[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 15.927938] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 19.338821] random: sshd: uninitialized urandom read (32 bytes read) [ 19.622721] random: sshd: uninitialized urandom read (32 bytes read) [ 20.302538] random: sshd: uninitialized urandom read (32 bytes read) [ 20.828479] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.50' (ECDSA) to the list of known hosts. [ 26.279101] 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 [ 26.454314] kasan: CONFIG_KASAN_INLINE enabled [ 26.458944] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 26.466321] general protection fault: 0000 [#1] SMP KASAN [ 26.471843] CPU: 0 PID: 4449 Comm: syz-executor157 Not tainted 4.18.0-rc3+ #48 [ 26.479179] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 26.488531] RIP: 0010:do_raw_spin_lock+0x27/0x200 [ 26.493350] 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 [ 26.512466] RSP: 0018:ffff8801add177c8 EFLAGS: 00010292 [ 26.517816] RAX: dffffc0000000000 RBX: 0000000000000230 RCX: 0000000000000000 [ 26.525067] RDX: 0000000000000046 RSI: 0000000000000000 RDI: 0000000000000234 [ 26.532319] RBP: ffff8801add177f0 R08: 0000000000000001 R09: 0000000000000000 [ 26.539567] R10: ffffed0035a585fe R11: ffff8801ad2c2ff3 R12: dffffc0000000000 [ 26.546827] R13: ffff8801b8506540 R14: ffff8801cb8bd498 R15: ffff8801cb8bd480 [ 26.554087] FS: 00007f0fc7b71700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 26.562290] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.568158] CR2: 00007ffc3b062e70 CR3: 00000001afa1b000 CR4: 00000000001406f0 [ 26.575406] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.582653] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.589901] Call Trace: [ 26.592499] _raw_spin_lock_bh+0x39/0x40 [ 26.596548] ? smap_list_hash_remove+0xa3/0x470 [ 26.601200] smap_list_hash_remove+0xa3/0x470 [ 26.605678] ? psock_map_pop.isra.26+0x3b0/0x3b0 [ 26.610416] ? do_raw_spin_unlock+0xa7/0x2f0 [ 26.614807] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 26.619371] ? sock_hash_ctx_update_elem.isra.27+0xe5e/0x1690 [ 26.625241] ? trace_hardirqs_on+0xd/0x10 [ 26.629373] ? __local_bh_enable_ip+0x161/0x230 [ 26.634027] sock_hash_ctx_update_elem.isra.27+0x1140/0x1690 [ 26.639810] ? sock_map_free+0x530/0x530 [ 26.643857] ? save_stack+0xa9/0xd0 [ 26.647479] ? __fget+0x414/0x670 [ 26.650915] ? expand_files.part.8+0x9c0/0x9c0 [ 26.655491] ? lock_acquire+0x1e4/0x540 [ 26.659485] ? fs_reclaim_acquire+0x20/0x20 [ 26.663831] ? lock_acquire+0x1e4/0x540 [ 26.667824] sock_hash_update_elem+0x157/0x2f0 [ 26.672453] ? bpf_sock_hash_update+0x90/0x90 [ 26.676943] ? lock_release+0xa30/0xa30 [ 26.680911] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 26.686449] ? bpf_sock_hash_update+0x90/0x90 [ 26.690930] map_update_elem+0x5c4/0xc90 [ 26.694975] __x64_sys_bpf+0x32d/0x510 [ 26.698842] ? bpf_prog_get+0x20/0x20 [ 26.702628] do_syscall_64+0x1b9/0x820 [ 26.706498] ? finish_task_switch+0x1d3/0x890 [ 26.710987] ? syscall_return_slowpath+0x5e0/0x5e0 [ 26.715908] ? syscall_return_slowpath+0x31d/0x5e0 [ 26.720820] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 26.725817] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 26.730649] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 26.735833] RIP: 0033:0x445689 [ 26.739000] 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 [ 26.758133] RSP: 002b:00007f0fc7b70db8 EFLAGS: 00000297 ORIG_RAX: 0000000000000141 [ 26.765826] RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 0000000000445689 [ 26.773077] RDX: 0000000000000020 RSI: 0000000020000180 RDI: 0000000000000002 [ 26.780326] RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000 [ 26.787576] R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000000000 [ 26.794827] R13: 00007ffc600362ef R14: 00007f0fc7b719c0 R15: 0000000000000005 [ 26.802080] Modules linked in: [ 26.805258] Dumping ftrace buffer: [ 26.808774] (ftrace buffer empty) [ 26.812514] ---[ end trace 864cdafb5e4893e5 ]--- [ 26.817404] RIP: 0010:do_raw_spin_lock+0x27/0x200 [ 26.822239] 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 [ 26.841387] RSP: 0018:ffff8801add177c8 EFLAGS: 00010292 [ 26.846752] RAX: dffffc0000000000 RBX: 0000000000000230 RCX: 0000000000000000 [ 26.854063] RDX: 0000000000000046 RSI: 0000000000000000 RDI: 0000000000000234 [ 26.861338] RBP: ffff8801add177f0 R08: 0000000000000001 R09: 0000000000000000 [ 26.868608] R10: ffffed0035a585fe R11: ffff8801ad2c2ff3 R12: dffffc0000000000 [ 26.875891] R13: ffff8801b8506540 R14: ffff8801cb8bd498 R15: ffff8801cb8bd480 [ 26.883165] FS: 00007f0fc7b71700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 26.891392] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.897273] CR2: 00007ffc3b062e70 CR3: 00000001afa1b000 CR4: 00000000001406f0 [ 26.904556] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.911833] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.919102] Kernel panic - not syncing: Fatal exception in interrupt [ 26.925977] Dumping ftrace buffer: [ 26.929497] (ftrace buffer empty) [ 26.933187] Kernel Offset: disabled [ 26.936793] Rebooting in 86400 seconds..