Date: Wed, 15 Mar 2017 19:48:33 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-fs@FreeBSD.org Subject: [Bug 216964] boot1.efi: can't boot from ZFS on 4kn HDD Message-ID: <bug-216964-3630-j8qyjty5CE@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-216964-3630@https.bugs.freebsd.org/bugzilla/> References: <bug-216964-3630@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D216964 --- Comment #9 from commit-hook@freebsd.org --- A commit references this bug: Author: tsoome Date: Wed Mar 15 19:48:22 UTC 2017 New revision: 315326 URL: https://svnweb.freebsd.org/changeset/base/315326 Log: boot1.efi: can't boot from ZFS on 4kn HDD The boot1.efi immediate issue from PR216964 is that we are reading into too small buffer, from UEFI spec 2.6: The size of the Buffer in bytes. This must be a multiple of the intrinsic block size of the device. The secondary issue is that LBA calculation does not check reminder from division. This fix does check the provided buffer size and if we read less than media sector size or the read offset is not aligned to sector boundary, we allocate bounce buffer and perform the read by single sector. PR: 216964 Reported by: Sergey Kozlov Reviewed by: allanjude, Sergey Kozlov Approved by: allanjude (mentor) MFC after: 2 weeks Differential Revision: https://reviews.freebsd.org/D9870 Changes: head/sys/boot/efi/boot1/zfs_module.c --=20 You are receiving this mail because: You are the assignee for the bug.=
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