BUG: unable to handle kernel NULL pointer dereference at 0000000000000010
PGD 8000000118a65067 P4D 8000000118a65067 PUD 11bc2f067 PMD 0 
Oops: 0000 [#1] SMP PTI
CPU: 0 PID: 13 Comm: kworker/0:1 Not tainted 4.19.0-rc1+ #39
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events smc_tcp_listen_work
RIP: 0010:kernel_accept+0x8e/0x720 net/socket.c:3236
Code: 85 db 0f 85 8e 03 00 00 49 8b 1f 4c 89 ff e8 49 41 fd fa 4c 8b 20 44 8b 2a 4c 8d 7b 10 4d 85 e4 0f 85 7d 03 00 00 44 89 6d 98 <0f> b7 43 10 89 45 b4 4c 89 ff e8 a3 40 fd fa 48 81 c3 f8 01 00 00
RSP: 0018:ffff8801d56bfb00 EFLAGS: 00010246
RAX: ffff88013499a120 RBX: 0000000000000000 RCX: ffff88013499e120
RDX: ffff88013499e120 RSI: aaaaaaaaaaaab000 RDI: ffffea000af01f40
RBP: ffff8801d56bfb80 R08: 0000000000480020 R09: 0000000000000002
R10: 0000000000000000 R11: ffffffff88b4a450 R12: 0000000000000000
R13: 0000000000000000 R14: ffff8801d5698900 R15: 0000000000000010
FS:  0000000000000000(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000010 CR3: 000000011bc96000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 smc_clcsock_accept net/smc/af_smc.c:831 [inline]
 smc_tcp_listen_work+0x2c4/0x1510 net/smc/af_smc.c:1296
 process_one_work+0x1605/0x1f40 kernel/workqueue.c:2153
 worker_thread+0x11a2/0x2590 kernel/workqueue.c:2296
 kthread+0x465/0x4a0 kernel/kthread.c:247
 ret_from_fork+0x35/0x40 arch/x86/entry/entry_64.S:416
Modules linked in:
Dumping ftrace buffer:
   (ftrace buffer empty)
CR2: 0000000000000010
---[ end trace 97a664251630e3cf ]---
RIP: 0010:kernel_accept+0x8e/0x720 net/socket.c:3236
Code: 85 db 0f 85 8e 03 00 00 49 8b 1f 4c 89 ff e8 49 41 fd fa 4c 8b 20 44 8b 2a 4c 8d 7b 10 4d 85 e4 0f 85 7d 03 00 00 44 89 6d 98 <0f> b7 43 10 89 45 b4 4c 89 ff e8 a3 40 fd fa 48 81 c3 f8 01 00 00
RSP: 0018:ffff8801d56bfb00 EFLAGS: 00010246
RAX: ffff88013499a120 RBX: 0000000000000000 RCX: ffff88013499e120
RDX: ffff88013499e120 RSI: aaaaaaaaaaaab000 RDI: ffffea000af01f40
RBP: ffff8801d56bfb80 R08: 0000000000480020 R09: 0000000000000002
R10: 0000000000000000 R11: ffffffff88b4a450 R12: 0000000000000000
R13: 0000000000000000 R14: ffff8801d5698900 R15: 0000000000000010
FS:  0000000000000000(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000010 CR3: 000000011bc96000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600