[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 15.942578] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 20.807995] random: sshd: uninitialized urandom read (32 bytes read) [ 20.963757] random: sshd: uninitialized urandom read (32 bytes read) [ 21.654173] random: sshd: uninitialized urandom read (32 bytes read) [ 41.283790] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.0.6' (ECDSA) to the list of known hosts. [ 46.698798] 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 [ 46.832077] kasan: CONFIG_KASAN_INLINE enabled [ 46.836722] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 46.844249] general protection fault: 0000 [#1] SMP KASAN [ 46.849779] CPU: 1 PID: 4374 Comm: kworker/1:9 Not tainted 4.18.0-rc6-next-20180725+ #18 [ 46.857989] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.867349] Workqueue: events smc_tcp_listen_work [ 46.872182] RIP: 0010:inet_accept+0xf2/0xa00 [ 46.876670] 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 [ 46.895683] RSP: 0018:ffff8801aff974b0 EFLAGS: 00010206 [ 46.901030] RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000005 [ 46.908298] RDX: dffffc0000000000 RSI: ffffffff85964766 RDI: 0000000000000028 [ 46.915566] RBP: ffff8801aff97598 R08: ffff8801afa285c0 R09: ffffed00353d12df [ 46.922823] R10: ffffed00353d12df R11: ffff8801a9e896fb R12: ffff8801a9e89640 [ 46.930078] R13: ffff8801aff974f0 R14: ffff8801aff97570 R15: 0000000000000000 [ 46.937337] FS: 0000000000000000(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 [ 46.945556] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 46.951421] CR2: 0000000020000240 CR3: 00000001c1dc3000 CR4: 00000000001406e0 [ 46.958677] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 46.965933] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 46.973195] Call Trace: [ 46.975773] ? prune_icache_sb+0x1c0/0x1c0 [ 46.979997] ? inet_recvmsg+0x6d0/0x6d0 [ 46.983957] ? trace_hardirqs_on+0xd/0x10 [ 46.988092] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 46.993628] ? get_next_ino+0x8b/0x110 [ 46.997509] ? security_socket_post_create+0x9f/0xd0 [ 47.002601] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 47.008129] ? sock_create_lite+0x4d/0x130 [ 47.012358] ? inet_recvmsg+0x6d0/0x6d0 [ 47.016321] kernel_accept+0x136/0x310 [ 47.020199] smc_tcp_listen_work+0x222/0xef0 [ 47.024598] ? smc_ioctl+0x1250/0x1250 [ 47.028473] ? lock_release+0xa30/0xa30 [ 47.032428] ? kasan_check_read+0x11/0x20 [ 47.036562] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 47.041130] ? read_word_at_a_time+0x20/0x20 [ 47.045527] ? compat_start_thread+0x80/0x80 [ 47.049924] process_one_work+0xc73/0x1ba0 [ 47.054146] ? trace_hardirqs_on+0x10/0x10 [ 47.058370] ? pwq_dec_nr_in_flight+0x4a0/0x4a0 [ 47.063032] ? lock_repin_lock+0x430/0x430 [ 47.067263] ? __sched_text_start+0x8/0x8 [ 47.071398] ? lock_downgrade+0x8f0/0x8f0 [ 47.075535] ? lock_acquire+0x1e4/0x540 [ 47.079497] ? __update_idle_core+0x304/0x610 [ 47.083979] ? kasan_check_write+0x14/0x20 [ 47.088205] ? __mutex_unlock_slowpath+0x197/0x8c0 [ 47.093123] ? lock_downgrade+0x8f0/0x8f0 [ 47.097261] ? lock_acquire+0x1e4/0x540 [ 47.101225] ? worker_thread+0x3dc/0x13c0 [ 47.105367] ? lock_downgrade+0x8f0/0x8f0 [ 47.109505] ? lock_release+0xa30/0xa30 [ 47.113468] ? kasan_check_read+0x11/0x20 [ 47.117608] ? do_raw_spin_unlock+0xa7/0x2f0 [ 47.122001] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 47.126566] ? kasan_check_write+0x14/0x20 [ 47.130784] ? do_raw_spin_lock+0xc1/0x200 [ 47.135005] worker_thread+0x189/0x13c0 [ 47.138968] ? process_one_work+0x1ba0/0x1ba0 [ 47.143454] ? __sched_text_start+0x8/0x8 [ 47.147596] ? finish_task_switch+0x1d3/0x870 [ 47.152080] ? lock_acquire+0x1e4/0x540 [ 47.156038] ? __kthread_parkme+0xd7/0x1b0 [ 47.160254] ? lock_downgrade+0x8f0/0x8f0 [ 47.164385] ? kasan_check_read+0x11/0x20 [ 47.168517] ? do_raw_spin_unlock+0xa7/0x2f0 [ 47.172906] ? do_raw_spin_trylock+0x1c0/0x1c0 [ 47.177474] ? 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 executing program executing program executing program executing program executing program [ 47.181691] ? trace_hardirqs_on+0xd/0x10 [ 47.185838] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 47.191373] ? __kthread_parkme+0x106/0x1b0 [ 47.195683] kthread+0x345/0x410 [ 47.199037] ? process_one_work+0x1ba0/0x1ba0 [ 47.203567] ? kthread_bind+0x40/0x40 [ 47.207388] ret_from_fork+0x3a/0x50 [ 47.211089] Modules linked in: [ 47.214269] Dumping ftrace buffer: [ 47.217788] (ftrace buffer empty) [ 47.221578] ---[ end trace 86937dc2a72c28cb ]--- [ 47.226355] RIP: 0010:inet_accept+0xf2/0xa00 [ 47.230774] 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 [ 47.249678] RSP: 0018:ffff8801aff974b0 EFLAGS: 00010206 [ 47.255054] RAX: 0000000000000000 RBX: dffffc0000000000 RCX: 0000000000000005 [ 47.262332] RDX: dffffc0000000000 RSI: ffffffff85964766 RDI: 0000000000000028 [ 47.269627] RBP: ffff8801aff97598 R08: ffff8801afa285c0 R09: ffffed00353d12df [ 47.276901] R10: ffffed00353d12df R11: ffff8801a9e896fb R12: ffff8801a9e89640 [ 47.284199] R13: ffff8801aff974f0 R14: ffff8801aff97570 R15: 0000000000000000 [ 47.291474] FS: 0000000000000000(0000) GS:ffff8801db100000(0000) knlGS:0000000000000000 [ 47.299709] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 47.305589] CR2: 0000000020000240 CR3: 00000001c1dc3000 CR4: 00000000001406e0 [ 47.312868] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 47.320137] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 47.327433] Kernel panic - not syncing: Fatal exception [ 47.333272] Dumping ftrace buffer: [ 47.336803] (ftrace buffer empty) [ 47.340499] Kernel Offset: disabled [ 47.344118] Rebooting in 86400 seconds..