[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 34.430263] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 37.759383] random: sshd: uninitialized urandom read (32 bytes read) [ 38.246371] random: sshd: uninitialized urandom read (32 bytes read) [ 40.124618] random: sshd: uninitialized urandom read (32 bytes read) [ 40.364639] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.32' (ECDSA) to the list of known hosts. [ 45.819207] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 45.940803] IPVS: ftp: loaded support on port[0] = 21 [ 45.982556] WARNING: CPU: 0 PID: 4604 at ./include/net/sock.h:644 smc_unhash_sk+0x37b/0x3f0 [ 45.991105] Kernel panic - not syncing: panic_on_warn set ... [ 45.991105] [ 45.998495] CPU: 0 PID: 4604 Comm: syz-executor644 Not tainted 4.18.0-rc5+ #29 [ 46.005851] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 46.015202] Call Trace: [ 46.017805] dump_stack+0x185/0x1e0 [ 46.021453] panic+0x3d0/0x9b0 [ 46.024651] __warn+0x40f/0x580 [ 46.027928] ? smc_unhash_sk+0x37b/0x3f0 [ 46.031997] report_bug+0x72a/0x880 [ 46.035622] ? smc_unhash_sk+0x37b/0x3f0 [ 46.039706] ? smc_unhash_sk+0x37b/0x3f0 [ 46.043798] do_error_trap+0x1fe/0x710 [ 46.047755] ? sock_destroy_inode+0xab/0xd0 [ 46.052101] ? sock_alloc_inode+0x2b0/0x2b0 [ 46.056449] do_invalid_op+0x46/0x50 [ 46.060194] invalid_op+0x14/0x20 [ 46.063646] RIP: 0010:smc_unhash_sk+0x37b/0x3f0 [ 46.068295] Code: d5 f7 e9 e5 fe ff ff 8b 7d d4 e8 30 95 d5 f7 e9 f7 fe ff ff 8b 3a e8 24 95 d5 f7 41 83 fe 01 0f 85 11 ff ff ff e8 95 e0 79 f7 <0f> 0b 4d 85 e4 0f 84 0f ff ff ff 8b 7d d4 e8 02 95 d5 f7 4d 85 e4 [ 46.087644] RSP: 0018:ffff8801a8cff9f8 EFLAGS: 00010293 [ 46.093126] RAX: ffffffff89ee446b RBX: ffff8801bb110080 RCX: ffff88018f9d1d80 [ 46.100400] RDX: 0000000000000000 RSI: aaaaaaaaaaaab000 RDI: ffffea000a626600 [ 46.107663] RBP: ffff8801a8cffa78 R08: 0000000000480020 R09: 0000000000000002 [ 46.114935] R10: 0000000000000000 R11: ffffffff89ee40f0 R12: 0000000000000000 [ 46.122197] R13: ffff8801bb110000 R14: 0000000000000001 R15: 00000000a88000a1 [ 46.129477] ? smc_hash_sk+0x3a0/0x3a0 [ 46.133364] ? smc_unhash_sk+0x37b/0x3f0 [ 46.137451] ? smc_unhash_sk+0x37b/0x3f0 [ 46.141530] ? smc_hash_sk+0x3a0/0x3a0 [ 46.145412] smc_release+0x81b/0x900 [ 46.149158] ? smc_sock_alloc+0x830/0x830 [ 46.153335] sock_close+0x11e/0x360 [ 46.156961] __fput+0x458/0xa30 [ 46.160254] ? fput+0x300/0x300 [ 46.163546] ____fput+0x37/0x40 [ 46.166834] task_work_run+0x22e/0x2b0 [ 46.170724] do_exit+0x110e/0x3930 [ 46.174289] do_group_exit+0x1a0/0x360 [ 46.178195] __do_sys_exit_group+0x21/0x30 [ 46.182458] __se_sys_exit_group+0x14/0x20 [ 46.186711] __x64_sys_exit_group+0x4c/0x50 [ 46.191055] ? do_group_exit+0x360/0x360 [ 46.195126] do_syscall_64+0x15b/0x230 [ 46.199019] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 46.204206] RIP: 0033:0x440789 [ 46.207382] Code: Bad RIP value. [ 46.210760] RSP: 002b:00007fff647c8e88 EFLAGS: 00000206 ORIG_RAX: 00000000000000e7 [ 46.218470] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 0000000000440789 [ 46.225735] RDX: 0000000000440789 RSI: 0000000000000000 RDI: 0000000000000001 [ 46.232999] RBP: 00000000006cb018 R08: 0000000000000010 R09: 0000000000401d00 [ 46.240273] R10: 0000000020000140 R11: 0000000000000206 R12: 0000000000401c70 [ 46.247534] R13: 0000000000401d00 R14: 0000000000000000 R15: 0000000000000000 [ 46.255350] Dumping ftrace buffer: [ 46.258880] (ftrace buffer empty) [ 46.262594] Kernel Offset: disabled [ 46.266219] Rebooting in 86400 seconds..