======================================
| 0
| xx__-> [  986.454211][ T2237] ip_local_port_range: prefer different parity for start/end values.
| [  987.000965][ T2261] BUG: using __this_cpu_write() in preemptible [00000000] code: socat/2261
| [  987.001845][ T2261] caller is tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1881)
[  987.001984][ T2261] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[  987.001986][ T2261] Call Trace:
[  987.001988][ T2261]  <TASK>
[  987.001989][ T2261]  dump_stack_lvl (lib/dump_stack.c:94 lib/dump_stack.c:120)
[  987.001996][ T2261]  check_preemption_disabled (lib/smp_processor_id.c:47)
[  987.002000][ T2261]  tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1881)
[  987.002003][ T2261]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  987.002006][ T2261]  __release_sock (./include/net/sock.h:1190 net/core/sock.c:3216)
[  987.002012][ T2261]  release_sock (net/core/sock.c:3815)
[  987.002015][ T2261]  inet_stream_connect (net/ipv4/af_inet.c:756)
[  987.002019][ T2261]  __sys_connect (net/socket.c:2148 (discriminator 3) net/socket.c:2167 (discriminator 3))
[  987.002021][ T2261]  ? do_fcntl (fs/fcntl.c:477)
[  987.002026][ T2261]  ? __sys_connect_file (net/socket.c:2148 (discriminator 3))
[  987.002032][ T2261]  ? do_user_addr_fault (./include/linux/instrumented.h:112 ./include/linux/atomic/atomic-instrumented.h:400 ./include/linux/refcount.h:389 ./include/linux/refcount.h:432 ./include/linux/mmap_lock.h:196 ./include/linux/mmap_lock.h:217 ./include/linux/mmap_lock.h:264 arch/x86/mm/fault.c:1336)
[  987.002035][ T2261]  ? fdget_raw (./include/linux/instrumented.h:82 ./include/linux/atomic/atomic-instrumented.h:49 fs/file.c:1196 fs/file.c:1216)
[  987.002039][ T2261]  __x64_sys_connect (net/socket.c:2173 net/socket.c:2170 net/socket.c:2170)
[  987.002041][ T2261]  ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4472)
[  987.002042][ T2261]  ? do_syscall_64 (./include/linux/entry-common.h:177 arch/x86/entry/syscall_64.c:89)
[  987.002045][ T2261]  do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94)
[  987.002047][ T2261]  ? trace_hardirqs_off (kernel/trace/trace_preemptirq.c:104 (discriminator 1))
[  987.002050][ T2261]  ? exc_page_fault (arch/x86/mm/fault.c:1480 (discriminator 3) arch/x86/mm/fault.c:1527 (discriminator 3))
[  987.002052][ T2261]  entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:121)
[  987.002055][ T2261] RIP: 0033:0x7f663c55c08e
[  987.002059][ T2261] Code: 4d 89 d8 e8 94 bd 00 00 4c 8b 5d f8 41 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 11 c9 c3 0f 1f 80 00 00 00 00 48 8b 45 10 0f 05 <c9> c3 83 e2 39 83 fa 08 75 e7 e8 03 ff ff ff 0f 1f 00 f3 0f 1e fa
All code
========
   0:	4d 89 d8             	mov    %r11,%r8
   3:	e8 94 bd 00 00       	call   0xbd9c
   8:	4c 8b 5d f8          	mov    -0x8(%rbp),%r11
   c:	41 8b 93 08 03 00 00 	mov    0x308(%r11),%edx
  13:	59                   	pop    %rcx
  14:	5e                   	pop    %rsi
  15:	48 83 f8 fc          	cmp    $0xfffffffffffffffc,%rax
  19:	74 11                	je     0x2c
  1b:	c9                   	leave
  1c:	c3                   	ret
  1d:	0f 1f 80 00 00 00 00 	nopl   0x0(%rax)
  24:	48 8b 45 10          	mov    0x10(%rbp),%rax
  28:	0f 05                	syscall
  2a:*	c9                   	leave		<-- trapping instruction
  2b:	c3                   	ret
  2c:	83 e2 39             	and    $0x39,%edx
  2f:	83 fa 08             	cmp    $0x8,%edx
  32:	75 e7                	jne    0x1b
  34:	e8 03 ff ff ff       	call   0xffffffffffffff3c
  39:	0f 1f 00             	nopl   (%rax)
  3c:	f3 0f 1e fa          	endbr64

Code starting with the faulting instruction
===========================================
   0:	c9                   	leave
   1:	c3                   	ret
   2:	83 e2 39             	and    $0x39,%edx
   5:	83 fa 08             	cmp    $0x8,%edx
   8:	75 e7                	jne    0xfffffffffffffff1
   a:	e8 03 ff ff ff       	call   0xffffffffffffff12
   f:	0f 1f 00             	nopl   (%rax)
  12:	f3 0f 1e fa          	endbr64
[  987.002060][ T2261] RSP: 002b:00007ffd6aaa3900 EFLAGS: 00000202 ORIG_RAX: 000000000000002a
[  987.002064][ T2261] RAX: ffffffffffffffda RBX: 0000559b6e71e600 RCX: 00007f663c55c08e
[  987.002065][ T2261] RDX: 0000000000000010 RSI: 0000559b6e71e600 RDI: 0000000000000007
[  987.002067][ T2261] RBP: 00007ffd6aaa3910 R08: 0000000000000000 R09: 0000000000000000
[  987.002067][ T2261] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000010


Finger prints:
check_preemption_disabled:tcp_v4_do_rcv:__release_sock:release_sock:inet_stream_connect