OpenCloudOS-Kernel/net/9p
Dominique Martinet 35663b6b49 9p: v9fs_listxattr: fix %s null argument warning
[ Upstream commit 9b5c6281838fc84683dd99b47302d81fce399918 ]

W=1 warns about null argument to kprintf:
In file included from fs/9p/xattr.c:12:
In function ‘v9fs_xattr_get’,
    inlined from ‘v9fs_listxattr’ at fs/9p/xattr.c:142:9:
include/net/9p/9p.h:55:2: error: ‘%s’ directive argument is null
[-Werror=format-overflow=]
   55 |  _p9_debug(level, __func__, fmt, ##__VA_ARGS__)
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Use an empty string instead of :
 - this is ok 9p-wise because p9pdu_vwritef serializes a null string
and an empty string the same way (one '0' word for length)
 - since this degrades the print statements, add new single quotes for
xattr's name delimter (Old: "file = (null)", new: "file = ''")

Link: https://lore.kernel.org/r/20231008060138.517057-1-suhui@nfschina.com
Suggested-by: Su Hui <suhui@nfschina.com>
Signed-off-by: Dominique Martinet <asmadeus@codewreck.org>
Acked-by: Christian Schoenebeck <linux_oss@crudebyte.com>
Message-ID: <20231025103445.1248103-2-asmadeus@codewreck.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2023-11-28 17:19:46 +00:00
..
Kconfig 9p: Remove INET dependency 2023-05-04 21:46:57 +01:00
Makefile 9p/trans_fd: split into dedicated module 2022-01-10 09:58:30 +09:00
client.c 9p: v9fs_listxattr: fix %s null argument warning 2023-11-28 17:19:46 +00:00
error.c 9p: fix a bunch of checkpatch warnings 2021-11-04 21:04:25 +09:00
mod.c net/p9: load default transports 2022-01-10 10:00:09 +09:00
protocol.c net/9p: add p9_msg_buf_size() 2022-10-05 07:05:41 +09:00
protocol.h net/9p: add p9_msg_buf_size() 2022-10-05 07:05:41 +09:00
trans_common.c 9p: fix file headers 2021-11-03 17:45:04 +09:00
trans_common.h 9p: fix a bunch of checkpatch warnings 2021-11-04 21:04:25 +09:00
trans_fd.c 9p/trans_fd: Annotate data-racy writes to file::f_flags 2023-11-28 17:19:46 +00:00
trans_rdma.c 9p/rdma: unmap receive dma buffer in rdma_request()/post_recv() 2023-02-24 13:42:28 +00:00
trans_virtio.c 9p: virtio: skip incrementing unused variable 2023-07-20 19:14:50 +00:00
trans_xen.c 9p/xen : Fix use after free bug in xen_9pfs_front_remove due to race condition 2023-04-02 01:00:31 +00:00