Warning: Permanently added '10.128.0.74' (ECDSA) to the list of known hosts. 2020/09/25 12:57:43 fuzzer started 2020/09/25 12:57:43 connecting to host at 10.128.0.105:39287 2020/09/25 12:57:43 checking machine... 2020/09/25 12:57:43 checking revisions... 2020/09/25 12:57:43 testing simple program... syzkaller login: [ 37.682156] audit: type=1400 audit(1601038663.400:8): avc: denied { execmem } for pid=6378 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 37.741560] IPVS: ftp: loaded support on port[0] = 21 2020/09/25 12:57:43 building call list... [ 38.375704] ================================================================================ [ 38.384451] UBSAN: Undefined behaviour in ./include/crypto/hash.h:686:9 [ 38.391205] member access within null pointer of type 'struct crypto_shash' [ 38.398305] CPU: 1 PID: 22 Comm: kworker/u4:1 Not tainted 4.14.199-syzkaller #0 [ 38.405746] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.415109] Workqueue: netns cleanup_net [ 38.419199] Call Trace: [ 38.421786] dump_stack+0x21b/0x32e [ 38.425408] ? dma_virt_alloc+0x82/0x82 [ 38.429461] ? ubsan_prologue+0x29/0x50 [ 38.433433] ubsan_epilogue+0xe/0x3a [ 38.437140] handle_null_ptr_deref+0x78/0x80 [ 38.441631] __ubsan_handle_type_mismatch_v1+0x81/0xb0 [ 38.446906] sctp_destruct_sock+0x70/0x80 [ 38.451081] ? sctp_accept+0x730/0x730 [ 38.454973] __sk_destruct+0x93/0x8e0 [ 38.458769] ? proto_unregister+0x5e0/0x5e0 [ 38.463087] ? mark_held_locks+0xc4/0x120 [ 38.467233] __sk_free+0xf4/0x370 [ 38.470679] sk_free+0x30/0x50 [ 38.473867] sctp_close+0x667/0x940 [ 38.477498] ? sctp_init_sock+0x1430/0x1430 [ 38.481814] ? do_raw_spin_unlock+0x1e0/0x310 [ 38.486334] ? ip_mc_drop_socket+0x16/0x270 [ 38.490657] inet_release+0xfe/0x230 [ 38.494369] inet6_release+0x51/0x80 [ 38.498104] __sock_release+0x236/0x330 [ 38.502078] sctp_ctrlsock_exit+0x67/0x90 [ 38.506227] ops_exit_list+0x9a/0x190 [ 38.510026] cleanup_net+0x4a3/0xd30 [ 38.513748] ? net_drop_ns+0x90/0x90 [ 38.518429] process_one_work+0x7ac/0x1890 [ 38.522670] ? pwq_dec_nr_in_flight+0x360/0x360 [ 38.527336] ? lock_acquire+0x197/0x510 [ 38.531305] ? rwlock_bug.part.0+0xe0/0xe0 [ 38.535539] ? worker_thread+0x1e0/0x1330 [ 38.539704] worker_thread+0x6c1/0x1330 [ 38.543684] ? process_one_work+0x1890/0x1890 [ 38.548173] ? process_one_work+0x1890/0x1890 [ 38.552661] kthread+0x35e/0x530 [ 38.556020] ? kthread_create_on_node+0xd0/0xd0 [ 38.560684] ret_from_fork+0x24/0x30 [ 38.564393] ================================================================================ [ 38.860495] can: request_module (can-proto-0) failed. [ 38.877013] can: request_module (can-proto-0) failed. [ 38.889846] can: request_module (can-proto-0) failed. [ 38.941108] audit: type=1400 audit(1601038664.662:9): avc: denied { create } for pid=6362 comm="syz-fuzzer" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=dccp_socket permissive=1