lkml.org 
[lkml]   [2013]   [Jan]   [6]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH V3 0/2] handle polling errors
Date
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(-)



\
 
 \ /
  Last update: 2013-01-06 09:01    [W:0.054 / U:0.208 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site