From 10614e04929a6d109a5e90524e446b637aaf0c13 Mon Sep 17 00:00:00 2001 From: Richard Qin Date: Sat, 3 Jan 2026 02:13:08 +0800 Subject: Fix: critical malloc size calculation bug Summary: - Fixed an integer arithmetic error in malloc() where 'nunits' was initialized to 0, causing incorrect heap sizing. - This bug caused malloc to return pointers pointing to unmapped memory pages, leading to Store Page Fault (scause 15) at process boundaries. - Switched memory allocator logic to use byte-based size calculation instead of K&R style units to prevent off-by-one errors. Improvements: - Shell now starts successfully without segfaults. --- build/user/initcode | Bin 30472 -> 30504 bytes 1 file changed, 0 insertions(+), 0 deletions(-) (limited to 'build/user/initcode') diff --git a/build/user/initcode b/build/user/initcode index 62c8987..48fcfff 100755 Binary files a/build/user/initcode and b/build/user/initcode differ -- cgit v1.2.3