[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 16.832643] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 22.899249] random: sshd: uninitialized urandom read (32 bytes read) [ 23.387274] random: sshd: uninitialized urandom read (32 bytes read) [ 24.075494] random: sshd: uninitialized urandom read (32 bytes read) [ 24.226695] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.13' (ECDSA) to the list of known hosts. [ 29.698812] 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 [ 29.881348] kasan: CONFIG_KASAN_INLINE enabled [ 29.885970] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 29.893352] general protection fault: 0000 [#1] SMP KASAN [ 29.898882] CPU: 1 PID: 4459 Comm: syz-executor819 Not tainted 4.18.0-rc3+ #45 [ 29.906227] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.915593] RIP: 0010:do_raw_spin_lock+0x27/0x200 [ 29.920411] 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 [ 29.939571] RSP: 0018:ffff8801acfdf7c8 EFLAGS: 00010292 [ 29.944920] RAX: dffffc0000000000 RBX: 0000000000000230 RCX: 0000000000000000 [ 29.952172] RDX: 0000000000000046 RSI: 0000000000000000 RDI: 0000000000000234 [ 29.959421] RBP: ffff8801acfdf7f0 R08: 0000000000000001 R09: 0000000000000000 [ 29.966671] R10: ffffed003591c9fe R11: ffff8801ac8e4ff3 R12: dffffc0000000000 [ 29.973920] R13: ffff8801ad397840 R14: ffff8801ccea2a98 R15: ffff8801ccea2a80 [ 29.981180] FS: 00007fc40fd7f700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 29.989385] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 29.995245] CR2: 00007fff8e0abe70 CR3: 00000001acc48000 CR4: 00000000001406e0 [ 30.002495] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.009745] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.016993] Call Trace: [ 30.019574] _raw_spin_lock_bh+0x39/0x40 [ 30.023619] ? smap_list_hash_remove+0xa3/0x470 [ 30.028270] smap_list_hash_remove+0xa3/0x470 [ 30.032749] ? psock_map_pop.isra.26+0x3b0/0x3b0 [ 30.037486] ? do_raw_spin_unlock+0xa7/0x2f0 [ 30.041879] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 30.046444] ? sock_hash_ctx_update_elem.isra.27+0xe5e/0x1690 [ 30.052323] ? trace_hardirqs_on+0xd/0x10 [ 30.056460] ? __local_bh_enable_ip+0x161/0x230 [ 30.061117] sock_hash_ctx_update_elem.isra.27+0x1140/0x1690 [ 30.066907] ? sock_map_free+0x530/0x530 [ 30.070952] ? save_stack+0xa9/0xd0 [ 30.074560] ? __fget+0x414/0x670 [ 30.078001] ? expand_files.part.8+0x9c0/0x9c0 [ 30.082587] ? lock_acquire+0x1e4/0x540 [ 30.086540] ? fs_reclaim_acquire+0x20/0x20 [ 30.090854] ? lock_acquire+0x1e4/0x540 [ 30.094813] sock_hash_update_elem+0x157/0x2f0 [ 30.099377] ? bpf_sock_hash_update+0x90/0x90 [ 30.103852] ? lock_release+0xa30/0xa30 [ 30.107816] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 30.113336] ? bpf_sock_hash_update+0x90/0x90 [ 30.117823] map_update_elem+0x5c4/0xc90 [ 30.121867] __x64_sys_bpf+0x32d/0x510 [ 30.125736] ? bpf_prog_get+0x20/0x20 [ 30.129523] do_syscall_64+0x1b9/0x820 [ 30.133393] ? finish_task_switch+0x1d3/0x890 [ 30.137869] ? syscall_return_slowpath+0x5e0/0x5e0 [ 30.142787] ? syscall_return_slowpath+0x31d/0x5e0 [ 30.147715] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 30.152714] ? prepare_exit_to_usermode+0x291/0x3b0 [ 30.157714] ? perf_trace_sys_enter+0xb10/0xb10 [ 30.162367] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 30.167196] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 30.172367] RIP: 0033:0x4457c9 [ 30.175534] 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 [ 30.195217] RSP: 002b:00007fc40fd7eda8 EFLAGS: 00000297 ORIG_RAX: 0000000000000141 [ 30.202906] RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 00000000004457c9 [ 30.210157] RDX: 0000000000000020 RSI: 0000000020000180 RDI: 0000000000000002 [ 30.217407] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 30.224668] R10: 0000000000000000 R11: 0000000000000297 R12: 00000000006dac20 [ 30.231929] R13: 0030656c69662f2e R14: 00007fc40fd7f9c0 R15: 0000000000000007 [ 30.239182] Modules linked in: [ 30.242356] Dumping ftrace buffer: [ 30.245877] (ftrace buffer empty) [ 30.249603] ---[ end trace e8eda1f92794659d ]--- [ 30.255021] RIP: 0010:do_raw_spin_lock+0x27/0x200 [ 30.259860] 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 [ 30.279043] RSP: 0018:ffff8801acfdf7c8 EFLAGS: 00010292 [ 30.284401] RAX: dffffc0000000000 RBX: 0000000000000230 RCX: 0000000000000000 [ 30.291661] RDX: 0000000000000046 RSI: 0000000000000000 RDI: 0000000000000234 [ 30.298925] RBP: ffff8801acfdf7f0 R08: 0000000000000001 R09: 0000000000000000 [ 30.306188] R10: ffffed003591c9fe R11: ffff8801ac8e4ff3 R12: dffffc0000000000 [ 30.313449] R13: ffff8801ad397840 R14: ffff8801ccea2a98 R15: ffff8801ccea2a80 [ 30.320720] FS: 00007fc40fd7f700(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 30.328947] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.334817] CR2: 00007fff8e0abe70 CR3: 00000001acc48000 CR4: 00000000001406e0 [ 30.342079] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.349338] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.356598] Kernel panic - not syncing: Fatal exception in interrupt [ 30.363652] Dumping ftrace buffer: [ 30.367175] (ftrace buffer empty) [ 30.370860] Kernel Offset: disabled [ 30.374464] Rebooting in 86400 seconds..