* [PATCH v1] fs/select: check return value of poll_select_set_timeout()
@ 2022-08-23 5:47 lily
0 siblings, 0 replies; only message in thread
From: lily @ 2022-08-23 5:47 UTC (permalink / raw)
To: linux-fsdevel, linux-kernel; +Cc: viro, lily
Check poll_select_set_timeout(), which could fail and return error.
Signed-off-by: Li Zhong <floridsleeves@gmail.com>
---
fs/select.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/fs/select.c b/fs/select.c
index 0ee55af1a55c..d9febe1b846b 100644
--- a/fs/select.c
+++ b/fs/select.c
@@ -1073,8 +1073,8 @@ SYSCALL_DEFINE3(poll, struct pollfd __user *, ufds, unsigned int, nfds,
if (timeout_msecs >= 0) {
to = &end_time;
- poll_select_set_timeout(to, timeout_msecs / MSEC_PER_SEC,
- NSEC_PER_MSEC * (timeout_msecs % MSEC_PER_SEC));
+ if (poll_select_set_timeout(to, timeout_msecs / MSEC_PER_SEC, NSEC_PER_MSEC * (timeout_msecs % MSEC_PER_SEC)))
+ return -EINVAL;
}
ret = do_sys_poll(ufds, nfds, to);
--
2.25.1
^ permalink raw reply [flat|nested] only message in thread
only message in thread, other threads:[~2022-08-23 5:48 UTC | newest]
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2022-08-23 5:47 [PATCH v1] fs/select: check return value of poll_select_set_timeout() lily
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox
all inboxes | Powered by JetHome®