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Fri, 3 Apr 2026 16:17:46 GMT (envelope-from bugzilla-noreply@freebsd.org) X-Authentication-Warning: kenobi.freebsd.org: www set sender to bugzilla-noreply@freebsd.org using -f From: bugzilla-noreply@freebsd.org To: virtualization@FreeBSD.org Subject: [Bug 290098] bhyve crashes when trying to boot or run a 9front VM and other OSes Date: Fri, 03 Apr 2026 16:17:44 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: bhyve X-Bugzilla-Version: 15.0-RELEASE X-Bugzilla-Keywords: crash X-Bugzilla-Severity: Affects Many People X-Bugzilla-Who: cm@chrismecca.com X-Bugzilla-Status: Open X-Bugzilla-Resolution: X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: virtualization@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc Message-ID: In-Reply-To: References: Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="UTF-8" X-Bugzilla-URL: https://bugs.freebsd.org/bugzilla/ Auto-Submitted: auto-generated List-Id: Discussion List-Archive: https://lists.freebsd.org/archives/freebsd-virtualization List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: freebsd-virtualization@freebsd.org Sender: owner-freebsd-virtualization@FreeBSD.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D290098 Chris Mecca changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |cm@chrismecca.com --- Comment #24 from Chris Mecca --- Confirmed working on FreeBSD 15.0-RELEASE-p5 (amd64) with the=20 patch attributed to Mark Peek reducing FB_SIZE from 32MB to 16MB in usr.sbin/bhyve/pci_fbuf.c. Tested with 9front-11498.c89461d55aa4.amd64 under bhyve with UEFI (edk2-bhyve) on an Intel Xeon E3 host (Hetzner EX44). Without patch: Assertion failed: (error =3D=3D 0), function=20 modify_bar_registration, file pci_emul.c, line 706. Abort trap. With patch: 9front boots successfully, VNC framebuffer works at 800x600, drawterm connects via cpu server. Patch: --- a/usr.sbin/bhyve/pci_fbuf.c +++ b/usr.sbin/bhyve/pci_fbuf.c -#define FB_SIZE (32*MB) +#define FB_SIZE (16*MB) -#define COLS_MAX 3840 -#define ROWS_MAX 2160 +#define COLS_MAX 1920 +#define ROWS_MAX 1200 The 32MB framebuffer window conflicts with available PCI address space=20 on certain hardware configurations. 16MB works great for 9front specificall= y. --=20 You are receiving this mail because: You are the assignee for the bug.=