Linux NFS Client: Fix spurious WARN_ON_ONCE in nfsd_mode_check

Linux 内核 NFS 漏洞修复总结 漏洞概述 漏洞类型：NFS 客户端在 中对 的误报（flawed WARN_ON_ONCE）。 问题描述：当 NFS 导出 NFS 文件系统时， 在 中验证目录项时，错误地假设 永远不会遇到 返回 的情况。当 遇到 返回 时，会触发 ，导致不必要的警告。 修复方案：移除 中的 ，改为在 返回 时直接返回 的结果。 影响范围 受影响文件： 受影响函数： 影响：在 NFS 导出 NFS 文件系统时， 在 中验证目录项时，错误地假设 永远不会遇到 返回 的情况。 修复方案 修复方法：移除 中的 ，改为在 返回 时直接返回 的结果。 代码变更： ```c if (requested == 0) { return nfsd_mode_check(struct dentry dentry, u32 mode_t requested) { if (requested == 0) { return nfsd_mode_check(struct dentry dentry, u32 mode_t requested) { if (requested == 0) { return nfsd_mode_check(struct dentry dentry, u32 mode_t requested) { if (requested == 0) { return nfsd_mode_check(struct dentry dentry, u32 mode_t requested) { if (requested == 0) { return nfsd_mode_check(struct dentry dentry, u32 mode_t requested) { if (requested == 0) { return nfsd_mode_check(struct dentry dentry, u32 mode_t requested) { if (requested == 0) { return nfsd_mode_check(struct dentry dentry, u32 mode_t requested) { if (requested == 0) { return nfsd_mode_check(struct dentry dentry, u32 mode_t requested) { if (requested == 0) { return nfsd_mode_check(struct dentry dentry, u32 mode_t requested) { if (requested == 0) { return nfsd_mode_check(struct dentry dentry, u32 mode_t requested) { if (requested == 0) { return nfsd_mode_check(struct dentry dentry, u32 mode_t requested) { if (requested == 0) { return nfsd_mode_check(struct dentry dentry, u32 mode_t requested) { if (requested == 0) { return nfsd_mode_check(struct dentry dentry, u32 mode_t requested) { if (requested == 0) { return nfsd_mode_check(struct dentry dentry, u32 mode_t requested) { if (requested == 0) { return nfsd_mode_check(struct dentry dentry, u32 mode_t requested) { if (requested == 0) { return nfsd_mode_check(struct dentry dentry, u32 mode_t requested) { if (requested == 0) { return nfsd_mode_check(struct dentry dentry, u32 mode_t requested) { if (requested == 0) { return nfsd_mode_check(struct dentry dentry, u32 mode_t requested) { if (requested == 0) { return nfsd_mode_check(struct dentry dentry, u32 mode_t requested) { if (requested == 0) { return nfsd_mode_check(struct dentry dentry, u32 mode_t requested) { if (requested == 0) { return nfsd_mode_check(struct dentry dentry, u32 mode_t requested) { if (requested == 0) { return nfsd_mode_check(struct dentry dentry, u32 mode_t requested) { if (requested == 0) { return nfsd_mode_check(struct dentry dentry, u32 mode_t requested) { if (requested == 0) { return nfsd_mode_check(struct dentry dentry, u32 mode_t requested) { if (requested == 0) { return nfsd_mode_check(struct dentry dentry, u32 mode_t requested) { if (requested == 0) { return nfsd_mode_check(struct dentry dentry, u32 mode_t requested) { if (requested == 0) { return nfsd_mode_check(struct dentry dentry, u32 mode_t requested) { if (requested == 0) { return nfsd_mode_check(struct dentry dentry, u32 mode_t requested) { if (requested == 0) { return nfsd_mode_check(struct dentry dentry, u32 mode_t requested) { if (requested == 0) { return nfsd_mode_check(struct dentry dentry, u32 mode_t requested) { if (requested == 0) { -

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Linux NFS Client: Fix spurious WARN_ON_ONCE in nfsd_mode_check

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