Date: Mon, 09 Mar 2026 23:15:57 +0000 From: bugzilla-noreply@freebsd.org To: bugs@FreeBSD.org Subject: [Bug 293701] GENERIC-KASAN fails to boot, #GP exception Message-ID: <bug-293701-227@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=293701 Bug ID: 293701 Summary: GENERIC-KASAN fails to boot, #GP exception Product: Base System Version: 16.0-CURRENT Hardware: amd64 URL: https://github.com/freebsd/freebsd-src/pull/2069 OS: Any Status: New Severity: Affects Some People Priority: --- Component: kern Assignee: bugs@FreeBSD.org Reporter: kris@tranception.com Created attachment 268665 --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=268665&action=edit Screenshot of #GP exception raised by kernel during boot 16.0-RELEASE / GENERIC-KASAN kernel failed to boot on a Dell PowerEdge C6615 with an AMD EPYC 8224P CPU; UEFI BIOS caught a #GP exception (see attached screenshot). %RIP address from UEFI register dump pointed to kasan_memset() where %GS relative pointer (curthread->td_pflags2) was dereferenced. Investigation identified memset() call in wrmsr_early_safe_end() as culprit, replacing call to memset() with direct assignment as per patch in github pull request (see URL field in this bug report) resulted in a bootable GENERIC-KASAN kernel. -- You are receiving this mail because: You are the assignee for the bug.home | help
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