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RDMA/mlx4: Don't continue event handler after memory allocation failure
author
Leon Romanovsky
<leonro@nvidia.com>
Mon, 31 Jan 2022 09:45:26 +0000
(11:45 +0200)
committer
Greg Kroah-Hartman
<gregkh@linuxfoundation.org>
Tue, 8 Feb 2022 17:34:07 +0000
(18:34 +0100)
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/12a0e83f18cfad4b5f62654f141e240d04915e10.1643622264.git.leonro@nvidia.com
Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
Reviewed-by: HÃ¥kon 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
patch
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diff --git
a/drivers/infiniband/hw/mlx4/main.c
b/drivers/infiniband/hw/mlx4/main.c
index
aec2e18
..
53d8321
100644
(file)
--- 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_dev *dev, void *ibdev_ptr,
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);