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 734021 - host kernel panic while host running multiple TCP_RR.
Summary: host kernel panic while host running multiple TCP_RR.
Keywords:
Status: CLOSED DUPLICATE of bug 730756
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: kernel
Version: 6.2
Hardware: Unspecified
OS: Unspecified
high
high
Target Milestone: rc
: ---
Assignee: Herbert Xu
QA Contact: Red Hat Kernel QE team
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2011-08-29 08:26 UTC by Quan Wenli
Modified: 2011-09-19 11:49 UTC (History)
1 user (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2011-09-19 11:49:35 UTC
Target Upstream Version:
Embargoed:


Attachments (Terms of Use)
backtrace of kernel panic (4.29 KB, application/octet-stream)
2011-08-29 08:26 UTC, Quan Wenli
no flags Details

Description Quan Wenli 2011-08-29 08:26:31 UTC
Created attachment 520313 [details]
backtrace of kernel panic

Description of problem:

host kernel panic while host running multiple TCP_RR.backtrace in attachment.

Version-Release number of selected component (if applicable):

kernel-2.6.32-191.el6.x86_64
qemu-kvm-0.12.1.2-2.184.el6.x86_64

How reproducible:

always

Steps to Reproduce:
1.boot guest on the host.
/usr/libexec/qemu-kvm /home/kvm_autotest_root/images/RHEL-Server-6.2-64-virtio.qcow2 -netdev tap,id=hn0,vhost=on -device virtio-net-pci,netdev=hn0,mac=00:00:05:00:00:05 -m 4G -cpu cpu64-rhel6,+sse2,+x2apic -rtc base=utc,clock=host -usbdevice tablet -no-kvm-pit-reinjection -M rhel6.2.0 -enable-kvm -vnc :10
2.run netserver on the guest (ip is 192.168.100.3)
3.run multiple TCP_RR on the host (configure netperf with  --enable-burst)
  netperf -H 192.168.100.3 -t TCP_RR -- -b 25 -r 256,25

  
Actual results:

host kernel panic while host running multiple TCP_RR.

Expected results:


Additional info:

# sysctl -a |grep bridge
net.bridge.bridge-nf-call-arptables = 0
net.bridge.bridge-nf-call-iptables = 0
net.bridge.bridge-nf-call-ip6tables = 0
net.bridge.bridge-nf-filter-vlan-tagged = 0
net.bridge.bridge-nf-filter-pppoe-tagged = 0

# ethtool -k eth1
Offload parameters for eth1:
rx-checksumming: on
tx-checksumming: on
scatter-gather: on
tcp-segmentation-offload: on
udp-fragmentation-offload: off
generic-segmentation-offload: on
generic-receive-offload: on
large-receive-offload: off

# ethtool -i eth1
driver: ixgbe
version: 3.4.8-k
firmware-version: 0.9-3
bus-info: 0000:0f:00.1

# cat /proc/cmdline 
ro root=/dev/mapper/VolGroup-LogVol_root rd_LVM_LV=VolGroup/LogVol_root rd_LVM_LV=VolGroup/LogVol_swap rd_NO_LUKS rd_NO_MD rd_NO_DM LANG=en_US.UTF-8 SYSFONT=latarcyrheb-sun16 KEYBOARDTYPE=pc KEYTABLE=us crashkernel=129M@0M processor.max_cstate=1 nmi_watchdog=0 console=tty0 console=ttyS0,115200 rhgb quiet intel_iommu=off

Comment 4 Herbert Xu 2011-09-19 11:49:35 UTC

*** This bug has been marked as a duplicate of bug 730756 ***


Note You need to log in before you can comment on or make changes to this bug.