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SubjectRe: [PATCH] cifs: use correct format characters
On Wed, Feb 27, 2019 at 12:23 PM Louis Taylor <louis@kragniz.eu> wrote:
>
> When compiling with -Wformat, clang emits the following warnings:
>
> fs/cifs/smb1ops.c:312:20: warning: format specifies type 'unsigned
> short' but the argument has type 'unsigned int' [-Wformat]
> tgt_total_cnt, total_in_tgt);
> ^~~~~~~~~~~~

Thanks for the patch! This one fails a small sanity check and needs a revision:

So 1 warning in fs/cifs/smb1ops.c, but 2 fixes?

>
> fs/cifs/cifs_dfs_ref.c:289:4: warning: format specifies type 'short'
> but the argument has type 'int' [-Wformat]
> ref->flags, ref->server_type);
> ^~~~~~~~~~
>
> fs/cifs/cifs_dfs_ref.c:289:16: warning: format specifies type 'short'
> but the argument has type 'int' [-Wformat]
> ref->flags, ref->server_type);
> ^~~~~~~~~~~~~~~~
>
> fs/cifs/cifs_dfs_ref.c:291:4: warning: format specifies type 'short'
> but the argument has type 'int' [-Wformat]
> ref->ref_flag, ref->path_consumed);
> ^~~~~~~~~~~~~
>
> fs/cifs/cifs_dfs_ref.c:291:19: warning: format specifies type 'short'
> but the argument has type 'int' [-Wformat]
> ref->ref_flag, ref->path_consumed);
> ^~~~~~~~~~~~~~~~~~
> The types of these arguments are unconditionally defined, so this patch
> updates the format character to the correct ones for ints and unsigned
> ints.
>
> Link: https://github.com/ClangBuiltLinux/linux/issues/378
> Signed-off-by: Louis Taylor <louis@kragniz.eu>
> ---
> fs/cifs/cifs_dfs_ref.c | 4 ++--
> fs/cifs/smb1ops.c | 4 ++--
> 2 files changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/fs/cifs/cifs_dfs_ref.c b/fs/cifs/cifs_dfs_ref.c
> index d9b99abe1243..5d83c924cc47 100644
> --- a/fs/cifs/cifs_dfs_ref.c
> +++ b/fs/cifs/cifs_dfs_ref.c
> @@ -285,9 +285,9 @@ static void dump_referral(const struct dfs_info3_param *ref)
> {
> cifs_dbg(FYI, "DFS: ref path: %s\n", ref->path_name);
> cifs_dbg(FYI, "DFS: node path: %s\n", ref->node_name);
> - cifs_dbg(FYI, "DFS: fl: %hd, srv_type: %hd\n",
> + cifs_dbg(FYI, "DFS: fl: %d, srv_type: %d\n",
> ref->flags, ref->server_type);
> - cifs_dbg(FYI, "DFS: ref_flags: %hd, path_consumed: %hd\n",
> + cifs_dbg(FYI, "DFS: ref_flags: %d, path_consumed: %d\n",
> ref->ref_flag, ref->path_consumed);
> }
>
> diff --git a/fs/cifs/smb1ops.c b/fs/cifs/smb1ops.c
> index 32a6c020478f..52e1ae6744de 100644
> --- a/fs/cifs/smb1ops.c
> +++ b/fs/cifs/smb1ops.c
> @@ -300,7 +300,7 @@ coalesce_t2(char *second_buf, struct smb_hdr *target_hdr)
> tgt_total_cnt = get_unaligned_le16(&pSMBt->t2_rsp.TotalDataCount);
>
> if (tgt_total_cnt != src_total_cnt)
> - cifs_dbg(FYI, "total data count of primary and secondary t2 differ source=%hu target=%hu\n",
> + cifs_dbg(FYI, "total data count of primary and secondary t2 differ source=%hu target=%u\n",
> src_total_cnt, tgt_total_cnt);

This one is not correct; while you'd be forgiven for confusing the
case here `tgt_total_cnt` with `total_in_tgt` below, the above hunk is
not correct. `tgt_total_cnt` is an instance of a `__u16`. Please
resend with this hunk dropped. The other hunks look correct.

>
> total_in_tgt = get_unaligned_le16(&pSMBt->t2_rsp.DataCount);
> @@ -308,7 +308,7 @@ coalesce_t2(char *second_buf, struct smb_hdr *target_hdr)
> remaining = tgt_total_cnt - total_in_tgt;
>
> if (remaining < 0) {
> - cifs_dbg(FYI, "Server sent too much data. tgt_total_cnt=%hu total_in_tgt=%hu\n",
> + cifs_dbg(FYI, "Server sent too much data. tgt_total_cnt=%hu total_in_tgt=%u\n",
> tgt_total_cnt, total_in_tgt);
> return -EPROTO;
> }
> --
> 2.20.1
>


--
Thanks,
~Nick Desaulniers

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