Just to restore a bit of faith in syzbot, I've checked 4.15-rc9 commit log and 28 out of 212 commits turn out to be fixes for bugs found by syzbot:
Alexei Starovoitov (1): bpf: fix 32-bit divide by zero Cong Wang (2): tipc: fix a memory leak in tipc_nl_node_get_link() tun: fix a memory leak for tfile->tx_array Daniel Borkmann (7): bpf: arsh is not supported in 32 bit alu thus reject it bpf, array: fix overflow in max_entries and undefined behavior in index_mask bpf: mark dst unknown on inconsistent {s, u}bounds adjustments David Ahern (1): netlink: extack needs to be reset each time through loop Eric Biggers (2): af_key: fix buffer overread in verify_address_len() af_key: fix buffer overread in parse_exthdrs() Eric Dumazet (3): bpf: fix divides by zero ipv6: ip6_make_skb() needs to clear cork.base.dst flow_dissector: properly cap thoff field Florian Westphal (2): xfrm: skip policies marked as dead while rehashing xfrm: don't call xfrm_policy_cache_flush while holding spinlock Guillaume Nault (1): ppp: unlock all_ppp_mutex before registering device Ilya Lesokhin (1): net/tls: Only attach to sockets in ESTABLISHED state Marc Kleine-Budde (2): can: af_can: can_rcv(): replace WARN_ONCE by pr_warn_once can: af_can: canfd_rcv(): replace WARN_ONCE by pr_warn_once Mike Maloney (1): ipv6: fix udpv6 sendmsg crash caused by too small MTU Sabrina Dubroca (4): xfrm: fix rcu usage in xfrm_get_type_offload Steffen Klassert (3): esp: Fix GRO when the headers not fully in the linear part of the skb. af_key: Fix memory leak in key_notify_policy. Takashi Iwai (4): ALSA: pcm: Remove yet superfluous WARN_ON() ALSA: seq: Make ioctls race-free Wei Wang (1): ipv6: don't let tb6_root node share routes with other node Xin Long (4): sctp: return error if the asoc has been peeled off in sctp_wait_for_sndbuf sctp: do not allow the v4 socket to bind a v4mapped v6 address netlink: reset extack earlier in netlink_rcv_skb