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| author | Jason Andryuk <jandryuk@gmail.com> | 2018-02-28 07:23:23 -0500 |
|---|---|---|
| committer | Juergen Gross <jgross@suse.com> | 2018-02-28 20:20:08 +0100 |
| commit | c2d2e6738a209f0f9dffa2dc8e7292fc45360d61 (patch) | |
| tree | ce54a6673f4658e1323614888b55596e4ec0459a /arch/x86/xen | |
| parent | 910f8befdf5bccf25287d9f1743e3e546bcb7ce0 (diff) | |
xen-netfront: Fix hang on device removal
A toolstack may delete the vif frontend and backend xenstore entries
while xen-netfront is in the removal code path. In that case, the
checks for xenbus_read_driver_state would return XenbusStateUnknown, and
xennet_remove would hang indefinitely. This hang prevents system
shutdown.
xennet_remove must be able to handle XenbusStateUnknown, and
netback_changed must also wake up the wake_queue for that state as well.
Fixes: 5b5971df3bc2 ("xen-netfront: remove warning when unloading module")
Signed-off-by: Jason Andryuk <jandryuk@gmail.com>
Cc: Eduardo Otubo <otubo@redhat.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Diffstat (limited to 'arch/x86/xen')
0 files changed, 0 insertions, 0 deletions