[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [ 41.404348][ T26] audit: type=1800 audit(1554240393.020:25): pid=7685 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="cron" dev="sda1" ino=2414 res=0 [ 41.439850][ T26] audit: type=1800 audit(1554240393.020:26): pid=7685 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="mcstrans" dev="sda1" ino=2457 res=0 [ 41.474600][ T26] audit: type=1800 audit(1554240393.030:27): pid=7685 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.15.204' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 52.855061][ T7836] raw_sendmsg: syz-executor800 forgot to set AF_INET. Fix it! [ 52.871409][ T7836] check_preemption_disabled: 3 callbacks suppressed [ 52.871420][ T7836] BUG: using __this_cpu_read() in preemptible [00000000] code: syz-executor800/7836 [ 52.915386][ T7836] caller is sk_mc_loop+0x1d/0x210 [ 52.925954][ T7836] CPU: 1 PID: 7836 Comm: syz-executor800 Not tainted 5.1.0-rc2+ #118 [ 52.937431][ T7836] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.954088][ T7836] Call Trace: [ 52.957784][ T7836] dump_stack+0x172/0x1f0 [ 52.962879][ T7836] __this_cpu_preempt_check+0x246/0x270 [ 52.968860][ T7836] sk_mc_loop+0x1d/0x210 [ 52.973318][ T7836] ip_mc_output+0x2ef/0xf70 [ 52.978275][ T7836] ? __ip_queue_xmit+0x1bf0/0x1bf0 [ 52.983482][ T7836] ? __ip_make_skb+0xf15/0x1820 [ 52.988854][ T7836] ? ip_append_data.part.0+0x170/0x170 [ 52.995459][ T7836] ? dst_release+0x62/0xb0 [ 53.000141][ T7836] ? __ip_make_skb+0xf93/0x1820 [ 53.005510][ T7836] ip_local_out+0xc4/0x1b0 [ 53.010591][ T7836] ip_send_skb+0x42/0xf0 [ 53.015432][ T7836] ip_push_pending_frames+0x64/0x80 [ 53.021499][ T7836] raw_sendmsg+0x1e6d/0x2f20 [ 53.026614][ T7836] ? compat_raw_getsockopt+0x100/0x100 [ 53.032611][ T7836] ? mark_held_locks+0xa4/0xf0 [ 53.038314][ T7836] ? tomoyo_check_inet_address+0x321/0x700 [ 53.045220][ T7836] ? __lock_acquire+0x548/0x3fb0 [ 53.051186][ T7836] ? do_huge_pmd_anonymous_page+0xebd/0x1730 [ 53.058265][ T7836] ? ___might_sleep+0x163/0x280 [ 53.063887][ T7836] ? __might_sleep+0x95/0x190 [ 53.068987][ T7836] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 53.075060][ T7836] ? aa_sk_perm+0x288/0x880 [ 53.079868][ T7836] ? lock_downgrade+0x880/0x880 [ 53.085212][ T7836] ? aa_sock_msg_perm.isra.0+0xba/0x170 [ 53.091744][ T7836] inet_sendmsg+0x147/0x5e0 [ 53.097392][ T7836] ? compat_raw_getsockopt+0x100/0x100 [ 53.104107][ T7836] ? inet_sendmsg+0x147/0x5e0 [ 53.109037][ T7836] ? ipip_gro_receive+0x100/0x100 [ 53.114820][ T7836] sock_sendmsg+0xdd/0x130 [ 53.119280][ T7836] __sys_sendto+0x262/0x380 [ 53.124267][ T7836] ? __ia32_sys_getpeername+0xb0/0xb0 [ 53.129896][ T7836] ? aa_sk_perm+0x288/0x880 [ 53.134931][ T7836] ? apparmor_socket_setsockopt+0x22/0x30 [ 53.141458][ T7836] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 53.147924][ T7836] ? security_socket_setsockopt+0x93/0xc0 [ 53.154135][ T7836] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 53.159975][ T7836] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 53.167494][ T7836] ? do_syscall_64+0x26/0x610 [ 53.172357][ T7836] ? entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 53.179130][ T7836] __x64_sys_sendto+0xe1/0x1a0 [ 53.184294][ T7836] do_syscall_64+0x103/0x610 [ 53.189882][ T7836] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 53.196582][ T7836] RIP: 0033:0x4401a9 [ 53.200945][ T7836] Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 fb 13 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 53.225297][ T7836] RSP: 002b:00007ffeb42a53c8 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 53.235102][ T7836] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 00000000004401a9 [ 53.243791][ T7836] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000003 [ 53.253663][ T7836] RBP: 00000000006ca01