[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 10.665684] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 23.469228] random: crng init done Warning: Permanently added '10.128.0.86' (ECDSA) to the list of known hosts. executing program executing program executing program [ 39.569280] kasan: CONFIG_KASAN_INLINE enabled [ 39.573914] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 39.581287] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 39.587528] Modules linked in: [ 39.590826] CPU: 1 PID: 2057 Comm: syz-executor139 Not tainted 4.9.141+ #23 [ 39.598036] task: ffff8801d1632f80 task.stack: ffff8801cfbc8000 [ 39.604125] RIP: 0010:[] [] tcp_sendpage+0x35d/0x1910 [ 39.612637] RSP: 0018:ffff8801cfbcf920 EFLAGS: 00010206 [ 39.618199] RAX: 000000000000000f RBX: 0000000000000000 RCX: 1ffff10039f5304b [ 39.625446] RDX: 0000000000000000 RSI: ffffffff824e0eab RDI: 0000000000000078 [ 39.632694] RBP: ffff8801cfbcfa88 R08: ffff8801d1633830 R09: 0000000000000000 [ 39.639938] R10: 0000000000000000 R11: 0000000000000000 R12: 000000000000fd58 [ 39.647182] R13: ffff8801c4c42ec0 R14: ffff8801cfa98000 R15: dffffc0000000000 [ 39.654426] FS: 0000000000000000(0000) GS:ffff8801db700000(0063) knlGS:00000000f76efb40 [ 39.662637] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 39.668498] CR2: 0000000020010000 CR3: 00000001d29de000 CR4: 00000000001606b0 [ 39.675776] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 39.683024] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 39.690280] Stack: [ 39.692445] ffff8801cfbcf930 ffffffff81243c87 0000000000000246 ffff8801d1632f80 [ 39.700524] ffffffff830cc2e0 fffffbfff067d37c 0000000000000000 ffff8801d1633830 [ 39.708521] ffffed003a2c6705 0000000000000000 ffff8801cfa983e8 ffff8801cfbcf9e0 [ 39.716522] Call Trace: [ 39.719089] [] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 39.725831] [] ? sk_stream_alloc_skb+0x5d0/0x5d0 [ 39.732295] [] ? check_preemption_disabled+0x3b/0x200 [ 39.739114] [] ? inet_sendpage+0x14b/0x510 [ 39.744982] [] ? sk_stream_alloc_skb+0x5d0/0x5d0 [ 39.751360] [] inet_sendpage+0x221/0x510 [ 39.757042] [] ? inet_sendpage+0x7b/0x510 [ 39.762948] [] kernel_sendpage+0x93/0xf0 [ 39.768635] [] ? inet_getname+0x3b0/0x3b0 [ 39.774405] [] sock_sendpage+0x8c/0xc0 [ 39.780129] [] ? kernel_sendpage+0xf0/0xf0 [ 39.786125] [] pipe_to_sendpage+0x266/0x330 [ 39.792077] [] ? generic_pipe_buf_nosteal+0x10/0x10 [ 39.798728] [] ? splice_from_pipe_next.part.2+0x226/0x2e0 [ 39.805944] [] __splice_from_pipe+0x316/0x710 [ 39.812068] [] ? generic_pipe_buf_nosteal+0x10/0x10 [ 39.818713] [] splice_from_pipe+0xf9/0x170 [ 39.824574] [] ? generic_pipe_buf_nosteal+0x10/0x10 [ 39.831231] [] ? splice_shrink_spd+0xb0/0xb0 [ 39.837277] [] ? security_file_permission+0x8f/0x1e0 [ 39.844136] [] generic_splice_sendpage+0x3c/0x50 [ 39.850521] [] ? splice_from_pipe+0x170/0x170 [ 39.856645] [] SyS_splice+0xe4d/0x14d0 [ 39.862273] [] ? check_preemption_disabled+0x3b/0x200 [ 39.869089] [] ? compat_SyS_vmsplice+0x160/0x160 [ 39.875483] [] ? do_fast_syscall_32+0xcf/0xa10 [ 39.881691] [] ? compat_SyS_vmsplice+0x160/0x160 [ 39.888090] [] do_fast_syscall_32+0x2f1/0xa10 [ 39.894250] [] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 39.900915] [] entry_SYSENTER_compat+0x90/0xa2 [ 39.907120] Code: ff ff 48 0f 44 d8 e8 c3 ab e3 fe 4d 85 e4 0f 84 f0 04 00 00 e8 b5 ab e3 fe 48 8d 7b 78 44 8b a5 58 ff ff ff 48 89 f8 48 c1 e8 03 <42> 0f b6 04 38 84 c0 74 08 3c 03 0f 8e 06 11 00 00 44 2b 63 78 [ 39.934178] RIP [] tcp_sendpage+0x35d/0x1910 [ 39.940329] RSP [ 39.944192] ---[ end trace 9965a59fc85c8748 ]--- [ 39.948975] Kernel panic - not syncing: Fatal exception [ 39.954715] Kernel Offset: disabled [ 39.958327] Rebooting in 86400 seconds..