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  • !33

*SMP lost-wakeup race 根治(问题 #9)**(`sync/wait_queue.rs`, `task/mod.rs`):

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Merged StellarOS requested to merge fix/fat32-cluster-writeback into busybox/ltp May 03, 2026
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  • Changes 8

Created by: hjg0603

  • WaitQueue::wait() 中 push_back + 设置 Blocked 状态在同一 waiters 锁内原子完成,消除 wait/exit 之间的 race window
  • wakeup_task() 增加 Blocked 状态检查,防止双重入队

chdir 内核态 panic 修复(问题 #10)(mm/page_table.rs, syscall/fs.rs):

  • translated_str() 中 translate_va 返回 None 时改为 break 而非 unwrap panic
  • sys_chdir() 入口增加防御性空指针检查

FAT32 簇写回三个 Bug 修复(fs/fat32/file.rs, fs/fat32/fs.rs):

  • Bug A:read() 改用 *self.first_cluster.lock() 而非构造时 entry 快照
  • Bug B:read_all() 构造临时 entry 覆盖 fst_clus_lo/hi 后再读取数据
  • Bug C:update_file_size() 重写,扫描目录时维护 lfn_buf,短文件名或 LFN 任一匹配即更新,修复 LFN 文件写回失效
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Source branch: fix/fat32-cluster-writeback