RIP = 0xffffffff812047de  RSP = 0xffff88818697f400
CS=0010 SS=0018 DS=0000 ES=0000 FS=0000 GS=0000 TR=0040
FSBase=0000000000000000 GSBase=ffff8881daf00000 TRBase=fffffe0000033000
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: 22 Comm: kworker/1:1 Not tainted 4.20.0-rc4+ #262
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events smc_tcp_listen_work
RIP: 0010:kernel_accept+0x34/0x310 net/socket.c:3242
Code: d6 41 55 49 89 fd 41 54 49 89 f4 53 48 83 ec 08 e8 01 64 5b fb 49 8d 7d 20 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 4a 02 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b
RSP: 0018:ffff8881d945f5b0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff8881c17a1240 RCX: 1ffff1103b28a1d1
RDX: 0000000000000004 RSI: ffffffff862437bf RDI: 0000000000000020
RBP: ffff8881d945f5e0 R08: ffff8881d9450e88 R09: 0000000000000006
R10: 0000000000000000 R11: ffff8881d94505c0 R12: ffff8881d945f690
R13: 0000000000000000 R14: 0000000000000000 R15: ffff888188dd1038
FS:  0000000000000000(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000009b991b4 CR3: 00000001ce5ca000 CR4: 00000000001426e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 smc_clcsock_accept net/smc/af_smc.c:837 [inline]
 smc_tcp_listen_work+0x218/0x11c0 net/smc/af_smc.c:1305
 process_one_work+0xc90/0x1c40 kernel/workqueue.c:2153
 worker_thread+0x17f/0x1390 kernel/workqueue.c:2296
 kthread+0x35a/0x440 kernel/kthread.c:246
 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:352
Modules linked in:
kobject: 'loop1' (0000000055b806ce): kobject_uevent_env
GDTBase=fffffe0000001000 IDTBase=fffffe0000000000
CR0=0000000080050033 CR3=00000001bd8f9000 CR4=00000000001426e0
kobject: 'loop1' (0000000055b806ce): fill_kobj_path: path = '/devices/virtual/block/loop1'
Sysenter RSP=fffffe0000002200 CS:RIP=0010:ffffffff87e01360
EFER = 0x0000000000000d01  PAT = 0x0407050600070106
*** Control State ***
PinBased=0000003f CPUBased=b5a06dfa SecondaryExec=000000c3
EntryControls=0000d1ff ExitControls=002fefff
ExceptionBitmap=00060042 PFECmask=00000000 PFECmatch=00000000
VMEntry: intr_info=800000b5 errcode=00000000 ilen=00000000
kobject: 'loop4' (00000000f1dc4a80): kobject_uevent_env
VMExit: intr_info=00000000 errcode=00000000 ilen=00000000
kobject: 'loop4' (00000000f1dc4a80): fill_kobj_path: path = '/devices/virtual/block/loop4'
        reason=80000021 qualification=0000000000000000
---[ end trace 06a2662841817103 ]---
IDTVectoring: info=00000000 errcode=00000000
RIP: 0010:kernel_accept+0x34/0x310 net/socket.c:3242
TSC Offset = 0xffffff056a5a51f1
Code: d6 41 55 49 89 fd 41 54 49 89 f4 53 48 83 ec 08 e8 01 64 5b fb 49 8d 7d 20 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 4a 02 00 00 48 b8 00 00 00 00 00 fc ff df 49 8b
RSP: 0018:ffff8881d945f5b0 EFLAGS: 00010202
TPR Threshold = 0x00
RAX: dffffc0000000000 RBX: ffff8881c17a1240 RCX: 1ffff1103b28a1d1
EPT pointer = 0x00000001b5b0f01e
RDX: 0000000000000004 RSI: ffffffff862437bf RDI: 0000000000000020
kobject: 'kvm' (000000000d6134d5): kobject_uevent_env
RBP: ffff8881d945f5e0 R08: ffff8881d9450e88 R09: 0000000000000006
kobject: 'kvm' (000000000d6134d5): fill_kobj_path: path = '/devices/virtual/misc/kvm'
R10: 0000000000000000 R11: ffff8881d94505c0 R12: ffff8881d945f690
R13: 0000000000000000 R14: 0000000000000000 R15: ffff888188dd1038
FS:  0000000000000000(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007febbe2fc000 CR3: 00000001c3993000 CR4: 00000000001406e0
kobject: 'loop0' (00000000ace744a6): kobject_uevent_env
kobject: 'kvm' (000000000d6134d5): kobject_uevent_env
kobject: 'loop0' (00000000ace744a6): fill_kobj_path: path = '/devices/virtual/block/loop0'
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
kobject: 'kvm' (000000000d6134d5): fill_kobj_path: path = '/devices/virtual/misc/kvm'
kobject: 'kvm' (000000000d6134d5): kobject_uevent_env
kobject: 'loop2' (00000000731634d6): kobject_uevent_env
kobject: 'loop2' (00000000731634d6): fill_kobj_path: path = '/devices/virtual/block/loop2'
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400