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| author |   Thorsten Blum <thorsten.blum@toblux.com> | 2024-08-08 17:00:24 +0200 |
|---|---|---|
| committer |   Christian Brauner <brauner@kernel.org> | 2024-08-30 08:22:35 +0200 |
| commit | 193b72792fdba54aa2af6c3ad72ce16c3f06b4f7 (patch) | |
| tree | 76257d101ea7bd554673a26b5596c65bfcd03476 | |
| parent | fs: rearrange general fastpath check now that O_CREAT uses it (diff) | |
| download | wireguard-linux-193b72792fdba54aa2af6c3ad72ce16c3f06b4f7.tar.xz wireguard-linux-193b72792fdba54aa2af6c3ad72ce16c3f06b4f7.zip | |
fs/select: Annotate struct poll_list with __counted_by()
Add the __counted_by compiler attribute to the flexible array member
entries to improve access bounds-checking via CONFIG_UBSAN_BOUNDS and
CONFIG_FORTIFY_SOURCE.
Signed-off-by: Thorsten Blum <thorsten.blum@toblux.com>
Link: https://lore.kernel.org/r/20240808150023.72578-2-thorsten.blum@toblux.com
Reviewed-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to '')
| -rw-r--r-- | fs/select.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/select.c b/fs/select.c index 9515c3fa1a03..1a4849e2afb9 100644 --- a/fs/select.c +++ b/fs/select.c @@ -840,7 +840,7 @@ SYSCALL_DEFINE1(old_select, struct sel_arg_struct __user *, arg) struct poll_list { struct poll_list *next; unsigned int len; - struct pollfd entries[]; + struct pollfd entries[] __counted_by(len); }; #define POLLFD_PER_PAGE ((PAGE_SIZE-sizeof(struct poll_list)) / sizeof(struct pollfd)) |