This is an update version of last version to fix the handling of polling errors in vhost/vhost_net. Currently, vhost and vhost_net ignore polling errors which can lead kernel crashing when it tries to remove itself from waitqueue after the polling failure. Fix this by checking the poll->wqh before the removing and report an error when meet polling errors. Changes from v2: - check poll->wqh instead of the wrong assumption about POLLERR and waitqueue - drop the whole tx polling state check since it was replaced by the wqh checking - drop the buggy tuntap patch Changes from v1: - restore the state before the ioctl when vhost_init_used() fails - log the error when meet polling errors in the data path - don't put into waitqueue when tun_chr_poll() return POLLERR Jason Wang (2): vhost_net: correct error handling in vhost_net_set_backend() vhost: handle polling errors drivers/vhost/net.c | 88 +++++++++++++++++++----------------------------- drivers/vhost/vhost.c | 31 +++++++++++++---- drivers/vhost/vhost.h | 2 +- 3 files changed, 59 insertions(+), 62 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
