[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 16.232288] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 19.658329] random: sshd: uninitialized urandom read (32 bytes read) [ 19.957106] random: sshd: uninitialized urandom read (32 bytes read) [ 20.640171] random: sshd: uninitialized urandom read (32 bytes read) [ 45.503575] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.33' (ECDSA) to the list of known hosts. [ 51.117878] 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 [ 51.264744] kasan: CONFIG_KASAN_INLINE enabled [ 51.269397] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 51.276851] general protection fault: 0000 [#1] SMP KASAN [ 51.282454] CPU: 0 PID: 4454 Comm: syz-executor594 Not tainted 4.18.0-rc3+ #45 [ 51.289900] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.299243] RIP: 0010:do_raw_spin_lock+0x27/0x200 [ 51.304147] 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 [ 51.323270] RSP: 0018:ffff8801ad3e77c8 EFLAGS: 00010292 [ 51.328626] RAX: dffffc0000000000 RBX: 0000000000000230 RCX: 0000000000000000 [ 51.335878] RDX: 0000000000000046 RSI: 0000000000000000 RDI: 0000000000000234 [ 51.343181] RBP: ffff8801ad3e77f0 R08: 0000000000000001 R09: 0000000000000000 [ 51.350454] R10: ffffed00359b8286 R11: ffff8801acdc1433 R12: dffffc0000000000 [ 51.357711] R13: ffff8801d8b35540 R14: ffff8801c65bb118 R15: ffff8801c65bb100 [ 51.364967] FS: 00007f51a93fb700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 51.373177] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 51.379049] CR2: 00007ffc4338af60 CR3: 00000001ad3f7000 CR4: 00000000001406f0 [ 51.386311] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 51.393566] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 51.400823] Call Trace: [ 51.403406] _raw_spin_lock_bh+0x39/0x40 [ 51.407465] ? smap_list_hash_remove+0xa3/0x470 [ 51.412148] smap_list_hash_remove+0xa3/0x470 [ 51.416652] ? psock_map_pop.isra.26+0x3b0/0x3b0 [ 51.421410] ? do_raw_spin_unlock+0xa7/0x2f0 [ 51.425799] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 51.430363] ? sock_hash_ctx_update_elem.isra.27+0xe5e/0x1690 [ 51.436229] ? trace_hardirqs_on+0xd/0x10 [ 51.440370] ? __local_bh_enable_ip+0x161/0x230 [ 51.445035] sock_hash_ctx_update_elem.isra.27+0x1140/0x1690 [ 51.450818] ? sock_map_free+0x530/0x530 [ 51.454871] ? save_stack+0xa9/0xd0 [ 51.458490] ? __fget+0x414/0x670 [ 51.461922] ? expand_files.part.8+0x9c0/0x9c0 [ 51.466485] ? lock_acquire+0x1e4/0x540 [ 51.470437] ? fs_reclaim_acquire+0x20/0x20 [ 51.474737] ? lock_acquire+0x1e4/0x540 [ 51.478694] sock_hash_update_elem+0x157/0x2f0 [ 51.483256] ? bpf_sock_hash_update+0x90/0x90 [ 51.487729] ? lock_release+0xa30/0xa30 [ 51.491684] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 51.497210] ? bpf_sock_hash_update+0x90/0x90 [ 51.501682] map_update_elem+0x5c4/0xc90 [ 51.505722] __x64_sys_bpf+0x32d/0x510 [ 51.509603] ? bpf_prog_get+0x20/0x20 [ 51.513383] ? kasan_check_read+0x11/0x20 [ 51.517511] ? compat_start_thread+0x80/0x80 [ 51.521899] do_syscall_64+0x1b9/0x820 [ 51.525773] ? syscall_return_slowpath+0x5e0/0x5e0 [ 51.530680] ? syscall_return_slowpath+0x31d/0x5e0 [ 51.535587] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 51.540582] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 51.545404] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 51.550571] RIP: 0033:0x445d19 [ 51.553738] 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 [ 51.572850] RSP: 002b:00007f51a93face8 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 [ 51.580545] RAX: ffffffffffffffda RBX: 00000000006dac3c RCX: 0000000000445d19 [ 51.587790] RDX: 0000000000000020 RSI: 0000000020000180 RDI: 0000000000000002 [ 51.595035] RBP: 00000000006dac38 R08: 0000000000000000 R09: 0000000000000000 [ 51.602281] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 [ 51.609529] R13: 00007ffd36a1e17f R14: 00007f51a93fb9c0 R15: 0000000000000005 [ 51.616775] Modules linked in: [ 51.619946] Dumping ftrace buffer: [ 51.623459] (ftrace buffer empty) [ 51.627198] ---[ end trace 996d9c1f5fab271a ]--- [ 51.631957] RIP: 0010:do_raw_spin_lock+0x27/0x200 [ 51.636789] 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 [ 51.655918] RSP: 0018:ffff8801ad3e77c8 EFLAGS: 00010292 [ 51.661274] RAX: dffffc0000000000 RBX: 0000000000000230 RCX: 0000000000000000 [ 51.668546] RDX: 0000000000000046 RSI: 0000000000000000 RDI: 0000000000000234 [ 51.675810] RBP: ffff8801ad3e77f0 R08: 0000000000000001 R09: 0000000000000000 [ 51.683074] R10: ffffed00359b8286 R11: ffff8801acdc1433 R12: dffffc0000000000 [ 51.690337] R13: ffff8801d8b35540 R14: ffff8801c65bb118 R15: ffff8801c65bb100 [ 51.697610] FS: 00007f51a93fb700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 51.705925] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 51.711814] CR2: 00007ffc4338af60 CR3: 00000001ad3f7000 CR4: 00000000001406f0 [ 51.719086] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 51.726356] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 51.733621] Kernel panic - not syncing: Fatal exception in interrupt [ 51.740528] Dumping ftrace buffer: [ 51.744044] (ftrace buffer empty) [ 51.747733] Kernel Offset: disabled [ 51.751340] Rebooting in 86400 seconds..