On Tue, Jul 19, 2016 at 5:32 AM, Minfei Huang <mnfhuang@xxxxxxxxx> wrote: > From: Minfei Huang <mnghuan@xxxxxxxxx> > > We do a lot of memory allocation in function init_vq, and don't handle > the allocation failure properly. Then this function will return 0, > although initialization fails due to lacking memory. At that moment, > kernel will panic in guest machine, if virtio is used to drive disk. > > To fix this bug, we should take care of allocation failure, and return > correct value to let caller know what happen. > > Tested-by: Chao Fan <fanc.fnst@xxxxxxxxxxxxxx> > Signed-off-by: Minfei Huang <minfei.hmf@xxxxxxxxxxxxxxx> > Signed-off-by: Minfei Huang <mnghuan@xxxxxxxxx> > --- > v2: > - Remove useless initialisation to NULL > v1: > - Refactor the patch to make code more readable > --- > drivers/block/virtio_blk.c | 26 ++++++++------------------ > 1 file changed, 8 insertions(+), 18 deletions(-) Reviewed-by: Stefan Hajnoczi <stefanha@xxxxxxxxxx> _______________________________________________ Virtualization mailing list Virtualization@xxxxxxxxxxxxxxxxxxxxxxxxxx https://lists.linuxfoundation.org/mailman/listinfo/virtualization
