IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
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
kasan: CONFIG_KASAN_INLINE enabled
Dumping ftrace buffer:
kasan: GPF could be caused by NULL-ptr deref or user memory access
   (ftrace buffer empty)
Modules linked in:
CPU: 1 PID: 5966 Comm: syzkaller848700 Not tainted 4.16.0-rc4+ #275
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:rds_ib_get_mr+0x5c/0x230 net/rds/ib_rdma.c:544
RSP: 0018:ffff8801d2fc7890 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff8801af970700 RCX: ffffffff85634cae
RDX: 000000000000000d RSI: 0000000000000001 RDI: 0000000000000068
RBP: ffff8801d2fc78b8 R08: ffffed003ae05a2c R09: ffff8801d702d140
R10: 0000000000000004 R11: ffffed003ae05a2b R12: ffff8801d702d140
R13: 0000000000000001 R14: ffff8801b35cde1c R15: 0000000000000000
FS:  00007f2640cfc700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2640d3ddb8 CR3: 00000001b10ed003 CR4: 00000000001606e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __rds_rdma_map+0x710/0x1050 net/rds/rdma.c:271
 rds_get_mr_for_dest+0x1d4/0x2c0 net/rds/rdma.c:357
 rds_setsockopt+0x6cc/0x980 net/rds/af_rds.c:350
 SYSC_setsockopt net/socket.c:1850 [inline]
 SyS_setsockopt+0x189/0x360 net/socket.c:1829
 do_syscall_64+0x281/0x940 arch/x86/entry/common.c:287
 entry_SYSCALL_64_after_hwframe+0x42/0xb7
RIP: 0033:0x448ce9
RSP: 002b:00007f2640cfbce8 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00000000006e5a34 RCX: 0000000000448ce9
RDX: 0000000000000007 RSI: 0000000000000114 RDI: 0000000000000003
RBP: 00000000006e5a30 R08: 00000000000000a0 R09: 0000000000000000
R10: 0000000020000380 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdade6ea7f R14: 00007f2640cfc9c0 R15: 0000000000000001
Code: fa 48 c1 ea 03 80 3c 02 00 0f 85 cc 01 00 00 4c 8b bb 88 04 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d 7f 68 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 9c 01 00 00 4d 8b 7f 68 48 b8 00 00 00 00 00 
RIP: rds_ib_get_mr+0x5c/0x230 net/rds/ib_rdma.c:544 RSP: ffff8801d2fc7890
general protection fault: 0000 [#2] SMP KASAN
---[ end trace 63f147b62c0f843b ]---
Dumping ftrace buffer:
   (ftrace buffer empty)
Modules linked in: