======================================
| [ 2313.809736][T20348] ==================================================================
| [2313.810139][T20348] BUG: KASAN: slab-use-after-free in tcp_prune_ofo_queue (net/ipv4/tcp_input.c:4896 net/ipv4/tcp_input.c:5520) 
| [ 2313.810446][T20348] Read of size 4 at addr ffff8880134729d8 by task socat/20348
| [ 2313.810747][T20348]
[ 2313.810882][T20348] Hardware name: Bochs Bochs, BIOS Bochs 01/01/2011
[ 2313.810889][T20348] Call Trace:
[ 2313.810893][T20348]  <TASK>
[2313.810896][T20348] dump_stack_lvl (lib/dump_stack.c:123) 
[2313.810909][T20348] print_address_description.constprop.0 (mm/kasan/report.c:409) 
[2313.810929][T20348] ? tcp_prune_ofo_queue (net/ipv4/tcp_input.c:4896 net/ipv4/tcp_input.c:5520) 
[2313.810932][T20348] print_report (mm/kasan/report.c:522) 
[2313.810935][T20348] ? tcp_prune_ofo_queue (net/ipv4/tcp_input.c:4896 net/ipv4/tcp_input.c:5520) 
[2313.810938][T20348] ? kasan_addr_to_slab (./include/linux/mm.h:1178 mm/kasan/../slab.h:211 mm/kasan/common.c:38) 
[2313.810945][T20348] ? tcp_prune_ofo_queue (net/ipv4/tcp_input.c:4896 net/ipv4/tcp_input.c:5520) 
[2313.810948][T20348] kasan_report (mm/kasan/report.c:636) 
[2313.810951][T20348] ? tcp_prune_ofo_queue (net/ipv4/tcp_input.c:4896 net/ipv4/tcp_input.c:5520) 
[2313.810957][T20348] tcp_prune_ofo_queue (net/ipv4/tcp_input.c:4896 net/ipv4/tcp_input.c:5520) 
[2313.810962][T20348] tcp_try_rmem_schedule (./include/linux/instrumented.h:68 ./include/linux/atomic/atomic-instrumented.h:32 net/ipv4/tcp_input.c:4896 net/ipv4/tcp_input.c:5577 net/ipv4/tcp_input.c:4907) 
[2313.810969][T20348] tcp_data_queue (net/ipv4/tcp_input.c:5192) 
[2313.810975][T20348] ? __pfx_tcp_data_queue (net/ipv4/tcp_input.c:5145) 
[2313.810979][T20348] ? kvm_clock_get_cycles (./arch/x86/include/asm/preempt.h:95 arch/x86/kernel/kvmclock.c:80 arch/x86/kernel/kvmclock.c:86) 
[2313.810993][T20348] ? ktime_get (kernel/time/timekeeping.c:251 (discriminator 4) kernel/time/timekeeping.c:360 (discriminator 4) kernel/time/timekeeping.c:778 (discriminator 4)) 
[2313.811005][T20348] tcp_rcv_established (./include/linux/skbuff.h:2148 ./include/net/tcp.h:2089 ./include/net/tcp.h:2170 net/ipv4/tcp_input.c:5662 net/ipv4/tcp_input.c:6210) 
[2313.811011][T20348] ? find_held_lock (kernel/locking/lockdep.c:5353) 
[2313.811024][T20348] ? __pfx_tcp_rcv_established (net/ipv4/tcp_input.c:6027) 
[2313.811028][T20348] ? ipv4_dst_check (./include/linux/rcupdate.h:341 ./include/linux/rcupdate.h:871 net/ipv4/route.c:401 net/ipv4/route.c:1216) 
[2313.811037][T20348] tcp_v4_do_rcv (net/ipv4/tcp_ipv4.c:1972) 
[2313.811042][T20348] ? lockdep_hardirqs_on (kernel/locking/lockdep.c:4475) 
[2313.811049][T20348] __release_sock (./include/net/sock.h:1148 net/core/sock.c:3188) 
[2313.811063][T20348] release_sock (net/core/sock.c:3744) 
[2313.811066][T20348] tcp_sendmsg (net/ipv4/tcp.c:1397) 
[2313.811074][T20348] sock_write_iter (net/socket.c:714 net/socket.c:729 net/socket.c:1179) 
[2313.811083][T20348] ? __pfx___unix_dgram_recvmsg (net/unix/af_unix.c:2554) 
[2313.811089][T20348] ? backing_file_read_iter (fs/backing-file.c:203) 
[2313.811106][T20348] ? __pfx_sock_write_iter (net/socket.c:1163) 
[2313.811114][T20348] ? rcu_is_watching (./include/linux/context_tracking.h:128 kernel/rcu/tree.c:745) 
[2313.811125][T20348] vfs_write (fs/read_write.c:593 fs/read_write.c:686) 
[2313.811133][T20348] ? __pfx___sys_recvfrom (net/socket.c:2255) 
[2313.811137][T20348] ? ksys_read (./include/linux/file.h:62 ./include/linux/file.h:80 ./include/linux/file.h:85 fs/read_write.c:706) 
[2313.811140][T20348] ? __lock_release (kernel/locking/lockdep.c:5539) 
[2313.811146][T20348] ? __pfx_vfs_write (fs/read_write.c:667) 
[2313.811156][T20348] ksys_write (fs/read_write.c:738) 
[2313.811159][T20348] ? __pfx_ksys_write (fs/read_write.c:728) 
[2313.811165][T20348] do_syscall_64 (arch/x86/entry/syscall_64.c:63 arch/x86/entry/syscall_64.c:94) 
[2313.811173][T20348] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) 
[ 2313.811184][T20348] RIP: 0033:0x7fcf73ef2337
[ 2313.811190][T20348] Code: 0f 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 48 89 54 24 18 48 89 74 24
All code
========
   0:	0f 00                	(bad)
   2:	f7 d8                	neg    %eax
   4:	64 89 02             	mov    %eax,%fs:(%rdx)
   7:	48 c7 c0 ff ff ff ff 	mov    $0xffffffffffffffff,%rax
   e:	eb b7                	jmp    0xffffffffffffffc7
  10:	0f 1f 00             	nopl   (%rax)
  13:	f3 0f 1e fa          	endbr64
  17:	64 8b 04 25 18 00 00 	mov    %fs:0x18,%eax
  1e:	00 
  1f:	85 c0                	test   %eax,%eax
  21:	75 10                	jne    0x33
  23:	b8 01 00 00 00       	mov    $0x1,%eax
  28:	0f 05                	syscall
  2a:*	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax		<-- trapping instruction
  30:	77 51                	ja     0x83
  32:	c3                   	ret
  33:	48 83 ec 28          	sub    $0x28,%rsp
  37:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  3c:	48                   	rex.W
  3d:	89                   	.byte 0x89
  3e:	74 24                	je     0x64

Code starting with the faulting instruction
===========================================
   0:	48 3d 00 f0 ff ff    	cmp    $0xfffffffffffff000,%rax
   6:	77 51                	ja     0x59
   8:	c3                   	ret
   9:	48 83 ec 28          	sub    $0x28,%rsp
   d:	48 89 54 24 18       	mov    %rdx,0x18(%rsp)
  12:	48                   	rex.W
  13:	89                   	.byte 0x89
  14:	74 24                	je     0x3a
[ 2313.811194][T20348] RSP: 002b:00007ffd4f924708 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
[ 2313.811201][T20348] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fcf73ef2337
[ 2313.811204][T20348] RDX: 0000000000002000 RSI: 0000555f11d1a000 RDI: 0000000000000008
[ 2313.811206][T20348] RBP: 0000555f11d1a000 R08: 0000000000002000 R09: 0000000000000000
[ 2313.811208][T20348] R10: 0000000000000040 R11: 0000000000000246 R12: 0000000000000008


Finger prints:
print_report:kasan_report:tcp_prune_ofo_queue:tcp_try_rmem_schedule:tcp_data_queue