v0.5.3

0.5.3 (2026-07-24)

Bug Fixes

• net: detect and reap zombie fast-path flows on both legs (dc0295e)
• net: start the dead-flow deadline at solicitation, not the last guest frame (bafee56)
• virtio: drop RX frames that don't fit the chain instead of truncating (b341beb)
• virtio: poison a chain on an out-of-RAM descriptor; update poll_rx docs (f33337c)

Performance Improvements

• agent: expedite RCU grace periods to cut runc create ~8x (ABX-496) (6e67d6f)
• runtime: exec the container runtime from a read-only block image (ABX-498) (#499) (bde8fb0)
• storage: ext4 metadata volume for fsync-hot boltdb state (ABX-496) (#497) (e4aca03)

Tests

• e2e: live validation of the host-networking reconciler (#352) (696ea7f)
• e2e: observe the removal before timing the sweep; pin the fail-safe (d46dbcd)

Styles

• e2e: apply rustfmt to reconciler_teardown test (f2a1050)

Miscellaneous Chores

• assets: bump boot assets to 0.6.10 (FEX procfs fix, ABX-494) (4b52760)