syzbot

random: sshd: uninitialized urandom read (32 bytes read)
random: sshd: uninitialized urandom read (32 bytes read)
random: sshd: uninitialized urandom read (32 bytes read)
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] SMP KASAN
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in:
CPU: 0 PID: 4549 Comm: syz-executor817 Not tainted 4.17.0-rc4+ #55
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:smc_ioctl+0x3dc/0x9f0 net/smc/af_smc.c:1499
RSP: 0018:ffff8801acfbf770 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff8801d8f3d7c0 RCX: ffffffff87411b3f
RDX: 0000000000000004 RSI: ffffffff87411b4e RDI: 0000000000000020
RBP: ffff8801acfbf9d0 R08: ffff8801d893e6c0 R09: ffffed003b1a3b80
R10: ffffed003b1a3b80 R11: ffff8801d8d1dc03 R12: 1ffff100359f7ef1
R13: 0000000020000000 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000001a75880(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc7b5e0038 CR3: 00000001acb39000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 sock_do_ioctl+0xe4/0x3e0 net/socket.c:957
 sock_ioctl+0x30d/0x680 net/socket.c:1081
 vfs_ioctl fs/ioctl.c:46 [inline]
 file_ioctl fs/ioctl.c:500 [inline]
 do_vfs_ioctl+0x1cf/0x16a0 fs/ioctl.c:684
 ksys_ioctl+0xa9/0xd0 fs/ioctl.c:701
 __do_sys_ioctl fs/ioctl.c:708 [inline]
 __se_sys_ioctl fs/ioctl.c:706 [inline]
 __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:706
 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x43fca9
RSP: 002b:00007ffc7b40a4b8 EFLAGS: 00000213 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fca9
RDX: 0000000020000000 RSI: 0000000000005411 RDI: 0000000000000003
RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8
R10: 00000000004002c8 R11: 0000000000000213 R12: 00000000004015d0
R13: 0000000000401660 R14: 0000000000000000 R15: 0000000000000000
Code: fa 48 c1 ea 03 80 3c 02 00 0f 85 7d 05 00 00 4c 8b b3 90 04 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d 7e 20 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 47 05 00 00 45 8b 7e 20 4c 
RIP: smc_ioctl+0x3dc/0x9f0 net/smc/af_smc.c:1499 RSP: ffff8801acfbf770
---[ end trace b777dab148ac1e6e ]---