# Linux Patched For Silent User-Space Data Loss Bug That's Existed Since 2023

DevFeed: [Linux Patched For Silent User-Space Data Loss Bug That's Existed Since 2023](<https://devfeed.tech/articles/linux-patched-for-silent-user-space-data-loss-bug-that-s-existed-since-2023-17445.md>)

Original publisher: [Read original article](<https://www.phoronix.com/news/Linux-7.3-Fix-Silent-Data-Loss>)

Author: Michael Larabel

Published: 2026-09-14T10:13:45Z

Content type: news

Language: en

Sources: [Phoronix](<https://devfeed.tech/sources/phoronix.md>)

Topics: [Linux](<https://devfeed.tech/topics/linux.md>), [bug](<https://devfeed.tech/topics/bug.md>), [DataOps](<https://devfeed.tech/topics/dataops.md>), [Code](<https://devfeed.tech/topics/code.md>)

Tags: [bug](<https://devfeed.tech/tags/bug.md>), [c](<https://devfeed.tech/tags/c.md>), [code](<https://devfeed.tech/tags/code.md>), [data-analytics](<https://devfeed.tech/tags/data-analytics.md>), [desktop-linux](<https://devfeed.tech/tags/desktop-linux.md>), [kernel](<https://devfeed.tech/tags/kernel.md>), [linux](<https://devfeed.tech/tags/linux.md>), [linux-benchmarking](<https://devfeed.tech/tags/linux-benchmarking.md>), [linux-hardware-benchmarks](<https://devfeed.tech/tags/linux-hardware-benchmarks.md>), [linux-hardware-reviews](<https://devfeed.tech/tags/linux-hardware-reviews.md>), [linux-how-to](<https://devfeed.tech/tags/linux-how-to.md>), [linux-performance](<https://devfeed.tech/tags/linux-performance.md>), [linux-server-benchmarks](<https://devfeed.tech/tags/linux-server-benchmarks.md>), [open-source-graphics](<https://devfeed.tech/tags/open-source-graphics.md>), [phoronix](<https://devfeed.tech/tags/phoronix.md>), [phoronix-test-suite](<https://devfeed.tech/tags/phoronix-test-suite.md>), [production](<https://devfeed.tech/tags/production.md>), [release](<https://devfeed.tech/tags/release.md>), [ubuntu-benchmarks](<https://devfeed.tech/tags/ubuntu-benchmarks.md>), [ubuntu-hardware](<https://devfeed.tech/tags/ubuntu-hardware.md>)

## AI overview

A Linux kernel bug introduced in July 2023 can silently discard user-space writes when transparent hugepages are enabled, cgroup limits apply, and memory reclaim pressure is high. The issue has caused production data loss, including for users of the Polars data analytics library. A one-line fix was merged into the x86/urgent branch and marked for backporting to supported stable kernels.

## Source excerpt

Being merged after yesterday's Linux 7.3-rc3 release was an important fix for addressing a silent, user-space data loss bug that has existed in the kernel the past three years...