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* [PATCH AUTOSEL 5.13 16/19] cifs: fix the out of range assignment to bit fields in parse_server_interfaces
       [not found] <20210723035721.531372-1-sashal@kernel.org>
@ 2021-07-23  3:57 ` Sasha Levin
  0 siblings, 0 replies; only message in thread
From: Sasha Levin @ 2021-07-23  3:57 UTC (permalink / raw)
  To: linux-kernel, stable
  Cc: Hyunchul Lee, Steve French, Sasha Levin, linux-cifs, samba-technical

From: Hyunchul Lee <hyc.lee@gmail.com>

[ Upstream commit c9c9c6815f9004ee1ec87401ed0796853bd70f1b ]

Because the out of range assignment to bit fields
are compiler-dependant, the fields could have wrong
value.

Signed-off-by: Hyunchul Lee <hyc.lee@gmail.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 fs/cifs/smb2ops.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index 903de7449aa3..1e5b707833aa 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -555,8 +555,8 @@ parse_server_interfaces(struct network_interface_info_ioctl_rsp *buf,
 	p = buf;
 	while (bytes_left >= sizeof(*p)) {
 		info->speed = le64_to_cpu(p->LinkSpeed);
-		info->rdma_capable = le32_to_cpu(p->Capability & RDMA_CAPABLE);
-		info->rss_capable = le32_to_cpu(p->Capability & RSS_CAPABLE);
+		info->rdma_capable = le32_to_cpu(p->Capability & RDMA_CAPABLE) ? 1 : 0;
+		info->rss_capable = le32_to_cpu(p->Capability & RSS_CAPABLE) ? 1 : 0;
 
 		cifs_dbg(FYI, "%s: adding iface %zu\n", __func__, *iface_count);
 		cifs_dbg(FYI, "%s: speed %zu bps\n", __func__, info->speed);
-- 
2.30.2


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2021-07-23  3:57 ` [PATCH AUTOSEL 5.13 16/19] cifs: fix the out of range assignment to bit fields in parse_server_interfaces Sasha Levin

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