[ 18.045717] random: sshd: uninitialized urandom read (32 bytes read, 31 bits of entropy available) [....] 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: [ 20.584271] random: sshd: uninitialized urandom read (32 bytes read, 36 bits of entropy available) [ 20.924057] random: sshd: uninitialized urandom read (32 bytes read, 36 bits of entropy available) [ 21.806627] random: sshd: uninitialized urandom read (32 bytes read, 112 bits of entropy available) [ 28.242098] random: sshd: uninitialized urandom read (32 bytes read, 120 bits of entropy available) Warning: Permanently added '10.128.0.56' (ECDSA) to the list of known hosts. [ 33.672750] random: sshd: uninitialized urandom read (32 bytes read, 123 bits of entropy available) 2018/02/20 06:21:35 parsed 1 programs 2018/02/20 06:21:35 executed programs: 0 [ 34.018445] IPVS: Creating netns size=2552 id=1 [ 34.060406] IPVS: Creating netns size=2552 id=2 [ 34.094660] IPVS: Creating netns size=2552 id=3 [ 34.132854] IPVS: Creating netns size=2552 id=4 [ 34.185414] IPVS: Creating netns size=2552 id=5 [ 34.229065] IPVS: Creating netns size=2552 id=6 [ 34.306928] IPVS: Creating netns size=2552 id=7 [ 34.357008] IPVS: Creating netns size=2552 id=8 [ 37.990252] BUG: using __this_cpu_add() in preemptible [00000000] code: syz-executor5/5510 [ 37.998699] caller is __this_cpu_preempt_check+0x1c/0x20 [ 38.004470] CPU: 1 PID: 5510 Comm: syz-executor5 Not tainted 4.4.115-g55a366596 #15 [ 38.012251] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.021593] 0000000000000000 abfae72ae85c7be2 ffff8800aef67648 ffffffff81d03d8d [ 38.029649] 0000000000000001 ffffffff839fe4a0 ffffffff83cef860 ffff8800aec18000 [ 38.037695] 0000000000000003 ffff8800aef67688 ffffffff81d63cd4 ffffffff810002b8 [ 38.045756] Call Trace: [ 38.048334] [] dump_stack+0xc1/0x124 [ 38.053687] [] check_preemption_disabled+0x1d4/0x200 [ 38.060428] [] ? 0xffffffff810002b8 [ 38.065698] [] __this_cpu_preempt_check+0x1c/0x20 [ 38.072179] [] tcp_try_coalesce+0x249/0x4d0 [ 38.078143] [] ? tcp_parse_options+0x970/0x970 [ 38.084369] [] ? skb_copy_datagram_from_iter+0x38c/0x5a0 [ 38.091462] [] tcp_queue_rcv+0x127/0x720 [ 38.098242] [] tcp_send_rcvq+0x39b/0x450 [ 38.103944] [] ? tcp_rcv_established+0x2230/0x2230 [ 38.110517] [] ? tcp_sendpage+0x17f0/0x1830 [ 38.116482] [] ? lock_sock_nested+0xa2/0x120 [ 38.122530] [] ? lock_sock_nested+0x90/0x120 [ 38.128593] [] ? trace_hardirqs_on+0xd/0x10 [ 38.134552] [] ? __local_bh_enable_ip+0x6a/0xd0 [ 38.140859] [] tcp_sendmsg+0x1e8f/0x2b10 [ 38.146559] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 38.153563] [] ? sock_has_perm+0x1c1/0x400 [ 38.159438] [] ? tcp_sendpage+0x1830/0x1830 [ 38.165400] [] ? selinux_file_send_sigiotask+0x310/0x310 [ 38.172487] [] ? inet_sendmsg+0x73/0x4c0 [ 38.178188] [] ? move_addr_to_kernel.part.12+0xc5/0x110 [ 38.185190] [] ? inet_sendmsg+0x201/0x4c0 [ 38.190974] [] inet_sendmsg+0x2bc/0x4c0 [ 38.196591] [] ? inet_sendmsg+0x73/0x4c0 [ 38.202288] [] ? inet_recvmsg+0x4c0/0x4c0 [ 38.208072] [] sock_sendmsg+0xca/0x110 [ 38.213599] [] ___sys_sendmsg+0x6c1/0x7c0 [ 38.219395] [] ? copy_msghdr_from_user+0x550/0x550 [ 38.225980] [] ? inet_sendmsg+0x201/0x4c0 [ 38.225992] [] ? __fget+0x47/0x3b0 [ 38.225997] [] ? __fget+0x232/0x3b0 [ 38.226001] [] ? __fget+0x47/0x3b0 [ 38.226007] [] ? __fget_light+0xa1/0x1e0 [ 38.226012] [] ? __fdget+0x18/0x20 [ 38.226020] [] ? sockfd_lookup_light+0x118/0x160 [ 38.226032] [] __sys_sendmsg+0xd3/0x190 [ 38.226038] [] ? SyS_shutdown+0x1b0/0x1b0 [ 38.226046] [] ? compat_SyS_futex+0x1f9/0x2a0 [ 38.226054] [] ? scm_detach_fds_compat+0x3c0/0x3c0 [ 38.226059] [] compat_SyS_sendmsg+0x2a/0x40 [ 38.226065] [] ? compat_SyS_getsockopt+0x2a0/0x2a0 [ 38.226072] [] do_fast_syscall_32+0x314/0x890 [ 38.226081] [] sysenter_flags_fixed+0xd/0x17 [ 38.281765] BUG: using __this_cpu_add() in preemptible [00000000] code: syz-executor1/5573 [ 38.281776] caller is __this_cpu_preempt_check+0x1c/0x20 [ 38.281783] CPU: 0 PID: 5573 Comm: syz-executor1 Not tainted 4.4.115-g55a366596 #15 [ 38.281787] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.281797] 0000000000000000 808c67da9ed81b4a ffff8801d9417648 ffffffff81d03d8d [ 38.281804] 0000000000000000 ffffffff839fe4a0 ffffffff83cef860 ffff8800ae709800 [ 38.281812] 0000000000000003 ffff8801d9417688 ffffffff81d63cd4 ffffffff810002b8 [ 38.281814] Call Trace: [ 38.281824] [] dump_stack+0xc1/0x124 [ 38.281831] [] check_preemption_disabled+0x1d4/0x200 [ 38.281836] [] ? 0xffffffff810002b8 [ 38.281842] [] __this_cpu_preempt_check+0x1c/0x20 [ 38.281851] [] tcp_try_coalesce+0x249/0x4d0 [ 38.281858] [] ? tcp_parse_options+0x970/0x970 [ 38.281867] [] ? skb_copy_datagram_from_iter+0x38c/0x5a0 [ 38.281873] [] tcp_queue_rcv+0x127/0x720 [ 38.281880] [] tcp_send_rcvq+0x39b/0x450 [ 38.281886] [] ? tcp_rcv_established+0x2230/0x2230 [ 38.281893] [] ? tcp_sendpage+0x17f0/0x1830 [ 38.281900] [] ? lock_sock_nested+0xa2/0x120 [ 38.281907] [] ? lock_sock_nested+0x90/0x120 [ 38.281915] [] ? trace_hardirqs_on+0xd/0x10 [ 38.281923] [] ? __local_bh_enable_ip+0x6a/0xd0 [ 38.281930] [] tcp_sendmsg+0x1e8f/0x2b10 [ 38.281937] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 38.281945] [] ? sock_has_perm+0x1c1/0x400 [ 38.281952] [] ? tcp_sendpage+0x1830/0x1830 [ 38.281960] [] ? selinux_file_send_sigiotask+0x310/0x310 [ 38.281968] [] ? inet_sendmsg+0x73/0x4c0 [ 38.281976] [] ? move_addr_to_kernel.part.12+0xc5/0x110 2018/02/20 06:21:40 executed programs: 111 [ 38.281982] [] ? inet_sendmsg+0x201/0x4c0 [ 38.281988] [] inet_sendmsg+0x2bc/0x4c0 [ 38.281994] [] ? inet_sendmsg+0x73/0x4c0 [ 38.282001] [] ? inet_recvmsg+0x4c0/0x4c0 [ 38.282007] [] sock_sendmsg+0xca/0x110 [ 38.282014] [] ___sys_sendmsg+0x6c1/0x7c0 [ 38.282021] [] ? copy_msghdr_from_user+0x550/0x550 [ 38.282027] [] ? inet_sendmsg+0x201/0x4c0 [ 38.282034] [] ? __fget+0x47/0x3b0 [ 38.282040] [] ? __fget+0x232/0x3b0 [ 38.282046] [] ? __fget+0x47/0x3b0 [ 38.282052] [] ? __fget_light+0xa1/0x1e0 [ 38.282058] [] ? __fdget+0x18/0x20 [ 38.282064] [] ? sockfd_lookup_light+0x118/0x160 [ 38.282071] [] __sys_sendmsg+0xd3/0x190 [ 38.282078] [] ? SyS_shutdown+0x1b0/0x1b0 [ 38.282085] [] ? compat_SyS_futex+0x1f9/0x2a0 [ 38.282093] [] ? scm_detach_fds_compat+0x3c0/0x3c0 [ 38.282099] [] compat_SyS_sendmsg+0x2a/0x40 [ 38.282105] [] ? compat_SyS_getsockopt+0x2a0/0x2a0 [ 38.282112] [] do_fast_syscall_32+0x314/0x890 [ 38.282120] [] sysenter_flags_fixed+0xd/0x17 [ 38.983151] BUG: using __this_cpu_add() in preemptible [00000000] code: syz-executor0/5770 [ 38.983162] caller is __this_cpu_preempt_check+0x1c/0x20 [ 38.983173] CPU: 1 PID: 5770 Comm: syz-executor0 Not tainted 4.4.115-g55a366596 #15 [ 38.983176] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.983185] 0000000000000000 0e7e9b6258f7761a ffff8801c9747648 ffffffff81d03d8d [ 38.983192] 0000000000000001 ffffffff839fe4a0 ffffffff83cef860 ffff8800bb206000 [ 38.983199] 0000000000000003 ffff8801c9747688 ffffffff81d63cd4 ffffffff810002b8 [ 38.983201] Call Trace: [ 38.983210] [] dump_stack+0xc1/0x124 [ 38.983216] [] check_preemption_disabled+0x1d4/0x200 [ 38.983221] [] ? 0xffffffff810002b8 [ 38.983227] [] __this_cpu_preempt_check+0x1c/0x20 [ 38.983235] [] tcp_try_coalesce+0x249/0x4d0 [ 38.983241] [] ? tcp_parse_options+0x970/0x970 [ 38.983250] [] ? skb_copy_datagram_from_iter+0x38c/0x5a0 [ 38.983257] [] tcp_queue_rcv+0x127/0x720 [ 38.983262] [] tcp_send_rcvq+0x39b/0x450 [ 38.983268] [] ? tcp_rcv_established+0x2230/0x2230 [ 38.983274] [] ? tcp_sendpage+0x17f0/0x1830 [ 38.983281] [] ? lock_sock_nested+0xa2/0x120 [ 38.983287] [] ? lock_sock_nested+0x90/0x120 [ 38.983295] [] ? trace_hardirqs_on+0xd/0x10 [ 38.983302] [] ? __local_bh_enable_ip+0x6a/0xd0 [ 38.983309] [] tcp_sendmsg+0x1e8f/0x2b10 [ 38.983315] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 38.983322] [] ? sock_has_perm+0x1c1/0x400 [ 38.983329] [] ? tcp_sendpage+0x1830/0x1830 [ 38.983335] [] ? selinux_file_send_sigiotask+0x310/0x310 [ 38.983342] [] ? inet_sendmsg+0x73/0x4c0 [ 38.983349] [] ? move_addr_to_kernel.part.12+0xc5/0x110 [ 38.983355] [] ? inet_sendmsg+0x201/0x4c0 [ 38.983361] [] inet_sendmsg+0x2bc/0x4c0 [ 38.983366] [] ? inet_sendmsg+0x73/0x4c0 [ 38.983372] [] ? inet_recvmsg+0x4c0/0x4c0 [ 38.983378] [] sock_sendmsg+0xca/0x110 [ 38.983384] [] ___sys_sendmsg+0x6c1/0x7c0 [ 38.983390] [] ? copy_msghdr_from_user+0x550/0x550 [ 38.983396] [] ? inet_sendmsg+0x201/0x4c0 [ 38.983403] [] ? __fget+0x47/0x3b0 [ 38.983409] [] ? __fget+0x232/0x3b0 [ 38.983414] [] ? __fget+0x47/0x3b0 [ 38.983420] [] ? __fget_light+0xa1/0x1e0 [ 38.983425] [] ? __fdget+0x18/0x20 [ 38.983431] [] ? sockfd_lookup_light+0x118/0x160 [ 38.983437] [] __sys_sendmsg+0xd3/0x190 [ 38.983443] [] ? SyS_shutdown+0x1b0/0x1b0 [ 38.983451] [] ? compat_SyS_futex+0x1f9/0x2a0 [ 38.983459] [] ? scm_detach_fds_compat+0x3c0/0x3c0 [ 38.983464] [] compat_SyS_sendmsg+0x2a/0x40 [ 38.983470] [] ? compat_SyS_getsockopt+0x2a0/0x2a0 [ 38.983477] [] do_fast_syscall_32+0x314/0x890 [ 38.983486] [] sysenter_flags_fixed+0xd/0x17 [ 38.989088] BUG: using __this_cpu_add() in preemptible [00000000] code: syz-executor7/5771 [ 38.989099] caller is __this_cpu_preempt_check+0x1c/0x20 [ 38.989105] CPU: 1 PID: 5771 Comm: syz-executor7 Not tainted 4.4.115-g55a366596 #15 [ 38.989108] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.989115] 0000000000000000 8dbbb120df0a629a ffff8801c9797648 ffffffff81d03d8d [ 38.989121] 0000000000000001 ffffffff839fe4a0 ffffffff83cef860 ffff8801d9538000 [ 38.989126] 0000000000000003 ffff8801c9797688 ffffffff81d63cd4 ffffffff810002b8 [ 38.989127] Call Trace: [ 38.989137] [] dump_stack+0xc1/0x124 [ 38.989143] [] check_preemption_disabled+0x1d4/0x200 [ 38.989147] [] ? 0xffffffff810002b8 [ 38.989152] [] __this_cpu_preempt_check+0x1c/0x20 [ 38.989161] [] tcp_try_coalesce+0x249/0x4d0 [ 38.989169] [] ? tcp_parse_options+0x970/0x970 [ 38.989179] [] ? skb_copy_datagram_from_iter+0x38c/0x5a0 [ 38.989187] [] tcp_queue_rcv+0x127/0x720 [ 38.989193] [] tcp_send_rcvq+0x39b/0x450 [ 38.989198] [] ? tcp_rcv_established+0x2230/0x2230 [ 38.989205] [] ? tcp_sendpage+0x17f0/0x1830 [ 38.989212] [] ? lock_sock_nested+0xa2/0x120 [ 38.989218] [] ? lock_sock_nested+0x90/0x120 [ 38.989225] [] ? trace_hardirqs_on+0xd/0x10 [ 38.989232] [] ? __local_bh_enable_ip+0x6a/0xd0 [ 38.989239] [] tcp_sendmsg+0x1e8f/0x2b10 [ 38.989244] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 38.989251] [] ? sock_has_perm+0x1c1/0x400 [ 38.989258] [] ? tcp_sendpage+0x1830/0x1830 [ 38.989265] [] ? selinux_file_send_sigiotask+0x310/0x310 [ 38.989273] [] ? inet_sendmsg+0x73/0x4c0 [ 38.989280] [] ? move_addr_to_kernel.part.12+0xc5/0x110 [ 38.989285] [] ? inet_sendmsg+0x201/0x4c0 [ 38.989292] [] inet_sendmsg+0x2bc/0x4c0 [ 38.989297] [] ? inet_sendmsg+0x73/0x4c0 [ 38.989303] [] ? inet_recvmsg+0x4c0/0x4c0 [ 38.989309] [] sock_sendmsg+0xca/0x110 [ 38.989314] [] ___sys_sendmsg+0x6c1/0x7c0 [ 38.989321] [] ? copy_msghdr_from_user+0x550/0x550 [ 38.989326] [] ? inet_sendmsg+0x201/0x4c0 [ 38.989335] [] ? __fget+0x47/0x3b0 [ 38.989340] [] ? __fget+0x232/0x3b0 [ 38.989344] [] ? __fget+0x47/0x3b0 [ 38.989350] [] ? __fget_light+0xa1/0x1e0 [ 38.989355] [] ? __fdget+0x18/0x20 [ 38.989361] [] ? sockfd_lookup_light+0x118/0x160 [ 38.989367] [] __sys_sendmsg+0xd3/0x190 [ 38.989374] [] ? SyS_shutdown+0x1b0/0x1b0 [ 38.989380] [] ? compat_SyS_futex+0x1f9/0x2a0 [ 38.989387] [] ? scm_detach_fds_compat+0x3c0/0x3c0 [ 38.989393] [] compat_SyS_sendmsg+0x2a/0x40 [ 38.989398] [] ? compat_SyS_getsockopt+0x2a0/0x2a0 [ 38.989404] [] do_fast_syscall_32+0x314/0x890 [ 38.989413] [] sysenter_flags_fixed+0xd/0x17 [ 39.625863] BUG: using __this_cpu_add() in preemptible [00000000] code: syz-executor5/5921 [ 39.625873] caller is __this_cpu_preempt_check+0x1c/0x20 [ 39.625881] CPU: 0 PID: 5921 Comm: syz-executor5 Not tainted 4.4.115-g55a366596 #15 [ 39.625884] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.625894] 0000000000000000 81282323aa08f740 ffff8801ca5a7648 ffffffff81d03d8d [ 39.625901] 0000000000000000 ffffffff839fe4a0 ffffffff83cef860 ffff8800bb010000 [ 39.625909] 0000000000000003 ffff8801ca5a7688 ffffffff81d63cd4 ffffffff810002b8 [ 39.625910] Call Trace: [ 39.625920] [] dump_stack+0xc1/0x124 [ 39.625926] [] check_preemption_disabled+0x1d4/0x200 [ 39.625931] [] ? 0xffffffff810002b8 [ 39.625937] [] __this_cpu_preempt_check+0x1c/0x20 [ 39.625946] [] tcp_try_coalesce+0x249/0x4d0 [ 39.625953] [] ? tcp_parse_options+0x970/0x970 [ 39.625961] [] ? skb_copy_datagram_from_iter+0x38c/0x5a0 [ 39.625968] [] tcp_queue_rcv+0x127/0x720 [ 39.625974] [] tcp_send_rcvq+0x39b/0x450 [ 39.625980] [] ? tcp_rcv_established+0x2230/0x2230 [ 39.625987] [] ? tcp_sendpage+0x17f0/0x1830 [ 39.625995] [] ? lock_sock_nested+0xa2/0x120 [ 39.626002] [] ? lock_sock_nested+0x90/0x120 [ 39.626010] [] ? trace_hardirqs_on+0xd/0x10 [ 39.626019] [] ? __local_bh_enable_ip+0x6a/0xd0 [ 39.626026] [] tcp_sendmsg+0x1e8f/0x2b10 [ 39.626032] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 39.626041] [] ? sock_has_perm+0x1c1/0x400 [ 39.626049] [] ? tcp_sendpage+0x1830/0x1830 [ 39.626056] [] ? selinux_file_send_sigiotask+0x310/0x310 [ 39.626064] [] ? inet_sendmsg+0x73/0x4c0 [ 39.626071] [] ? move_addr_to_kernel.part.12+0xc5/0x110 [ 39.626078] [] ? inet_sendmsg+0x201/0x4c0 [ 39.626084] [] inet_sendmsg+0x2bc/0x4c0 [ 39.626090] [] ? inet_sendmsg+0x73/0x4c0 [ 39.626097] [] ? inet_recvmsg+0x4c0/0x4c0 [ 39.626103] [] sock_sendmsg+0xca/0x110 [ 39.626109] [] ___sys_sendmsg+0x6c1/0x7c0 [ 39.626115] [] ? copy_msghdr_from_user+0x550/0x550 [ 39.626122] [] ? inet_sendmsg+0x201/0x4c0 [ 39.626130] [] ? __fget+0x47/0x3b0 [ 39.626136] [] ? __fget+0x232/0x3b0 [ 39.626141] [] ? __fget+0x47/0x3b0 [ 39.626147] [] ? __fget_light+0xa1/0x1e0 [ 39.626153] [] ? __fdget+0x18/0x20 [ 39.626160] [] ? sockfd_lookup_light+0x118/0x160 [ 39.626166] [] __sys_sendmsg+0xd3/0x190 [ 39.626173] [] ? SyS_shutdown+0x1b0/0x1b0 [ 39.626180] [] ? compat_SyS_futex+0x1f9/0x2a0 [ 39.626186] [] ? scm_detach_fds_compat+0x3c0/0x3c0 [ 39.626191] [] compat_SyS_sendmsg+0x2a/0x40 [ 39.626197] [] ? compat_SyS_getsockopt+0x2a0/0x2a0 [ 39.626204] [] do_fast_syscall_32+0x314/0x890 [ 39.626213] [] sysenter_flags_fixed+0xd/0x17 [ 41.395189] BUG: using __this_cpu_add() in preemptible [00000000] code: syz-executor6/6314 [ 41.403677] caller is __this_cpu_preempt_check+0x1c/0x20 [ 41.409114] CPU: 1 PID: 6314 Comm: syz-executor6 Not tainted 4.4.115-g55a366596 #15 [ 41.416888] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 41.426227] 0000000000000000 c947ad4b0ad3183e ffff8801d70c7648 ffffffff81d03d8d [ 41.434248] 0000000000000001 ffffffff839fe4a0 ffffffff83cef860 ffff8801d87f6000 [ 41.442261] 0000000000000003 ffff8801d70c7688 ffffffff81d63cd4 ffffffff810002b8 [ 41.450273] Call Trace: [ 41.452849] [] dump_stack+0xc1/0x124 [ 41.458199] [] check_preemption_disabled+0x1d4/0x200 [ 41.464931] [] ? 0xffffffff810002b8 [ 41.470197] [] __this_cpu_preempt_check+0x1c/0x20 [ 41.476679] [] tcp_try_coalesce+0x249/0x4d0 [ 41.482641] [] ? tcp_parse_options+0x970/0x970 [ 41.488866] [] ? skb_copy_datagram_from_iter+0x38c/0x5a0 [ 41.495958] [] tcp_queue_rcv+0x127/0x720 [ 41.501666] [] tcp_send_rcvq+0x39b/0x450 [ 41.507354] [] ? tcp_rcv_established+0x2230/0x2230 [ 41.513921] [] ? tcp_sendpage+0x17f0/0x1830 [ 41.519881] [] ? lock_sock_nested+0xa2/0x120 [ 41.525928] [] ? lock_sock_nested+0x90/0x120 [ 41.531973] [] ? trace_hardirqs_on+0xd/0x10 [ 41.537934] [] ? __local_bh_enable_ip+0x6a/0xd0 [ 41.544240] [] tcp_sendmsg+0x1e8f/0x2b10 [ 41.549938] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 41.556938] [] ? sock_has_perm+0x1c1/0x400 [ 41.562806] [] ? tcp_sendpage+0x1830/0x1830 [ 41.568767] [] ? selinux_file_send_sigiotask+0x310/0x310 [ 41.575854] [] ? inet_sendmsg+0x73/0x4c0 [ 41.581557] [] ? move_addr_to_kernel.part.12+0xc5/0x110 [ 41.588562] [] ? inet_sendmsg+0x201/0x4c0 [ 41.594349] [] inet_sendmsg+0x2bc/0x4c0 [ 41.599960] [] ? inet_sendmsg+0x73/0x4c0 [ 41.605659] [] ? inet_recvmsg+0x4c0/0x4c0 [ 41.611442] [] sock_sendmsg+0xca/0x110 [ 41.616965] [] ___sys_sendmsg+0x6c1/0x7c0 [ 41.622751] [] ? copy_msghdr_from_user+0x550/0x550 [ 41.629316] [] ? inet_sendmsg+0x201/0x4c0 [ 41.635098] [] ? __fget+0x47/0x3b0 [ 41.640274] [] ? __fget+0x232/0x3b0 [ 41.645537] [] ? __fget+0x47/0x3b0 [ 41.650710] [] ? __fget_light+0xa1/0x1e0 [ 41.656407] [] ? __fdget+0x18/0x20 [ 41.661845] [] ? sockfd_lookup_light+0x118/0x160 [ 41.668235] [] __sys_sendmsg+0xd3/0x190 [ 41.673843] [] ? SyS_shutdown+0x1b0/0x1b0 [ 41.679627] [] ? compat_SyS_futex+0x1f9/0x2a0 [ 41.685750] [] ? scm_detach_fds_compat+0x3c0/0x3c0 [ 41.692298] [] compat_SyS_sendmsg+0x2a/0x40 [ 41.698238] [] ? compat_SyS_getsockopt+0x2a0/0x2a0 [ 41.704789] [] do_fast_syscall_32+0x314/0x890 [ 41.710914] [] sysenter_flags_fixed+0xd/0x17 [ 43.106437] BUG: using __this_cpu_add() in preemptible [00000000] code: syz-executor6/6733 [ 43.115187] caller is __this_cpu_preempt_check+0x1c/0x20 [ 43.120906] CPU: 1 PID: 6733 Comm: syz-executor6 Not tainted 4.4.115-g55a366596 #15 [ 43.128685] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.138024] 0000000000000000 efc415ecdb34d101 ffff8801d7e9f648 ffffffff81d03d8d [ 43.146048] 0000000000000001 ffffffff839fe4a0 ffffffff83cef860 ffff8800add23000 [ 43.154055] 0000000000000003 ffff8801d7e9f688 ffffffff81d63cd4 ffffffff810002b8 [ 43.162082] Call Trace: [ 43.164659] [] dump_stack+0xc1/0x124 [ 43.170011] [] check_preemption_disabled+0x1d4/0x200 [ 43.176747] [] ? 0xffffffff810002b8 [ 43.182018] [] __this_cpu_preempt_check+0x1c/0x20 [ 43.188512] [] tcp_try_coalesce+0x249/0x4d0 [ 43.194480] [] ? tcp_parse_options+0x970/0x970 [ 43.200711] [] ? skb_copy_datagram_from_iter+0x38c/0x5a0 [ 43.207819] [] tcp_queue_rcv+0x127/0x720 [ 43.213529] [] tcp_send_rcvq+0x39b/0x450 [ 43.219234] [] ? tcp_rcv_established+0x2230/0x2230 [ 43.225810] [] ? tcp_sendpage+0x17f0/0x1830 [ 43.231782] [] ? lock_sock_nested+0xa2/0x120 [ 43.237825] [] ? lock_sock_nested+0x90/0x120 [ 43.243869] [] ? trace_hardirqs_on+0xd/0x10 [ 43.249828] [] ? __local_bh_enable_ip+0x6a/0xd0 [ 43.256132] [] tcp_sendmsg+0x1e8f/0x2b10 [ 43.261843] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 43.268845] [] ? sock_has_perm+0x1c1/0x400 [ 43.274721] [] ? tcp_sendpage+0x1830/0x1830 [ 43.280685] [] ? selinux_file_send_sigiotask+0x310/0x310 [ 43.287772] [] ? inet_sendmsg+0x73/0x4c0 [ 43.293473] [] ? move_addr_to_kernel.part.12+0xc5/0x110 [ 43.300486] [] ? inet_sendmsg+0x201/0x4c0 [ 43.306277] [] inet_sendmsg+0x2bc/0x4c0 [ 43.311887] [] ? inet_sendmsg+0x73/0x4c0 [ 43.317593] [] ? inet_recvmsg+0x4c0/0x4c0 [ 43.323380] [] sock_sendmsg+0xca/0x110 [ 43.328904] [] ___sys_sendmsg+0x6c1/0x7c0 [ 43.334690] [] ? copy_msghdr_from_user+0x550/0x550 [ 43.341238] [] ? inet_sendmsg+0x201/0x4c0 [ 43.347007] [] ? __fget+0x47/0x3b0 [ 43.352179] [] ? __fget+0x232/0x3b0 [ 43.357422] [] ? __fget+0x47/0x3b0 [ 43.362582] [] ? __fget_light+0xa1/0x1e0 [ 43.368262] [] ? __fdget+0x18/0x20 [ 43.373422] [] ? sockfd_lookup_light+0x118/0x160 [ 43.379795] [] __sys_sendmsg+0xd3/0x190 [ 43.385386] [] ? SyS_shutdown+0x1b0/0x1b0 [ 43.391154] [] ? compat_SyS_futex+0x1f9/0x2a0 [ 43.397270] [] ? scm_detach_fds_compat+0x3c0/0x3c0 [ 43.403827] [] compat_SyS_sendmsg+0x2a/0x40 [ 43.409769] [] ? compat_SyS_getsockopt+0x2a0/0x2a0 [ 43.416322] [] do_fast_syscall_32+0x314/0x890 [ 43.422445] [] sysenter_flags_fixed+0xd/0x17 [ 43.889077] BUG: using __this_cpu_add() in preemptible [00000000] code: syz-executor6/6913 [ 43.897822] caller is __this_cpu_preempt_check+0x1c/0x20 [ 43.903482] CPU: 1 PID: 6913 Comm: syz-executor6 Not tainted 4.4.115-g55a366596 #15 [ 43.911266] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.920607] 0000000000000000 c05e357c6c8ab378 ffff8801d7af7648 ffffffff81d03d8d [ 43.928660] 0000000000000001 ffffffff839fe4a0 ffffffff83cef860 ffff8801d7a9e000 [ 43.936678] 0000000000000003 ffff8801d7af7688 ffffffff81d63cd4 ffffffff810002b8 [ 43.944696] Call Trace: [ 43.947268] [] dump_stack+0xc1/0x124 [ 43.952619] [] check_preemption_disabled+0x1d4/0x200 [ 43.959357] [] ? 0xffffffff810002b8 [ 43.964624] [] __this_cpu_preempt_check+0x1c/0x20 [ 43.971109] [] tcp_try_coalesce+0x249/0x4d0 [ 43.977070] [] ? tcp_parse_options+0x970/0x970 [ 43.983297] [] ? skb_copy_datagram_from_iter+0x38c/0x5a0 [ 43.990392] [] tcp_queue_rcv+0x127/0x720 [ 43.996100] [] tcp_send_rcvq+0x39b/0x450 [ 44.001799] [] ? tcp_rcv_established+0x2230/0x2230 [ 44.008365] [] ? tcp_sendpage+0x17f0/0x1830 [ 44.014323] [] ? lock_sock_nested+0xa2/0x120 [ 44.020371] [] ? lock_sock_nested+0x90/0x120 [ 44.026415] [] ? trace_hardirqs_on+0xd/0x10 [ 44.032374] [] ? __local_bh_enable_ip+0x6a/0xd0 2018/02/20 06:21:45 executed programs: 500 [ 44.038678] [] tcp_sendmsg+0x1e8f/0x2b10 [ 44.044377] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 44.051391] [] ? sock_has_perm+0x1c1/0x400 [ 44.057277] [] ? tcp_sendpage+0x1830/0x1830 [ 44.063249] [] ? selinux_file_send_sigiotask+0x310/0x310 [ 44.070341] [] ? inet_sendmsg+0x73/0x4c0 [ 44.076054] [] ? move_addr_to_kernel.part.12+0xc5/0x110 [ 44.083058] [] ? inet_sendmsg+0x201/0x4c0 [ 44.088843] [] inet_sendmsg+0x2bc/0x4c0 [ 44.094451] [] ? inet_sendmsg+0x73/0x4c0 [ 44.100739] [] ? inet_recvmsg+0x4c0/0x4c0 [ 44.106525] [] sock_sendmsg+0xca/0x110 [ 44.112047] [] ___sys_sendmsg+0x6c1/0x7c0 [ 44.117831] [] ? copy_msghdr_from_user+0x550/0x550 [ 44.124396] [] ? inet_sendmsg+0x201/0x4c0 [ 44.130178] [] ? __fget+0x47/0x3b0 [ 44.137110] [] ? __fget+0x232/0x3b0 [ 44.142374] [] ? __fget+0x47/0x3b0 [ 44.147553] [] ? __fget_light+0xa1/0x1e0 [ 44.153267] [] ? __fdget+0x18/0x20 [ 44.158444] [] ? sockfd_lookup_light+0x118/0x160 [ 44.164831] [] __sys_sendmsg+0xd3/0x190 [ 44.170438] [] ? SyS_shutdown+0x1b0/0x1b0 [ 44.176224] [] ? compat_SyS_futex+0x1f9/0x2a0 [ 44.182359] [] ? scm_detach_fds_compat+0x3c0/0x3c0 [ 44.188924] [] compat_SyS_sendmsg+0x2a/0x40 [ 44.194865] [] ? compat_SyS_getsockopt+0x2a0/0x2a0 [ 44.201416] [] do_fast_syscall_32+0x314/0x890 [ 44.207534] [] sysenter_flags_fixed+0xd/0x17 [ 47.512719] BUG: using __this_cpu_add() in preemptible [00000000] code: syz-executor3/7886 [ 47.521508] caller is __this_cpu_preempt_check+0x1c/0x20 [ 47.526956] CPU: 1 PID: 7886 Comm: syz-executor3 Not tainted 4.4.115-g55a366596 #15 [ 47.534741] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.544088] 0000000000000000 0702c9f892bbac07 ffff8801d42df648 ffffffff81d03d8d [ 47.552103] 0000000000000001 ffffffff839fe4a0 ffffffff83cef860 ffff8801d3e06000 [ 47.560152] 0000000000000003 ffff8801d42df688 ffffffff81d63cd4 ffffffff810002b8 [ 47.568183] Call Trace: [ 47.570762] [] dump_stack+0xc1/0x124 [ 47.576115] [] check_preemption_disabled+0x1d4/0x200 [ 47.582850] [] ? 0xffffffff810002b8 [ 47.588117] [] __this_cpu_preempt_check+0x1c/0x20 [ 47.594595] [] tcp_try_coalesce+0x249/0x4d0 [ 47.600551] [] ? tcp_parse_options+0x970/0x970 [ 47.606773] [] ? skb_copy_datagram_from_iter+0x38c/0x5a0 [ 47.613855] [] tcp_queue_rcv+0x127/0x720 [ 47.619551] [] tcp_send_rcvq+0x39b/0x450 [ 47.625248] [] ? tcp_rcv_established+0x2230/0x2230 [ 47.631827] [] ? tcp_sendpage+0x17f0/0x1830 [ 47.637794] [] ? lock_sock_nested+0xa2/0x120 [ 47.643846] [] ? lock_sock_nested+0x90/0x120 [ 47.650027] [] ? trace_hardirqs_on+0xd/0x10 [ 47.655989] [] ? __local_bh_enable_ip+0x6a/0xd0 [ 47.662293] [] tcp_sendmsg+0x1e8f/0x2b10 [ 47.667989] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 47.674992] [] ? sock_has_perm+0x1c1/0x400 [ 47.680867] [] ? tcp_sendpage+0x1830/0x1830 [ 47.686829] [] ? selinux_file_send_sigiotask+0x310/0x310 [ 47.693915] [] ? inet_sendmsg+0x73/0x4c0 [ 47.699614] [] ? move_addr_to_kernel.part.12+0xc5/0x110 [ 47.706617] [] ? inet_sendmsg+0x201/0x4c0 [ 47.712400] [] inet_sendmsg+0x2bc/0x4c0 [ 47.718011] [] ? inet_sendmsg+0x73/0x4c0 [ 47.723703] [] ? inet_recvmsg+0x4c0/0x4c0 [ 47.729483] [] sock_sendmsg+0xca/0x110 [ 47.735011] [] ___sys_sendmsg+0x6c1/0x7c0 [ 47.740788] [] ? copy_msghdr_from_user+0x550/0x550 [ 47.747346] [] ? inet_sendmsg+0x201/0x4c0 [ 47.753123] [] ? __fget+0x47/0x3b0 [ 47.758293] [] ? __fget+0x232/0x3b0 [ 47.763549] [] ? __fget+0x47/0x3b0 [ 47.768717] [] ? __fget_light+0xa1/0x1e0 [ 47.774407] [] ? __fdget+0x18/0x20 [ 47.779569] [] ? sockfd_lookup_light+0x118/0x160 [ 47.785946] [] __sys_sendmsg+0xd3/0x190 [ 47.791537] [] ? SyS_shutdown+0x1b0/0x1b0 [ 47.797303] [] ? compat_SyS_futex+0x1f9/0x2a0 [ 47.803419] [] ? scm_detach_fds_compat+0x3c0/0x3c0 [ 47.809964] [] compat_SyS_sendmsg+0x2a/0x40 [ 47.815901] [] ? compat_SyS_getsockopt+0x2a0/0x2a0 [ 47.822449] [] do_fast_syscall_32+0x314/0x890 [ 47.828563] [] sysenter_flags_fixed+0xd/0x17 [ 47.961164] BUG: using __this_cpu_add() in preemptible [00000000] code: syz-executor5/7973 [ 47.969638] caller is __this_cpu_preempt_check+0x1c/0x20 [ 47.975126] CPU: 0 PID: 7973 Comm: syz-executor5 Not tainted 4.4.115-g55a366596 #15 [ 47.982911] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.992246] 0000000000000000 bf6830699f978b5c ffff8800b7bdf648 ffffffff81d03d8d [ 48.000269] 0000000000000000 ffffffff839fe4a0 ffffffff83cef860 ffff8801d3f14800