From: Leon Romanovsky leonro@nvidia.com
commit f3136c4ce7acf64bee43135971ca52a880572e32 upstream.
The failure to allocate memory during MLX4_DEV_EVENT_PORT_MGMT_CHANGE event handler will cause skip the assignment logic, but ib_dispatch_event() will be called anyway.
Fix it by calling to return instead of break after memory allocation failure.
Fixes: 00f5ce99dc6e ("mlx4: Use port management change event instead of smp_snoop") Link: https://lore.kernel.org/r/12a0e83f18cfad4b5f62654f141e240d04915e10.164362226... Signed-off-by: Leon Romanovsky leonro@nvidia.com Reviewed-by: Håkon Bugge haakon.bugge@oracle.com Signed-off-by: Jason Gunthorpe jgg@nvidia.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/infiniband/hw/mlx4/main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/infiniband/hw/mlx4/main.c +++ b/drivers/infiniband/hw/mlx4/main.c @@ -3249,7 +3249,7 @@ static void mlx4_ib_event(struct mlx4_de case MLX4_DEV_EVENT_PORT_MGMT_CHANGE: ew = kmalloc(sizeof *ew, GFP_ATOMIC); if (!ew) - break; + return;
INIT_WORK(&ew->work, handle_port_mgmt_change_event); memcpy(&ew->ib_eqe, eqe, sizeof *eqe);