From: Bill Wendling <morbo@google.com>
To: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>,
Kees Cook <keescook@chromium.org>,
"Gustavo A . R . Silva" <gustavoars@kernel.org>,
Nathan Chancellor <nathan@kernel.org>,
Nick Desaulniers <ndesaulniers@google.com>,
Justin Stitt <justinstitt@google.com>,
LKML <linux-kernel@vger.kernel.org>,
linux-hardening@vger.kernel.org,
clang-built-linux <llvm@lists.linux.dev>
Subject: [PATCH] hpfs: Annotate struct hpfs_dirent with __counted_by
Date: Mon, 13 May 2024 16:45:54 -0700 [thread overview]
Message-ID: <CAGG=3QW4b9mqh9oGQ16NmMGbo4HVHmdM00Be1Qk97StCpW4xTA@mail.gmail.com> (raw)
Prepare for the coming implementation by GCC and Clang of the
__counted_by attribute. Flexible array members annotated with
__counted_by can have their accesses bounds-checked at run-time checking
via CONFIG_UBSAN_BOUNDS (for array indexing) and CONFIG_FORTIFY_SOURCE
(for strcpy/memcpy-family functions).
Cc: Mikulas Patocka <mikulas@artax.karlin.mff.cuni.cz>
Cc: Kees Cook <keescook@chromium.org>
Cc: "Gustavo A. R. Silva" <gustavoars@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nick Desaulniers <ndesaulniers@google.com>
Cc: Justin Stitt <justinstitt@google.com>
Cc: linux-kernel@vger.kernel.org
Cc: linux-hardening@vger.kernel.org
Cc: llvm@lists.linux.dev
Signed-off-by: Bill Wendling <morbo@google.com>
---
fs/hpfs/hpfs.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/hpfs/hpfs.h b/fs/hpfs/hpfs.h
index 281dec8f636b..ac137787f1f9 100644
--- a/fs/hpfs/hpfs.h
+++ b/fs/hpfs/hpfs.h
@@ -357,7 +357,7 @@ struct hpfs_dirent {
u8 ix; /* code page index (of filename), see
struct code_page_data */
u8 namelen; /* file name length */
- u8 name[]; /* file name */
+ u8 name[] __counted_by(namelen); /* file name */
/* dnode_secno down; btree down pointer, if present,
follows name on next word boundary, or maybe it
precedes next dirent, which is on a word boundary. */
--
2.45.0.rc1.225.g2a3ae87e7f-goog
next reply other threads:[~2024-05-13 23:46 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-13 23:45 Bill Wendling [this message]
2024-05-14 1:29 ` [PATCH] hpfs: Annotate struct hpfs_dirent with __counted_by Kees Cook
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to='CAGG=3QW4b9mqh9oGQ16NmMGbo4HVHmdM00Be1Qk97StCpW4xTA@mail.gmail.com' \
--to=morbo@google.com \
--cc=gustavoars@kernel.org \
--cc=justinstitt@google.com \
--cc=keescook@chromium.org \
--cc=linux-hardening@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=llvm@lists.linux.dev \
--cc=mikulas@artax.karlin.mff.cuni.cz \
--cc=nathan@kernel.org \
--cc=ndesaulniers@google.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).