Kees Cook d7c816733d
list: Split list_add() debug checking into separate function ...
Right now, __list_add() code is repeated either in list.h or in
list_debug.c, but the only differences between the two versions
are the debug checks. This commit therefore extracts these debug
checks into a separate __list_add_valid() function and consolidates
__list_add(). Additionally this new __list_add_valid() function will stop
list manipulations if a corruption is detected, instead of allowing for
further corruption that may lead to even worse conditions.
This is slight refactoring of the same hardening done in PaX and Grsecurity.
Signed-off-by: Kees Cook <keescook@chromium.org >
Acked-by: Steven Rostedt <rostedt@goodmis.org >
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com >
Acked-by: Rik van Riel <riel@redhat.com >
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d7c816733d