[Bug 42829] KVM Guest with virtio network driver loses network connectivity
https://bugzilla.kernel.org/show_bug.cgi?id=42829 Chun-Hung Chen arn...@gmail.com changed: What|Removed |Added CC||arn...@gmail.com --- Comment #19 from Chun-Hung Chen arn...@gmail.com 2012-03-15 08:22:26 --- Hi, I have tested under Ubuntu 11.10 Server with Kernel 3.0.0-12 only with vhost on and it works well so far. -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are watching the assignee of the bug. -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[Bug 42829] KVM Guest with virtio network driver loses network connectivity
https://bugzilla.kernel.org/show_bug.cgi?id=42829 --- Comment #17 from Kurk k...@shiftmail.org 2012-03-12 17:15:16 --- Steve, thank you for finding this bug. Is there a chance you could test without vhost but with the event_idx=off ? This is the xml line in case you use libvirt: interface ... driver name=qemu event_idx=off/ /interface That would be an effective workaround until we get a fixed qemu. Thanks for your time. -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are watching the assignee of the bug. -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[Bug 42829] KVM Guest with virtio network driver loses network connectivity
https://bugzilla.kernel.org/show_bug.cgi?id=42829 --- Comment #18 from Jason Wang jasow...@redhat.com 2012-03-13 03:23:30 --- Hi all: I suspect the issue were fixed by this commit: http://git.kernel.org/?p=linux/kernel/git/davem/net-next.git;a=commitdiff;h=4b727361f0bc7ee7378298941066d8aa15023ffb;hp=e1ac50f64691de9a095ac5d73cb8ac73d3d17dba -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are watching the assignee of the bug. -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[Bug 42829] KVM Guest with virtio network driver loses network connectivity
https://bugzilla.kernel.org/show_bug.cgi?id=42829
Steve stefan.bo...@gmail.com changed:
What|Removed |Added
Status|REOPENED|RESOLVED
Resolution||CODE_FIX
--- Comment #16 from Steve stefan.bo...@gmail.com 2012-03-07 12:40:15 ---
Thank you for information.
Today I test v3.3-rc6+ from today morning: the same version on host and guest
also latest seabios, qemu-kvm, net-tools, util-linux, kmod, udev.
Now it works correctly after few hours under huge network traffic load
both directions in paralell without any network issue.
Bellow are my arguments for tested guest running on testing host:
-
${VPS}
-nodefaults
-name ${VPS_NAME}
-chroot ${VPS_CHROOT}
-runas ${VPS_USER}
-pidfile ${VPS_PIDFILE}
-vnc ${VPS_WAN}:0
-vga std --full-screen
-smp ${VPS_CPU} -m ${VPS_MEM} -cpu host
-mem-path /hugepages -mem-prealloc
-enable-kvm -daemonize -rtc base=localtime,clock=host,driftfix=none
-balloon ${VPS_BALLOON}
-netdev tap,id=nic01,ifname=${VPS_NET_IF_NAME},
script=/etc/kvm/kvm-ifup,downscript=/etc/kvm/kvm/ifdown,
vnet_hdr=on,vhost=on,vhostforce=off
-device virtio-net-pci,netdev=nic01,mac=${VPS_MAC}
-drive aio=native,index=0,media=disk,cache=none,
if=${VPS_DRIVE_IF_TYPE},file=${VPS_IMG}
-boot order=c,menu=off
lsmod on guest (lsmod | grep virtio):
virtio_net 12477 0
virtio_balloon 4216 0
virtio_blk 6313 3
virtio_pci 6983 0
virtio 3282 4 virtio_pci,virtio_blk,virtio_balloon,virtio_net
virtio_ring 4154 4 virtio_pci,virtio_blk,virtio_balloon,virtio_net
lspci on guest (lspci):
00:00.0 Host bridge: Intel Corporation 440FX - 82441FX PMC [Natoma] (rev 02)
00:01.0 ISA bridge: Intel Corporation 82371SB PIIX3 ISA [Natoma/Triton II]
00:01.1 IDE interface: Intel Corporation 82371SB PIIX3 IDE [Natoma/Triton II]
00:01.3 Bridge: Intel Corporation 82371AB/EB/MB PIIX4 ACPI (rev 03)
00:02.0 VGA compatible controller: Device 1234:
00:03.0 RAM memory: Red Hat, Inc Virtio memory balloon
00:04.0 Ethernet controller: Red Hat, Inc Virtio network device
00:05.0 SCSI storage controller: Red Hat, Inc Virtio block device
I try to test older guest kernels with above setup.
Thank you for your time cooperation.
Have a nice day.
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[Bug 42829] KVM Guest with virtio network driver loses network connectivity
https://bugzilla.kernel.org/show_bug.cgi?id=42829 --- Comment #14 from Steve stefan.bo...@gmail.com 2012-03-06 19:35:14 --- Please could someone have a look on this issue ? Thank you for your time. -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are watching the assignee of the bug. -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[Bug 42829] KVM Guest with virtio network driver loses network connectivity
https://bugzilla.kernel.org/show_bug.cgi?id=42829 --- Comment #15 from Jason Wang jasow...@redhat.com 2012-03-07 05:41:09 --- (In reply to comment #14) Please could someone have a look on this issue ? Thank you for your time. Hello Steve: According to you bisect result, maybe the issue of the event index in qemu. Looks like you didn't use vhost according to your qemu-kvm cli, could you please try to see whether the 3.3-rc6 guest works under vhost backend (-netdev tap,vhost=on,id=XXX -device virtio-net-pci,netdev=XXX ... ). And if it works, could you please then try 3.3-rc6 guest without vhost and disable event index feature by -device virtio-net-pci,event_idx=off ? thanks -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are watching the assignee of the bug. -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[Bug 42829] KVM Guest with virtio network driver loses network connectivity
https://bugzilla.kernel.org/show_bug.cgi?id=42829 Steve stefan.bo...@gmail.com changed: What|Removed |Added Kernel Version|v3.0-rc5|v3.0-rc1 -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are watching the assignee of the bug. -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[Bug 42829] KVM Guest with virtio network driver loses network connectivity
https://bugzilla.kernel.org/show_bug.cgi?id=42829 Steve stefan.bo...@gmail.com changed: What|Removed |Added Kernel Version|v3.0-rc1|v3.0-rc1+ Severity|high|blocking --- Comment #11 from Steve stefan.bo...@gmail.com 2012-03-06 02:26:16 --- I found bad commit. git bisect log: --- git bisect start # bad: [550cf00dbc8ee402bef71628cb71246493dd4500] Merge tag 'mmc-fixes-for-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc git bisect bad 550cf00dbc8ee402bef71628cb71246493dd4500 # good: [61c4f2c81c61f73549928dfd9f3e8f26aa36a8cf] Linux 2.6.39 git bisect good 61c4f2c81c61f73549928dfd9f3e8f26aa36a8cf # bad: [8a9ea3237e7eb5c25f09e429ad242ae5a3d5ea22] Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next git bisect bad 8a9ea3237e7eb5c25f09e429ad242ae5a3d5ea22 # bad: [95a943c162d74b20d869917bdf5df11293c35b63] Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem git bisect bad 95a943c162d74b20d869917bdf5df11293c35b63 # good: [98b98d316349e9a028e632629fe813d07fa5afdd] Merge branch 'drm-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 git bisect good 98b98d316349e9a028e632629fe813d07fa5afdd # bad: [1f6e44a6dc21a5d2abb068063acbbf64f8cee548] pxa168_eth: enable transmit time stamping. git bisect bad 1f6e44a6dc21a5d2abb068063acbbf64f8cee548 # good: [19de85ef574c3a2182e3ccad9581805052f14946] bitops: add #ifndef for each of find bitops git bisect good 19de85ef574c3a2182e3ccad9581805052f14946 # good: [c320afe965bf3f857249d223801d8f2fc95615c2] Blackfin: debug-mmrs: include RSI_PID[4567] MMRs git bisect good c320afe965bf3f857249d223801d8f2fc95615c2 # bad: [23c79d31a3dd2602ee1a5ff31303b2d7a2d3c159] Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6 git bisect bad 23c79d31a3dd2602ee1a5ff31303b2d7a2d3c159 # good: [cd1acdf1723d71b28175f95b04305f1cc74ce363] Merge branch 'pnfs-submit' of git://git.open-osd.org/linux-open-osd git bisect good cd1acdf1723d71b28175f95b04305f1cc74ce363 # bad: [cd4ecf877a4d629c38571405fd649077c12dec50] Merge branch 'rmobile-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 git bisect bad cd4ecf877a4d629c38571405fd649077c12dec50 # bad: [5c6cce92bc8aee751aafe82c5d9caf7553226a3d] Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6 git bisect bad 5c6cce92bc8aee751aafe82c5d9caf7553226a3d # bad: [8ea8cf89e19aeb596b818ee5f2bec8a8b0586b60] vhost: support event index git bisect bad 8ea8cf89e19aeb596b818ee5f2bec8a8b0586b60 # good: [bc805a03c26e1e25171bc627c6264553d27f746c] lguest: fix up compilation after move git bisect good bc805a03c26e1e25171bc627c6264553d27f746c # good: [bf50e69f63d21091e525185c3ae761412be0ba72] virtio balloon: kill tell-host-first logic git bisect good bf50e69f63d21091e525185c3ae761412be0ba72 # good: [770b31a85e000b0194974922f238a30ade4246b6] virtio: event index interface git bisect good 770b31a85e000b0194974922f238a30ade4246b6 # bad: [a5c262c5fd83ece01bd649fb08416c501d4c59d7] virtio_ring: support event idx feature git bisect bad a5c262c5fd83ece01bd649fb08416c501d4c59d7 # good: [bf7035bf20563a6cadcb9e870406e7b21daf5e30] virtio ring: inline function to check for events git bisect good bf7035bf20563a6cadcb9e870406e7b21daf5e30 git bisect message: === a5c262c5fd83ece01bd649fb08416c501d4c59d7 is the first bad commit commit a5c262c5fd83ece01bd649fb08416c501d4c59d7 Author: Michael S. Tsirkin m...@redhat.com Date: Fri May 20 02:10:44 2011 +0300 virtio_ring: support event idx feature Support for the new event idx feature: 1. When enabling interrupts, publish the current avail index value to the host to get interrupts on the next update. 2. Use the new avail_event feature to reduce the number of exits from the guest. Simple test with the simulator: [virtio]# time ./virtio_test spurious wakeus: 0x7 real0m0.169s user0m0.140s sys 0m0.019s [virtio]# time ./virtio_test --no-event-idx spurious wakeus: 0x11 real0m0.649s user0m0.295s sys 0m0.335s Signed-off-by: Michael S. Tsirkin m...@redhat.com Signed-off-by: Rusty Russell ru...@rustcorp.com.au :04 04 933903414419858cf7402aa3fb8c3f675d6ab7cc 0ed603da4671eef88e0702e6438e903b56688b62 M drivers I found bug in include/linux/virtio_ring.h: === virtio: event index interface authorMichael S. Tsirkin m...@redhat.com Thu, 19 May 2011 23:10:17 + (02:10 +0300) committerRusty Russell ru...@rustcorp.com.au Mon, 30 May 2011 01:44:14 + (10:44 +0930) commit770b31a85e000b0194974922f238a30ade4246b6 treeeed81e23f3116858b49af76bcc5831c38662de96tree |
[Bug 42829] KVM Guest with virtio network driver loses network connectivity
https://bugzilla.kernel.org/show_bug.cgi?id=42829 Jason Wang jasow...@redhat.com changed: What|Removed |Added CC||jasow...@redhat.com --- Comment #12 from Jason Wang jasow...@redhat.com 2012-03-06 02:56:08 --- (In reply to comment #11) I found bad commit. git bisect log: --- git bisect start # bad: [550cf00dbc8ee402bef71628cb71246493dd4500] Merge tag 'mmc-fixes-for-3.3' of git://git.kernel.org/pub/scm/linux/kernel/git/cjb/mmc git bisect bad 550cf00dbc8ee402bef71628cb71246493dd4500 # good: [61c4f2c81c61f73549928dfd9f3e8f26aa36a8cf] Linux 2.6.39 git bisect good 61c4f2c81c61f73549928dfd9f3e8f26aa36a8cf # bad: [8a9ea3237e7eb5c25f09e429ad242ae5a3d5ea22] Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next git bisect bad 8a9ea3237e7eb5c25f09e429ad242ae5a3d5ea22 # bad: [95a943c162d74b20d869917bdf5df11293c35b63] Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-next-2.6 into for-davem git bisect bad 95a943c162d74b20d869917bdf5df11293c35b63 # good: [98b98d316349e9a028e632629fe813d07fa5afdd] Merge branch 'drm-core-next' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 git bisect good 98b98d316349e9a028e632629fe813d07fa5afdd # bad: [1f6e44a6dc21a5d2abb068063acbbf64f8cee548] pxa168_eth: enable transmit time stamping. git bisect bad 1f6e44a6dc21a5d2abb068063acbbf64f8cee548 # good: [19de85ef574c3a2182e3ccad9581805052f14946] bitops: add #ifndef for each of find bitops git bisect good 19de85ef574c3a2182e3ccad9581805052f14946 # good: [c320afe965bf3f857249d223801d8f2fc95615c2] Blackfin: debug-mmrs: include RSI_PID[4567] MMRs git bisect good c320afe965bf3f857249d223801d8f2fc95615c2 # bad: [23c79d31a3dd2602ee1a5ff31303b2d7a2d3c159] Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6 git bisect bad 23c79d31a3dd2602ee1a5ff31303b2d7a2d3c159 # good: [cd1acdf1723d71b28175f95b04305f1cc74ce363] Merge branch 'pnfs-submit' of git://git.open-osd.org/linux-open-osd git bisect good cd1acdf1723d71b28175f95b04305f1cc74ce363 # bad: [cd4ecf877a4d629c38571405fd649077c12dec50] Merge branch 'rmobile-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 git bisect bad cd4ecf877a4d629c38571405fd649077c12dec50 # bad: [5c6cce92bc8aee751aafe82c5d9caf7553226a3d] Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/security-testing-2.6 git bisect bad 5c6cce92bc8aee751aafe82c5d9caf7553226a3d # bad: [8ea8cf89e19aeb596b818ee5f2bec8a8b0586b60] vhost: support event index git bisect bad 8ea8cf89e19aeb596b818ee5f2bec8a8b0586b60 # good: [bc805a03c26e1e25171bc627c6264553d27f746c] lguest: fix up compilation after move git bisect good bc805a03c26e1e25171bc627c6264553d27f746c # good: [bf50e69f63d21091e525185c3ae761412be0ba72] virtio balloon: kill tell-host-first logic git bisect good bf50e69f63d21091e525185c3ae761412be0ba72 # good: [770b31a85e000b0194974922f238a30ade4246b6] virtio: event index interface git bisect good 770b31a85e000b0194974922f238a30ade4246b6 # bad: [a5c262c5fd83ece01bd649fb08416c501d4c59d7] virtio_ring: support event idx feature git bisect bad a5c262c5fd83ece01bd649fb08416c501d4c59d7 # good: [bf7035bf20563a6cadcb9e870406e7b21daf5e30] virtio ring: inline function to check for events git bisect good bf7035bf20563a6cadcb9e870406e7b21daf5e30 git bisect message: === a5c262c5fd83ece01bd649fb08416c501d4c59d7 is the first bad commit commit a5c262c5fd83ece01bd649fb08416c501d4c59d7 Author: Michael S. Tsirkin m...@redhat.com Date: Fri May 20 02:10:44 2011 +0300 virtio_ring: support event idx feature Support for the new event idx feature: 1. When enabling interrupts, publish the current avail index value to the host to get interrupts on the next update. 2. Use the new avail_event feature to reduce the number of exits from the guest. Simple test with the simulator: [virtio]# time ./virtio_test spurious wakeus: 0x7 real0m0.169s user0m0.140s sys 0m0.019s [virtio]# time ./virtio_test --no-event-idx spurious wakeus: 0x11 real0m0.649s user0m0.295s sys 0m0.335s Signed-off-by: Michael S. Tsirkin m...@redhat.com Signed-off-by: Rusty Russell ru...@rustcorp.com.au :04 04 933903414419858cf7402aa3fb8c3f675d6ab7cc 0ed603da4671eef88e0702e6438e903b56688b62 M drivers I found bug in include/linux/virtio_ring.h: === virtio: event index interface authorMichael S. Tsirkin m...@redhat.com Thu, 19 May 2011 23:10:17 + (02:10 +0300) committerRusty Russell ru...@rustcorp.com.au Mon, 30 May 2011 01:44:14 + (10:44 +0930) commit
[Bug 42829] KVM Guest with virtio network driver loses network connectivity
https://bugzilla.kernel.org/show_bug.cgi?id=42829 --- Comment #13 from Steve stefan.bo...@gmail.com 2012-03-06 07:28:59 --- Hello. I start testing from latest master branch v3.3-rc6+ on both: host, guest. During all test host has the same kernel other stuff, on guest i changed only kernel versions by git bisecting. I don't change any code, my proposal is only tip and could be wrong. I suppose that I provided sufficient information to detect bug in code. Answer to your question about containing the fixes: --- git branch --contains=a72caae21803b74e04e2afda5e035f149d4ea118 * master git branch --contains=4dbc5d9f4f791df8a5879f4a655f517adc7f56d1 * master Let me know how could I help you (when needed) to fix this issue as soon as possible. Thank you for your time. -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are watching the assignee of the bug. -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[Bug 42829] KVM Guest with virtio network driver loses network connectivity
https://bugzilla.kernel.org/show_bug.cgi?id=42829 Steve stefan.bo...@gmail.com changed: What|Removed |Added Status|RESOLVED|REOPENED Resolution|CODE_FIX| --- Comment #10 from Steve stefan.bo...@gmail.com 2012-03-04 21:20:01 --- Results of longer tests: Above problem occurs after longer time, more than 10 minutes. I try to locate problem with new git bisecting. Thank you for your time. -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are watching the assignee of the bug. -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[Bug 42829] KVM Guest with virtio network driver loses network connectivity
https://bugzilla.kernel.org/show_bug.cgi?id=42829 Steve stefan.bo...@gmail.com changed: What|Removed |Added Status|NEW |RESOLVED Resolution||CODE_FIX --- Comment #9 from Steve stefan.bo...@gmail.com 2012-03-03 22:12:09 --- Thank you for information. Now it works fine with last kernel 3.3-rc5+ on guest machine. It seems to be: leak in virtio balloon: Probably it was bug in old commit: author: Amit Shah amit.s...@redhat.com commiter: Rusty Russell ru...@rustcorp.com.au e562966dbaf49e7804097cd991e5d3a8934fc148 and fixed by this commit: author: Amit Shah amit.s...@redhat.com commiter: Rusty Russell ru...@rustcorp.com.au 4eb05d562ea1ea34ff607aa877aefbf05b21c140 Please apply above fix commit to all older kernel versions. Thank you for your time. -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are watching the assignee of the bug. -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[Bug 42829] KVM Guest with virtio network driver loses network connectivity
https://bugzilla.kernel.org/show_bug.cgi?id=42829 --- Comment #7 from Kurk k...@shiftmail.org 2012-03-02 11:14:10 --- Git bisect result is not network related? Highly unlikely! The bug reproducer technique you are using might not be reliable (sorry if that was the one I suggested). Try to make longer tests...? I suggest you retest the bisect points which you marked good, some of them might instead be bad. Thanks for your time in finding this bug: this is a very important bug! -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are watching the assignee of the bug. -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[Bug 42829] KVM Guest with virtio network driver loses network connectivity
https://bugzilla.kernel.org/show_bug.cgi?id=42829 --- Comment #8 from Kurk k...@shiftmail.org 2012-03-02 11:36:43 --- Thinking again, this could also be a problem of qemu vs qemu-kvm merges in git. Have a look at these: http://permalink.gmane.org/gmane.comp.emulators.kvm.devel/82851 http://lists.gnu.org/archive/html/qemu-devel/2012-02/msg04047.html and all subsequent posts in this thread Git-bisecting in qemu and kvm is becoming really not straightforward now that they merge from one another, you find a lot of interleaved good and bad commits. Git bisect is for bisecting a situation in which all commits before something are good, and all commits after something are bad. It doesn't seem to be the case anymore with qemu and qemu-kvm. -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are watching the assignee of the bug. -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[Bug 42829] KVM Guest with virtio network driver loses network connectivity
https://bugzilla.kernel.org/show_bug.cgi?id=42829 Steve stefan.bo...@gmail.com changed: What|Removed |Added Kernel Version|3.2 |3.2-rc3 --- Comment #2 from Steve stefan.bo...@gmail.com 2012-03-01 10:46:09 --- Rusty, could you have a look at, please ? Thank you for your time. -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are watching the assignee of the bug. -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[Bug 42829] KVM Guest with virtio network driver loses network connectivity
https://bugzilla.kernel.org/show_bug.cgi?id=42829 Kurk k...@shiftmail.org changed: What|Removed |Added CC||k...@shiftmail.org --- Comment #3 from Kurk k...@shiftmail.org 2012-03-01 14:16:36 --- Hello, I am pretty sure I read about a very similar bug report recently, dunno if that was on kvm or qemu mailing list, or in a bugzilla entry like this. The guy said that there was a reproducer: running a network test between two affected virtual machines. Maybe that was netperf, not sure. Would reproduce the bug in a short time. He said kernel 3.0 (GUEST!) was the first he tested to have this problem, while much older guest kernels did not have this problem. I suggest Steve tries this reproducer, and tell if it works in his case. If that works, debugging would be much faster. -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are watching the assignee of the bug. -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[Bug 42829] KVM Guest with virtio network driver loses network connectivity
https://bugzilla.kernel.org/show_bug.cgi?id=42829 --- Comment #4 from Steve stefan.bo...@gmail.com 2012-03-01 15:22:53 --- Thank you for information. On host I used last updated: kernel from: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git qemu-kvm from: git://git.kernel.org/pub/scm/virt/kvm/qemu-kvm.git seabios from: git://git.seabios.org/seabios.git used compiler, libs other stuff: gcc-4.7.0 (feb 2012) glibc-2.14.1-r2 bridge-utils-1.5 iproute2-3.1.0 ethtool-3.2 On guest I can proceed this: 1) test case one - kernel before v3.0 = v2.6.39 - generate huge traffic betweeen host and guest - make short analyse - create report append to this ticket 2) test case two - kernel =v3.0 - generate huge traffic betweeen host and guest - make short analyse - create report append to this ticket 3) test case three - last kernel =v3.3-rc5+ - generate huge traffic betweeen host and guest - make short analyse - create report append to this ticket In all test cases host system will be the same (kernel and other stuff). Described test cases will be proceed today 01/march/2012 during evening hours. I would like to help solve above problem ASAP. Let me know how could I help in any time. Thank you for your time. -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are watching the assignee of the bug. -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[Bug 42829] KVM Guest with virtio network driver loses network connectivity
https://bugzilla.kernel.org/show_bug.cgi?id=42829 --- Comment #5 from Steve stefan.bo...@gmail.com 2012-03-01 23:04:37 --- Results of my test: === In all test cases host configuration is the same: - kernel: latest 3.3-rc5+ compiler: gcc (4.7.0-pre 20120225 rev. 184573) glibc-2.14.1-r2 bridge-utils-1.5 iproute2-3.1.0 ethtool-3.2 other system stuff: all latest from their git repos util-linux, net-tools, kmod, udev, seabios, qemu-kvm In all test cases guest configuration except kernel is the same: compiler: gcc 4.6.2 glibc-2.14.1-r2 iproute2-3.1.0 ethtool-3.2 other system stuff: all latest from their git repos util-linux, net-tools, kmod, udev 1) guest kernel =v2.6.39 - works fine more than 5min 2) guest kernel =v3.0 - virtio network goes down in less then 1min of test 3) guest kernel latest v3.3-rc5+ - virtio network goes down in less then 1min of test I continue with tracking in kernel tags after v2.6.39: 4) guest kernel =v3.0-rc1 - works fine more than 5min 5) guest kernel =v3.0-rc5 - virtio network goes down in less then 1min of test 6) guest kernel =v3.0-rc3 - works fine more than 5min I shortly look at =v3.0-rc5, problem could be somewhere in this tag. Later I would like to locate problematic commit with git bisecting and after I report my results. -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are watching the assignee of the bug. -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[Bug 42829] KVM Guest with virtio network driver loses network connectivity
https://bugzilla.kernel.org/show_bug.cgi?id=42829 Steve stefan.bo...@gmail.com changed: What|Removed |Added Kernel Version|3.2-rc3 |v3.0-rc5 -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are watching the assignee of the bug. -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[Bug 42829] KVM Guest with virtio network driver loses network connectivity
https://bugzilla.kernel.org/show_bug.cgi?id=42829 --- Comment #6 from Steve stefan.bo...@gmail.com 2012-03-02 01:05:35 --- My results: === git bisect log: --- git bisect start # good: [2c53b436a30867eb6b47dd7bab23ba638d1fb0d2] Linux 3.0-rc3 git bisect good 2c53b436a30867eb6b47dd7bab23ba638d1fb0d2 # bad: [b0af8dfdd67699e25083478c63eedef2e72ebd85] Linux 3.0-rc5 git bisect bad b0af8dfdd67699e25083478c63eedef2e72ebd85 # bad: [c01ad4081939f91ebd7277e8e731fd90ceb3e632] Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input git bisect bad c01ad4081939f91ebd7277e8e731fd90ceb3e632 # bad: [f4ef084226f82ca923bf0a2658bb2876bd215ec1] Merge branch 'fbdev-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/fbdev-3.x git bisect bad f4ef084226f82ca923bf0a2658bb2876bd215ec1 # bad: [bd5dc17be87b3a3073d50b23802647db3ae3fa8e] uts: make default hostname configurable, rather than always using (none) git bisect bad bd5dc17be87b3a3073d50b23802647db3ae3fa8e # bad: [f39e8409955fad210a9a7169cc53c4c18daaef3a] Merge branch 'drm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 git bisect bad f39e8409955fad210a9a7169cc53c4c18daaef3a # bad: [81eb3dd8438802138ac9ce12428632f35562c060] Merge branch 'for-linus' of git://neil.brown.name/md git bisect bad 81eb3dd8438802138ac9ce12428632f35562c060 # good: [9864c0053d3da4c5731ac8a6c4835179310bd40a] md: Using poll /proc/mdstat can monitor the events of adding a spare disks git bisect good 9864c0053d3da4c5731ac8a6c4835179310bd40a # bad: [9b2dc8b665932a8e681a7ab3237f60475e75e161] md/raid5: fix raid5_set_bi_hw_segments git bisect bad 9b2dc8b665932a8e681a7ab3237f60475e75e161 # bad: [27d5ea04d08bea37bf651090e5f3c573d2390df8] md/bitmap: use proper accessor macro git bisect bad 27d5ea04d08bea37bf651090e5f3c573d2390df8 # bad: [01393f3d5836b7d62e925e6f4658a7eb22b83a11] md: check -hot_remove_disk when removing disk git bisect bad 01393f3d5836b7d62e925e6f4658a7eb22b83a11 git bisect message: --- 01393f3d5836b7d62e925e6f4658a7eb22b83a11 is the first bad commit commit 01393f3d5836b7d62e925e6f4658a7eb22b83a11 Author: Namhyung Kim namhy...@gmail.com Date: Thu Jun 9 11:42:54 2011 +1000 md: check -hot_remove_disk when removing disk Check pers-hot_remove_disk instead of pers-hot_add_disk in slot_store() during disk removal. The linear personality only has -hot_add_disk and no -hot_remove_disk, so that removing disk in the array resulted to following kernel bug: $ sudo mdadm --create /dev/md0 --level=linear --raid-devices=4 /dev/loop[0-3] $ echo none | sudo tee /sys/block/md0/md/dev-loop2/slot BUG: unable to handle kernel NULL pointer dereference at (null) IP: [ (null)] (null) PGD c9f5d067 PUD 8575a067 PMD 0 Oops: 0010 [#1] SMP CPU 2 Modules linked in: linear loop bridge stp llc kvm_intel kvm asus_atk0110 sr_mod cdrom sg Pid: 10450, comm: tee Not tainted 3.0.0-rc1-leonard+ #173 System manufacturer System Product Name/P5G41TD-M PRO RIP: 0010:[] [ (null)] (null) RSP: 0018:880085757df0 EFLAGS: 00010282 RAX: a00168e0 RBX: 8800d1431800 RCX: 006e RDX: 0001 RSI: 0002 RDI: 88008543c000 RBP: 880085757e48 R08: 0002 R09: 000a R10: R11: 88008543c2e0 R12: R13: 8800b4641000 R14: 0005 R15: FS: 7fe8c9e05700() GS:88011fa0() knlGS: CS: 0010 DS: ES: CR0: 8005003b CR2: CR3: b4502000 CR4: 000406e0 DR0: DR1: DR2: DR3: DR6: 0ff0 DR7: 0400 Process tee (pid: 10450, threadinfo 880085756000, task 8800c9f08000) Stack: 8138496a 8800b4641000 88008543c268 8800b4641000 88008543c000 8800d1431868 81a78a90 8800b4641000 88008543c000 8800d1431800 880085757e98 Call Trace: [8138496a] ? slot_store+0xaa/0x265 [81384bae] rdev_attr_store+0x89/0xa8 [8115a96a] sysfs_write_file+0x108/0x144 [81106b87] vfs_write+0xb1/0x10d [8106e6c0] ? trace_hardirqs_on_caller+0x111/0x135 [81106cac] sys_write+0x4d/0x77 [814fe702] system_call_fastpath+0x16/0x1b Code: Bad RIP value. RIP [ (null)] (null) RSP 880085757df0 CR2: ---[ end trace ba5fc64319a826fb ]--- Signed-off-by: Namhyung Kim namhy...@gmail.com Cc: sta...@kernel.org Signed-off-by: NeilBrown ne...@suse.de :04 04 e3d19f53113f5bb5faef422958607e4f0131d235
[Bug 42829] KVM Guest with virtio network driver loses network connectivity
https://bugzilla.kernel.org/show_bug.cgi?id=42829 Steve stefan.bo...@gmail.com changed: What|Removed |Added CC||ru...@rustcorp.com.au Kernel Version|3.3.0-rc5 |3.2 -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are watching the assignee of the bug. -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
[Bug 42829] KVM Guest with virtio network driver loses network connectivity
https://bugzilla.kernel.org/show_bug.cgi?id=42829 --- Comment #1 from Steve stefan.bo...@gmail.com 2012-02-28 13:49:24 --- Also this sites described similar problems: https://bugzilla.redhat.com/show_bug.cgi?id=520119 http://www.mail-archive.com/scientific-linux-users@ listserv.fnal.gov/msg10661.html Let me know how could I help in solving above issue. Thank you for your time. -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are watching the assignee of the bug. -- To unsubscribe from this list: send the line unsubscribe kvm in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
