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authorMiguel Ojeda <ojeda@kernel.org>2022-05-22 03:11:08 +0200
committerMiguel Ojeda <ojeda@kernel.org>2022-09-28 09:00:58 +0200
commitde48fa1a01e7752135c960a20d6c3b26544a8120 (patch)
tree124e6b0166ebb4cc590ec7170eb79de11bd3f4d0 /scripts/checkpatch.pl
parent787983da77185d355564b0436f7b4eaa40b8904b (diff)
scripts: checkpatch: diagnose uses of `%pA` in the C side as errors
The `%pA` format specifier is only intended to be used from Rust. `checkpatch.pl` already gives a warning for invalid specificers: WARNING: Invalid vsprintf pointer extension '%pA' This makes it an error and introduces an explanatory message: ERROR: Invalid vsprintf pointer extension '%pA' - '%pA' is only intended to be used from Rust code Suggested-by: Kees Cook <keescook@chromium.org> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Co-developed-by: Alex Gaynor <alex.gaynor@gmail.com> Signed-off-by: Alex Gaynor <alex.gaynor@gmail.com> Co-developed-by: Wedson Almeida Filho <wedsonaf@google.com> Signed-off-by: Wedson Almeida Filho <wedsonaf@google.com> Co-developed-by: Joe Perches <joe@perches.com> Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
Diffstat (limited to 'scripts/checkpatch.pl')
-rwxr-xr-xscripts/checkpatch.pl8
1 files changed, 6 insertions, 2 deletions
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 79e759aac543..74a769310adf 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -6783,15 +6783,19 @@ sub process {
}
if ($bad_specifier ne "") {
my $stat_real = get_stat_real($linenr, $lc);
+ my $msg_level = \&WARN;
my $ext_type = "Invalid";
my $use = "";
if ($bad_specifier =~ /p[Ff]/) {
$use = " - use %pS instead";
$use =~ s/pS/ps/ if ($bad_specifier =~ /pf/);
+ } elsif ($bad_specifier =~ /pA/) {
+ $use = " - '%pA' is only intended to be used from Rust code";
+ $msg_level = \&ERROR;
}
- WARN("VSPRINTF_POINTER_EXTENSION",
- "$ext_type vsprintf pointer extension '$bad_specifier'$use\n" . "$here\n$stat_real\n");
+ &{$msg_level}("VSPRINTF_POINTER_EXTENSION",
+ "$ext_type vsprintf pointer extension '$bad_specifier'$use\n" . "$here\n$stat_real\n");
}
}
}