Date: Mon, 13 Jun 2016 03:12:52 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 210244] Logic bug in EFI GetMemoryMap usage Message-ID: <bug-210244-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D210244 Bug ID: 210244 Summary: Logic bug in EFI GetMemoryMap usage Product: Base System Version: 10.3-RELEASE Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: bruce.cran@gmail.com There are a couple of places in the sys/boot/efi tree that calls `BS->GetMemoryMap`. There appears to be a problem with the way it's called though, due to a corner case. In some cases, allocating the memory requires to store the memory map can c= ause the map to become fragmented; this means a _second_ call to `BS->GetMemoryM= ap` can also return EFI_BUFFER_TOO_SMALL. One workaround is to call it in a loop (with a max of, say 10 times) until the memory needed to store the map does= n't change. --=20 You are receiving this mail because: You are the assignee for the bug.=
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