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io_uring/net: correctly handle multishot recvmsg retry setup
If we loop for multishot receive on the initial attempt, and then abort
later on to wait for more, we miss a case where we should be copying the
io_async_msghdr from the stack to stable storage. This leads to the next
retry potentially failing, if the application had the msghdr on the
stack.
Cc: stable@vger.kernel.org
Fixes: 9bb66906f2
("io_uring: support multishot in recvmsg")
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
parent
b5311dbc2c
commit
deaef31bc1
1 changed files with 2 additions and 1 deletions
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@ -931,7 +931,8 @@ int io_recvmsg(struct io_kiocb *req, unsigned int issue_flags)
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kfree(kmsg->free_iov);
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io_netmsg_recycle(req, issue_flags);
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req->flags &= ~REQ_F_NEED_CLEANUP;
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}
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} else if (ret == -EAGAIN)
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return io_setup_async_msg(req, kmsg, issue_flags);
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return ret;
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}
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