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[ Upstream commit fce672db548ff19e76a08a32a829544617229bc2 ]
The function batadv_bla_backbone_dump_bucket must be able to handle
non-complete dumps of a single bucket. It tries to do that by saving the
latest dumped index in *idx_skip to inform the caller about the current
state.
But the caller only assumes that buckets were not completely dumped when
the return code is non-zero. This function must therefore also return a
non-zero index when the dumping of an entry failed. Otherwise the caller
will just skip all remaining buckets.
And the function must also reset *idx_skip back to zero when it finished a
bucket. Otherwise it will skip the same number of entries in the next
bucket as the previous one had.
Fixes: ea4152e11716 ("batman-adv: add backbone table netlink support")
Reported-by: Linus Lüssing <linus.luessing@c0d3.blue>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
588078bb27