What version of Bun is running?
1.3.12
What platform is your computer?
Linux 6.19.9-zen1-1-zen (Arch)
What steps can reproduce the bug?
Setup
Next.js 16.2.3 app with App Router, React 19.2.5. A Server Component fetches unique product data from a backend API on every request:
// app/products/[brandSlug]/[slug]/page.tsx
import { cache } from 'react'
const getProduct = cache(async (brandSlug: string, slug: string) => {
const res = await fetch(`http://localhost:3001/products/${brandSlug}/${slug}`, {
cache: 'no-store',
})
return res.json() // ~5-50KB per product, each URL is unique
})
export default async function ProductPage({ params }) {
const { brandSlug, slug } = await params
const product = await getProduct(brandSlug, slug)
return <div>{product.title}</div>
}Example of load script
// load-test.ts — run with: bun run load-test.ts
const products = [/* 25,000 unique {brandSlug, slug} pairs from DB */]
for (let i = 0; i < products.length; i += 100) {
const batch = products.slice(i, i + 100)
await Promise.all(
batch.map(p =>
fetch(`http://localhost:3000/products/${p.brandSlug}/${p.slug}`).then(r => r.text())
)
)
}An error exists also on bun versions like 1.3.12 and 1.3.11
What is the expected behavior?
- Application should work without memory spikes using nextjs.
- Shouldn't crash by SIGTRAP from linux kernel.
- Memory usage grows from 5% from machine memory to 70%.
The same application under Node.js (next start) handles the identical load test without issues:
- Memory grows during request processing but V8 GC reclaims it between batches
- No SIGTRAP, no ECONNRESET, all 25,000 requests complete
- RSS stabilizes and does not grow unboundedly
What do you see instead?
Apllication crashed SIGTRAP from linux kernel.
Additional information
No response
What version of Bun is running?
1.3.12
What platform is your computer?
Linux 6.19.9-zen1-1-zen (Arch)
What steps can reproduce the bug?
Setup
Next.js 16.2.3 app with App Router, React 19.2.5. A Server Component fetches unique product data from a backend API on every request:
Example of load script
An error exists also on bun versions like 1.3.12 and 1.3.11
What is the expected behavior?
The same application under Node.js (
next start) handles the identical load test without issues:What do you see instead?
Apllication crashed SIGTRAP from linux kernel.
Additional information
No response