[PATCH 5.10 045/202] libceph: use kernel_connect()

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



5.10-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Jordan Rife <jrife@xxxxxxxxxx>

commit 7563cf17dce0a875ba3d872acdc63a78ea344019 upstream.

Direct calls to ops->connect() can overwrite the address parameter when
used in conjunction with BPF SOCK_ADDR hooks. Recent changes to
kernel_connect() ensure that callers are insulated from such side
effects. This patch wraps the direct call to ops->connect() with
kernel_connect() to prevent unexpected changes to the address passed to
ceph_tcp_connect().

This change was originally part of a larger patch targeting the net tree
addressing all instances of unprotected calls to ops->connect()
throughout the kernel, but this change was split up into several patches
targeting various trees.

Cc: stable@xxxxxxxxxxxxxxx
Link: https://lore.kernel.org/netdev/20230821100007.559638-1-jrife@xxxxxxxxxx/
Link: https://lore.kernel.org/netdev/9944248dba1bce861375fcce9de663934d933ba9.camel@xxxxxxxxxx/
Fixes: d74bad4e74ee ("bpf: Hooks for sys_connect")
Signed-off-by: Jordan Rife <jrife@xxxxxxxxxx>
Reviewed-by: Ilya Dryomov <idryomov@xxxxxxxxx>
Signed-off-by: Ilya Dryomov <idryomov@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 net/ceph/messenger.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/net/ceph/messenger.c
+++ b/net/ceph/messenger.c
@@ -477,8 +477,8 @@ static int ceph_tcp_connect(struct ceph_
 	dout("connect %s\n", ceph_pr_addr(&con->peer_addr));
 
 	con_sock_state_connecting(con);
-	ret = sock->ops->connect(sock, (struct sockaddr *)&ss, sizeof(ss),
-				 O_NONBLOCK);
+	ret = kernel_connect(sock, (struct sockaddr *)&ss, sizeof(ss),
+			     O_NONBLOCK);
 	if (ret == -EINPROGRESS) {
 		dout("connect %s EINPROGRESS sk_state = %u\n",
 		     ceph_pr_addr(&con->peer_addr),





[Index of Archives]     [Linux Kernel]     [Kernel Development Newbies]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite Hiking]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux