diff options
| author |   Maor Gottlieb <maorg@mellanox.com> | 2017-03-29 06:03:03 +0300 |
|---|---|---|
| committer |   Doug Ledford <dledford@redhat.com> | 2017-04-21 12:26:05 -0400 |
| commit | 1377661298d2820d675553d186c31b6f46c140d0 (patch) | |
| tree | 599abf0b04918a4a1877eae760768f12807e2d4e /drivers/infiniband/hw | |
| parent | IB/mlx5: Take write semaphore when changing the vma struct (diff) | |
| download | linux-dev-1377661298d2820d675553d186c31b6f46c140d0.tar.xz linux-dev-1377661298d2820d675553d186c31b6f46c140d0.zip | |
IB/mlx5: Change vma from shared to private
Anonymous VMA (->vm_ops == NULL) cannot be shared, otherwise
it would lead to SIGBUS.
Remove the shared flags from the vma after we change it to be
anonymous.
This is easily reproduced by doing modprobe -r while running a
user-space application such as raw_ethernet_bw.
Fixes: 7c2344c3bbf97 ('IB/mlx5: Implements disassociate_ucontext API')
Signed-off-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers/infiniband/hw')
| -rw-r--r-- | drivers/infiniband/hw/mlx5/main.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/mlx5/main.c b/drivers/infiniband/hw/mlx5/main.c index 88070a7cde48..3ecb3c3f6ed2 100644 --- a/drivers/infiniband/hw/mlx5/main.c +++ b/drivers/infiniband/hw/mlx5/main.c @@ -1488,6 +1488,7 @@ static void mlx5_ib_disassociate_ucontext(struct ib_ucontext *ibcontext) /* context going to be destroyed, should * not access ops any more. */ + vma->vm_flags &= ~(VM_SHARED | VM_MAYSHARE); vma->vm_ops = NULL; list_del(&vma_private->list); kfree(vma_private); |