* [PATCH] io_uring: check that data field is 0 in ringfd unregister
@ 2022-04-29 14:22 Eugene Syromiatnikov
2022-04-29 14:40 ` Jens Axboe
0 siblings, 1 reply; 2+ messages in thread
From: Eugene Syromiatnikov @ 2022-04-29 14:22 UTC (permalink / raw)
To: Jens Axboe, Pavel Begunkov; +Cc: io-uring, linux-kernel
Only allow data field to be 0 in struct io_uring_rsrc_update user
arguments to allow for future possible usage.
Fixes: e7a6c00dc77a ("io_uring: add support for registering ring file descriptors")
Signed-off-by: Eugene Syromiatnikov <[email protected]>
---
fs/io_uring.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/io_uring.c b/fs/io_uring.c
index 7625b29..4e32338 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -10588,7 +10588,7 @@ static int io_ringfd_unregister(struct io_ring_ctx *ctx, void __user *__arg,
ret = -EFAULT;
break;
}
- if (reg.resv || reg.offset >= IO_RINGFD_REG_MAX) {
+ if (reg.resv || reg.data || reg.offset >= IO_RINGFD_REG_MAX) {
ret = -EINVAL;
break;
}
--
2.1.4
^ permalink raw reply related [flat|nested] 2+ messages in thread
end of thread, other threads:[~2022-04-29 14:41 UTC | newest]
Thread overview: 2+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2022-04-29 14:22 [PATCH] io_uring: check that data field is 0 in ringfd unregister Eugene Syromiatnikov
2022-04-29 14:40 ` Jens Axboe
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox