From: Ido Schimmel idosch@nvidia.com
[ Upstream commit adc80b6cfedff6dad8b93d46a5ea2775fd5af9ec ]
Free the devlink instance during the teardown sequence in the non-reload case to avoid the following memory leak.
unreferenced object 0xffff888232895000 (size 2048): comm "modprobe", pid 1073, jiffies 4295568857 (age 164.871s) hex dump (first 32 bytes): 00 01 00 00 00 00 ad de 22 01 00 00 00 00 ad de ........"....... 10 50 89 32 82 88 ff ff 10 50 89 32 82 88 ff ff .P.2.....P.2.... backtrace: [<00000000c704e9a6>] __kmalloc+0x13a/0x2a0 [<00000000ee30129d>] devlink_alloc+0xff/0x760 [<0000000092ab3e5d>] 0xffffffffa042e5b0 [<000000004f3f8a31>] 0xffffffffa042f6ad [<0000000092800b4b>] 0xffffffffa0491df3 [<00000000c4843903>] local_pci_probe+0xcb/0x170 [<000000006993ded7>] pci_device_probe+0x2c2/0x4e0 [<00000000a8e0de75>] really_probe+0x2c5/0xf90 [<00000000d42ba75d>] driver_probe_device+0x1eb/0x340 [<00000000bcc95e05>] device_driver_attach+0x294/0x300 [<000000000e2bc177>] __driver_attach+0x167/0x2f0 [<000000007d44cd6e>] bus_for_each_dev+0x148/0x1f0 [<000000003cd5a91e>] driver_attach+0x45/0x60 [<000000000041ce51>] bus_add_driver+0x3b8/0x720 [<00000000f5215476>] driver_register+0x230/0x4e0 [<00000000d79356f5>] __pci_register_driver+0x190/0x200
Fixes: a22712a96291 ("mlxsw: core: Fix devlink unregister flow") Signed-off-by: Ido Schimmel idosch@nvidia.com Reported-by: Vadim Pasternak vadimp@nvidia.com Tested-by: Oleksandr Shamray oleksandrs@nvidia.com Signed-off-by: Jakub Kicinski kuba@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/net/ethernet/mellanox/mlxsw/core.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/drivers/net/ethernet/mellanox/mlxsw/core.c +++ b/drivers/net/ethernet/mellanox/mlxsw/core.c @@ -1483,6 +1483,8 @@ void mlxsw_core_bus_device_unregister(st if (!reload) devlink_resources_unregister(devlink, NULL); mlxsw_core->bus->fini(mlxsw_core->bus_priv); + if (!reload) + devlink_free(devlink);
return;