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| author | Kees Cook <keescook@chromium.org> | 2016-07-19 13:04:14 -0700 |
|---|---|---|
| committer | Kees Cook <keescook@chromium.org> | 2016-08-01 14:27:23 -0700 |
| commit | 300108740b659c2380a731f147dd85ca0365db4f (patch) | |
| tree | 161a3dac79c115ce564e6650436db31821620726 /drivers | |
| parent | 0e06f5c0deeef0332a5da2ecb8f1fcf3e024d958 (diff) | |
| download | linux-300108740b659c2380a731f147dd85ca0365db4f.tar.gz linux-300108740b659c2380a731f147dd85ca0365db4f.tar.bz2 linux-300108740b659c2380a731f147dd85ca0365db4f.zip | |
lkdtm: fix false positive warning from -Wmaybe-uninitialized
The variable in use here doesn't matter (it's just used to exercise taking
up stack space), but this changes its use to pass its address instead,
to avoid a compiler warning:
drivers/misc/lkdtm_usercopy.c:54:15: warning: 'bad_stack' may be used uninitialized in this function [-Wmaybe-uninitialized]
Reported-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kees Cook <keescook@chromium.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/misc/lkdtm_usercopy.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/misc/lkdtm_usercopy.c b/drivers/misc/lkdtm_usercopy.c index 5a3fd76eec27..5525a204db93 100644 --- a/drivers/misc/lkdtm_usercopy.c +++ b/drivers/misc/lkdtm_usercopy.c @@ -49,7 +49,7 @@ static noinline void do_usercopy_stack(bool to_user, bool bad_frame) /* This is a pointer to outside our current stack frame. */ if (bad_frame) { - bad_stack = do_usercopy_stack_callee((uintptr_t)bad_stack); + bad_stack = do_usercopy_stack_callee((uintptr_t)&bad_stack); } else { /* Put start address just inside stack. */ bad_stack = task_stack_page(current) + THREAD_SIZE; |