Hello:
This patch was applied to netdev/net-next.git (main)
by Jakub Kicinski [off-list ref]:
On Tue, 10 Nov 2026 21:10:29 +0530 you wrote:
vmxnet3_probe_device() maps the whole struct vmxnet3_adapter with
dma_map_single() and passes its address to the device as the "driver
data" (misc.ddPA/ddLen) in the shared area.
The adapter is the netdev private area, and alloc_netdev_mqs() allocates
it with kvzalloc(). struct vmxnet3_adapter embeds 32 tx and 32 rx queues
and is well above PAGE_SIZE, so when a high-order allocation fails the
adapter ends up in vmalloc memory. dma_map_single() then warns
("rejecting DMA map of vmalloc memory") and returns DMA_MAPPING_ERROR,
and probe fails with -EFAULT. syzbot hit this with page allocation
fault injection.
[...]
Here is the summary with links:
- [net-next,v2] vmxnet3: stop DMA mapping the adapter structure
https://git.kernel.org/netdev/net-next/c/42abea827cf2
You are awesome, thank you!
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