Do you have experience using the wrap property? When I attempt to use it, even for very simple wrappers on system apps, it crashes the entire phone due to a failure to restat the file descriptor table, which appears to result from a failure to run CreateFromFd on a pipe (S_ISFIFO) in the zygote. This occurs even on system apps (tried wrap.com.google.android.youtube, in addition to my own apps), and even when the wrapper is as simple as I could come up with (for example, 'setprop wrap.com.google.android.youtube "exec $@" '). It reproduces for me on a 5X and a 6P running android 7.1.2. Both are rooted, with selinux set to permissive.
I could try flashing my phone with an older version of android, if this is likely to be a bug in android itself. On Thursday, May 18, 2017 at 3:48:39 PM UTC-4, Evgeniy Stepanov wrote: > > Hi, > > There is a system property that lets you prepend anything to the > zygote command line for a specific application, "wrap.<app-name>". It > requires a rooted device, but does not require remounting system r/w. > > In theory, this requirement could be relaxed by allowing wrapping apps > even on a locked device based on the app manifest - some property like > "debuggable". That requires changing android platform source. > > https://source.android.com/devices/tech/debug/asan#using_the_wrap_property > > On Thu, May 18, 2017 at 8:29 AM, Francis Ricci <franci...@gmail.com > <javascript:>> wrote: > > Hi all! > > > > Historically, I've always used ASan on a rooted/flashed device, as the > > asan_device_setup script requires root access. Is it possible (even in > > theory, or with some extra work in the codebase) to run ASan on a > non-rooted > > device? I know you can for a simple C++ binary, since you can just run > that > > via the command-line with LD_PRELOAD. But I know things are quite a bit > more > > complex for apps, since you can't over-write app_process without a r/w > > system partition. What I've found online so far mostly points to shadow > > memory and libc issues. > > > > It would be quite valuable for me to be able to run ASan on apps on > > non-rooted phones (even if I could only get a subset of checks to work), > so > > I'd be willing to put in a fair amount of work to make it happen, if > it's > > the sort of thing that could be possible. > > > > Thanks! > > Francis > > > > -- > > You received this message because you are subscribed to the Google > Groups > > "address-sanitizer" group. > > To unsubscribe from this group and stop receiving emails from it, send > an > > email to address-saniti...@googlegroups.com <javascript:>. > > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "address-sanitizer" group. To unsubscribe from this group and stop receiving emails from it, send an email to address-sanitizer+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
