** Description changed:
Microsoft has identified a multiple-NIC-deadlock issue on Hyper-V VMs. This
bug is fixed by the following commit, which is in mainline as of v4.20-rc6:
37c2578c0c40 ("Drivers: hv: vmbus: Offload the handling of channels to two
workqueues")
A second commit is also needed to prevent a deadlock with single NIC VMs.
This commit is in mainline as of 4.19-rc3:
e04e7a7bbd4b ("hv_netvsc: Fix a deadlock by getting rtnl lock earlier in
netvsc_probe()")
- The Disco development release has been rebased to upstream 4.19, so no
- prereqs are needed, only commit 37c2578c0c40.
+ The Disco development release has been rebased to upstream 4.19, so it only
needs one prereq:
+ 4.20-rc5 - eceb05965489 ("Drivers: hv: vmbus: check the creation_status in
vmbus_establish_gpadl()")
- linux-azure, Bionic and Cosmic(4.15+ kernels) require the following two
dependent commits:
+ linux-azure, Bionic and Cosmic(4.15+ kernels) require the following three
dependent commits:
4.19-rc1 - 50229128727f ("Drivers: hv: vmbus: Fix the offer_in_progress in
vmbus_process_offer()")
4.19-rc4 - 6712cc9c2211 ("vmbus: don't return values for uninitalized
channels")
+ 4.20-rc5 - eceb05965489 ("Drivers: hv: vmbus: check the creation_status in
vmbus_establish_gpadl()")
- Xenial(4.14 and older kernels) require the following four dependent commits:
+ Xenial(4.14 and older kernels) require the following five dependent commits:
4.15-rc1 - c2e5df616e1a ("vmbus: add per-channel sysfs info")
4.15-rc6 - 869b5567e12f ("vmbus: unregister device_obj->channels_kset")
4.19-rc1 - 50229128727f ("Drivers: hv: vmbus: Fix the offer_in_progress in
vmbus_process_offer()")
4.19-rc4 - 6712cc9c2211 ("vmbus: don't return values for uninitalized
channels")
+ 4.20-rc5 - eceb05965489 ("Drivers: hv: vmbus: check the creation_status in
vmbus_establish_gpadl()")
** Description changed:
Microsoft has identified a multiple-NIC-deadlock issue on Hyper-V VMs. This
bug is fixed by the following commit, which is in mainline as of v4.20-rc6:
37c2578c0c40 ("Drivers: hv: vmbus: Offload the handling of channels to two
workqueues")
A second commit is also needed to prevent a deadlock with single NIC VMs.
This commit is in mainline as of 4.19-rc3:
e04e7a7bbd4b ("hv_netvsc: Fix a deadlock by getting rtnl lock earlier in
netvsc_probe()")
- The Disco development release has been rebased to upstream 4.19, so it only
needs one prereq:
+ The Disco development release has been rebased to upstream 4.19, so it only
needs one dependent commit:
4.20-rc5 - eceb05965489 ("Drivers: hv: vmbus: check the creation_status in
vmbus_establish_gpadl()")
linux-azure, Bionic and Cosmic(4.15+ kernels) require the following three
dependent commits:
4.19-rc1 - 50229128727f ("Drivers: hv: vmbus: Fix the offer_in_progress in
vmbus_process_offer()")
4.19-rc4 - 6712cc9c2211 ("vmbus: don't return values for uninitalized
channels")
4.20-rc5 - eceb05965489 ("Drivers: hv: vmbus: check the creation_status in
vmbus_establish_gpadl()")
Xenial(4.14 and older kernels) require the following five dependent commits:
4.15-rc1 - c2e5df616e1a ("vmbus: add per-channel sysfs info")
4.15-rc6 - 869b5567e12f ("vmbus: unregister device_obj->channels_kset")
4.19-rc1 - 50229128727f ("Drivers: hv: vmbus: Fix the offer_in_progress in
vmbus_process_offer()")
4.19-rc4 - 6712cc9c2211 ("vmbus: don't return values for uninitalized
channels")
4.20-rc5 - eceb05965489 ("Drivers: hv: vmbus: check the creation_status in
vmbus_establish_gpadl()")
** Also affects: linux-azure (Ubuntu)
Importance: Undecided
Status: New
** No longer affects: linux-azure (Ubuntu Xenial)
** No longer affects: linux-azure (Ubuntu Bionic)
** No longer affects: linux-azure (Ubuntu Cosmic)
** No longer affects: linux-azure (Ubuntu Disco)
** Changed in: linux-azure (Ubuntu)
Status: New => Triaged
** Changed in: linux-azure (Ubuntu)
Importance: Undecided => Medium
** Changed in: linux-azure (Ubuntu)
Assignee: (unassigned) => Joseph Salisbury (jsalisbury)
** Description changed:
Microsoft has identified a multiple-NIC-deadlock issue on Hyper-V VMs. This
bug is fixed by the following commit, which is in mainline as of v4.20-rc6:
37c2578c0c40 ("Drivers: hv: vmbus: Offload the handling of channels to two
workqueues")
A second commit is also needed to prevent a deadlock with single NIC VMs.
This commit is in mainline as of 4.19-rc3:
e04e7a7bbd4b ("hv_netvsc: Fix a deadlock by getting rtnl lock earlier in
netvsc_probe()")
- The Disco development release has been rebased to upstream 4.19, so it only
needs one dependent commit:
- 4.20-rc5 - eceb05965489 ("Drivers: hv: vmbus: check the creation_status in
vmbus_establish_gpadl()")
+ The Disco development release has been rebased to upstream 4.19, and it
+ already has commit eceb0596548. Disco only needs 37c2578c0c40.
linux-azure, Bionic and Cosmic(4.15+ kernels) require the following three
dependent commits:
4.19-rc1 - 50229128727f ("Drivers: hv: vmbus: Fix the offer_in_progress in
vmbus_process_offer()")
4.19-rc4 - 6712cc9c2211 ("vmbus: don't return values for uninitalized
channels")
4.20-rc5 - eceb05965489 ("Drivers: hv: vmbus: check the creation_status in
vmbus_establish_gpadl()")
Xenial(4.14 and older kernels) require the following five dependent commits:
4.15-rc1 - c2e5df616e1a ("vmbus: add per-channel sysfs info")
4.15-rc6 - 869b5567e12f ("vmbus: unregister device_obj->channels_kset")
4.19-rc1 - 50229128727f ("Drivers: hv: vmbus: Fix the offer_in_progress in
vmbus_process_offer()")
4.19-rc4 - 6712cc9c2211 ("vmbus: don't return values for uninitalized
channels")
4.20-rc5 - eceb05965489 ("Drivers: hv: vmbus: check the creation_status in
vmbus_establish_gpadl()")
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1807757
Title:
Drivers: hv: vmbus: Offload the handling of channels to two workqueues
Status in linux package in Ubuntu:
In Progress
Status in linux-azure package in Ubuntu:
Triaged
Status in linux source package in Xenial:
Triaged
Status in linux source package in Bionic:
Triaged
Status in linux source package in Cosmic:
Triaged
Status in linux source package in Disco:
In Progress
Bug description:
Microsoft has identified a multiple-NIC-deadlock issue on Hyper-V VMs. This
bug is fixed by the following commit, which is in mainline as of v4.20-rc6:
37c2578c0c40 ("Drivers: hv: vmbus: Offload the handling of channels to two
workqueues")
A second commit is also needed to prevent a deadlock with single NIC VMs.
This commit is in mainline as of 4.19-rc3:
e04e7a7bbd4b ("hv_netvsc: Fix a deadlock by getting rtnl lock earlier in
netvsc_probe()")
The Disco development release has been rebased to upstream 4.19, and
it already has commit eceb0596548. Disco only needs 37c2578c0c40.
linux-azure, Bionic and Cosmic(4.15+ kernels) require the following three
dependent commits:
4.19-rc1 - 50229128727f ("Drivers: hv: vmbus: Fix the offer_in_progress in
vmbus_process_offer()")
4.19-rc4 - 6712cc9c2211 ("vmbus: don't return values for uninitalized
channels")
4.20-rc5 - eceb05965489 ("Drivers: hv: vmbus: check the creation_status in
vmbus_establish_gpadl()")
Xenial(4.14 and older kernels) require the following five dependent commits:
4.15-rc1 - c2e5df616e1a ("vmbus: add per-channel sysfs info")
4.15-rc6 - 869b5567e12f ("vmbus: unregister device_obj->channels_kset")
4.19-rc1 - 50229128727f ("Drivers: hv: vmbus: Fix the offer_in_progress in
vmbus_process_offer()")
4.19-rc4 - 6712cc9c2211 ("vmbus: don't return values for uninitalized
channels")
4.20-rc5 - eceb05965489 ("Drivers: hv: vmbus: check the creation_status in
vmbus_establish_gpadl()")
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1807757/+subscriptions
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