[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 15.995963] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 20.334845] random: sshd: uninitialized urandom read (32 bytes read) [ 20.658227] random: sshd: uninitialized urandom read (32 bytes read) [ 21.407387] random: sshd: uninitialized urandom read (32 bytes read) [ 33.790368] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.24' (ECDSA) to the list of known hosts. [ 39.299966] 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 [ 39.469924] kasan: CONFIG_KASAN_INLINE enabled [ 39.474552] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 39.482025] general protection fault: 0000 [#1] SMP KASAN [ 39.487550] CPU: 0 PID: 4463 Comm: syz-executor947 Not tainted 4.18.0-rc3+ #57 [ 39.495004] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.504369] RIP: 0010:do_raw_spin_lock+0x27/0x200 [ 39.509300] 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 [ 39.528444] RSP: 0018:ffff8801ae43f7c8 EFLAGS: 00010292 [ 39.533807] RAX: dffffc0000000000 RBX: 0000000000000230 RCX: 0000000000000000 [ 39.541069] RDX: 0000000000000046 RSI: 0000000000000000 RDI: 0000000000000234 [ 39.548346] RBP: ffff8801ae43f7f0 R08: 0000000000000001 R09: 0000000000000000 [ 39.555605] R10: ffffed0035c1afae R11: ffff8801ae0d7d73 R12: dffffc0000000000 [ 39.562868] R13: ffff8801cfb0ca80 R14: ffff8801cdcfc398 R15: ffff8801cdcfc380 [ 39.570130] FS: 00007fa74729a700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 39.578356] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.584240] CR2: 00007fff8b460fa8 CR3: 00000001b1001000 CR4: 00000000001406f0 [ 39.591505] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 39.598751] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 39.606006] Call Trace: [ 39.608588] _raw_spin_lock_bh+0x39/0x40 [ 39.612631] ? smap_list_hash_remove+0xa3/0x470 [ 39.617294] smap_list_hash_remove+0xa3/0x470 [ 39.621790] ? psock_map_pop.isra.26+0x3b0/0x3b0 [ 39.626535] ? do_raw_spin_unlock+0xa7/0x2f0 [ 39.630931] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 39.635504] ? sock_hash_ctx_update_elem.isra.27+0xe5e/0x1690 [ 39.641376] ? trace_hardirqs_on+0xd/0x10 [ 39.645506] ? __local_bh_enable_ip+0x161/0x230 [ 39.650156] sock_hash_ctx_update_elem.isra.27+0x1140/0x1690 [ 39.655945] ? sock_map_free+0x530/0x530 [ 39.659999] ? save_stack+0xa9/0xd0 [ 39.663610] ? __fget+0x414/0x670 [ 39.667062] ? __rwlock_init+0x131/0x140 [ 39.671103] ? expand_files.part.8+0x9c0/0x9c0 [ 39.675800] ? do_raw_spin_unlock+0xa7/0x2f0 [ 39.680189] ? lock_acquire+0x1e4/0x540 [ 39.684151] ? fs_reclaim_acquire+0x20/0x20 [ 39.688457] ? lock_acquire+0x1e4/0x540 [ 39.692869] sock_hash_update_elem+0x157/0x2f0 [ 39.697450] ? bpf_sock_hash_update+0x90/0x90 [ 39.701929] ? lock_release+0xa30/0xa30 [ 39.705891] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 39.711409] ? bpf_sock_hash_update+0x90/0x90 [ 39.715890] map_update_elem+0x5c4/0xc90 [ 39.719935] __x64_sys_bpf+0x32d/0x510 [ 39.723811] ? bpf_prog_get+0x20/0x20 [ 39.727611] do_syscall_64+0x1b9/0x820 [ 39.731481] ? finish_task_switch+0x1d3/0x890 [ 39.735968] ? syscall_return_slowpath+0x5e0/0x5e0 [ 39.740887] ? syscall_return_slowpath+0x31d/0x5e0 [ 39.745807] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 39.750819] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 39.755660] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 39.760841] RIP: 0033:0x4456e9 [ 39.764020] 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 [ 39.783148] RSP: 002b:00007fa747299db8 EFLAGS: 00000297 ORIG_RAX: 0000000000000141 [ 39.790880] RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 00000000004456e9 [ 39.798147] RDX: 0000000000000020 RSI: 0000000020000180 RDI: 0000000000000002 [ 39.805409] RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000 [ 39.812692] R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000000000 [ 39.819979] R13: 00007ffea2b4eb2f R14: 00007fa74729a9c0 R15: 0000000000000007 [ 39.827273] Modules linked in: [ 39.830465] Dumping ftrace buffer: [ 39.834052] (ftrace buffer empty) [ 39.837802] ---[ end trace f73f494d58f239cf ]--- [ 39.842574] RIP: 0010:do_raw_spin_lock+0x27/0x200 [ 39.847409] 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 [ 39.866567] RSP: 0018:ffff8801ae43f7c8 EFLAGS: 00010292 [ 39.871934] RAX: dffffc0000000000 RBX: 0000000000000230 RCX: 0000000000000000 [ 39.879498] RDX: 0000000000000046 RSI: 0000000000000000 RDI: 0000000000000234 [ 39.886818] RBP: ffff8801ae43f7f0 R08: 0000000000000001 R09: 0000000000000000 [ 39.894125] R10: ffffed0035c1afae R11: ffff8801ae0d7d73 R12: dffffc0000000000 [ 39.901400] R13: ffff8801cfb0ca80 R14: ffff8801cdcfc398 R15: ffff8801cdcfc380 [ 39.908675] FS: 00007fa74729a700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 39.916926] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.922812] CR2: 00007fff8b460fa8 CR3: 00000001b1001000 CR4: 00000000001406f0 [ 39.930113] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 39.937426] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 39.944721] Kernel panic - not syncing: Fatal exception in interrupt [ 39.951644] Dumping ftrace buffer: [ 39.955170] (ftrace buffer empty) [ 39.958862] Kernel Offset: disabled [ 39.962471] Rebooting in 86400 seconds..