random: sshd: uninitialized urandom read (32 bytes read) random: sshd: uninitialized urandom read (32 bytes read) random: sshd: uninitialized urandom read (32 bytes read) random: sshd: uninitialized urandom read (32 bytes read) random: sshd: uninitialized urandom read (32 bytes read) BUG: unable to handle kernel NULL pointer dereference at 0000000000000028 PGD 80000001982d8067 P4D 80000001982d8067 PUD 198684067 PMD 0 Oops: 0000 [#1] SMP PTI Dumping ftrace buffer: (ftrace buffer empty) Modules linked in: CPU: 1 PID: 4574 Comm: syz-executor302 Not tainted 4.17.0-rc3+ #88 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:smc_getsockopt+0xc6/0x1a0 net/smc/af_smc.c:1298 RSP: 0018:ffff8801988efd48 EFLAGS: 00010246 RAX: ffff8801994782d0 RBX: ffff88019a8988d8 RCX: ffff880000000000 RDX: ffff8801986e42d0 RSI: aaaaaaaaaaaab000 RDI: ffffea0000000000 RBP: ffff8801988efdb8 R08: 00000000200002c0 R09: 0000000000000002 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000028 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f78b7d91700(0000) GS:ffff88021fd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000028 CR3: 0000000198d4a000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __sys_getsockopt+0x49b/0x560 net/socket.c:1940 __do_sys_getsockopt net/socket.c:1951 [inline] __se_sys_getsockopt net/socket.c:1948 [inline] __x64_sys_getsockopt+0x15d/0x1c0 net/socket.c:1948 do_syscall_64+0x154/0x220 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x4454f9 RSP: 002b:00007f78b7d90db8 EFLAGS: 00000246 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 00000000006dac24 RCX: 00000000004454f9 RDX: 0000000000000010 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00000000006dac20 R08: 00000000200002c0 R09: 0000000000000000 R10: 0000000020000040 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffeb80aeadf R14: 00007f78b7d919c0 R15: 0000000000000001 Code: 0f 85 d0 00 00 00 4d 8b 37 4c 89 ff e8 54 bc 0f f8 4c 8b 38 44 8b 22 4c 89 75 b0 4d 8d 6e 28 4d 85 ff 0f 85 ba 00 00 00 45 89 e6 <4d> 8b 65 00 4c 89 ef e8 2e bc 0f f8 49 83 c4 70 48 83 38 00 0f RIP: smc_getsockopt+0xc6/0x1a0 net/smc/af_smc.c:1298 RSP: ffff8801988efd48 CR2: 0000000000000028 ---[ end trace fed8d275c1fcf6ec ]---