On 2017-10-16 at 18:09 Dmitry Vyukov <[email protected]> wrote:
> I failed to create a C reproducer. If I am reading this correctly, sys_exec
> is exec system call. Fuzzer itself does not call exec. So I wonder what
> calls exec. This probably explains why I can't create a standalone repro. Do
> you see from crash message what is the process that caused the panic?
It looks like sh, since it was the process running at the time. Do you
have a bash script of some sort running to drive syz-executor?
As far as the backtrace goes, you can use:
addr2line -e obj/kern/akaros-kernel-64
Though in this case, it won't help much - I can see the codepath
regardless of line numbers. It looks like we're just failing to read a
file in generic_file_read().
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