Date: Tue, 14 Feb 2017 20:21:35 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-fs@FreeBSD.org Subject: [Bug 217062] for file systems mounted with -o noexec, exec=off property does not work for mmap Message-ID: <bug-217062-3630-zPC2AXynVo@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-217062-3630@https.bugs.freebsd.org/bugzilla/> References: <bug-217062-3630@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D217062 --- Comment #6 from shamaz.mazum@gmail.com --- (In reply to Konstantin Belousov from comment #4) Thanks for the fix. This discrepancy between mmap and mprotect made me think that there was a bug there. If you are interested, I noticed that, as I said before, trying to launch SBCL (Steel Bank Common Lisp) with a core image st= ored in my home no-exec file system. It failed to start because it maps core ima= ge in memory and then calls mprotect for those mappings. But when I opened a shared library using foreign functions interface, it worked perfectly (I believe dynamic linker uses mmap). > If you determined, there is nothing which could prevent you from mapping = anonymous memory, copying data from the file into it, and then executing. Yes, you are right. Too bad for my paranoia ;) --=20 You are receiving this mail because: You are the assignee for the bug.=
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