netdev - Re: [net 1/8] net/mlx5: Fix error path in multi-packet WQE transmit

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Message-Id: 
 <172791543351.1385485.12951789236369378613.git-patchwork-notify@kernel.org>
Date: Thu, 03 Oct 2024 00:30:33 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Saeed Mahameed <saeed@...nel.org>
Cc: davem@...emloft.net, kuba@...nel.org, pabeni@...hat.com,
 edumazet@...gle.com, saeedm@...dia.com, netdev@...r.kernel.org,
 tariqt@...dia.com, gal@...dia.com, leonro@...dia.com, gbayer@...ux.ibm.com,
 yanjun.zhu@...ux.dev, maxtram95@...il.com
Subject: Re: [net 1/8] net/mlx5: Fix error path in multi-packet WQE transmit

Hello:

This series was applied to netdev/net.git (main)
by Saeed Mahameed <saeedm@...dia.com>:

On Wed, 25 Sep 2024 13:20:06 -0700 you wrote:
> From: Gerd Bayer <gbayer@...ux.ibm.com>
> 
> Remove the erroneous unmap in case no DMA mapping was established
> 
> The multi-packet WQE transmit code attempts to obtain a DMA mapping for
> the skb. This could fail, e.g. under memory pressure, when the IOMMU
> driver just can't allocate more memory for page tables. While the code
> tries to handle this in the path below the err_unmap label it erroneously
> unmaps one entry from the sq's FIFO list of active mappings. Since the
> current map attempt failed this unmap is removing some random DMA mapping
> that might still be required. If the PCI function now presents that IOVA,
> the IOMMU may assumes a rogue DMA access and e.g. on s390 puts the PCI
> function in error state.
> 
> [...]

Here is the summary with links:
  - [net,1/8] net/mlx5: Fix error path in multi-packet WQE transmit
    https://git.kernel.org/netdev/net/c/2bcae12c795f
  - [net,2/8] net/mlx5: Added cond_resched() to crdump collection
    https://git.kernel.org/netdev/net/c/ec7931558941
  - [net,3/8] net/mlx5e: Fix NULL deref in mlx5e_tir_builder_alloc()
    https://git.kernel.org/netdev/net/c/f25389e77950
  - [net,4/8] net/mlx5: Fix wrong reserved field in hca_cap_2 in mlx5_ifc
    https://git.kernel.org/netdev/net/c/19da17010a55
  - [net,5/8] net/mlx5: HWS, fixed double-free in error flow of creating SQ
    https://git.kernel.org/netdev/net/c/d8c561741ef8
  - [net,6/8] net/mlx5: HWS, changed E2BIG error to a negative return code
    https://git.kernel.org/netdev/net/c/d15525f30010
  - [net,7/8] net/mlx5e: SHAMPO, Fix overflow of hd_per_wq
    https://git.kernel.org/netdev/net/c/023d2a43ed0d
  - [net,8/8] net/mlx5e: Fix crash caused by calling __xfrm_state_delete() twice
    https://git.kernel.org/netdev/net/c/7b124695db40

You are awesome, thank you!
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