[lvc-project] [PATCH 5.10] vxlan: Fix potential null-ptr-deref in vxlan_gro_prepare_receive().

[Новиков Артём]

Hi,

Resending in plain text because the mailing lists rejected the
HTML version of my previous reply.

This is a stable backport of Kuniyuki Iwashima's upstream commit
30a45c0bffdd62350261e2f2689fdba426a33578.

The original upstream submission does not specify how the issue
was discovered. I don't have additional information about the
original discovery method.

The backport adapts the NULL check to the older vxlan_gro_receive()
implementation in 5.10. The adaptation is described above my
Signed-off-by.

Best regards,
Artem Novikov
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