diff options
| author | Ingo Molnar <mingo@kernel.org> | 2023-10-09 18:09:23 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2023-10-09 18:09:23 +0200 |
| commit | fdb8b7a1af31d69ee1c8ddc02926cb409eaaecc3 (patch) | |
| tree | 9af7010f5f93005adbf6f98c6557552b86d32697 /drivers/gpu/drm/nouveau/nouveau_drv.h | |
| parent | 0cff993e08a7578e2c1df93a95fc5059f447e7ae (diff) | |
| parent | 94f6f0550c625fab1f373bb86a6669b45e9748b3 (diff) | |
Merge tag 'v6.6-rc5' into locking/core, to pick up fixes
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_drv.h')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_drv.h | 19 |
1 files changed, 5 insertions, 14 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h index 1fe17ff95f5e..e73a233c6572 100644 --- a/drivers/gpu/drm/nouveau/nouveau_drv.h +++ b/drivers/gpu/drm/nouveau/nouveau_drv.h @@ -189,21 +189,12 @@ u_free(void *addr) static inline void * u_memcpya(uint64_t user, unsigned int nmemb, unsigned int size) { - void *mem; - void __user *userptr = (void __force __user *)(uintptr_t)user; + void __user *userptr = u64_to_user_ptr(user); + size_t bytes; - size *= nmemb; - - mem = kvmalloc(size, GFP_KERNEL); - if (!mem) - return ERR_PTR(-ENOMEM); - - if (copy_from_user(mem, userptr, size)) { - u_free(mem); - return ERR_PTR(-EFAULT); - } - - return mem; + if (unlikely(check_mul_overflow(nmemb, size, &bytes))) + return ERR_PTR(-EOVERFLOW); + return vmemdup_user(userptr, bytes); } #include <nvif/object.h> |