device bridge0 entered promiscuous mode
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
device bridge0 left promiscuous mode
CPU: 1 PID: 6197 Comm: kworker/1:3 Not tainted 4.20.0-rc3+ #312
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: events smc_tcp_listen_work
RIP: 0010:inet_accept+0x106/0x9e0 net/ipv4/af_inet.c:734
Code: 09 80 fa 03 0f 8e 54 07 00 00 41 c7 86 40 ff ff ff ea ff ff ff 48 8d 78 28 48 ba 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 <80> 3c 11 00 0f 85 56 07 00 00 48 b9 00 00 00 00 00 fc ff df 48 8b
RSP: 0018:ffff888196927478 EFLAGS: 00010206
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000005
RDX: dffffc0000000000 RSI: ffffffff86b4e653 RDI: 0000000000000028
RBP: ffff8881969275a0 R08: ffff8881d26c0380 R09: ffffed1032d24e6a
R10: ffffed1032d24e6a R11: 0000000000000003 R12: ffff8881d5050580
R13: ffff8881969274b8 R14: ffff888196927578 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ff516f4e000 CR3: 00000001945b1000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 kernel_accept+0x136/0x310 net/socket.c:3250
 smc_clcsock_accept net/smc/af_smc.c:837 [inline]
 smc_tcp_listen_work+0x218/0x11c0 net/smc/af_smc.c:1304
 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: 'loop5' (0000000000df39a7): kobject_uevent_env
kobject: 'loop5' (0000000000df39a7): fill_kobj_path: path = '/devices/virtual/block/loop5'
kobject: 'loop3' (000000005b979088): kobject_uevent_env
kobject: 'loop3' (000000005b979088): fill_kobj_path: path = '/devices/virtual/block/loop3'
kobject: 'loop4' (000000001a513257): kobject_uevent_env
kobject: 'loop4' (000000001a513257): fill_kobj_path: path = '/devices/virtual/block/loop4'
device bridge0 entered promiscuous mode
kobject: 'loop2' (00000000a25effed): kobject_uevent_env
kobject: 'loop2' (00000000a25effed): fill_kobj_path: path = '/devices/virtual/block/loop2'
device bridge0 left promiscuous mode
kobject: 'loop1' (00000000b746dfd7): kobject_uevent_env
kobject: 'loop1' (00000000b746dfd7): fill_kobj_path: path = '/devices/virtual/block/loop1'
kobject: 'loop4' (000000001a513257): kobject_uevent_env
kobject: 'loop4' (000000001a513257): fill_kobj_path: path = '/devices/virtual/block/loop4'
TCP: request_sock_TCPv6: Possible SYN flooding on port 20002. Sending cookies.  Check SNMP counters.
---[ end trace 269af8dfa3b54d39 ]---
RIP: 0010:inet_accept+0x106/0x9e0 net/ipv4/af_inet.c:734
Code: 09 80 fa 03 0f 8e 54 07 00 00 41 c7 86 40 ff ff ff ea ff ff ff 48 8d 78 28 48 ba 00 00 00 00 00 fc ff df 48 89 f9 48 c1 e9 03 <80> 3c 11 00 0f 85 56 07 00 00 48 b9 00 00 00 00 00 fc ff df 48 8b
kobject: 'loop4' (000000001a513257): kobject_uevent_env
kobject: 'loop4' (000000001a513257): fill_kobj_path: path = '/devices/virtual/block/loop4'
RSP: 0018:ffff888196927478 EFLAGS: 00010206
RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000005
RDX: dffffc0000000000 RSI: ffffffff86b4e653 RDI: 0000000000000028
RBP: ffff8881969275a0 R08: ffff8881d26c0380 R09: ffffed1032d24e6a
R10: ffffed1032d24e6a R11: 0000000000000003 R12: ffff8881d5050580
R13: ffff8881969274b8 R14: ffff888196927578 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8881daf00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000004ccef0 CR3: 00000001d21e8000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400