[....] Starting enhanced syslogd: rsyslogd[ 14.773088] audit: type=1400 audit(1548799748.865:4): avc: denied { syslog } for pid=1919 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[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?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 '10.128.0.210' (ECDSA) to the list of known hosts. 2019/01/29 22:09:57 parsed 1 programs 2019/01/29 22:09:59 executed programs: 0 syzkaller login: [ 67.617499] BUG: using __this_cpu_add() in preemptible [00000000] code: syz-executor0/2638 [ 67.626501] caller is __this_cpu_preempt_check+0x1d/0x30 [ 67.631935] CPU: 0 PID: 2638 Comm: syz-executor0 Not tainted 4.4.172+ #13 [ 67.638835] 0000000000000000 e99f6a32045d6d06 ffff8801d091f930 ffffffff81aacde1 [ 67.646828] ffff8801d08a2f80 0000000000000000 ffffffff82a860a0 ffffffff8292c040 [ 67.654819] 0000000000000002 ffff8801d091f970 ffffffff81b0a993 ffff8801d08d5204 [ 67.662842] Call Trace: [ 67.665418] [] dump_stack+0xc1/0x120 [ 67.670760] [] check_preemption_disabled+0x1d3/0x200 [ 67.677487] [] __this_cpu_preempt_check+0x1d/0x30 [ 67.683963] [] tcp_try_coalesce+0x245/0x510 [ 67.689913] [] ? tcp_prune_ofo_queue.part.0+0x460/0x460 [ 67.696907] [] ? skb_copy_datagram_from_iter+0x32b/0x5c0 [ 67.704002] [] tcp_queue_rcv+0x127/0x6f0 [ 67.709720] [] tcp_send_rcvq+0x3de/0x4a0 [ 67.715408] [] ? tcp_rcv_established+0x2070/0x2070 [ 67.721967] [] ? trace_hardirqs_on_caller+0x385/0x5a0 [ 67.728788] [] ? lock_sock_nested+0x90/0x120 [ 67.734834] [] ? trace_hardirqs_on+0xd/0x10 [ 67.740785] [] ? __local_bh_enable_ip+0x6a/0xe0 [ 67.747082] [] tcp_sendmsg+0x2332/0x2ab0 [ 67.752770] [] ? trace_hardirqs_on+0x10/0x10 [ 67.758810] [] ? sock_has_perm+0x2a8/0x400 [ 67.764670] [] ? selinux_msg_queue_alloc_security+0x2e0/0x2e0 [ 67.772179] [] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 67.778916] [] ? tcp_sendpage+0x17c0/0x17c0 [ 67.784863] [] ? check_preemption_disabled+0x3c/0x200 [ 67.791678] [] ? check_preemption_disabled+0x3c/0x200 [ 67.798606] [] ? inet_sendmsg+0x143/0x4d0 [ 67.804382] [] inet_sendmsg+0x202/0x4d0 [ 67.810051] [] ? inet_sendmsg+0x76/0x4d0 [ 67.815746] [] ? inet_recvmsg+0x4d0/0x4d0 [ 67.821525] [] sock_sendmsg+0xbe/0x110 [ 67.827042] [] SyS_sendto+0x201/0x340 [ 67.832470] [] ? SyS_getpeername+0x2a0/0x2a0 [ 67.838514] [] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 67.845244] [] ? __might_fault+0x117/0x1d0 [ 67.851109] [] ? __might_fault+0x191/0x1d0 [ 67.856971] [] ? __might_fault+0xe7/0x1d0 [ 67.862746] [] ? SyS_clock_gettime+0x118/0x1e0 [ 67.868954] [] ? SyS_clock_settime+0x220/0x220 [ 67.875162] [] ? lockdep_sys_exit_thunk+0x12/0x14 [ 67.881632] [] entry_SYSCALL_64_fastpath+0x1e/0x9a [ 68.642033] BUG: using __this_cpu_add() in preemptible [00000000] code: syz-executor0/2862 [ 68.650799] caller is __this_cpu_preempt_check+0x1d/0x30 [ 68.656393] CPU: 0 PID: 2862 Comm: syz-executor0 Not tainted 4.4.172+ #13 [ 68.663309] 0000000000000000 9d15477bd83cd6df ffff8801cfef7930 ffffffff81aacde1 [ 68.671310] ffff8801d0d94740 0000000000000000 ffffffff82a860a0 ffffffff8292c040 [ 68.679305] 0000000000000002 ffff8801cfef7970 ffffffff81b0a993 ffff8801d2543ac4 [ 68.687361] Call Trace: [ 68.689935] [] dump_stack+0xc1/0x120 [ 68.695286] [] check_preemption_disabled+0x1d3/0x200 [ 68.702015] [] __this_cpu_preempt_check+0x1d/0x30 [ 68.708484] [] tcp_try_coalesce+0x245/0x510 [ 68.714432] [] ? tcp_prune_ofo_queue.part.0+0x460/0x460 [ 68.721422] [] ? skb_copy_datagram_from_iter+0x32b/0x5c0 [ 68.728498] [] tcp_queue_rcv+0x127/0x6f0 [ 68.734199] [] tcp_send_rcvq+0x3de/0x4a0 [ 68.739904] [] ? tcp_rcv_established+0x2070/0x2070 [ 68.746459] [] ? trace_hardirqs_on_caller+0x385/0x5a0 [ 68.753275] [] ? lock_sock_nested+0x90/0x120 [ 68.759310] [] ? trace_hardirqs_on+0xd/0x10 [ 68.765258] [] ? __local_bh_enable_ip+0x6a/0xe0 [ 68.771560] [] tcp_sendmsg+0x2332/0x2ab0 [ 68.777249] [] ? trace_hardirqs_on+0x10/0x10 [ 68.783285] [] ? sock_has_perm+0x2a8/0x400 [ 68.789150] [] ? selinux_msg_queue_alloc_security+0x2e0/0x2e0 [ 68.796669] [] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 68.803396] [] ? tcp_sendpage+0x17c0/0x17c0 [ 68.809341] [] ? check_preemption_disabled+0x3c/0x200 [ 68.816158] [] ? check_preemption_disabled+0x3c/0x200 [ 68.822973] [] ? inet_sendmsg+0x143/0x4d0 [ 68.828743] [] inet_sendmsg+0x202/0x4d0 [ 68.834358] [] ? inet_sendmsg+0x76/0x4d0 [ 68.840051] [] ? inet_recvmsg+0x4d0/0x4d0 [ 68.845826] [] sock_sendmsg+0xbe/0x110 [ 68.851341] [] SyS_sendto+0x201/0x340 [ 68.856790] [] ? SyS_getpeername+0x2a0/0x2a0 [ 68.862837] [] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 68.869565] [] ? __might_fault+0x117/0x1d0 [ 68.875425] [] ? __might_fault+0x191/0x1d0 [ 68.881284] [] ? __might_fault+0xe7/0x1d0 [ 68.887056] [] ? SyS_clock_gettime+0x118/0x1e0 [ 68.893262] [] ? SyS_clock_settime+0x220/0x220 [ 68.899471] [] ? lockdep_sys_exit_thunk+0x12/0x14 [ 68.905943] [] entry_SYSCALL_64_fastpath+0x1e/0x9a [ 69.582127] BUG: using __this_cpu_add() in preemptible [00000000] code: syz-executor0/3059 [ 69.590692] caller is __this_cpu_preempt_check+0x1d/0x30 [ 69.596167] CPU: 0 PID: 3059 Comm: syz-executor0 Not tainted 4.4.172+ #13 [ 69.603093] 0000000000000000 f8519a9391efbf90 ffff8801da75f930 ffffffff81aacde1 [ 69.611085] ffff8801cf540000 0000000000000000 ffffffff82a860a0 ffffffff8292c040 [ 69.619090] 0000000000000002 ffff8801da75f970 ffffffff81b0a993 ffff8800b7a03484 [ 69.627083] Call Trace: [ 69.629659] [] dump_stack+0xc1/0x120 [ 69.635015] [] check_preemption_disabled+0x1d3/0x200 [ 69.641745] [] __this_cpu_preempt_check+0x1d/0x30 [ 69.648224] [] tcp_try_coalesce+0x245/0x510 [ 69.654169] [] ? tcp_prune_ofo_queue.part.0+0x460/0x460 [ 69.661184] [] ? skb_copy_datagram_from_iter+0x32b/0x5c0 [ 69.668270] [] tcp_queue_rcv+0x127/0x6f0 [ 69.673960] [] tcp_send_rcvq+0x3de/0x4a0 [ 69.679649] [] ? tcp_rcv_established+0x2070/0x2070 [ 69.686229] [] ? trace_hardirqs_on_caller+0x385/0x5a0 [ 69.693045] [] ? lock_sock_nested+0x90/0x120 [ 69.699076] [] ? trace_hardirqs_on+0xd/0x10 [ 69.705022] [] ? __local_bh_enable_ip+0x6a/0xe0 [ 69.711318] [] tcp_sendmsg+0x2332/0x2ab0 [ 69.717002] [] ? trace_hardirqs_on+0x10/0x10 [ 69.723036] [] ? sock_has_perm+0x2a8/0x400 [ 69.728918] [] ? selinux_msg_queue_alloc_security+0x2e0/0x2e0 [ 69.736426] [] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 69.743153] [] ? tcp_sendpage+0x17c0/0x17c0 [ 69.749097] [] ? check_preemption_disabled+0x3c/0x200 [ 69.755911] [] ? check_preemption_disabled+0x3c/0x200 [ 69.762750] [] ? inet_sendmsg+0x143/0x4d0 [ 69.768524] [] inet_sendmsg+0x202/0x4d0 [ 69.774124] [] ? inet_sendmsg+0x76/0x4d0 [ 69.779910] [] ? inet_recvmsg+0x4d0/0x4d0 [ 69.785687] [] sock_sendmsg+0xbe/0x110 [ 69.791205] [] SyS_sendto+0x201/0x340 [ 69.796634] [] ? SyS_getpeername+0x2a0/0x2a0 [ 69.802768] [] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 69.809499] [] ? __might_fault+0x117/0x1d0 [ 69.815358] [] ? __might_fault+0x191/0x1d0 [ 69.821228] [] ? __might_fault+0xe7/0x1d0 [ 69.827007] [] ? SyS_clock_gettime+0x118/0x1e0 [ 69.833223] [] ? SyS_clock_settime+0x220/0x220 [ 69.839432] [] ? lockdep_sys_exit_thunk+0x12/0x14 [ 69.845902] [] entry_SYSCALL_64_fastpath+0x1e/0x9a 2019/01/29 22:10:04 executed programs: 243 [ 71.000011] BUG: using __this_cpu_add() in preemptible [00000000] code: syz-executor0/3397 [ 71.008674] caller is __this_cpu_preempt_check+0x1d/0x30 [ 71.014350] CPU: 1 PID: 3397 Comm: syz-executor0 Not tainted 4.4.172+ #13 [ 71.021302] 0000000000000000 c94f0f6f163df6b9 ffff8801d85a7930 ffffffff81aacde1 [ 71.029307] ffff8800ba774740 0000000000000001 ffffffff82a860a0 ffffffff8292c040 [ 71.037315] 0000000000000001 ffff8801d85a7970 ffffffff81b0a993 ffff8801da4c4704 [ 71.045307] Call Trace: [ 71.047872] [] dump_stack+0xc1/0x120 [ 71.053212] [] check_preemption_disabled+0x1d3/0x200 [ 71.059940] [] __this_cpu_preempt_check+0x1d/0x30 [ 71.066412] [] tcp_try_coalesce+0x245/0x510 [ 71.072361] [] ? tcp_prune_ofo_queue.part.0+0x460/0x460 [ 71.079352] [] ? skb_copy_datagram_from_iter+0x32b/0x5c0 [ 71.086433] [] tcp_queue_rcv+0x127/0x6f0 [ 71.092119] [] tcp_send_rcvq+0x3de/0x4a0 [ 71.097809] [] ? tcp_rcv_established+0x2070/0x2070 [ 71.104375] [] ? trace_hardirqs_on_caller+0x385/0x5a0 [ 71.111203] [] ? lock_sock_nested+0x90/0x120 [ 71.117238] [] ? trace_hardirqs_on+0xd/0x10 [ 71.123200] [] ? __local_bh_enable_ip+0x6a/0xe0 [ 71.129503] [] tcp_sendmsg+0x2332/0x2ab0 [ 71.135187] [] ? trace_hardirqs_on+0x10/0x10 [ 71.141235] [] ? sock_has_perm+0x2a8/0x400 [ 71.147097] [] ? selinux_msg_queue_alloc_security+0x2e0/0x2e0 [ 71.154608] [] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 71.161335] [] ? tcp_sendpage+0x17c0/0x17c0 [ 71.167281] [] ? check_preemption_disabled+0x3c/0x200 [ 71.174099] [] ? check_preemption_disabled+0x3c/0x200 [ 71.180925] [] ? inet_sendmsg+0x143/0x4d0 [ 71.186695] [] inet_sendmsg+0x202/0x4d0 [ 71.192305] [] ? inet_sendmsg+0x76/0x4d0 [ 71.197989] [] ? inet_recvmsg+0x4d0/0x4d0 [ 71.203766] [] sock_sendmsg+0xbe/0x110 [ 71.209278] [] SyS_sendto+0x201/0x340 [ 71.214704] [] ? SyS_getpeername+0x2a0/0x2a0 [ 71.220742] [] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 71.227472] [] ? __might_fault+0x117/0x1d0 [ 71.233331] [] ? __might_fault+0x191/0x1d0 [ 71.239196] [] ? __might_fault+0xe7/0x1d0 [ 71.244974] [] ? SyS_clock_gettime+0x118/0x1e0 [ 71.251179] [] ? SyS_clock_settime+0x220/0x220 [ 71.257399] [] ? lockdep_sys_exit_thunk+0x12/0x14 [ 71.263869] [] entry_SYSCALL_64_fastpath+0x1e/0x9a [ 73.008749] BUG: using __this_cpu_add() in preemptible [00000000] code: syz-executor0/3917 [ 73.017482] caller is __this_cpu_preempt_check+0x1d/0x30 [ 73.022917] CPU: 1 PID: 3917 Comm: syz-executor0 Not tainted 4.4.172+ #13 [ 73.029816] 0000000000000000 e68556ae36f79c1c ffff8800b26bf930 ffffffff81aacde1 [ 73.037820] ffff8801cd1d4740 0000000000000001 ffffffff82a860a0 ffffffff8292c040 [ 73.045847] 0000000000000001 ffff8800b26bf970 ffffffff81b0a993 ffff8801d4c080c4 [ 73.053846] Call Trace: [ 73.056425] [] dump_stack+0xc1/0x120 [ 73.061768] [] check_preemption_disabled+0x1d3/0x200 [ 73.068496] [] __this_cpu_preempt_check+0x1d/0x30 [ 73.074968] [] tcp_try_coalesce+0x245/0x510 [ 73.080932] [] ? tcp_prune_ofo_queue.part.0+0x460/0x460 [ 73.087924] [] ? skb_copy_datagram_from_iter+0x32b/0x5c0 [ 73.095006] [] tcp_queue_rcv+0x127/0x6f0 [ 73.100694] [] tcp_send_rcvq+0x3de/0x4a0 [ 73.106387] [] ? tcp_rcv_established+0x2070/0x2070 [ 73.112968] [] ? trace_hardirqs_on_caller+0x385/0x5a0 [ 73.119790] [] ? lock_sock_nested+0x90/0x120 [ 73.125826] [] ? trace_hardirqs_on+0xd/0x10 [ 73.131777] [] ? __local_bh_enable_ip+0x6a/0xe0 [ 73.138073] [] tcp_sendmsg+0x2332/0x2ab0 [ 73.143760] [] ? trace_hardirqs_on+0x10/0x10 [ 73.149795] [] ? sock_has_perm+0x2a8/0x400 [ 73.155656] [] ? selinux_msg_queue_alloc_security+0x2e0/0x2e0 [ 73.163167] [] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 73.169905] [] ? tcp_sendpage+0x17c0/0x17c0 [ 73.175854] [] ? check_preemption_disabled+0x3c/0x200 [ 73.182680] [] ? check_preemption_disabled+0x3c/0x200 [ 73.189500] [] ? inet_sendmsg+0x143/0x4d0 [ 73.195288] [] inet_sendmsg+0x202/0x4d0 [ 73.200889] [] ? inet_sendmsg+0x76/0x4d0 [ 73.206577] [] ? inet_recvmsg+0x4d0/0x4d0 [ 73.212351] [] sock_sendmsg+0xbe/0x110 [ 73.217862] [] SyS_sendto+0x201/0x340 [ 73.223287] [] ? SyS_getpeername+0x2a0/0x2a0 [ 73.229323] [] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 73.236056] [] ? __might_fault+0x117/0x1d0 [ 73.241914] [] ? __might_fault+0x191/0x1d0 [ 73.247774] [] ? __might_fault+0xe7/0x1d0 [ 73.253549] [] ? SyS_clock_gettime+0x118/0x1e0 [ 73.259758] [] ? SyS_clock_settime+0x220/0x220 [ 73.265969] [] ? lockdep_sys_exit_thunk+0x12/0x14 [ 73.272438] [] entry_SYSCALL_64_fastpath+0x1e/0x9a [ 74.816033] BUG: using __this_cpu_add() in preemptible [00000000] code: syz-executor0/4332 [ 74.824608] caller is __this_cpu_preempt_check+0x1d/0x30 [ 74.830039] CPU: 0 PID: 4332 Comm: syz-executor0 Not tainted 4.4.172+ #13 [ 74.836938] 0000000000000000 d5ac284df4caada3 ffff8800b4f37930 ffffffff81aacde1 [ 74.844929] ffff8800b4efc740 0000000000000000 ffffffff82a860a0 ffffffff8292c040 [ 74.852938] 0000000000000002 ffff8800b4f37970 ffffffff81b0a993 ffff8800b4dece84 [ 74.860930] Call Trace: [ 74.863506] [] dump_stack+0xc1/0x120 [ 74.868847] [] check_preemption_disabled+0x1d3/0x200 [ 74.875576] [] __this_cpu_preempt_check+0x1d/0x30 [ 74.882046] [] tcp_try_coalesce+0x245/0x510 [ 74.887994] [] ? tcp_prune_ofo_queue.part.0+0x460/0x460 [ 74.894985] [] ? skb_copy_datagram_from_iter+0x32b/0x5c0 [ 74.902067] [] tcp_queue_rcv+0x127/0x6f0 [ 74.907755] [] tcp_send_rcvq+0x3de/0x4a0 [ 74.913441] [] ? tcp_rcv_established+0x2070/0x2070 [ 74.920002] [] ? trace_hardirqs_on_caller+0x385/0x5a0 [ 74.926816] [] ? lock_sock_nested+0x90/0x120 [ 74.932846] [] ? trace_hardirqs_on+0xd/0x10 [ 74.938812] [] ? __local_bh_enable_ip+0x6a/0xe0 [ 74.945105] [] tcp_sendmsg+0x2332/0x2ab0 [ 74.950790] [] ? trace_hardirqs_on+0x10/0x10 [ 74.956825] [] ? sock_has_perm+0x2a8/0x400 [ 74.962700] [] ? selinux_msg_queue_alloc_security+0x2e0/0x2e0 [ 74.970223] [] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 74.976949] [] ? tcp_sendpage+0x17c0/0x17c0 [ 74.982894] [] ? check_preemption_disabled+0x3c/0x200 [ 74.989708] [] ? check_preemption_disabled+0x3c/0x200 [ 74.996524] [] ? inet_sendmsg+0x143/0x4d0 [ 75.002307] [] inet_sendmsg+0x202/0x4d0 [ 75.007904] [] ? inet_sendmsg+0x76/0x4d0 [ 75.013588] [] ? inet_recvmsg+0x4d0/0x4d0 [ 75.019375] [] sock_sendmsg+0xbe/0x110 [ 75.024889] [] SyS_sendto+0x201/0x340 [ 75.030313] [] ? SyS_getpeername+0x2a0/0x2a0 [ 75.036353] [] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 75.043104] [] ? __might_fault+0x117/0x1d0 [ 75.048962] [] ? __might_fault+0x191/0x1d0 [ 75.054836] [] ? __might_fault+0xe7/0x1d0 [ 75.060611] [] ? SyS_clock_gettime+0x118/0x1e0 [ 75.066815] [] ? SyS_clock_settime+0x220/0x220 [ 75.073038] [] ? lockdep_sys_exit_thunk+0x12/0x14 [ 75.079508] [] entry_SYSCALL_64_fastpath+0x1e/0x9a 2019/01/29 22:10:09 executed programs: 530 [ 76.101314] BUG: using __this_cpu_add() in preemptible [00000000] code: syz-executor0/4640 [ 76.109788] caller is __this_cpu_preempt_check+0x1d/0x30 [ 76.115262] CPU: 1 PID: 4640 Comm: syz-executor0 Not tainted 4.4.172+ #13 [ 76.122202] 0000000000000000 e288c68dfadcfe4a ffff8801d2a7f930 ffffffff81aacde1 [ 76.122210] ffff8801d0ec4740 0000000000000001 ffffffff82a860a0 ffffffff8292c040 [ 76.122228] 0000000000000001 ffff8801d2a7f970 ffffffff81b0a993 ffff8801d5d1ed44 [ 76.122230] Call Trace: [ 76.122250] [] dump_stack+0xc1/0x120 [ 76.122257] [] check_preemption_disabled+0x1d3/0x200 [ 76.122264] [] __this_cpu_preempt_check+0x1d/0x30 [ 76.122273] [] tcp_try_coalesce+0x245/0x510 [ 76.122281] [] ? tcp_prune_ofo_queue.part.0+0x460/0x460 [ 76.122292] [] ? skb_copy_datagram_from_iter+0x32b/0x5c0 [ 76.122299] [] tcp_queue_rcv+0x127/0x6f0 [ 76.122307] [] tcp_send_rcvq+0x3de/0x4a0 [ 76.122315] [] ? tcp_rcv_established+0x2070/0x2070 [ 76.122324] [] ? trace_hardirqs_on_caller+0x385/0x5a0 [ 76.122331] [] ? lock_sock_nested+0x90/0x120 [ 76.122337] [] ? trace_hardirqs_on+0xd/0x10 [ 76.122345] [] ? __local_bh_enable_ip+0x6a/0xe0 [ 76.122352] [] tcp_sendmsg+0x2332/0x2ab0 [ 76.122359] [] ? trace_hardirqs_on+0x10/0x10 [ 76.122368] [] ? sock_has_perm+0x2a8/0x400 [ 76.122376] [] ? selinux_msg_queue_alloc_security+0x2e0/0x2e0 [ 76.122384] [] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 76.122391] [] ? tcp_sendpage+0x17c0/0x17c0 [ 76.122398] [] ? check_preemption_disabled+0x3c/0x200 [ 76.122404] [] ? check_preemption_disabled+0x3c/0x200 [ 76.122412] [] ? inet_sendmsg+0x143/0x4d0 [ 76.122420] [] inet_sendmsg+0x202/0x4d0 [ 76.122426] [] ? inet_sendmsg+0x76/0x4d0 [ 76.122432] [] ? inet_recvmsg+0x4d0/0x4d0 [ 76.122440] [] sock_sendmsg+0xbe/0x110 [ 76.122448] [] SyS_sendto+0x201/0x340 [ 76.122455] [] ? SyS_getpeername+0x2a0/0x2a0 [ 76.122462] [] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 76.122483] [] ? __might_fault+0x117/0x1d0 [ 76.122490] [] ? __might_fault+0x191/0x1d0 [ 76.122497] [] ? __might_fault+0xe7/0x1d0 [ 76.122504] [] ? SyS_clock_gettime+0x118/0x1e0 [ 76.122511] [] ? SyS_clock_settime+0x220/0x220 [ 76.122520] [] ? lockdep_sys_exit_thunk+0x12/0x14 [ 76.122541] [] entry_SYSCALL_64_fastpath+0x1e/0x9a [ 76.978228] BUG: using __this_cpu_add() in preemptible [00000000] code: syz-executor0/4847 [ 76.986838] caller is __this_cpu_preempt_check+0x1d/0x30 [ 76.992280] CPU: 0 PID: 4847 Comm: syz-executor0 Not tainted 4.4.172+ #13 [ 76.999181] 0000000000000000 e196ab255ded7952 ffff8800b362f930 ffffffff81aacde1 [ 77.007180] ffff8800b3594740 0000000000000000 ffffffff82a860a0 ffffffff8292c040 [ 77.015199] 0000000000000002 ffff8800b362f970 ffffffff81b0a993 ffff8801d0861d44 [ 77.023272] Call Trace: [ 77.025848] [] dump_stack+0xc1/0x120 [ 77.031200] [] check_preemption_disabled+0x1d3/0x200 [ 77.037940] [] __this_cpu_preempt_check+0x1d/0x30 [ 77.044411] [] tcp_try_coalesce+0x245/0x510 [ 77.050362] [] ? tcp_prune_ofo_queue.part.0+0x460/0x460 [ 77.057358] [] ? skb_copy_datagram_from_iter+0x32b/0x5c0 [ 77.064437] [] tcp_queue_rcv+0x127/0x6f0 [ 77.070131] [] tcp_send_rcvq+0x3de/0x4a0 [ 77.075825] [] ? tcp_rcv_established+0x2070/0x2070 [ 77.082393] [] ? trace_hardirqs_on_caller+0x385/0x5a0 [ 77.089219] [] ? lock_sock_nested+0x90/0x120 [ 77.095258] [] ? trace_hardirqs_on+0xd/0x10 [ 77.101220] [] ? __local_bh_enable_ip+0x6a/0xe0 [ 77.107523] [] tcp_sendmsg+0x2332/0x2ab0 [ 77.113219] [] ? trace_hardirqs_on+0x10/0x10 [ 77.119256] [] ? sock_has_perm+0x2a8/0x400 [ 77.125121] [] ? selinux_msg_queue_alloc_security+0x2e0/0x2e0 [ 77.132651] [] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 77.139384] [] ? tcp_sendpage+0x17c0/0x17c0 [ 77.145331] [] ? check_preemption_disabled+0x3c/0x200 [ 77.152146] [] ? check_preemption_disabled+0x3c/0x200 [ 77.158980] [] ? inet_sendmsg+0x143/0x4d0 [ 77.164754] [] inet_sendmsg+0x202/0x4d0 [ 77.170353] [] ? inet_sendmsg+0x76/0x4d0 [ 77.176043] [] ? inet_recvmsg+0x4d0/0x4d0 [ 77.181819] [] sock_sendmsg+0xbe/0x110 [ 77.187335] [] SyS_sendto+0x201/0x340 [ 77.192770] [] ? SyS_getpeername+0x2a0/0x2a0 [ 77.198808] [] ? debug_lockdep_rcu_enabled+0x71/0xa0 [ 77.205540] [] ? __might_fault+0x117/0x1d0 [ 77.211413] [] ? __might_fault+0x191/0x1d0 [ 77.217272] [] ? __might_fault+0xe7/0x1d0 [ 77.223045] [] ? SyS_clock_gettime+0x118/0x1e0 [ 77.229253] [] ? SyS_clock_settime+0x220/0x220 [ 77.235469] [] ? lockdep_sys_exit_thunk+0x12/0x14 [ 77.241951] [] entry_SYSCALL_64_fastpath+0x1e/0x9a