Date: Wed, 13 May 2026 22:10:25 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 295139] 'kldload vboxdrv.ko' fails with 'kernel module was loaded and unloaded it can't be loaded again' when the real problem is 'version mismatch' Message-ID: <bug-295139-227-gd3N2OBZZw@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-295139-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=295139 Jim Chen <jim.chen.1827@gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jim.chen.1827@gmail.com --- Comment #2 from Jim Chen <jim.chen.1827@gmail.com> --- Created attachment 270705 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=270705&action=edit Suggested patch I believe the bug is caused by a failure to verify that an already-loaded module (in this case "kernel") satisfies the version requirements. linker_load_module in /sys/kern/kern_loader.c misdiagnoses the failure to load as EEXISTS; regardless, linker_load_dependencies does not explicitly check the error type and (correctly) logs: > KLD vboxdrv.ko: depends on kernel - not available or version mismatch Afterwards, the incorrect error code is passed up to kldload(8), which prints the incorrect message to the terminal. Whenever a similar case is reached, the error ENOENT is raised, so in my attached patch, I have done the same. However, I think that ENOEXEC might be more semantically correct in this case. I'd appreciate any input, including whether or not it would be reasonable to edit other parts of the source accordingly. Thanks! -- You are receiving this mail because: You are the assignee for the bug.home | help
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