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Fri, 8 Aug 2025 16:35:23 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: bugs@FreeBSD.org Subject: [Bug 288607] MCA kernel panic on non-existent BANK 8 Date: Fri, 08 Aug 2025 16:35:23 +0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: Base System X-Bugzilla-Component: kern X-Bugzilla-Version: 14.3-RELEASE X-Bugzilla-Keywords: crash X-Bugzilla-Severity: Affects Only Me X-Bugzilla-Who: jhb@FreeBSD.org X-Bugzilla-Status: Closed X-Bugzilla-Resolution: Not A Bug X-Bugzilla-Priority: --- X-Bugzilla-Assigned-To: bugs@FreeBSD.org X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: cc resolution bug_status 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: Bug reports List-Archive: https://lists.freebsd.org/archives/freebsd-bugs List-Help: List-Post: List-Subscribe: List-Unsubscribe: Sender: owner-freebsd-bugs@FreeBSD.org MIME-Version: 1.0 https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D288607 John Baldwin changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |jhb@FreeBSD.org Resolution|--- |Not A Bug Status|New |Closed --- Comment #3 from John Baldwin --- The MCA bank doesn't mean "RAM" or "DIMM" bank. It indicates which registe= r is reporting the error (MCA uses different banks of registers to report differ= ent types of errors, and the mapping of errors to banks is vendor-specific and = also uarch-specific). So dmidecode isn't useful here, mcelog from ports (which should support AMD) is the only tool that can provide more details than is = in dmesg, but often it doesn't provide any more detail. The bits decoded in dmesg do indicate an uncorrected checksum error in your CPU's instruction-cache. That would generally be a hardware failure. Soft= ware can't really trigger ECC errors inside the CPU die. --=20 You are receiving this mail because: You are the assignee for the bug.=