Disable new_uninit feature

Author: mkroening

src/arch/x86_64/kernel/scheduler.rs

@@ -274,10 +274,7 @@ impl TaskTLS {
 			// So the thread pointer needs to be `block_ptr + tls_offset`.
 			// Allocating only tls_len bytes would be enough to hold the TLS block.
 			// For the thread pointer to be sound though, we need it's value to be included in or one byte past the same allocation.
-			let block = Box::<[u8]>::new_zeroed_slice(tls_offset);
-
-			// SAFETY: All u8s can hold the bit-pattern 0 as a valid value
-			unsafe { block.assume_init() }
+			vec![0; tls_offset].into_boxed_slice()
 		};
 
 		// Initialize beginning of the TLS block with TLS initialization image

src/drivers/net/rtl8139.rs

@@ -519,19 +519,8 @@ pub fn init_device(adapter: &pci::PciAdapter) -> Result<RTL8139Driver, DriverErr
 		outl(iobase + TCR, TCR_IFG | TCR_MXDMA0 | TCR_MXDMA1 | TCR_MXDMA2);
 	}
 
-	let rxbuffer = Box::<[u8]>::try_new_zeroed_slice(RX_BUF_LEN).map_err(|_| {
-		error!("Unable to allocate buffers for RTL8139");
-		DriverError::InitRTL8139DevFail(RTL8139Error::Unknown)
-	})?;
-	// SAFETY: All u8s can hold the bit-pattern 0 as a valid value
-	let rxbuffer = unsafe { rxbuffer.assume_init() };
-
-	let txbuffer = Box::<[u8]>::try_new_zeroed_slice(NO_TX_BUFFERS * TX_BUF_LEN).map_err(|_| {
-		error!("Unable to allocate buffers for RTL8139");
-		DriverError::InitRTL8139DevFail(RTL8139Error::Unknown)
-	})?;
-	// SAFETY: All u8s can hold the bit-pattern 0 as a valid value
-	let txbuffer = unsafe { txbuffer.assume_init() };
+	let rxbuffer = vec![0; RX_BUF_LEN].into_boxed_slice();
+	let txbuffer = vec![0; NO_TX_BUFFERS * TX_BUF_LEN].into_boxed_slice();
 
 	debug!(
 		"Allocate TxBuffer at {:p} and RxBuffer at {:p}",

src/lib.rs

@@ -12,7 +12,6 @@
 #![feature(asm_const)]
 #![feature(linked_list_cursors)]
 #![feature(naked_functions)]
-#![feature(new_uninit)]
 #![feature(specialization)]
 #![feature(strict_provenance)]
 #![feature(is_some_and)]