Anatol Belski 35609ff777 net_util: queue_pair: Surface malformed descriptors on the used ring ...

Several error paths in process_desc_chain returned the error before
calling queue.add_used for the offending descriptor. The affected
variants were DescriptorChainInvalid, DescriptorChainTooShort,
DescriptorInvalidHeader, and the GuestMemory variants raised during
descriptor chain translation, slice retrieval, or the num_buffers
write on the RX side.

Without an entry in the used ring the head descriptor remained owned
by the device. A guest that kept submitting bad chains could deplete
the queue over time.

Mark the head descriptor used with length 0 before propagating the
error to the caller, so the ring stays consistent regardless of how
the device decides to react to a guest induced failure.

Signed-off-by: Anatol Belski <anbelski@linux.microsoft.com>

2026-05-06 21:45:18 +01:00

..

src

net_util: queue_pair: Surface malformed descriptors on the used ring

2026-05-06 21:45:18 +01:00

build.rs

build: Add "fuzzing" as a valid cfg(..) attribute

2024-05-08 08:10:28 +00:00

Cargo.toml

net_gen: replace net_gen with libc

2026-03-23 12:50:38 +00:00