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| author | Nathan Chancellor <natechancellor@gmail.com> | 2020-03-27 20:10:30 +0300 |
|---|---|---|
| committer | Jan Kara <jack@suse.cz> | 2020-03-30 13:40:53 +0300 |
| commit | 6def1a1d2d58eda5834fe2e2ace4560f9cdd7de1 (patch) | |
| tree | 4d186f573b767e16a911c82c38d3b8e2fb16b90c /fs/notify/fanotify | |
| parent | 44d705b0370b1d581f46ff23e5d33e8b5ff8ec58 (diff) | |
| download | linux-6def1a1d2d58eda5834fe2e2ace4560f9cdd7de1.tar.xz | |
fanotify: Fix the checks in fanotify_fsid_equal
Clang warns:
fs/notify/fanotify/fanotify.c:28:23: warning: self-comparison always
evaluates to true [-Wtautological-compare]
return fsid1->val[0] == fsid1->val[0] && fsid2->val[1] == fsid2->val[1];
^
fs/notify/fanotify/fanotify.c:28:57: warning: self-comparison always
evaluates to true [-Wtautological-compare]
return fsid1->val[0] == fsid1->val[0] && fsid2->val[1] == fsid2->val[1];
^
2 warnings generated.
The intention was clearly to compare val[0] and val[1] in the two
different fsid structs. Fix it otherwise this function always returns
true.
Fixes: afc894c784c8 ("fanotify: Store fanotify handles differently")
Link: https://github.com/ClangBuiltLinux/linux/issues/952
Link: https://lore.kernel.org/r/20200327171030.30625-1-natechancellor@gmail.com
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/notify/fanotify')
| -rw-r--r-- | fs/notify/fanotify/fanotify.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/notify/fanotify/fanotify.c b/fs/notify/fanotify/fanotify.c index 4c1a4eb597d5..5435a40f82be 100644 --- a/fs/notify/fanotify/fanotify.c +++ b/fs/notify/fanotify/fanotify.c @@ -25,7 +25,7 @@ static bool fanotify_path_equal(struct path *p1, struct path *p2) static inline bool fanotify_fsid_equal(__kernel_fsid_t *fsid1, __kernel_fsid_t *fsid2) { - return fsid1->val[0] == fsid1->val[0] && fsid2->val[1] == fsid2->val[1]; + return fsid1->val[0] == fsid2->val[0] && fsid1->val[1] == fsid2->val[1]; } static bool fanotify_fh_equal(struct fanotify_fh *fh1, |