APPLIED: [SRU][P/N/J:linux-azure][PATCH 0/1] azure: backport ""hv_netvsc: fix loss of early receive events from host during channel open"

[John Cabaj]

On 10/11/25 8:05 PM, Vinicius Peixoto wrote:
> BugLink: https://bugs.launchpad.net/bugs/2127705
> 
> [Impact]
> 
> A race condition in the hv_netvsc module can lead to a lockup where the RX queue of the network device becomes stuck, degrading the performance for users of the Azure kernel.
> 
> [Fix]
> 
> The following fix was introduced in 6.17:
> 
> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9448ccd85336
> 
> Backport it to the P/N/J:azure trees (Questing already has it) in order to fix the issue for users of the linux-azure kernel.
> 
> [Test plan]
> 
> Build tested only; Microsoft will validate the bug fix.
> 
> [Where problems could occur]
> 
> Issues with this patch could cause hangs, lockups or generally some kind of network performance degradation for virtual machines running on top of Hyper-V.
> 
> [Other info]
> SF #00418032
> 
> Dipayaan Roy (1):
>    net: hv_netvsc: fix loss of early receive events from host during
>      channel open.
> 
>   drivers/net/hyperv/netvsc.c       |  5 ++---
>   drivers/net/hyperv/rndis_filter.c | 12 +++++++++---
>   2 files changed, 11 insertions(+), 6 deletions(-)
> 

Applied to Plucky, Noble, and Jammy linux-azure master-next branches.


j-c