Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.33' (ECDSA) to the list of known hosts.
2020/09/23 07:17:06 fuzzer started
2020/09/23 07:17:06 connecting to host at 10.128.0.105:44403
2020/09/23 07:17:06 checking machine...
2020/09/23 07:17:06 checking revisions...
2020/09/23 07:17:06 testing simple program...
syzkaller login: [   37.625912] audit: type=1400 audit(1600845426.776:8): avc:  denied  { execmem } for  pid=6382 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1
[   37.682112] IPVS: ftp: loaded support on port[0] = 21
2020/09/23 07:17:06 building call list...
[   38.308362] ================================================================================
[   38.317087] UBSAN: Undefined behaviour in ./include/crypto/hash.h:686:9
[   38.323837] member access within null pointer of type 'struct crypto_shash'
[   38.330933] CPU: 1 PID: 22 Comm: kworker/u4:1 Not tainted 4.14.198-syzkaller #0
[   38.338408] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   38.347783] Workqueue: netns cleanup_net
[   38.351897] Call Trace:
[   38.354490]  dump_stack+0x21b/0x32e
[   38.358121]  ? dma_virt_alloc+0x82/0x82
[   38.362102]  ? ubsan_prologue+0x29/0x50
[   38.366719]  ubsan_epilogue+0xe/0x3a
[   38.370431]  handle_null_ptr_deref+0x78/0x80
[   38.374872]  __ubsan_handle_type_mismatch_v1+0x81/0xb0
[   38.380187]  sctp_destruct_sock+0x70/0x80
[   38.384379]  ? sctp_accept+0x730/0x730
[   38.388266]  __sk_destruct+0x93/0x8e0
[   38.392097]  ? proto_unregister+0x5e0/0x5e0
[   38.396423]  ? mark_held_locks+0xc4/0x120
[   38.400574]  __sk_free+0xf4/0x370
[   38.404026]  sk_free+0x30/0x50
[   38.407222]  sctp_close+0x667/0x940
[   38.410866]  ? sctp_init_sock+0x1430/0x1430
[   38.415193]  ? do_raw_spin_unlock+0x1e0/0x310
[   38.419726]  ? ip_mc_drop_socket+0x16/0x270
[   38.424091]  inet_release+0xfe/0x230
[   38.427935]  inet6_release+0x51/0x80
[   38.431650]  __sock_release+0x236/0x330
[   38.435675]  sctp_ctrlsock_exit+0x67/0x90
[   38.439828]  ops_exit_list+0x9a/0x190
[   38.443634]  cleanup_net+0x4a3/0xd30
[   38.447391]  ? net_drop_ns+0x90/0x90
[   38.451119]  process_one_work+0x7ac/0x1890
[   38.455366]  ? pwq_dec_nr_in_flight+0x360/0x360
[   38.460171]  ? lock_acquire+0x197/0x510
[   38.464245]  ? rwlock_bug.part.0+0xe0/0xe0
[   38.468481]  ? worker_thread+0x1e0/0x1330
[   38.472635]  worker_thread+0x6c1/0x1330
[   38.476667]  ? process_one_work+0x1890/0x1890
[   38.481555]  ? process_one_work+0x1890/0x1890
[   38.486138]  kthread+0x35e/0x530
[   38.489543]  ? kthread_create_on_node+0xd0/0xd0
[   38.494304]  ret_from_fork+0x24/0x30
[   38.498112] ================================================================================
[   38.820354] can: request_module (can-proto-0) failed.
[   38.833682] can: request_module (can-proto-0) failed.
[   38.848017] can: request_module (can-proto-0) failed.
[   38.900579] audit: type=1400 audit(1600845428.057:9): avc:  denied  { create } for  pid=6366 comm="syz-fuzzer" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=dccp_socket permissive=1