kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 23700 Comm: syz-executor.5 Not tainted 5.1.0-rc3-next-20190408 #20
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:d_alloc_pseudo+0x33/0x70 fs/dcache.c:1752
Code: 41 54 49 89 fc 48 83 ec 08 e8 39 d9 b7 ff 4c 89 ee 4c 89 e7 e8 1e f1 ff ff 48 ba 00 00 00 00 00 fc ff df 48 89 c1 48 c1 e9 03 <0f> b6 14 11 84 d2 74 05 80 fa 03 7e 10 81 08 00 00 00 40 48 83 c4
RSP: 0018:ffff888058cd7c60 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 1ffff1100b19af94 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: ffffffff81b8a01f RDI: 0000000000000282
RBP: ffff888058cd7c78 R08: ffff888096710480 R09: ffffed1015d25bc8
R10: ffffed1015d25bc7 R11: ffff8880ae92de3b R12: ffff88821b742cc0
R13: ffff888058cd7cc0 R14: ffff88821b6a0628 R15: ffff88809de35ab0
FS:  00007fc1a3216700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000007101b4 CR3: 00000000994c5000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 alloc_file_pseudo+0xe2/0x280 fs/file_table.c:224
 sock_alloc_file+0x4d/0x170 net/socket.c:406
 __sys_accept4+0x259/0x6a0 net/socket.c:1723
 __do_sys_accept4 net/socket.c:1769 [inline]
 __se_sys_accept4 net/socket.c:1766 [inline]
 __x64_sys_accept4+0x97/0xf0 net/socket.c:1766
 do_syscall_64+0x103/0x610 arch/x86/entry/common.c:290
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4582b9
Code: ad b8 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 7b b8 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fc1a3215c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000120
RAX: ffffffffffffffda RBX: 00007fc1a3215c90 RCX: 00000000004582b9
RDX: 0000000000000000 RSI: 0000000020000640 RDI: 0000000000000005
RBP: 000000000073bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fc1a32166d4
R13: 00000000004be049 R14: 00000000004ce7f0 R15: 0000000000000006
Modules linked in:
---[ end trace d6eba754ea058575 ]---
RIP: 0010:d_alloc_pseudo+0x33/0x70 fs/dcache.c:1752
Code: 41 54 49 89 fc 48 83 ec 08 e8 39 d9 b7 ff 4c 89 ee 4c 89 e7 e8 1e f1 ff ff 48 ba 00 00 00 00 00 fc ff df 48 89 c1 48 c1 e9 03 <0f> b6 14 11 84 d2 74 05 80 fa 03 7e 10 81 08 00 00 00 40 48 83 c4
RSP: 0018:ffff888058cd7c60 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 1ffff1100b19af94 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: ffffffff81b8a01f RDI: 0000000000000282
RBP: ffff888058cd7c78 R08: ffff888096710480 R09: ffffed1015d25bc8
R10: ffffed1015d25bc7 R11: ffff8880ae92de3b R12: ffff88821b742cc0
R13: ffff888058cd7cc0 R14: ffff88821b6a0628 R15: ffff88809de35ab0
FS:  00007fc1a3216700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffcd5edbd3c CR3: 00000000994c5000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600