Date: Thu, 07 Sep 2017 16:06:32 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 222077] geli(8) writing uninitialized memory out to disk Message-ID: <bug-222077-8-aoS6BTkh9N@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-222077-8@https.bugs.freebsd.org/bugzilla/> References: <bug-222077-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=222077 --- Comment #4 from Conrad Meyer <cem@freebsd.org> --- (In reply to Maxim Khitrov from comment #3) This issue is a userspace leak. It comes from g_metadata_store() in the geom userspace code: fd = g_open(name, 1); ... sectorsize = g_sectorsize(fd); // E.g., 4096 ... assert(sectorsize >= (ssize_t)size); // size == metadata size, e.g., 512 sector = malloc(sectorsize); // malloc doesn't zero contents ... bcopy(md, sector, size); // only first size bytes are initialized if (pwrite(fd, sector, sectorsize, mediasize - sectorsize) != sectorsize) { // sectorsize bytes are written -- You are receiving this mail because: You are the assignee for the bug.help
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