s390: convert debug_info.ref_count from atomic_t to refcount_t

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refcount_t type and corresponding API should be
used instead of atomic_t when the variable is used as
a reference counter. This allows to avoid accidental
refcounter overflows that might lead to use-after-free
situations.

Signed-off-by: Elena Reshetova <elena.reshetova@intel.com>
Signed-off-by: Hans Liljestrand <ishkamiel@gmail.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: David Windsor <dwindsor@gmail.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

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Elena Reshetova 2017-03-02 12:23:45 +01:00 • committed by Martin Schwidefsky

parent d04a4c76f7

commit efc0c21c9e

2 changed files with 6 additions and 5 deletions

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3

arch/s390/include/asm/debug.h

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8

arch/s390/kernel/debug.c

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