Public bug reported:
BugLink: https://bugs.launchpad.net/bugs/2122719
[Impact]
A memory leak which was introduced in the smb.ko module by commit
f3dc1bdb6b0b ("cifs: Fix writeback data corruption") is causing hangups
on VMs due to memory starvation. This introduces a high risk of data
corruption for users running the 6.8 Azure kernel.
[Fix]
Backport the fix:
https://lore.kernel.org/linux-
cifs/[email protected]/
to the n:azure tree.
[Test plan]
Build tested only; Microsoft will validate the bug fix.
[Where problems could occur]
Issues with this patch could cause hangs/lockups during CIFS writeback
operations, particularly in systems with a high CPU count.
[Other info]
SF #00418307
** Affects: linux-azure (Ubuntu)
Importance: Critical
Assignee: Vinicius Peixoto (vpeixoto)
Status: In Progress
** Affects: linux-azure (Ubuntu Noble)
Importance: Critical
Assignee: Vinicius Peixoto (vpeixoto)
Status: In Progress
** Also affects: linux-azure (Ubuntu Noble)
Importance: Undecided
Status: New
** Changed in: linux-azure (Ubuntu)
Importance: Undecided => Critical
** Changed in: linux-azure (Ubuntu Noble)
Importance: Undecided => Critical
** Changed in: linux-azure (Ubuntu)
Assignee: (unassigned) => Vinicius Peixoto (vpeixoto)
** Changed in: linux-azure (Ubuntu Noble)
Assignee: (unassigned) => Vinicius Peixoto (vpeixoto)
** Changed in: linux-azure (Ubuntu Noble)
Status: New => In Progress
** Changed in: linux-azure (Ubuntu)
Status: New => In Progress
** Description changed:
+ BugLink: https://bugs.launchpad.net/bugs/2122719
+
[Impact]
A memory leak which was introduced in the smb.ko module by commit
f3dc1bdb6b0b ("cifs: Fix writeback data corruption") is causing hangups
on VMs due to memory starvation. This introduces a high risk of data
corruption for users running the 6.8 Azure kernel.
[Fix]
Backport the fix:
https://lore.kernel.org/linux-
cifs/[email protected]/
to the n:azure tree.
[Test plan]
Build tested only; Microsoft will validate the bug fix.
[Where problems could occur]
Issues with this patch could cause hangs/lockups during CIFS writeback
operations, particularly in systems with a high CPU count.
[Other info]
SF #00418307
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https://bugs.launchpad.net/bugs/2122719
Title:
azure: backport "cifs: fix pagecache leak when do writepages"
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