[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 16.016289] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 19.627967] random: sshd: uninitialized urandom read (32 bytes read) [ 19.993278] random: sshd: uninitialized urandom read (32 bytes read) [ 20.686806] random: sshd: uninitialized urandom read (32 bytes read) [ 43.269341] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.39' (ECDSA) to the list of known hosts. [ 48.700148] 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 [ 48.870182] kasan: CONFIG_KASAN_INLINE enabled [ 48.874865] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 48.882507] general protection fault: 0000 [#1] SMP KASAN [ 48.888053] CPU: 1 PID: 4456 Comm: syz-executor562 Not tainted 4.18.0-rc3-next-20180706+ #1 [ 48.896522] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.905868] RIP: 0010:do_raw_spin_lock+0x27/0x200 [ 48.910685] 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 [ 48.929805] RSP: 0018:ffff8801ac91f7c8 EFLAGS: 00010292 [ 48.935248] RAX: dffffc0000000000 RBX: 0000000000000230 RCX: 0000000000000000 [ 48.942498] RDX: 0000000000000046 RSI: 0000000000000000 RDI: 0000000000000234 [ 48.949748] RBP: ffff8801ac91f7f0 R08: 0000000000000001 R09: 0000000000000000 [ 48.956997] R10: ffffed003589056e R11: ffff8801ac482b73 R12: dffffc0000000000 [ 48.964246] R13: ffff8801b97510c0 R14: ffff8801c7dd8798 R15: ffff8801c7dd8780 [ 48.971499] FS: 00007fb05f101700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 48.979707] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 48.985582] CR2: 00007fffcdb53d70 CR3: 00000001bc514000 CR4: 00000000001406e0 [ 48.992838] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 49.000093] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 49.007344] Call Trace: [ 49.009923] _raw_spin_lock_bh+0x39/0x40 [ 49.013971] ? smap_list_hash_remove+0xa3/0x470 [ 49.018624] smap_list_hash_remove+0xa3/0x470 [ 49.023106] ? psock_map_pop.isra.26+0x3b0/0x3b0 [ 49.027847] ? do_raw_spin_unlock+0xa7/0x2f0 [ 49.032237] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 49.036806] ? sock_hash_ctx_update_elem.isra.27+0xe5e/0x1690 [ 49.042675] ? trace_hardirqs_on+0xd/0x10 [ 49.046827] ? __local_bh_enable_ip+0x161/0x230 [ 49.051479] sock_hash_ctx_update_elem.isra.27+0x1140/0x1690 [ 49.057263] ? sock_map_free+0x530/0x530 [ 49.061309] ? __fget+0x4d5/0x740 [ 49.064748] ? ksys_dup3+0x690/0x690 [ 49.068446] ? lock_acquire+0x1e4/0x540 [ 49.072410] ? __fd_install+0x2b2/0x880 [ 49.076633] ? lock_acquire+0x1e4/0x540 [ 49.081740] ? fs_reclaim_acquire+0x20/0x20 [ 49.086048] ? lock_acquire+0x1e4/0x540 [ 49.090008] sock_hash_update_elem+0x157/0x2f0 [ 49.094578] ? bpf_sock_hash_update+0x90/0x90 [ 49.099067] ? lock_release+0xa30/0xa30 [ 49.103026] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 49.108557] ? bpf_sock_hash_update+0x90/0x90 [ 49.113034] map_update_elem+0x5c4/0xc90 [ 49.117078] __x64_sys_bpf+0x32d/0x510 [ 49.120945] ? bpf_prog_get+0x20/0x20 [ 49.124745] do_syscall_64+0x1b9/0x820 [ 49.128628] ? finish_task_switch+0x1d3/0x870 [ 49.133103] ? syscall_return_slowpath+0x5e0/0x5e0 [ 49.138013] ? syscall_return_slowpath+0x31d/0x5e0 [ 49.143026] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 49.148026] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 49.152860] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 49.158027] RIP: 0033:0x445689 [ 49.161195] Code: e8 3c b6 02 00 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 2b 12 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 49.180483] RSP: 002b:00007fb05f100db8 EFLAGS: 00000297 ORIG_RAX: 0000000000000141 [ 49.188180] RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 0000000000445689 [ 49.195528] RDX: 0000000000000020 RSI: 0000000020000180 RDI: 0000000000000002 [ 49.202990] RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000 [ 49.210250] R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000000000 [ 49.217509] R13: 00007ffdd065b6cf R14: 00007fb05f1019c0 R15: 0000000000000005 [ 49.224764] Modules linked in: [ 49.227941] Dumping ftrace buffer: [ 49.231457] (ftrace buffer empty) [ 49.235187] ---[ end trace c1f7b083689839c7 ]--- [ 49.239949] RIP: 0010:do_raw_spin_lock+0x27/0x200 [ 49.244794] 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 [ 49.263942] RSP: 0018:ffff8801ac91f7c8 EFLAGS: 00010292 [ 49.269307] RAX: dffffc0000000000 RBX: 0000000000000230 RCX: 0000000000000000 [ 49.276580] RDX: 0000000000000046 RSI: 0000000000000000 RDI: 0000000000000234 [ 49.283846] RBP: ffff8801ac91f7f0 R08: 0000000000000001 R09: 0000000000000000 [ 49.291147] R10: ffffed003589056e R11: ffff8801ac482b73 R12: dffffc0000000000 [ 49.298418] R13: ffff8801b97510c0 R14: ffff8801c7dd8798 R15: ffff8801c7dd8780 [ 49.305704] FS: 00007fb05f101700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 49.313929] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 49.319938] CR2: 00007fffcdb53d70 CR3: 00000001bc514000 CR4: 00000000001406e0 [ 49.327224] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 49.334494] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 49.343710] Kernel panic - not syncing: Fatal exception in interrupt [ 49.350649] Dumping ftrace buffer: [ 49.354172] (ftrace buffer empty) [ 49.357867] Kernel Offset: disabled [ 49.361477] Rebooting in 86400 seconds..