Warning: Permanently added '10.128.0.183' (ECDSA) to the list of known hosts. 2020/09/18 07:34:11 fuzzer started 2020/09/18 07:34:11 connecting to host at 10.128.0.105:38017 2020/09/18 07:34:11 checking machine... 2020/09/18 07:34:11 checking revisions... 2020/09/18 07:34:11 testing simple program... syzkaller login: [ 40.467506] audit: type=1400 audit(1600414451.871:8): avc: denied { execmem } for pid=6376 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 40.525972] IPVS: ftp: loaded support on port[0] = 21 2020/09/18 07:34:12 building call list... [ 41.152095] ================================================================================ [ 41.160830] UBSAN: Undefined behaviour in ./include/crypto/hash.h:686:9 [ 41.167574] member access within null pointer of type 'struct crypto_shash' [ 41.174669] CPU: 0 PID: 416 Comm: kworker/u4:5 Not tainted 4.14.198-syzkaller #0 [ 41.182193] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.191557] Workqueue: netns cleanup_net [ 41.195612] Call Trace: [ 41.198199] dump_stack+0x21b/0x32e [ 41.201825] ? dma_virt_alloc+0x82/0x82 [ 41.205794] ? ubsan_prologue+0x29/0x50 [ 41.209767] ubsan_epilogue+0xe/0x3a [ 41.213480] handle_null_ptr_deref+0x78/0x80 [ 41.217884] __ubsan_handle_type_mismatch_v1+0x81/0xb0 [ 41.223186] sctp_destruct_sock+0x70/0x80 [ 41.227849] ? sctp_accept+0x730/0x730 [ 41.231736] __sk_destruct+0x93/0x8e0 [ 41.235533] ? proto_unregister+0x5e0/0x5e0 [ 41.239850] ? mark_held_locks+0xc4/0x120 [ 41.243999] __sk_free+0xf4/0x370 [ 41.247478] sk_free+0x30/0x50 [ 41.250674] sctp_close+0x667/0x940 [ 41.254362] ? sctp_init_sock+0x1430/0x1430 [ 41.258676] ? do_raw_spin_unlock+0x1e0/0x310 [ 41.263171] ? ip_mc_drop_socket+0x16/0x270 [ 41.267491] inet_release+0xfe/0x230 [ 41.271200] inet6_release+0x51/0x80 [ 41.274928] __sock_release+0x236/0x330 [ 41.278916] sctp_ctrlsock_exit+0x67/0x90 [ 41.283065] ops_exit_list+0x9a/0x190 [ 41.286884] cleanup_net+0x4a3/0xd30 [ 41.290598] ? net_drop_ns+0x90/0x90 [ 41.294321] process_one_work+0x7ac/0x1890 [ 41.298565] ? pwq_dec_nr_in_flight+0x360/0x360 [ 41.303240] ? lock_acquire+0x197/0x510 [ 41.307214] ? rwlock_bug.part.0+0xe0/0xe0 [ 41.311448] ? worker_thread+0x1e0/0x1330 [ 41.315602] worker_thread+0x6c1/0x1330 [ 41.319586] ? process_one_work+0x1890/0x1890 [ 41.324080] ? process_one_work+0x1890/0x1890 [ 41.328587] kthread+0x35e/0x530 [ 41.331956] ? kthread_create_on_node+0xd0/0xd0 [ 41.336625] ret_from_fork+0x24/0x30 [ 41.340341] ================================================================================ [ 41.588986] can: request_module (can-proto-0) failed. [ 41.602890] can: request_module (can-proto-0) failed. [ 41.616216] can: request_module (can-proto-0) failed. [ 41.668353] audit: type=1400 audit(1600414453.071:9): avc: denied { create } for pid=6360 comm="syz-fuzzer" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=dccp_socket permissive=1