* [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 <esyr@redhat.com>
---
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
* Re: [PATCH] io_uring: check that data field is 0 in ringfd unregister
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
0 siblings, 0 replies; 2+ messages in thread
From: Jens Axboe @ 2022-04-29 14:40 UTC (permalink / raw)
To: esyr, asml.silence; +Cc: linux-kernel, io-uring
On Fri, 29 Apr 2022 16:22:18 +0200, Eugene Syromiatnikov wrote:
> Only allow data field to be 0 in struct io_uring_rsrc_update user
> arguments to allow for future possible usage.
>
>
Applied, thanks!
[1/1] io_uring: check that data field is 0 in ringfd unregister
commit: 303cc749c8659d5f1ccf97973591313ec0bdacd3
Best regards,
--
Jens Axboe
^ permalink raw reply [flat|nested] 2+ messages in thread
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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
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