kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 12643 Comm: syz-executor.1 Not tainted 5.3.0-rc6-next-20190830 #75
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:xsk_poll+0x95/0x540 net/xdp/xsk.c:386
Code: 80 3c 02 00 0f 85 70 04 00 00 4c 8b a3 88 04 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d bc 24 96 00 00 00 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 bf 03 00 00
RSP: 0018:ffff88805c17f690 EFLAGS: 00010207
RAX: dffffc0000000000 RBX: ffff88809fd7d000 RCX: ffffc90008357000
RDX: 0000000000000012 RSI: ffffffff859b6684 RDI: 0000000000000096
RBP: ffff88805c17f6c0 R08: ffff888038b30380 R09: ffffed1013fafa49
R10: ffffed1013fafa48 R11: ffff88809fd7d247 R12: 0000000000000000
R13: 0000000000000304 R14: ffff88809a0df2c0 R15: ffff8880a2a92a20
FS:  00007f6d9d993700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f6d9d971db8 CR3: 000000003fd48000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600
Call Trace:
 sock_poll+0x15e/0x480 net/socket.c:1256
 vfs_poll include/linux/poll.h:90 [inline]
 do_select+0x927/0x16f0 fs/select.c:534
 core_sys_select+0x564/0x890 fs/select.c:677
 do_pselect fs/select.c:759 [inline]
 __do_sys_pselect6 fs/select.c:784 [inline]
 __se_sys_pselect6 fs/select.c:769 [inline]
 __x64_sys_pselect6+0x3df/0x490 fs/select.c:769
 do_syscall_64+0xfa/0x760 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4598e9
Code: fd b7 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 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f6d9d992c78 EFLAGS: 00000246 ORIG_RAX: 000000000000010e
RAX: ffffffffffffffda RBX: 0000000000000006 RCX: 00000000004598e9
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000000000040
RBP: 000000000075bfc8 R08: 0000000020000200 R09: 0000000000000000
R10: 0000000020000140 R11: 0000000000000246 R12: 00007f6d9d9936d4
R13: 00000000004c6c05 R14: 00000000004dbe68 R15: 00000000ffffffff
Modules linked in:
---[ end trace 029654468b2a4778 ]---
RIP: 0010:xsk_poll+0x95/0x540 net/xdp/xsk.c:386
Code: 80 3c 02 00 0f 85 70 04 00 00 4c 8b a3 88 04 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d bc 24 96 00 00 00 48 89 fa 48 c1 ea 03 <0f> b6 04 02 48 89 fa 83 e2 07 38 d0 7f 08 84 c0 0f 85 bf 03 00 00
RSP: 0018:ffff88805c17f690 EFLAGS: 00010207
RAX: dffffc0000000000 RBX: ffff88809fd7d000 RCX: ffffc90008357000
RDX: 0000000000000012 RSI: ffffffff859b6684 RDI: 0000000000000096
RBP: ffff88805c17f6c0 R08: ffff888038b30380 R09: ffffed1013fafa49
R10: ffffed1013fafa48 R11: ffff88809fd7d247 R12: 0000000000000000
R13: 0000000000000304 R14: ffff88809a0df2c0 R15: ffff8880a2a92a20
FS:  00007f6d9d993700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000625208 CR3: 000000003fd48000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600