diff options
| author | Jens Axboe <axboe@kernel.dk> | 2024-01-16 17:08:32 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2024-01-17 09:45:18 -0700 |
| commit | baf59771343dc0c2ef9ac3189bf9df2d6143654f (patch) | |
| tree | 4380db120e3092006e5a8df88a6a14baf4dc6e7e /io_uring | |
| parent | 3f302388d45855c0b24802e7b414e3fb29f172e3 (diff) | |
| download | linux-baf59771343dc0c2ef9ac3189bf9df2d6143654f.tar.gz | |
io_uring/register: guard compat syscall with CONFIG_COMPAT
Add compat.h include to avoid a potential build issue:
io_uring/register.c:281:6: error: call to undeclared function 'in_compat_syscall'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration]
if (in_compat_syscall()) {
^
1 warning generated.
io_uring/register.c:282:9: error: call to undeclared function 'compat_get_bitmap'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration]
ret = compat_get_bitmap(cpumask_bits(new_mask),
^
Fixes: c43203154d8a ("io_uring/register: move io_uring_register(2) related code to register.c")
Reported-by: Manu Bretelle <chantra@meta.com>
Reviewed-by: Jeff Moyer <jmoyer@redhat.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'io_uring')
| -rw-r--r-- | io_uring/register.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/io_uring/register.c b/io_uring/register.c index 708dd1d89add4a..5e62c120899654 100644 --- a/io_uring/register.c +++ b/io_uring/register.c @@ -14,6 +14,7 @@ #include <linux/slab.h> #include <linux/uaccess.h> #include <linux/nospec.h> +#include <linux/compat.h> #include <linux/io_uring.h> #include <linux/io_uring_types.h> @@ -278,13 +279,14 @@ static __cold int io_register_iowq_aff(struct io_ring_ctx *ctx, if (len > cpumask_size()) len = cpumask_size(); - if (in_compat_syscall()) { +#ifdef CONFIG_COMPAT + if (in_compat_syscall()) ret = compat_get_bitmap(cpumask_bits(new_mask), (const compat_ulong_t __user *)arg, len * 8 /* CHAR_BIT */); - } else { + else +#endif ret = copy_from_user(new_mask, arg, len); - } if (ret) { free_cpumask_var(new_mask); |