[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 17.818700] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 23.679455] random: sshd: uninitialized urandom read (32 bytes read) [ 24.372321] random: sshd: uninitialized urandom read (32 bytes read) [ 25.068916] random: sshd: uninitialized urandom read (32 bytes read) [ 25.209741] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.0' (ECDSA) to the list of known hosts. [ 30.735032] random: sshd: uninitialized urandom read (32 bytes read) executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 33.868914] kasan: CONFIG_KASAN_INLINE enabled [ 33.873664] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 33.881071] general protection fault: 0000 [#1] SMP KASAN [ 33.886692] CPU: 1 PID: 4480 Comm: syz-executor799 Not tainted 4.18.0-rc3+ #45 [ 33.894052] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 33.903426] RIP: 0010:do_raw_spin_lock+0x27/0x200 executing program [ 33.908261] Code: 00 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 41 56 41 55 41 54 53 48 89 fb 48 83 c7 04 48 89 fa 48 c1 ea 03 48 83 ec 08 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 7b [ 33.927583] RSP: 0018:ffff8801bd3bf7c8 EFLAGS: 00010292 [ 33.932956] RAX: dffffc0000000000 RBX: 0000000000000230 RCX: 0000000000000000 [ 33.940237] RDX: 0000000000000046 RSI: 0000000000000000 RDI: 0000000000000234 [ 33.947616] RBP: ffff8801bd3bf7f0 R08: 0000000000000001 R09: 0000000000000000 [ 33.954989] R10: ffffed003a560cde R11: ffff8801d2b066f3 R12: dffffc0000000000 [ 33.962266] R13: ffff8801d9ba9800 R14: ffff8801abc22218 R15: ffff8801abc22200 executing program [ 33.969546] FS: 00007f79edb53700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 33.977777] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.983666] CR2: 00007f8d55c2ce99 CR3: 00000001cfc53000 CR4: 00000000001406e0 [ 33.992576] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.999856] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.007125] Call Trace: [ 34.009757] _raw_spin_lock_bh+0x39/0x40 [ 34.013851] ? smap_list_hash_remove+0xa3/0x470 executing program executing program executing program [ 34.018622] smap_list_hash_remove+0xa3/0x470 [ 34.023137] ? psock_map_pop.isra.26+0x3b0/0x3b0 [ 34.027919] ? do_raw_spin_unlock+0xa7/0x2f0 [ 34.032374] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 34.036975] ? sock_hash_ctx_update_elem.isra.27+0xe5e/0x1690 [ 34.042871] ? trace_hardirqs_on+0xd/0x10 [ 34.047034] ? __local_bh_enable_ip+0x161/0x230 [ 34.051731] sock_hash_ctx_update_elem.isra.27+0x1140/0x1690 [ 34.057633] ? sock_map_free+0x530/0x530 [ 34.062329] ? save_stack+0xa9/0xd0 [ 34.065975] ? __fget+0x414/0x670 [ 34.069440] ? expand_files.part.8+0x9c0/0x9c0 [ 34.074122] ? lock_acquire+0x1e4/0x540 [ 34.078105] ? fs_reclaim_acquire+0x20/0x20 [ 34.082437] ? lock_acquire+0x1e4/0x540 [ 34.086399] sock_hash_update_elem+0x157/0x2f0 [ 34.090971] ? bpf_sock_hash_update+0x90/0x90 [ 34.095467] ? lock_release+0xa30/0xa30 [ 34.099436] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 34.104962] ? bpf_sock_hash_update+0x90/0x90 [ 34.109448] map_update_elem+0x5c4/0xc90 [ 34.113511] __x64_sys_bpf+0x32d/0x510 [ 34.117384] ? bpf_prog_get+0x20/0x20 [ 34.121184] do_syscall_64+0x1b9/0x820 [ 34.125056] ? finish_task_switch+0x1d3/0x890 [ 34.129716] ? syscall_return_slowpath+0x5e0/0x5e0 [ 34.134634] ? syscall_return_slowpath+0x31d/0x5e0 [ 34.140418] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 34.145422] ? prepare_exit_to_usermode+0x291/0x3b0 [ 34.150426] ? perf_trace_sys_enter+0xb10/0xb10 [ 34.155085] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 34.159921] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 34.165106] RIP: 0033:0x445de9 [ 34.168279] Code: e8 cc e6 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 3b 0d fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 34.187465] RSP: 002b:00007f79edb52db8 EFLAGS: 00000297 ORIG_RAX: 0000000000000141 [ 34.195256] RAX: ffffffffffffffda RBX: 00000000006dbc24 RCX: 0000000000445de9 [ 34.202693] RDX: 0000000000000020 RSI: 0000000020000180 RDI: 0000000000000002 [ 34.209958] RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 [ 34.217299] R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000000000 [ 34.224557] R13: 00007ffd2b8c751f R14: 00007f79edb539c0 R15: 0000000000000007 [ 34.231832] Modules linked in: [ 34.235015] Dumping ftrace buffer: [ 34.238546] (ftrace buffer empty) [ 34.242911] ---[ end trace 01af009404182813 ]--- [ 34.247671] RIP: 0010:do_raw_spin_lock+0x27/0x200 [ 34.252502] Code: 00 00 00 48 b8 00 00 00 00 00 fc ff df 55 48 89 e5 41 56 41 55 41 54 53 48 89 fb 48 83 c7 04 48 89 fa 48 c1 ea 03 48 83 ec 08 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 7b [ 34.271690] RSP: 0018:ffff8801bd3bf7c8 EFLAGS: 00010292 [ 34.277061] RAX: dffffc0000000000 RBX: 0000000000000230 RCX: 0000000000000000 [ 34.284337] RDX: 0000000000000046 RSI: 0000000000000000 RDI: 0000000000000234 [ 34.291603] RBP: ffff8801bd3bf7f0 R08: 0000000000000001 R09: 0000000000000000 [ 34.298869] R10: ffffed003a560cde R11: ffff8801d2b066f3 R12: dffffc0000000000 [ 34.306141] R13: ffff8801d9ba9800 R14: ffff8801abc22218 R15: ffff8801abc22200 [ 34.313410] FS: 00007f79edb53700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 34.321634] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 34.327508] CR2: 00007f8d55c2ce99 CR3: 00000001cfc53000 CR4: 00000000001406e0 [ 34.334790] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 34.342142] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 34.349427] Kernel panic - not syncing: Fatal exception in interrupt [ 34.356633] Dumping ftrace buffer: [ 34.360249] (ftrace buffer empty) [ 34.363957] Kernel Offset: disabled [ 34.367583] Rebooting in 86400 seconds..