On Tue, Dec 21, 2021 at 09:20:28AM +0100, Karsten Graul wrote:

On 21/12/2021 09:04, Tony Lu wrote:

quoted

Hello,

During developing and testing of SMC (net/smc), We found a problem,
when SMC released linkgroup or link, it called ib_dereg_mr to release
resources, then it panicked in mlx5_ib_dereg_mr. After investigation,
we found this panic was introduce by this commit:

    f0ae4afe3d35 ("RDMA/mlx5: Fix releasing unallocated memory in dereg MR flow")

+1, this panic in our environment:

I assume that this patch will fix.
https://lore.kernel.org/all/f298db4ec5fdf7a2d1d166ca2f66020fd9397e5c.1640079962.git.leonro@nvidia.com (local)

Thanks