[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 15.645998] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 20.139423] random: sshd: uninitialized urandom read (32 bytes read) [ 20.492637] random: sshd: uninitialized urandom read (32 bytes read) [ 21.199585] random: sshd: uninitialized urandom read (32 bytes read) [ 73.701472] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.26' (ECDSA) to the list of known hosts. [ 79.238430] 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 [ 79.390070] kasan: CONFIG_KASAN_INLINE enabled [ 79.394681] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 79.402041] general protection fault: 0000 [#1] SMP KASAN [ 79.407563] CPU: 0 PID: 4458 Comm: syz-executor353 Not tainted 4.18.0-rc3+ #55 [ 79.414908] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 79.424251] RIP: 0010:do_raw_spin_lock+0x27/0x200 [ 79.429066] 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 [ 79.448181] RSP: 0018:ffff8801ad39f7c8 EFLAGS: 00010292 [ 79.453521] RAX: dffffc0000000000 RBX: 0000000000000230 RCX: 0000000000000000 [ 79.460767] RDX: 0000000000000046 RSI: 0000000000000000 RDI: 0000000000000234 [ 79.468015] RBP: ffff8801ad39f7f0 R08: 0000000000000001 R09: 0000000000000000 [ 79.475262] R10: ffffed0037c3504e R11: ffff8801be1a8273 R12: dffffc0000000000 [ 79.482517] R13: ffff8801bd0f1580 R14: ffff8801cd47fc18 R15: ffff8801cd47fc00 [ 79.489771] FS: 00007f96f08f2700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 79.497971] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 79.503829] CR2: 00007ffcade10b70 CR3: 00000001bd298000 CR4: 00000000001406f0 [ 79.511088] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 79.518332] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 79.525574] Call Trace: [ 79.528143] _raw_spin_lock_bh+0x39/0x40 [ 79.532189] ? smap_list_hash_remove+0xa3/0x470 [ 79.536833] smap_list_hash_remove+0xa3/0x470 [ 79.541304] ? psock_map_pop.isra.26+0x3b0/0x3b0 [ 79.546042] ? do_raw_spin_unlock+0xa7/0x2f0 [ 79.550425] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 79.554984] ? sock_hash_ctx_update_elem.isra.27+0xe5e/0x1690 [ 79.560847] ? trace_hardirqs_on+0xd/0x10 [ 79.574523] ? __local_bh_enable_ip+0x161/0x230 [ 79.579171] sock_hash_ctx_update_elem.isra.27+0x1140/0x1690 [ 79.584953] ? sock_map_free+0x530/0x530 [ 79.588993] ? save_stack+0xa9/0xd0 [ 79.592597] ? __fget+0x414/0x670 [ 79.596043] ? expand_files.part.8+0x9c0/0x9c0 [ 79.600606] ? lock_acquire+0x1e4/0x540 [ 79.604558] ? fs_reclaim_acquire+0x20/0x20 [ 79.608856] ? lock_acquire+0x1e4/0x540 [ 79.612812] sock_hash_update_elem+0x157/0x2f0 [ 79.617371] ? bpf_sock_hash_update+0x90/0x90 [ 79.621841] ? lock_release+0xa30/0xa30 [ 79.625802] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 79.631316] ? bpf_sock_hash_update+0x90/0x90 [ 79.635789] map_update_elem+0x5c4/0xc90 [ 79.639827] __x64_sys_bpf+0x32d/0x510 [ 79.643692] ? bpf_prog_get+0x20/0x20 [ 79.647486] do_syscall_64+0x1b9/0x820 [ 79.651350] ? finish_task_switch+0x1d3/0x890 [ 79.655823] ? syscall_return_slowpath+0x5e0/0x5e0 [ 79.660728] ? syscall_return_slowpath+0x31d/0x5e0 [ 79.665634] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 79.670627] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 79.675449] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 79.680617] RIP: 0033:0x445d19 [ 79.683792] Code: e8 2c b7 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 [ 79.702909] RSP: 002b:00007f96f08f1ce8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 79.710596] RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 0000000000445d19 [ 79.717856] RDX: 0000000000000020 RSI: 0000000020000180 RDI: 0000000000000002 [ 79.725101] RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000 [ 79.732347] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 79.739593] R13: 00007fffc29247af R14: 00007f96f08f29c0 R15: 0000000000000005 [ 79.746843] Modules linked in: [ 79.750024] Dumping ftrace buffer: [ 79.753536] (ftrace buffer empty) [ 79.757262] ---[ end trace fd954b2d3676b220 ]--- [ 79.762030] RIP: 0010:do_raw_spin_lock+0x27/0x200 [ 79.766861] 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 [ 79.786022] RSP: 0018:ffff8801ad39f7c8 EFLAGS: 00010292 [ 79.791376] RAX: dffffc0000000000 RBX: 0000000000000230 RCX: 0000000000000000 [ 79.798643] RDX: 0000000000000046 RSI: 0000000000000000 RDI: 0000000000000234 [ 79.805908] RBP: ffff8801ad39f7f0 R08: 0000000000000001 R09: 0000000000000000 [ 79.813175] R10: ffffed0037c3504e R11: ffff8801be1a8273 R12: dffffc0000000000 [ 79.820438] R13: ffff8801bd0f1580 R14: ffff8801cd47fc18 R15: ffff8801cd47fc00 [ 79.827705] FS: 00007f96f08f2700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 79.835948] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 79.841828] CR2: 00007ffcade10b70 CR3: 00000001bd298000 CR4: 00000000001406f0 [ 79.849095] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 79.856362] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 79.863623] Kernel panic - not syncing: Fatal exception in interrupt [ 79.870494] Dumping ftrace buffer: [ 79.874009] (ftrace buffer empty) [ 79.877695] Kernel Offset: disabled [ 79.881298] Rebooting in 86400 seconds..