Fixed page crash (Aw, Snap!) issue when we reload any page multiple times

[itskartike910]

User description

Description:

Added comprehensive null pointer checks to prevent segmentation faults during frame lifecycle transitions. The fix ensures proper validation before accessing render frame host properties and gracefully handles cases where the frame becomes null during async operations.

This resolves "Aw, Snap!" tab crashes that were occurring when processing action URLs and anchor elements in the renderer process.

Issue

---

PR Type

Bug fix

---

Description

• Added comprehensive null checks for render_frame_host and render_frame.

  • Prevents segmentation faults during frame lifecycle transitions.
  • Ensures safe access to frame properties in async operations.

• Improved error logging for null pointer scenarios.

• Restricted anchor element processing to x.com pages only.

---

Changes walkthrough 📝

Relevant files

Bug fix

content_action_url_driver.cc Add null checks and error handling for RenderFrameHost      src/components/action_url/content/browser/content_action_url_driver.cc Added null pointer checks for render_frame_host_ in all key methods. Improved error logging when encountering null pointers. Ensured safe interface binding and method execution only when host is valid. Prevented segmentation faults by early returns on null. +40/-1    action_url_agent.cc Add null checks and restrict anchor processing to x.com    src/components/action_url/content/renderer/action_url_agent.cc Added null checks for render_frame() in all relevant methods. Improved error logging for null frame scenarios. Restricted anchor element processing to x.com pages. Ensured safe calls to driver and document methods. +56/-1

---

Need help?

Type /help how to ... in the comments thread for any questions about Qodo Merge usage.

Check out the documentation for more information.

[qodo-merge-pro]

PR Reviewer Guide 🔍

Here are some key observations to aid the review process:

⏱️ Estimated effort to review: 2 🔵🔵⚪⚪⚪

🧪 No relevant tests

🔒 No security concerns identified

⚡ Recommended focus areas for review Unbound Remote The code introduces an uninitialized action_url_agent_unbound_ variable in GetActionUrlAgent() that's returned when render_frame_host_ is null. This variable isn't declared in the visible code and might cause undefined behavior. if (!render_frame_host_) { LOG(ERROR) << "AMIT GetActionUrlAgent: render_frame_host_ is null!"; return action_url_agent_unbound_; } Feature Restriction The code restricts anchor element processing to x.com pages only. This might be intentional but could limit functionality if the feature should work on other domains as well. // Enabling only for x.com pages GURL page_url = GURL(doc.Url()); if (!page_url.is_valid() || page_url.host() != "x.com") { LOG(INFO) << "AMIT Skipping non-x.com page"; return; }

[qodo-merge-pro]

PR Code Suggestions ✨

Explore these optional code suggestions:

Category	Suggestion	Impact
Possible issue	Initialize unbound remote variable Initialize action_url_agent_unbound_ in the constructor. This variable is used in GetActionUrlAgent() when render_frame_host_ is null, but it's not initialized anywhere, which could lead to undefined behavior. src/components/action_url/content/browser/content_action_url_driver.cc [50-56] ContentActionUrlDriver::ContentActionUrlDriver( content::RenderFrameHost* render_frame_host) - : render_frame_host_(render_frame_host) { + : render_frame_host_(render_frame_host), action_url_agent_unbound_() { if (!render_frame_host_) { LOG(ERROR) << "AMIT ContentActionUrlDriver: render_frame_host is null!"; return; } Apply / Chat Suggestion importance[1-10]: 7 __ Why: This addresses a potential undefined behavior issue where action_url_agent_unbound_ is returned without proper initialization. The suggestion correctly identifies that this member should be initialized in the constructor's member initializer list.	Medium
More