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| author | Kees Cook <keescook@chromium.org> | 2023-02-04 10:33:56 -0800 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2023-06-02 10:30:09 +0200 |
| commit | 820eb59da8c7ca7e705a02f37dda2be316807847 (patch) | |
| tree | 10f2c7cf9147e8be8197a109963a9a4656fe8d44 /init | |
| parent | ea2b62f305893992156a798f665847e0663c9f41 (diff) | |
| download | linux-820eb59da8c7ca7e705a02f37dda2be316807847.tar.gz | |
jfs: Use unsigned variable for length calculations
To avoid confusing the compiler about possible negative sizes, switch
"ssize" which can never be negative from int to u32. Seen with GCC 13:
../fs/jfs/namei.c: In function 'jfs_symlink': ../include/linux/fortify-string.h:57:33: warning: '__builtin_memcpy' pointer overflow between offset 0 and size [-2147483648, -1]
[-Warray-bounds=]
57 | #define __underlying_memcpy __builtin_memcpy
| ^
...
../fs/jfs/namei.c:950:17: note: in expansion of macro 'memcpy'
950 | memcpy(ip->i_link, name, ssize);
| ^~~~~~
Cc: Dave Kleikamp <shaggy@kernel.org>
Cc: Christian Brauner <brauner@kernel.org>
Cc: Dave Chinner <dchinner@redhat.com>
Cc: jfs-discussion@lists.sourceforge.net
Signed-off-by: Kees Cook <keescook@chromium.org>
Acked-by: Jeff Xu <jeffxu@chromium.org>
Message-Id: <20230204183355.never.877-kees@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'init')
0 files changed, 0 insertions, 0 deletions