On Sun, Dec 1, 2024 at 4:27 PM Shigeru Yoshida <syoshida@xxxxxxxxxx> wrote: > > KMSAN reported a use-after-free issue in eth_skb_pkt_type()[1]. The > cause of the issue was that eth_skb_pkt_type() accessed skb's data > that didn't contain an Ethernet header. This occurs when > bpf_prog_test_run_xdp() passes an invalid value as the user_data > argument to bpf_test_init(). Hi Shigeru, Thanks for taking care of this! Am I understanding right that this bug was reported by your own syzkaller instance? Otherwise, if the report originates from syzkaller.appspot.com, could you please append the bug hash to the Reported-by: tag?