[....] Starting enhanced syslogd: rsyslogd[ 14.213562] audit: type=1400 audit(1550673219.256:4): avc: denied { syslog } for pid=1922 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.186' (ECDSA) to the list of known hosts. 2019/02/20 14:34:02 parsed 1 programs 2019/02/20 14:34:05 executed programs: 0 syzkaller login: [ 44.974602] BUG: using __this_cpu_add() in preemptible [00000000] code: syz-executor.0/3066 [ 44.983904] caller is __this_cpu_preempt_check+0x1d/0x30 [ 44.989370] CPU: 0 PID: 3066 Comm: syz-executor.0 Not tainted 4.4.174+ #17 [ 44.996371] 0000000000000000 debcfee01a5024c8 ffff8800bac7f750 ffffffff81aad1a1 [ 45.004412] ffff8800bbaf0000 0000000000000000 ffffffff82a861e0 ffffffff8292c040 [ 45.012401] 0000000000000002 ffff8800bac7f790 ffffffff81b0ad83 ffff8800b3719900 [ 45.020409] Call Trace: [ 45.022974] [] dump_stack+0xc1/0x120 [ 45.028313] [] check_preemption_disabled+0x1d3/0x200 [ 45.035047] [] __this_cpu_preempt_check+0x1d/0x30 [ 45.041539] [] tcp_try_coalesce+0x245/0x510 [ 45.047491] [] ? tcp_prune_ofo_queue.part.0+0x460/0x460 [ 45.054485] [] ? skb_copy_datagram_from_iter+0x32b/0x5c0 [ 45.061569] [] tcp_queue_rcv+0x127/0x6f0 [ 45.067256] [] tcp_send_rcvq+0x3de/0x4a0 [ 45.072946] [] ? tcp_rcv_established+0x2070/0x2070 [ 45.079504] [] ? trace_hardirqs_on_caller+0x385/0x5a0 [ 45.086334] [] ? lock_sock_nested+0x90/0x120 [ 45.092374] [] ? trace_hardirqs_on+0xd/0x10 [ 45.098323] [] ? __local_bh_enable_ip+0x6a/0xe0 [ 45.104616] [] tcp_sendmsg+0x2332/0x2ab0 [ 45.110330] [] ? trace_hardirqs_on+0x10/0x10 [ 45.116366] [] ? sock_has_perm+0x2a8/0x400 [ 45.122226] [] ? selinux_msg_queue_alloc_security+0x2e0/0x2e0 [ 45.129734] [] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 45.136470] [] ? tcp_sendpage+0x17c0/0x17c0 [ 45.142416] [] ? check_preemption_disabled+0x3c/0x200 [ 45.149230] [] ? check_preemption_disabled+0x3c/0x200 [ 45.156045] [] ? inet_sendmsg+0x143/0x4d0 [ 45.161822] [] inet_sendmsg+0x202/0x4d0 [ 45.167422] [] ? inet_sendmsg+0x76/0x4d0 [ 45.173107] [] ? inet_recvmsg+0x4d0/0x4d0 [ 45.178880] [] sock_sendmsg+0xbe/0x110 [ 45.184392] [] sock_write_iter+0x235/0x3d0 [ 45.190251] [] ? sock_sendmsg+0x110/0x110 [ 45.196026] [] ? iov_iter_init+0xb3/0x1e0 [ 45.201805] [] __vfs_write+0x2e8/0x3d0 [ 45.207320] [] ? __vfs_read+0x3c0/0x3c0 [ 45.212922] [] ? selinux_file_permission+0x2f5/0x450 [ 45.219652] [] ? rw_verify_area+0x103/0x2f0 [ 45.225617] [] vfs_write+0x182/0x4e0 [ 45.230954] [] SyS_write+0xdc/0x1c0 [ 45.236204] [] ? SyS_read+0x1c0/0x1c0 [ 45.241635] [] ? do_fast_syscall_32+0xd6/0xa90 [ 45.247843] [] ? SyS_read+0x1c0/0x1c0 [ 45.253273] [] do_fast_syscall_32+0x32d/0xa90 [ 45.259397] [] sysenter_flags_fixed+0xd/0x1a 2019/02/20 14:34:10 executed programs: 204 [ 45.770739] BUG: using __this_cpu_add() in preemptible [00000000] code: syz-executor.0/3177 [ 45.779874] caller is __this_cpu_preempt_check+0x1d/0x30 [ 45.785306] CPU: 1 PID: 3177 Comm: syz-executor.0 Not tainted 4.4.174+ #17 [ 45.792291] 0000000000000000 69629d2443f342fc ffff8801d88af750 ffffffff81aad1a1 [ 45.800291] ffff8801d8b35f00 0000000000000001 ffffffff82a861e0 ffffffff8292c040 [ 45.808294] 0000000000000001 ffff8801d88af790 ffffffff81b0ad83 ffff8800ba423680 [ 45.816292] Call Trace: [ 45.818861] [] dump_stack+0xc1/0x120 [ 45.824204] [] check_preemption_disabled+0x1d3/0x200 [ 45.830933] [] __this_cpu_preempt_check+0x1d/0x30 [ 45.837404] [] tcp_try_coalesce+0x245/0x510 [ 45.843358] [] ? tcp_prune_ofo_queue.part.0+0x460/0x460 [ 45.850351] [] ? skb_copy_datagram_from_iter+0x32b/0x5c0 [ 45.857425] [] tcp_queue_rcv+0x127/0x6f0 [ 45.863120] [] tcp_send_rcvq+0x3de/0x4a0 [ 45.868821] [] ? tcp_rcv_established+0x2070/0x2070 [ 45.875378] [] ? trace_hardirqs_on_caller+0x385/0x5a0 [ 45.882193] [] ? lock_sock_nested+0x90/0x120 [ 45.888228] [] ? trace_hardirqs_on+0xd/0x10 [ 45.894178] [] ? __local_bh_enable_ip+0x6a/0xe0 [ 45.900473] [] tcp_sendmsg+0x2332/0x2ab0 [ 45.906163] [] ? trace_hardirqs_on+0x10/0x10 [ 45.912201] [] ? sock_has_perm+0x2a8/0x400 [ 45.918245] [] ? selinux_msg_queue_alloc_security+0x2e0/0x2e0 [ 45.925763] [] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 45.932500] [] ? tcp_sendpage+0x17c0/0x17c0 [ 45.938451] [] ? check_preemption_disabled+0x3c/0x200 [ 45.945271] [] ? check_preemption_disabled+0x3c/0x200 [ 45.952089] [] ? inet_sendmsg+0x143/0x4d0 [ 45.957861] [] inet_sendmsg+0x202/0x4d0 [ 45.963471] [] ? inet_sendmsg+0x76/0x4d0 [ 45.969157] [] ? inet_recvmsg+0x4d0/0x4d0 [ 45.974933] [] sock_sendmsg+0xbe/0x110 [ 45.980461] [] sock_write_iter+0x235/0x3d0 [ 45.986320] [] ? sock_sendmsg+0x110/0x110 [ 45.992097] [] ? iov_iter_init+0xb3/0x1e0 [ 45.997872] [] __vfs_write+0x2e8/0x3d0 [ 46.003384] [] ? __vfs_read+0x3c0/0x3c0 [ 46.008987] [] ? selinux_file_permission+0x2f5/0x450 [ 46.015717] [] ? rw_verify_area+0x103/0x2f0 [ 46.021664] [] vfs_write+0x182/0x4e0 [ 46.027001] [] SyS_write+0xdc/0x1c0 [ 46.032270] [] ? SyS_read+0x1c0/0x1c0 [ 46.037714] [] ? do_fast_syscall_32+0xd6/0xa90 [ 46.043923] [] ? SyS_read+0x1c0/0x1c0 [ 46.049352] [] do_fast_syscall_32+0x32d/0xa90 [ 46.055475] [] sysenter_flags_fixed+0xd/0x1a [ 48.719449] BUG: using __this_cpu_add() in preemptible [00000000] code: syz-executor.0/3761 [ 48.728445] caller is __this_cpu_preempt_check+0x1d/0x30 [ 48.733880] CPU: 0 PID: 3761 Comm: syz-executor.0 Not tainted 4.4.174+ #17 [ 48.740867] 0000000000000000 bee2e32d4984b7ae ffff8800b5e9f750 ffffffff81aad1a1 [ 48.749056] ffff8800b6bfdf00 0000000000000000 ffffffff82a861e0 ffffffff8292c040 [ 48.757058] 0000000000000002 ffff8800b5e9f790 ffffffff81b0ad83 ffff8800b728e280 [ 48.765056] Call Trace: [ 48.767623] [] dump_stack+0xc1/0x120 [ 48.772962] [] check_preemption_disabled+0x1d3/0x200 [ 48.779708] [] __this_cpu_preempt_check+0x1d/0x30 [ 48.786181] [] tcp_try_coalesce+0x245/0x510 [ 48.792130] [] ? tcp_prune_ofo_queue.part.0+0x460/0x460 [ 48.799156] [] ? skb_copy_datagram_from_iter+0x32b/0x5c0 [ 48.806233] [] tcp_queue_rcv+0x127/0x6f0 [ 48.811969] [] tcp_send_rcvq+0x3de/0x4a0 [ 48.817662] [] ? tcp_rcv_established+0x2070/0x2070 [ 48.824220] [] ? trace_hardirqs_on_caller+0x385/0x5a0 [ 48.831076] [] ? lock_sock_nested+0x90/0x120 [ 48.837111] [] ? trace_hardirqs_on+0xd/0x10 [ 48.843064] [] ? __local_bh_enable_ip+0x6a/0xe0 [ 48.849366] [] tcp_sendmsg+0x2332/0x2ab0 [ 48.855064] [] ? trace_hardirqs_on+0x10/0x10 [ 48.861101] [] ? sock_has_perm+0x2a8/0x400 [ 48.866960] [] ? selinux_msg_queue_alloc_security+0x2e0/0x2e0 [ 48.874480] [] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 48.881225] [] ? tcp_sendpage+0x17c0/0x17c0 [ 48.887172] [] ? check_preemption_disabled+0x3c/0x200 [ 48.893985] [] ? check_preemption_disabled+0x3c/0x200 [ 48.900807] [] ? inet_sendmsg+0x143/0x4d0 [ 48.906581] [] inet_sendmsg+0x202/0x4d0 [ 48.912178] [] ? inet_sendmsg+0x76/0x4d0 [ 48.917865] [] ? inet_recvmsg+0x4d0/0x4d0 [ 48.923638] [] sock_sendmsg+0xbe/0x110 [ 48.929166] [] sock_write_iter+0x235/0x3d0 [ 48.935026] [] ? sock_sendmsg+0x110/0x110 [ 48.940803] [] ? iov_iter_init+0xb3/0x1e0 [ 48.946579] [] __vfs_write+0x2e8/0x3d0 [ 48.952120] [] ? __vfs_read+0x3c0/0x3c0 [ 48.957733] [] ? selinux_file_permission+0x2f5/0x450 [ 48.964463] [] ? rw_verify_area+0x103/0x2f0 [ 48.970408] [] vfs_write+0x182/0x4e0 [ 48.975750] [] SyS_write+0xdc/0x1c0 [ 48.981006] [] ? SyS_read+0x1c0/0x1c0 [ 48.986440] [] ? do_fast_syscall_32+0xd6/0xa90 [ 48.992645] [] ? SyS_read+0x1c0/0x1c0 [ 48.998070] [] do_fast_syscall_32+0x32d/0xa90 [ 49.004193] [] sysenter_flags_fixed+0xd/0x1a 2019/02/20 14:34:15 executed programs: 421