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| author | Amit Shah <amit.shah@redhat.com> | 2013-07-29 06:46:13 +0200 |
|---|---|---|
| committer | Rusty Russell <rusty@rustcorp.com.au> | 2013-07-29 07:13:28 +0200 |
| commit | 057b82be3ca3d066478e43b162fc082930a746c9 (patch) | |
| tree | 8ca217f1b7c0e48a21540cb38779cc7a48216535 /drivers/char/scx200_gpio.c | |
| parent | virtio/console: Add pipe_lock/unlock for splice_write (diff) | |
| download | linux-057b82be3ca3d066478e43b162fc082930a746c9.tar.xz linux-057b82be3ca3d066478e43b162fc082930a746c9.zip | |
virtio: console: fix race with port unplug and open/close
There's a window between find_port_by_devt() returning a port and us
taking a kref on the port, where the port could get unplugged. Fix it
by taking the reference in find_port_by_devt() itself.
Problem reported and analyzed by Mateusz Guzik.
CC: <stable@vger.kernel.org>
Reported-by: Mateusz Guzik <mguzik@redhat.com>
Signed-off-by: Amit Shah <amit.shah@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Diffstat (limited to 'drivers/char/scx200_gpio.c')
0 files changed, 0 insertions, 0 deletions