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/sh | Bin 204136 -> 204528 bytes 1 file changed, 0 insertions(+), 0 deletions(-) (limited to 'build/user/sh') diff --git a/build/user/sh b/build/user/sh index 0637773..4b9c8c4 100755 Binary files a/build/user/sh and b/build/user/sh differ -- cgit v1.2.3