[ 22.832122] random: sshd: uninitialized urandom read (32 bytes read, 34 bits of entropy available) [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 26.597462] random: sshd: uninitialized urandom read (32 bytes read, 39 bits of entropy available) [ 27.029039] random: sshd: uninitialized urandom read (32 bytes read, 39 bits of entropy available) [ 27.980648] random: sshd: uninitialized urandom read (32 bytes read, 113 bits of entropy available) [ 28.144506] random: sshd: uninitialized urandom read (32 bytes read, 116 bits of entropy available) Warning: Permanently added '10.128.0.30' (ECDSA) to the list of known hosts. [ 33.517556] random: sshd: uninitialized urandom read (32 bytes read, 121 bits of entropy available) executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 34.052805] BUG: using __this_cpu_add() in preemptible [00000000] code: syzkaller716561/4145 [ 34.061489] caller is __this_cpu_preempt_check+0x1c/0x20 [ 34.067264] CPU: 0 PID: 4145 Comm: syzkaller716561 Not tainted 4.4.114-ga81d322 #4 [ 34.074962] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 34.084304] 0000000000000000 b693122e3c7c4733 ffff8801d7bef648 ffffffff81d0394d [ 34.092333] 0000000000000000 ffffffff839fe3a0 ffffffff83cef720 ffff8801d75cb000 executing program executing program [ 34.100416] 0000000000000003 ffff8801d7bef688 ffffffff81d63894 ffffffff810002b8 [ 34.108453] Call Trace: [ 34.111031] [] dump_stack+0xc1/0x124 [ 34.116384] [] check_preemption_disabled+0x1d4/0x200 [ 34.123149] [] ? 0xffffffff810002b8 [ 34.128428] [] __this_cpu_preempt_check+0x1c/0x20 [ 34.134917] [] tcp_try_coalesce+0x249/0x4d0 [ 34.140894] [] ? tcp_parse_options+0x970/0x970 executing program executing program [ 34.147142] [] ? skb_copy_datagram_from_iter+0x38c/0x5a0 [ 34.154241] [] tcp_queue_rcv+0x127/0x720 [ 34.159947] [] tcp_send_rcvq+0x39b/0x450 [ 34.165664] [] ? tcp_rcv_established+0x2230/0x2230 [ 34.172255] [] ? do_softirq.part.17+0x40/0x60 [ 34.178413] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 34.185253] [] ? lock_sock_nested+0x90/0x120 [ 34.191305] [] ? trace_hardirqs_on+0xd/0x10 [ 34.197278] [] ? __local_bh_enable_ip+0x6a/0xd0 executing program executing program [ 34.203593] [] tcp_sendmsg+0x1e8f/0x2b10 [ 34.209303] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 34.216332] [] ? sock_has_perm+0x1c2/0x3e0 [ 34.222215] [] ? tcp_sendpage+0x1830/0x1830 [ 34.228190] [] ? inet_sendmsg+0x201/0x4c0 [ 34.233995] [] inet_sendmsg+0x2bc/0x4c0 [ 34.239623] [] ? inet_sendmsg+0x73/0x4c0 [ 34.245335] [] ? inet_recvmsg+0x4c0/0x4c0 executing program executing program executing program [ 34.251129] [] sock_sendmsg+0xca/0x110 [ 34.256664] [] ___sys_sendmsg+0x6c1/0x7c0 [ 34.262468] [] ? copy_msghdr_from_user+0x550/0x550 [ 34.269054] [] ? finish_task_switch+0x1bb/0x4e0 [ 34.275370] [] ? __schedule+0xa26/0x1ca0 [ 34.281080] [] ? __fget+0x20b/0x3b0 [ 34.286355] [] ? __fget+0x232/0x3b0 [ 34.291632] [] ? __fget+0x47/0x3b0 [ 34.296830] [] ? __fget_light+0xa1/0x1e0 executing program executing program executing program [ 34.302555] [] ? __fdget+0x18/0x20 [ 34.307764] [] ? sockfd_lookup_light+0x118/0x160 [ 34.314174] [] __sys_sendmsg+0xd3/0x190 [ 34.319808] [] ? SyS_shutdown+0x1b0/0x1b0 [ 34.325605] [] ? __do_page_fault+0x380/0xa00 [ 34.331656] [] compat_SyS_sendmsg+0x2a/0x40 [ 34.337624] [] ? compat_SyS_getsockopt+0x2a0/0x2a0 [ 34.344207] [] do_fast_syscall_32+0x314/0x890 executing program executing program [ 34.350362] [] 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 [ 36.410009] random: nonblocking pool is initialized executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 36.859977] BUG: using __this_cpu_add() in preemptible [00000000] code: syzkaller716561/4871 [ 36.868675] caller is __this_cpu_preempt_check+0x1c/0x20 [ 36.874168] CPU: 0 PID: 4871 Comm: syzkaller716561 Not tainted 4.4.114-ga81d322 #4 [ 36.881871] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.891226] 0000000000000000 51edef661fc0d8cb ffff8800b9057648 ffffffff81d0394d [ 36.899275] 0000000000000000 ffffffff839fe3a0 ffffffff83cef720 ffff8800ac330000 executing program [ 36.907317] 0000000000000003 ffff8800b9057688 ffffffff81d63894 ffffffff810002b8 [ 36.915360] Call Trace: [ 36.917940] [] dump_stack+0xc1/0x124 [ 36.923297] [] check_preemption_disabled+0x1d4/0x200 [ 36.930055] [] ? 0xffffffff810002b8 [ 36.935329] [] __this_cpu_preempt_check+0x1c/0x20 [ 36.941822] [] tcp_try_coalesce+0x249/0x4d0 [ 36.947787] [] ? tcp_parse_options+0x970/0x970 executing program executing program executing program [ 36.954013] [] ? skb_copy_datagram_from_iter+0x38c/0x5a0 [ 36.961106] [] tcp_queue_rcv+0x127/0x720 [ 36.966817] [] tcp_send_rcvq+0x39b/0x450 [ 36.972528] [] ? tcp_rcv_established+0x2230/0x2230 [ 36.979115] [] ? do_softirq.part.17+0x40/0x60 [ 36.985263] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 36.992115] [] ? lock_sock_nested+0x90/0x120 [ 36.998169] [] ? trace_hardirqs_on+0xd/0x10 [ 37.004139] [] ? __local_bh_enable_ip+0x6a/0xd0 executing program executing program [ 37.010483] [] tcp_sendmsg+0x1e8f/0x2b10 [ 37.016201] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 37.023214] [] ? sock_has_perm+0x1c2/0x3e0 [ 37.029098] [] ? tcp_sendpage+0x1830/0x1830 [ 37.035074] [] ? inet_sendmsg+0x201/0x4c0 [ 37.040864] [] inet_sendmsg+0x2bc/0x4c0 [ 37.046483] [] ? inet_sendmsg+0x73/0x4c0 [ 37.052189] [] ? inet_recvmsg+0x4c0/0x4c0 executing program executing program [ 37.057981] [] sock_sendmsg+0xca/0x110 [ 37.063535] [] ___sys_sendmsg+0x6c1/0x7c0 [ 37.069332] [] ? copy_msghdr_from_user+0x550/0x550 [ 37.075911] [] ? release_pages+0x1f7/0x4f0 [ 37.081826] [] ? __fget+0x20b/0x3b0 [ 37.087098] [] ? __fget+0x232/0x3b0 [ 37.092381] [] ? __fget+0x47/0x3b0 [ 37.097569] [] ? __fget_light+0xa1/0x1e0 [ 37.103284] [] ? __fdget+0x18/0x20 executing program executing program executing program executing program executing program [ 37.108477] [] ? sockfd_lookup_light+0x118/0x160 [ 37.114886] [] __sys_sendmsg+0xd3/0x190 [ 37.120512] [] ? SyS_shutdown+0x1b0/0x1b0 [ 37.126307] [] ? __do_page_fault+0x380/0xa00 [ 37.132360] [] compat_SyS_sendmsg+0x2a/0x40 [ 37.138335] [] ? compat_SyS_getsockopt+0x2a0/0x2a0 [ 37.144917] [] do_fast_syscall_32+0x314/0x890 [ 37.151066] [] 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 [ 38.842982] BUG: using __this_cpu_add() in preemptible [00000000] code: syzkaller716561/5396 [ 38.851634] caller is __this_cpu_preempt_check+0x1c/0x20 [ 38.857104] CPU: 1 PID: 5396 Comm: syzkaller716561 Not tainted 4.4.114-ga81d322 #4 [ 38.864798] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.874141] 0000000000000000 c4b9cbc66a1901d8 ffff8801d4897648 ffffffff81d0394d [ 38.882229] 0000000000000001 ffffffff839fe3a0 ffffffff83cef720 ffff8801d8054800 executing program executing program [ 38.890279] 0000000000000003 ffff8801d4897688 ffffffff81d63894 ffffffff810002b8 [ 38.898339] Call Trace: [ 38.900925] [] dump_stack+0xc1/0x124 [ 38.906291] [] check_preemption_disabled+0x1d4/0x200 [ 38.913125] [] ? 0xffffffff810002b8 [ 38.918401] [] __this_cpu_preempt_check+0x1c/0x20 [ 38.924890] [] tcp_try_coalesce+0x249/0x4d0 [ 38.930859] [] ? tcp_parse_options+0x970/0x970 executing program executing program executing program [ 38.937088] [] ? skb_copy_datagram_from_iter+0x38c/0x5a0 [ 38.944180] [] tcp_queue_rcv+0x127/0x720 [ 38.949885] [] tcp_send_rcvq+0x39b/0x450 [ 38.955588] [] ? tcp_rcv_established+0x2230/0x2230 [ 38.962605] [] ? do_softirq.part.17+0x40/0x60 [ 38.968751] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 38.975603] [] ? lock_sock_nested+0x90/0x120 [ 38.981745] [] ? trace_hardirqs_on+0xd/0x10 executing program executing program [ 38.987724] [] ? __local_bh_enable_ip+0x6a/0xd0 [ 38.994154] [] tcp_sendmsg+0x1e8f/0x2b10 [ 38.999956] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 39.006982] [] ? sock_has_perm+0x1c2/0x3e0 [ 39.012881] [] ? tcp_sendpage+0x1830/0x1830 [ 39.018853] [] ? inet_sendmsg+0x201/0x4c0 [ 39.024649] [] inet_sendmsg+0x2bc/0x4c0 [ 39.030276] [] ? inet_sendmsg+0x73/0x4c0 [ 39.035985] [] ? inet_recvmsg+0x4c0/0x4c0 executing program executing program [ 39.041798] [] sock_sendmsg+0xca/0x110 [ 39.047345] [] ___sys_sendmsg+0x6c1/0x7c0 [ 39.053149] [] ? copy_msghdr_from_user+0x550/0x550 [ 39.059741] [] ? finish_task_switch+0x1bb/0x4e0 [ 39.066060] [] ? __schedule+0xa26/0x1ca0 [ 39.071764] [] ? __fget+0x20b/0x3b0 [ 39.077036] [] ? __fget+0x232/0x3b0 [ 39.082311] [] ? __fget+0x47/0x3b0 [ 39.087492] [] ? __fget_light+0xa1/0x1e0 [ 39.093200] [] ? __fdget+0x18/0x20 [ 39.098384] [] ? sockfd_lookup_light+0x118/0x160 [ 39.104785] [] __sys_sendmsg+0xd3/0x190 [ 39.110405] [] ? SyS_shutdown+0x1b0/0x1b0 [ 39.116217] [] ? __do_page_fault+0x380/0xa00 [ 39.122270] [] compat_SyS_sendmsg+0x2a/0x40 [ 39.128239] [] ? compat_SyS_getsockopt+0x2a0/0x2a0 [ 39.134829] [] do_fast_syscall_32+0x314/0x890 executing program executing program executing program executing program executing program executing program [ 39.140977] [] 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 42.164466] BUG: using __this_cpu_add() in preemptible [00000000] code: syzkaller716561/6284 [ 42.173100] caller is __this_cpu_preempt_check+0x1c/0x20 [ 42.178586] CPU: 0 PID: 6284 Comm: syzkaller716561 Not tainted 4.4.114-ga81d322 #4 [ 42.186281] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.195926] 0000000000000000 2a23a6e4749f1da4 ffff8800b6847648 ffffffff81d0394d [ 42.203977] 0000000000000000 ffffffff839fe3a0 ffffffff83cef720 ffff8800b6bde000 executing program executing program executing program [ 42.212013] 0000000000000003 ffff8800b6847688 ffffffff81d63894 ffffffff810002b8 [ 42.220066] Call Trace: [ 42.222639] [] dump_stack+0xc1/0x124 [ 42.227996] [] check_preemption_disabled+0x1d4/0x200 [ 42.234738] [] ? 0xffffffff810002b8 [ 42.240012] [] __this_cpu_preempt_check+0x1c/0x20 [ 42.246519] [] tcp_try_coalesce+0x249/0x4d0 [ 42.252494] [] ? tcp_parse_options+0x970/0x970 executing program executing program executing program [ 42.258724] [] ? skb_copy_datagram_from_iter+0x38c/0x5a0 [ 42.265823] [] tcp_queue_rcv+0x127/0x720 [ 42.271652] [] tcp_send_rcvq+0x39b/0x450 [ 42.277360] [] ? tcp_rcv_established+0x2230/0x2230 [ 42.283945] [] ? do_softirq.part.17+0x40/0x60 [ 42.290173] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 42.297015] [] ? lock_sock_nested+0x90/0x120 [ 42.303185] [] ? trace_hardirqs_on+0xd/0x10 [ 42.309168] [] ? __local_bh_enable_ip+0x6a/0xd0 executing program [ 42.315496] [] tcp_sendmsg+0x1e8f/0x2b10 [ 42.321214] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 42.328232] [] ? sock_has_perm+0x1c2/0x3e0 [ 42.334125] [] ? tcp_sendpage+0x1830/0x1830 [ 42.340097] [] ? inet_sendmsg+0x201/0x4c0 [ 42.345910] [] inet_sendmsg+0x2bc/0x4c0 [ 42.351545] [] ? inet_sendmsg+0x73/0x4c0 [ 42.357278] [] ? inet_recvmsg+0x4c0/0x4c0 executing program executing program executing program [ 42.363096] [] sock_sendmsg+0xca/0x110 [ 42.368629] [] ___sys_sendmsg+0x6c1/0x7c0 [ 42.374421] [] ? copy_msghdr_from_user+0x550/0x550 [ 42.381008] [] ? __alloc_pages_direct_compact+0x250/0x250 [ 42.388206] [] ? __fget+0x20b/0x3b0 [ 42.393479] [] ? __fget+0x232/0x3b0 [ 42.398752] [] ? __fget+0x47/0x3b0 [ 42.403937] [] ? __fget_light+0xa1/0x1e0 [ 42.409647] [] ? __fdget+0x18/0x20 executing program executing program executing program executing program [ 42.414841] [] ? sockfd_lookup_light+0x118/0x160 [ 42.421271] [] __sys_sendmsg+0xd3/0x190 [ 42.426897] [] ? SyS_shutdown+0x1b0/0x1b0 [ 42.432692] [] ? __do_page_fault+0x380/0xa00 [ 42.438747] [] compat_SyS_sendmsg+0x2a/0x40 [ 42.444719] [] ? compat_SyS_getsockopt+0x2a0/0x2a0 [ 42.451307] [] do_fast_syscall_32+0x314/0x890 [ 42.457452] [] 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 [ 43.255765] BUG: using __this_cpu_add() in preemptible [00000000] code: syzkaller716561/6559 [ 43.264702] caller is __this_cpu_preempt_check+0x1c/0x20 [ 43.270145] CPU: 0 PID: 6559 Comm: syzkaller716561 Not tainted 4.4.114-ga81d322 #4 executing program executing program executing program executing program executing program [ 43.277847] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 executing program executing program executing program executing program executing program executing program [ 43.277857] 0000000000000000 91e585fbb36a92a8 ffff8801d714f648 ffffffff81d0394d executing program executing program executing program [ 43.277863] 0000000000000000 ffffffff839fe3a0 ffffffff83cef720 ffff8801d36b6000 [ 43.277868] 0000000000000003 ffff8801d714f688 ffffffff81d63894 ffffffff810002b8 executing program executing program executing program executing program executing program executing program [ 43.277870] Call Trace: [ 43.277884] [] dump_stack+0xc1/0x124 [ 43.277894] [] check_preemption_disabled+0x1d4/0x200 executing program executing program executing program [ 43.277898] [] ? 0xffffffff810002b8 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 43.277903] [] __this_cpu_preempt_check+0x1c/0x20 [ 43.277912] [] tcp_try_coalesce+0x249/0x4d0 executing program executing program executing program executing program executing program executing program [ 43.277919] [] ? tcp_parse_options+0x970/0x970 executing program executing program [ 43.277929] [] ? skb_copy_datagram_from_iter+0x38c/0x5a0 executing program executing program executing program executing program executing program [ 43.277937] [] tcp_queue_rcv+0x127/0x720 [ 43.277942] [] tcp_send_rcvq+0x39b/0x450 executing program executing program executing program [ 43.277947] [] ? tcp_rcv_established+0x2230/0x2230 [ 43.277955] [] ? do_softirq.part.17+0x40/0x60 executing program executing program executing program executing program executing program executing program executing program [ 43.277969] [] ? trace_hardirqs_on_caller+0x38b/0x590 [ 43.277978] [] ? lock_sock_nested+0x90/0x120 [ 43.277983] [] ? trace_hardirqs_on+0xd/0x10 executing program executing program executing program executing program [ 43.277989] [] ? __local_bh_enable_ip+0x6a/0xd0 [ 43.277996] [] tcp_sendmsg+0x1e8f/0x2b10 executing program executing program executing program executing program executing program executing program executing program [ 43.278002] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 43.278011] [] ? sock_has_perm+0x1c2/0x3e0