diff options
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/io_uring.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c index 6b71072f1408..a3a175965929 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -10683,7 +10683,15 @@ static int io_register_iowq_aff(struct io_ring_ctx *ctx, void __user *arg, if (len > cpumask_size()) len = cpumask_size(); - if (copy_from_user(new_mask, arg, len)) { + if (in_compat_syscall()) { + ret = compat_get_bitmap(cpumask_bits(new_mask), + (const compat_ulong_t __user *)arg, + len * 8 /* CHAR_BIT */); + } else { + ret = copy_from_user(new_mask, arg, len); + } + + if (ret) { free_cpumask_var(new_mask); return -EFAULT; } |