[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 22.901946] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 28.651412] random: sshd: uninitialized urandom read (32 bytes read) [ 29.019232] random: sshd: uninitialized urandom read (32 bytes read) [ 29.570791] random: sshd: uninitialized urandom read (32 bytes read) [ 29.742224] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.53' (ECDSA) to the list of known hosts. [ 35.471142] 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 36.264631] kasan: CONFIG_KASAN_INLINE enabled [ 36.269404] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 36.276948] general protection fault: 0000 [#1] SMP KASAN [ 36.282472] CPU: 1 PID: 4958 Comm: kworker/1:49 Not tainted 4.18.0+ #191 [ 36.289286] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.298625] Workqueue: events smc_tcp_listen_work [ 36.303455] RIP: 0010:kernel_accept+0x5a/0x310 [ 36.308021] Code: 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 5d 20 48 8d bb 48 03 00 00 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 14 02 00 00 48 8d 7b 10 0f b6 [ 36.326993] RSP: 0018:ffff8801ca7e75a8 EFLAGS: 00010206 [ 36.332356] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 36.339605] RDX: 0000000000000069 RSI: ffffffff8508e7ef RDI: 0000000000000348 [ 36.346854] RBP: ffff8801ca7e75d8 R08: ffff8801d98c6d38 R09: 0000000000000006 [ 36.354116] R10: ffff8801d98c6500 R11: 0000000000000000 R12: ffff8801ca7e7688 [ 36.361370] R13: ffff8801aaa02640 R14: 0000000000000000 R15: ffff8801d9514bb0 [ 36.368663] FS: 0000000000000000(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 [ 36.376865] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.382721] CR2: 0000000020000100 CR3: 00000001af3f5000 CR4: 00000000001406e0 [ 36.389968] Call Trace: [ 36.392539] smc_tcp_listen_work+0x218/0x11c0 [ 36.397022] ? smc_ioctl+0x1270/0x1270 [ 36.400893] ? __lock_is_held+0xb5/0x140 [ 36.404956] process_one_work+0xc73/0x1ba0 [ 36.409177] ? trace_hardirqs_on+0x10/0x10 [ 36.413397] ? pwq_dec_nr_in_flight+0x4a0/0x4a0 [ 36.418047] ? __switch_to_asm+0x34/0x70 [ 36.422114] ? __switch_to_asm+0x40/0x70 [ 36.426166] ? __switch_to_asm+0x34/0x70 [ 36.430205] ? __switch_to_asm+0x40/0x70 [ 36.434245] ? __switch_to_asm+0x34/0x70 [ 36.438284] ? __switch_to_asm+0x40/0x70 [ 36.442322] ? __switch_to_asm+0x34/0x70 [ 36.446567] ? __switch_to_asm+0x40/0x70 [ 36.450608] ? __switch_to_asm+0x34/0x70 [ 36.454652] ? __sched_text_start+0x8/0x8 [ 36.458784] ? lock_downgrade+0x8f0/0x8f0 [ 36.462917] ? graph_lock+0x170/0x170 [ 36.466702] ? graph_lock+0x170/0x170 [ 36.470492] ? lock_acquire+0x1e4/0x540 [ 36.474455] ? worker_thread+0x3dc/0x13c0 [ 36.478583] ? lock_downgrade+0x8f0/0x8f0 [ 36.482814] ? lock_release+0xa30/0xa30 [ 36.486791] ? kasan_check_read+0x11/0x20 [ 36.490939] ? do_raw_spin_unlock+0xa7/0x2f0 [ 36.495352] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 36.499919] ? kasan_check_write+0x14/0x20 [ 36.504133] ? do_raw_spin_lock+0xc1/0x200 [ 36.508354] worker_thread+0x189/0x13c0 [ 36.512310] ? __switch_to_asm+0x34/0x70 [ 36.516363] ? __switch_to_asm+0x34/0x70 [ 36.520406] ? __switch_to_asm+0x40/0x70 [ 36.524449] ? process_one_work+0x1ba0/0x1ba0 [ 36.528928] ? graph_lock+0x170/0x170 [ 36.532713] ? __sched_text_start+0x8/0x8 [ 36.536845] ? graph_lock+0x170/0x170 [ 36.540639] ? retint_kernel+0x10/0x10 [ 36.544504] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 36.549512] ? find_held_lock+0x36/0x1c0 [ 36.553556] ? lock_downgrade+0x8f0/0x8f0 [ 36.557787] ? kasan_check_read+0x11/0x20 [ 36.561930] ? do_raw_spin_unlock+0xa7/0x2f0 [ 36.566318] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 36.570882] ? _raw_spin_unlock_irqrestore+0x74/0xc0 [ 36.575965] ? __kthread_parkme+0x58/0x1b0 [ 36.580176] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 36.585175] ? trace_hardirqs_on+0xd/0x10 [ 36.589318] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 36.594854] ? __kthread_parkme+0x106/0x1b0 [ 36.599163] kthread+0x35a/0x420 [ 36.602531] ? process_one_work+0x1ba0/0x1ba0 [ 36.607010] ? kthread_bind+0x40/0x40 [ 36.610815] ret_from_fork+0x3a/0x50 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 36.614508] Modules linked in: [ 36.617682] Dumping ftrace buffer: [ 36.621206] (ftrace buffer empty) [ 36.624986] ---[ end trace 1f141f3641a7a625 ]--- [ 36.629776] RIP: 0010:kernel_accept+0x5a/0x310 [ 36.634377] Code: 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 5d 20 48 8d bb 48 03 00 00 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 14 02 00 00 48 8d 7b 10 0f b6 [ 36.653303] RSP: 0018:ffff8801ca7e75a8 EFLAGS: 00010206 [ 36.658679] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000 [ 36.665952] RDX: 0000000000000069 RSI: ffffffff8508e7ef RDI: 0000000000000348 [ 36.673233] RBP: ffff8801ca7e75d8 R08: ffff8801d98c6d38 R09: 0000000000000006 [ 36.680583] R10: ffff8801d98c6500 R11: 0000000000000000 R12: ffff8801ca7e7688 [ 36.687886] R13: ffff8801aaa02640 R14: 0000000000000000 R15: ffff8801d9514bb0 [ 36.695161] FS: 0000000000000000(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 [ 36.703432] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 36.709308] CR2: 0000000020000100 CR3: 00000001af3f5000 CR4: 00000000001406e0 [ 36.716591] Kernel panic - not syncing: Fatal exception [ 36.722195] Dumping ftrace buffer: [ 36.725716] (ftrace buffer empty) [ 36.729403] Kernel Offset: disabled [ 36.733021] Rebooting in 86400 seconds..