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Free mbuf chain when m_dup fails

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Fix memory leak where mbuf chain wasn't free()d if iflib_ether_pad()
has a failure in m_dup().

Reported by:	"Ryan Stone" <rysto32@gmail.com>
Sponsored by:	Limelight Networks
This commit is contained in:
Stephen Hurd 2017-12-08 19:50:06 +00:00
parent 97cb52fa9a
commit 04993890dc
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=326706
1 changed files with 1 additions and 0 deletions
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sys/net/iflib.c
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@ -3125,6 +3125,7 @@ iflib_ether_pad(device_t dev, struct mbuf **m_head, uint16_t min_frame_size)
if (!M_WRITABLE(*m_head)) {
new_head = m_dup(*m_head, M_NOWAIT);
if (new_head == NULL) {
m_freem(*m_head);
device_printf(dev, "cannot pad short frame, m_dup() failed");
return ENOMEM;
}