Re: [PATCH rdma-next] RDMA/uverbs: Fix mmap_lock/disassociation_lock circular dependency
From: Leon Romanovsky
Date: Tue Sep 01 2026 - 11:02:59 EST
On Tue, 11 Aug 2026 19:19:16 +0300, Edward Srouji wrote:
> Commit 51976c6cd786 ("RDMA/core: Provide rdma_user_mmap_disassociate()
> to disassociate mmap pages") introduced disassociation_lock to protect
> new mmap registrations against uverbs_user_mmap_disassociate(), but
> created an ABBA deadlock:
>
> Thread A (mmap / fork):
> mmap_lock -> disassociation_lock
>
> [...]
Applied, thanks!
[1/1] RDMA/uverbs: Fix mmap_lock/disassociation_lock circular dependency
https://git.kernel.org/rdma/rdma/c/a44a3f175eaee7
Best regards,
--
Leon Romanovsky <leon@xxxxxxxxxx>