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)
FAT-fs (loop0): Directory bread(block 112) failed
Modules linked in:
CPU: 0 PID: 15618 Comm: syz-executor2 Not tainted 4.17.0-rc3+ #30
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:smc_getname+0x124/0x1c0 net/smc/af_smc.c:1089
RSP: 0018:ffff8801d8edfc20 EFLAGS: 00010206
FAT-fs (loop0): Directory bread(block 113) failed
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc900026b4000
RDX: 0000000000000005 RSI: ffffffff873e70a6 RDI: 0000000000000028
RBP: ffff8801d8edfc48 R08: ffff88018d720000 R09: ffffed003b5c46c2
R10: 0000000000000003 R11: 0000000000000000 R12: 0000000000000000
R13: ffff8801d8edfd10 R14: ffff8801c99bea00 R15: dffffc0000000000
FS:  00007f3a736f5700(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
FAT-fs (loop0): Directory bread(block 114) failed
CR2: 00007f940d274db8 CR3: 0000000193e1b000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __sys_getsockname+0x184/0x380 net/socket.c:1699
FAT-fs (loop0): Directory bread(block 112) failed
FAT-fs (loop0): Directory bread(block 113) failed
 __do_sys_getsockname net/socket.c:1714 [inline]
 __se_sys_getsockname net/socket.c:1711 [inline]
 __x64_sys_getsockname+0x73/0xb0 net/socket.c:1711
FAT-fs (loop0): Directory bread(block 114) failed
 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287
FAT-fs (loop0): Directory bread(block 112) failed
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x455979
RSP: 002b:00007f3a736f4c68 EFLAGS: 00000246 ORIG_RAX: 0000000000000033
RAX: ffffffffffffffda RBX: 00007f3a736f56d4 RCX: 0000000000455979
RDX: 0000000020000080 RSI: 0000000020000000 RDI: 0000000000000013
FAT-fs (loop0): Directory bread(block 113) failed
RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff
R13: 00000000000000c3 R14: 00000000006f52e8 R15: 0000000000000000
Code: fa 48 c1 ea 03 80 3c 
FAT-fs (loop0): Directory bread(block 114) failed
02 00 0f 85 99 00 00 00 48 8b 9b 50 04 00 00 48 
attempt to access beyond end of device
b8 00 00 00 00 00 fc ff df 48 8d 7b 28 
loop0: rw=2049, want=151, limit=112
48 89 fa 48 c1 ea 03 
attempt to access beyond end of device
<80> 3c 02 00 75 70 48 b8 00 00 00 00 00 fc ff df 
loop0: rw=2049, want=120, limit=112
4c 8b 73 28 49 
buffer_io_error: 6 callbacks suppressed
Buffer I/O error on dev loop0, logical block 119, lost async page write
RIP: smc_getname+0x124/0x1c0 net/smc/af_smc.c:1089 RSP: ffff8801d8edfc20
---[ end trace fd58908f33744d4b ]---