Bug ID 2279229: Kernel Panic Occurs While Accessing page_private Data During Writeback

Last Modified: Jun 25, 2026

Affected Product(s):
F5OS F5OS, F5OS-A, F5OS-C(all modules)

Known Affected Versions:
F5OS-A 1.8.0, F5OS-A 1.8.1, F5OS-A 1.8.2, F5OS-A 1.8.3, F5OS-A 1.8.4

Opened: Apr 17, 2026

Severity: 2-Critical

Symptoms

System crashes with kernel panic during filesystem writeback

Impact

Kernel panic/system crash

Conditions

Occurs when hardware or drivers (e.g., RDMA/DMA) write directly to file-backed pages pinned with get_user_pages() (GUP), bypassing normal filesystem write paths, so the filesystem is unaware of the changes

Workaround

None

Fix Information

None

Behavior Change

Guides & references

K10134038: F5 Bug Tracker Filter Names and Tips