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authorBernd Edlinger <bernd.edlinger@hotmail.de>2017-10-21 06:51:30 +0000
committerDavid S. Miller <davem@davemloft.net>2017-10-22 03:24:43 +0100
commit8d5f4b07174976c55a5f5d6967777373c6826944 (patch)
tree469d91c7c5ee7bf8343f193c6abf152d4a75de73 /samples
parent864e2a1f8aac05effac6063ce316b480facb46ff (diff)
stmmac: Don't access tx_q->dirty_tx before netif_tx_lock
This is the possible reason for different hard to reproduce problems on my ARMv7-SMP test system. The symptoms are in recent kernels imprecise external aborts, and in older kernels various kinds of network stalls and unexpected page allocation failures. My testing indicates that the trouble started between v4.5 and v4.6 and prevails up to v4.14. Using the dirty_tx before acquiring the spin lock is clearly wrong and was first introduced with v4.6. Fixes: e3ad57c96715 ("stmmac: review RX/TX ring management") Signed-off-by: Bernd Edlinger <bernd.edlinger@hotmail.de> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'samples')
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