diff options
| author | Marco Elver <elver@google.com> | 2020-02-05 13:14:19 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2020-03-21 11:42:42 +0300 |
| commit | ed95f95c86cd53621103d865d62b5e1f96e60edb (patch) | |
| tree | 494951a23a0a3a22bccecb1de3ae460ee31cc1c0 /include/linux/kcsan-checks.h | |
| parent | 8cfbb04fae75260eae07ab8c74c1dcd44294d739 (diff) | |
| download | linux-ed95f95c86cd53621103d865d62b5e1f96e60edb.tar.xz | |
kcsan: Fix 0-sized checks
Instrumentation of arbitrary memory-copy functions, such as user-copies,
may be called with size of 0, which could lead to false positives.
To avoid this, add a comparison in check_access() for size==0, which
will be optimized out for constant sized instrumentation
(__tsan_{read,write}N), and therefore not affect the common-case
fast-path.
Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/kcsan-checks.h')
0 files changed, 0 insertions, 0 deletions