BUG: unable to handle kernel NULL pointer dereference at 0000000000000000
PGD 1c1b00067 P4D 1c1b00067 PUD 1855e2067 PMD 0 
Oops: 0010 [#1] SMP KASAN
CPU: 0 PID: 23371 Comm: syz-executor2 Not tainted 4.17.0+ #104
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:          (null)
Code: Bad RIP value.
RSP: 0018:ffff8801c577f4c0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff880180026000 RCX: 1ffffffff10eac85
RDX: ffff8801c577f9e0 RSI: ffff8801b600f900 RDI: ffff8801b65152c0
RBP: ffff8801c577f630 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801c577f9e0
R13: ffff880180026012 R14: 1ffff10038aefe9d R15: ffff880180026458
FS:  00007ff036d08700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000001d8c49000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 sock_poll+0x1d4/0x720 net/socket.c:1168
 vfs_poll+0x77/0x2a0 fs/select.c:40
 do_pollfd fs/select.c:848 [inline]
 do_poll fs/select.c:896 [inline]
 do_sys_poll+0x706/0x1120 fs/select.c:990
 __do_sys_ppoll fs/select.c:1098 [inline]
 __se_sys_ppoll fs/select.c:1070 [inline]
 __x64_sys_ppoll+0x2fe/0x610 fs/select.c:1070
 do_syscall_64+0x1b9/0x820 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x455b29
Code: 1d ba fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb b9 fb ff c3 66 2e 0f 1f 84 00 00 00 00 
RSP: 002b:00007ff036d07c68 EFLAGS: 00000246 ORIG_RAX: 000000000000010f
RAX: ffffffffffffffda RBX: 00007ff036d086d4 RCX: 0000000000455b29
RDX: 00000000200000c0 RSI: 0000000000000004 RDI: 0000000020000000
RBP: 000000000072bea0 R08: 0000000000000008 R09: 0000000000000000
R10: 0000000020000100 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000004c05f3 R14: 00000000004cfb20 R15: 0000000000000000
Modules linked in:
Dumping ftrace buffer:
   (ftrace buffer empty)
CR2: 0000000000000000
---[ end trace e1e03c2b3815045f ]---
RIP: 0010:          (null)
Code: Bad RIP value.
RSP: 0018:ffff8801c577f4c0 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff880180026000 RCX: 1ffffffff10eac85
RDX: ffff8801c577f9e0 RSI: ffff8801b600f900 RDI: ffff8801b65152c0
RBP: ffff8801c577f630 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801c577f9e0
R13: ffff880180026012 R14: 1ffff10038aefe9d R15: ffff880180026458
FS:  00007ff036d08700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffd6 CR3: 00000001d8c49000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400