[....] 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 syzkaller login: [ 26.411867] random: sshd: uninitialized urandom read (32 bytes read, 41 bits of entropy available) [ 26.731015] random: sshd: uninitialized urandom read (32 bytes read, 41 bits of entropy available) [ 27.749719] random: sshd: uninitialized urandom read (32 bytes read, 121 bits of entropy available) [ 27.920179] random: sshd: uninitialized urandom read (32 bytes read, 126 bits of entropy available) [ 28.031211] random: nonblocking pool is initialized Warning: Permanently added '10.128.15.198' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 33.887487] BUG: using __this_cpu_add() in preemptible [00000000] code: syzkaller329544/4193 [ 33.896161] caller is __this_cpu_preempt_check+0x1c/0x20 [ 33.901603] CPU: 1 PID: 4193 Comm: syzkaller329544 Not tainted 4.4.113-g962d1f3 #2 [ 33.909300] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.918651] 0000000000000000[ 33.920816] BUG: using __this_cpu_add() in preemptible [00000000] code: syzkaller329544/4190 [ 33.920830] caller is __this_cpu_preempt_check+0x1c/0x20 [ 33.935542] fd7018f0feec2ce5 ffff8801d7657648 ffffffff81d028ed [ 33.942242] 0000000000000001 ffffffff839fe3a0 ffffffff83cef6a0 ffff8801d7218000 [ 33.950244] 0000000000000003 ffff8801d7657688 ffffffff81d62834 ffffffff810002b8 [ 33.958243] Call Trace: [ 33.960815] [] dump_stack+0xc1/0x124 [ 33.966157] [] check_preemption_disabled+0x1d4/0x200 [ 33.972884] [] ? 0xffffffff810002b8 [ 33.978137] [] __this_cpu_preempt_check+0x1c/0x20 [ 33.984611] [] tcp_try_coalesce+0x249/0x4d0 [ 33.990560] [] ? tcp_parse_options+0x970/0x970 [ 33.996770] [] ? skb_copy_datagram_from_iter+0x38c/0x5a0 [ 34.003848] [] tcp_queue_rcv+0x127/0x720 [ 34.009536] [] tcp_send_rcvq+0x39b/0x450 [ 34.015224] [] ? tcp_rcv_established+0x2230/0x2230 [ 34.021785] [] ? do_softirq.part.17+0x40/0x60 [ 34.027912] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 34.034732] [] ? lock_sock_nested+0x90/0x120 [ 34.040767] [] ? trace_hardirqs_on+0xd/0x10 [ 34.046713] [] ? __local_bh_enable_ip+0x6a/0xd0 [ 34.053012] [] tcp_sendmsg+0x1e8f/0x2b10 [ 34.058701] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 34.065695] [] ? sock_has_perm+0x1c2/0x3e0 [ 34.071561] [] ? tcp_sendpage+0x1830/0x1830 [ 34.077512] [] ? inet_sendmsg+0x201/0x4c0 [ 34.083287] [] inet_sendmsg+0x2bc/0x4c0 [ 34.088885] [] ? inet_sendmsg+0x73/0x4c0 [ 34.094576] [] ? inet_recvmsg+0x4c0/0x4c0 [ 34.100352] [] sock_sendmsg+0xca/0x110 [ 34.105866] [] ___sys_sendmsg+0x6c1/0x7c0 [ 34.111645] [] ? copy_msghdr_from_user+0x550/0x550 [ 34.118207] [] ? __fget+0x232/0x3b0 [ 34.123461] [] ? __fget+0x47/0x3b0 [ 34.128626] [] ? __fget_light+0xa1/0x1e0 [ 34.134314] [] ? __fdget+0x18/0x20 [ 34.139482] [] ? sockfd_lookup_light+0x118/0x160 [ 34.145867] [] __sys_sendmsg+0xd3/0x190 [ 34.151468] [] ? SyS_shutdown+0x1b0/0x1b0 [ 34.157247] [] ? __fd_install+0x224/0x5f0 [ 34.163047] [] ? __do_page_fault+0x380/0xa00 [ 34.169082] [] compat_SyS_sendmsg+0x2a/0x40 [ 34.175030] [] ? compat_SyS_getsockopt+0x2a0/0x2a0 [ 34.181587] [] do_fast_syscall_32+0x314/0x890 executing program executing program [ 34.187710] [] sysenter_flags_fixed+0xd/0x17 [ 34.193749] CPU: 0 PID: 4190 Comm: syzkaller329544 Not tainted 4.4.113-g962d1f3 #2 [ 34.201464] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.210817] 0000000000000000 8a11bd650a938412 ffff8801d72b7648 ffffffff81d028ed [ 34.218928] 0000000000000000 ffffffff839fe3a0 ffffffff83cef6a0 ffff8801d737c740 [ 34.227043] 0000000000000003 ffff8801d72b7688 ffffffff81d62834 ffffffff810002b8 [ 34.235103] Call Trace: executing program executing program executing program [ 34.237687] [] dump_stack+0xc1/0x124 [ 34.243048] [] check_preemption_disabled+0x1d4/0x200 [ 34.249791] [] ? 0xffffffff810002b8 [ 34.255068] [] __this_cpu_preempt_check+0x1c/0x20 [ 34.261556] [] tcp_try_coalesce+0x249/0x4d0 [ 34.267525] [] ? tcp_parse_options+0x970/0x970 [ 34.273762] [] ? skb_copy_datagram_from_iter+0x38c/0x5a0 [ 34.280875] [] tcp_queue_rcv+0x127/0x720 executing program [ 34.286589] [] tcp_send_rcvq+0x39b/0x450 [ 34.292306] [] ? tcp_rcv_established+0x2230/0x2230 [ 34.298884] [] ? do_softirq.part.17+0x40/0x60 [ 34.305033] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 34.311870] [] ? lock_sock_nested+0x90/0x120 [ 34.317920] [] ? trace_hardirqs_on+0xd/0x10 [ 34.323888] [] ? __local_bh_enable_ip+0x6a/0xd0 [ 34.330201] [] tcp_sendmsg+0x1e8f/0x2b10 executing program executing program [ 34.335913] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 34.342933] [] ? sock_has_perm+0x1c2/0x3e0 [ 34.348817] [] ? tcp_sendpage+0x1830/0x1830 [ 34.354801] [] ? inet_sendmsg+0x201/0x4c0 [ 34.360608] [] inet_sendmsg+0x2bc/0x4c0 [ 34.366245] [] ? inet_sendmsg+0x73/0x4c0 [ 34.371955] [] ? inet_recvmsg+0x4c0/0x4c0 [ 34.377763] [] sock_sendmsg+0xca/0x110 [ 34.383310] [] ___sys_sendmsg+0x6c1/0x7c0 executing program executing program [ 34.389115] [] ? copy_msghdr_from_user+0x550/0x550 [ 34.395733] [] ? __alloc_pages_direct_compact+0x250/0x250 [ 34.402919] [] ? __fget+0x232/0x3b0 [ 34.408189] [] ? __fget+0x47/0x3b0 [ 34.413371] [] ? __fget_light+0xa1/0x1e0 [ 34.419072] [] ? __fdget+0x18/0x20 [ 34.424256] [] ? sockfd_lookup_light+0x118/0x160 [ 34.430666] [] __sys_sendmsg+0xd3/0x190 executing program executing program executing program executing program executing program executing program executing program [ 34.436302] [] ? SyS_shutdown+0x1b0/0x1b0 [ 34.442093] [] ? __do_page_fault+0x380/0xa00 [ 34.448146] [] compat_SyS_sendmsg+0x2a/0x40 [ 34.454109] [] ? compat_SyS_getsockopt+0x2a0/0x2a0 [ 34.460684] [] do_fast_syscall_32+0x314/0x890 [ 34.466825] [] sysenter_flags_fixed+0xd/0x17 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 36.862777] BUG: using __this_cpu_add() in preemptible [00000000] code: syzkaller329544/4890 [ 36.871422] caller is __this_cpu_preempt_check+0x1c/0x20 [ 36.877224] CPU: 1 PID: 4890 Comm: syzkaller329544 Not tainted 4.4.113-g962d1f3 #2 [ 36.884915] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.894252] 0000000000000000 297cd3b348f3e561 ffff8800b7b27648 ffffffff81d028ed [ 36.902264] 0000000000000001 ffffffff839fe3a0 ffffffff83cef6a0 ffff8801c4a25f00 [ 36.910277] 0000000000000003 ffff8800b7b27688 ffffffff81d62834 ffffffff810002b8 [ 36.918286] Call Trace: [ 36.920861] [] dump_stack+0xc1/0x124 [ 36.926205] [] check_preemption_disabled+0x1d4/0x200 [ 36.932936] [] ? 0xffffffff810002b8 [ 36.938193] [] __this_cpu_preempt_check+0x1c/0x20 [ 36.944666] [] tcp_try_coalesce+0x249/0x4d0 [ 36.950619] [] ? tcp_parse_options+0x970/0x970 executing program [ 36.956837] [] ? skb_copy_datagram_from_iter+0x38c/0x5a0 [ 36.963916] [] tcp_queue_rcv+0x127/0x720 [ 36.969606] [] tcp_send_rcvq+0x39b/0x450 [ 36.975298] [] ? tcp_rcv_established+0x2230/0x2230 [ 36.981877] [] ? do_softirq.part.17+0x40/0x60 [ 36.988022] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 36.994854] [] ? lock_sock_nested+0x90/0x120 [ 37.000897] [] ? trace_hardirqs_on+0xd/0x10 [ 37.006858] [] ? __local_bh_enable_ip+0x6a/0xd0 executing program executing program executing program executing program [ 37.013169] [] tcp_sendmsg+0x1e8f/0x2b10 [ 37.018865] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 37.025872] [] ? sock_has_perm+0x1c2/0x3e0 [ 37.031758] [] ? tcp_sendpage+0x1830/0x1830 [ 37.037730] [] ? inet_sendmsg+0x201/0x4c0 [ 37.043538] [] inet_sendmsg+0x2bc/0x4c0 [ 37.049163] [] ? inet_sendmsg+0x73/0x4c0 [ 37.054864] [] ? inet_recvmsg+0x4c0/0x4c0 executing program executing program [ 37.060657] [] sock_sendmsg+0xca/0x110 [ 37.066192] [] ___sys_sendmsg+0x6c1/0x7c0 [ 37.071994] [] ? copy_msghdr_from_user+0x550/0x550 [ 37.078605] [] ? finish_task_switch+0x1bb/0x4e0 [ 37.084921] [] ? __schedule+0xa26/0x1c70 [ 37.090626] [] ? __fget+0x232/0x3b0 [ 37.095898] [] ? __fget+0x47/0x3b0 [ 37.101082] [] ? __fget_light+0xa1/0x1e0 [ 37.106777] [] ? __fdget+0x18/0x20 executing program executing program [ 37.111958] [] ? sockfd_lookup_light+0x118/0x160 [ 37.118363] [] __sys_sendmsg+0xd3/0x190 [ 37.123978] [] ? SyS_shutdown+0x1b0/0x1b0 [ 37.129764] [] ? __fd_install+0x224/0x5f0 [ 37.135566] [] ? __do_page_fault+0x380/0xa00 [ 37.141624] [] compat_SyS_sendmsg+0x2a/0x40 [ 37.147588] [] ? compat_SyS_getsockopt+0x2a0/0x2a0 [ 37.154214] [] do_fast_syscall_32+0x314/0x890 [ 37.160368] [] sysenter_flags_fixed+0xd/0x17 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 37.501018] BUG: using __this_cpu_add() in preemptible [00000000] code: syzkaller329544/4980 [ 37.510113] caller is __this_cpu_preempt_check+0x1c/0x20 [ 37.515594] CPU: 0 PID: 4980 Comm: syzkaller329544 Not tainted 4.4.113-g962d1f3 #2 [ 37.524128] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.533488] 0000000000000000 [ 37.533488] BUG: using __this_cpu_add() in preemptible [00000000] code: syzkaller329544/4996 [ 37.533502] caller is __this_cpu_preempt_check+0x1c/0x20 [ 37.550540] 22461ad9ae1e83cb ffff8800b88bf648 ffffffff81d028ed [ 37.556946] 0000000000000000 ffffffff839fe3a0 ffffffff83cef6a0 ffff8800b7ad4740 [ 37.564949] 0000000000000003 ffff8800b88bf688 ffffffff81d62834 ffffffff810002b8 [ 37.572946] Call Trace: [ 37.575513] [] dump_stack+0xc1/0x124 [ 37.580855] [] check_preemption_disabled+0x1d4/0x200 [ 37.587585] [] ? 0xffffffff810002b8 [ 37.592863] [] __this_cpu_preempt_check+0x1c/0x20 [ 37.599337] [] tcp_try_coalesce+0x249/0x4d0 [ 37.605287] [] ? tcp_parse_options+0x970/0x970 [ 37.611585] [] ? skb_copy_datagram_from_iter+0x38c/0x5a0 [ 37.618678] [] tcp_queue_rcv+0x127/0x720 [ 37.624368] [] tcp_send_rcvq+0x39b/0x450 [ 37.630054] [] ? tcp_rcv_established+0x2230/0x2230 [ 37.636614] [] ? do_softirq.part.17+0x40/0x60 [ 37.642740] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 37.649561] [] ? lock_sock_nested+0x90/0x120 [ 37.655596] [] ? trace_hardirqs_on+0xd/0x10 [ 37.661543] [] ? __local_bh_enable_ip+0x6a/0xd0 [ 37.667838] [] tcp_sendmsg+0x1e8f/0x2b10 [ 37.673524] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 37.680517] [] ? sock_has_perm+0x1c2/0x3e0 [ 37.686378] [] ? tcp_sendpage+0x1830/0x1830 [ 37.692330] [] ? inet_sendmsg+0x201/0x4c0 [ 37.698103] [] inet_sendmsg+0x2bc/0x4c0 [ 37.703706] [] ? inet_sendmsg+0x73/0x4c0 [ 37.709408] [] ? inet_recvmsg+0x4c0/0x4c0 [ 37.715184] [] sock_sendmsg+0xca/0x110 [ 37.720696] [] ___sys_sendmsg+0x6c1/0x7c0 [ 37.726470] [] ? copy_msghdr_from_user+0x550/0x550 [ 37.733027] [] ? __alloc_pages_direct_compact+0x250/0x250 [ 37.740195] [] ? __fget+0x232/0x3b0 [ 37.745467] [] ? __fget+0x47/0x3b0 [ 37.750633] [] ? __fget_light+0xa1/0x1e0 [ 37.756320] [] ? __fdget+0x18/0x20 [ 37.761487] [] ? sockfd_lookup_light+0x118/0x160 [ 37.767868] [] __sys_sendmsg+0xd3/0x190 [ 37.773468] [] ? SyS_shutdown+0x1b0/0x1b0 [ 37.779245] [] ? __do_page_fault+0x380/0xa00 [ 37.785282] [] compat_SyS_sendmsg+0x2a/0x40 [ 37.791238] [] ? compat_SyS_getsockopt+0x2a0/0x2a0 executing program executing program executing program [ 37.797794] [] do_fast_syscall_32+0x314/0x890 [ 37.803920] [] sysenter_flags_fixed+0xd/0x17 [ 37.809957] CPU: 1 PID: 4996 Comm: syzkaller329544 Not tainted 4.4.113-g962d1f3 #2 [ 37.817669] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.827046] 0000000000000000 b80aec3399360e71 ffff8801d68df648 ffffffff81d028ed [ 37.835147] 0000000000000001 ffffffff839fe3a0 ffffffff83cef6a0 ffff8801d4f0df00 [ 37.843169] 0000000000000003 ffff8801d68df688 ffffffff81d62834 ffffffff810002b8 executing program [ 37.851256] Call Trace: [ 37.854637] [] dump_stack+0xc1/0x124 [ 37.860002] [] check_preemption_disabled+0x1d4/0x200 [ 37.866757] [] ? 0xffffffff810002b8 [ 37.872033] [] __this_cpu_preempt_check+0x1c/0x20 [ 37.878519] [] tcp_try_coalesce+0x249/0x4d0 [ 37.884493] [] ? tcp_parse_options+0x970/0x970 [ 37.890742] [] ? skb_copy_datagram_from_iter+0x38c/0x5a0 [ 37.897852] [] tcp_queue_rcv+0x127/0x720 executing program executing program [ 37.903554] [] tcp_send_rcvq+0x39b/0x450 [ 37.909255] [] ? tcp_rcv_established+0x2230/0x2230 [ 37.915825] [] ? do_softirq.part.17+0x40/0x60 [ 37.921965] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 37.928801] [] ? lock_sock_nested+0x90/0x120 [ 37.934861] [] ? trace_hardirqs_on+0xd/0x10 [ 37.940870] [] ? __local_bh_enable_ip+0x6a/0xd0 [ 37.947194] [] tcp_sendmsg+0x1e8f/0x2b10 executing program executing program executing program executing program [ 37.952896] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 37.959902] [] ? sock_has_perm+0x1c2/0x3e0 [ 37.965780] [] ? tcp_sendpage+0x1830/0x1830 [ 37.971759] [] ? inet_sendmsg+0x201/0x4c0 [ 37.977561] [] inet_sendmsg+0x2bc/0x4c0 [ 37.983196] [] ? inet_sendmsg+0x73/0x4c0 [ 37.988941] [] ? inet_recvmsg+0x4c0/0x4c0 [ 37.994748] [] sock_sendmsg+0xca/0x110 executing program executing program [ 38.000300] [] ___sys_sendmsg+0x6c1/0x7c0 [ 38.006142] [] ? copy_msghdr_from_user+0x550/0x550 [ 38.012722] [] ? finish_task_switch+0x1bb/0x4e0 [ 38.019043] [] ? __schedule+0xa26/0x1c70 [ 38.024750] [] ? __fget+0x232/0x3b0 [ 38.030033] [] ? __fget+0x47/0x3b0 [ 38.035215] [] ? __fget_light+0xa1/0x1e0 [ 38.040930] [] ? __fdget+0x18/0x20 [ 38.046147] [] ? sockfd_lookup_light+0x118/0x160 executing program executing program executing program executing program executing program executing program executing program [ 38.052545] [] __sys_sendmsg+0xd3/0x190 [ 38.058165] [] ? SyS_shutdown+0x1b0/0x1b0 [ 38.063962] [] ? __do_page_fault+0x380/0xa00 [ 38.070014] [] compat_SyS_sendmsg+0x2a/0x40 [ 38.075984] [] ? compat_SyS_getsockopt+0x2a0/0x2a0 [ 38.082560] [] do_fast_syscall_32+0x314/0x890 [ 38.088706] [] sysenter_flags_fixed+0xd/0x17 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 40.245780] BUG: using __this_cpu_add() in preemptible [00000000] code: syzkaller329544/5643 [ 40.254615] caller is __this_cpu_preempt_check+0x1c/0x20 [ 40.260070] CPU: 0 PID: 5643 Comm: syzkaller329544 Not tainted 4.4.113-g962d1f3 #2 [ 40.267774] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.277140] 0000000000000000 a65ed8cd7f5d758b ffff8801d6d07648 ffffffff81d028ed [ 40.285226] 0000000000000000 ffffffff839fe3a0 ffffffff83cef6a0 ffff8800b6b9df00 [ 40.293248] 0000000000000003 ffff8801d6d07688 ffffffff81d62834 ffffffff810002b8 [ 40.301352] Call Trace: [ 40.303941] [] dump_stack+0xc1/0x124 [ 40.309309] [] check_preemption_disabled+0x1d4/0x200 [ 40.316848] [] ? 0xffffffff810002b8 [ 40.322120] [] __this_cpu_preempt_check+0x1c/0x20 [ 40.328603] [] tcp_try_coalesce+0x249/0x4d0 [ 40.334564] [] ? tcp_parse_options+0x970/0x970 [ 40.340789] [] ? skb_copy_datagram_from_iter+0x38c/0x5a0 [ 40.347886] [] tcp_queue_rcv+0x127/0x720 [ 40.353607] [] tcp_send_rcvq+0x39b/0x450 [ 40.359320] [] ? tcp_rcv_established+0x2230/0x2230 [ 40.365886] [] ? do_softirq.part.17+0x40/0x60 [ 40.372019] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 40.378852] [] ? lock_sock_nested+0x90/0x120 [ 40.384905] [] ? trace_hardirqs_on+0xd/0x10 [ 40.390877] [] ? __local_bh_enable_ip+0x6a/0xd0 [ 40.397197] [] tcp_sendmsg+0x1e8f/0x2b10 [ 40.402910] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 40.409926] [] ? sock_has_perm+0x1c2/0x3e0 [ 40.415809] [] ? tcp_sendpage+0x1830/0x1830 [ 40.421807] [] ? inet_sendmsg+0x201/0x4c0 [ 40.427602] [] inet_sendmsg+0x2bc/0x4c0 [ 40.433218] [] ? inet_sendmsg+0x73/0x4c0 [ 40.438916] [] ? inet_recvmsg+0x4c0/0x4c0 [ 40.444710] [] sock_sendmsg+0xca/0x110 [ 40.450246] [] ___sys_sendmsg+0x6c1/0x7c0 [ 40.456036] [] ? copy_msghdr_from_user+0x550/0x550 [ 40.462610] [] ? trace_hardirqs_on_thunk+0x17/0x19 [ 40.469194] [] ? __fget+0x232/0x3b0 [ 40.474479] [] ? __fget+0x47/0x3b0 [ 40.479668] [] ? __fget_light+0xa1/0x1e0 [ 40.485378] [] ? __fdget+0x18/0x20 [ 40.490575] [] ? sockfd_lookup_light+0x118/0x160 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 40.496996] [] __sys_sendmsg+0xd3/0x190 [ 40.502631] [] ? SyS_shutdown+0x1b0/0x1b0 [ 40.508436] [] ? __fd_install+0x224/0x5f0 [ 40.514339] [] ? __do_page_fault+0x380/0xa00 [ 40.520410] [] compat_SyS_sendmsg+0x2a/0x40 [ 40.526376] [] ? compat_SyS_getsockopt+0x2a0/0x2a0 [ 40.532949] [] do_fast_syscall_32+0x314/0x890 [ 40.539090] [] sysenter_flags_fixed+0xd/0x17 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 40.839541] BUG: using __this_cpu_add() in preemptible [00000000] code: syzkaller329544/5769 [ 40.848605] caller is __this_cpu_preempt_check+0x1c/0x20 [ 40.854160] CPU: 1 PID: 5769 Comm: syzkaller329544 Not tainted 4.4.113-g962d1f3 #2 [ 40.861856] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.871232] 0000000000000000 68bb65b74d9b214c ffff8800b580f648 ffffffff81d028ed [ 40.879283] 0000000000000001 ffffffff839fe3a0 ffffffff83cef6a0 ffff8800b68297c0 executing program executing program executing program [ 40.887304] 0000000000000003 ffff8800b580f688 ffffffff81d62834 ffffffff810002b8 [ 40.895325] Call Trace: [ 40.897908] [] dump_stack+0xc1/0x124 [ 40.903274] [] check_preemption_disabled+0x1d4/0x200 [ 40.910030] [] ? 0xffffffff810002b8 [ 40.915315] [] __this_cpu_preempt_check+0x1c/0x20 [ 40.921804] [] tcp_try_coalesce+0x249/0x4d0 [ 40.927776] [] ? tcp_parse_options+0x970/0x970 executing program executing program executing program [ 40.934035] [] ? skb_copy_datagram_from_iter+0x38c/0x5a0 [ 40.941129] [] tcp_queue_rcv+0x127/0x720 [ 40.946833] [] tcp_send_rcvq+0x39b/0x450 [ 40.952545] [] ? tcp_rcv_established+0x2230/0x2230 [ 40.959132] [] ? do_softirq.part.17+0x40/0x60 [ 40.965276] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 40.972108] [] ? lock_sock_nested+0x90/0x120 [ 40.978170] [] ? trace_hardirqs_on+0xd/0x10 executing program executing program [ 40.984139] [] ? __local_bh_enable_ip+0x6a/0xd0 [ 40.990478] [] tcp_sendmsg+0x1e8f/0x2b10 [ 40.996207] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 41.003228] [] ? sock_has_perm+0x1c2/0x3e0 [ 41.009110] [] ? tcp_sendpage+0x1830/0x1830 [ 41.015073] [] ? inet_sendmsg+0x201/0x4c0 [ 41.020863] [] inet_sendmsg+0x2bc/0x4c0 [ 41.026478] [] ? inet_sendmsg+0x73/0x4c0 [ 41.032178] [] ? inet_recvmsg+0x4c0/0x4c0 executing program executing program executing program [ 41.037971] [] sock_sendmsg+0xca/0x110 [ 41.043519] [] ___sys_sendmsg+0x6c1/0x7c0 [ 41.049328] [] ? copy_msghdr_from_user+0x550/0x550 [ 41.055908] [] ? finish_task_switch+0x1bb/0x4e0 [ 41.062224] [] ? __schedule+0xa26/0x1c70 [ 41.067956] [] ? __fget+0x232/0x3b0 [ 41.073226] [] ? __fget+0x47/0x3b0 [ 41.078405] [] ? __fget_light+0xa1/0x1e0 [ 41.084111] [] ? __fdget+0x18/0x20 executing program executing program [ 41.089309] [] ? sockfd_lookup_light+0x118/0x160 [ 41.095716] [] __sys_sendmsg+0xd3/0x190 [ 41.101338] [] ? SyS_shutdown+0x1b0/0x1b0 [ 41.107143] [] ? __fd_install+0x224/0x5f0 [ 41.112950] [] ? __do_page_fault+0x380/0xa00 [ 41.119004] [] compat_SyS_sendmsg+0x2a/0x40 [ 41.124969] [] ? compat_SyS_getsockopt+0x2a0/0x2a0 [ 41.131548] [] do_fast_syscall_32+0x314/0x890 executing program executing program executing program [ 41.137689] [] sysenter_flags_fixed+0xd/0x17 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 41.924328] BUG: using __this_cpu_add() in preemptible [00000000] code: syzkaller329544/5987 [ 41.932994] caller is __this_cpu_preempt_check+0x1c/0x20 [ 41.938456] CPU: 1 PID: 5987 Comm: syzkaller329544 Not tainted 4.4.113-g962d1f3 #2 [ 41.946151] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.955496] 0000000000000000 3d71e4cace58743b ffff8801d43af648 ffffffff81d028ed [ 41.963598] 0000000000000001 ffffffff839fe3a0 ffffffff83cef6a0 ffff8800b685df00 executing program [ 41.971658] 0000000000000003 ffff8801d43af688 ffffffff81d62834 ffffffff810002b8 [ 41.979710] Call Trace: [ 41.982292] [] dump_stack+0xc1/0x124 [ 41.987656] [] check_preemption_disabled+0x1d4/0x200 [ 41.994394] [] ? 0xffffffff810002b8 [ 41.999661] [] __this_cpu_preempt_check+0x1c/0x20 [ 42.006177] [] tcp_try_coalesce+0x249/0x4d0 [ 42.012148] [] ? tcp_parse_options+0x970/0x970 executing program executing program [ 42.018386] [] ? skb_copy_datagram_from_iter+0x38c/0x5a0 [ 42.025484] [] tcp_queue_rcv+0x127/0x720 [ 42.031190] [] tcp_send_rcvq+0x39b/0x450 [ 42.036895] [] ? tcp_rcv_established+0x2230/0x2230 [ 42.043467] [] ? do_softirq.part.17+0x40/0x60 [ 42.049607] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 42.056436] [] ? lock_sock_nested+0x90/0x120 [ 42.062488] [] ? trace_hardirqs_on+0xd/0x10 [ 42.068462] [] ? __local_bh_enable_ip+0x6a/0xd0 executing program executing program [ 42.074789] [] tcp_sendmsg+0x1e8f/0x2b10 [ 42.080530] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 42.087545] [] ? sock_has_perm+0x1c2/0x3e0 [ 42.093439] [] ? tcp_sendpage+0x1830/0x1830 [ 42.099416] [] ? inet_sendmsg+0x201/0x4c0 [ 42.105222] [] inet_sendmsg+0x2bc/0x4c0 [ 42.110873] [] ? inet_sendmsg+0x73/0x4c0 [ 42.116578] [] ? inet_recvmsg+0x4c0/0x4c0 executing program executing program [ 42.122367] [] sock_sendmsg+0xca/0x110 [ 42.127892] [] ___sys_sendmsg+0x6c1/0x7c0 [ 42.133692] [] ? copy_msghdr_from_user+0x550/0x550 [ 42.140308] [] ? __alloc_pages_direct_compact+0x250/0x250 [ 42.147502] [] ? __fget+0x232/0x3b0 [ 42.152777] [] ? __fget+0x47/0x3b0 [ 42.157957] [] ? __fget_light+0xa1/0x1e0 [ 42.163657] [] ? __fdget+0x18/0x20 [ 42.168850] [] ? sockfd_lookup_light+0x118/0x160 executing program executing program executing program executing program executing program [ 42.175271] [] __sys_sendmsg+0xd3/0x190 [ 42.180892] [] ? SyS_shutdown+0x1b0/0x1b0 [ 42.186688] [] ? __fd_install+0x224/0x5f0 [ 42.192492] [] ? __do_page_fault+0x380/0xa00 [ 42.198571] [] compat_SyS_sendmsg+0x2a/0x40 [ 42.204551] [] ? compat_SyS_getsockopt+0x2a0/0x2a0 [ 42.211130] [] do_fast_syscall_32+0x314/0x890 [ 42.217272] [] sysenter_flags_fixed+0xd/0x17 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 42.420727] BUG: using __this_cpu_add() in preemptible [00000000] code: syzkaller329544/6082 [ 42.429430] caller is __this_cpu_preempt_check+0x1c/0x20 [ 42.434908] CPU: 1 PID: 6082 Comm: syzkaller329544 Not tainted 4.4.113-g962d1f3 #2 [ 42.442603] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.451951] 0000000000000000 d6909f729e203e27 ffff8801d4737648 ffffffff81d028ed [ 42.460000] 0000000000000001 ffffffff839fe3a0 ffffffff83cef6a0 ffff8801c5dc8000 executing program executing program executing program [ 42.468102] 0000000000000003 ffff8801d4737688 ffffffff81d62834 ffffffff810002b8 [ 42.476144] Call Trace: [ 42.478723] [] dump_stack+0xc1/0x124 [ 42.484082] [] check_preemption_disabled+0x1d4/0x200 [ 42.490829] [] ? 0xffffffff810002b8 [ 42.496118] [] __this_cpu_preempt_check+0x1c/0x20 [ 42.502618] [] tcp_try_coalesce+0x249/0x4d0 [ 42.508600] [] ? tcp_parse_options+0x970/0x970 executing program executing program executing program executing program [ 42.514826] [] ? skb_copy_datagram_from_iter+0x38c/0x5a0 [ 42.521918] [] tcp_queue_rcv+0x127/0x720 [ 42.527622] [] tcp_send_rcvq+0x39b/0x450 [ 42.533327] [] ? tcp_rcv_established+0x2230/0x2230 [ 42.539899] [] ? do_softirq.part.17+0x40/0x60 [ 42.546043] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 42.552897] [] ? lock_sock_nested+0x90/0x120 [ 42.558954] [] ? trace_hardirqs_on+0xd/0x10 [ 42.564918] [] ? __local_bh_enable_ip+0x6a/0xd0 executing program executing program [ 42.571250] [] tcp_sendmsg+0x1e8f/0x2b10 [ 42.576984] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 42.584006] [] ? sock_has_perm+0x1c2/0x3e0 [ 42.589888] [] ? tcp_sendpage+0x1830/0x1830 [ 42.595850] [] ? inet_sendmsg+0x201/0x4c0 [ 42.601637] [] inet_sendmsg+0x2bc/0x4c0 [ 42.607251] [] ? inet_sendmsg+0x73/0x4c0 [ 42.612946] [] ? inet_recvmsg+0x4c0/0x4c0 executing program [ 42.618733] [] sock_sendmsg+0xca/0x110 [ 42.624259] [] ___sys_sendmsg+0x6c1/0x7c0 [ 42.630050] [] ? copy_msghdr_from_user+0x550/0x550 [ 42.636627] [] ? retint_kernel+0x2d/0x2d [ 42.642352] [] ? __fget+0x232/0x3b0 [ 42.648674] [] ? __fget+0x47/0x3b0 [ 42.653859] [] ? __fget_light+0xa1/0x1e0 [ 42.659566] [] ? __fdget+0x18/0x20 [ 42.664780] [] ? sockfd_lookup_light+0x118/0x160 executing program executing program executing program executing program executing program executing program executing program [ 42.671176] [] __sys_sendmsg+0xd3/0x190 [ 42.676789] [] ? SyS_shutdown+0x1b0/0x1b0 [ 42.682588] [] ? __fd_install+0x224/0x5f0 [ 42.688384] [] ? __do_page_fault+0x380/0xa00 [ 42.694439] [] compat_SyS_sendmsg+0x2a/0x40 [ 42.700406] [] ? compat_SyS_getsockopt+0x2a0/0x2a0 [ 42.706977] [] do_fast_syscall_32+0x314/0x890 [ 42.713116] [] sysenter_flags_fixed+0xd/0x17 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program