[Bug 272416] Seldom crash happening with RTL8125
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Date: Tue, 22 Sep 2026 15:42:16 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=272416
wowi42 <wowi@wowi.io> changed:
What |Removed |Added
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CC| |wowi@wowi.io
--- Comment #17 from wowi42 <wowi@wowi.io> ---
Still reproducible. I hit this panic today on:
- FreeBSD 15.1-RELEASE (releng/15.1-n283562-96841ea08dcf) GENERIC amd64
- realtek-re-kmod-1102.01.1500068_1 (official binary package)
- 2x RTL8125, vendor=0x10ec device=0x8125 rev=0x05 (re0 WAN/PPPoE, re1 LAN)
The machine panics with a page fault in the RX path as soon as both
interfaces are configured and traffic flows:
Fatal trap 12: page fault while in kernel mode
fault virtual address = 0xe616
fault code = supervisor read data, page not present
current process = 0 (re0 taskq)
panic: page fault
#5 re_rxeof+0x3d4
#6 re_int_task_8125+0x11d
#7 taskqueue_run_locked+0x182
Workaround: disabling checksum offload on both interfaces
(-rxcsum -txcsum -rxcsum6 -txcsum6, per the pkg-message) — will report
back on stability.
Happy to help debug: I can provide /var/crash/core.txt.0 + vmcore, test
patches or debug builds, and the machine reproduces the crash reliably,
so any candidate fix can be validated quickly.
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