https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=293307
Bug ID: 293307
Summary: if_rge detach cleanup for crash when error occurs
during attach
Product: Base System
Version: 14.3-STABLE
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
Created attachment 268203
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=268203&action=edit
Updated patch for crash
As requested in Bug 292879 here's an updated patch for if_rge to avoid crashing
in detach if an error occurs while attaching. The additional changes are to
avoid calling bus_dmamap_unload if the memory hasn't been allocated and to
postpone zeroing q->q_tx / q->q_rx until after the related buffers have been
freed.
The code to handle an all zeros eaddr is included just because (obviously
unrelated to the panic).
Tested on a FriendlyElec NanoPC-T6 LTS RK3588 where at the moment rge reset is
falling during the attach probably due to recent platform code changes (I'm in
the process of bringing up FreeBSD on this platform).
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