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ntb: fix possible NULL dereference

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kmalloc can fail and we should check for NULL before using the pointer
returned by kmalloc.

Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Acked-by: Dave Jiang <dave.jiang@intel.com>
Signed-off-by: Jon Mason <jdmason@kudzu.us>
This commit is contained in:
Sudip Mukherjee 2016-03-10 17:51:11 +05:30 committed by Jon Mason
parent ee5f750f1c
commit 2572c7fb4e
1 changed files with 2 additions and 0 deletions
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2
drivers/ntb/test/ntb_perf.c
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@ -550,6 +550,8 @@ static ssize_t debugfs_run_read(struct file *filp, char __user *ubuf,
return 0;
buf = kmalloc(64, GFP_KERNEL);
if (!buf)
return -ENOMEM;
out_offset = snprintf(buf, 64, "%d\n", perf->run);
ret = simple_read_from_buffer(ubuf, count, offp, buf, out_offset);
kfree(buf);