[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 19.764059] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 21.249776] random: sshd: uninitialized urandom read (32 bytes read) [ 21.712156] random: sshd: uninitialized urandom read (32 bytes read) [ 22.618948] random: sshd: uninitialized urandom read (32 bytes read) [ 46.844305] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.12' (ECDSA) to the list of known hosts. [ 52.224777] random: sshd: uninitialized urandom read (32 bytes read) [ 52.341366] IPVS: ftp: loaded support on port[0] = 21 [ 52.342035] IPVS: ftp: loaded support on port[0] = 21 [ 52.354523] IPVS: ftp: loaded support on port[0] = 21 [ 52.355712] IPVS: ftp: loaded support on port[0] = 21 [ 52.361421] IPVS: ftp: loaded support on port[0] = 21 [ 52.367452] IPVS: ftp: loaded support on port[0] = 21 [ 52.370393] IPVS: ftp: loaded support on port[0] = 21 [ 52.377190] IPVS: ftp: loaded support on port[0] = 21 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 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 [ 56.821478] kasan: CONFIG_KASAN_INLINE enabled [ 56.826286] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 56.833723] general protection fault: 0000 [#1] SMP KASAN [ 56.839267] CPU: 1 PID: 6778 Comm: kworker/1:180 Not tainted 4.18.0-rc6+ #168 [ 56.846544] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.855906] Workqueue: events smc_tcp_listen_work [ 56.860762] RIP: 0010:kernel_accept+0x34/0x310 [ 56.865331] Code: d6 41 55 49 89 fd 41 54 49 89 f4 53 48 83 ec 08 e8 e1 2d 77 fc 49 8d 7d 20 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 4a 02 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b [ 56.884590] RSP: 0018:ffff8801d3bff5a8 EFLAGS: 00010202 [ 56.889956] RAX: dffffc0000000000 RBX: ffff8801b3aae540 RCX: 0000000000000000 [ 56.897228] RDX: 0000000000000004 RSI: ffffffff8504ea6f RDI: 0000000000000020 [ 56.904536] RBP: ffff8801d3bff5d8 R08: ffff8801b232e8b8 R09: 0000000000000006 [ 56.911809] R10: ffff8801b232e080 R11: 0000000000000000 R12: ffff8801d3bff688 [ 56.919085] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801d3bff708 [ 56.926358] FS: 0000000000000000(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 [ 56.934587] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 56.940622] CR2: 00000000013a3978 CR3: 00000001d97b5000 CR4: 00000000001406e0 [ 56.947878] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 56.955156] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 56.962418] Call Trace: [ 56.964994] smc_tcp_listen_work+0x222/0xef0 [ 56.969389] ? smc_link_save_peer_info+0x320/0x320 [ 56.974311] ? __lock_is_held+0xb5/0x140 [ 56.978359] process_one_work+0xc73/0x1ba0 [ 56.982572] ? trace_hardirqs_on+0x10/0x10 [ 56.986791] ? pwq_dec_nr_in_flight+0x4a0/0x4a0 [ 56.991440] ? kasan_check_read+0x11/0x20 [ 56.995567] ? do_raw_spin_unlock+0xa7/0x2f0 [ 56.999968] ? graph_lock+0x170/0x170 [ 57.003755] ? do_raw_spin_lock+0xc1/0x200 [ 57.007975] ? lock_downgrade+0x8f0/0x8f0 [ 57.012104] ? kasan_check_read+0x11/0x20 [ 57.016229] ? do_raw_spin_unlock+0xa7/0x2f0 [ 57.020626] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 57.025187] ? kasan_check_write+0x14/0x20 [ 57.029400] ? do_raw_spin_lock+0xc1/0x200 [ 57.033618] ? trace_hardirqs_off+0xd/0x10 [ 57.037836] ? _raw_spin_unlock_irqrestore+0x63/0xc0 [ 57.042919] ? __wake_up_common_lock+0x1d0/0x330 [ 57.047656] ? __wake_up_common+0x740/0x740 [ 57.051957] ? need_to_create_worker+0x1c8/0x280 [ 57.056693] ? del_timer+0x150/0x150 [ 57.060391] ? kasan_check_write+0x14/0x20 [ 57.064605] ? do_raw_spin_lock+0xc1/0x200 [ 57.068821] worker_thread+0x189/0x13c0 [ 57.072784] ? process_one_work+0x1ba0/0x1ba0 [ 57.077262] ? graph_lock+0x170/0x170 [ 57.081050] ? graph_lock+0x170/0x170 [ 57.084842] ? find_held_lock+0x36/0x1c0 [ 57.088896] ? find_held_lock+0x36/0x1c0 [ 57.092954] ? lock_downgrade+0x8f0/0x8f0 [ 57.097086] ? kasan_check_read+0x11/0x20 [ 57.101213] ? do_raw_spin_unlock+0xa7/0x2f0 [ 57.105603] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 57.110687] ? __kthread_parkme+0x58/0x1b0 [ 57.114907] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 57.119907] ? trace_hardirqs_on+0xd/0x10 [ 57.124036] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 57.129554] ? __kthread_parkme+0x106/0x1b0 [ 57.133865] kthread+0x345/0x410 [ 57.137216] ? process_one_work+0x1ba0/0x1ba0 [ 57.141688] ? kthread_bind+0x40/0x40 [ 57.145470] ret_from_fork+0x3a/0x50 [ 57.149164] Modules linked in: [ 57.152341] Dumping ftrace buffer: [ 57.155858] (ftrace buffer empty) [ 57.159595] ---[ end trace 1f9a2f178ca61fc8 ]--- [ 57.164373] RIP: 0010:kernel_accept+0x34/0x310 [ 57.168959] Code: d6 41 55 49 89 fd 41 54 49 89 f4 53 48 83 ec 08 e8 e1 2d 77 fc 49 8d 7d 20 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 4a 02 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b [ 57.188194] RSP: 0018:ffff8801d3bff5a8 EFLAGS: 00010202 [ 57.193581] RAX: dffffc0000000000 RBX: ffff8801b3aae540 RCX: 0000000000000000 [ 57.200867] RDX: 0000000000000004 RSI: ffffffff8504ea6f RDI: 0000000000000020 [ 57.208157] RBP: ffff8801d3bff5d8 R08: ffff8801b232e8b8 R09: 0000000000000006 [ 57.215447] R10: ffff8801b232e080 R11: 0000000000000000 R12: ffff8801d3bff688 [ 57.222760] R13: 0000000000000000 R14: 0000000000000000 R15: ffff8801d3bff708 [ 57.230056] FS: 0000000000000000(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 [ 57.238315] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 57.245067] CR2: 00000000013a3978 CR3: 0000000007e6a000 CR4: 00000000001406e0 [ 57.252355] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 57.259641] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 57.266929] Kernel panic - not syncing: Fatal exception [ 57.272754] Dumping ftrace buffer: [ 57.276284] (ftrace buffer empty) [ 57.279969] Kernel Offset: disabled [ 57.283572] Rebooting in 86400 seconds..