Memory leaks after updating from 7.37.1 to 7.37.2

[jdpst]

Is there an existing issue for this?

• I have checked for existing issues https://github.com/getsentry/sentry-javascript/issues
• I have reviewed the documentation https://docs.sentry.io/
• I am using the latest SDK release https://github.com/getsentry/sentry-javascript/releases

How do you use Sentry?

Sentry Saas (sentry.io)

Which SDK are you using? If you use the CDN bundles, please specify the exact bundle (e.g. bundle.tracing.min.js) in your SDK setup.

@sentry/nextjs

SDK Version

7.37.2

Framework Version

NextJS 13.1.5

Link to Sentry event

No response

SDK Setup

Sentry.init({
  dsn: DSN,
  environment: ENVIRONMENT,
  release: RELEASE,
  tracesSampler: (samplingContext) => !!samplingContext.parentSampled || TRACES_SAMPLE_RATE,
  integrations: [
    // new Sentry.Replay({sessionSampleRate: 0, errorSampleRate: 1, maskAllInputs: true, useCompression: false}), // tried this
    // new Sentry.Replay({sessionSampleRate: 0, errorSampleRate: 1, maskAllInputs: true}), // then tried this
    // then tried without Replay
    new Sentry.BrowserTracing({tracingOrigins: ["redacted"]}),
    new Integrations.CaptureConsole({levels: ["error"]}),
    new Integrations.ExtraErrorData({depth: 10}),
  ],
});

Steps to Reproduce

1. Update sentry packages from 7.37.1 to 7.37.2 and disabled replay compression
2. Observe unexpected changes server memory utilization and server crashes
3. Re-enable replay compression
4. Observe memory changes still present after re-enabling replay compression (i.e. establish that compression enabled/disabled is not the cause)
5. Remove replay's completely
6. Observe memory changes still present without replays (i.e. establish that replays are not the cause)

Expected Result

No changes to memory utilization, no server crashes

Actual Result

After updating the packages, memory utilisation changed very dramatically with huge variations. On several occasions this brought down the instances (503s reported by users). Consistent across several clients, e.g.

[lforst]

Yo thanks for writing in, this seems rather serious. Right now I can't think of anything obvious that we released that might cause this. Can you share your sentry.server.config.js?

Also would you mind sharing a $ git diff of your lockfile in the commit that caused this spike in your app? That would help us potentially isolate the problem.

[jdpst]

@lforst It's certainly not ideal. 😄 We've downgraded to 7.37.1 for now. For some additional context, we were upgrading because (1) Sentry is always reminding us to and (2) our Replay integration had recently stopped working, with errors like the one below that removing the compression fixed. We've been using Sentry, across our clients and backend for error monitoring and end-to-end tracing, for about a year without issues (well, prior to this one!).

---

sentry.server.config.js & sentry.edge.config.js

Sentry.init({
  dsn: DSN,
  environment: ENVIRONMENT,
  release: RELEASE,
  tracesSampler: () => false,
  autoSessionTracking: false,
});

next.config.js

const nextConfig = {
      // partially redacted, but includes
      pageExtensions: ["tsx"],
      poweredByHeader: false,
      optimizeFonts: false,
      eslint: {ignoreDuringBuilds: true},

      // build options
      output: "standalone",
      experimental: {outputFileTracingRoot: join(dirname, "../../")},
      transpilePackages: internalPackages(dependencies),
      productionBrowserSourceMaps: true,
};

module.exports = withSentryConfig(
  {
    ...nextConfig,
    sentry: {
      autoInstrumentAppDirectory: false,
      autoInstrumentMiddleware: false,
      autoInstrumentServerFunctions: false,
      hideSourceMaps: true,
      widenClientFileUpload: true,
      tunnelRoute: "/api/sentry",
    },
  },
  {
    org: "redacted",
    project: "redacted",
    authToken: process.env.SENTRY_AUTH_TOKEN,
    release: process.env.NEXT_PUBLIC_GITHUB_SHA,
    dryRun: process.env.NEXT_PUBLIC_TARGET_ENV !== "production" && process.env.NEXT_PUBLIC_TARGET_ENV !== "staging",
    silent: true,
  },
);

git diff

diff --git a/package-lock.json b/package-lock.json
index fd48488e4..fda0e0fe3 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -29,8 +29,8 @@
-        "@sentry/integrations": "^7.37.1",
-        "@sentry/nextjs": "^7.37.1",
-        "@sentry/tracing": "^7.37.1",
+        "@sentry/integrations": "^7.37.2",
+        "@sentry/nextjs": "^7.37.2",
+        "@sentry/tracing": "^7.37.2",
@@ -94,8 +94,8 @@
-        "@sentry/integrations": "^7.37.1",
-        "@sentry/nextjs": "^7.37.1",
-        "@sentry/tracing": "^7.37.1",
+        "@sentry/integrations": "^7.37.2",
+        "@sentry/nextjs": "^7.37.2",
+        "@sentry/tracing": "^7.37.2",
@@ -180,8 +180,8 @@
-        "@sentry/integrations": "^7.37.1",
-        "@sentry/nextjs": "^7.37.1",
-        "@sentry/tracing": "^7.37.1",
+        "@sentry/integrations": "^7.37.2",
+        "@sentry/nextjs": "^7.37.2",
+        "@sentry/tracing": "^7.37.2",
@@ -16540,14 +16540,14 @@
       "link": true
     },
     "node_modules/@sentry/browser": {
-      "version": "7.37.1",
-      "resolved": "https://registry.npmjs.org/@sentry/browser/-/browser-7.37.1.tgz",
-      "integrity": "sha512-MfVbKzEVHKVH6ZyMCKLtPXvMtRCvxqQzrnK735sYW6EyMpcMYhukBU0pq7ws1E/KaCZjAJi1wDx2nqf2yPIVdQ==",
-      "dependencies": {
-        "@sentry/core": "7.37.1",
-        "@sentry/replay": "7.37.1",
-        "@sentry/types": "7.37.1",
-        "@sentry/utils": "7.37.1",
+      "version": "7.37.2",
+      "resolved": "https://registry.npmjs.org/@sentry/browser/-/browser-7.37.2.tgz",
+      "integrity": "sha512-UvKfpx6+BUdV+rGAXqDBznagfz44Ut+x2h/i0OZPNCEpXaH9KAQOlv06I66861aXiucWFRb1lAMrN4+cE9aJIg==",
+      "dependencies": {
+        "@sentry/core": "7.37.2",
+        "@sentry/replay": "7.37.2",
+        "@sentry/types": "7.37.2",
+        "@sentry/utils": "7.37.2",
         "tslib": "^1.9.3"
       },
       "engines": {
@@ -16581,12 +16581,12 @@
       }
     },
     "node_modules/@sentry/core": {
-      "version": "7.37.1",
-      "resolved": "https://registry.npmjs.org/@sentry/core/-/core-7.37.1.tgz",
-      "integrity": "sha512-eS5hoFDjAOl7POZg6K77J0oiypiqR1782oVSB49UkjK+D8tCZzZ5PxPMv0b/O0310p7x4oZ3WGRJaWEN3vY4KQ==",
+      "version": "7.37.2",
+      "resolved": "https://registry.npmjs.org/@sentry/core/-/core-7.37.2.tgz",
+      "integrity": "sha512-LjofMDSTyVeBErl9N7TTqlyEVuW1g6U4iuJtdZ75JohnvVxzWdpZfWfddwQ6h7nGWfe9dNg0fGs1wxKtMhY+MA==",
       "dependencies": {
-        "@sentry/types": "7.37.1",
-        "@sentry/utils": "7.37.1",
+        "@sentry/types": "7.37.2",
+        "@sentry/utils": "7.37.2",
         "tslib": "^1.9.3"
       },
       "engines": {
@@ -16599,12 +16599,12 @@
       "integrity": "sha512-Xni35NKzjgMrwevysHTCArtLDpPvye8zV/0E4EyYn43P7/7qvQwPh9BGkHewbMulVntbigmcT7rdX3BNo9wRJg=="
     },
     "node_modules/@sentry/integrations": {
-      "version": "7.37.1",
-      "resolved": "https://registry.npmjs.org/@sentry/integrations/-/integrations-7.37.1.tgz",
-      "integrity": "sha512-/7VZXw7/DxZPsGNEaU/gcKRNPtmK75mz9oM71C5UbRDDEdFSEeVq2jG+tOq2lIsd2VQlsAmN3DG5yqiGA9C4eQ==",
+      "version": "7.37.2",
+      "resolved": "https://registry.npmjs.org/@sentry/integrations/-/integrations-7.37.2.tgz",
+      "integrity": "sha512-kqfXo2hRLo3y0vM9ZcjbrB3grOYfPuKpSHN8MZVx3MHTbAUkjHVwjPf5dfi5a0nMvMYAjg2v/Olt8OGayBgjmg==",
       "dependencies": {
-        "@sentry/types": "7.37.1",
-        "@sentry/utils": "7.37.1",
+        "@sentry/types": "7.37.2",
+        "@sentry/utils": "7.37.2",
         "localforage": "^1.8.1",
         "tslib": "^1.9.3"
       },
@@ -16618,18 +16618,18 @@
       "integrity": "sha512-Xni35NKzjgMrwevysHTCArtLDpPvye8zV/0E4EyYn43P7/7qvQwPh9BGkHewbMulVntbigmcT7rdX3BNo9wRJg=="
     },
     "node_modules/@sentry/nextjs": {
-      "version": "7.37.1",
-      "resolved": "https://registry.npmjs.org/@sentry/nextjs/-/nextjs-7.37.1.tgz",
-      "integrity": "sha512-PNx1Rqx8a4CNd4AOkpECn45P2wfAZPtasyc+j2MbnHroEOFQqj6COLjWe6Aus8dHyFyXXGlKEMELbehlGhrwvg==",
+      "version": "7.37.2",
+      "resolved": "https://registry.npmjs.org/@sentry/nextjs/-/nextjs-7.37.2.tgz",
+      "integrity": "sha512-Qiop5uOKMEbMtpyBEe5wNy2L4GHsixc2FKoXKFJJ790xA+KI9CteLOZaeSVt/YXFung0DYyOc1V9r/W0I1JEcw==",
       "dependencies": {
         "@rollup/plugin-commonjs": "24.0.0",
-        "@sentry/core": "7.37.1",
-        "@sentry/integrations": "7.37.1",
-        "@sentry/node": "7.37.1",
-        "@sentry/react": "7.37.1",
-        "@sentry/tracing": "7.37.1",
-        "@sentry/types": "7.37.1",
-        "@sentry/utils": "7.37.1",
+        "@sentry/core": "7.37.2",
+        "@sentry/integrations": "7.37.2",
+        "@sentry/node": "7.37.2",
+        "@sentry/react": "7.37.2",
+        "@sentry/tracing": "7.37.2",
+        "@sentry/types": "7.37.2",
+        "@sentry/utils": "7.37.2",
         "@sentry/webpack-plugin": "1.20.0",
         "chalk": "3.0.0",
         "rollup": "2.78.0",
@@ -16716,13 +16716,13 @@
       "integrity": "sha512-Xni35NKzjgMrwevysHTCArtLDpPvye8zV/0E4EyYn43P7/7qvQwPh9BGkHewbMulVntbigmcT7rdX3BNo9wRJg=="
     },
     "node_modules/@sentry/node": {
-      "version": "7.37.1",
-      "resolved": "https://registry.npmjs.org/@sentry/node/-/node-7.37.1.tgz",
-      "integrity": "sha512-nGerngIo5JwinJgl7m0SaL/xI+YRBlhb53gbkuLSAAcnoitBFzbp7LjywsqYFTWuWDIyk7O2t124GNxtolBAgA==",
+      "version": "7.37.2",
+      "resolved": "https://registry.npmjs.org/@sentry/node/-/node-7.37.2.tgz",
+      "integrity": "sha512-aeJQ4oU3vF9zks8S/fvoLPVVhofmTjyMhZZIpSQWtfFqWxrXQsrqNlNUZZdXoqAUPNjA4QAzzOoXHhpUsa3Nxw==",
       "dependencies": {
-        "@sentry/core": "7.37.1",
-        "@sentry/types": "7.37.1",
-        "@sentry/utils": "7.37.1",
+        "@sentry/core": "7.37.2",
+        "@sentry/types": "7.37.2",
+        "@sentry/utils": "7.37.2",
         "cookie": "^0.4.1",
         "https-proxy-agent": "^5.0.0",
         "lru_map": "^0.3.3",
@@ -16738,13 +16738,13 @@
       "integrity": "sha512-Xni35NKzjgMrwevysHTCArtLDpPvye8zV/0E4EyYn43P7/7qvQwPh9BGkHewbMulVntbigmcT7rdX3BNo9wRJg=="
     },
     "node_modules/@sentry/react": {
-      "version": "7.37.1",
-      "resolved": "https://registry.npmjs.org/@sentry/react/-/react-7.37.1.tgz",
-      "integrity": "sha512-W/jCvNvnc4qug1ABq+SfbQHVuvCvogoXdo+v5nxw9UdyfTzdvjXW5949kDpombWMEyCVuw5AeslNhwNGlD3iiQ==",
+      "version": "7.37.2",
+      "resolved": "https://registry.npmjs.org/@sentry/react/-/react-7.37.2.tgz",
+      "integrity": "sha512-e5NFQAwHSGVyMUGYjvYXLI/QECkXkZ2BNUo+OHr5mAYqcIyGSA38tX7RJetrhonVjjpJp/ZVzlOyxQkpnBfBLw==",
       "dependencies": {
-        "@sentry/browser": "7.37.1",
-        "@sentry/types": "7.37.1",
-        "@sentry/utils": "7.37.1",
+        "@sentry/browser": "7.37.2",
+        "@sentry/types": "7.37.2",
+        "@sentry/utils": "7.37.2",
         "hoist-non-react-statics": "^3.3.2",
         "tslib": "^1.9.3"
       },
@@ -16761,26 +16761,26 @@
       "integrity": "sha512-Xni35NKzjgMrwevysHTCArtLDpPvye8zV/0E4EyYn43P7/7qvQwPh9BGkHewbMulVntbigmcT7rdX3BNo9wRJg=="
     },
     "node_modules/@sentry/replay": {
-      "version": "7.37.1",
-      "resolved": "https://registry.npmjs.org/@sentry/replay/-/replay-7.37.1.tgz",
-      "integrity": "sha512-3sHOE/oPirdvJbOn0IA/wpds12Sm2WaEtiAeC0+5Gg5mxQzFBLRrsA1Mz/ifzPGwr+ETn3sCyPCnd9b3PWaWMQ==",
+      "version": "7.37.2",
+      "resolved": "https://registry.npmjs.org/@sentry/replay/-/replay-7.37.2.tgz",
+      "integrity": "sha512-y8Gfc7EGfGU4eVae5HAtch2YgkiTzNPi16dcqPX9jtIHDwiurGqWcaOgs5HoGJm45eMfl6LvcE7MPbwqcDkPIA==",
       "dependencies": {
-        "@sentry/core": "7.37.1",
-        "@sentry/types": "7.37.1",
-        "@sentry/utils": "7.37.1"
+        "@sentry/core": "7.37.2",
+        "@sentry/types": "7.37.2",
+        "@sentry/utils": "7.37.2"
       },
       "engines": {
         "node": ">=12"
       }
     },
     "node_modules/@sentry/tracing": {
-      "version": "7.37.1",
-      "resolved": "https://registry.npmjs.org/@sentry/tracing/-/tracing-7.37.1.tgz",
-      "integrity": "sha512-3mQG2XtMCGqDkgfzhKpRJAIfRaokNAOF8WafgAmFmZQwEDsRAFjZ3pLoO+KiBUeQE5E5et7HyWBOl9rqHCkWnQ==",
+      "version": "7.37.2",
+      "resolved": "https://registry.npmjs.org/@sentry/tracing/-/tracing-7.37.2.tgz",
+      "integrity": "sha512-XBVvxbV5TADq2rHg/kJqGqDfOP8n2myMUxMMpfHMb38NrxkxQwXy+gDe41bA8FJKA2k7Y3Wkn8ZC/PelQ8c+ag==",
       "dependencies": {
-        "@sentry/core": "7.37.1",
-        "@sentry/types": "7.37.1",
-        "@sentry/utils": "7.37.1",
+        "@sentry/core": "7.37.2",
+        "@sentry/types": "7.37.2",
+        "@sentry/utils": "7.37.2",
         "tslib": "^1.9.3"
       },
       "engines": {
@@ -16793,19 +16793,19 @@
       "integrity": "sha512-Xni35NKzjgMrwevysHTCArtLDpPvye8zV/0E4EyYn43P7/7qvQwPh9BGkHewbMulVntbigmcT7rdX3BNo9wRJg=="
     },
     "node_modules/@sentry/types": {
-      "version": "7.37.1",
-      "resolved": "https://registry.npmjs.org/@sentry/types/-/types-7.37.1.tgz",
-      "integrity": "sha512-c2HWyWSgVA0V4+DSW2qVb0yjftrb1X/q2CzCom+ayjGHO72qyWC+9Tc+7ZfotU1mapRjqUWBgkXkbGmao8N8Ug==",
+      "version": "7.37.2",
+      "resolved": "https://registry.npmjs.org/@sentry/types/-/types-7.37.2.tgz",
+      "integrity": "sha512-SxKQOCX94ZaQM4C2ysNjHdJsjYapu/NYZCz1cnPyCdDvYfhwiVge1uq6ZHiQ/ARfxAAOmc3R4Mh3VvEz7WUOdw==",
       "engines": {
         "node": ">=8"
       }
     },
     "node_modules/@sentry/utils": {
-      "version": "7.37.1",
-      "resolved": "https://registry.npmjs.org/@sentry/utils/-/utils-7.37.1.tgz",
-      "integrity": "sha512-/4mJOyDsfysx+5TXyJgSI+Ihw2/0EVJbrHjCyXPDXW5ADwbtU8VdBZ0unOmF0hk4QfftqwM9cyEu3BN4iBJsEA==",
+      "version": "7.37.2",
+      "resolved": "https://registry.npmjs.org/@sentry/utils/-/utils-7.37.2.tgz",
+      "integrity": "sha512-5irN1nN/mtdOoWwsJiwBK0gPgNMkciUubEMbCaaXqJaGyGz8+yfDvXj7L+xGYiU57z+7+QkkSKxKEZ/IcBpjVQ==",
       "dependencies": {
-        "@sentry/types": "7.37.1",
+        "@sentry/types": "7.37.2",
         "tslib": "^1.9.3"
       },
       "engines": {
@@ -53675,14 +53675,14 @@
       }
     },
     "@sentry/browser": {
-      "version": "7.37.1",
-      "resolved": "https://registry.npmjs.org/@sentry/browser/-/browser-7.37.1.tgz",
-      "integrity": "sha512-MfVbKzEVHKVH6ZyMCKLtPXvMtRCvxqQzrnK735sYW6EyMpcMYhukBU0pq7ws1E/KaCZjAJi1wDx2nqf2yPIVdQ==",
-      "requires": {
-        "@sentry/core": "7.37.1",
-        "@sentry/replay": "7.37.1",
-        "@sentry/types": "7.37.1",
-        "@sentry/utils": "7.37.1",
+      "version": "7.37.2",
+      "resolved": "https://registry.npmjs.org/@sentry/browser/-/browser-7.37.2.tgz",
+      "integrity": "sha512-UvKfpx6+BUdV+rGAXqDBznagfz44Ut+x2h/i0OZPNCEpXaH9KAQOlv06I66861aXiucWFRb1lAMrN4+cE9aJIg==",
+      "requires": {
+        "@sentry/core": "7.37.2",
+        "@sentry/replay": "7.37.2",
+        "@sentry/types": "7.37.2",
+        "@sentry/utils": "7.37.2",
         "tslib": "^1.9.3"
       },
       "dependencies": {
@@ -53708,12 +53708,12 @@
       }
     },
     "@sentry/core": {
-      "version": "7.37.1",
-      "resolved": "https://registry.npmjs.org/@sentry/core/-/core-7.37.1.tgz",
-      "integrity": "sha512-eS5hoFDjAOl7POZg6K77J0oiypiqR1782oVSB49UkjK+D8tCZzZ5PxPMv0b/O0310p7x4oZ3WGRJaWEN3vY4KQ==",
+      "version": "7.37.2",
+      "resolved": "https://registry.npmjs.org/@sentry/core/-/core-7.37.2.tgz",
+      "integrity": "sha512-LjofMDSTyVeBErl9N7TTqlyEVuW1g6U4iuJtdZ75JohnvVxzWdpZfWfddwQ6h7nGWfe9dNg0fGs1wxKtMhY+MA==",
       "requires": {
-        "@sentry/types": "7.37.1",
-        "@sentry/utils": "7.37.1",
+        "@sentry/types": "7.37.2",
+        "@sentry/utils": "7.37.2",
         "tslib": "^1.9.3"
       },
       "dependencies": {
@@ -53725,12 +53725,12 @@
       }
     },
     "@sentry/integrations": {
-      "version": "7.37.1",
-      "resolved": "https://registry.npmjs.org/@sentry/integrations/-/integrations-7.37.1.tgz",
-      "integrity": "sha512-/7VZXw7/DxZPsGNEaU/gcKRNPtmK75mz9oM71C5UbRDDEdFSEeVq2jG+tOq2lIsd2VQlsAmN3DG5yqiGA9C4eQ==",
+      "version": "7.37.2",
+      "resolved": "https://registry.npmjs.org/@sentry/integrations/-/integrations-7.37.2.tgz",
+      "integrity": "sha512-kqfXo2hRLo3y0vM9ZcjbrB3grOYfPuKpSHN8MZVx3MHTbAUkjHVwjPf5dfi5a0nMvMYAjg2v/Olt8OGayBgjmg==",
       "requires": {
-        "@sentry/types": "7.37.1",
-        "@sentry/utils": "7.37.1",
+        "@sentry/types": "7.37.2",
+        "@sentry/utils": "7.37.2",
         "localforage": "^1.8.1",
         "tslib": "^1.9.3"
       },
@@ -53743,18 +53743,18 @@
       }
     },
     "@sentry/nextjs": {
-      "version": "7.37.1",
-      "resolved": "https://registry.npmjs.org/@sentry/nextjs/-/nextjs-7.37.1.tgz",
-      "integrity": "sha512-PNx1Rqx8a4CNd4AOkpECn45P2wfAZPtasyc+j2MbnHroEOFQqj6COLjWe6Aus8dHyFyXXGlKEMELbehlGhrwvg==",
+      "version": "7.37.2",
+      "resolved": "https://registry.npmjs.org/@sentry/nextjs/-/nextjs-7.37.2.tgz",
+      "integrity": "sha512-Qiop5uOKMEbMtpyBEe5wNy2L4GHsixc2FKoXKFJJ790xA+KI9CteLOZaeSVt/YXFung0DYyOc1V9r/W0I1JEcw==",
       "requires": {
         "@rollup/plugin-commonjs": "24.0.0",
-        "@sentry/core": "7.37.1",
-        "@sentry/integrations": "7.37.1",
-        "@sentry/node": "7.37.1",
-        "@sentry/react": "7.37.1",
-        "@sentry/tracing": "7.37.1",
-        "@sentry/types": "7.37.1",
-        "@sentry/utils": "7.37.1",
+        "@sentry/core": "7.37.2",
+        "@sentry/integrations": "7.37.2",
+        "@sentry/node": "7.37.2",
+        "@sentry/react": "7.37.2",
+        "@sentry/tracing": "7.37.2",
+        "@sentry/types": "7.37.2",
+        "@sentry/utils": "7.37.2",
         "@sentry/webpack-plugin": "1.20.0",
         "chalk": "3.0.0",
         "rollup": "2.78.0",
@@ -53812,13 +53812,13 @@
       }
     },
     "@sentry/node": {
-      "version": "7.37.1",
-      "resolved": "https://registry.npmjs.org/@sentry/node/-/node-7.37.1.tgz",
-      "integrity": "sha512-nGerngIo5JwinJgl7m0SaL/xI+YRBlhb53gbkuLSAAcnoitBFzbp7LjywsqYFTWuWDIyk7O2t124GNxtolBAgA==",
+      "version": "7.37.2",
+      "resolved": "https://registry.npmjs.org/@sentry/node/-/node-7.37.2.tgz",
+      "integrity": "sha512-aeJQ4oU3vF9zks8S/fvoLPVVhofmTjyMhZZIpSQWtfFqWxrXQsrqNlNUZZdXoqAUPNjA4QAzzOoXHhpUsa3Nxw==",
       "requires": {
-        "@sentry/core": "7.37.1",
-        "@sentry/types": "7.37.1",
-        "@sentry/utils": "7.37.1",
+        "@sentry/core": "7.37.2",
+        "@sentry/types": "7.37.2",
+        "@sentry/utils": "7.37.2",
         "cookie": "^0.4.1",
         "https-proxy-agent": "^5.0.0",
         "lru_map": "^0.3.3",
@@ -53833,13 +53833,13 @@
       }
     },
     "@sentry/react": {
-      "version": "7.37.1",
-      "resolved": "https://registry.npmjs.org/@sentry/react/-/react-7.37.1.tgz",
-      "integrity": "sha512-W/jCvNvnc4qug1ABq+SfbQHVuvCvogoXdo+v5nxw9UdyfTzdvjXW5949kDpombWMEyCVuw5AeslNhwNGlD3iiQ==",
+      "version": "7.37.2",
+      "resolved": "https://registry.npmjs.org/@sentry/react/-/react-7.37.2.tgz",
+      "integrity": "sha512-e5NFQAwHSGVyMUGYjvYXLI/QECkXkZ2BNUo+OHr5mAYqcIyGSA38tX7RJetrhonVjjpJp/ZVzlOyxQkpnBfBLw==",
       "requires": {
-        "@sentry/browser": "7.37.1",
-        "@sentry/types": "7.37.1",
-        "@sentry/utils": "7.37.1",
+        "@sentry/browser": "7.37.2",
+        "@sentry/types": "7.37.2",
+        "@sentry/utils": "7.37.2",
         "hoist-non-react-statics": "^3.3.2",
         "tslib": "^1.9.3"
       },
@@ -53852,23 +53852,23 @@
       }
     },
     "@sentry/replay": {
-      "version": "7.37.1",
-      "resolved": "https://registry.npmjs.org/@sentry/replay/-/replay-7.37.1.tgz",
-      "integrity": "sha512-3sHOE/oPirdvJbOn0IA/wpds12Sm2WaEtiAeC0+5Gg5mxQzFBLRrsA1Mz/ifzPGwr+ETn3sCyPCnd9b3PWaWMQ==",
+      "version": "7.37.2",
+      "resolved": "https://registry.npmjs.org/@sentry/replay/-/replay-7.37.2.tgz",
+      "integrity": "sha512-y8Gfc7EGfGU4eVae5HAtch2YgkiTzNPi16dcqPX9jtIHDwiurGqWcaOgs5HoGJm45eMfl6LvcE7MPbwqcDkPIA==",
       "requires": {
-        "@sentry/core": "7.37.1",
-        "@sentry/types": "7.37.1",
-        "@sentry/utils": "7.37.1"
+        "@sentry/core": "7.37.2",
+        "@sentry/types": "7.37.2",
+        "@sentry/utils": "7.37.2"
       }
     },
     "@sentry/tracing": {
-      "version": "7.37.1",
-      "resolved": "https://registry.npmjs.org/@sentry/tracing/-/tracing-7.37.1.tgz",
-      "integrity": "sha512-3mQG2XtMCGqDkgfzhKpRJAIfRaokNAOF8WafgAmFmZQwEDsRAFjZ3pLoO+KiBUeQE5E5et7HyWBOl9rqHCkWnQ==",
+      "version": "7.37.2",
+      "resolved": "https://registry.npmjs.org/@sentry/tracing/-/tracing-7.37.2.tgz",
+      "integrity": "sha512-XBVvxbV5TADq2rHg/kJqGqDfOP8n2myMUxMMpfHMb38NrxkxQwXy+gDe41bA8FJKA2k7Y3Wkn8ZC/PelQ8c+ag==",
       "requires": {
-        "@sentry/core": "7.37.1",
-        "@sentry/types": "7.37.1",
-        "@sentry/utils": "7.37.1",
+        "@sentry/core": "7.37.2",
+        "@sentry/types": "7.37.2",
+        "@sentry/utils": "7.37.2",
         "tslib": "^1.9.3"
       },
       "dependencies": {
@@ -53880,16 +53880,16 @@
       }
     },
     "@sentry/types": {
-      "version": "7.37.1",
-      "resolved": "https://registry.npmjs.org/@sentry/types/-/types-7.37.1.tgz",
-      "integrity": "sha512-c2HWyWSgVA0V4+DSW2qVb0yjftrb1X/q2CzCom+ayjGHO72qyWC+9Tc+7ZfotU1mapRjqUWBgkXkbGmao8N8Ug=="
+      "version": "7.37.2",
+      "resolved": "https://registry.npmjs.org/@sentry/types/-/types-7.37.2.tgz",
+      "integrity": "sha512-SxKQOCX94ZaQM4C2ysNjHdJsjYapu/NYZCz1cnPyCdDvYfhwiVge1uq6ZHiQ/ARfxAAOmc3R4Mh3VvEz7WUOdw=="
     },
     "@sentry/utils": {
-      "version": "7.37.1",
-      "resolved": "https://registry.npmjs.org/@sentry/utils/-/utils-7.37.1.tgz",
-      "integrity": "sha512-/4mJOyDsfysx+5TXyJgSI+Ihw2/0EVJbrHjCyXPDXW5ADwbtU8VdBZ0unOmF0hk4QfftqwM9cyEu3BN4iBJsEA==",
+      "version": "7.37.2",
+      "resolved": "https://registry.npmjs.org/@sentry/utils/-/utils-7.37.2.tgz",
+      "integrity": "sha512-5irN1nN/mtdOoWwsJiwBK0gPgNMkciUubEMbCaaXqJaGyGz8+yfDvXj7L+xGYiU57z+7+QkkSKxKEZ/IcBpjVQ==",
       "requires": {
-        "@sentry/types": "7.37.1",
+        "@sentry/types": "7.37.2",
         "tslib": "^1.9.3"
       },

[lforst]

My suspicion, for now, would be that the cause is related to the tunnelRoute setting in next.config.js. But I am really not sure...

Do you know for what kind of event the missing newline after header or payload error you get is showing up? Error, Transaction, or Replay?

[jdpst]

My suspicion, for now, would be that the cause is related to the tunnelRoute setting in next.config.js. But I am really not sure...

Do you know for what kind of event the missing newline after header or payload error you get is showing up? Error, Transaction, or Replay?

The error was for Replay events only. We were able to fix those errors by setting useCompression: false in the Replay settings.

[lforst]

Can you 100% confirm the only change you reverted was going from 7.37.1 to 7.37.2? The reason I am asking is because we didn't do any serverside changes: 7.37.1...7.37.2

[jdpst]

@lforst The only other changes made in that commit were to replace the _error pages with the updated version in the Sentry docs (i.e. we replaced the old boilerplate with the new boilerplate, which is as shown in the Sentry docs).

As it so happens, dropping back to the prior version did not fix our issues. It looked like it did, but was a false positive. Ultimately, we saw erratic behaviour until finally reverting the changes to the _error pages. I'd initially assumed these changes couldn't be the culprit because they came straight from the docs.

I haven't looked to see if there's a ticket for the _error page issue, nor do I really understand what's actually happening there. I don't know why the changes were causing issues at all–we are using a compatible version of Sentry and NextJS (the latest version of both at the time).

FWIW, we regularly see these errors, which are handled explicitly in the old boilerplate linked above but not in the new one. I have a suspicion that these errors were causing the new _error page to blow up on the server, but I have no proof.

Let me know if you have any thoughts on that, or whether to convert this or to create a new ticket and close this one.

[lforst]

Let me know if you have any thoughts on that, or whether to convert this or to create a new ticket and close this one.

All good. I'll have a look at this. Thanks for the update!

[lforst]

We have a few suspicions:

• Does your _error.js look exactly like in the docs you shared?
• Do you somewhere keep references to request objects in your app?
• Do you somewhere keep references to Sentry objects in your app? (Scope objects, Transaction objects, Span objects)

[jdpst]

We have a few suspicions:

• Does your _error.js look exactly like in the docs you shared? Yes, exactly as in the links. We've now reverted to what I am calling the "old boilerplate", which iirc used to be in the Sentry docs as well.
• Do you somewhere keep references to request objects in your app? No
• Do you somewhere keep references to Sentry objects in your app? (Scope objects, Transaction objects, Span objects) No

The only code we have that interacts explicitly with Sentry constructs is the below function to set a new idle transaction if one doesn't exist. We use this to instrument requests to our API.

const startTransaction = () => {
  if (!Tracing.getActiveTransaction()) {
    Tracing.startIdleTransaction(Sentry.getCurrentHub(), {name: window.location.pathname, op: "manual"}, 0, 0, true);
  }
};

All other usage is limited to captureException(...)

[lforst]

Some more thoughts on this:

• I am a little bit skeptical since this is the first report we received on memory usage even though the new _error boilerplate has been out for a long time.
• The memory usage pattern looks very sketchy. It's not a gradual build-up but rather a sudden burst. I'd love to see one of these spikes zoomed in a bit.

We might be running into some weird edge case here. Maybe in some event we trigger an intensive amount of computation? Could it be normalization of events?

Are you certain that your Sentry init really just consists of this on the server and edge routes?:

Sentry.init({
  dsn: DSN,
  environment: ENVIRONMENT,
  release: RELEASE,
  tracesSampler: () => false,
  autoSessionTracking: false,
});