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| author | H. Peter Anvin <hpa@linux.intel.com> | 2014-02-02 17:57:28 -0800 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2014-02-02 18:00:29 -0800 |
| commit | dce44e03b0a3448ad11ac6c6e0cbe299e0400791 (patch) | |
| tree | a5ba20404d5159a7cb00d3b8e448ec17f50322f3 /kernel/compat.c | |
| parent | 81993e81a994504f4c8b97d3410c9a052cdbcc9d (diff) | |
| download | lwn-dce44e03b0a3448ad11ac6c6e0cbe299e0400791.tar.gz lwn-dce44e03b0a3448ad11ac6c6e0cbe299e0400791.zip | |
compat: Fix sparse address space warnings
In compat_sys_old_getrlimit() we pass a kernel pointer to
sys_old_getrlimit() inside a set_fs() bracket. This is okay, so we
can safely cast the affected pointer to __user.
In compat_clock_nanosleep_restart(), the variable "rmtp" holds a user
pointer. Annotate it as such.
Both of these warnings are ancient, but were reported by Fengguang
Wu's test system due to other changes.
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: Toyo Abe <toyoa@mvista.com>
Link: http://lkml.kernel.org/n/tip-507h7cq5e45eg6ygtykon3bf@git.kernel.org
Diffstat (limited to 'kernel/compat.c')
| -rw-r--r-- | kernel/compat.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/compat.c b/kernel/compat.c index 3afc524a57ad..7076b57fa52e 100644 --- a/kernel/compat.c +++ b/kernel/compat.c @@ -451,7 +451,7 @@ asmlinkage long compat_sys_old_getrlimit(unsigned int resource, mm_segment_t old_fs = get_fs(); set_fs(KERNEL_DS); - ret = sys_old_getrlimit(resource, &r); + ret = sys_old_getrlimit(resource, (struct rlimit __user *)&r); set_fs(old_fs); if (!ret) { @@ -799,7 +799,7 @@ static long compat_clock_nanosleep_restart(struct restart_block *restart) long err; mm_segment_t oldfs; struct timespec tu; - struct compat_timespec *rmtp = restart->nanosleep.compat_rmtp; + struct compat_timespec __user *rmtp = restart->nanosleep.compat_rmtp; restart->nanosleep.rmtp = (struct timespec __user *) &tu; oldfs = get_fs(); |