Hi Dan, > smatch warnings: > net/mctp/test/utils.c:15 mctp_test_dev_tx() error: use kfree_skb() here instead of kfree(skb) Thanks for the report! I've sent a fix, you're CCed. However, I can 't seem to recreate the smatch warning; could you include the build command you're using for these? I've tried with make [...] C=1 CHECK=/path/to/smatch using smatch 4f2585888, but that doesn't report the error you've listed there. Do I need any specific CHECKFLAGS? Cheers, Jeremy