* [PATCH] io_uring: fix unchecked error in switch_start()
@ 2021-04-29 10:46 Pavel Begunkov
2021-04-29 14:26 ` Jens Axboe
0 siblings, 1 reply; 2+ messages in thread
From: Pavel Begunkov @ 2021-04-29 10:46 UTC (permalink / raw)
To: Jens Axboe, io-uring; +Cc: syzbot+a4715dd4b7c866136f79
io_rsrc_node_switch_start() can fail, don't forget to check returned
error code.
Reported-by: [email protected]
Fixes: eae071c9b4cef ("io_uring: prepare fixed rw for dynanic buffers")
Signed-off-by: Pavel Begunkov <[email protected]>
---
fs/io_uring.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/fs/io_uring.c b/fs/io_uring.c
index 43b00077dbd3..fe549b58fa64 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -9624,7 +9624,9 @@ static int io_uring_create(unsigned entries, struct io_uring_params *p,
if (ret)
goto err;
/* always set a rsrc node */
- io_rsrc_node_switch_start(ctx);
+ ret = io_rsrc_node_switch_start(ctx);
+ if (ret)
+ goto err;
io_rsrc_node_switch(ctx, NULL);
memset(&p->sq_off, 0, sizeof(p->sq_off));
--
2.31.1
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2021-04-29 10:46 [PATCH] io_uring: fix unchecked error in switch_start() Pavel Begunkov
2021-04-29 14:26 ` Jens Axboe
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