linux_dsm_epyc7002/drivers/net/ethernet/mellanox
Jiri Pirko 0f2d2b2736 mlxsw: spectrum_router: Fix error path in mlxsw_sp_vr_create
Since mlxsw_sp_fib_create() and mlxsw_sp_mr_table_create()
use ERR_PTR macro to propagate int err through return of a pointer,
the return value is not NULL in case of failure. So if one
of the calls fails, one of vr->fib4, vr->fib6 or vr->mr4_table
is not NULL and mlxsw_sp_vr_is_used wrongly assumes
that vr is in use which leads to crash like following one:

[ 1293.949291] BUG: unable to handle kernel NULL pointer dereference at 00000000000006c9
[ 1293.952729] IP: mlxsw_sp_mr_table_flush+0x15/0x70 [mlxsw_spectrum]

Fix this by using local variables to hold the pointers and set vr->*
only in case everything went fine.

Fixes: 76610ebbde ("mlxsw: spectrum_router: Refactor virtual router handling")
Fixes: a3d9bc506d ("mlxsw: spectrum_router: Extend virtual routers with IPv6 support")
Fixes: d42b0965b1 ("mlxsw: spectrum_router: Add multicast routes notification handling functionality")
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Reviewed-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-02-13 12:22:29 -05:00
..
mlx4 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2018-01-31 14:31:10 -08:00
mlx5/core Second pull request for 4.16 merge window 2018-02-06 11:09:45 -08:00
mlxfw net/mlxfw: Properly handle dependancy with non-loadable mlx5 2017-07-03 02:32:25 -07:00
mlxsw mlxsw: spectrum_router: Fix error path in mlxsw_sp_vr_create 2018-02-13 12:22:29 -05:00
Kconfig Change Kconfig description 2017-08-14 11:18:16 -07:00
Makefile Add the mlxfw module for Mellanox firmware flash process 2017-05-25 17:46:17 -04:00