From: Miguel Ojeda ojeda@kernel.org
maillist inclusion category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I5J75G CVE: NA
Reference: https://lore.kernel.org/rust-for-linux/CANiq72nDcJLSB3pLhkdqGdLitfmqqCUVVfkY...
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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'
With this change, we introduce an error message with further explanation:
ERROR: '%pA' is only intended to be used from Rust code
Suggested-by: Kees Cook keescook@chromium.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 Signed-off-by: Miguel Ojeda ojeda@kernel.org Signed-off-by: Weilong Chen chenweilong@huawei.com --- scripts/checkpatch.pl | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl index 0ad235ee96f9..0fcfb21cca0d 100755 --- a/scripts/checkpatch.pl +++ b/scripts/checkpatch.pl @@ -6312,6 +6312,10 @@ sub process { my $stat_real = get_stat_real($linenr, $lc); my $ext_type = "Invalid"; my $use = ""; + if ($bad_specifier =~ /pA/) { + ERROR("VSPRINTF_RUST", + "'%pA' is only intended to be used from Rust code\n" . "$here\n$stat_real\n"); + } if ($bad_specifier =~ /p[Ff]/) { $use = " - use %pS instead"; $use =~ s/pS/ps/ if ($bad_specifier =~ /pf/);