[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[ 34.285445] random: sshd: uninitialized urandom read (32 bytes read) [?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 38.905614] random: sshd: uninitialized urandom read (32 bytes read) [ 39.384747] random: sshd: uninitialized urandom read (32 bytes read) [ 40.762407] random: sshd: uninitialized urandom read (32 bytes read) [ 47.061947] random: sshd: uninitialized urandom read (32 bytes read) Warning: Permanently added '10.128.10.50' (ECDSA) to the list of known hosts. [ 52.632636] random: sshd: uninitialized urandom read (32 bytes read) executing program [ 52.753044] WARNING: CPU: 0 PID: 4556 at ./include/net/sock.h:644 smc_unhash_sk+0x37b/0x3f0 [ 52.761574] Kernel panic - not syncing: panic_on_warn set ... [ 52.761574] [ 52.768942] CPU: 0 PID: 4556 Comm: syz-executor801 Not tainted 4.18.0-rc4+ #26 [ 52.776300] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.785651] Call Trace: [ 52.788257] dump_stack+0x185/0x1e0 [ 52.791904] panic+0x3d0/0x9b0 [ 52.795106] ? hash_netport6_del+0x21a/0x1a10 [ 52.799615] __warn+0x40f/0x580 [ 52.802894] ? smc_unhash_sk+0x37b/0x3f0 [ 52.806974] report_bug+0x72a/0x880 [ 52.810602] ? smc_unhash_sk+0x37b/0x3f0 [ 52.814661] ? smc_unhash_sk+0x37b/0x3f0 [ 52.818742] do_error_trap+0x1fe/0x710 [ 52.822656] ? sock_destroy_inode+0xab/0xd0 [ 52.827000] ? sock_alloc_inode+0x2b0/0x2b0 [ 52.831353] do_invalid_op+0x46/0x50 [ 52.835094] invalid_op+0x14/0x20 [ 52.838558] RIP: 0010:smc_unhash_sk+0x37b/0x3f0 [ 52.843248] Code: d5 f7 e9 e5 fe ff ff 8b 7d d4 e8 30 a8 d5 f7 e9 f7 fe ff ff 8b 3a e8 24 a8 d5 f7 41 83 fe 01 0f 85 11 ff ff ff e8 a5 f6 79 f7 <0f> 0b 4d 85 e4 0f 84 0f ff ff ff 8b 7d d4 e8 02 a8 d5 f7 4d 85 e4 [ 52.863884] RSP: 0018:ffff88019178f9f8 EFLAGS: 00010293 [ 52.869283] RAX: ffffffff89ee346b RBX: ffff8801adfa4080 RCX: ffff88018be89d80 [ 52.876553] RDX: 0000000000000000 RSI: aaaaaaaaaaaab000 RDI: ffffea000a13dd80 [ 52.883844] RBP: ffff88019178fa78 R08: 0000000000480020 R09: 0000000000000002 [ 52.891456] R10: 0000000000000000 R11: ffffffff89ee30f0 R12: 0000000000000000 [ 52.899416] R13: ffff8801adfa4000 R14: 0000000000000001 R15: 00000000d8600099 [ 52.906714] ? smc_hash_sk+0x3a0/0x3a0 [ 52.910604] ? smc_unhash_sk+0x37b/0x3f0 [ 52.914789] ? smc_unhash_sk+0x37b/0x3f0 [ 52.918882] ? smc_hash_sk+0x3a0/0x3a0 [ 52.922763] smc_release+0x81b/0x900 [ 52.926500] ? smc_sock_alloc+0x830/0x830 [ 52.930666] sock_close+0x11e/0x360 [ 52.934489] __fput+0x458/0xa30 [ 52.937784] ? fput+0x300/0x300 [ 52.941083] ____fput+0x37/0x40 [ 52.944554] task_work_run+0x22e/0x2b0 [ 52.948460] do_exit+0x110e/0x3930 [ 52.952053] do_group_exit+0x1a0/0x360 [ 52.955978] __do_sys_exit_group+0x21/0x30 [ 52.960249] __se_sys_exit_group+0x14/0x20 [ 52.964600] __x64_sys_exit_group+0x4c/0x50 [ 52.968943] ? do_group_exit+0x360/0x360 [ 52.973028] do_syscall_64+0x15b/0x230 [ 52.976947] entry_SYSCALL_64_after_hwframe+0x63/0xe7 [ 52.982143] RIP: 0033:0x43ec88 [ 52.985321] Code: Bad RIP value. [ 52.988881] RSP: 002b:00007ffe5418d508 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 [ 52.996594] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000043ec88 [ 53.003859] RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 [ 53.011123] RBP: 00000000004be548 R08: 00000000000000e7 R09: ffffffffffffffd0 [ 53.018392] R10: 0000000020000000 R11: 0000000000000246 R12: 0000000000000001 [ 53.025674] R13: 00000000006d0180 R14: 0000000000000000 R15: 0000000000000000 [ 53.033478] Dumping ftrace buffer: [ 53.037029] (ftrace buffer empty) [ 53.040728] Kernel Offset: disabled [ 53.044357] Rebooting in 86400 seconds..