kernel.js: cmdline_size is only valid for linux boot protocol 2.06+

copy · Apr 16, 2024 · 4efc371 · 4efc371
1 parent 2bcfa9d
commit 4efc371
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/src/kernel.js b/src/kernel.js
@@ -89,7 +89,7 @@ function load_kernel(mem8, bzimage, initrd, cmdline)
     const kernel_alignment = bzimage32[LINUX_BOOT_HDR_KERNEL_ALIGNMENT >> 2];
     const relocatable_kernel = bzimage8[LINUX_BOOT_HDR_RELOCATABLE_KERNEL];
     const min_alignment = bzimage8[LINUX_BOOT_HDR_MIN_ALIGNMENT];
-    const cmdline_size = bzimage32[LINUX_BOOT_HDR_CMDLINE_SIZE >> 2];
+    const cmdline_size = protocol >= 0x206 ? bzimage32[LINUX_BOOT_HDR_CMDLINE_SIZE >> 2] : 255;
     const payload_offset = bzimage32[LINUX_BOOT_HDR_PAYLOAD_OFFSET >> 2];
     const payload_length = bzimage32[LINUX_BOOT_HDR_PAYLOAD_LENGTH >> 2];
     const pref_address = bzimage32[LINUX_BOOT_HDR_PREF_ADDRESS >> 2];