system/linux
system/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux synced 2024-07-21 10:41:44 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

io_uring/net: correctly handle multishot recvmsg retry setup

Browse source 
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:
Jens Axboe 2024-03-07 17:48:03 -07:00
parent b5311dbc2c
commit deaef31bc1
1 changed files with 2 additions and 1 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

3
io_uring/net.c
View file

@ -931,7 +931,8 @@ int io_recvmsg(struct io_kiocb *req, unsigned int issue_flags)
kfree(kmsg->free_iov);
io_netmsg_recycle(req, issue_flags);
req->flags &= ~REQ_F_NEED_CLEANUP;
}
} else if (ret == -EAGAIN)
return io_setup_async_msg(req, kmsg, issue_flags);
return ret;
}