[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 16.312706] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 17.605446] random: sshd: uninitialized urandom read (32 bytes read) [ 17.861000] random: sshd: uninitialized urandom read (32 bytes read) [ 18.554167] random: sshd: uninitialized urandom read (32 bytes read) [ 18.711919] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.8' (ECDSA) to the list of known hosts. [ 24.275766] 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 [ 24.459890] kasan: CONFIG_KASAN_INLINE enabled [ 24.464506] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 24.471871] general protection fault: 0000 [#1] SMP KASAN [ 24.477390] CPU: 0 PID: 4458 Comm: syz-executor126 Not tainted 4.18.0-rc3+ #45 [ 24.484727] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.494073] RIP: 0010:do_raw_spin_lock+0x27/0x200 [ 24.498889] 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 [ 24.518052] RSP: 0018:ffff8801ac9f77c8 EFLAGS: 00010292 [ 24.523404] RAX: dffffc0000000000 RBX: 0000000000000230 RCX: 0000000000000000 [ 24.530654] RDX: 0000000000000046 RSI: 0000000000000000 RDI: 0000000000000234 [ 24.537907] RBP: ffff8801ac9f77f0 R08: 0000000000000001 R09: 0000000000000000 [ 24.545156] R10: ffffed003504d31e R11: ffff8801a82698f3 R12: dffffc0000000000 [ 24.552407] R13: ffff8801b0040280 R14: ffff8801cd707d18 R15: ffff8801cd707d00 [ 24.559660] FS: 00007ff814dde700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 24.567865] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.573727] CR2: 000055ce31f1aaa8 CR3: 00000001ad88f000 CR4: 00000000001406f0 [ 24.581002] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.588257] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.595504] Call Trace: [ 24.598078] _raw_spin_lock_bh+0x39/0x40 [ 24.602126] ? smap_list_hash_remove+0xa3/0x470 [ 24.606778] smap_list_hash_remove+0xa3/0x470 [ 24.611255] ? psock_map_pop.isra.26+0x3b0/0x3b0 [ 24.615997] ? do_raw_spin_unlock+0xa7/0x2f0 [ 24.620392] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 24.624957] ? sock_hash_ctx_update_elem.isra.27+0xe5e/0x1690 [ 24.630832] ? trace_hardirqs_on+0xd/0x10 [ 24.634984] ? __local_bh_enable_ip+0x161/0x230 [ 24.639641] sock_hash_ctx_update_elem.isra.27+0x1140/0x1690 [ 24.645434] ? sock_map_free+0x530/0x530 [ 24.649483] ? save_stack+0xa9/0xd0 [ 24.653097] ? __fget+0x414/0x670 [ 24.656533] ? expand_files.part.8+0x9c0/0x9c0 [ 24.661119] ? lock_acquire+0x1e4/0x540 [ 24.665077] ? fs_reclaim_acquire+0x20/0x20 [ 24.669383] ? lock_acquire+0x1e4/0x540 [ 24.673346] sock_hash_update_elem+0x157/0x2f0 [ 24.677915] ? bpf_sock_hash_update+0x90/0x90 [ 24.682392] ? lock_release+0xa30/0xa30 [ 24.686364] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 24.691888] ? bpf_sock_hash_update+0x90/0x90 [ 24.696365] map_update_elem+0x5c4/0xc90 [ 24.700408] __x64_sys_bpf+0x32d/0x510 [ 24.704275] ? bpf_prog_get+0x20/0x20 [ 24.708153] do_syscall_64+0x1b9/0x820 [ 24.712026] ? finish_task_switch+0x1d3/0x890 [ 24.716505] ? syscall_return_slowpath+0x5e0/0x5e0 [ 24.721420] ? syscall_return_slowpath+0x31d/0x5e0 [ 24.726343] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 24.731346] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 24.736193] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 24.741364] RIP: 0033:0x445689 [ 24.744532] 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 [ 24.763694] RSP: 002b:00007ff814ddddb8 EFLAGS: 00000297 ORIG_RAX: 0000000000000141 [ 24.771383] RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 0000000000445689 [ 24.778635] RDX: 0000000000000020 RSI: 0000000020000180 RDI: 0000000000000002 [ 24.785887] RBP: 00000000006dac20 R08: 0000000000000000 R09: 0000000000000000 [ 24.793137] R10: 0000000000000000 R11: 0000000000000297 R12: 0000000000000000 [ 24.800392] R13: 00007ffc330ba9af R14: 00007ff814dde9c0 R15: 0000000000000005 [ 24.807729] Modules linked in: [ 24.810906] Dumping ftrace buffer: [ 24.814424] (ftrace buffer empty) [ 24.818140] ---[ end trace 13b90c74a3ef0f0b ]--- [ 24.822894] RIP: 0010:do_raw_spin_lock+0x27/0x200 [ 24.827721] 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 [ 24.846889] RSP: 0018:ffff8801ac9f77c8 EFLAGS: 00010292 [ 24.852243] RAX: dffffc0000000000 RBX: 0000000000000230 RCX: 0000000000000000 [ 24.859502] RDX: 0000000000000046 RSI: 0000000000000000 RDI: 0000000000000234 [ 24.866761] RBP: ffff8801ac9f77f0 R08: 0000000000000001 R09: 0000000000000000 [ 24.874030] R10: ffffed003504d31e R11: ffff8801a82698f3 R12: dffffc0000000000 [ 24.881309] R13: ffff8801b0040280 R14: ffff8801cd707d18 R15: ffff8801cd707d00 [ 24.888581] FS: 00007ff814dde700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 [ 24.896798] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.902667] CR2: 000055ce31f1aaa8 CR3: 00000001ad88f000 CR4: 00000000001406f0 [ 24.909929] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.917190] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.924451] Kernel panic - not syncing: Fatal exception in interrupt [ 24.931364] Dumping ftrace buffer: [ 24.934884] (ftrace buffer empty) [ 24.938567] Kernel Offset: disabled [ 24.942430] Rebooting in 86400 seconds..