vxlan: Handle error of rtnl_register_module().

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[ Upstream commit 78b7b99183 ]

Since introduced, vxlan_vnifilter_init() has been ignoring the
returned value of rtnl_register_module(), which could fail silently.

Handling the error allows users to view a module as an all-or-nothing
thing in terms of the rtnetlink functionality.  This prevents syzkaller
from reporting spurious errors from its tests, where OOM often occurs
and module is automatically loaded.

Let's handle the errors by rtnl_register_many().

Fixes: f9c4bb0b24 ("vxlan: vni filtering support on collect metadata device")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

This commit is contained in:

Kuniyuki Iwashima 2024-10-08 11:47:33 -07:00 • committed by Greg Kroah-Hartman

parent 317c4c68ee

commit 438c8d7dfd

3 changed files with 15 additions and 12 deletions

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6

drivers/net/vxlan/vxlan_core.c

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2

drivers/net/vxlan/vxlan_private.h

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19

drivers/net/vxlan/vxlan_vnifilter.c

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