[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 15.483826] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 19.678321] random: sshd: uninitialized urandom read (32 bytes read) [ 19.976714] random: sshd: uninitialized urandom read (32 bytes read) [ 20.703120] random: sshd: uninitialized urandom read (32 bytes read) [ 24.195912] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.58' (ECDSA) to the list of known hosts. [ 29.627538] 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 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 30.753438] kasan: CONFIG_KASAN_INLINE enabled [ 30.758180] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 30.765548] general protection fault: 0000 [#1] SMP KASAN [ 30.771069] CPU: 1 PID: 5524 Comm: kworker/1:120 Not tainted 4.18.0-rc5+ #137 [ 30.778498] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.787862] Workqueue: events smc_tcp_listen_work [ 30.792709] RIP: 0010:inet_accept+0xf2/0xa00 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 30.797095] Code: 84 d2 74 09 80 fa 03 0f 8e 95 07 00 00 48 8d 78 28 41 c7 46 80 ea ff ff ff 48 ba 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 <80> 3c 11 00 0f 85 96 07 00 00 48 b9 00 00 00 00 00 fc ff df 48 8b [ 30.816390] RSP: 0018:ffff8801ce71f4b0 EFLAGS: 00010206 [ 30.821738] RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000005 [ 30.828989] RDX: dffffc0000000000 RSI: ffffffff8677aa46 RDI: 0000000000000028 [ 30.836248] RBP: ffff8801ce71f598 R08: ffff8801ae2e8480 R09: ffffed0037e1236f [ 30.843500] R10: ffffed0037e1236f R11: ffff8801bf091b7b R12: ffff8801bf091ac0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 30.850750] R13: ffff8801ce71f4f0 R14: ffff8801ce71f570 R15: 0000000000000000 [ 30.858015] FS: 0000000000000000(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 30.866224] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.872090] CR2: 00000000200024c0 CR3: 0000000008e6a000 CR4: 00000000001406e0 [ 30.879343] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.886612] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.893857] Call Trace: [ 30.896537] ? prune_icache_sb+0x1b0/0x1b0 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 30.900752] ? inet_recvmsg+0x6d0/0x6d0 [ 30.904705] ? trace_hardirqs_on+0xd/0x10 [ 30.908834] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 30.914448] ? get_next_ino+0x8b/0x110 [ 30.918321] ? security_socket_post_create+0x9f/0xd0 [ 30.923415] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 30.928944] ? sock_create_lite+0x4d/0x130 [ 30.933168] ? inet_recvmsg+0x6d0/0x6d0 [ 30.937126] kernel_accept+0x136/0x310 [ 30.940997] smc_tcp_listen_work+0x222/0xef0 [ 30.945396] ? smc_ioctl+0x1250/0x1250 [ 30.949273] ? lock_release+0xa30/0xa30 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 30.953227] ? kasan_check_read+0x11/0x20 [ 30.957365] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 30.961952] ? read_word_at_a_time+0x20/0x20 [ 30.966347] ? compat_start_thread+0x80/0x80 [ 30.970765] process_one_work+0xc73/0x1ba0 [ 30.974996] ? trace_hardirqs_on+0x10/0x10 [ 30.979230] ? pwq_dec_nr_in_flight+0x4a0/0x4a0 [ 30.983889] ? lock_repin_lock+0x430/0x430 [ 30.988112] ? __sched_text_start+0x8/0x8 [ 30.992237] ? lock_downgrade+0x8f0/0x8f0 [ 30.996377] ? lock_acquire+0x1e4/0x540 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 31.000332] ? __update_idle_core+0x304/0x610 [ 31.004825] ? kasan_check_write+0x14/0x20 [ 31.009046] ? __mutex_unlock_slowpath+0x197/0x8c0 [ 31.015954] ? lock_downgrade+0x8f0/0x8f0 [ 31.020082] ? lock_acquire+0x1e4/0x540 [ 31.024045] ? worker_thread+0x3dc/0x13c0 [ 31.028190] ? lock_downgrade+0x8f0/0x8f0 [ 31.032327] ? lock_release+0xa30/0xa30 [ 31.036287] ? kasan_check_read+0x11/0x20 [ 31.040416] ? do_raw_spin_unlock+0xa7/0x2f0 [ 31.044823] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 31.049413] ? kasan_check_write+0x14/0x20 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 31.053649] ? do_raw_spin_lock+0xc1/0x200 [ 31.057868] worker_thread+0x189/0x13c0 [ 31.061829] ? process_one_work+0x1ba0/0x1ba0 [ 31.066310] ? __sched_text_start+0x8/0x8 [ 31.070443] ? finish_task_switch+0x1d3/0x870 [ 31.074923] ? lock_acquire+0x1e4/0x540 [ 31.078877] ? __kthread_parkme+0xd7/0x1b0 [ 31.083112] ? lock_downgrade+0x8f0/0x8f0 [ 31.087266] ? kasan_check_read+0x11/0x20 [ 31.091412] ? do_raw_spin_unlock+0xa7/0x2f0 [ 31.095803] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 31.100378] ? kasan_check_write+0x14/0x20 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 31.104602] ? trace_hardirqs_on+0xd/0x10 [ 31.108735] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 31.114252] ? __kthread_parkme+0x106/0x1b0 [ 31.118553] kthread+0x345/0x410 [ 31.121897] ? process_one_work+0x1ba0/0x1ba0 [ 31.126371] ? kthread_bind+0x40/0x40 [ 31.130162] ret_from_fork+0x3a/0x50 [ 31.133853] Modules linked in: [ 31.137031] Dumping ftrace buffer: [ 31.140568] (ftrace buffer empty) [ 31.144308] ---[ end trace de997303bb6ff5f8 ]--- [ 31.149071] RIP: 0010:inet_accept+0xf2/0xa00 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 31.153484] Code: 84 d2 74 09 80 fa 03 0f 8e 95 07 00 00 48 8d 78 28 41 c7 46 80 ea ff ff ff 48 ba 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 <80> 3c 11 00 0f 85 96 07 00 00 48 b9 00 00 00 00 00 fc ff df 48 8b [ 31.172632] RSP: 0018:ffff8801ce71f4b0 EFLAGS: 00010206 [ 31.178034] RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000005 [ 31.185329] RDX: dffffc0000000000 RSI: ffffffff8677aa46 RDI: 0000000000000028 [ 31.192598] RBP: ffff8801ce71f598 R08: ffff8801ae2e8480 R09: ffffed0037e1236f executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 31.199921] R10: ffffed0037e1236f R11: ffff8801bf091b7b R12: ffff8801bf091ac0 [ 31.207226] R13: ffff8801ce71f4f0 R14: ffff8801ce71f570 R15: 0000000000000000 [ 31.214511] FS: 0000000000000000(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 [ 31.222886] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 31.228772] CR2: 00000000200024c0 CR3: 0000000008e6a000 CR4: 00000000001406e0 [ 31.236035] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 31.243301] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 31.250564] Kernel panic - not syncing: Fatal exception [ 31.256403] Dumping ftrace buffer: [ 31.259920] (ftrace buffer empty) [ 31.263623] Kernel Offset: disabled [ 31.267232] Rebooting in 86400 seconds..