An unused variable will be exposed by a backport of mainline commit
0a5f41767444 ("kbuild: clang: disable unused variable warnings only
when constant").
kernel/cfi.c:231:16: warning: unused variable 'check'
[-Wunused-variable]
unsigned long check;
^
1 warning generated.
Remove it so there is no more warning.
Change-Id: I05a4c20d2a54790991dc1c88c48d8258c548a8cd
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
If the module area base address changes when loading a new module, the
new CFI shadow will only cover the first allocated page for each existing
module. This will cause cross-DSO look-ups to functions elsewhere in the
module to fall back to a red-black tree, which may be slower.
Bug: 122963951
Change-Id: I9262034d39351afcd42590ead8d6384fc30a8ce8
Reported-by: Wu,Le <wule01@baidu.com>
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
This change adds the CONFIG_CFI_CLANG option, CFI error handling,
and a faster look-up table for cross module CFI checks.
Bug: 67506682
Change-Id: Ic009f0a629b552a0eb16e6d89808c7029e91447d
Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
