diff mbox series

[net-next] mlxsw: fix devlink use after frees

Message ID YtpEiJz26qVoZG8s@kili (mailing list archive)
State Not Applicable
Delegated to: Netdev Maintainers
Headers show
Series [net-next] mlxsw: fix devlink use after frees | expand

Checks

Context Check Description
netdev/tree_selection success Clearly marked for net-next
netdev/fixes_present success Fixes tag not required for -next series
netdev/subject_prefix success Link
netdev/cover_letter success Single patches do not need cover letters
netdev/patch_count success Link
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 0 this patch: 0
netdev/cc_maintainers success CCed 8 of 8 maintainers
netdev/build_clang success Errors and warnings before: 0 this patch: 0
netdev/module_param success Was 0 now: 0
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success Fixes tag looks correct
netdev/build_allmodconfig_warn success Errors and warnings before: 0 this patch: 0
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 18 lines checked
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0

Commit Message

Dan Carpenter July 22, 2022, 6:32 a.m. UTC
Unlock "devlink" before freeing it instead of after.

Fixes: 72a4c8c94efa ("mlxsw: convert driver to use unlocked devlink API during init/fini")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
 drivers/net/ethernet/mellanox/mlxsw/core.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

Comments

Ido Schimmel July 22, 2022, 9:36 a.m. UTC | #1
On Fri, Jul 22, 2022 at 09:32:40AM +0300, Dan Carpenter wrote:
> Unlock "devlink" before freeing it instead of after.
> 
> Fixes: 72a4c8c94efa ("mlxsw: convert driver to use unlocked devlink API during init/fini")
> Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>

Thanks for the patch, but a fix was already posted yesterday:

https://patchwork.kernel.org/project/netdevbpf/patch/20220721142424.3975704-1-jiri@resnulli.us/
diff mbox series

Patch

diff --git a/drivers/net/ethernet/mellanox/mlxsw/core.c b/drivers/net/ethernet/mellanox/mlxsw/core.c
index 61eb96b93889..1b61bc8f59a2 100644
--- a/drivers/net/ethernet/mellanox/mlxsw/core.c
+++ b/drivers/net/ethernet/mellanox/mlxsw/core.c
@@ -2296,8 +2296,8 @@  void mlxsw_core_bus_device_unregister(struct mlxsw_core *mlxsw_core,
 		devl_resources_unregister(devlink);
 	mlxsw_core->bus->fini(mlxsw_core->bus_priv);
 	if (!reload) {
-		devlink_free(devlink);
 		devl_unlock(devlink);
+		devlink_free(devlink);
 	}
 
 	return;
@@ -2305,8 +2305,8 @@  void mlxsw_core_bus_device_unregister(struct mlxsw_core *mlxsw_core,
 reload_fail_deinit:
 	mlxsw_core_params_unregister(mlxsw_core);
 	devl_resources_unregister(devlink);
-	devlink_free(devlink);
 	devl_unlock(devlink);
+	devlink_free(devlink);
 }
 EXPORT_SYMBOL(mlxsw_core_bus_device_unregister);