io_[p]getevents syscall should return -EINVAL if timeout is out of
range, add this validity check.
Signed-off-by: zhangyi (F) <yi.zhang@xxxxxxxxxx>
Reviewed-by: Jeff Moyer <jmoyer@xxxxxxxxxx>
Cc: Jeff Moyer <jmoyer@xxxxxxxxxx>
Cc: Arnd Bergmann <arnd@xxxxxxxx>
Cc: Deepa Dinamani <deepa.kernel@xxxxxxxxx>
---
Changes since v1:
- add Reviewed-by and Cc tags.
fs/aio.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
diff --git a/fs/aio.c b/fs/aio.c
index 01e0fb9..dd967a0 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -2031,10 +2031,17 @@ static long do_io_getevents(aio_context_t ctx_id,
struct io_event __user *events,
struct timespec64 *ts)
{
- ktime_t until = ts ? timespec64_to_ktime(*ts) : KTIME_MAX;
- struct kioctx *ioctx = lookup_ioctx(ctx_id);
+ ktime_t until = KTIME_MAX;
+ struct kioctx *ioctx = NULL;
long ret = -EINVAL;
+ if (ts) {
+ if (!timespec64_valid(ts))
+ return ret;
+ until = timespec64_to_ktime(*ts);
+ }
+
+ ioctx = lookup_ioctx(ctx_id);
if (likely(ioctx)) {
if (likely(min_nr <= nr && min_nr >= 0))
ret = read_events(ioctx, min_nr, nr, events, until);
--
2.7.4
