Next.js v15.2.2 Turbopack Dev server stuck in compiling + extreme CPU/memory usage

[schnubor]

Summary

Hi!

We're currently running smoothly with Next.js v15.2.0 and recently tried upgrading to 15.2.2 but noticed the Turbopack dev server stopped working. We didn't update any other of our packages. Here's what happens:

After running next dev --turbopack it's basically just stuck in compiling the page:

The Webpack warnings were also present in v15.2.0 (where it works) and are coming from Sentry afaik.

Meanwhile CPU and memory are through the roof:

Even after waiting 10min, nothing happened. It's just stuck in some sort of loop somehow. No error message or anything. Memory just keeps piling up and it still says "compiling..."

Here's what I already tried to resolve the issue:

• rm -rf node_modules + package-lock.json
• rm -rf .next
• fresh npm install
• Upgrading to latest 15.3.0-canary.6

All of those result in the same endless compile loop.

Now, unfortunately this happens in our private company repo which I cannot share publicly, but I'm happy to provide more info or even invite a Vercel/Nextjs/Turbopack engineer to the repo to debug this if needed.

Any hints on what is going on here?

Cheers!

Additional information

No response

Example

No response

[0xboga]

I'm experiencing the same issue. Dev server gets somehow stuck when using turbopack.

[MaxPuckeridge]

I also saw this issue on 15.2.2. Downgrading to 15.2.0 did fix the issue

[cptonypham]

I also 😭 CPU > 700%

[RudyMalh]

Same issue for me (compiling loop) and I find a fix :

• Install with 15.2.0 (like @MaxPuckeridge)
• npm run dev (load home page)
• npm i -g create-next-app (to upgrade to lastest)
• npm run dev (again and it's work !)

[lililud]

i believe there's a security vulnerability in 15.2.0 - is there any latest guidance here?

[devolasvegas]

I too am experiencing a similar issue after upgrading to 15.2.2. After running npm run dev NPM calls the script but nothing happens. Tried upgrading to the Canary version, reinstalling packages, etc.

[tayzarmein]

I am also experiencing the same issue after upgrading to v15.2.2, v15.2.3 or v15.2.4.
I was working fine at version v15.1.6.

[jscheel]

I'm getting a variant of this of 15.2.3. It's absolutely insane. Everything will run fine for a little bit, then, randomly, it wall just hang and peg all of my cpu cores indefinitely. Restarted machine, cleared cache, etc. Nothing helps.