* [PATCH 5.15 054/411] smb: client: fix smbdirect_recv_io leak in smbd_negotiate() error path
[not found] <20260616145100.376842714@linuxfoundation.org>
@ 2026-06-16 14:54 ` Greg Kroah-Hartman
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From: Greg Kroah-Hartman @ 2026-06-16 14:54 UTC (permalink / raw)
To: stable
Cc: Greg Kroah-Hartman, patches, Steve French, Tom Talpey, Long Li,
Namjae Jeon, linux-cifs, samba-technical, Stefan Metzmacher,
Steve French, Robert Garcia, Sasha Levin
5.15-stable review patch. If anyone has any objections, please let me know.
------------------
From: Stefan Metzmacher <metze@samba.org>
[ Upstream commit daac51c7032036a0ca5f1aa419ad1b0471d1c6e0 ]
During tests of another unrelated patch I was able to trigger this
error: Objects remaining on __kmem_cache_shutdown()
Cc: Steve French <smfrench@gmail.com>
Cc: Tom Talpey <tom@talpey.com>
Cc: Long Li <longli@microsoft.com>
Cc: Namjae Jeon <linkinjeon@kernel.org>
Cc: linux-cifs@vger.kernel.org
Cc: samba-technical@lists.samba.org
Fixes: f198186aa9bb ("CIFS: SMBD: Establish SMB Direct connection")
Signed-off-by: Stefan Metzmacher <metze@samba.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Robert Garcia <rob_garcia@163.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/cifs/smbdirect.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/fs/cifs/smbdirect.c b/fs/cifs/smbdirect.c
index 48bd879349fbe2..c9bda34fd2f573 100644
--- a/fs/cifs/smbdirect.c
+++ b/fs/cifs/smbdirect.c
@@ -1084,8 +1084,10 @@ static int smbd_negotiate(struct smbd_connection *info)
log_rdma_event(INFO, "smbd_post_recv rc=%d iov.addr=%llx iov.length=%x iov.lkey=%x\n",
rc, response->sge.addr,
response->sge.length, response->sge.lkey);
- if (rc)
+ if (rc) {
+ put_receive_buffer(info, response);
return rc;
+ }
init_completion(&info->negotiate_completion);
info->negotiate_done = false;
--
2.53.0
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