net: mvpp2: fix the txq_init error path

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When an allocation in the txq_init path fails, the allocated buffers
end-up being freed twice: in the txq_init error path, and in txq_deinit.
This lead to issues as txq_deinit would work on already freed memory
regions:

    kernel BUG at mm/slub.c:3915!
    Internal error: Oops - BUG: 0 [#1] PREEMPT SMP

This patch fixes this by removing the txq_init own error path, as the
txq_deinit function is always called on errors. This was introduced by
TSO as way more buffers are allocated.

Fixes: 186cd4d4e4 ("net: mvpp2: software tso support")
Signed-off-by: Antoine Tenart <antoine.tenart@free-electrons.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

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Antoine Tenart 2017-11-28 14:19:48 +01:00 • committed by David S. Miller

parent e2549970f4

commit ba2d8d887d

1 changed files with 2 additions and 18 deletions

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20

drivers/net/ethernet/marvell/mvpp2.c

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