** Changed in: linux (Ubuntu Bionic)
Status: In Progress => Fix Committed
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https://bugs.launchpad.net/bugs/1788222
Title:
Bugfix for handling of shadow doorbell buffer
Status in linux package in Ubuntu:
In Progress
Status in linux-gcp package in Ubuntu:
New
Status in linux source package in Xenial:
In Progress
Status in linux source package in Bionic:
Fix Committed
Status in linux source package in Cosmic:
In Progress
Bug description:
This request is to pull in the following patch for NVMe bug from
https://lore.kernel.org/patchwork/patch/974880/ in the linux-gcp
kernel:
===
This patch adds full memory barrier into nvme_dbbuf_update_and_check_event
function to ensure that the shadow doorbell is written before reading
EventIdx from memory. This is a critical bugfix for initial patch that
added support for shadow doorbell into NVMe driver[...].
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