On Sun, Jun 07, 2020 at 04:34:25PM -0400, Paul Gortmaker wrote: > I happened to notice this commit: > > 9ca415399dae - "net/mlx5: Annotate mutex destroy for root ns" > > ...was backported to 4.19 and 5.4 and v5.6 in linux-stable. > > It patches del_sw_root_ns() - which only exists after v5.7-rc7 from: > > 6eb7a268a99b - "net/mlx5: Don't maintain a case of del_sw_func being > null" > > which creates the one line del_sw_root_ns stub function around > kfree(node) by breaking it out of tree_put_node(). > > In the absense of del_sw_root_ns - the backport finds an identical one > line kfree stub fcn - named del_sw_prio from this earlier commit: > > 139ed6c6c46a - "net/mlx5: Fix steering memory leak" [in v4.15-rc5] > > and then puts the mutex_destroy() into that (wrong) function, instead of > putting it into tree_put_node where the root ns case used to be handled. Ugh, good catch. I'll go revert this from everywhere. If you could, can you provide a working backport? thanks, greg k-h