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There are a couple more files that cause the script to stall.
/sys/firmware/devicetree and its symlink /proc/device-tree, reported by
Michael Ellerman.
usbmon should be skipped were ever it appears. Reported by Kees Cook
Add files to be excluded from parsing.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Currently script accepts files to skip. This was added to make running
the script faster (for repeat runs). We can remove this functionality in
preparation for adding sub commands (scan and format) to the script.
Remove command line options.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
debug_arrays is not called. Also, %seen hash is not used. We should
remove unused code.
Remove dead code.
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Currently we are leaking addresses from the kernel to user space. This
script is an attempt to find some of those leakages. Script parses
`dmesg` output and /proc and /sys files for hex strings that look like
kernel addresses.
Only works for 64 bit kernels, the reason being that kernel addresses on
64 bit kernels have 'ffff' as the leading bit pattern making greping
possible. On 32 kernels we don't have this luxury.
Scripts is _slightly_ smarter than a straight grep, we check for false
positives (all 0's or all 1's, and vsyscall start/finish addresses).
[ I think there is a lot of room for improvement here, but it's already
useful, so I'm merging it as-is. The whole "hash %p format" series is
expected to go into 4.15, but will not fix %x users, and will not
incentivize people to look at what they are leaking. - Linus ]
Signed-off-by: Tobin C. Harding <me@tobin.cc>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
