kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 26449 Comm: syz-executor.4 Not tainted 4.19.211-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:tcp_cleanup_ulp+0xb4/0x130 net/ipv4/tcp_ulp.c:131
Code: 3c 02 00 0f 85 85 00 00 00 48 8b ab c0 06 00 00 e8 a1 96 81 fa 48 8d 7d 38 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 4d 48 8b 7d 38 e8 cd 33 78 fa 4c 89 ea 48 b8 00 00
RSP: 0018:ffff88809b53f678 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff8880540ce640 RCX: 1ffff1101685554b
RDX: 0000000000000007 RSI: ffffffff86e0eecf RDI: 0000000000000038
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000002
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8174af10
R13: ffff8880540ced00 R14: ffff8880540ce668 R15: ffff8880a928cbc0
FS:  00007fc8bba57700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa9f41d6718 CR3: 00000000af0c9000 CR4: 00000000003406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 tcp_v4_destroy_sock+0xf9/0x770 net/ipv4/tcp_ipv4.c:1986
 inet_csk_destroy_sock+0x189/0x400 net/ipv4/inet_connection_sock.c:875
 tcp_done+0x24a/0x2a0 net/ipv4/tcp.c:3799
 tcp_rcv_state_process+0x23c2/0x4c50 net/ipv4/tcp_input.c:6225
 tcp_v4_do_rcv+0x31f/0x870 net/ipv4/tcp_ipv4.c:1569
 sk_backlog_rcv include/net/sock.h:952 [inline]
 __release_sock+0x134/0x3a0 net/core/sock.c:2362
 tcp_close+0x5c5/0xfd0 net/ipv4/tcp.c:2436
 bpf_tcp_close+0x177/0x390 kernel/bpf/sockmap.c:406
 inet_release+0xd7/0x1e0 net/ipv4/af_inet.c:427
 __sock_release+0xcd/0x2a0 net/socket.c:599
 sock_close+0x15/0x20 net/socket.c:1214
 __fput+0x2ce/0x890 fs/file_table.c:278
 task_work_run+0x148/0x1c0 kernel/task_work.c:113
 exit_task_work include/linux/task_work.h:22 [inline]
 do_exit+0xbf3/0x2be0 kernel/exit.c:870
 do_group_exit+0x125/0x310 kernel/exit.c:967
 get_signal+0x3f2/0x1f70 kernel/signal.c:2589
 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799
 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163
 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline]
 syscall_return_slowpath+0x3f0/0x4a0 arch/x86/entry/common.c:271
 ret_from_fork+0x15/0x30 arch/x86/entry/entry_64.S:407
RIP: 0033:0x7fc8bd125531
Code: Bad RIP value.
RSP: 002b:00007fc8bba572f0 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: 0000000000000000 RBX: 00007fc8bba57700 RCX: 00007fc8bd125531
RDX: 00007fc8bba579d0 RSI: 00007fc8bba572f0 RDI: 00000000003d0f00
RBP: 00007ffc54915ba0 R08: 00007fc8bba57700 R09: 00007fc8bba57700
R10: 00007fc8bba579d0 R11: 0000000000000206 R12: 00007ffc54915a0e
R13: 00007ffc54915a0f R14: 00007fc8bba57300 R15: 0000000000022000
Modules linked in:
---[ end trace bd06f91cc8496ff9 ]---
RIP: 0010:tcp_cleanup_ulp+0xb4/0x130 net/ipv4/tcp_ulp.c:131
Code: 3c 02 00 0f 85 85 00 00 00 48 8b ab c0 06 00 00 e8 a1 96 81 fa 48 8d 7d 38 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 75 4d 48 8b 7d 38 e8 cd 33 78 fa 4c 89 ea 48 b8 00 00
RSP: 0018:ffff88809b53f678 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff8880540ce640 RCX: 1ffff1101685554b
RDX: 0000000000000007 RSI: ffffffff86e0eecf RDI: 0000000000000038
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000002
R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff8174af10
R13: ffff8880540ced00 R14: ffff8880540ce668 R15: ffff8880a928cbc0
FS:  00007fc8bba57700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055eee8cc3160 CR3: 0000000097825000 CR4: 00000000003406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	3c 02                	cmp    $0x2,%al
   2:	00 0f                	add    %cl,(%rdi)
   4:	85 85 00 00 00 48    	test   %eax,0x48000000(%rbp)
   a:	8b ab c0 06 00 00    	mov    0x6c0(%rbx),%ebp
  10:	e8 a1 96 81 fa       	callq  0xfa8196b6
  15:	48 8d 7d 38          	lea    0x38(%rbp),%rdi
  19:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
  20:	fc ff df
  23:	48 89 fa             	mov    %rdi,%rdx
  26:	48 c1 ea 03          	shr    $0x3,%rdx
* 2a:	80 3c 02 00          	cmpb   $0x0,(%rdx,%rax,1) <-- trapping instruction
  2e:	75 4d                	jne    0x7d
  30:	48 8b 7d 38          	mov    0x38(%rbp),%rdi
  34:	e8 cd 33 78 fa       	callq  0xfa783406
  39:	4c 89 ea             	mov    %r13,%rdx
  3c:	48                   	rex.W
  3d:	b8                   	.byte 0xb8