linux-kernel - Re: [PATCH rdma-next] RDMA/mlx5: Fix UMR hang in LAG error state unload

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Message-Id: <176875338879.525622.17025100833914120656.b4-ty@kernel.org>
Date: Sun, 18 Jan 2026 11:23:08 -0500
From: Leon Romanovsky <leon@...nel.org>
To: Jason Gunthorpe <jgg@...pe.ca>, Patrisious Haddad <phaddad@...dia.com>, 
 Michael Guralnik <michaelgur@...dia.com>, 
 Edward Srouji <edwards@...dia.com>
Cc: linux-rdma@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Chiara Meiohas <cmeiohas@...dia.com>, Maher Sanalla <msanalla@...dia.com>, 
 Mark Bloch <mbloch@...dia.com>
Subject: Re: [PATCH rdma-next] RDMA/mlx5: Fix UMR hang in LAG error state
 unload


On Tue, 13 Jan 2026 15:37:10 +0200, Edward Srouji wrote:
> During firmware reset in LAG mode, a race condition causes the driver
> to hang indefinitely while waiting for UMR completion during device
> unload. See [1].
> 
> In LAG mode the bond device is only registered on the master, so it
> never sees sys_error events from the slave.
> During firmware reset this causes UMR waits to hang forever on unload
> as the slave is dead but the master hasn't entered error state yet, so
> UMR posts succeed but completions never arrive.
> 
> [...]

Applied, thanks!

[1/1] RDMA/mlx5: Fix UMR hang in LAG error state unload
      https://git.kernel.org/rdma/rdma/c/ebc2164a4cd431

Best regards,
-- 
Leon Romanovsky <leon@...nel.org>