This is a note to let you know that I've just added the patch titled
smbdirect: missing rc checks while waiting for rdma events
to the 5.4-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
smbdirect-missing-rc-checks-while-waiting-for-rdma-events.patch
and it can be found in the queue-5.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 0555b221528e9cb11f5766dcdee19c809187e42e Mon Sep 17 00:00:00 2001
From: Steve French <stfrench@xxxxxxxxxxxxx>
Date: Mon, 21 Jun 2021 16:25:20 -0500
Subject: smbdirect: missing rc checks while waiting for rdma events
From: Steve French <stfrench@xxxxxxxxxxxxx>
commit 0555b221528e9cb11f5766dcdee19c809187e42e upstream.
There were two places where we weren't checking for error
(e.g. ERESTARTSYS) while waiting for rdma resolution.
Addresses-Coverity: 1462165 ("Unchecked return value")
Reviewed-by: Tom Talpey <tom@xxxxxxxxxx>
Reviewed-by: Long Li <longli@xxxxxxxxxxxxx>
Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx>
Signed-off-by: Anastasia Belova <abelova@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/cifs/smbdirect.c | 14 ++++++++++++--
1 file changed, 12 insertions(+), 2 deletions(-)
--- a/fs/cifs/smbdirect.c
+++ b/fs/cifs/smbdirect.c
@@ -607,8 +607,13 @@ static struct rdma_cm_id *smbd_create_id
log_rdma_event(ERR, "rdma_resolve_addr() failed %i\n", rc);
goto out;
}
- wait_for_completion_interruptible_timeout(
+ rc = wait_for_completion_interruptible_timeout(
&info->ri_done, msecs_to_jiffies(RDMA_RESOLVE_TIMEOUT));
+ /* e.g. if interrupted returns -ERESTARTSYS */
+ if (rc < 0) {
+ log_rdma_event(ERR, "rdma_resolve_addr timeout rc: %i\n", rc);
+ goto out;
+ }
rc = info->ri_rc;
if (rc) {
log_rdma_event(ERR, "rdma_resolve_addr() completed %i\n", rc);
@@ -621,8 +626,13 @@ static struct rdma_cm_id *smbd_create_id
log_rdma_event(ERR, "rdma_resolve_route() failed %i\n", rc);
goto out;
}
- wait_for_completion_interruptible_timeout(
+ rc = wait_for_completion_interruptible_timeout(
&info->ri_done, msecs_to_jiffies(RDMA_RESOLVE_TIMEOUT));
+ /* e.g. if interrupted returns -ERESTARTSYS */
+ if (rc < 0) {
+ log_rdma_event(ERR, "rdma_resolve_addr timeout rc: %i\n", rc);
+ goto out;
+ }
rc = info->ri_rc;
if (rc) {
log_rdma_event(ERR, "rdma_resolve_route() completed %i\n", rc);
Patches currently in stable-queue which might be from stfrench@xxxxxxxxxxxxx are
queue-5.4/smbdirect-missing-rc-checks-while-waiting-for-rdma-events.patch
