[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 13.420477] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. [ 14.448391] random: sshd: uninitialized urandom read (32 bytes read) Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 14.673832] random: sshd: uninitialized urandom read (32 bytes read) [ 15.309583] random: sshd: uninitialized urandom read (32 bytes read) [ 15.450827] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.43' (ECDSA) to the list of known hosts. [ 20.894045] 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 [ 21.093345] kasan: CONFIG_KASAN_INLINE enabled [ 21.097996] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 21.105383] general protection fault: 0000 [#1] SMP KASAN [ 21.110913] CPU: 0 PID: 4402 Comm: syz-executor461 Not tainted 4.18.0-rc3+ #45 [ 21.118259] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 21.127603] RIP: 0010:do_raw_spin_lock+0x27/0x200 [ 21.132421] 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 [ 21.151609] RSP: 0018:ffff8801b774f7c8 EFLAGS: 00010292 [ 21.156965] RAX: dffffc0000000000 RBX: 0000000000000230 RCX: 0000000000000000 [ 21.164223] RDX: 0000000000000046 RSI: 0000000000000000 RDI: 0000000000000234 [ 21.171479] RBP: ffff8801b774f7f0 R08: 0000000000000001 R09: 0000000000000000 [ 21.178728] R10: ffffed0036dc104e R11: ffff8801b6e08273 R12: dffffc0000000000 [ 21.185976] R13: ffff8801b773fcc0 R14: ffff8801cd18ee98 R15: ffff8801cd18ee80 [ 21.193229] FS: 00007fd91d8ee700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 21.201433] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.207294] CR2: 00007ffdc3fb0fb0 CR3: 00000001b782a000 CR4: 00000000001406f0 [ 21.214546] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.221794] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.229039] Call Trace: [ 21.231615] _raw_spin_lock_bh+0x39/0x40 [ 21.235667] ? smap_list_hash_remove+0xa3/0x470 [ 21.240317] smap_list_hash_remove+0xa3/0x470 [ 21.244795] ? psock_map_pop.isra.26+0x3b0/0x3b0 [ 21.249530] ? do_raw_spin_unlock+0xa7/0x2f0 [ 21.253917] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 21.258481] ? sock_hash_ctx_update_elem.isra.27+0xe5e/0x1690 [ 21.264349] ? trace_hardirqs_on+0xd/0x10 [ 21.268477] ? __local_bh_enable_ip+0x161/0x230 [ 21.273129] sock_hash_ctx_update_elem.isra.27+0x1140/0x1690 [ 21.278921] ? sock_map_free+0x530/0x530 [ 21.282966] ? zap_class+0x740/0x740 [ 21.286663] ? save_stack+0xa9/0xd0 [ 21.290274] ? __fget+0x414/0x670 [ 21.293711] ? expand_files.part.8+0x9c0/0x9c0 [ 21.298280] ? lock_acquire+0x1e4/0x540 [ 21.302238] sock_hash_update_elem+0x157/0x2f0 [ 21.306806] ? bpf_sock_hash_update+0x90/0x90 [ 21.311283] ? lock_release+0xa30/0xa30 [ 21.315243] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 21.320765] ? bpf_sock_hash_update+0x90/0x90 [ 21.325252] map_update_elem+0x5c4/0xc90 [ 21.329295] __x64_sys_bpf+0x32d/0x510 [ 21.333163] ? bpf_prog_get+0x20/0x20 [ 21.336947] ? trace_hardirqs_on+0xd/0x10 [ 21.341089] do_syscall_64+0x1b9/0x820 [ 21.344959] ? syscall_return_slowpath+0x5e0/0x5e0 [ 21.349873] ? syscall_return_slowpath+0x31d/0x5e0 [ 21.354782] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 21.359782] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 21.364609] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 21.369785] RIP: 0033:0x445c09 [ 21.372950] Code: e8 bc e7 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 2b 0e fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 21.392142] RSP: 002b:00007fd91d8eddb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 21.399829] RAX: ffffffffffffffda RBX: 00000000006dac3c RCX: 0000000000445c09 [ 21.407078] RDX: 0000000000000020 RSI: 0000000020000180 RDI: 0000000000000002 [ 21.414327] RBP: 00000000006dac38 R08: 0000000000000000 R09: 0000000000000000 [ 21.421576] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 21.428824] R13: 00007ffe5be539ef R14: 00007fd91d8ee9c0 R15: 0000000000000007 [ 21.436079] Modules linked in: [ 21.439253] Dumping ftrace buffer: [ 21.442769] (ftrace buffer empty) [ 21.446513] ---[ end trace d722bfa19c1dff00 ]--- [ 21.451265] RIP: 0010:do_raw_spin_lock+0x27/0x200 [ 21.456100] 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 [ 21.475293] RSP: 0018:ffff8801b774f7c8 EFLAGS: 00010292 [ 21.480645] RAX: dffffc0000000000 RBX: 0000000000000230 RCX: 0000000000000000 [ 21.487905] RDX: 0000000000000046 RSI: 0000000000000000 RDI: 0000000000000234 [ 21.495172] RBP: ffff8801b774f7f0 R08: 0000000000000001 R09: 0000000000000000 [ 21.502430] R10: ffffed0036dc104e R11: ffff8801b6e08273 R12: dffffc0000000000 [ 21.509689] R13: ffff8801b773fcc0 R14: ffff8801cd18ee98 R15: ffff8801cd18ee80 [ 21.516950] FS: 00007fd91d8ee700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 21.525164] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 21.531039] CR2: 00007ffdc3fb0fb0 CR3: 00000001b782a000 CR4: 00000000001406f0 [ 21.538300] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 21.545560] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 21.552820] Kernel panic - not syncing: Fatal exception in interrupt [ 21.559768] Dumping ftrace buffer: [ 21.563289] (ftrace buffer empty) [ 21.566975] Kernel Offset: disabled [ 21.570579] Rebooting in 86400 seconds..