Re: [PATCH net] phonet: properly unshare skbs in phonet_rcv()
From: David Miller <davem@davemloft.net>
Date: 2016-01-12 20:47:22
Also in:
linux-omap, lkml
From: Eric Dumazet <redacted> Date: Tue, 12 Jan 2016 08:58:00 -0800
From: Eric Dumazet <edumazet@google.com>
Ivaylo Dimitrov reported a regression caused by commit 7866a621043f
("dev: add per net_device packet type chains").
skb->dev becomes NULL and we crash in __netif_receive_skb_core().
Before above commit, different kind of bugs or corruptions could happen
without major crash.
But the root cause is that phonet_rcv() can queue skb without checking
if skb is shared or not.
Many thanks to Ivaylo Dimitrov for his help, diagnosis and tests.
Reported-by: Ivaylo Dimitrov <redacted>
Tested-by: Ivaylo Dimitrov <redacted>
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Remi Denis-Courmont <courmisch@gmail.com>Applied and queued up for -stable, th anks Eric.