diff options
Diffstat (limited to 'io_uring/memmap.c')
| -rw-r--r-- | io_uring/memmap.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/io_uring/memmap.c b/io_uring/memmap.c index d614824e17bd..85c66fa54956 100644 --- a/io_uring/memmap.c +++ b/io_uring/memmap.c @@ -251,6 +251,8 @@ __cold int io_uring_mmap(struct file *file, struct vm_area_struct *vma) unsigned int npages; void *ptr; + guard(mutex)(&ctx->resize_lock); + ptr = io_uring_validate_mmap_request(file, vma->vm_pgoff, sz); if (IS_ERR(ptr)) return PTR_ERR(ptr); @@ -274,6 +276,7 @@ unsigned long io_uring_get_unmapped_area(struct file *filp, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags) { + struct io_ring_ctx *ctx = filp->private_data; void *ptr; /* @@ -284,6 +287,8 @@ unsigned long io_uring_get_unmapped_area(struct file *filp, unsigned long addr, if (addr) return -EINVAL; + guard(mutex)(&ctx->resize_lock); + ptr = io_uring_validate_mmap_request(filp, pgoff, len); if (IS_ERR(ptr)) return -ENOMEM; @@ -329,8 +334,11 @@ unsigned long io_uring_get_unmapped_area(struct file *file, unsigned long addr, unsigned long len, unsigned long pgoff, unsigned long flags) { + struct io_ring_ctx *ctx = file->private_data; void *ptr; + guard(mutex)(&ctx->resize_lock); + ptr = io_uring_validate_mmap_request(file, pgoff, len); if (IS_ERR(ptr)) return PTR_ERR(ptr); |