Commit 2572c7fb authored by Sudip Mukherjee's avatar Sudip Mukherjee Committed by Jon Mason

ntb: fix possible NULL dereference

kmalloc can fail and we should check for NULL before using the pointer
returned by kmalloc.
Signed-off-by: default avatarSudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Acked-by: default avatarDave Jiang <dave.jiang@intel.com>
Signed-off-by: default avatarJon Mason <jdmason@kudzu.us>
parent ee5f750f
...@@ -550,6 +550,8 @@ static ssize_t debugfs_run_read(struct file *filp, char __user *ubuf, ...@@ -550,6 +550,8 @@ static ssize_t debugfs_run_read(struct file *filp, char __user *ubuf,
return 0; return 0;
buf = kmalloc(64, GFP_KERNEL); buf = kmalloc(64, GFP_KERNEL);
if (!buf)
return -ENOMEM;
out_offset = snprintf(buf, 64, "%d\n", perf->run); out_offset = snprintf(buf, 64, "%d\n", perf->run);
ret = simple_read_from_buffer(ubuf, count, offp, buf, out_offset); ret = simple_read_from_buffer(ubuf, count, offp, buf, out_offset);
kfree(buf); kfree(buf);
......
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