diff options
| author | Wei Yongjun <weiyongjun1@huawei.com> | 2021-03-24 14:42:20 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2021-03-24 16:26:58 -0700 |
| commit | 20fd4f421cf4c21ab37a8bf31db50c69f1b49355 (patch) | |
| tree | 2a962f1200f5d0bc2838137e9c82bc6f91eee6a2 /drivers/net/netdevsim/health.c | |
| parent | c3dde0ee7163856bf295fdbc09205b61581a7f92 (diff) | |
netdevsim: switch to memdup_user_nul()
Use memdup_user_nul() helper instead of open-coding to
simplify the code.
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Reviewed-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/netdevsim/health.c')
| -rw-r--r-- | drivers/net/netdevsim/health.c | 11 |
1 files changed, 3 insertions, 8 deletions
diff --git a/drivers/net/netdevsim/health.c b/drivers/net/netdevsim/health.c index 21e2974660e7..04aebdf85747 100644 --- a/drivers/net/netdevsim/health.c +++ b/drivers/net/netdevsim/health.c @@ -235,15 +235,10 @@ static ssize_t nsim_dev_health_break_write(struct file *file, char *break_msg; int err; - break_msg = kmalloc(count + 1, GFP_KERNEL); - if (!break_msg) - return -ENOMEM; + break_msg = memdup_user_nul(data, count); + if (IS_ERR(break_msg)) + return PTR_ERR(break_msg); - if (copy_from_user(break_msg, data, count)) { - err = -EFAULT; - goto out; - } - break_msg[count] = '\0'; if (break_msg[count - 1] == '\n') break_msg[count - 1] = '\0'; |