[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
         Starting Load/Save RF Kill Switch Status...
[  OK  ] Started Load/Save RF Kill Switch Status.
[  OK  ] Started Update UTMP about System Runlevel Changes.


Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.10.11' (ECDSA) to the list of known hosts.
2020/09/18 19:36:57 fuzzer started
2020/09/18 19:36:57 connecting to host at 10.128.0.105:41673
2020/09/18 19:36:57 checking machine...
2020/09/18 19:36:57 checking revisions...
2020/09/18 19:36:57 testing simple program...
syzkaller login: [   35.916165] audit: type=1400 audit(1600457817.999:8): avc:  denied  { execmem } for  pid=6359 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1
[   35.971844] IPVS: ftp: loaded support on port[0] = 21
2020/09/18 19:36:58 building call list...
[   36.605008] ================================================================================
[   36.613741] UBSAN: Undefined behaviour in ./include/crypto/hash.h:686:9
[   36.620506] member access within null pointer of type 'struct crypto_shash'
[   36.627597] CPU: 1 PID: 5 Comm: kworker/u4:0 Not tainted 4.14.198-syzkaller #0
[   36.634942] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   36.644292] Workqueue: netns cleanup_net
[   36.648341] Call Trace:
[   36.650939]  dump_stack+0x21b/0x32e
[   36.654559]  ? dma_virt_alloc+0x82/0x82
[   36.658543]  ? ubsan_prologue+0x29/0x50
[   36.662509]  ubsan_epilogue+0xe/0x3a
[   36.666210]  handle_null_ptr_deref+0x78/0x80
[   36.670607]  __ubsan_handle_type_mismatch_v1+0x81/0xb0
[   36.675897]  sctp_destruct_sock+0x70/0x80
[   36.680032]  ? sctp_accept+0x730/0x730
[   36.683908]  __sk_destruct+0x93/0x8e0
[   36.687697]  ? proto_unregister+0x5e0/0x5e0
[   36.692013]  ? mark_held_locks+0xc4/0x120
[   36.696151]  __sk_free+0xf4/0x370
[   36.699597]  sk_free+0x30/0x50
[   36.702777]  sctp_close+0x667/0x940
[   36.706403]  ? sctp_init_sock+0x1430/0x1430
[   36.710714]  ? do_raw_spin_unlock+0x1e0/0x310
[   36.715209]  ? ip_mc_drop_socket+0x16/0x270
[   36.719514]  inet_release+0xfe/0x230
[   36.723224]  inet6_release+0x51/0x80
[   36.726919]  __sock_release+0x236/0x330
[   36.730888]  sctp_ctrlsock_exit+0x67/0x90
[   36.735015]  ops_exit_list+0x9a/0x190
[   36.738798]  cleanup_net+0x4a3/0xd30
[   36.742492]  ? net_drop_ns+0x90/0x90
[   36.746203]  process_one_work+0x7ac/0x1890
[   36.750419]  ? pwq_dec_nr_in_flight+0x360/0x360
[   36.755067]  ? lock_acquire+0x197/0x510
[   36.759030]  ? rwlock_bug.part.0+0xe0/0xe0
[   36.763244]  ? worker_thread+0x1e0/0x1330
[   36.767374]  worker_thread+0x6c1/0x1330
[   36.771344]  ? process_one_work+0x1890/0x1890
[   36.775831]  ? process_one_work+0x1890/0x1890
[   36.780304]  kthread+0x35e/0x530
[   36.783660]  ? kthread_create_on_node+0xd0/0xd0
[   36.788316]  ret_from_fork+0x24/0x30
[   36.792013] ================================================================================
[   37.029358] can: request_module (can-proto-0) failed.
[   37.041409] can: request_module (can-proto-0) failed.
[   37.053926] can: request_module (can-proto-0) failed.
[   37.104324] audit: type=1400 audit(1600457819.189:9): avc:  denied  { create } for  pid=6342 comm="syz-fuzzer" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=dccp_socket permissive=1