17 Oct, 2020
1 commit
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Patch series "add fault injection to user memory access", v3.
The goal of this series is to improve testing of fault-tolerance in usages
of user memory access functions, by adding support for fault injection.syzkaller/syzbot are using the existing fault injection modes and will use
this particular feature also.The first patch adds failure injection capability for usercopy functions.
The second changes usercopy functions to use this new failure capability
(copy_from_user, ...). The third patch adds get/put/clear_user failures
to x86.This patch (of 3):
Add a failure injection capability to improve testing of fault-tolerance
in usages of user memory access functions.Add CONFIG_FAULT_INJECTION_USERCOPY to enable faults in usercopy
functions. The should_fail_usercopy function is to be called by these
functions (copy_from_user, get_user, ...) in order to fail or not.Signed-off-by: Albert van der Linde
Signed-off-by: Andrew Morton
Reviewed-by: Akinobu Mita
Reviewed-by: Alexander Potapenko
Cc: Borislav Petkov
Cc: Ingo Molnar
Cc: Jonathan Corbet
Cc: Thomas Gleixner
Cc: Arnd Bergmann
Cc: Peter Zijlstra (Intel)
Cc: "H. Peter Anvin"
Cc: Al Viro
Cc: Andrey Konovalov
Cc: Dmitry Vyukov
Cc: Marco Elver
Cc: Christoph Hellwig
Link: http://lkml.kernel.org/r/20200831171733.955393-1-alinde@google.com
Link: http://lkml.kernel.org/r/20200831171733.955393-2-alinde@google.com
Signed-off-by: Linus Torvalds
