ACK/Cmnt: [SRU][Trusty][PATCH 0/3] BUG: scheduling while atomic on VMware 6.0 and late.

Stefan Bader stefan.bader at canonical.com
Thu Aug 16 09:08:36 UTC 2018


On 31.07.2018 15:49, Eric Desrochers wrote:
> A "BUG: scheduling while atomic" situation randomly occur when VMware guess is running Ubuntu kernel 3.13 series and hosted on VMware 6.0 and later,
> with VMCI (Virtual Machine Communication Interface) turned on.
> 
> Upstream discussion confirms the need of the 3 upstream commits : https://patchwork.kernel.org/patch/9948741/
> The VMware author of the patch suggested a backport from upstream of 3 patches he made.
> 
> The patches has been tested for more than 3 weeks now with a user affected by this situation, without any problem on both VMware < & > than VMware 6.0, and it run smootly for both with no new occurence ofthe bug. No regression found for Vmware < 6.0 and no occurence of a crash for VMware > 6.0
> 
> BugLink: https://bugs.launchpad.net/bugs/1780470
> 
> Eric Desrochers (1):
>   VSOCK: Detach QP check should filter out non matching QPs.
> 
> Jorgen Hansen (2):
>   VSOCK: sock_put wasn't safe to call in interrupt context
>   VSOCK: Fix lockdep issue.
> 
>  net/vmw_vsock/vmci_transport.c | 173 ++++++++++++++++-----------------
>  net/vmw_vsock/vmci_transport.h |   4 +-
>  2 files changed, 86 insertions(+), 91 deletions(-)
> 
Based on successful testing and limited risk due to changes being made only to a
very specific driver.

Acked-by: Stefan Bader <stefan.bader at canonical.com>

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