Anatol Belski c79f3acfab block: Validate sector range for DISCARD and WRITE_ZEROES requests ...

Add range validation for DISCARD and WRITE_ZEROES, matching the
existing check in the read/write path. Per virtio spec section
5.2.6.1, a driver must not submit a request which would cause a
read or write beyond capacity. Use checked_add to guard against
overflow, then compare against disk_nsectors.

Without this, requests beyond device capacity pass through to the
host punch_hole/write_zeroes calls, relying on backend specific
behavior rather than returning VIRTIO_BLK_S_IOERR consistently.

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

2026-03-22 19:12:52 +00:00

..

src

block: Validate sector range for DISCARD and WRITE_ZEROES requests

2026-03-22 19:12:52 +00:00

Cargo.toml

misc: make MSRV workspace-wide for cloud-hypervisor dependencies

2026-03-13 01:30:25 +00:00