[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 15.797818] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. [ 16.429126] random: sshd: uninitialized urandom read (32 bytes read) [ 16.721180] random: sshd: uninitialized urandom read (32 bytes read) Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 17.402898] random: sshd: uninitialized urandom read (32 bytes read) [ 17.555225] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.28' (ECDSA) to the list of known hosts. [ 23.015762] 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 [ 23.213461] kasan: CONFIG_KASAN_INLINE enabled [ 23.218111] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 23.225495] general protection fault: 0000 [#1] SMP KASAN [ 23.231033] CPU: 0 PID: 4426 Comm: syz-executor181 Not tainted 4.18.0-rc3+ #48 [ 23.238378] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 23.248218] RIP: 0010:do_raw_spin_lock+0x27/0x200 [ 23.253037] 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 [ 23.272197] RSP: 0018:ffff8801ac9e77c8 EFLAGS: 00010292 [ 23.277545] RAX: dffffc0000000000 RBX: 0000000000000230 RCX: 0000000000000000 [ 23.284808] RDX: 0000000000000046 RSI: 0000000000000000 RDI: 0000000000000234 [ 23.292064] RBP: ffff8801ac9e77f0 R08: 0000000000000001 R09: 0000000000000000 [ 23.299335] R10: ffffed0035ac584e R11: ffff8801ad62c273 R12: dffffc0000000000 [ 23.306598] R13: ffff8801c46dd0c0 R14: ffff8801cd68ee98 R15: ffff8801cd68ee80 [ 23.313851] FS: 00007fad1c7ce700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 23.322057] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.327929] CR2: 00007ffe622aeddc CR3: 00000001c352c000 CR4: 00000000001406f0 [ 23.335199] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.342451] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.349700] Call Trace: [ 23.352279] _raw_spin_lock_bh+0x39/0x40 [ 23.356335] ? smap_list_hash_remove+0xa3/0x470 [ 23.360986] smap_list_hash_remove+0xa3/0x470 [ 23.365470] ? psock_map_pop.isra.26+0x3b0/0x3b0 [ 23.370207] ? do_raw_spin_unlock+0xa7/0x2f0 [ 23.374600] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 23.379176] ? sock_hash_ctx_update_elem.isra.27+0xe5e/0x1690 [ 23.385046] ? trace_hardirqs_on+0xd/0x10 [ 23.389179] ? __local_bh_enable_ip+0x161/0x230 [ 23.393834] sock_hash_ctx_update_elem.isra.27+0x1140/0x1690 [ 23.399617] ? sock_map_free+0x530/0x530 [ 23.403668] ? save_stack+0xa9/0xd0 [ 23.407283] ? __fget+0x414/0x670 [ 23.410719] ? expand_files.part.8+0x9c0/0x9c0 [ 23.415288] ? lock_acquire+0x1e4/0x540 [ 23.419245] ? fs_reclaim_acquire+0x20/0x20 [ 23.423552] ? lock_acquire+0x1e4/0x540 [ 23.427533] sock_hash_update_elem+0x157/0x2f0 [ 23.432101] ? bpf_sock_hash_update+0x90/0x90 [ 23.436578] ? lock_release+0xa30/0xa30 [ 23.440542] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 23.446063] ? bpf_sock_hash_update+0x90/0x90 [ 23.450539] map_update_elem+0x5c4/0xc90 [ 23.454583] __x64_sys_bpf+0x32d/0x510 [ 23.458465] ? bpf_prog_get+0x20/0x20 [ 23.462255] do_syscall_64+0x1b9/0x820 [ 23.466127] ? finish_task_switch+0x1d3/0x890 [ 23.470606] ? syscall_return_slowpath+0x5e0/0x5e0 [ 23.475521] ? syscall_return_slowpath+0x31d/0x5e0 [ 23.480435] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 23.485437] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 23.490276] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 23.495449] RIP: 0033:0x445689 [ 23.498618] 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 [ 23.517788] RSP: 002b:00007fad1c7cddb8 EFLAGS: 00000297 ORIG_RAX: 0000000000000141 [ 23.525501] RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 0000000000445689 [ 23.532752] RDX: 0000000000000020 RSI: 0000000020000180 RDI: 0000000000000002 [ 23.540089] RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000 [ 23.547343] R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000000000 [ 23.554603] R13: 00007ffc0c23bb7f R14: 00007fad1c7ce9c0 R15: 0000000000000005 [ 23.561871] Modules linked in: [ 23.565048] Dumping ftrace buffer: [ 23.568575] (ftrace buffer empty) [ 23.572316] ---[ end trace 54f4985495f0aa8d ]--- [ 23.577076] RIP: 0010:do_raw_spin_lock+0x27/0x200 [ 23.581925] 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 [ 23.601110] RSP: 0018:ffff8801ac9e77c8 EFLAGS: 00010292 [ 23.606469] RAX: dffffc0000000000 RBX: 0000000000000230 RCX: 0000000000000000 [ 23.613748] RDX: 0000000000000046 RSI: 0000000000000000 RDI: 0000000000000234 [ 23.621032] RBP: ffff8801ac9e77f0 R08: 0000000000000001 R09: 0000000000000000 [ 23.628308] R10: ffffed0035ac584e R11: ffff8801ad62c273 R12: dffffc0000000000 [ 23.635573] R13: ffff8801c46dd0c0 R14: ffff8801cd68ee98 R15: ffff8801cd68ee80 [ 23.642837] FS: 00007fad1c7ce700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 23.651057] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 23.656934] CR2: 00007ffe622aeddc CR3: 00000001c352c000 CR4: 00000000001406f0 [ 23.664210] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 23.671476] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 23.678742] Kernel panic - not syncing: Fatal exception in interrupt [ 23.685729] Dumping ftrace buffer: [ 23.689280] (ftrace buffer empty) [ 23.692969] Kernel Offset: disabled [ 23.696584] Rebooting in 86400 seconds..