Date: Sun, 4 Jan 2026 09:58:53 -0600 From: "S. Ross Gohlke" <ross@bisd.ro> To: FreeBSD Current <freebsd-current@freebsd.org> Subject: device enc in custom kernel causes crash Message-ID: <117c6d2f-7e2c-4af8-9984-75cbae7867ca@bisd.ro>
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I built my custom kernel (based on MINIMAL) from CURRENT pkgbase package FreeBSD-src.snap20260103091340. Booting it causes a crash before entering single user mode with error message: panic: mtx_lock() of spin mutex (null) @ /usr/src/sys/netinet/igmp.c:627 After that, the keyboard is unresponsive, so I just power it off. On the subsequent boot, from a known-good kernel, the laptop powers itself off (sorry, I don't yet have a record of this error message). The next boot from the known-good kernel works as expected. I have a handful of options and devices enabled in the custom kernel, including enc(4). If I disable "device enc" in the kernel configuration, it boots normally. Here is a screenshot of the crash: https://kiz.li/b/bisd.ro/site/uv/20260104_065705.jpg Regards, Rosshome | help
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