/qemu-coroutine.c:127
#41 0x000056027a8c5835 in qemu_coroutine_enter (co=<optimized out>) at util/qemu-coroutine.c:144
#42 0x000056027a8c5974 in qemu_co_queue_run_restart (co=co@entry=0x5602801e8f80) at util/qemu-coroutine-lock.c:84
#43 0x000056027a8c570f in qemu_aio_coroutine_enter (ctx=<optimized out>, co=0x5602801e8f80) at util/qemu-coroutine.c:127
#44 0x000056027a8c5835 in qemu_coroutine_enter (co=<optimized out>) at util/qemu-coroutine.c:144
#45 0x000056027a8c5974 in qemu_co_queue_run_restart (co=co@entry=0x56027f36bf40) at util/qemu-coroutine-lock.c:84
#46 0x000056027a8c570f in qemu_aio_coroutine_enter (ctx=<optimized out>, co=0x56027f36bf40) at util/qemu-coroutine.c:127
#47 0x000056027a8c5835 in qemu_coroutine_enter (co=<optimized out>) at util/qemu-coroutine.c:144
#48 0x000056027a8c5974 in qemu_co_queue_run_restart (co=co@entry=0x56027cd29200) at util/qemu-coroutine-lock.c:84
#49 0x000056027a8c570f in qemu_aio_coroutine_enter (ctx=<optimized out>, co=0x56027cd29200) at util/qemu-coroutine.c:127
#50 0x000056027a8c5835 in qemu_coroutine_enter (co=<optimized out>) at util/qemu-coroutine.c:144
#51 0x000056027a8c5974 in qemu_co_queue_run_restart (co=co@entry=0x56027cd28bc0) at util/qemu-coroutine-lock.c:84
#52 0x000056027a8c570f in qemu_aio_coroutine_enter (ctx=<optimized out>, co=0x56027cd28bc0) at util/qemu-coroutine.c:127
#53 0x000056027a8c5835 in qemu_coroutine_enter (co=<optimized out>) at util/qemu-coroutine.c:144
#54 0x000056027a8c5974 in qemu_co_queue_run_restart (co=co@entry=0x56027f38f040) at util/qemu-coroutine-lock.c:84
#55 0x000056027a8c570f in qemu_aio_coroutine_enter (ctx=ctx@entry=0x56027c8d9700, co=co@entry=0x56027f38f040) at util/qemu-coroutine.c:127
#56 0x000056027a8b0d78 in aio_co_enter (ctx=<optimized out>, co=0x56027f38f040) at util/async.c:472
#57 0x000056027a8b0dbc in aio_co_wake (co=<optimized out>) at util/async.c:456
#58 0x000056027a83b8cd in qemu_laio_process_completion (laiocb=<optimized out>) at block/linux-aio.c:103
#59 0x000056027a83b95c in qemu_laio_process_completions (s=s@entry=0x56027c8a39f0) at block/linux-aio.c:221
#60 0x000056027a83bbb9 in qemu_laio_process_completions_and_submit (s=0x56027c8a39f0) at block/linux-aio.c:236
#61 0x000056027a8b2c68 in aio_dispatch_handlers (ctx=ctx@entry=0x56027c8d9700) at util/aio-posix.c:399
---------------------------------------------------------------------


Expected results:
The qemu-kvm-rhev should not seg-fault. 


Additional info:
I have found fix on qemu-devel, which seems to be fixed in 2.10 qemu-kvm-rhev version which is by default available on RHEL 7.5

https://lists.gnu.org/archive/html/qemu-devel/2017-05/msg06570.html.

Can we backport the fix or we need to upgrade it to 7.5, customer right now is on 7.4.

I will be  attaching coredump for further analysis shortly.

Thanks & Regards,
Nirav Dave
Comment 18 errata-xmlrpc 2018-04-11 01:01:36 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2018:1104
Note You need to log in before you can comment on or make changes to this bug.