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| author | Linus Walleij <linus.walleij@linaro.org> | 2019-09-05 11:40:54 +0200 |
|---|---|---|
| committer | Linus Walleij <linus.walleij@linaro.org> | 2019-09-05 11:40:54 +0200 |
| commit | 151a41014bff92f353263cadc051435dc9c3258e (patch) | |
| tree | aa082a0745edd5b7051668f455dfc0ee1e4a9de0 /drivers/infiniband/core/user_mad.c | |
| parent | ae0755b56da9db4190288155ea884331993ed51b (diff) | |
| parent | 089cf7f6ecb266b6a4164919a2e69bd2f938374a (diff) | |
Merge tag 'v5.3-rc7' into devel
Linux 5.3-rc7
Diffstat (limited to 'drivers/infiniband/core/user_mad.c')
| -rw-r--r-- | drivers/infiniband/core/user_mad.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/infiniband/core/user_mad.c b/drivers/infiniband/core/user_mad.c index 9f8a48016b41..ffdeaf6e0b68 100644 --- a/drivers/infiniband/core/user_mad.c +++ b/drivers/infiniband/core/user_mad.c @@ -49,6 +49,7 @@ #include <linux/sched.h> #include <linux/semaphore.h> #include <linux/slab.h> +#include <linux/nospec.h> #include <linux/uaccess.h> @@ -884,11 +885,14 @@ static int ib_umad_unreg_agent(struct ib_umad_file *file, u32 __user *arg) if (get_user(id, arg)) return -EFAULT; + if (id >= IB_UMAD_MAX_AGENTS) + return -EINVAL; mutex_lock(&file->port->file_mutex); mutex_lock(&file->mutex); - if (id >= IB_UMAD_MAX_AGENTS || !__get_agent(file, id)) { + id = array_index_nospec(id, IB_UMAD_MAX_AGENTS); + if (!__get_agent(file, id)) { ret = -EINVAL; goto out; } |