Re: [PATCH] 8139cp: Prevent dev_close/cp_interrupt race on MTU change
From: David Miller <davem@davemloft.net>
Date: 2012-12-19 20:40:15
From: John Greene <redacted> Date: Wed, 19 Dec 2012 14:47:48 -0500
commit: cb64edb6b89491edfdbae52ba7db9a8b8391d339 upstream
Above commit may introduce a race between cp_interrupt and dev_close
/ change MTU / dev_open up state. Changes cp_interrupt to tolerate
this. Change spin_locking in cp_interrupt to avoid possible
but unobserved race.
Reported-by: "Francois Romieu" <romieu@fr.zoreil.com>
Tested on virtual hardware, Tx MTU size up to 4096, max tx payload
was ping -s 4068 for MTU of 4096. No real hardware, need test
assist.
Signed-off-by: "John Greene" <redacted>You sent this as a "request for testing" last week, but I saw no testing on real hardware whatsoever.