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| author | Jason Wang <jasowang@redhat.com> | 2018-03-29 16:00:04 +0800 |
|---|---|---|
| committer | Alistair Strachan <astrachan@google.com> | 2019-01-15 17:08:37 -0800 |
| commit | 167925fc0eff8e96b3387741bad23ce080b50a84 (patch) | |
| tree | 0ee0e07fd8d00f8281e0139701889d62e9c6551d /include/linux/timerqueue.h | |
| parent | 579cd6fe1e70cdba651eeac567df3ad0dc2272ad (diff) | |
UPSTREAM: vhost: validate log when IOTLB is enabled
[ Upstream commit d65026c6c62e7d9616c8ceb5a53b68bcdc050525 ]
Vq log_base is the userspace address of bitmap which has nothing to do
with IOTLB. So it needs to be validated unconditionally otherwise we
may try use 0 as log_base which may lead to pin pages that will lead
unexpected result (e.g trigger BUG_ON() in set_bit_to_user()).
Fixes: 6b1e6cc7855b0 ("vhost: new device IOTLB API")
Reported-by: syzbot+6304bf97ef436580fede@syzkaller.appspotmail.com
Signed-off-by: Jason Wang <jasowang@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 992dbb1d5a653c49a7f2159f75d9cda0d8248f1f)
Bug: 121166534
Test: Ran cuttlefish with android-4.4 + VSOCKETS, VMWARE_VMCI_VSOCKETS
Signed-off-by: Alistair Strachan <astrachan@google.com>
Change-Id: I64ef687ec8f55800ce300d0a0eac5473853bf6fd
Diffstat (limited to 'include/linux/timerqueue.h')
0 files changed, 0 insertions, 0 deletions