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io_uring: fix mis-seting personality's creds

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After io_identity_cow() copies an work.identity it wants to copy creds
to the new just allocated id, not the old one. Otherwise it's
akin to req->work.identity->creds = req->work.identity->creds.

Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Pavel Begunkov 2020-12-06 22:22:46 +00:00 committed by Jens Axboe
parent 2d280bc893
commit e8c954df23
1 changed files with 1 additions and 1 deletions
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2
fs/io_uring.c
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@ -1284,7 +1284,7 @@ static bool io_identity_cow(struct io_kiocb *req)
*/
io_init_identity(id);
if (creds)
req->work.identity->creds = creds;
id->creds = creds;
/* add one for this request */
refcount_inc(&id->count);