[ 42.096433][ T25] audit: type=1800 audit(1575115693.640:27): pid=7996 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="restorecond" dev="sda1" ino=2436 res=0 [ 42.149291][ T25] audit: type=1800 audit(1575115693.640:28): pid=7996 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="ssh" dev="sda1" ino=2417 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. [ 42.713044][ T25] audit: type=1800 audit(1575115694.290:29): pid=7996 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rc.local" dev="sda1" ino=2432 res=0 [ 42.732307][ T25] audit: type=1800 audit(1575115694.290:30): pid=7996 uid=0 auid=4294967295 ses=4294967295 subj=_ op=collect_data cause=failed(directio) comm="startpar" name="rmnologin" dev="sda1" ino=2423 res=0 Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.80' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 53.663948][ T8147] tipc: Started in network mode [ 53.668889][ T8147] tipc: Own node identity ff000000000000000000000000000001, cluster identity 4711 [ 53.678884][ T8147] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor022/8147 [ 53.688834][ T8147] caller is debug_smp_processor_id+0x1c/0x20 [ 53.694965][ T8147] CPU: 0 PID: 8147 Comm: syz-executor022 Not tainted 5.4.0-syzkaller #0 [ 53.703270][ T8147] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.713316][ T8147] Call Trace: [ 53.716597][ T8147] dump_stack+0x1fb/0x318 [ 53.721048][ T8147] check_preemption_disabled+0x1e6/0x260 [ 53.726709][ T8147] debug_smp_processor_id+0x1c/0x20 [ 53.731967][ T8147] dst_cache_get+0x57/0x490 [ 53.736468][ T8147] tipc_udp_xmit+0x5d/0xb20 [ 53.740963][ T8147] tipc_udp_send_msg+0x32d/0x3d0 [ 53.745882][ T8147] tipc_bearer_xmit_skb+0x2f3/0x440 [ 53.751078][ T8147] __tipc_nl_bearer_enable+0xaa9/0xda0 [ 53.757401][ T8147] tipc_nl_bearer_enable+0x22/0x30 [ 53.762510][ T8147] genl_rcv_msg+0xf17/0x13e0 [ 53.767084][ T8147] netlink_rcv_skb+0x19e/0x3d0 [ 53.771845][ T8147] ? genl_unbind+0x250/0x250 [ 53.776413][ T8147] genl_rcv+0x28/0x40 [ 53.780371][ T8147] netlink_unicast+0x767/0x920 [ 53.785122][ T8147] netlink_sendmsg+0xa21/0xd40 [ 53.789879][ T8147] ? netlink_getsockopt+0x9f0/0x9f0 [ 53.795052][ T8147] ____sys_sendmsg+0x509/0x820 [ 53.799792][ T8147] __sys_sendmsg+0x1ed/0x290 [ 53.804363][ T8147] ? check_preemption_disabled+0xb4/0x260 [ 53.810053][ T8147] ? debug_smp_processor_id+0x9/0x20 [ 53.815330][ T8147] ? __kasan_check_write+0x14/0x20 [ 53.820435][ T8147] ? __fpregs_load_activate+0x195/0x220 [ 53.825970][ T8147] ? switch_fpu_return+0xe/0x10 [ 53.830807][ T8147] ? prepare_exit_to_usermode+0x221/0x5b0 [ 53.836506][ T8147] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 53.841946][ T8147] ? trace_irq_disable_rcuidle+0x23/0x1e0 [ 53.847638][ T8147] ? do_syscall_64+0x1d/0x1c0 [ 53.852446][ T8147] __x64_sys_sendmsg+0x7f/0x90 [ 53.857196][ T8147] do_syscall_64+0xf7/0x1c0 [ 53.861713][ T8147] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 53.867607][ T8147] RIP: 0033:0x444359 [ 53.871483][ T8147] 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 1b d8 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 53.891174][ T8147] RSP: 002b:00007ffc73553838 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 53.899584][ T8147] RAX: ffffffffffffffda RBX: 00000000004002e0 RCX: 0000000000444359 [ 53.907550][ T8147] RDX: 0000000000000000 RSI: 0000000020000000 RDI: 00000000000000